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Patent US6046716A successfully refreshed from Google Patents.
US6046716A
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Display system having electrode modulation to alter a state of an electro-optic layer
Assignee: Emerson Radio Corp
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Filing: 1997-12-18
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Granted: 2000-04-04
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Expires: 2017-12-18
Abstract
Abstract Methods and systems for operating a display system. An example of the display system includes a first substrate having a plurality of pixel electrodes, an electro-optic layer operatively coupled to the pixel electrodes and an electrode operatively coupled to said electro-optic layer. In one example of a method of the invention, a first plurality of pixel data values is applied to the plurality of pixel electrodes. A first control voltage is applied to the electrode to alter a state of the electro-optic layer such that the first pixel data represented by the first plurality of pixel data values is substantially not displayed. A second plurality of pixel data values, representing a second pixel data, is applied to the plurality of pixel electrodes, and a second control voltage is applied to the electrode to alter the state of the electro-optic layer such that the second pixel data is displayed. In an example of a first aspect of the invention, a voltage difference between the first control voltage and the second control voltage is reduced to reduce capacitive shifting of the second plurality of pixel data values on the plurality of pixel electrodes. In an example of a second aspect of the invention, at least one of the first control voltage, the second control voltage and a pixel data value of the second plurality of pixel data values is determined by an illumination color used in displaying said second pixel data. In an example of a third aspect of the invention, the electrode receives a composite signal over time, and a first parameter of at least one of the first control voltage and the second control voltage is selected to provide an offset, for a portion of the composite signal, from a DC balanced signal over time with respect to a particular voltage.
Inventors
- 👤 Douglas McKnight
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:20
CPC Classifications
G; G09; G09G; G09G3/00; G09G3/20; G09G3/34; G09G3/36; G09G3/3611; G09G3/3648; G09G3/2007; G09G3/2011; G09G3/3655; G09G2300/00; G09G2300/08; G09G2300/0809; G09G2300/0814; G09G2300/0823; G09G2300/0842; G09G2300/0861; G09G2300/0876; G09G2310/00; G09G2310/02; G09G2310/0235; G09G2310/0243; G09G2310/0251; G09G2310/06; G09G2310/061; G09G2310/063; G09G2320/00; G09G2320/02; G09G2320/0204; G09G2320/0252; G09G2320/0261; G09G3/3614; G09G3/3659; G09G3/3674; G09G3/3677; G09G3/3685; G09G3/3688
Claims Analysis
Total Claims: 110
Claim 1
Independent Claim
192 words
A method for operating a display system, said display system comprising a first substrate having a plurality of pixel electrodes, an electro-optic layer operatively coupled to said pixel electrodes and an electrode operatively coupled to said electro-optic layer, said method comprising: applying a first plurality of pixel data values to said plurality of pixel electrodes such that a first pixel data represented by said first plurality of pixel data values is displayed; applying a first control voltage to said electrode to alter a state of said electro-optic layer such that said first pixel data is substantially not displayed; applying a second plurality of pixel data values to said plurality of pixel electrodes, said second plurality of pixel data values representing a second pixel data; after applying said second plurality of pixel data values, applying a second control voltage to said electrode to alter said state of said electro-optic layer such that said second pixel data is displayed, and wherein a voltage difference between said first control voltage and said second control voltage is reduced to reduce capacitive shifting of said second plurality of pixel data values on said plurality of pixel electrodes.
Claim 2
Independent Claim
192 words
A method for operating a display system, said display system comprising a first substrate having a plurality of pixel electrodes, an electro-optic layer operatively coupled to said pixel electrodes and an electrode operatively coupled to said electro-optic layer, said method comprising: applying a first plurality of pixel data values to said plurality of pixel electrodes such that a first pixel data represented by said first plurality of pixel data values is displayed; applying a first control voltage to said electrode to alter a state of said electro-optic layer such that said first pixel data is substantially not displayed; applying a second plurality of pixel data values to said plurality of pixel electrodes, said second plurality of pixel data values representing a second pixel data; after applying said second plurality of pixel data values, applying a second control voltage to said electrode to alter said state of said electro-optic layer such that said second pixel data is displayed, and wherein a voltage difference between said first control voltage and said second control voltage is reduced to reduce capacitive shifting of said second plurality of pixel data values on said plurality of pixel electrodes.
Claim 3
Dependent Claim
29 words
A method as in claim 1 wherein said second plurality of pixel data values is determined relative to said second control voltage in order to reduce said capacitive shifting.
