JP2008233652A - 表示装置及びその駆動方法と電子機器 - Google Patents
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- 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
- G09G3/22—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 using controlled light sources
- G09G3/30—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 using controlled light sources using electroluminescent panels
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- 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
- G09G3/22—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 using controlled light sources
- G09G3/30—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 using controlled light sources using electroluminescent panels
- G09G3/32—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3225—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
- G09G3/3233—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix with pixel circuitry controlling the current through the light-emitting element
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- 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
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- 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
- G09G3/22—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 using controlled light sources
- G09G3/30—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 using controlled light sources using electroluminescent panels
- G09G3/32—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
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- G09G2300/0861—Several active elements per pixel in active matrix panels forming a memory circuit, e.g. a dynamic memory with one capacitor with additional control of the display period without amending the charge stored in a pixel memory, e.g. by means of additional select electrodes
- G09G2300/0866—Several active elements per pixel in active matrix panels forming a memory circuit, e.g. a dynamic memory with one capacitor with additional control of the display period without amending the charge stored in a pixel memory, e.g. by means of additional select electrodes by means of changes in the pixel supply voltage
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- G09G2320/02—Improving the quality of display appearance
- G09G2320/0233—Improving the luminance or brightness uniformity across the screen
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- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
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- G09G2320/00—Control of display operating conditions
- G09G2320/04—Maintaining the quality of display appearance
- G09G2320/043—Preventing or counteracting the effects of ageing
Abstract
【解決手段】サンプリング用トランジスタT1は、制御信号が立ち上がる第1タイミングでオンした後、映像信号が基準電位から信号電位に立ち上がる第2タイミングから、制御信号が立ち下がってオフする第3タイミングまでのサンプリング期間に、信号電位をサンプリングして保持容量C1に書き込むとともに、駆動用トランジスタT2に流れる電流を保持容量C1に負帰還して駆動用トランジスタT2の移動度に対する補正を保持容量C1に書き込まれた信号電位にかける。信号ドライバ3は、制御用スキャナ4から出力された制御信号の走査線WSに沿った伝送遅延による第3タイミングの後方シフトを補償するように、各信号線SLに供給する映像信号の第2タイミングを調整する。
