JP4419603B2 - 液晶表示装置の駆動方法 - Google Patents
液晶表示装置の駆動方法 Download PDFInfo
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- JP4419603B2 JP4419603B2 JP2004049104A JP2004049104A JP4419603B2 JP 4419603 B2 JP4419603 B2 JP 4419603B2 JP 2004049104 A JP2004049104 A JP 2004049104A JP 2004049104 A JP2004049104 A JP 2004049104A JP 4419603 B2 JP4419603 B2 JP 4419603B2
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- Prior art keywords
- liquid crystal
- pixel region
- voltage
- display
- display pixel
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- 239000004973 liquid crystal related substance Substances 0.000 title claims description 121
- 238000000034 method Methods 0.000 title claims description 69
- 239000010409 thin film Substances 0.000 claims description 2
- 230000007547 defect Effects 0.000 description 12
- 239000003990 capacitor Substances 0.000 description 9
- 239000000758 substrate Substances 0.000 description 6
- 230000005684 electric field Effects 0.000 description 5
- 239000011159 matrix material Substances 0.000 description 5
- 230000000644 propagated effect Effects 0.000 description 5
- 238000002834 transmittance Methods 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 238000005094 computer simulation Methods 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
Images
Classifications
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3648—Control of matrices with row and column drivers using an active matrix
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2310/00—Command of the display device
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/0232—Special driving of display border areas
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0209—Crosstalk reduction, i.e. to reduce direct or indirect influences of signals directed to a certain pixel of the displayed image on other pixels of said image, inclusive of influences affecting pixels in different frames or fields or sub-images which constitute a same image, e.g. left and right images of a stereoscopic display
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3614—Control of polarity reversal in general
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3648—Control of matrices with row and column drivers using an active matrix
- G09G3/3655—Details of drivers for counter electrodes, e.g. common electrodes for pixel capacitors or supplementary storage capacitors
Description
2,2a,2b ダミー画素領域
11,D1〜D16 データ線(信号線)
12,G1〜G13 ゲート線(走査線)
13 TFT(スイッチ素子)
14 画素電極
15 液晶容量
16 対向電極
17 蓄積容量
18 蓄積容量線
Claims (10)
- 複数の走査線が横方向に平行に配置され、複数の信号線が縦方向に平行に配置され、これらの走査線と信号線との各交点にスイッチ素子、画素電極及び液晶を含む画素が配置された画素領域を有し、
この画素領域が、画像表示に用いられる表示画素領域と、この表示画素領域の周囲に配置され画像表示に用いられないダミー画素領域とによって構成された、液晶表示装置において、
前記表示画素領域の駆動中に、前記ダミー画素領域でリバースツイストドメインが発生する上限電圧値よりも低く、かつ前記表示画素領域と前記ダミー画素領域との境界部に光り漏れが発生する下限電圧値よりも高い最適電圧を、少なくとも一部の前記ダミー画素領域の液晶に印加する、
ことを特徴とする液晶表示装置の駆動方法。 - 前記上限電圧値は、前記表示画素領域の液晶に印加する映像信号電圧の最大値よりも低い、
請求項1記載の液晶表示装置の駆動方法。 - 前記上限電圧値は、前記表示画素領域の液晶に印加する映像信号電圧の最大値よりも、前記スイッチ素子の光リーク電流による一フレーム期間後の電圧低下分だけ低い、
請求項1記載の液晶表示装置の駆動方法。 - 前記最適電圧は、前記ダミー画素領域の液晶に複数回印加した結果が前記上限電圧値よりも低くかつ前記下限電圧値よりも高くなる、複数の異なる値である、
請求項1記載の液晶表示装置の駆動方法。 - n,mが自然数であり、かつn>mであるとき、連続するn回のフレームのうち、
m回の前記最適電圧は、前記表示画素領域の液晶に印加する映像信号電圧の最小値又はこれよりも大きく、
残るn−m回の前記最適電圧は、前記表示画素領域の液晶に印加する映像信号電圧の最大値又はこれよりも小さい、
請求項1記載の液晶表示装置の駆動方法。 - 走査線反転駆動法を用い、
前記表示画素領域の左右に配置されたダミー画素領域では、前記最適電圧を前記液晶に印加し、
前記表示画素領域の上下に配置されたダミー画素領域では、前記下限電圧値よりも大きい電圧を前記液晶に印加する、
請求項1乃至5のいずれかに記載の液晶表示装置の駆動方法。 - 走査線反転駆動法を用い、
前記表示画素領域の左右に配置されたダミー画素領域で、前記最適電圧を前記液晶に印加し、
n,mが自然数であり、かつn>mであるとき、連続するn回のフレームのうち、
m回の前記最適電圧は、前記表示画素領域の液晶に印加する映像信号電圧の最小値又はこれよりも大きく、
残るn−m回の前記最適電圧は、前記表示画素領域の液晶に印加する映像信号電圧の最大値又はこれよりも小さい、
請求項1記載の液晶表示装置の駆動方法。 - 信号線反転駆動法を用い、
前記表示画素領域の上下に配置されたダミー画素領域では、前記最適電圧を前記液晶に印加し、
前記表示画素領域の左右に配置されたダミー画素領域では、前記下限電圧値よりも大きい電圧を前記液晶に印加する、
請求項1乃至5のいずれかに記載の液晶表示装置の駆動方法。 - 信号線反転駆動法を用い、
前記表示画素領域の上下に配置されたダミー画素領域では、前記最適電圧を前記液晶に印加し、
n,mが自然数であり、かつn>mであるとき、連続するn回のフレームのうち、
m回の前記最適電圧は、前記表示画素領域の液晶に印加する映像信号電圧の最小値又はこれよりも大きく、
残るn−m回の前記最適電圧は、前記表示画素領域の液晶に印加する映像信号電圧の最大値又はこれよりも小さい、
請求項1記載の液晶表示装置の駆動方法。 - 前記スイッチ素子が薄膜トランジスタである、
請求項1乃至9のいずれかに記載の液晶表示装置の駆動方法。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004049104A JP4419603B2 (ja) | 2004-02-25 | 2004-02-25 | 液晶表示装置の駆動方法 |
US11/063,539 US7656372B2 (en) | 2004-02-25 | 2005-02-24 | Method for driving liquid crystal display device having a display pixel region and a dummy pixel region |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004049104A JP4419603B2 (ja) | 2004-02-25 | 2004-02-25 | 液晶表示装置の駆動方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2005241778A JP2005241778A (ja) | 2005-09-08 |
JP4419603B2 true JP4419603B2 (ja) | 2010-02-24 |
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Application Number | Title | Priority Date | Filing Date |
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JP2004049104A Expired - Lifetime JP4419603B2 (ja) | 2004-02-25 | 2004-02-25 | 液晶表示装置の駆動方法 |
Country Status (2)
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US (1) | US7656372B2 (ja) |
JP (1) | JP4419603B2 (ja) |
Families Citing this family (51)
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2004
- 2004-02-25 JP JP2004049104A patent/JP4419603B2/ja not_active Expired - Lifetime
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