Claim 4
Dependent Claim
146 words
A method as in claim 1 wherein said first control voltage is one of a high extreme and a low extreme and wherein said second control voltage is one of a high view extreme or a low view extreme and wherein when a maximum voltage across said electro-optic layer is desired for a frame or a subframe, a pixel electrode voltage, corresponding to one of said second plurality of pixel data values, is one of a high pixel extreme voltage or a low pixel extreme voltage, and wherein, when said maximum voltage across said electro-optic layer is desired during display of said second pixel data, said pixel electrode voltage is substantially at said low pixel extreme voltage when said second control voltage is substantially at said high view extreme and said first control voltage, for said frame or said subframe, was previously at said high extreme.
Claim 5
Dependent Claim
64 words
A method as claim 3 wherein, when said maximum voltage across said electro-optic layer is desired during display of said second pixel data, said pixel electrode voltage is substantially at said high pixel extreme voltage when said second control voltage is substantially at said low view extreme and said first control voltage, for said frame or said subframe, was previously at said low extreme.
Claim 6
Dependent Claim
65 words
A method as in claim 3 wherein, when a minimum voltage across said electro-optic layer is desired during display of said second pixel data, said pixel electrode voltage is substantially at said high pixel extreme voltage when said second control voltage is substantially at said high view extreme and said first control voltage, for said frame or said subframe, was previously at said high extreme.
Claim 7
Dependent Claim
65 words
A method as in claim 3 wherein, when said minimum voltage across said electro-optic layer is desired during display of said second pixel data, said pixel electrode voltage is substantially at said low pixel extreme voltage when said second control voltage is substantially at said low view extreme and said first control voltage, for said frame or said subframe, was previously at said low extreme.
Claim 8
Dependent Claim
55 words
A method as in claim 3 wherein a first image is represented by said first pixel data and a second image is represented by said second pixel data and wherein said first image comprises a first color subframe for a first color and said second image comprises a second color subframe for a second color.
Claim 9
Dependent Claim
32 words
A method as in claim 7 wherein at least one of said low extreme and said high extreme of said first control voltage is determined by the color of said second color.
Claim 10
Dependent Claim
34 words
A method as in claim 7 wherein at least one of said high view extreme and said low view extreme of said second control voltage is determined by the color of said second color.
Claim 11
Dependent Claim
33 words
A method as in claim 7 wherein at least one of said high pixel extreme voltage and said low pixel extreme voltage is determined in part by the color of said second color.
Claim 12
Dependent Claim
33 words
A method as in claim 3 wherein said step of applying said first control voltage and said step of applying said second plurality of pixel data values overlap at least partially in time.
Claim 13
Dependent Claim
14 words
A method as in claim 11 wherein said electrode is a cover glass electrode.
Claim 14
Dependent Claim
24 words
A method as in claim 12 wherein said cover glass electrode receives a DC balanced signal over time with respect to a voltage level.
Claim 15
Dependent Claim
28 words
A method as in claim 3 wherein said display system is segmented such that said electrode covers only a portion of a display surface of said display system.
Claim 16
Dependent Claim
31 words
A method as in claim 12 wherein said display system comprises a liquid crystal disposed on a semiconductor substrate and said plurality of pixel electrodes are disposed on said semiconductor substrate.
Claim 17
Dependent Claim
156 words
A method as in claim 3 wherein said electro-optic layer comprises a liquid crystal material and wherein said liquid crystal has at least a first light altering state and a second light altering state and wherein said first control voltage sets said liquid crystal in said first light altering state such that light substantially cannot pass through said display system and wherein said second control voltage allows said liquid crystal to be set in said second light altering state such that light is capable of passing through said display system and wherein said step of applying a first control voltage further comprises applying a third control voltage after said first control voltage and before said step of applying said second control voltage, wherein said third control voltage substantially holds said liquid crystal in nearly said first light altering state and said first control voltage rapidly places said liquid crystal in substantially said first light altering state.
Claim 18
Dependent Claim
33 words
A method as in claim 16 wherein said step of applying said third control voltage and said step of applying said second plurality of pixel data values overlap at least partially in time.
Claim 19
Dependent Claim
30 words
A method as in claim 17 wherein said step of applying said third control voltage and said step of applying said second plurality of pixel data values occur substantially contemporaneously.
Claim 20
Dependent Claim
35 words
A method as in claim 3 wherein after applying said second control voltage, said electro-optic layer relaxes to a plurality of gray scale or color levels corresponding to said second plurality of pixel data values.
Claim 21
Dependent Claim
43 words
A method as in claim 19 wherein for at least a set of pixels of said first pixel data, said electro-optic layer has not reached a steady state display level specified by said first pixel data when said first control voltage is applied.
