US5682177A
Expired / Lapsed
US
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Driving method of driving a liquid crystal display element
Assignee: Kyocera Display Corp
•
Filing: 1995-06-07
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Granted: 1997-10-28
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Expires: 2015-06-07
Abstract
Abstract A driving method of a matrix type liquid crystal display element including at least J×L (J and L are respectively integers of 2 or more) row electrodes and a plural number of column electrodes wherein the J×L row electrodes are divided into J row electrode subgroups each including n row electrodes so that the subgroups are selected as each batch to be driven. When voltages are applied to the row electrodes, either a voltage level of +V r or -V r (where V r >0) is applied at a selection time, when a voltage at a non-selection time is 0 (zero). Voltages applied to the column electrodes are selected from (L+1) voltage levels of V 0 , V 1 , . . . , V L (where V 0 <V 1 . . . <V L ), and when a two-valued information of the j-th line electrode subgroup (j is an integer of any of 1 through J) in a specified column in the plural column electrodes is expressed by a column vector D j having L elements (where the elements of the vector D j include 1 indicating ON and 0 indicating OFF), specific conditions must be satisfied.
Inventors
- 👤 Takeshi Kuwata
- 👤 Temkar Ruckmongathan
- 👤 Yutaka Nakagawa
- 👤 Hidemasa Koh
- 👤 Hiroshi Hasebe
- 👤 Takashi Yamashita
- 👤 Hideyuki Nagano
- 👤 Takanori Ohnishi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:44
CPC Classifications
G; G09; G09G; G09G3/00; G09G3/20; G09G3/34; G09G3/36; G09G3/3611; G09G3/3622; G09G3/3625; G01; G01N; G01N35/00; G01N35/02; G01N35/026
Claims Analysis
Total Claims: 52
Claim 1
Independent Claim
620 words
A driving method of a liquid crystal display having a plurality of scanning electrodes and a plurality of data electrodes, said method comprising the steps of: (a) dividing said plurality of scanning electrodes into a plurality of scanning electrode subgroups, each scanning electrode subgroup comprising a plurality of scanning electrodes; (b) determining if said each scanning electrode subgroup includes a same number of electrodes and, if not, appending a suitable number of dummy electrodes to the scanning electrode subgroups so that said each scanning electrode subgroup includes the same number of electrodes; (c) generating a plurality of selection matrices, and for each scanning electrode subgroup, providing a respective one of the plurality of selection matrices, each selection matrix having substantial orthogonality, wherein (c1) each row vector of each selection matrix has a one-to-one correspondence with a specified scanning electrode which belongs to the respective scanning electrode subgroup; (c2) each element of a column vector of each selection matrix corresponds to a height of a pulse applied on each scanning electrode which belongs to the respective scanning electrode subgroup when the respective scanning electrode subgroup is selected; and (c3) each selection matrix corresponding to each respective scanning electrode subgroup is generated by replacing column vectors of a section matrix corresponding to one of the other scanning electrode subgroups; (d) for each scanning electrode subgroup, dividing said selection matrix into a plurality of groups of column vectors, wherein a number of column vectors included in each group is less than a total number of column vector of the selection matrix, and the plurality of groups of column vectors are arranged in a time sequential order; and (e) scanning the scanning electrodes by (e1) applying selection pulses on scanning electrodes of a first selected scanning electrode subgroup so that the first selected scanning electrode subgroup is selected as a batch, wherein the selection pulses correspond to each column vector which belongs to one of the plurality of groups of column vectors of the respective selection matrix for the respective first selected scanning electrode subgroup, and applying a relative zero voltage on scanning electrodes of each non-selected scanning electrode subgroup; (e2) applying selection pulses on scanning electrodes of a next selected scanning electrode subgroup so that the next selected scanning electrode subgroup is selected as a batch, wherein the selection pulses correspond to each column vector which belongs to one of the plurality of groups of column vectors of the respective selection matrix for the respective next selected scanning electrode subgroup, and applying a relative zero voltage on scanning electrodes of each non-selected scanning electrode subgroup; (e3) repeating step (e2) for each scanning electrode subgroup; (e4) applying selection pulses on scanning electrodes of the first selected scanning electrode subgroup so that the first selected scanning electrode subgroup is selected as a batch, wherein the selection pulses correspond to each column vector which belongs to a next of the plurality of groups of column vectors of the respective selection matrix for the respective first selected scanning electrode subgroup, and applying a relative zero voltage on scanning electrodes of each non-selected scanning electrode subgroup; (e5) applying selection pulses on scanning electrodes of the next selected scanning electrode subgroup so that the next selected scanning electrode subgroup is selected as a batch, wherein the selection pulses correspond to each column vector which belongs to a next of the plurality of groups column vectors of the respective selection matrix for the respective next selected scanning electrode subgroup, and applying a relative zero voltage on scanning electrodes of each non-selected scanning electrode subgroup; (e6) repeating step (e5) for each scanning electrode subgroup; and (e7) repeating steps (e4), (e5) and (e6) for each one of the groups of column vectors.
