Patent US6535191B1 successfully refreshed from Google Patents.
US6535191B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid crystal display device
Assignee: Sharp Corp
•
Filing: 2000-03-13
•
Granted: 2003-03-18
•
Expires: 2020-03-13
Abstract
Abstract A liquid crystal display device of the present invention includes: a main substrate having a main electrode; a counter substrate having a counter electrode; a liquid crystal material interposed between the main substrate and the counter substrate; and a control section for controlling a response start time of the liquid crystal material by a potential difference between a main electrode voltage that is applied to the main electrode during one frame and a counter electrode voltage that changes in a substantially continuous manner during the one frame, and for changing a transmissivity of the liquid crystal display device based on a magnitude of the main electrode voltage.
Inventors
- 👤 Koichi Miyachi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:15
CPC Classifications
B; B25; B25F; B25F1/00; B25F1/02; G; G09; G09G; G09G3/00; G09G3/20; G09G3/34; G09G3/36; G09G3/3611; G09G3/3648; G09G3/3651; B25G; B25G1/00; B25G1/10; G09G2310/00; G09G2310/06; G09G2310/061; G09G2310/066; G09G3/2007
Claims Analysis
Total Claims: 50
Claim 1
Independent Claim
103 words
A liquid crystal display device comprising: a main substrate having a main electrode; a counter substrate having a counter electrode; a liquid crystal material interposed between the main substrate and the counter substrate; and a control section for controlling a response start time of the liquid crystal material by a potential difference between a main electrode voltage that is applied to the main electrode during one frame and a counter electrode voltage that changes in a substantially continuous manner during the one frame, and for changing a transmissivity of the liquid crystal display device based on a magnitude of the main electrode voltage.
Claim 2
Dependent Claim
103 words
A liquid crystal display device comprising: a main substrate having a main electrode; a counter substrate having a counter electrode; a liquid crystal material interposed between the main substrate and the counter substrate; and a control section for controlling a response start time of the liquid crystal material by a potential difference between a main electrode voltage that is applied to the main electrode during one frame and a counter electrode voltage that changes in a substantially continuous manner during the one frame, and for changing a transmissivity of the liquid crystal display device based on a magnitude of the main electrode voltage.
Claim 3
Dependent Claim
41 words
A liquid crystal display device according to claim 1 , wherein the control section changes the transmissivity of the liquid crystal display device by changing a direct-current voltage component of the main electrode voltage that is applied to the main electrode.
Claim 4
Dependent Claim
41 words
A liquid crystal display device according to claim 1 , wherein the control section changes the transmissivity of the liquid crystal display device by changing a direct-current voltage component of the counter electrode voltage that is applied to the counter electrode.
Claim 5
Dependent Claim
43 words
A liquid crystal display device according to claim 1 , wherein the control section changes the transmissivity of the liquid crystal display device by changing a slope angle of a waveform of the counter electrode voltage with respect to the passage of time.
Claim 6
Dependent Claim
125 words
A liquid crystal display device comprising: a TFT substrate having thin film transistors arranged in a matrix; a counter substrate having a transparent electrode; a liquid crystal material interposed between the TFT substrate and the counter substrate; and a control section for applying a voltage that changes in a substantially continuous manner to a storage capacitor line during a period within one frame, thereby writing a drain voltage in a drain electrode during the one frame, wherein a response start time of the liquid crystal material is determined by a magnitude of the drain voltage, and a transmissivity of the liquid crystal display device is determined by a potential difference between a potential of the storage capacitor line and a potential of the drain electrode.
Claim 7
Dependent Claim
125 words
A liquid crystal display device comprising: a TFT substrate having thin film transistors arranged in a matrix; a counter substrate having a transparent electrode; a liquid crystal material interposed between the TFT substrate and the counter substrate; and a control section for applying a voltage that changes in a substantially continuous manner to a storage capacitor line during a period within one frame, thereby writing a drain voltage in a drain electrode during the one frame, wherein a response start time of the liquid crystal material is determined by a magnitude of the drain voltage, and a transmissivity of the liquid crystal display device is determined by a potential difference between a potential of the storage capacitor line and a potential of the drain electrode.
Claim 8
Dependent Claim
38 words
A liquid crystal display device according to claim 5 , wherein the storage capacitor line is connected to a power supply which can be controlled independently of the power supply for applying the voltage to the counter substrate.
Claim 9
Dependent Claim
65 words
A liquid crystal display device according to claim 5 , wherein: an odd-numbered line storage capacitor line to be connected to pixels of odd-numbered lines is connected to a first power supply; an even-numbered line storage capacitor line to be connected to pixels of even-numbered lines is connected to a second power supply; and the first power supply is different from the second power supply.
Claim 10
Dependent Claim
41 words
A liquid crystal display device according to claim 5 , wherein the one frame includes a period during which a voltage for resetting an orientation of the liquid crystal material to the initial state is applied to the storage capacitor line.
Claim 11
Dependent Claim
43 words
A liquid crystal display device according to claim 5 , wherein the control section applies the voltage for resetting the orientation of the liquid crystal material to the initial state to the liquid crystal material through a source line during the one frame.