Claim 22
Dependent Claim
37 words
A method as in claim 3 further comprising illuminating said display system with at least one pulse of illumination which does not provide continuous illumination during the time that said second pixel data is available for display.
Claim 23
Dependent Claim
22 words
A method as in claim 21 wherein said second pixel data is available for display while said second control voltage is applied.
Claim 24
Dependent Claim
46 words
A method as in claim 17 further comprising applying a first reference voltage to at least one of said pixel electrodes and wherein said step of applying said first reference voltage and said step of applying a first control voltage overlap at least partially in time.
Claim 25
Dependent Claim
143 words
A display system comprising: a first substrate having a first plurality of pixel electrodes for receiving a first plurality of pixel data values representative a first image to be displayed; an electro-optic layer operatively coupled to said pixel electrodes; an electrode operatively coupled to said electro-optic layer, said display system displaying said first image and then applying a first control voltage to said electrode to alter a state of said electro-optic layer such that said first image is substantially not displayed and then said display system displaying a second image represented by a second plurality of pixel data values after said electrode receives a second control voltage, and wherein a voltage difference between said first control voltage and said second control voltage is reduced to reduce capacitive shifting of said second plurality of pixel data values on said first plurality of pixel electrodes.
Claim 26
Dependent Claim
143 words
A display system comprising: a first substrate having a first plurality of pixel electrodes for receiving a first plurality of pixel data values representative a first image to be displayed; an electro-optic layer operatively coupled to said pixel electrodes; an electrode operatively coupled to said electro-optic layer, said display system displaying said first image and then applying a first control voltage to said electrode to alter a state of said electro-optic layer such that said first image is substantially not displayed and then said display system displaying a second image represented by a second plurality of pixel data values after said electrode receives a second control voltage, and wherein a voltage difference between said first control voltage and said second control voltage is reduced to reduce capacitive shifting of said second plurality of pixel data values on said first plurality of pixel electrodes.
Claim 27
Dependent Claim
56 words
A display system as in claim 24 further comprising: a pixel electrode driver which is coupled to at least one of said first plurality of pixel electrodes, said pixel electrode driver determining a corresponding one of said second plurality of pixel data values relative to said second control voltage in order to reduce said capacitive shifting.
Claim 28
Dependent Claim
32 words
A display system as in claim 25 wherein said pixel electrode driver comprises a memory device which stores a lookup table which specifies said second control voltage and said first control voltage.
Claim 29
Dependent Claim
145 words
A display system as in claim 24 wherein said first control voltage is one of a high extreme and a low extreme and wherein said second control voltage is one of a high view extreme or a low view extreme and wherein when a maximum voltage across said electro-optic layer is desired for a frame or a subframe, a pixel electrode voltage corresponding to one of said second plurality of pixel data values, is one of a high pixel extreme voltage or a low pixel extreme voltage, and wherein, when said maximum voltage across said electro-optic layer is desired during display of said second image, said pixel electrode voltage is substantially at said low pixel extreme voltage when said second control voltage is substantially at said high view extreme and said first control voltage, for said frame or subframe, was previously at said high extreme.
Claim 30
Dependent Claim
65 words
A display system as in claim 24 wherein, when said maximum voltage across said electro-optic layer is desired during display of said second image, said pixel electrode voltage is substantially at said high pixel extreme voltage when said second control voltage is substantially at said low view extreme and said first control voltage, for said frame or said subframe, was previously at said low extreme.
Claim 31
Dependent Claim
65 words
A display system as in claim 24 wherein, when a minimum voltage across said electro-optic layer is desired during display of said second image, said pixel electrode voltage is substantially at said high pixel extreme voltage when said second control voltage is substantially at said high view extreme and said first control voltage, for said frame or said subframe, was previously at said high extreme.
Claim 32
Dependent Claim
65 words
A display system as in claim 24 wherein, when said minimum voltage across said electro-optic layer is desired during display of said second image, said pixel electrode voltage is substantially at said low pixel extreme voltage when said second control voltage is substantially at said low view extreme and said first control voltage, for said frame of said subframe, was previously at said low extreme.
Claim 33
Dependent Claim
33 words
A display system as in claim 27 wherein said first image comprises a first color subframe for a first color and said second image comprises a second color subframe for a second color.
Claim 34
Dependent Claim
33 words
A display system as in claim 31 wherein at least one of said low extreme and said high extreme of said first control voltage is determined by the color of said second color.
Claim 35
Dependent Claim
34 words
A method as in claim 31 wherein at least one of said high view extreme and said low view extreme of said second control voltage is determined by the color of said second color.
