JP5064421B2 - 有機電界発光表示装置及びその駆動方法 - Google Patents
有機電界発光表示装置及びその駆動方法 Download PDFInfo
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- 238000000034 method Methods 0.000 title claims description 16
- 239000003990 capacitor Substances 0.000 claims description 42
- 238000010586 diagram Methods 0.000 description 14
- 230000007423 decrease Effects 0.000 description 4
- 230000004044 response Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 238000005401 electroluminescence Methods 0.000 description 1
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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
- 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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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. PN junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/70—Bipolar devices
- H01L29/74—Thyristor-type devices, e.g. having four-zone regenerative action
- H01L29/7404—Thyristor-type devices, e.g. having four-zone regenerative action structurally associated with at least one other device
- H01L29/742—Thyristor-type devices, e.g. having four-zone regenerative action structurally associated with at least one other device the device being a field effect transistor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. PN junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/70—Bipolar devices
- H01L29/74—Thyristor-type devices, e.g. having four-zone regenerative action
- H01L29/749—Thyristor-type devices, e.g. having four-zone regenerative action with turn-on by field effect
-
- 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
- G09G2300/0852—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 with more than 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
- G09G2310/00—Command of the display device
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/0243—Details of the generation of driving signals
- G09G2310/0251—Precharge or discharge of pixel before applying new pixel voltage
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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
- G09G2310/00—Command of the display device
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/0262—The addressing of the pixel, in a display other than an active matrix LCD, involving the control of two or more scan electrodes or two or more data electrodes, e.g. pixel voltage dependent on signals of two data electrodes
-
- 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
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- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Theoretical Computer Science (AREA)
- Ceramic Engineering (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Control Of El Displays (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Electroluminescent Light Sources (AREA)
Description
Vgs(M1)=Vdata−Vref+Vth(M1)
Ioled=β(Vgs(M1)−Vth(M1))2=β{(Vdata−Vref+Vth(M1))−Vth(M1)}2=β(Vdata−Vref)2
ELVDD>Vdata≧Vref
120 データ駆動部
140,140' 画素
142,142' 画素回路
150 タイミング制御部
Claims (11)
- 走査線に走査信号を順次供給するための走査駆動部と、