【選択図】図2
Description
Ids=(1/2)μ(W/L)Cox(Vgs−Vth)2
ここでμは駆動用トランジスタの移動度、Wは駆動用トランジスタのチャネル幅、Lは同じくチャネル長、Coxは同じく単位面積あたりのゲート絶縁膜容量、Vthは同じく閾電圧である。この特性式から明らかなように駆動用トランジスタT2は飽和領域で動作するとき、ゲート電圧Vgsに応じてドレイン電流Idsを供給する定電流源として機能する。
Claims (5)
- 画素アレイ部とこれを駆動する駆動部とからなり、
前記画素アレイ部は、行状の走査線と、列状の信号線と、両者が交差する部分に配された行列状の画素と、所定の給電線とを備え、
前記駆動部は、各走査線に順次制御信号を出力し、画素を行単位で線順次走査する制御用スキャナと、
該線順次走査に合わせて列状の信号線に映像信号となる信号電位と基準電位を供給する信号ドライバとを備え、
前記画素は、発光素子と、サンプリング用トランジスタと、駆動用トランジスタと、保持容量とを含み、
前記サンプリング用トランジスタは、そのゲートが該走査線に接続し、そのソース及びドレインの一方が該信号線に接続し、他方が該駆動用トランジスタのゲートに接続し、
前記駆動用トランジスタは、そのソース及びドレインの一方が該発光素子に接続し、他方が該給電線に接続し、
前記保持容量は、該駆動用トランジスタのソースとゲートの間に接続している表示装置であって、
前記サンプリング用トランジスタは、該制御信号が立ち上がる第1タイミングでオンした後、該映像信号が基準電位から信号電位に立ち上がる第2タイミングから、該制御信号が立ち下がってオフする第3タイミングまでのサンプリング期間に、該信号電位をサンプリングして該保持容量に書き込むとともに、
該サンプリング期間に該駆動用トランジスタに流れる電流を該保持容量に負帰還して該駆動用トランジスタの移動度に対する補正を該保持容量に書き込まれた信号電位にかけ、
前記駆動用トランジスタは、該補正のかけられた信号電位に応じて駆動電流を該発光素子に流して発光させ、
前記信号ドライバは、該制御用スキャナから出力された制御信号の走査線に沿った伝送遅延による該第3タイミングの後方シフトを補償するように、各信号線に供給する映像信号の該第2タイミングを調整することを特徴とする表示装置。 - 前記駆動用トランジスタは、該第3タイミングでサンプリング用トランジスタがオフすると、該駆動用トランジスタのゲートが該信号線から切り離され、
該発光素子に対する駆動電流の供給により該駆動用トランジスタのソース電位が上昇した時、これに追従して該駆動用トランジスタのゲート電位も上昇し、以ってソースとゲート間の電圧を一定に維持することを特徴とする請求項1記載の表示装置。 - 前記駆動部は、該サンプリング期間に先立って行状に配された各給電線の電位を高低で切り換え操作する電源スキャナを備えており、
この切換え操作により、該駆動用トランジスタがカットオフする時の閾電圧をあらかじめ該保持容量に書き込むことを特徴とする請求項1記載の表示装置。 - 画素アレイ部とこれを駆動する駆動部とからなり、
前記画素アレイ部は、行状の走査線と、列状の信号線と、両者が交差する部分に配された行列状の画素と、所定の給電線とを備え、
前記駆動部は、各走査線に順次制御信号を出力し、画素を行単位で線順次走査する制御用スキャナと、
該線順次走査に合わせて列状の信号線に映像信号となる信号電位と基準電位を供給する信号ドライバとを備え、
前記画素は、発光素子と、サンプリング用トランジスタと、駆動用トランジスタと、保持容量とを含み、
前記サンプリング用トランジスタは、そのゲートが該走査線に接続し、そのソース及びドレインの一方が該信号線に接続し、他方が該駆動用トランジスタのゲートに接続し、
前記駆動用トランジスタは、そのソース及びドレインの一方が該発光素子に接続し、他方が該給電線に接続し、
前記保持容量は、該駆動用トランジスタのソースとゲートの間に接続している表示装置の駆動方法であって、
前記サンプリング用トランジスタは、該制御信号が立ち上がる第1タイミングでオンした後、該映像信号が基準電位から信号電位に立ち上がる第2タイミングから、該制御信号が立ち下がってオフする第3タイミングまでのサンプリング期間に、該信号電位をサンプリングして該保持容量に書き込むとともに、
該サンプリング期間に該駆動用トランジスタに流れる電流を該保持容量に負帰還して該駆動用トランジスタの移動度に対する補正を該保持容量に書き込まれた信号電位にかけ、
前記駆動用トランジスタは、該補正のかけられた信号電位に応じて駆動電流を該発光素子に流して発光させ、
前記信号ドライバは、該制御用スキャナから出力された制御信号の走査線に沿った伝送遅延による該第3タイミングの後方シフトを補償するように、各信号線に供給する映像信号の該第2タイミングを調整することを特徴とする表示装置の駆動方法。 - 請求項1に記載の表示装置を備えた電子機器。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
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JP2007074986A JP4337897B2 (ja) | 2007-03-22 | 2007-03-22 | 表示装置及びその駆動方法と電子機器 |
TW097108370A TW200849196A (en) | 2007-03-22 | 2008-03-10 | Display apparatus and driving method therefor, and electronic device |
US12/073,929 US8044894B2 (en) | 2007-03-22 | 2008-03-12 | Display apparatus and driving method therefor, and electronic device |
KR1020080023696A KR20080086351A (ko) | 2007-03-22 | 2008-03-14 | 표시장치 및 그 구동방법과 전자기기 |
CN2008100877408A CN101271668B (zh) | 2007-03-22 | 2008-03-24 | 显示装置及其驱动方法、以及电子设备 |