Claim 36
Dependent Claim
34 words
A display system as in claim 31 wherein at least one of said high pixel extreme voltage and said low pixel extreme voltage is determined in part by the color of said second color.
Claim 37
Dependent Claim
15 words
A display system as in claim 24 wherein said electrode is a cover glass electrode.
Claim 38
Dependent Claim
25 words
A display system as in claim 35 wherein said cover glass electrode receives a DC balanced signal over time with respect to a voltage level.
Claim 39
Dependent Claim
29 words
A display system as in claim 24 wherein said display system is segmented such that said electrode covers only a portion of a display surface of said display system.
Claim 40
Dependent Claim
33 words
A display system as in claim 35 wherein said display system comprises a liquid crystal disposed on a semiconductor substrate and said first plurality of pixel electrodes are disposed on said semiconductor substrate.
Claim 41
Dependent Claim
158 words
A display system as in claim 24 wherein said electro-optic layer comprises a liquid crystal material and wherein said liquid crystal has at least a first light altering state and a second light altering state and wherein said first control voltage sets said liquid crystal in said first light altering state such that light substantially cannot pass through said display system and wherein said second control voltage allows said liquid crystal to be set in said second light altering state such that light is capable of passing through said display system and wherein said display system further applies a third control voltage to said electrode after said first control voltage is applied to said electrode and before said electrode receives said second control voltage, wherein said third control voltage substantially holds said liquid crystal in substantially said first light altering state and said first control voltage rapidly places said liquid crystal in substantially said first light altering state.
Claim 42
Dependent Claim
39 words
A display system as in claim 39 wherein the application of said third control voltage and the application of said second plurality of pixel data values to said first plurality of pixel electrodes overlap at least partially in time.
Claim 43
Dependent Claim
38 words
A display system as in claim 24 wherein after said electrode receives said second control voltage, said electro-optic layer relaxes to a plurality of gray scale or color levels corresponding to said second plurality of pixel data values.
Claim 44
Dependent Claim
50 words
A display system as in claim 41 wherein for at least a set of pixels of said first plurality of pixel data values, said electro-optic layer has not reached a steady state display level specified by said first plurality of pixel data values when said first control voltage is applied.
Claim 45
Dependent Claim
42 words
A display system as in claim 24 further comprising an illuminator coupled to said display system, said illuminator providing at least one pulse of illumination which does not provide continuous illumination during the time that said second image is available for display.
Claim 46
Dependent Claim
22 words
A display system as in claim 43 wherein said second image is available for display while said second control voltage is applied.
Claim 47
Dependent Claim
68 words
A display system as in claim 40 further comprising: a control device coupled to at least one of said pixel electrodes, said control device applying a first reference voltage to at least one of said pixel electrodes before said display system displays said second image, and wherein the application of said first reference voltage and the application of said first control voltage overlap at least partially in time.
Claim 48
Independent Claim
194 words
A method for operating a display system, said display system comprising a first substrate having a plurality of pixel electrodes, an electro-optic layer operatively coupled to said pixel electrodes and an electrode operatively coupled to said electro-optic layer, said method comprising: applying a first plurality of pixel data values to said plurality of pixel electrodes such that a first pixel data represented by said first plurality of pixel data values is displayed; applying a first control voltage to said electrode to alter a state of said electro-optic layer such that said first pixel data is substantially not displayed; applying a second plurality of pixel data values to said plurality of pixel electrodes, said second plurality of pixel data values representing a second pixel data; displaying said second pixel data by applying a second control voltage to said electrode to alter said state of said electro-optic layer such that said second pixel data is displayed, and wherein at least one of said first control voltage, said second control voltage, and a pixel data value of said second plurality of pixel data values is determined by an illumination color used in displaying said second pixel data.
Claim 49
Independent Claim
194 words
A method for operating a display system, said display system comprising a first substrate having a plurality of pixel electrodes, an electro-optic layer operatively coupled to said pixel electrodes and an electrode operatively coupled to said electro-optic layer, said method comprising: applying a first plurality of pixel data values to said plurality of pixel electrodes such that a first pixel data represented by said first plurality of pixel data values is displayed; applying a first control voltage to said electrode to alter a state of said electro-optic layer such that said first pixel data is substantially not displayed; applying a second plurality of pixel data values to said plurality of pixel electrodes, said second plurality of pixel data values representing a second pixel data; displaying said second pixel data by applying a second control voltage to said electrode to alter said state of said electro-optic layer such that said second pixel data is displayed, and wherein at least one of said first control voltage, said second control voltage, and a pixel data value of said second plurality of pixel data values is determined by an illumination color used in displaying said second pixel data.
