JP5037795B2 - 表示装置 - Google Patents
表示装置 Download PDFInfo
- Publication number
- JP5037795B2 JP5037795B2 JP2005077967A JP2005077967A JP5037795B2 JP 5037795 B2 JP5037795 B2 JP 5037795B2 JP 2005077967 A JP2005077967 A JP 2005077967A JP 2005077967 A JP2005077967 A JP 2005077967A JP 5037795 B2 JP5037795 B2 JP 5037795B2
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- JP
- Japan
- Prior art keywords
- driver element
- voltage
- potential
- power supply
- light emitting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- 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]
- G09G3/3275—Details of drivers for data electrodes
- G09G3/3291—Details of drivers for data electrodes in which the data driver supplies a variable data voltage for setting the current through, or the voltage across, the light-emitting elements
-
- 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
- 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
- G09G2300/0842—Several active elements per pixel in active matrix panels forming a memory circuit, e.g. a dynamic memory with one capacitor
-
- 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
- G09G2300/0842—Several active elements per pixel in active matrix panels forming a memory circuit, e.g. a dynamic memory with one capacitor
- G09G2300/0847—Several active elements per pixel in active matrix panels forming a memory circuit, e.g. a dynamic memory with one capacitor being a dynamic memory without any storage capacitor, i.e. with use of parasitic capacitances as storage elements
-
- 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
- G09G2300/0842—Several active elements per pixel in active matrix panels forming a memory circuit, e.g. a dynamic memory with one capacitor
- 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
-
- 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
- G09G2320/04—Maintaining the quality of display appearance
- G09G2320/043—Preventing or counteracting the effects of ageing
Landscapes
- 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)
Description
図1に本発明が適用された表示装置の回路構成を、図2にそのタイミングチャートを示す。
VSS−Vt(TFT)>=VDD−Voled
+{Coled/(Cs+Coled)}(Vp−VDD) (式2)
となるようにVpを設定する。すなわち、ドライバー素子12のドレイン電圧がそのゲートおよびソース電圧であるVSSからVt(TFT)を引いた値より低いものに設定する。
Vgs=VDD−Voled−VSS
+(Vdata−VSS){Coled/(Cs+Coled)}+Vt(式3)
となる(図3−3)。
id=(β/2)(Vgs−Vt)2
=(β/2)(VDD−Voled−VSS
+(Vdata−VSS){Coled/(Cs+Coled)})2(式4)
のようになる。
図4に本発明が適用された別の表示装置の回路構成を、図5にそのタイミングチャートを示す。
VDD−Vt(TFT)
<=Voled+{Coled/(Cs+Coled)}(Vp−VDD)(式5)
となるようにVpを設定する。
Vsg=VDD−Voled−VSS
+(Vdata−VDD){Coled/(Cs+Coled)}−Vt(式6)
となる(図6−3)。
id=(β/2)(Vsg+Vt)2=(β/2)(VDD−Voled−VSS+(Vdata−VDD){Coled/(Cs+Coled)})2 (式7)
以上により、ドライバー素子22の閾値電圧は補償される。
Claims (1)
- マトリクス状に配置された画素回路を有する表示装置であって、
各画素は、
正電源線にアノード電極が接続された発光素子と、
この発光素子のカソード電極にドレイン電極が接続され、負電源線にソース電極が接続されて、前記発光素子に流れる電流を制御するドライバー素子と、
このドライバー素子のゲート・ドレイン間に接続された静電容量と、
走査線によってオンオフされ、信号線からのドライバー素子のゲートへの信号電圧の供給を制御するスイッチング素子と、
を含み、
前記走査線を前記スイッチング素子が導通する電位とし、かつ、前記信号線の電位を前記負電源線の電位と同電位として、前記ドライバー素子をオフ状態にし、この状態で、前記正電源線の電位を前記負電源線の電位よりも低い電位にすることで、前記ドライバー素子のドレイン電圧がそのゲート及びソース電圧である前記負電源線の電位から当該ドライバー素子の閾値電圧を引いた値より低い値になるようにセットし、発光素子がオフの状態で前記ドライバー素子のソースおよびゲートにそれぞれ一定の電源電圧を印加して、ドライバー素子のドレインにドライバー素子の閾値電圧に応じた電圧をセットし、