Claim 2
Dependent Claim
620 words
A driving method of a liquid crystal display having a plurality of scanning electrodes and a plurality of data electrodes, said method comprising the steps of: (a) dividing said plurality of scanning electrodes into a plurality of scanning electrode subgroups, each scanning electrode subgroup comprising a plurality of scanning electrodes; (b) determining if said each scanning electrode subgroup includes a same number of electrodes and, if not, appending a suitable number of dummy electrodes to the scanning electrode subgroups so that said each scanning electrode subgroup includes the same number of electrodes; (c) generating a plurality of selection matrices, and for each scanning electrode subgroup, providing a respective one of the plurality of selection matrices, each selection matrix having substantial orthogonality, wherein (c1) each row vector of each selection matrix has a one-to-one correspondence with a specified scanning electrode which belongs to the respective scanning electrode subgroup; (c2) each element of a column vector of each selection matrix corresponds to a height of a pulse applied on each scanning electrode which belongs to the respective scanning electrode subgroup when the respective scanning electrode subgroup is selected; and (c3) each selection matrix corresponding to each respective scanning electrode subgroup is generated by replacing column vectors of a section matrix corresponding to one of the other scanning electrode subgroups; (d) for each scanning electrode subgroup, dividing said selection matrix into a plurality of groups of column vectors, wherein a number of column vectors included in each group is less than a total number of column vector of the selection matrix, and the plurality of groups of column vectors are arranged in a time sequential order; and (e) scanning the scanning electrodes by (e1) applying selection pulses on scanning electrodes of a first selected scanning electrode subgroup so that the first selected scanning electrode subgroup is selected as a batch, wherein the selection pulses correspond to each column vector which belongs to one of the plurality of groups of column vectors of the respective selection matrix for the respective first selected scanning electrode subgroup, and applying a relative zero voltage on scanning electrodes of each non-selected scanning electrode subgroup; (e2) applying selection pulses on scanning electrodes of a next selected scanning electrode subgroup so that the next selected scanning electrode subgroup is selected as a batch, wherein the selection pulses correspond to each column vector which belongs to one of the plurality of groups of column vectors of the respective selection matrix for the respective next selected scanning electrode subgroup, and applying a relative zero voltage on scanning electrodes of each non-selected scanning electrode subgroup; (e3) repeating step (e2) for each scanning electrode subgroup; (e4) applying selection pulses on scanning electrodes of the first selected scanning electrode subgroup so that the first selected scanning electrode subgroup is selected as a batch, wherein the selection pulses correspond to each column vector which belongs to a next of the plurality of groups of column vectors of the respective selection matrix for the respective first selected scanning electrode subgroup, and applying a relative zero voltage on scanning electrodes of each non-selected scanning electrode subgroup; (e5) applying selection pulses on scanning electrodes of the next selected scanning electrode subgroup so that the next selected scanning electrode subgroup is selected as a batch, wherein the selection pulses correspond to each column vector which belongs to a next of the plurality of groups column vectors of the respective selection matrix for the respective next selected scanning electrode subgroup, and applying a relative zero voltage on scanning electrodes of each non-selected scanning electrode subgroup; (e6) repeating step (e5) for each scanning electrode subgroup; and (e7) repeating steps (e4), (e5) and (e6) for each one of the groups of column vectors.
Claim 3
Dependent Claim
63 words
The driving method according to claim 1, wherein the respective selection matrix corresponding to each respective scanning electrode subgroup is generated by shifting by one the groups of column vectors of a respective selection matrix corresponding to the respective scanning electrode subgroup which receives selection pulses before an n th pulse, wherein n is a natural number, to the respective scanning electrode subgroup.