Claim 50
Dependent Claim
64 words
A method as in claim 46 wherein a first image is represented by said first pixel data and a second image is represented by said second pixel data and wherein said first image comprises a first color subframe for a first color and said second image comprises a second color subframe for a second color and wherein said illumination color is said second color.
Claim 51
Dependent Claim
31 words
A method as in claim 47 wherein said display system illuminates said electro-optic layer in a time sequential color manner with said first color, said second color and a third color.
Claim 52
Dependent Claim
41 words
A method as in claim 48 wherein said display system illuminates said electro-optic layer with at least one pulse of said illumination color which does not provide continuous illumination during a time that said second pixel data is available for display.
Claim 53
Dependent Claim
22 words
A method as in claim 49 wherein said second pixel data is available for display while said second control voltage is applied.
Claim 54
Dependent Claim
35 words
A method as in claim 48 wherein said display system comprises a liquid crystal disposed on a reflective semiconductor substrate and said plurality of pixel electrodes are reflective surfaces disposed on said reflective semiconductor substrate.
Claim 55
Dependent Claim
164 words
A method as in claim 48 wherein said electro-optic layer comprises a liquid crystal material and wherein said liquid crystal has at least a first light altering state and a second light altering state and wherein said first control voltage sets said liquid crystal in said first light altering state such that light substantially cannot pass through said display system and wherein said second control voltage allows said liquid crystal to be set in said second light altering state such that light is capable of passing through said display system and wherein said step of applying a first control voltage further comprises applying a third control voltage to said electrode after said first control voltage is applied to said electrode and before said step of applying said second control voltage, wherein said third control voltage substantially holds said liquid crystal in substantially said first light altering state and said first control voltage rapidly places said liquid crystal in substantially said first light altering state.
Claim 56
Dependent Claim
17 words
A method as in claim 52 wherein said third control voltage is determined by said illumination color.
Claim 57
Dependent Claim
33 words
A method as in claim 53 wherein said step of applying said third control voltage and said step of applying said second plurality of pixel data values overlap at least partially in time.
Claim 58
Dependent Claim
61 words
A method as in claim 46 wherein, after applying said second control voltage, said electro-optic layer relaxes to a plurality of gray scale or color levels corresponding to said second plurality of pixel data values and wherein a first capacitance between a pixel electrode and a reference electrode is larger than a second capacitance between said pixel electrode and said electrode.
Claim 59
Dependent Claim
43 words
A method as in claim 48 wherein for at least a set of pixels of said first pixel data, said electro-optic layer has not reached a steady state display level specified by said first pixel data when said first control voltage is applied.
Claim 60
Dependent Claim
42 words
A method as in claim 48 further comprising applying a first reference voltage to at least one of said pixel electrodes and wherein said applying said first reference voltage and said applying said first control voltage overlap at least partially in time.
Claim 61
Dependent Claim
14 words
A method as in claim 48 wherein said electrode is a cover glass electrode.
Claim 62
Dependent Claim
145 words
A display system comprising: a first substrate having a first plurality of pixel electrodes for receiving a first plurality of pixel data values representing a first image to be displayed; an electro-optic layer operatively coupled to said pixel electrodes; an electrode operatively coupled to said electro-optic layer, said display system displaying said first image and then applying a first control voltage to said electrode to alter a state of said electro-optic layer such that said first image is substantially not displayed and then said display system displaying a second image represented by a second plurality of pixel data values after said electrode receives a second control voltage, wherein at least one of said first control voltage, said second control voltage, and a pixel data value of said second plurality of pixel data values is determined by an illumination color used in displaying said second image.
Claim 63
Dependent Claim
145 words
A display system comprising: a first substrate having a first plurality of pixel electrodes for receiving a first plurality of pixel data values representing a first image to be displayed; an electro-optic layer operatively coupled to said pixel electrodes; an electrode operatively coupled to said electro-optic layer, said display system displaying said first image and then applying a first control voltage to said electrode to alter a state of said electro-optic layer such that said first image is substantially not displayed and then said display system displaying a second image represented by a second plurality of pixel data values after said electrode receives a second control voltage, wherein at least one of said first control voltage, said second control voltage, and a pixel data value of said second plurality of pixel data values is determined by an illumination color used in displaying said second image.
Claim 64
Dependent Claim
39 words
A display system as in claim 59 further comprising an illumination color dependent electrode driver coupled to said electrode, said illumination color dependent electrode driver determining for said illumination color said first control voltage and said second control voltage.
Claim 65
Dependent Claim
38 words
A display system as in claim 60 wherein said illumination color dependent electrode driver comprises a memory device which stores a lookup table which determines said second control voltage and said first control voltage for said illumination color.
