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US5200741A
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Liquid-crystal display apparatus
Assignee: Casio Computer Co Ltd
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Filing: 1989-11-27
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Granted: 1993-04-06
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Expires: 2009-11-27
Abstract
Abstract A liquid-crystal display apparatus having scanning electrodes and signal electrodes, both being disposed in a matrix arrangement, which divides a selection period for a scanning electrode by m and performs a display based on same data for m times, and which makes different a wave level of a scanning-electrode driving signal during each divided selection period. A liquid-crystal panel driving circuit for driving a liquid crystal panel having scanning-electrodes and signal electrodes, both being disposed in a matrix arrangement, which divides a selection period for a scanning electrode by m and performs a display based on same data for m times, and which makes different a wave level of a signal-electrode driving signal during each divided selection period. A liquid-crystal panel driving circuit for driving a liquid crystal panel having scanning electrodes and signal electrodes, both being disposed in a matrix arrangement, which divides a selection period for a scanning electrode by m and performs a display based on same data for m times, and which makes different respective wave levels of a signal-electrode driving signal and a scanning-electrode driving signal during each divided selection period.
Inventors
- 👤 Minoru Usui
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:13
CPC Classifications
G; G09; G09G; G09G3/00; G09G3/20; G09G3/34; G09G3/36; G09G3/3611; G09G3/3696; G09G3/3622; G09G3/2007; G09G3/2014
Claims Analysis
Total Claims: 52
Claim 1
Independent Claim
150 words
A liquid-crystal display apparatus having liquid crystals operable with a predetermined driving voltage applied during respective display periods, comprising: liquid-crystal display panel means including scanning electrodes and signal electrodes, both of which are disposed in a matrix arrangement; display control means for dividing a selection period during which said scanning electrodes are to be drive into m divided periods wherein m is a positive integer, and for repeatedly displaying a picture based on common video data for m times; and scanning-electrode driving means for driving said scanning electrodes with a plurality of voltage values each corresponding to each of m divided periods divided by said display control means so that a different voltage difference is applied between said scanning electrodes and said signal electrodes in each respective divided period, and an effective driving voltage applied to said scanning electrodes during the display period is equivalent to said predetermined driving voltage.
Claim 2
Dependent Claim
150 words
A liquid-crystal display apparatus having liquid crystals operable with a predetermined driving voltage applied during respective display periods, comprising: liquid-crystal display panel means including scanning electrodes and signal electrodes, both of which are disposed in a matrix arrangement; display control means for dividing a selection period during which said scanning electrodes are to be drive into m divided periods wherein m is a positive integer, and for repeatedly displaying a picture based on common video data for m times; and scanning-electrode driving means for driving said scanning electrodes with a plurality of voltage values each corresponding to each of m divided periods divided by said display control means so that a different voltage difference is applied between said scanning electrodes and said signal electrodes in each respective divided period, and an effective driving voltage applied to said scanning electrodes during the display period is equivalent to said predetermined driving voltage.
Claim 3
Dependent Claim
49 words
A liquid-crystal display apparatus according to claim 1, wherein said display control means divides the selection period during which the scanning electrodes are to be driven into m continuous periods wherein m is a positive integer, and repeatedly displays a picture based on common video data for m times.
Claim 4
Dependent Claim
153 words
A liquid-crystal display apparatus having liquid crystals operable with a predetermined driving voltage applied during respective display periods, comprising: liquid-crystal display panel means including scanning electrodes and signal electrodes, both of which are disposed in a matrix arrangement; display control means for dividing respective display periods during which said signal electrodes are to be driven into m divided periods wherein m is a positive integer, and for repeatedly displaying a picture based on common video data for m times; and signal-electrode driving means for driving said signal electrodes with a plurality of voltage values each corresponding to each of m divided periods divided by said display control means so that a different voltage difference is applied between said scanning electrodes and said signal electrodes in each respective one of said divided periods, and an effective driving voltage applied to said signal electrodes during the display period is equivalent to said predetermined driving voltage.