Claim 4
Dependent Claim
11 words
The driving method according to claim 2, wherein n is 1.
Claim 5
Dependent Claim
11 words
The driving method according to claim 2, wherein n is 2.
Claim 6
Dependent Claim
33 words
A driving method of a liquid crystal display element according to claim 1, wherein the number of column vectors included in each group of column vectors is equal to or greater than 1.
Claim 7
Dependent Claim
25 words
A driving method of a liquid crystal display element according to claim 1, wherein the number of scanning electrodes selected as a batch is 7.
Claim 8
Dependent Claim
25 words
A driving method of a liquid crystal display element according to claim 1, wherein the number of scanning electrodes selected as a batch is 4.
Claim 9
Dependent Claim
30 words
A driving method of a liquid crystal display element according to claim 1, wherein an average response time of the liquid crystal display element is 100 m sec or lower.
Claim 10
Dependent Claim
25 words
A driving method of a liquid crystal display element according to claim 1, wherein the liquid crystal display element includes a difluorostilbene type liquid crystal.
Claim 11
Dependent Claim
25 words
A driving method of a liquid crystal display element according to claim 1, wherein the liquid crystal display element includes a tolan type liquid crystal.
Claim 12
Dependent Claim
25 words
A driving method of a liquid crystal display element according to claim 1, wherein the liquid crystal display element is of a supertwisted nematic type.
Claim 13
Dependent Claim
31 words
A driving method of a liquid crystal display element according to claim 1, wherein in each selection matrix a frequency of a selection pulse is uniformly applied to the scanning electrodes.
Claim 14
Dependent Claim
69 words
A driving method of a liquid crystal display element according to claim 1, further comprising a step that a voltage to be applied to the column electrodes is selected from voltage levels which are previously determined so as to correspond to a sum which is obtained by adding outputs from an exclusive OR gate for comparing logic levels corresponding to scanning electrode voltages with logic levels corresponding to data.
Claim 15
Dependent Claim
37 words
A driving method of a liquid crystal display element according to claim 13, further comprising a step that a gray shade is effected by displaying a plural number of ON and OFF signs at a specified ratio.
Claim 16
Dependent Claim
536 words
A driving method of a liquid crystal display having a plurality of scanning electrodes and a plurality of data electrodes, said method comprising the steps of: (a) dividing said plurality of scanning electrodes into a plurality of scanning electrode subgroups, each scanning electrode subgroup comprising a plurality of scanning electrodes; (b) determining if said each scanning electrode subgroup includes a same number of electrodes and, if not, appending a suitable number of dummy electrodes to the scanning electrode subgroups so that said each scanning electrode subgroup includes the same number of electrodes; (c) generating a plurality of selection matrices, and for each scanning electrode subgroup, providing a respective one of the plurality of selection matrices, each selection matrix having substantial orthogonality, wherein (c1) each row vector of each selection matrix has a one-to-one correspondence with a specified scanning electrode which belongs to the respective scanning electrode subgroup; (c2) each element of a column vector of each selection matrix corresponds to a height of a pulse applied on each scanning electrode which belongs to the respective scanning electrode subgroup when the respective scanning electrode subgroup is selected; and (c3) each selection matrix corresponding to each respective scanning electrode subgroup is generated by replacing column vectors of a selection matrix corresponding to one of the other scanning electrode subgroups; (d) for each scanning electrode subgroup, dividing said selection matrix into a plurality of column vectors arranged in a time sequential order; (e) scanning the scanning electrodes by (e1) applying selection pulses on scanning electrodes of a first selected scanning electrode subgroup so that the first selected scanning electrode subgroup is selected as a batch, wherein the selection pulses correspond to a column vector of the respective selection matrix for the respective first selected scanning electrode subgroup, and applying a relative zero voltage on scanning electrodes of each non-selected scanning electrode subgroup; (e2) applying selection pulses on scanning electrodes of a next selected scanning electrode subgroup so that the next selected scanning electrode subgroup is selected as a batch, wherein the selection pulses correspond to a column vector of the respective selection matrix for the respective next selected scanning electrode subgroup, and applying a relative zero voltage on scanning electrodes of each non-selected scanning electrode subgroup; (e3) repeating step (e2) for each scanning electrode subgroup; (e4) applying selection pulses on scanning electrodes of the first selected scanning electrode subgroup so that the first selected scanning electrode subgroup is selected as a batch, wherein the selection pulses correspond to a next column vector of the respective selection matrix for the respective first selected scanning electrode subgroup, and applying a relative zero voltage on scanning electrodes of each non-selected scanning electrode subgroup; (e5) applying selection pulses on scanning electrodes of the next selected scanning electrode subgroup so that the next selected scanning electrode subgroup is selected as a batch, wherein the selection pulses correspond to a next column vector of the respective selection matrix for the respective next selected scanning electrode subgroup, and applying a relative zero voltage on scanning electrodes of each non-selected scanning electrode subgroup; (e6) repeating step (e5) for each scanning electrode subgroup; and (e7) repeating steps (e4), (e5) and (e6) for each one of the column vectors.
