JP2008009141A - 画像表示装置の駆動方法 - Google Patents
画像表示装置の駆動方法 Download PDFInfo
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- JP2008009141A JP2008009141A JP2006179696A JP2006179696A JP2008009141A JP 2008009141 A JP2008009141 A JP 2008009141A JP 2006179696 A JP2006179696 A JP 2006179696A JP 2006179696 A JP2006179696 A JP 2006179696A JP 2008009141 A JP2008009141 A JP 2008009141A
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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
- G09G3/22—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
-
- 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
- G09G3/22—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
-
- 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
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2300/00—Aspects of the constitution of display devices
- G09G2300/08—Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
- G09G2300/0809—Several active elements per pixel in active matrix panels
- G09G2300/0819—Several active elements per pixel in active matrix panels used for counteracting undesired variations, e.g. feedback or autozeroing
-
- 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
- G09G2320/0233—Improving the luminance or brightness uniformity across the screen
-
- 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
- G09G2320/0238—Improving the black level
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Control Of El Displays (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
【解決手段】有機発光素子OLEDと、有機発光素子OLEDに電気的に接続され、有機発光素子OLEDの発光を制御する駆動トランジスタTdと、を有する画素回路を複数備えた画像表示装置の駆動方法において、有機発光素子OLEDの発光輝度に対応した画像信号を画素回路に供給するステップと、有機発光素子OLEDに逆バイアス電圧を印加するステップと、画像信号に基づいて有機発光素子OLEDを発光させるステップと、を含む。
【選択図】 図9
Description
準備期間の動作については、図3および図4を参照して説明する。準備期間では、電源線10が高電位(Vp)、マージ線12が高電位(VgH)、Tth制御線11が低電位(VgL)、走査線13が低電位(VgL)、画像信号線14がゼロ電位とされる。これにより、図4に示すように、閾値電圧検出用トランジスタTthがオフ、スイッチングトランジスタTsがオフ、駆動トランジスタTdがオン、スイッチングトランジスタTmがオンとされ、電源線10→駆動トランジスタTd→素子容量Coledという経路で電流が流れ、素子容量Coledに電荷が蓄積される。なお、この準備期間で素子容量Coledに電荷を蓄積する理由は、後述する閾値電圧検出期間に駆動トランジスタTdのゲート・ソース間電圧を閾値電圧に近づける際に、素子容量Coledを駆動トランジスタTdのドレイン・ソース間に流す電流の供給源として作用させるためである。
つぎに、閾値電圧検出期間の動作について図3および図5を参照して説明する。閾値電圧検出期間では、電源線10がゼロ電位、マージ線12が高電位(VgH)、Tth制御線11が高電位(VgH)、走査線13が低電位(VgL)、画像信号線14がゼロ電位とされる。これにより、図5に示すように、閾値電圧検出用トランジスタTthがオンとなり、駆動トランジスタTdのゲートとドレインとが接続される。
さらに、書き込み期間の動作について図3および図6を参照して説明する。書き込み期間では、データ電位(−Vdata)を容量Csに供給することにより、駆動トランジスタTdのゲート電位を所望電位に変化させることが行われる。具体的には、電源線10がゼロ電位、マージ線12が低電位(VgL)、Tth制御線11が高電位(VgH)、走査線13が高電位(VgH)、画像信号線14がデータ電位(−Vdata)とされる。
VCs=Vg−(−Vdata)=Vth+[(Call−Cs)/Call]・Vdata ・・・(2)
Call=Coled+Cs+CgsTth+CgdTth+CgsTd ・・・(3)
最後に、発光期間の動作について図3および図7を参照して説明する。発光期間では、電源線10がマイナス電位(−VDD)、マージ線12が高電位(VgH)、Tth制御線11が低電位(VgL)、走査線13が低電位(VgL)、画像信号線14がゼロ電位とされる。
Ids=β×[(Vgs−Vth)2] ・・・(4)
(b)Vgs−Vth≧Vds(線形領域)のとき
