JP4913119B2 - 有機電気発光ディスプレイ装置及びその駆動方法 - Google Patents
有機電気発光ディスプレイ装置及びその駆動方法 Download PDFInfo
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- 238000000034 method Methods 0.000 title claims description 13
- 239000003990 capacitor Substances 0.000 claims description 15
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 239000011368 organic material Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 13
- 230000006866 deterioration Effects 0.000 description 12
- 239000011159 matrix material Substances 0.000 description 5
- 230000015556 catabolic process Effects 0.000 description 3
- 238000006731 degradation reaction Methods 0.000 description 3
- 229910021417 amorphous silicon Inorganic materials 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000010409 thin film Substances 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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- 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
- G09G3/3241—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 the current through the light-emitting element being set using a data current provided by the data driver, e.g. by using a two-transistor current mirror
- G09G3/325—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 the current through the light-emitting element being set using a data current provided by the data driver, e.g. by using a two-transistor current mirror the data current flowing through the driving transistor during a setting phase, e.g. by using a switch for connecting the driving transistor to the data driver
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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
- 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
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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
- G09G2310/0243—Details of the generation of driving signals
- G09G2310/0254—Control of polarity reversal in general, other than for liquid crystal displays
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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
- 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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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/10—Details of semiconductor or other solid state devices to be connected
- H01L2924/11—Device type
- H01L2924/13—Discrete devices, e.g. 3 terminal devices
- H01L2924/1304—Transistor
- H01L2924/1306—Field-effect transistor [FET]
- H01L2924/13069—Thin film transistor [TFT]
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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)
- Electroluminescent Light Sources (AREA)
- Control Of El Displays (AREA)
Description
20:ソース駆動部
30:ゲート駆動部
40:タイミング制御部
50:表示部
Claims (11)
- 駆動電圧と基底電圧及び基準電圧を出力する電源供給部と;
データ電圧を出力するソース駆動部と;
ポジティブスキャン信号とネガティブスキャン信号を出力するゲート駆動部と;
前記ソース駆動部と前記ゲート駆動部の動作を制御するタイミング制御部と;
前記駆動電圧と前記基底電圧と前記基準電圧及び前記データ電圧と前記ポジティブスキャン信号とネガティブスキャン信号の入力を受け、前記データ電圧によって駆動電流が決定される有機発光ダイオードを具備した表示部と
を含み、
前記表示部は、
第1スイッチングトランジスタ、第2スイッチングトランジスタ、駆動トランジスタ及びキャパシタをさらに備え、
前記第1スイッチングトランジスタは、前記データ電圧が入力端子に印加され、ゲート端子に印加される前記ポジティブスキャン信号によりスイッチング制御されて前記データ電圧を前記駆動トランジスタのゲート端子に出力するように構成され、
前記第2スイッチングトランジスタは、前記ネガティブスキャン信号が入力端子に印加され、ゲート端子に印加される前記ネガティブスキャン信号と前記基準電圧の電位差によりスイッチング制御されて前記ネガティブスキャン信号を前記駆動トランジスタのゲート端子に出力するように構成され;