Claim 17
Dependent Claim
536 words
A driving method of a liquid crystal display having a plurality of scanning electrodes and a plurality of data electrodes, said method comprising the steps of: (a) dividing said plurality of scanning electrodes into a plurality of scanning electrode subgroups, each scanning electrode subgroup comprising a plurality of scanning electrodes; (b) determining if said each scanning electrode subgroup includes a same number of electrodes and, if not, appending a suitable number of dummy electrodes to the scanning electrode subgroups so that said each scanning electrode subgroup includes the same number of electrodes; (c) generating a plurality of selection matrices, and for each scanning electrode subgroup, providing a respective one of the plurality of selection matrices, each selection matrix having substantial orthogonality, wherein (c1) each row vector of each selection matrix has a one-to-one correspondence with a specified scanning electrode which belongs to the respective scanning electrode subgroup; (c2) each element of a column vector of each selection matrix corresponds to a height of a pulse applied on each scanning electrode which belongs to the respective scanning electrode subgroup when the respective scanning electrode subgroup is selected; and (c3) each selection matrix corresponding to each respective scanning electrode subgroup is generated by replacing column vectors of a selection matrix corresponding to one of the other scanning electrode subgroups; (d) for each scanning electrode subgroup, dividing said selection matrix into a plurality of column vectors arranged in a time sequential order; (e) scanning the scanning electrodes by (e1) applying selection pulses on scanning electrodes of a first selected scanning electrode subgroup so that the first selected scanning electrode subgroup is selected as a batch, wherein the selection pulses correspond to a column vector of the respective selection matrix for the respective first selected scanning electrode subgroup, and applying a relative zero voltage on scanning electrodes of each non-selected scanning electrode subgroup; (e2) applying selection pulses on scanning electrodes of a next selected scanning electrode subgroup so that the next selected scanning electrode subgroup is selected as a batch, wherein the selection pulses correspond to a column vector of the respective selection matrix for the respective next selected scanning electrode subgroup, and applying a relative zero voltage on scanning electrodes of each non-selected scanning electrode subgroup; (e3) repeating step (e2) for each scanning electrode subgroup; (e4) applying selection pulses on scanning electrodes of the first selected scanning electrode subgroup so that the first selected scanning electrode subgroup is selected as a batch, wherein the selection pulses correspond to a next column vector of the respective selection matrix for the respective first selected scanning electrode subgroup, and applying a relative zero voltage on scanning electrodes of each non-selected scanning electrode subgroup; (e5) applying selection pulses on scanning electrodes of the next selected scanning electrode subgroup so that the next selected scanning electrode subgroup is selected as a batch, wherein the selection pulses correspond to a next column vector of the respective selection matrix for the respective next selected scanning electrode subgroup, and applying a relative zero voltage on scanning electrodes of each non-selected scanning electrode subgroup; (e6) repeating step (e5) for each scanning electrode subgroup; and (e7) repeating steps (e4), (e5) and (e6) for each one of the column vectors.
Claim 18
Dependent Claim
61 words
The driving method according to claim 15, wherein the respective selection matrix corresponding to each respective scanning electrode subgroup is generated by shifting by one the column vectors of the respective selection matrix corresponding to the respective scanning electrode subgroup which receives selection pulses before an n th pulse, wherein n is a natural number, to the respective scanning electrode subgroup.
Claim 19
Dependent Claim
11 words
The driving method according to claim 16, wherein n is 1.