Claim 66
Dependent Claim
40 words
A display system as in claim 59 further comprising an illumination color dependent pixel electrode driver coupled to said first plurality of pixel electrodes, said illumination color dependent pixel electrode driver determining for said illumination color said pixel data value.
Claim 67
Dependent Claim
40 words
A display system as in claim 60 further comprising an illumination color dependent pixel electrode driver coupled to said first plurality of pixel electrodes, said illumination color dependent pixel electrode driver determining for said illumination color said pixel data value.
Claim 68
Dependent Claim
40 words
A display system as in claim 63 wherein said illumination color dependent electrode driver comprises a digital-to-analog converter (DAC) which is coupled to said electrode and which converts digital values to analog values, wherein said analog values drive said electrode.
Claim 69
Dependent Claim
37 words
A display system as in claim 59 wherein said display system further comprises an illuminator which illuminates said electro-optic layer in a time sequential color manner with a first color, a second color and a third color.
Claim 70
Dependent Claim
42 words
A display system as in claim 65 wherein said first image comprises a first color subframe for said first color and said second image comprises a second color subframe for said second color and wherein said illumination color is said second color.
Claim 71
Dependent Claim
42 words
A display system as in claim 66 wherein said display system illuminates said electro-optic layer with at least one pulse of said illumination color which does not provide continuous illumination during a time that said second pixel data is available for display.
Claim 72
Dependent Claim
26 words
A display system as in claim 67 wherein said second pixel data is available for display while said second control voltage is applied to said electrode.
Claim 73
Dependent Claim
36 words
A display system as in claim 66 wherein said display system comprises a liquid crystal disposed on a reflective semiconductor substrate and said plurality of pixel electrodes are reflective surfaces disposed on said reflective semiconductor substrate.
Claim 74
Dependent Claim
158 words
A display system as in claim 66 wherein said electro-optic layer comprises a liquid crystal material and wherein said liquid crystal has at least a first light altering state and a second light altering state and wherein said first control voltage sets said liquid crystal in said first light altering state such that light substantially cannot pass through said display system and wherein said second control voltage allows said liquid crystal to be set in said second light altering state such that light is capable of passing through said display system and wherein said display system applies a third control voltage to said electrode after said first control voltage is applied to said electrode and before applying said second control voltage to said electrode, wherein said third control voltage substantially holds said liquid crystal in substantially said first light altering state and said first control voltage rapidly places said liquid crystal in substantially said first light altering state.
Claim 75
Dependent Claim
18 words
A display system as in claim 70 wherein said third control voltage is determined by said illumination color.
Claim 76
Dependent Claim
30 words
A display system as in claim 71 wherein application of said third control voltage and application of said second plurality of pixel data values overlap at least partially in time.
Claim 77
Dependent Claim
38 words
A display system as in claim 66 wherein, after said electrode receives said second control voltage, said electro-optic layer relaxes to a plurality of gray scale or color levels corresponding to said second plurality of pixel data values.
Claim 78
Dependent Claim
44 words
A display system as in claim 66 wherein for at least a set of pixels of said first pixel data, said electro-optic layer has not reached a steady state display level specified by said first pixel data when said first control voltage is applied.
Claim 79
Dependent Claim
53 words
A display system as in claim 66 further comprising a control device coupled to said electrode, said control device applies a first reference voltage to at least one of said pixel electrodes and wherein application of said first reference voltage and said applying said first control voltage overlap at least partially in time.
Claim 80
Dependent Claim
15 words
A display system as in claim 66 wherein said electrode is a cover glass electrode.
Claim 81
Independent Claim
231 words
A method for operating a display system, said display system comprising a first substrate having a plurality of pixel electrodes, an electro-optic layer operatively coupled to said pixel electrodes and an electrode operatively coupled to said electro-optic layer, said method comprising: applying a first plurality of pixel data values to said plurality of pixel electrodes such that a first pixel data represented by said first plurality of pixel data values is displayed; applying a first control voltage to said electrode to alter a state of said electro-optic layer such that said first pixel data is substantially not displayed; applying a second plurality of pixel data values to said plurality of pixel electrodes, said second plurality of pixel data values representing a second pixel data; displaying said second pixel data by applying a second control voltage to said electrode to alter said state of said electro-optic layer such that said second pixel data is displayed, wherein a first image is represented by said first pixel data and a second image is represented by said second pixel data and wherein over time said electrode receives a composite signal and wherein a first parameter of at least one of said first control voltage and said second control voltage is selected to provide an offset, for a portion of said composite signal, from a DC balanced signal over time with respect to a particular voltage.