前記駆動トランジスタは、前記第1スイッチングトランジスタから出力された前記データ電圧と前記基底電圧の電位差に応答して前記有機発光ダイオードに前記駆動電流を供給するように構成され;
前記キャパシタは、前記第1スイッチングトランジスタ及び前記第2スイッチングトランジスタから出力される電圧と前記基底電圧の電位差を保持するように構成されたことを特徴とする有機電気発光ディスプレイ装置。
- 前記ゲート駆動部は、前記ポジティブスキャン信号の出力頻度を前記ネガティブスキャン信号の出力頻度と同じかまたはより高く設定して出力することを特徴とする請求項1に記載の有機電気発光ディスプレイ装置。
- 前記ポジティブスキャン信号のハイレベル電圧は前記基底電圧に対して陽正極性電圧であってローレベル電圧は前記基底電圧に対して負極性電圧であり、前記ネガティブスキャン信号のハイレベル電圧は前記基準電圧よりも高く、ローレベル電圧は前記基底電圧に対して負極性電圧であることを特徴とする請求項2に記載の有機電気発光ディスプレイ装置。
- 前記ネガティブスキャン信号のローレベル電圧は、前記ポジティブスキャン信号のローレベル電圧より低い電圧であることを特徴とする請求項3に記載の有機電気発光ディスプレイ装置。
- 前記ネガティブスキャン信号のローレベル電圧は、前記基準電圧より低い電圧であることを特徴とする請求項3に記載の有機電気発光ディスプレイ装置。
- 前記基準電圧をVref、前記ポジティブスキャン信号のハイレベル電圧をVg+H、前記ポジティブスキャン信号のローレベル電圧をVg+Lとして、
前記Vrefは、前記Vg+HとVg+Lに対して、−[(Vg+H)−(Vg+L)]<Vref<Vg+Lの関係が成立する範囲の一つの電圧であることを特徴とする請求項5に記載の有機電気発光ディスプレイ装置。
- 前記第1スイッチングトランジスタと前記第2スイッチングトランジスタは、全てNMOSトランジスタであることを特徴とする請求項6に記載の有機電気発光ディスプレイ装置。
- スキャンラインに連結されたゲート電極とデータラインに連結されたソース電極を含む第1スイッチングトランジスタと;
基準電圧に連結されたゲート電極と前記スキャンラインに連結されたソース電極を含む第2スイッチングトランジスタと;
前記第1及び第2スイッチングトランジスタのドレイン電極に連結されたゲート電極と基底電圧に連結されたソース電極を含む駆動トランジスタと;
前記駆動トランジスタのゲート電極と前記基底電圧に連結されたキャパシタと;
前記駆動トランジスタのドレイン電極と駆動電圧に連結された有機発光ダイオードと
を含むことを特徴とする有機電気発光ディスプレイ装置。
- 第1スイッチングトランジスタのゲート端子にポジティブスキャン信号を印加する段階と;
前記ポジティブスキャン信号と同期したタイミングで前記第1スイッチングトランジスタを介してデータ電圧を駆動トランジスタのゲート端子に印加して有機発光ダイオードに駆動電流を供給する段階と;
第2スイッチングトランジスタのゲート端子及び入力端子に、前記駆動トランジスタの出力端子電圧に対して負極性である基準電圧及び前記基準電圧より低い電圧のネガティブスキャン信号をそれぞれ印加して前記駆動トランジスタのゲート端子に前記ネガティブスキャン信号を供給する段階と
を含むことを特徴とする有機電気発光ディスプレイ装置の駆動方法。
- 前記基準電圧をVref、前記ポジティブスキャン信号のハイレベル電圧をVg+H、前記ポジティブスキャン信号のローレベル電圧をVg+Lとして、
前記Vrefは、前記Vg+Hとローレベル電圧Vg+Lに対して、−[(Vg+H)−(Vg+L)]<Vref<Vg+Lの関係が成立する範囲の一つの電圧であることを特徴とする請求項9に記載の有機電気発光ディスプレイ装置の駆動方法。
- 前記第1スイッチングトランジスタと前記第2スイッチングトランジスタは、全てNMOSトランジスタで構成されることを特徴とする請求項9に記載の有機電気発光ディスプレイ装置の駆動方法。
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Application Number | Priority Date | Filing Date | Title |
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KR1020080040472A KR101338312B1 (ko) | 2008-04-30 | 2008-04-30 | 유기전계 발광 디스플레이 장치 및 그 구동방법 |
KR10-2008-0040472 | 2008-04-30 |
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JP2009271500A JP2009271500A (ja) | 2009-11-19 |
JP4913119B2 true JP4913119B2 (ja) | 2012-04-11 |
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JP (1) | JP4913119B2 (ja) |
KR (1) | KR101338312B1 (ja) |
CN (1) | CN101572054B (ja) |
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CN103400548B (zh) * | 2013-07-31 | 2016-03-16 | 京东方科技集团股份有限公司 | 像素驱动电路及其驱动方法、显示装置 |
CN103489404B (zh) * | 2013-09-30 | 2016-08-17 | 京东方科技集团股份有限公司 | 像素单元、像素电路及其驱动方法 |
CN103531148B (zh) * | 2013-10-31 | 2015-07-08 | 京东方科技集团股份有限公司 | 一种交流驱动的像素电路、驱动方法及显示装置 |
CN103927991A (zh) * | 2014-04-29 | 2014-07-16 | 何东阳 | 一种amoled像素电路 |
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KR101222541B1 (ko) * | 2005-06-30 | 2013-01-16 | 엘지디스플레이 주식회사 | 전계발광소자 |
US7456580B2 (en) | 2005-06-30 | 2008-11-25 | Lg Display Co., Ltd. | Light emitting device |
KR101363095B1 (ko) | 2007-03-20 | 2014-02-25 | 엘지디스플레이 주식회사 | 유기발광다이오드 표시장치와 그 구동방법 |
KR101352175B1 (ko) * | 2007-05-09 | 2014-01-16 | 엘지디스플레이 주식회사 | 유기발광다이오드 표시장치와 그 구동방법 |
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CN101572054A (zh) | 2009-11-04 |
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JP2009271500A (ja) | 2009-11-19 |
US8325113B2 (en) | 2012-12-04 |
KR20090114700A (ko) | 2009-11-04 |
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