データ線に前記走査信号が供給される期間のうち、第1期間に初期電源を供給し、前記第1期間を除いた第2期間にデータ信号を供給するためのデータ駆動部と、
前記走査線及びデータ線の交差部に位置する画素と、
を備え、
i(iは自然数)番目の水平ラインに位置する前記画素は、
カソード電極が第2電源と接続される有機発光ダイオードと、
第1電源から前記有機発光ダイオードを経由して前記第2電源に流れる電流量を制御する第1トランジスタと、
前記データ線及びi番目の走査線に接続され、前記i番目の走査線に前記走査信号が供給される時にターンオンされる第2トランジスタと、
前記第1トランジスタのゲート電極と接続される第1ノードと前記第2トランジスタとの間に接続され、前記第2トランジスタがターンオンされる時にターンオフ状態に設定される第3トランジスタと、
前記第1ノードと基準電源との間に接続され、前記i番目の走査線に走査信号が供給される時にターンオンされる第4トランジスタと、
前記第3トランジスタ及び第2トランジスタの共通ノードである第2ノードと前記有機発光ダイオードのアノード電極とに直接接続される第1キャパシタと、
前記第1ノードと前記第2ノードに接続される第2キャパシタと、
を備えることを特徴とする有機電界発光表示装置。 - 前記データ信号の電圧は前記基準電源の電圧と同一であるか、高い電圧に設定されることを特徴とする請求項1に記載の有機電界発光表示装置。
- 前記初期電源の電圧は前記データ信号の電圧よりも高い電圧に設定されることを特徴とする請求項1に記載の有機電界発光表示装置。
- 前記第1ノードと前記第2ノードとの間に前記第3トランジスタと並列に接続される第2キャパシタを更に備えることを特徴とする請求項1に記載の有機電界発光表示装置。
- 前記第3トランジスタは、i+1番目の走査線に走査信号が供給される時にターンオンされることを特徴とする請求項4に記載の有機電界発光表示装置。
- 前記走査駆動部は、前記走査線と平行に位置する発光制御線に発光制御信号を順次供給することを特徴とする請求項1に記載の有機電界発光表示装置。
- i番目の発光制御線に供給される発光制御信号は前記i番目の走査線に供給される走査信号と重なり、トランジスタがターンオフされ得る電圧に設定されることを特徴とする請求項6に記載の有機電界発光表示装置。
- 前記第3トランジスタのゲート電極は、前記i番目の発光制御線と接続されることを特徴とする請求項7に記載の有機電界発光表示装置。
- 有機発光ダイオードのアノード電極に電流を供給するための駆動トランジスタと、第1端子が前記有機発光ダイオードのアノード電極に接続される第1キャパシタと、前記駆動トランジスタのゲート電極と前記第1キャパシタの他方の端子との間に並列に接続される第2キャパシタと、
を備える有機電界発光表示装置の駆動方法において、
走査信号が供給される期間に前記駆動トランジスタのゲート電極に基準電源を供給する段階と、
前記走査信号が供給される期間のうち、第1期間にデータ線を経由して前記第1キャパシタの第2端子に初期電源を供給する段階と、
前記走査信号が供給される期間のうち、第1期間を除いた第2期間に前記データ線を経由して前記第1キャパシタの第2端子にデータ信号を供給して前記有機発光ダイオードのアノード電極の電圧を前記基準電源から前記駆動トランジスタの閾値電圧を差し引いた値に設定する段階と、
前記駆動トランジスタのゲート電極と前記第1キャパシタの第2端子を電気的に接続させて前記有機発光ダイオードに電流を供給する段階と、
を含むことを特徴とする有機電界発光表示装置の駆動方法。 - 前記データ信号の電圧は前記基準電源の電圧と同一であるか、高い電圧に設定されることを特徴とする請求項9に記載の有機電界発光表示装置の駆動方法。
- 前記初期電源の電圧は前記データ信号の電圧よりも高い電圧に設定されることを特徴とする請求項9に記載の有機電界発光表示装置の駆動方法。
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KR10-2008-0118055 | 2008-11-26 | ||
KR1020080118055A KR100986915B1 (ko) | 2008-11-26 | 2008-11-26 | 유기전계발광 표시장치 및 그의 구동방법 |
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JP2010128491A JP2010128491A (ja) | 2010-06-10 |
JP5064421B2 true JP5064421B2 (ja) | 2012-10-31 |
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US (1) | US8654041B2 (ja) |
EP (1) | EP2192571B1 (ja) |
JP (1) | JP5064421B2 (ja) |
KR (1) | KR100986915B1 (ja) |
CN (1) | CN101739947B (ja) |
Cited By (1)
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KR20150026821A (ko) | 2013-08-29 | 2015-03-11 | 삼성디스플레이 주식회사 | 전기 광학 장치 |
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- 2009-10-23 CN CN2009102054397A patent/CN101739947B/zh not_active Expired - Fee Related
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KR20150026821A (ko) | 2013-08-29 | 2015-03-11 | 삼성디스플레이 주식회사 | 전기 광학 장치 |
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US8654041B2 (en) | 2014-02-18 |
KR100986915B1 (ko) | 2010-10-08 |
EP2192571A2 (en) | 2010-06-02 |
JP2010128491A (ja) | 2010-06-10 |
KR20100059318A (ko) | 2010-06-04 |
CN101739947A (zh) | 2010-06-16 |
EP2192571B1 (en) | 2017-08-23 |
CN101739947B (zh) | 2012-12-12 |
US20100127956A1 (en) | 2010-05-27 |
EP2192571A3 (en) | 2010-06-09 |
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