Claim 82
Independent Claim
231 words
A method for operating a display system, said display system comprising a first substrate having a plurality of pixel electrodes, an electro-optic layer operatively coupled to said pixel electrodes and an electrode operatively coupled to said electro-optic layer, said method comprising: applying a first plurality of pixel data values to said plurality of pixel electrodes such that a first pixel data represented by said first plurality of pixel data values is displayed; applying a first control voltage to said electrode to alter a state of said electro-optic layer such that said first pixel data is substantially not displayed; applying a second plurality of pixel data values to said plurality of pixel electrodes, said second plurality of pixel data values representing a second pixel data; displaying said second pixel data by applying a second control voltage to said electrode to alter said state of said electro-optic layer such that said second pixel data is displayed, wherein a first image is represented by said first pixel data and a second image is represented by said second pixel data and wherein over time said electrode receives a composite signal and wherein a first parameter of at least one of said first control voltage and said second control voltage is selected to provide an offset, for a portion of said composite signal, from a DC balanced signal over time with respect to a particular voltage.
Claim 83
Dependent Claim
31 words
A method as in claim 77 further comprising compensating for said offset by selecting a second parameter of at least one of said first control voltage and said second control voltage.
Claim 84
Dependent Claim
27 words
A method as in claim 78 wherein said compensating substantially provides said DC balanced signal over time with respect to said particular voltage for said composite signal.
Claim 85
Dependent Claim
36 words
A method as in claim 79 wherein said offset provides substantially uniform response of said electro-optic layer independent of a polarity of electric fields generated across said electro-optic layer by said pixel electrodes and said electrode.
Claim 86
Dependent Claim
40 words
A method as in claim 79 wherein a voltage difference between said first control voltage and said second control voltage is selected to reduce capacitive shifting of said second plurality of pixel data values on said plurality of pixel electrodes.
Claim 87
Dependent Claim
146 words
A method as in claim 79 wherein said first control voltage is one of a high extreme and a low extreme and wherein said second control voltage is one of a high view extreme or a low view extreme and wherein when a maximum voltage across said electro-optic layer is desired for a frame or a subframe, a pixel electrode voltage, corresponding to one of said second plurality of pixel data values, is one of a high pixel extreme voltage or a low pixel extreme voltage, and wherein, when said maximum voltage across said electro-optic layer is desired during display of said second pixel data, said pixel electrode voltage is substantially at said low pixel extreme voltage when said second control voltage is substantially at said high view extreme and said first control voltage, for said frame or said subframe, was previously at said high extreme.
Claim 88
Dependent Claim
65 words
A method as in claim 82 wherein, when said maximum voltage across said electro-optic layer is desired during display of said second pixel data, said pixel electrode voltage is substantially at said high pixel extreme voltage when said second control voltage is substantially at said low view extreme and said first control voltage, for said frame or said subframe, was previously at said low extreme.
Claim 89
Dependent Claim
45 words
A method as in claim 79 wherein at least one of said first control voltage, said second control voltage, and a pixel data value of said second plurality of pixel data values is determined by an illumination color used in displaying said second pixel data.
Claim 90
Dependent Claim
45 words
A method as in claim 82 wherein at least one of said first control voltage, said second control voltage, and a pixel data value of said second plurality of pixel data values is determined by an illumination color used in displaying said second pixel data.
Claim 91
Dependent Claim
45 words
A method as in claim 83 wherein at least one of said first control voltage, said second control voltage, and a pixel data value of said second plurality of pixel data values is determined by an illumination color used in displaying said second pixel data.
Claim 92
Dependent Claim
37 words
A method as in claim 85 wherein said first image comprises a first color subframe for a first color and said second image comprises a second color subframe for a second color which is said illumination color.
Claim 93
Dependent Claim
33 words
A method as in claim 79 wherein said step of applying said first control voltage and said step of applying said second plurality of pixel data values overlap at least partially in time.
Claim 94
Dependent Claim
14 words
A method as in claim 88 wherein said electrode is a cover glass electrode.
Claim 95
Dependent Claim
33 words
A method as in claim 89 wherein said display system comprises a liquid crystal disposed on a reflective semiconductor substrate and said plurality of pixel electrodes are disposed on said reflective semiconductor substrate.
Claim 96
Dependent Claim
163 words
A method as in claim 79 wherein said electro-optic layer comprises a liquid crystal material and wherein said liquid crystal has at least a first light altering state and a second light altering state and wherein said first control voltage sets said liquid crystal in said first light altering state such that light substantially cannot pass through said display system and wherein said second control voltage allows said liquid crystal to be set in said second light altering state such that light is capable of passing through said display system and wherein said step of applying a first control voltage further comprises applying a third control voltage to said electrode after said first control voltage is applied to said electrode and before said step of applying said second control voltage, wherein said third control voltage holds said liquid crystal in substantially said first light altering state and said first control voltage rapidly places said liquid crystal in substantially said first light altering state.