Claim 12
Dependent Claim
54 words
A liquid crystal display device according to claim 1 , wherein the one frame includes a period during which at least one of the voltage to be applied to the counter electrode and the voltage to be applied to the main electrode resets the orientation of the liquid crystal material to the initial state.
Claim 13
Dependent Claim
43 words
A liquid crystal display device according to claim 5 , wherein, during the one frame, after a signal has been written in the thin film transistor element, the voltage that changes in a substantially continuous manner is applied to the storage capacitor line.
Claim 14
Dependent Claim
67 words
A liquid crystal display device according to claim 5 , wherein the one frame includes a period during which a signal is written in the thin film transistor element, a period during which a voltage to be applied to the storage capacitor line changes in a substantially continuous manner, and a period during which the orientation of the liquid crystal material is reset to the initial state.
Claim 15
Dependent Claim
88 words
A liquid crystal display device comprising: a main substrate having a main electrode; a counter substrate having a counter electrode; a liquid crystal material interposed between the main substrate and the counter substrate; and a control section for applying a voltage that changes in a substantially continuous manner to the liquid crystal material for a predetermined period within one frame, wherein a response start time of the liquid crystal material and a transmissivity of the liquid crystal display device are changed by changing an amplitude of the voltage.
Claim 16
Dependent Claim
88 words
A liquid crystal display device comprising: a main substrate having a main electrode; a counter substrate having a counter electrode; a liquid crystal material interposed between the main substrate and the counter substrate; and a control section for applying a voltage that changes in a substantially continuous manner to the liquid crystal material for a predetermined period within one frame, wherein a response start time of the liquid crystal material and a transmissivity of the liquid crystal display device are changed by changing an amplitude of the voltage.
Claim 17
Dependent Claim
129 words
A liquid crystal display device comprising: a TFT substrate having thin film transistors arranged in a matrix; a counter substrate having a transparent electrode; a liquid crystal material interposed between the TFT substrate and the counter substrate; an element having a resistance value that changes in accordance with a voltage applied to a memory capacitor of a pixel; and a control section for applying a voltage that changes in a substantially continuous manner to the element during a period within one frame, wherein the liquid crystal material is connected in series to the element, and a response start time of the liquid crystal material and a transmissivity of the liquid crystal display device are changed by changing an amplitude of the voltage that changes in a substantially continuous manner.
Claim 18
Dependent Claim
129 words
A liquid crystal display device comprising: a TFT substrate having thin film transistors arranged in a matrix; a counter substrate having a transparent electrode; a liquid crystal material interposed between the TFT substrate and the counter substrate; an element having a resistance value that changes in accordance with a voltage applied to a memory capacitor of a pixel; and a control section for applying a voltage that changes in a substantially continuous manner to the element during a period within one frame, wherein the liquid crystal material is connected in series to the element, and a response start time of the liquid crystal material and a transmissivity of the liquid crystal display device are changed by changing an amplitude of the voltage that changes in a substantially continuous manner.
Claim 19
Dependent Claim
64 words
A liquid crystal display device according to claim 13 , wherein: the control section includes a first power supply for applying a voltage to the liquid crystal display material through an odd-numbered line and a second power supply for applying a voltage to the liquid crystal display material through an even-numbered line; and the first power supply is different from the second power supply.
Claim 20
Dependent Claim
41 words
A liquid crystal display device according to claim 13 , wherein the one frame includes a period during which a voltage for resetting an orientation of the liquid crystal material to an initial state is applied to the liquid crystal material.
Claim 21
Dependent Claim
39 words
A liquid crystal display device according to claim 13 , wherein the one frame includes a period during which a voltage for resetting an orientation of the liquid crystal material to an initial state is applied to the element.
Claim 22
Dependent Claim
39 words
A liquid crystal display device according to claim 14 , wherein the one frame includes a period during which a voltage for resetting an orientation of the liquid crystal material to an initial state is applied to the element.
Claim 23
Dependent Claim
39 words
A liquid crystal display device according to claim 14 , wherein the control section applies a voltage for resetting to an initial state an orientation of the liquid crystal material to the liquid crystal material through a source line.
Claim 24
Dependent Claim
41 words
A liquid crystal display device according to claim 14 , wherein, during the one frame, after a signal has been written in the thin film transistor element, the voltage that changes in a substantially continuous manner is applied to the element.
Claim 25
Dependent Claim
68 words
A liquid crystal display device according to claim 14 , wherein the one frame includes a first period during which a signal is written in the thin film transistor element, a second period during which a voltage to be applied to the element changes in a substantially continuous manner, and a third period during which the orientation of the liquid crystal material is reset to the initial state.
Claim 26
Dependent Claim
21 words
A liquid crystal display device according to claim 1 , wherein the liquid crystal material is a ferroelectric liquid crystal material.
Claim 27
Dependent Claim
21 words
A liquid crystal display device according to claim 5 , wherein the liquid crystal material is a ferroelectric liquid crystal material.