Claim 5
Dependent Claim
153 words
A liquid-crystal display apparatus having liquid crystals operable with a predetermined driving voltage applied during respective display periods, comprising: liquid-crystal display panel means including scanning electrodes and signal electrodes, both of which are disposed in a matrix arrangement; display control means for dividing respective display periods during which said signal electrodes are to be driven into m divided periods wherein m is a positive integer, and for repeatedly displaying a picture based on common video data for m times; and signal-electrode driving means for driving said signal electrodes with a plurality of voltage values each corresponding to each of m divided periods divided by said display control means so that a different voltage difference is applied between said scanning electrodes and said signal electrodes in each respective one of said divided periods, and an effective driving voltage applied to said signal electrodes during the display period is equivalent to said predetermined driving voltage.
Claim 6
Dependent Claim
49 words
A liquid-crystal display apparatus according to claim 3, wherein said display control means divides the selection period during which the scanning electrodes are to be driven into m continuous periods wherein m is a positive integer, and repeatedly displays a picture based on common video data for m times.
Claim 7
Dependent Claim
153 words
A liquid-crystal display apparatus having liquid crystals operable with a predetermined driving voltage applied during respective display periods, comprising: liquid-crystal display panel means including scanning electrodes and signal electrodes, both of which are disposed in a matrix arrangement; display control means for dividing a selection period during which said scanning electrodes are to be driven into m divided periods wherein m is a positive integer, and for repeatedly displaying a picture based on common video data for m times; and electrode driving means for driving said signal electrodes and said scanning electrodes with voltages each having a value corresponding to one of the divided periods divided by said display control means so that a different voltage difference is applied between said scanning electrodes and said signal electrodes in the respective divided periods, and an effective driving voltage applied to said scanning electrodes during the display period is equivalent to said predetermined driving voltage.
Claim 8
Dependent Claim
153 words
A liquid-crystal display apparatus having liquid crystals operable with a predetermined driving voltage applied during respective display periods, comprising: liquid-crystal display panel means including scanning electrodes and signal electrodes, both of which are disposed in a matrix arrangement; display control means for dividing a selection period during which said scanning electrodes are to be driven into m divided periods wherein m is a positive integer, and for repeatedly displaying a picture based on common video data for m times; and electrode driving means for driving said signal electrodes and said scanning electrodes with voltages each having a value corresponding to one of the divided periods divided by said display control means so that a different voltage difference is applied between said scanning electrodes and said signal electrodes in the respective divided periods, and an effective driving voltage applied to said scanning electrodes during the display period is equivalent to said predetermined driving voltage.
Claim 9
Dependent Claim
49 words
A liquid-crystal display apparatus according to claim 5, wherein said display control means divides the selection period during which said scanning electrodes are to be driven into m continuous period wherein m is a positive integer, and repeatedly displays a picture based on common video data for m times.
Claim 10
Dependent Claim
139 words
A liquid-crystal display apparatus having liquid crystals operable with a predetermined driving voltage applied during respective display periods, comprising: liquid-crystal display panel means including scanning electrodes and signal electrodes both of which are disposed in a matrix arrangement; display control means for dividing respective selection periods during which said scanning electrodes are to be driven into m divided periods wherein m is a positive integer, and for repeatedly displaying a picture based on common video data for m times; and driving-voltage control means for selecting driving voltage from among at least five driving voltages each having a different voltage value such that different voltage values each corresponding to a respective divided period are applied to said scanning electrodes, and an effective driving voltage applied to said signal electrodes during the display period is equivalent to said predetermined driving voltage.
Claim 11
Dependent Claim
139 words
A liquid-crystal display apparatus having liquid crystals operable with a predetermined driving voltage applied during respective display periods, comprising: liquid-crystal display panel means including scanning electrodes and signal electrodes both of which are disposed in a matrix arrangement; display control means for dividing respective selection periods during which said scanning electrodes are to be driven into m divided periods wherein m is a positive integer, and for repeatedly displaying a picture based on common video data for m times; and driving-voltage control means for selecting driving voltage from among at least five driving voltages each having a different voltage value such that different voltage values each corresponding to a respective divided period are applied to said scanning electrodes, and an effective driving voltage applied to said signal electrodes during the display period is equivalent to said predetermined driving voltage.
Claim 12
Dependent Claim
49 words
A liquid-crystal display apparatus according to claim 7, wherein said display control means divides the selection period during which said scanning electrodes are to be driven into m continuous periods wherein m is a positive integer, and repeatedly displays a picture based on common video data for m times.