Ids=2×β×[(Vgs−Vth)×Vds−(1/2×Vds2)] ・・・(5)
β=1/2×μ×Cox×W/L ・・・(6)
(Ids)1/2=(β)1/2×(Vgs−Vth) ・・・(7)
Vgs=Vth+Coled/(Cs+Coled)・Vdata ・・・(8)
(Ids)1/2=(β)1/2・(Coled/(Cs+Coled)・Vdata)
=a・Vdata ・・・(9)
VA=−k1VDD
となる。
k1は、0<k1<1を満たす実数であり、理論的には、k1=Qtd/(Qoled+Qtd)の値をとる。ただし,Qoledは有機発光素子OLEDに蓄積された電荷、Qtdは駆動トランジスタTdに蓄積された電荷である。
11 制御線
12 マージ線
13 走査線
14 画像信号線
OLED 有機発光素子
Cs 容量
Td 駆動トランジスタ
Tm,Ts スイッチングトランジスタ
Tth 閾値電圧検出用トランジスタ
D1,D2,D3 発光素子
Q1,Q2,Q3 駆動素子
U1,U2,U3 コントローラ
Claims (4)
- 発光手段と、
前記発光手段に電気的に接続され、前記発光手段の発光を制御するドライバ手段と、を有する画素回路を複数備えた画像表示装置の駆動方法において、
前記発光手段の発光輝度に対応した画像信号を前記画素回路に供給するステップと、
前記発光手段に逆バイアス電圧を印加するステップと、
前記画像信号に基づいて前記発光手段を発光させるステップと、
を含むことを特徴とする画像表示装置の駆動方法。 - 前記発光手段に対する逆バイアス電圧の印加は、該発光手段および前記ドライバ手段に対して電気的に接続される電源線の電位を変化させることによって行われることを特徴とする請求項1に記載の画像表示装置の駆動方法。
- 前記発光手段に逆バイアスを印加する際、ならびに前記発光手段を発光させる際に、前記発光手段と前記ドライバ手段とが電気的に直列に接続されていることを特徴とする請求項1または2に記載の画像表示装置の駆動方法。
- 前記発光手段は有機発光素子により、前記ドライバ手段は薄膜トランジスタにより、それぞれ構成されており、
前記有機発光素子の持つ素子容量は、前記薄膜トランジスタのソース・ドレイン間の寄生容量よりも大きいことを特徴とする請求項1〜3のいずれか一つに記載の画像表示装置の駆動方法。
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006179696A JP4786437B2 (ja) | 2006-06-29 | 2006-06-29 | 画像表示装置の駆動方法 |
| CN2007800243660A CN101479780B (zh) | 2006-06-29 | 2007-06-29 | 图像显示装置的驱动方法 |
| PCT/JP2007/063167 WO2008001911A1 (en) | 2006-06-29 | 2007-06-29 | Method for driving image display apparatus |
| KR1020087031567A KR20090023639A (ko) | 2006-06-29 | 2007-06-29 | 화상 표시 장치의 구동 방법 |
| US12/306,877 US8605014B2 (en) | 2006-06-29 | 2007-06-29 | Method of driving image display apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006179696A JP4786437B2 (ja) | 2006-06-29 | 2006-06-29 | 画像表示装置の駆動方法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2008009141A true JP2008009141A (ja) | 2008-01-17 |
| JP4786437B2 JP4786437B2 (ja) | 2011-10-05 |
Family
ID=38845671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2006179696A Active JP4786437B2 (ja) | 2006-06-29 | 2006-06-29 | 画像表示装置の駆動方法 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US8605014B2 (ja) |
| JP (1) | JP4786437B2 (ja) |
| KR (1) | KR20090023639A (ja) |
| CN (1) | CN101479780B (ja) |
| WO (1) | WO2008001911A1 (ja) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009096479A1 (ja) * | 2008-01-31 | 2009-08-06 | Kyocera Corporation | 画像表示装置 |
| JP2009244666A (ja) * | 2008-03-31 | 2009-10-22 | Sony Corp | パネルおよび駆動制御方法 |
| JP2009258301A (ja) * | 2008-04-15 | 2009-11-05 | Eastman Kodak Co | 表示装置 |
| JP2010078922A (ja) * | 2008-09-26 | 2010-04-08 | Toshiba Corp | 表示装置及びその駆動方法 |
| JP2010085474A (ja) * | 2008-09-29 | 2010-04-15 | Sony Corp | 表示パネルモジュール及び電子機器 |
| JP2010175779A (ja) * | 2009-01-29 | 2010-08-12 | Seiko Epson Corp | 単位回路の駆動方法及び電気光学装置の駆動方法 |