Claim 20
Dependent Claim
11 words
The driving method according to claim 16, wherein n is 2.
Claim 21
Dependent Claim
25 words
A driving method of a liquid crystal display element according to claim 15, wherein the number of scanning electrodes selected as a batch is 7.
Claim 22
Dependent Claim
25 words
A driving method of a liquid crystal display element according to claim 15, wherein the number of scanning electrodes selected as a batch is 4.
Claim 23
Dependent Claim
30 words
A driving method of a liquid crystal display element according to claim 15, wherein an average response time of the liquid crystal display element is 100 m sec or lower.
Claim 24
Dependent Claim
25 words
A driving method of a liquid crystal display element according to claim 15, wherein the liquid crystal display element includes a difluorostilbene type liquid crystal.
Claim 25
Dependent Claim
25 words
A driving method of a liquid crystal display element according to claim 15, wherein the liquid crystal display element includes a tolan type liquid crystal.
Claim 26
Dependent Claim
25 words
A driving method of a liquid crystal display element according to claim 15, wherein the liquid crystal display element is of a supertwisted nematic type.
Claim 27
Dependent Claim
31 words
A driving method of a liquid crystal display element according to claim 15, wherein in each selection matrix a frequency of a selection pulse is uniformly applied to the scanning electrodes.
Claim 28
Dependent Claim
69 words
A driving method of a liquid crystal display element according to claim 15, further comprising a step that a voltage to be applied to the column electrodes is selected from voltage levels which are previously determined so as to correspond to a sum which is obtained by adding outputs from an exclusive OR gate for comparing logic levels corresponding to scanning electrode voltages with logic levels corresponding to data.
Claim 29
Dependent Claim
37 words
A driving method of a liquid crystal display element according to claim 26, further comprising a step that a gray shade is effected by displaying a plural number of ON and OFF signs at a specified ratio.
Claim 30
Dependent Claim
588 words
A driving method of a liquid crystal display having a plurality of scanning electrodes and a plurality of data electrodes, said method comprising the steps of: (a) dividing said plurality of scanning electrodes into a plurality of scanning electrode subgroups, each scanning electrode subgroup comprising a plurality of scanning electrodes; (b) determining if said each scanning electrode subgroup includes a same number of electrodes and, if not, appending a suitable number of dummy electrodes to the scanning electrode subgroups so that said each scanning electrode subgroup includes the same number of electrodes; (c) generating a selection matrix, including a plurality of groups of column vectors, wherein a number of column vectors included in each of the plurality of groups is less than a total number of column vectors of the selection matrix, and the plurality of groups of column vectors are arranged in a time sequential order, and for each scanning electrode subgroup, providing the selection matrix, the selection matrix having substantial orthogonality, wherein (c1) each row vector of the selection matrix has a one-to-one correspondence with a specified scanning electrode which belongs to the scanning electrode subgroup; (c2) each element of a column vector of the selection matrix corresponds to a height of a pulse applied on each scanning electrode which belongs to the scanning electrode subgroup when the scanning electrode subgroup is selected; and (d) scanning the scanning electrodes by (d1) applying selection pulses on scanning electrodes of a first selected scanning electrode subgroup so that the first selected scanning electrode subgroup is selected as a batch, wherein the selection pulses correspond to each column vector which belongs to one of the plurality of groups of column vectors of the selection matrix, and applying a relative zero voltage on scanning electrodes of each non-selected scanning electrode subgroup; (d2) applying selection pulses on scanning electrodes of a next selected scanning electrode subgroup so that the next selected scanning electrode subgroup is selected as a batch, wherein the selection pulses correspond to each column vector which belongs to one of the plurality of groups of column vectors of the selection matrix, and applying a relative zero voltage on scanning electrodes of each non-selected scanning electrode subgroup; (d3) repeating step (d2) for each scanning electrode subgroup, wherein groups of column vectors used in steps (d1) to (d3) are different from each other in at least two scanning electrode subgroups; (d4) applying selection pulses on scanning electrodes of the first selected scanning electrode subgroup so that the first selected scanning electrode subgroup is selected as a batch, wherein the selection pulses correspond to each column vector which belongs to a next one of the plurality of groups of column vectors of the selection matrix, and applying a relative zero voltage on scanning electrodes of each non-selected scanning electrode subgroup; (d5) applying selection pulses on scanning electrodes of the next selected scanning electrode subgroup so that the next selected scanning electrode subgroup is selected as a batch, wherein the selection pulses correspond to each column vector which belongs to a next one of the plurality of groups of column vectors of the selection matrix, and applying a relative zero voltage on scanning electrodes of each non-selected scanning electrode subgroup; (d6) repeating step (d5) for each scanning electrode subgroup, wherein groups of column vectors used in steps (d4) to (d6) are different from each other in at least two scanning electrode subgroups; and (d7) repeating steps (d4), (d5) and (d6) for each one of the groups column vectors of the selection matrix.