Claim 13
Dependent Claim
140 words
A liquid-crystal display apparatus having liquid crystals operable with a predetermined driving voltage applied during respective display periods, comprising: liquid-crystal display panel means including scanning electrodes and signal electrodes both of which are disposed in a matrix arrangement; display control means for dividing respective selection periods during which said scanning electrodes are to be driven into m divided periods wherein m is a positive integer, and for repeatedly displaying a picture based on common video data for m times; and driving-voltage control means for selecting a driving voltage from among at least four driving voltages each having a different voltage value such that different voltage values each corresponding to the respective divided periods are applied to said signal electrodes, and an effective driving voltage applied to said signal electrodes during the display period is equivalent to said predetermined driving voltage.
Claim 14
Dependent Claim
140 words
A liquid-crystal display apparatus having liquid crystals operable with a predetermined driving voltage applied during respective display periods, comprising: liquid-crystal display panel means including scanning electrodes and signal electrodes both of which are disposed in a matrix arrangement; display control means for dividing respective selection periods during which said scanning electrodes are to be driven into m divided periods wherein m is a positive integer, and for repeatedly displaying a picture based on common video data for m times; and driving-voltage control means for selecting a driving voltage from among at least four driving voltages each having a different voltage value such that different voltage values each corresponding to the respective divided periods are applied to said signal electrodes, and an effective driving voltage applied to said signal electrodes during the display period is equivalent to said predetermined driving voltage.
Claim 15
Dependent Claim
49 words
A liquid-crystal display apparatus according to claim 9, wherein said display control means divides the selection period during which said scanning electrodes are to be driven into m continuous periods wherein m is a positive integer, and repeatedly displays a picture based on common video data for m times.
Claim 16
Dependent Claim
138 words
A liquid-crystal display apparatus having liquid crystals operable with a predetermined driving voltage applied during respective display periods, comprising: liquid-crystal display panel means including scanning electrodes and signal electrodes both of which are disposed in a matrix arrangement; display control means for dividing respective selection periods during which said scanning electrodes are to be driven into m divided periods wherein m is a positive integer, and for repeatedly displaying a picture based on common video data for m times; and driving-voltage control means for selecting a driving voltage from among at least four driving voltages such that different voltage values each corresponding to the respective divided periods are applied to said scanning electrodes and said signal electrodes, and an effective driving voltage applied to said signal electrodes during the display period is equivalent to said predetermined driving voltage.
Claim 17
Dependent Claim
138 words
A liquid-crystal display apparatus having liquid crystals operable with a predetermined driving voltage applied during respective display periods, comprising: liquid-crystal display panel means including scanning electrodes and signal electrodes both of which are disposed in a matrix arrangement; display control means for dividing respective selection periods during which said scanning electrodes are to be driven into m divided periods wherein m is a positive integer, and for repeatedly displaying a picture based on common video data for m times; and driving-voltage control means for selecting a driving voltage from among at least four driving voltages such that different voltage values each corresponding to the respective divided periods are applied to said scanning electrodes and said signal electrodes, and an effective driving voltage applied to said signal electrodes during the display period is equivalent to said predetermined driving voltage.
Claim 18
Dependent Claim
49 words
A liquid-crystal display apparatus according to claim 11, wherein said display control means divides the selection period during which said scanning electrodes are to be driven into m continuous periods wherein m is a positive integer, and displays repeatedly a picture based on common video data for m times.
Claim 19
Dependent Claim
91 words
A liquid-crystal display apparatus, comprising: liquid-crystal display panel means including scanning electrodes and signal electrodes, both of which are disposed in a matrix arrangement; display control means for dividing a selection period during which said scanning electrodes are to be driven into m continuous periods wherein m is a positive integer, and for displaying repeatedly a picture based on common video data for m times; and electrode driving means for driving said scanning and said signal electrodes with a plurality of driving-waveform levels each corresponding to each of m continuous periods.