その後ドライバー素子がオフの状態を維持したままで、スイッチング素子をオンして信号線より信号電圧をドライバー素子のゲートに供給して前記静電容量に信号電圧およびドライバー素子の閾値電圧に応じた電圧を充電し、
その後スイッチング素子をオフすると共に、前記正電源線の電圧を発光素子に印加される電圧が当該発光素子の閾値電圧より十分大きくなるようにセットすることで、ドライバー素子のゲートにその閾値電圧を補償した信号電圧に応じた電圧をセットして、ドライバー素子から前記発光素子に電流を供給して発光素子を発光させることを特徴とする表示装置。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005077967A JP5037795B2 (ja) | 2005-03-17 | 2005-03-17 | 表示装置 |
US11/366,283 US7808455B2 (en) | 2005-03-17 | 2006-03-02 | Display apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005077967A JP5037795B2 (ja) | 2005-03-17 | 2005-03-17 | 表示装置 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2006041560A Division JP5037832B2 (ja) | 2006-02-17 | 2006-02-17 | 表示装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2006259373A JP2006259373A (ja) | 2006-09-28 |
JP5037795B2 true JP5037795B2 (ja) | 2012-10-03 |
Family
ID=37009768
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2005077967A Active JP5037795B2 (ja) | 2005-03-17 | 2005-03-17 | 表示装置 |
Country Status (2)
Country | Link |
---|---|
US (1) | US7808455B2 (ja) |
JP (1) | JP5037795B2 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8332478B2 (en) | 1998-10-01 | 2012-12-11 | Digimarc Corporation | Context sensitive connected content |
US8429205B2 (en) | 1995-07-27 | 2013-04-23 | Digimarc Corporation | Associating data with media signals in media signal systems through auxiliary data steganographically embedded in the media signals |
US8442264B2 (en) | 1995-07-27 | 2013-05-14 | Digimarc Corporation | Control signals in streaming audio or video indicating a watermark |
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JP5037858B2 (ja) * | 2006-05-16 | 2012-10-03 | グローバル・オーエルイーディー・テクノロジー・リミテッド・ライアビリティ・カンパニー | 表示装置 |
JP4984715B2 (ja) | 2006-07-27 | 2012-07-25 | ソニー株式会社 | 表示装置の駆動方法、及び、表示素子の駆動方法 |
JP4203772B2 (ja) * | 2006-08-01 | 2009-01-07 | ソニー株式会社 | 表示装置およびその駆動方法 |
TW200822784A (en) * | 2006-11-01 | 2008-05-16 | Himax Tech Ltd | Organic light emitting diode display pixel circuit |
JP2008152096A (ja) * | 2006-12-19 | 2008-07-03 | Sony Corp | 表示装置、表示装置の駆動方法および電子機器 |
WO2008093451A1 (ja) * | 2007-01-31 | 2008-08-07 | Sharp Kabushiki Kaisha | 画素回路及び表示装置 |
JP2008192642A (ja) * | 2007-01-31 | 2008-08-21 | Tokyo Electron Ltd | 基板処理装置 |
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-
2005
- 2005-03-17 JP JP2005077967A patent/JP5037795B2/ja active Active
-
2006
- 2006-03-02 US US11/366,283 patent/US7808455B2/en active Active
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8429205B2 (en) | 1995-07-27 | 2013-04-23 | Digimarc Corporation | Associating data with media signals in media signal systems through auxiliary data steganographically embedded in the media signals |
US8442264B2 (en) | 1995-07-27 | 2013-05-14 | Digimarc Corporation | Control signals in streaming audio or video indicating a watermark |
US8332478B2 (en) | 1998-10-01 | 2012-12-11 | Digimarc Corporation | Context sensitive connected content |
Also Published As
Publication number | Publication date |
---|---|
JP2006259373A (ja) | 2006-09-28 |
US7808455B2 (en) | 2010-10-05 |
US20060208975A1 (en) | 2006-09-21 |
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