Claim 31
Dependent Claim
588 words
A driving method of a liquid crystal display having a plurality of scanning electrodes and a plurality of data electrodes, said method comprising the steps of: (a) dividing said plurality of scanning electrodes into a plurality of scanning electrode subgroups, each scanning electrode subgroup comprising a plurality of scanning electrodes; (b) determining if said each scanning electrode subgroup includes a same number of electrodes and, if not, appending a suitable number of dummy electrodes to the scanning electrode subgroups so that said each scanning electrode subgroup includes the same number of electrodes; (c) generating a selection matrix, including a plurality of groups of column vectors, wherein a number of column vectors included in each of the plurality of groups is less than a total number of column vectors of the selection matrix, and the plurality of groups of column vectors are arranged in a time sequential order, and for each scanning electrode subgroup, providing the selection matrix, the selection matrix having substantial orthogonality, wherein (c1) each row vector of the selection matrix has a one-to-one correspondence with a specified scanning electrode which belongs to the scanning electrode subgroup; (c2) each element of a column vector of the selection matrix corresponds to a height of a pulse applied on each scanning electrode which belongs to the scanning electrode subgroup when the scanning electrode subgroup is selected; and (d) scanning the scanning electrodes by (d1) applying selection pulses on scanning electrodes of a first selected scanning electrode subgroup so that the first selected scanning electrode subgroup is selected as a batch, wherein the selection pulses correspond to each column vector which belongs to one of the plurality of groups of column vectors of the selection matrix, and applying a relative zero voltage on scanning electrodes of each non-selected scanning electrode subgroup; (d2) applying selection pulses on scanning electrodes of a next selected scanning electrode subgroup so that the next selected scanning electrode subgroup is selected as a batch, wherein the selection pulses correspond to each column vector which belongs to one of the plurality of groups of column vectors of the selection matrix, and applying a relative zero voltage on scanning electrodes of each non-selected scanning electrode subgroup; (d3) repeating step (d2) for each scanning electrode subgroup, wherein groups of column vectors used in steps (d1) to (d3) are different from each other in at least two scanning electrode subgroups; (d4) applying selection pulses on scanning electrodes of the first selected scanning electrode subgroup so that the first selected scanning electrode subgroup is selected as a batch, wherein the selection pulses correspond to each column vector which belongs to a next one of the plurality of groups of column vectors of the selection matrix, and applying a relative zero voltage on scanning electrodes of each non-selected scanning electrode subgroup; (d5) applying selection pulses on scanning electrodes of the next selected scanning electrode subgroup so that the next selected scanning electrode subgroup is selected as a batch, wherein the selection pulses correspond to each column vector which belongs to a next one of the plurality of groups of column vectors of the selection matrix, and applying a relative zero voltage on scanning electrodes of each non-selected scanning electrode subgroup; (d6) repeating step (d5) for each scanning electrode subgroup, wherein groups of column vectors used in steps (d4) to (d6) are different from each other in at least two scanning electrode subgroups; and (d7) repeating steps (d4), (d5) and (d6) for each one of the groups column vectors of the selection matrix.
Claim 32
Dependent Claim
32 words
A driving method of a liquid crystal display element according to claim 28, wherein the number of column vectors included in each group-of column vectors is equal to or greater than 1.
Claim 33
Dependent Claim
25 words
A driving method of a liquid crystal display element according to claim 28, wherein the number of scanning electrodes selected as a batch is 7.
Claim 34
Dependent Claim
25 words
A driving method of a liquid crystal display element according to claim 28, wherein the number of scanning electrodes selected as a batch is 4.