Claim 20
Dependent Claim
91 words
A liquid-crystal display apparatus, comprising: liquid-crystal display panel means including scanning electrodes and signal electrodes, both of which are disposed in a matrix arrangement; display control means for dividing a selection period during which said scanning electrodes are to be driven into m continuous periods wherein m is a positive integer, and for displaying repeatedly a picture based on common video data for m times; and electrode driving means for driving said scanning and said signal electrodes with a plurality of driving-waveform levels each corresponding to each of m continuous periods.
Claim 21
Independent Claim
127 words
A system for driving a liquid-crystal display-panel device having scanning electrodes and signal electrodes to which scanning signals and display signals are supplied, respectively, the system comprising: selecting means for selecting one of said scanning electrodes successively; scanning-signal supplying means for applying a first potential to the scanning electrode and thereafter applying at least a second potential thereto such that a potential difference applied between said selected scanning electrode and said signal electrodes substantially changes while said scanning electrode is selected by said selecting means; and display-signal supplying means for supplying a same display signal to said signal electrodes twice when the first potential is applied to the scanning electrode selected by said selecting means, and when the second potential is applied to the selected scanning electrode.
Claim 22
Independent Claim
127 words
A system for driving a liquid-crystal display-panel device having scanning electrodes and signal electrodes to which scanning signals and display signals are supplied, respectively, the system comprising: selecting means for selecting one of said scanning electrodes successively; scanning-signal supplying means for applying a first potential to the scanning electrode and thereafter applying at least a second potential thereto such that a potential difference applied between said selected scanning electrode and said signal electrodes substantially changes while said scanning electrode is selected by said selecting means; and display-signal supplying means for supplying a same display signal to said signal electrodes twice when the first potential is applied to the scanning electrode selected by said selecting means, and when the second potential is applied to the selected scanning electrode.
Claim 23
Dependent Claim
54 words
The system according to claim 14, wherein said display signal is pulse-width modulated and said signal electrodes are supplied with the same pulse-width modulated display signal twice at a time when the first potential is applied to said scanning electrode and at a time when the second potential is applied to said scanning electrode.
Claim 24
Dependent Claim
50 words
The system according to claim 14, wherein said scanning-signal supplying means applies the second potential to the scanning electrode after applying the first potential thereto such that a potential difference applied between said scanning electrode and said signal electrodes decreases while said scanning electrode is selected by said selecting means.
Claim 25
Dependent Claim
28 words
The system according to claim 14, wherein said scanning signal is inverted at a predetermined interval while said display signal is inverted in synchronism with said scanning signal.
Claim 26
Independent Claim
91 words
A system for driving a liquid-crystal display-panel device having scanning electrodes and signal electrodes to which scanning signals and display signals are supplied, respectively, the system comprising: selecting means for selecting one of said scanning electrodes successively; and display-signal supplying means for supplying, separately and several times, but with an equivalent effective voltage in total, said signal electrodes with display signals corresponding to the scanning electrode while said scanning electrode is selected by said selecting means, and for increasing the response rate of liquid crystals of the liquid-crystal display panel device.
Claim 27
Independent Claim
91 words
A system for driving a liquid-crystal display-panel device having scanning electrodes and signal electrodes to which scanning signals and display signals are supplied, respectively, the system comprising: selecting means for selecting one of said scanning electrodes successively; and display-signal supplying means for supplying, separately and several times, but with an equivalent effective voltage in total, said signal electrodes with display signals corresponding to the scanning electrode while said scanning electrode is selected by said selecting means, and for increasing the response rate of liquid crystals of the liquid-crystal display panel device.
Claim 28
Dependent Claim
65 words
The system according to claim 18, wherein said display-signal supplying means applies the display signal to the signal electrodes at least twice so that at first a potential difference of a high level is applied between the scanning electrode and said signal electrodes and then a potential difference of a low level is applied therebetween while said scanning electrode is selected by said selecting means.
Claim 29
Dependent Claim
69 words
The system according to claim 19, wherein said display signal supplied from said display-signal supplying means is pulse-width modulated and the pulse-width modulated signal is separately supplied at least twice to said signal electrodes, and wherein a potential difference between a mean value of the pulse-width modulated signal and the scanning signal applied to the selected scanning electrode is large at first and then the potential difference is small.
Claim 30
Dependent Claim
28 words
The system according to claim 18, wherein said scanning signal is inverted at a predetermined interval while said display signal is inverted in synchronism with said scanning signal.