Claim 28
Dependent Claim
21 words
A liquid crystal display device according to claim 13 , wherein the liquid crystal material is a ferroelectric liquid crystal material.
Claim 29
Dependent Claim
21 words
A liquid crystal display device according to claim 14 , wherein the liquid crystal material is a ferroelectric liquid crystal material.
Claim 30
Dependent Claim
21 words
A liquid crystal display device according to claim 1 , wherein the liquid crystal material is an antiferroelectric liquid crystal material.
Claim 31
Dependent Claim
21 words
A liquid crystal display device according to claim 5 , wherein the liquid crystal material is an antiferroelectric liquid crystal material.
Claim 32
Dependent Claim
21 words
A liquid crystal display device according to claim 13 , wherein the liquid crystal material is an antiferroelectric liquid crystal material.
Claim 33
Dependent Claim
21 words
A liquid crystal display device according to claim 14 , wherein the liquid crystal material is an antiferroelectric liquid crystal material.
Claim 34
Dependent Claim
26 words
A liquid crystal display device according to claim 1 , wherein the liquid crystal material has a liquid crystal mode including two or more stable states.
Claim 35
Dependent Claim
26 words
A liquid crystal display device according to claim 5 , wherein the liquid crystal material has a liquid crystal mode including two or more stable states.
Claim 36
Dependent Claim
26 words
A liquid crystal display device according to claim 13 , wherein the liquid crystal material has a liquid crystal mode including two or more stable states.
Claim 37
Dependent Claim
26 words
A liquid crystal display device according to claim 14 , wherein the liquid crystal material has a liquid crystal mode including two or more stable states.
Claim 38
Dependent Claim
25 words
A liquid crystal display device according to claim 1 , comprising a light source which is off for a predetermined period within the one frame.
Claim 39
Dependent Claim
25 words
A liquid crystal display device according to claim 5 , comprising a light source which is off for a predetermined period within the one frame.
Claim 40
Dependent Claim
25 words
A liquid crystal display device according to claim 13 , comprising a light source which is off for a predetermined period within the one frame.
Claim 41
Dependent Claim
25 words
A liquid crystal display device according to claim 14 , comprising a light source which is off for a predetermined period within the one frame.
Claim 42
Dependent Claim
63 words
A liquid crystal display device according to claim 1 , wherein: the liquid crystal display device includes a red light source, a green light source, and a blue light source, and field serial color display is performed by sequentially switching from one to another among the light sources for each frame, whereby a single color image is obtained from a plurality of frames.
Claim 43
Dependent Claim
63 words
A liquid crystal display device according to claim 5 , wherein: the liquid crystal display device includes a red light source, a green light source, and a blue light source, and field serial color display is performed by sequentially switching from one to another among the light sources for each frame, whereby a single color image is obtained from a plurality of frames.
Claim 44
Dependent Claim
63 words
A liquid crystal display device according to claim 13 , wherein: the liquid crystal display device includes a red light source, a green light source, and a blue light source, and field serial color display is performed by sequentially switching from one to another among the light sources for each frame, whereby a single color image is obtained from a plurality of frames.
Claim 45
Dependent Claim
63 words
A liquid crystal display device according to claim 14 , wherein: the liquid crystal display device includes a red light source, a green light source, and a blue light source, and field serial color display is performed by sequentially switching from one to another among the light sources for each frame, whereby a single color image is obtained from a plurality of frames.
Claim 46
Dependent Claim
42 words
A liquid crystal display device according to claim 5 , wherein the control section controls a waveform of a voltage to be applied to the storage capacitor line, thereby adjusting at least one gray scale property of the liquid crystal display device.
Claim 47
Dependent Claim
42 words
A liquid crystal display device according to claim 13 , wherein the control section controls a waveform of a voltage to be applied to the liquid crystal material, thereby adjusting at least one gray scale property of the liquid crystal display device.
Claim 48
Dependent Claim
40 words
A liquid crystal display device according to claim 14 , wherein the control section controls a waveform of a voltage to be applied to the element, thereby adjusting at least one gray scale property of the liquid crystal display device.
Claim 49
Dependent Claim
42 words
A liquid crystal display device according to claim 5 , wherein the control section adjusts a source signal voltage to be written corresponding to a gray scale signal, thereby adjusting at least one gray scale property of the liquid crystal display device.
Claim 50
Dependent Claim
49 words
A liquid crystal display device according to claim 14 , wherein the control section adjusts a source signal voltage that is to be written in the element and that corresponds to a gray scale signal, thereby adjusting at least one gray scale property of the liquid crystal display device.
References Cited (Backward Citations)
US3677261A
Cited
JPH0618854A
Cited
US4711531A
Cited
US5040874A
Cited
US5731794A
Cited
US5724112A
Cited
JPH0850278A
Cited
US5724116A
Cited
US5923310A
Cited
US6313818B1
Cited
US5977942A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2006-03-17 | 2006-09-16 | 2007-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-03-17 | 2010-09-16 | 2011-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-03-17 | 2014-09-16 | 2015-03-18 | $7700.00 | Window Closed / Lapsed |