Claim 97
Dependent Claim
33 words
A method as in claim 91 wherein said step of applying said third control voltage and said step of applying said second plurality of pixel data values overlap at least partially in time.
Claim 98
Dependent Claim
30 words
A method as in claim 92 wherein said step of applying said third control voltage and said step of applying said second plurality of pixel data values occur substantially contemporaneously.
Claim 99
Dependent Claim
61 words
A method as in claim 77 wherein after applying said second control voltage, said electro-optic layer relaxes to a plurality of gray scale or color levels corresponding to said second plurality of pixel data values and wherein a first capacitance between a pixel electrode and a reference electrode is larger than a second capacitance between said pixel electrode and said electrode.
Claim 100
Dependent Claim
43 words
A method as in claim 94 wherein for at least a set of pixels of said first pixel data, said electro-optic layer has not reached a steady state display level specified by said first pixel data when said first control voltage is applied.
Claim 101
Dependent Claim
37 words
A method as in claim 79 further comprising illuminating said display system with at least one pulse of illumination which does not provide continuous illumination during the time that said second pixel data is available for display.
Claim 102
Dependent Claim
22 words
A method as in claim 96 wherein said second pixel data is available for display while said second control voltage is applied.
Claim 103
Dependent Claim
46 words
A method as in claim 92 further comprising applying a first reference voltage to at least one of said pixel electrodes and wherein said step of applying said first reference voltage and said step of applying a first control voltage overlap at least partially in time.
Claim 104
Dependent Claim
168 words
A display system comprising: a first substrate having a first plurality of pixel electrodes for receiving a first plurality of pixel data values representing a first image to be displayed; an electro-optic layer operatively coupled to said pixel electrodes; an electrode operatively coupled to said electro-optic layer, said display system displaying said first image and then applying a first control voltage to said electrode to alter a state of said electro-optic layer such that said first image is substantially not displayed and then said display system displaying a second image represented by a second plurality of pixel data values after said electrode receives a second control voltage; an electrode driver coupled to said electrode, wherein over time said electrode receives a composite signal and wherein a first parameter of at least one of said first control voltage and said second control voltage is selected to provide an offset, for a portion of said composite signal, from a DC balanced signal over time with respect to a particular voltage.
Claim 105
Dependent Claim
168 words
A display system comprising: a first substrate having a first plurality of pixel electrodes for receiving a first plurality of pixel data values representing a first image to be displayed; an electro-optic layer operatively coupled to said pixel electrodes; an electrode operatively coupled to said electro-optic layer, said display system displaying said first image and then applying a first control voltage to said electrode to alter a state of said electro-optic layer such that said first image is substantially not displayed and then said display system displaying a second image represented by a second plurality of pixel data values after said electrode receives a second control voltage; an electrode driver coupled to said electrode, wherein over time said electrode receives a composite signal and wherein a first parameter of at least one of said first control voltage and said second control voltage is selected to provide an offset, for a portion of said composite signal, from a DC balanced signal over time with respect to a particular voltage.
Claim 106
Dependent Claim
41 words
A display system as in claim 99 further comprising: a compensator coupled to said electrode driver, said compensator compensating for said offset by selecting a second parameter of at least one of said first control voltage and said second control voltage.
Claim 107
Dependent Claim
32 words
A method as in claim 100 wherein said compensator comprises a lookup table and substantially provides said DC balanced signal over time with respect to said particular voltage for said composite signal.
Claim 108
Dependent Claim
36 words
A method as in claim 101 wherein said offset provides substantially uniform response of said electro-optic layer independent of a polarity of electric fields generated across said electro-optic layer by said pixel electrodes and said electrode.
Claim 109
Dependent Claim
41 words
A display system as in claim 101 wherein a voltage difference between said first control voltage and said second control voltage is selected to reduce capacitive shifting of said second plurality of pixel data values on said plurality of pixel electrodes.
Claim 110
Dependent Claim
46 words
A display system as in claim 101 wherein at least one of said first control voltage, said second control voltage, and a pixel data value of said second plurality of pixel data values is determined by an illumination color used in displaying said second pixel data.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-04-04 | 2003-10-04 | 2004-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-04-04 | 2007-10-04 | 2008-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-04-04 | 2011-10-04 | 2012-04-04 | $7700.00 | Window Closed / Lapsed |