Claim 31
Independent Claim
109 words
A system for driving a liquid-crystal display-panel device having scanning electrodes and signal electrodes to which scanning signals and display signals are supplied, respectively, the system comprising: selecting means for selecting one of said scanning electrodes successively; scanning-signal supplying means for applying at least a second potential to the scanning electrode selected by said selecting means after applying a first potential thereto; and display-signal supplying means for supplying a display signal of a different level at least twice, but with an equivalent effective voltage in total, to said signal electrodes while a scanning electrode is selected by said selecting means, said display signal corresponding to the selected scanning electrode.
Claim 32
Independent Claim
109 words
A system for driving a liquid-crystal display-panel device having scanning electrodes and signal electrodes to which scanning signals and display signals are supplied, respectively, the system comprising: selecting means for selecting one of said scanning electrodes successively; scanning-signal supplying means for applying at least a second potential to the scanning electrode selected by said selecting means after applying a first potential thereto; and display-signal supplying means for supplying a display signal of a different level at least twice, but with an equivalent effective voltage in total, to said signal electrodes while a scanning electrode is selected by said selecting means, said display signal corresponding to the selected scanning electrode.
Claim 33
Dependent Claim
69 words
The system according to claim 22, wherein said display signal supplied from said display-signal supplying means is pulse-width modulated and the pulse-width modulated signal is separately supplied at least twice to said signal electrodes, and wherein a potential difference between a mean value of the pulse-width modulated signal and the scanning signal applied to the selected scanning electrode is large at first and then the potential difference is small.
Claim 34
Dependent Claim
28 words
The system according to claim 22, wherein said scanning signal is inverted at a predetermined interval while said display signal is inverted in synchronism with said scanning signal.
Claim 35
Dependent Claim
148 words
In a liquid-crystal display-panel device having scanning electrodes and signal electrodes a scanning electrode being successively selected from said scanning electrodes by a selecting means, a scanning signal being supplied to the selected scanning electrode, a display signal corresponding to the selected scanning electrode being supplied to the signal electrodes, and wherein liquid crystals are driven by an effective value of voltage applied between the selected scanning electrode and the signal electrodes, a system for driving the liquid crystals comprising: means for applying between the scanning electrode selected by the selecting means and said signal electrodes a voltage higher than a given voltage level based on the display signal at first and then applying therebetween a voltage lower than the given voltage level, so that a voltage whose effective value is substantially equivalent to the given voltage is applied between the selected scanning electrode and said signal electrodes.
Claim 36
Dependent Claim
148 words
In a liquid-crystal display-panel device having scanning electrodes and signal electrodes a scanning electrode being successively selected from said scanning electrodes by a selecting means, a scanning signal being supplied to the selected scanning electrode, a display signal corresponding to the selected scanning electrode being supplied to the signal electrodes, and wherein liquid crystals are driven by an effective value of voltage applied between the selected scanning electrode and the signal electrodes, a system for driving the liquid crystals comprising: means for applying between the scanning electrode selected by the selecting means and said signal electrodes a voltage higher than a given voltage level based on the display signal at first and then applying therebetween a voltage lower than the given voltage level, so that a voltage whose effective value is substantially equivalent to the given voltage is applied between the selected scanning electrode and said signal electrodes.
Claim 37
Dependent Claim
17 words
The system for driving the liquid-crystals according to claim 25, wherein said display signal is pulse-width modulated.
Claim 38
Dependent Claim
32 words
The system for driving the liquid-crystals according to claim 25, wherein said scanning signal is inverted at a predetermined interval while said display signal is inverted in synchronism with said scanning signal.
Claim 39
Dependent Claim
155 words
In a liquid-crystal display-panel device having scanning electrodes and signal electrodes, a scanning electrode being successively selected from said scanning electrodes by a selecting means, a scanning signal being supplied to the selected scanning electrode, a display signal corresponding to the selected scanning electrode being supplied to the signal electrodes, and wherein liquid crystals are driven by an effective value of voltage applied between the selected scanning electrode and the signal electrodes, a method of driving the liquid crystals comprising the steps of: a. dividing a period during which a scanning electrode is selected by said selecting means, into a plurality of period; and b. applying between said scanning electrode selected by said selecting means and said signal electrodes a voltage difference which is different in each of the plurality of periods and an effective value of which is substantially equivalent to an effective value of a given voltage difference based on the display signal.