US13/137,192 US8390541B2 (en) | 2007-03-22 | 2011-07-27 | Display apparatus and driving method therefor, and electronic device |
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JP2007074986A JP4337897B2 (ja) | 2007-03-22 | 2007-03-22 | 表示装置及びその駆動方法と電子機器 |
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JP2008233652A true JP2008233652A (ja) | 2008-10-02 |
JP4337897B2 JP4337897B2 (ja) | 2009-09-30 |
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US (2) | US8044894B2 (ja) |
JP (1) | JP4337897B2 (ja) |
KR (1) | KR20080086351A (ja) |
CN (1) | CN101271668B (ja) |
TW (1) | TW200849196A (ja) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010266492A (ja) * | 2009-05-12 | 2010-11-25 | Sony Corp | 画素回路、表示装置、画素回路の駆動方法 |
US8243107B2 (en) | 2009-11-19 | 2012-08-14 | Panasonic Corporation | Display panel device, display device, and control method thereof |
US8289350B2 (en) | 2009-11-19 | 2012-10-16 | Panasonic Corporation | Display panel device, display device, and control method thereof |
US8294701B2 (en) | 2009-11-19 | 2012-10-23 | Panasonic Corporation | Display panel device, display device, and control method thereof |
US8514152B2 (en) | 2009-02-05 | 2013-08-20 | Samsung Display Co., Ltd. | Display device with improved luminance uniformity among pixels and driving method thereof |
CN108877684A (zh) * | 2018-08-31 | 2018-11-23 | 合肥鑫晟光电科技有限公司 | 像素电路及其驱动方法、阵列基板、显示面板、显示装置 |
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Publication number | Priority date | Publication date | Assignee | Title |
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US8217861B2 (en) * | 2008-10-30 | 2012-07-10 | National Cheng Kung University | Driving circuit, and a pixel circuit incorporating the same |
TWI408655B (zh) * | 2008-12-29 | 2013-09-11 | Innolux Corp | 影像顯示系統與顯示面板及其閘極線電路 |
KR101924605B1 (ko) * | 2011-12-16 | 2018-12-04 | 삼성디스플레이 주식회사 | 유기 발광 표시 장치 및 그 제조방법 |
KR102252044B1 (ko) * | 2013-12-04 | 2021-05-17 | 삼성디스플레이 주식회사 | 표시 장치 |
CN109273516A (zh) * | 2013-12-31 | 2019-01-25 | 京东方科技集团股份有限公司 | Amoled阵列基板及显示装置 |
KR101678276B1 (ko) * | 2014-10-01 | 2016-11-22 | 엘지디스플레이 주식회사 | 유기발광 표시장치 |
CN107909967B (zh) * | 2017-12-11 | 2021-04-09 | 成都晶砂科技有限公司 | 一种可选择驱动管工作区域的驱动方法及驱动电路 |
CN110060652A (zh) * | 2019-06-10 | 2019-07-26 | 北海惠科光电技术有限公司 | 阵列基板、显示装置及其驱动方法 |
CN111161670B (zh) * | 2020-03-02 | 2022-03-29 | 南京浣轩半导体有限公司 | 一种多行扫换行显示方法和芯片 |
CN111445858A (zh) * | 2020-04-20 | 2020-07-24 | 昆山国显光电有限公司 | 像素电路及其驱动方法、显示装置 |
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Also Published As
Publication number | Publication date |
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JP4337897B2 (ja) | 2009-09-30 |
US8390541B2 (en) | 2013-03-05 |
US20080231559A1 (en) | 2008-09-25 |
US8044894B2 (en) | 2011-10-25 |
KR20080086351A (ko) | 2008-09-25 |
CN101271668A (zh) | 2008-09-24 |
TW200849196A (en) | 2008-12-16 |
CN101271668B (zh) | 2010-06-23 |
US20110285692A1 (en) | 2011-11-24 |
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