Claim 35
Dependent Claim
30 words
A driving method of a liquid crystal display element according to claim 28, wherein an average response time of the liquid crystal display element is 100 m sec or lower.
Claim 36
Dependent Claim
25 words
A driving method of a liquid crystal display element according to claim 28, wherein the liquid crystal display element includes a difluorostilbene type liquid crystal.
Claim 37
Dependent Claim
25 words
A driving method of a liquid crystal display element according to claim 28, wherein the liquid crystal display element includes a tolan type liquid crystal.
Claim 38
Dependent Claim
25 words
A driving method of a liquid crystal display element according to claim 28, wherein the liquid crystal display element is of a supertwisted nematic type.
Claim 39
Dependent Claim
31 words
A driving method of a liquid crystal display, element according to claim 28, wherein in the selection matrix a frequency of a selection pulse is uniformly applied to the scanning electrodes.
Claim 40
Dependent Claim
69 words
A driving method of a liquid crystal display element according to claim 28, further comprising a step that a voltage to be applied to the column electrodes is selected from voltage levels which are previously determined so as to correspond to a sum which is obtained by adding outputs from an exclusive OR gate for comparing logic levels corresponding to scanning electrode voltages with logic levels corresponding to data.
Claim 41
Dependent Claim
37 words
A driving method of a liquid crystal display element according to claim 37, further comprising a step that a gray shade is effected by displaying a plural number of ON and OFF signs at a specified ratio.
Claim 42
Dependent Claim
496 words
A driving method of a liquid crystal display having a plurality of scanning electrodes and a plurality of data electrodes, said method comprising the steps of: (a) dividing said plurality of scanning electrodes into a plurality of scanning electrode subgroups, each scanning electrode subgroup comprising a plurality of scanning electrodes; (b) determining if said each scanning electrode subgroup includes a same number of electrodes and, if not, appending a suitable number of dummy electrodes to the scanning electrode subgroups so that said each scanning electrode subgroup includes the same number of electrodes; (c) generating a selection matrix including a plurality of column vectors arranged in a time sequential order, and for each scanning electrode subgroup, providing the selection matrix, the selection matrix having substantial orthogonality, wherein (c1) each row vector of the selection matrix has a one-to-one correspondence with a specified scanning electrode which belongs to the scanning electrode subgroup; (c2) each element of a column vector of the selection matrix corresponds to a height of a pulse applied on each scanning electrode which belongs to the scanning electrode subgroup when the scanning electrode subgroup is selected; and (d) scanning the scanning electrodes by (d1) applying selection pulses on scanning electrodes of a first selected scanning electrode subgroup so that the first selected scanning electrode subgroup is selected as a batch, wherein the selection pulses correspond to one column vector of the selection matrix, and applying a relative zero voltage on scanning electrodes of each non-selected scanning electrode subgroup; (d2) applying selection pulses on scanning electrodes of a next selected scanning electrode subgroup so that the next selected scanning electrode subgroup is selected as a batch, wherein the selection pulses correspond to one column vector of the selection matrix, and applying a relative zero voltage on scanning electrodes of each non-selected scanning electrode subgroup; (d3) repeating step (d2) for each scanning electrode subgroup, wherein groups of column vectors used in steps (d1) to (d3) are different from each other in at least two scanning electrode subgroups; (d4) applying selection pulses on scanning electrodes of the first selected scanning electrode subgroup so that the first selected scanning electrode subgroup is selected as a batch, wherein the selection pulses correspond to a next column vector of the selection matrix, and applying a relative zero voltage on scanning electrodes of each non-selected scanning electrode subgroup; (d5) applying selection pulses on scanning electrodes of the next selected scanning electrode subgroup so that the next selected scanning electrode subgroup is selected as a batch, wherein the selection pulses correspond to a next column vector of the selection matrix, and applying a relative zero voltage on scanning electrodes of each non-selected scanning electrode subgroup; (d6) repeating step (d5) for each scanning electrode subgroup, wherein groups of column vectors used in steps (d4) to (d6) are different from each other in at least two scanning electrode subgroups; and (d7) repeating steps (d4), (d5) and (d6) for each one of the groups column vectors.