Claim 40
Dependent Claim
155 words
In a liquid-crystal display-panel device having scanning electrodes and signal electrodes, a scanning electrode being successively selected from said scanning electrodes by a selecting means, a scanning signal being supplied to the selected scanning electrode, a display signal corresponding to the selected scanning electrode being supplied to the signal electrodes, and wherein liquid crystals are driven by an effective value of voltage applied between the selected scanning electrode and the signal electrodes, a method of driving the liquid crystals comprising the steps of: a. dividing a period during which a scanning electrode is selected by said selecting means, into a plurality of period; and b. applying between said scanning electrode selected by said selecting means and said signal electrodes a voltage difference which is different in each of the plurality of periods and an effective value of which is substantially equivalent to an effective value of a given voltage difference based on the display signal.
Claim 41
Dependent Claim
169 words
In a liquid-crystal display-panel device having scanning electrodes and signal electrodes, a scanning electrode being successively selected from said scanning electrodes by a selecting means, a scanning signal being supplied to the selected scanning electrode, a display signal corresponding to the selected scanning electrode being supplied to the signal electrodes, and wherein liquid crystals are driven by an effective value of voltage applied between the selected scanning electrode and the signal electrodes, a method of driving the liquid crystals comprising the steps of: a. dividing a period, during which a scanning electrode is selected by said selecting means, into a plurality of periods; and b. applying the scanning signal to said scanning electrodes and applying the display signal to said signal electrodes, so that a voltage difference which is different in each of the plurality of periods, and an effective value of which is substantially equivalent to an effective value of a given voltage is applied between the scanning electrode selected by said selecting means and said signal electrode.
Claim 42
Dependent Claim
169 words
In a liquid-crystal display-panel device having scanning electrodes and signal electrodes, a scanning electrode being successively selected from said scanning electrodes by a selecting means, a scanning signal being supplied to the selected scanning electrode, a display signal corresponding to the selected scanning electrode being supplied to the signal electrodes, and wherein liquid crystals are driven by an effective value of voltage applied between the selected scanning electrode and the signal electrodes, a method of driving the liquid crystals comprising the steps of: a. dividing a period, during which a scanning electrode is selected by said selecting means, into a plurality of periods; and b. applying the scanning signal to said scanning electrodes and applying the display signal to said signal electrodes, so that a voltage difference which is different in each of the plurality of periods, and an effective value of which is substantially equivalent to an effective value of a given voltage is applied between the scanning electrode selected by said selecting means and said signal electrode.
Claim 43
Dependent Claim
119 words
A liquid-crystal display apparatus, comprising: liquid-crystal display panel means including scanning electrodes and signal electrodes, both of which are disposed in a matrix arrangement; display control means for dividing a selection period during which said scanning electrodes are to be driven into m divided periods wherein m is a positive integer, and for repeatedly displaying a picture based on common video data for m times; and scanning-electrode driving means for driving said scanning electrodes with a plurality of voltage values each corresponding to each of m divided periods divided by said display control means so that a different voltage difference of the same polarity is applied between said scanning electrodes and said signal electrodes in each respective divided period.
Claim 44
Dependent Claim
119 words
A liquid-crystal display apparatus, comprising: liquid-crystal display panel means including scanning electrodes and signal electrodes, both of which are disposed in a matrix arrangement; display control means for dividing a selection period during which said scanning electrodes are to be driven into m divided periods wherein m is a positive integer, and for repeatedly displaying a picture based on common video data for m times; and scanning-electrode driving means for driving said scanning electrodes with a plurality of voltage values each corresponding to each of m divided periods divided by said display control means so that a different voltage difference of the same polarity is applied between said scanning electrodes and said signal electrodes in each respective divided period.