| JP2010243938A (ja) * | 2009-04-09 | 2010-10-28 | Sony Corp | 表示装置およびその駆動方法 |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101073281B1 (ko) | 2010-05-10 | 2011-10-12 | 삼성모바일디스플레이주식회사 | 유기전계발광 표시장치 및 그의 구동방법 |
| KR101082234B1 (ko) | 2010-05-13 | 2011-11-09 | 삼성모바일디스플레이주식회사 | 유기전계발광 표시장치 및 그의 구동방법 |
| KR102507208B1 (ko) * | 2018-01-10 | 2023-03-07 | 삼성디스플레이 주식회사 | 유기 발광 표시 장치 및 그 구동방법 |
| CN108648690B (zh) * | 2018-04-26 | 2020-04-17 | 上海天马有机发光显示技术有限公司 | 一种显示面板及显示装置 |
| TWI734287B (zh) * | 2019-12-05 | 2021-07-21 | 友達光電股份有限公司 | 顯示裝置與顯示面板 |
| KR102740676B1 (ko) * | 2021-09-30 | 2024-12-11 | 엘지디스플레이 주식회사 | 픽셀 회로와 이를 포함한 표시장치 |
| KR20240081795A (ko) * | 2022-12-01 | 2024-06-10 | 엘지디스플레이 주식회사 | 화소 회로 및 이를 포함하는 표시 장치 |
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| JP2004280059A (ja) * | 2003-02-24 | 2004-10-07 | Chi Mei Electronics Corp | 表示装置 |
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| JP2007310034A (ja) * | 2006-05-16 | 2007-11-29 | Eastman Kodak Co | 表示装置 |
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| CN1217307C (zh) * | 2000-07-28 | 2005-08-31 | 日亚化学工业株式会社 | 显示装置驱动电路以及显示装置 |
| JP3736399B2 (ja) * | 2000-09-20 | 2006-01-18 | セイコーエプソン株式会社 | アクティブマトリクス型表示装置の駆動回路及び電子機器及び電気光学装置の駆動方法及び電気光学装置 |
| JP4024557B2 (ja) * | 2002-02-28 | 2007-12-19 | 株式会社半導体エネルギー研究所 | 発光装置、電子機器 |
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2006
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2007
- 2007-06-29 US US12/306,877 patent/US8605014B2/en active Active
- 2007-06-29 WO PCT/JP2007/063167 patent/WO2008001911A1/ja not_active Ceased
- 2007-06-29 KR KR1020087031567A patent/KR20090023639A/ko not_active Ceased
- 2007-06-29 CN CN2007800243660A patent/CN101479780B/zh active Active
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009096479A1 (ja) * | 2008-01-31 | 2009-08-06 | Kyocera Corporation | 画像表示装置 |
| JP2009244666A (ja) * | 2008-03-31 | 2009-10-22 | Sony Corp | パネルおよび駆動制御方法 |
| US8432389B2 (en) | 2008-03-31 | 2013-04-30 | Sony Corporation | Panel and driving controlling method |
| JP2009258301A (ja) * | 2008-04-15 | 2009-11-05 | Eastman Kodak Co | 表示装置 |
| JP2010078922A (ja) * | 2008-09-26 | 2010-04-08 | Toshiba Corp | 表示装置及びその駆動方法 |
| JP2010085474A (ja) * | 2008-09-29 | 2010-04-15 | Sony Corp | 表示パネルモジュール及び電子機器 |
| CN101714331B (zh) * | 2008-09-29 | 2012-10-03 | 索尼株式会社 | 显示板模块和电子设备 |
| JP2010175779A (ja) * | 2009-01-29 | 2010-08-12 | Seiko Epson Corp | 単位回路の駆動方法及び電気光学装置の駆動方法 |
| JP2010243938A (ja) * | 2009-04-09 | 2010-10-28 | Sony Corp | 表示装置およびその駆動方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2008001911A1 (en) | 2008-01-03 |
| US20090322726A1 (en) | 2009-12-31 |
| CN101479780B (zh) | 2011-07-13 |
| KR20090023639A (ko) | 2009-03-05 |
| JP4786437B2 (ja) | 2011-10-05 |
| US8605014B2 (en) | 2013-12-10 |
| CN101479780A (zh) | 2009-07-08 |
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