Claim 43
Dependent Claim
496 words
A driving method of a liquid crystal display having a plurality of scanning electrodes and a plurality of data electrodes, said method comprising the steps of: (a) dividing said plurality of scanning electrodes into a plurality of scanning electrode subgroups, each scanning electrode subgroup comprising a plurality of scanning electrodes; (b) determining if said each scanning electrode subgroup includes a same number of electrodes and, if not, appending a suitable number of dummy electrodes to the scanning electrode subgroups so that said each scanning electrode subgroup includes the same number of electrodes; (c) generating a selection matrix including a plurality of column vectors arranged in a time sequential order, and for each scanning electrode subgroup, providing the selection matrix, the selection matrix having substantial orthogonality, wherein (c1) each row vector of the selection matrix has a one-to-one correspondence with a specified scanning electrode which belongs to the scanning electrode subgroup; (c2) each element of a column vector of the selection matrix corresponds to a height of a pulse applied on each scanning electrode which belongs to the scanning electrode subgroup when the scanning electrode subgroup is selected; and (d) scanning the scanning electrodes by (d1) applying selection pulses on scanning electrodes of a first selected scanning electrode subgroup so that the first selected scanning electrode subgroup is selected as a batch, wherein the selection pulses correspond to one column vector of the selection matrix, and applying a relative zero voltage on scanning electrodes of each non-selected scanning electrode subgroup; (d2) applying selection pulses on scanning electrodes of a next selected scanning electrode subgroup so that the next selected scanning electrode subgroup is selected as a batch, wherein the selection pulses correspond to one column vector of the selection matrix, and applying a relative zero voltage on scanning electrodes of each non-selected scanning electrode subgroup; (d3) repeating step (d2) for each scanning electrode subgroup, wherein groups of column vectors used in steps (d1) to (d3) are different from each other in at least two scanning electrode subgroups; (d4) applying selection pulses on scanning electrodes of the first selected scanning electrode subgroup so that the first selected scanning electrode subgroup is selected as a batch, wherein the selection pulses correspond to a next column vector of the selection matrix, and applying a relative zero voltage on scanning electrodes of each non-selected scanning electrode subgroup; (d5) applying selection pulses on scanning electrodes of the next selected scanning electrode subgroup so that the next selected scanning electrode subgroup is selected as a batch, wherein the selection pulses correspond to a next column vector of the selection matrix, and applying a relative zero voltage on scanning electrodes of each non-selected scanning electrode subgroup; (d6) repeating step (d5) for each scanning electrode subgroup, wherein groups of column vectors used in steps (d4) to (d6) are different from each other in at least two scanning electrode subgroups; and (d7) repeating steps (d4), (d5) and (d6) for each one of the groups column vectors.
Claim 44
Dependent Claim
25 words
A driving method of a liquid crystal display element according to claim 39, wherein the number of scanning electrodes selected as a batch is 7.
Claim 45
Dependent Claim
25 words
A driving method of a liquid crystal display element according to claim 39, wherein the number of scanning electrodes selected as a batch is 4.
Claim 46
Dependent Claim
30 words
A driving method of a liquid crystal display element according to claim 39, wherein an average response time of the liquid crystal display element is 100 m sec or lower.
Claim 47
Dependent Claim
25 words
A driving method of a liquid crystal display element according to claim 39, wherein the liquid crystal display element includes a difluorostilbene type liquid crystal.
Claim 48
Dependent Claim
25 words
A driving method of a liquid crystal display element according to claim 39, wherein the liquid crystal display element includes a tolan type liquid crystal.
Claim 49
Dependent Claim
25 words
A driving method of a liquid crystal display element according to claim 39, wherein the liquid crystal display element is of a supertwisted nematic type.
Claim 50
Dependent Claim
31 words
A driving method of a liquid crystal display element according to claim 39, wherein in the selection matrix a frequency of a selection pulse is uniformly applied to the scanning electrodes.
Claim 51
Dependent Claim
69 words
A driving method of a liquid crystal display element according to claim 39, further comprising a step that a voltage to be applied to the column electrodes is selected from voltage levels which are previously determined so as to correspond to a sum which is obtained by adding outputs from an exclusive OR gate for comparing logic levels corresponding to scanning electrode voltages with logic levels corresponding to data.
Claim 52
Dependent Claim
37 words
A driving method of a liquid crystal display element according to claim 47, further comprising a step that a gray shade is effected by displaying a plural number of ON and OFF signs at a specified ratio.
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