Claim 45
Dependent Claim
121 words
A liquid-crystal display apparatus, comprising: liquid crystal display means including scanning electrodes and signal electrodes, both of which are disposed in a matrix arrangement; display control means for dividing respective display periods during which said signal electrodes are to be driven into m divided periods wherein m is a positive integer, and for repeatedly displaying a picture based on common video data for m times; and signal-electrodes driving means for driving said signal electrodes with a plurality of voltage values each corresponding to each of m divided periods by said display control means so that a different voltage difference of the same polarity is applied between said scanning electrodes and said signal electrodes in each respective one of said divided periods.
Claim 46
Dependent Claim
121 words
A liquid-crystal display apparatus, comprising: liquid crystal display means including scanning electrodes and signal electrodes, both of which are disposed in a matrix arrangement; display control means for dividing respective display periods during which said signal electrodes are to be driven into m divided periods wherein m is a positive integer, and for repeatedly displaying a picture based on common video data for m times; and signal-electrodes driving means for driving said signal electrodes with a plurality of voltage values each corresponding to each of m divided periods by said display control means so that a different voltage difference of the same polarity is applied between said scanning electrodes and said signal electrodes in each respective one of said divided periods.
Claim 47
Dependent Claim
122 words
A liquid-crystal display apparatus, comprising: liquid-crystal display panel means including scanning electrodes and signal electrodes, both of which are disposed in a matrix arrangement; display control means for divided a selection period during which said scanning electrodes are to be driven into a divided periods wherein m is a positive integer, and for repeatedly displaying a picture based on common video data for m times; and electrodes driving means for driving said signal electrodes and said scanning electrodes with voltages each having a value corresponding to one of the divided periods divided by said display control means so that a different voltage difference of the same polarity is applied between said scanning electrodes and said signal electrodes in the respective divided periods.
Claim 48
Dependent Claim
122 words
A liquid-crystal display apparatus, comprising: liquid-crystal display panel means including scanning electrodes and signal electrodes, both of which are disposed in a matrix arrangement; display control means for divided a selection period during which said scanning electrodes are to be driven into a divided periods wherein m is a positive integer, and for repeatedly displaying a picture based on common video data for m times; and electrodes driving means for driving said signal electrodes and said scanning electrodes with voltages each having a value corresponding to one of the divided periods divided by said display control means so that a different voltage difference of the same polarity is applied between said scanning electrodes and said signal electrodes in the respective divided periods.
Claim 49
Dependent Claim
157 words
A liquid-crystal display apparatus having liquid crystals applicable with a predetermined driving voltage applied during a frame period involving a predetermined number of display periods, comprising: liquid-crystal display panel means including scanning electrodes and signal electrodes, both of which are diagnosed in a matrix arrangement; signal electrode driving means for dividing said respective display periods during which said signal electrodes are to be driven into two divided periods, and driving said signal electrodes twice during each of the display periods, wherein a voltage of V11 is applied to said signal electrodes during the first divided period and a voltage of V12 is applied to said signal electrodes during the second divided period, and these voltages are defined by the following equation: 2V1.sup.2 =V11.sup.2 +V12.sup.2 where V1 stands for said predetermined driving voltage, and wherein an effective voltage applied to said signal electrodes during the frame period is equivalent to the effective value of said predetermined driving voltage.
Claim 50
Dependent Claim
157 words
A liquid-crystal display apparatus having liquid crystals applicable with a predetermined driving voltage applied during a frame period involving a predetermined number of display periods, comprising: liquid-crystal display panel means including scanning electrodes and signal electrodes, both of which are diagnosed in a matrix arrangement; signal electrode driving means for dividing said respective display periods during which said signal electrodes are to be driven into two divided periods, and driving said signal electrodes twice during each of the display periods, wherein a voltage of V11 is applied to said signal electrodes during the first divided period and a voltage of V12 is applied to said signal electrodes during the second divided period, and these voltages are defined by the following equation: 2V1.sup.2 =V11.sup.2 +V12.sup.2 where V1 stands for said predetermined driving voltage, and wherein an effective voltage applied to said signal electrodes during the frame period is equivalent to the effective value of said predetermined driving voltage.
Claim 51
Dependent Claim
19 words
A liquid-crystal display apparatus according to claim 33, wherein the voltages V11 and V12 are different from each other.
Claim 52
Dependent Claim
18 words
A liquid-crystal display apparatus according to claim 34, wherein the voltage V11 is higher than the voltage V12.
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