JP5306155B2 - 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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- 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
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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]
- G09G3/3266—Details of drivers for scan electrodes
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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
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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
- 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
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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
- 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
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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
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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
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0233—Improving the luminance or brightness uniformity across the screen
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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
- G09G2320/10—Special adaptations of display systems for operation with variable images
- G09G2320/103—Detection of image changes, e.g. determination of an index representative of the image change
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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
- G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
- G09G2330/02—Details of power systems and of start or stop of display operation
- G09G2330/021—Power management, e.g. power saving
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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
- G09G2340/00—Aspects of display data processing
- G09G2340/04—Changes in size, position or resolution of an image
- G09G2340/0407—Resolution change, inclusive of the use of different resolutions for different screen areas
- G09G2340/0435—Change or adaptation of the frame rate of the video stream
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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
- G09G2360/00—Aspects of the architecture of display systems
- G09G2360/02—Graphics controller able to handle multiple formats, e.g. input or output formats
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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]
- G09G3/3275—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
Description
D1〜Dm:データ線
140:画素
130:画素部
S1〜Sn:走査線
E1〜En:発光制御線
110:走査駆動部
D1〜Dm:データ線
120:データ駆動部
110:走査駆動部
150:タイミング制御部
160:モード判別部
Claims (14)
- 動作制御信号に対応して低電力駆動モード又は一般の駆動モードであるか否かを判断し、判断されたモードに対応する制御信号を生成するモード判断部と、
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と同期されるよう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、
前記モード判断部から供給される前記低電力駆動モード又は前記一般の駆動モード制御信号に対応してフレーム周波数が変化されるように前記走査駆動部及びデータ駆動部を制御するタイミング制御部とを備え、
前記走査駆動部は、前記フレーム周波数の変化と関係なく、前記走査信号の幅を一定に維持し、前記フレーム周波数の変化に対応して、前記フレーム周波数が増大した場合には前記走査信号間の間隔を小さくし、前記フレーム周波数が低減した場合には前記走査信号間の間隔を大きくするように制御し、
一定時間に前記動作制御信号の供給がない場合に、前記モード判断部が現在表示される映像が静止画であると判断すると、前記走査信号間の間隔を大きくするように制御し、
前記フレーム周波数が変化してもユーザが認知できないように輝度及び色座標を一定に維持する
ことを特徴とする有機電界発光表示装置。 - 前記走査駆動部は、前記フレーム周波数の変化に対応して以前に供給された走査信号と現在供給される走査信号との間の間隔を調節する
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。 - 前記モード判断部は、一定時間に前記動作制御信号の供給がない時、前記低電力駆動モードに対応する低電力制御信号を前記タイミング制御部に供給し、その他の場合に前記一般の駆動モードに対応して一般の制御信号を前記タイミング制御部に供給する
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。 - 前記モード判断部は、前記一定時間に前記動作制御信号の供給がない時、現在表示される映像が静止画であるか、動画であるかを追加で判断し、前記静止画であると判断された場合にのみ前記低電力制御信号を前記タイミング制御部に供給する
ことを特徴とする請求項3に記載の有機電界発光表示装置。 - 前記タイミング制御部は、前記一般の制御信号が供給される時に第1フレーム周波数、前記低電力制御信号が供給される時に第2フレーム周波数で駆動されるように前記走査駆動部及びデータ駆動部を制御する
ことを特徴とする請求項3に記載の有機電界発光表示装置。 - 前記第1フレーム周波数は、前記第2フレーム周波数よりも高い周波数である
ことを特徴とする請求項5に記載の有機電界発光表示装置。 - 前記画素は、
有機発光ダイオードと、
前記有機発光ダイオードに供給される電流量を制御するための駆動トランジスタを具備する
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。 - 前記画素は、前記駆動トランジスタの閾値電圧を補償するために複数のトランジスタを更に具備する
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。 - 外部から供給される動作制御信号に対応してフレーム周波数を変化する第1段階と、
前記フレーム周波数と関係なく、走査信号の幅を一定に維持し、前記フレーム周波数の変化に対応して、前記フレーム周波数が増大した場合には前記走査信号間の間隔を小さくし、前記フレーム周波数が低減した場合には前記走査信号間の間隔を大きくする第2段階と、
前記走査信号に対応するようにデータ信号を供給する第3段階と、
前記データ信号に対応して画素のそれぞれで所定輝度の光を生成する第4段階とを有し、
一定時間に前記動作制御信号の供給がない場合に、現在表示される映像が静止画であれば、前記走査信号間の間隔を大きくするように制御し、
フレーム周波数が変化してもユーザが認知できないように輝度及び色座標を一定に維持する
ことを特徴とする有機電界発光表示装置の駆動方法。 - 第2段階では前記フレーム周波数に対応して前記走査信号間の間隔を調節する
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。 - 前記第1段階は、
前記動作制御信号を用いて一般の駆動モードであるか、低電力駆動モードであるかを判別する段階と、
前記一般の駆動モードである場合に第1フレーム周波数に設定し、前記低電力駆動モードである場合には第2フレーム周波数に設定する段階とを具備する
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。 - 前記第1フレーム周波数は、前記第2フレーム周波数よりも高い周波数である
ことを特徴とする請求項11に記載の有機電界発光表示装置の駆動方法。 - 前記第1段階では、前記動作制御信号が一定時間入力されない時に前記低電力駆動モードであると判断し、その他の場合には前記一般の駆動モードであると判断する
ことを特徴とする請求項11に記載の有機電界発光表示装置の駆動方法。 - 前記第1段階では、前記動作制御信号が一定時間入力されない時に表示される映像が動画であるか、静止画であるかを追加で判断し、前記静止画であると判断された場合にのみ前記低電力駆動モードであると判断する
ことを特徴とする請求項13に記載の有機電界発光表示装置の駆動方法。
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KR1020090083930A KR101082167B1 (ko) | 2009-09-07 | 2009-09-07 | 유기전계발광 표시장치 및 그의 구동방법 |
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US8730226B2 (en) * | 2010-11-04 | 2014-05-20 | Scanvue Technologies, Llc | Thin-film transistor liquid-crystal display with variable frame frequency |
US9443485B2 (en) | 2010-11-04 | 2016-09-13 | Apple Inc. | Thin-film transistor liquid-crystal display with variable frame frequency |
KR101813192B1 (ko) * | 2011-05-31 | 2017-12-29 | 삼성디스플레이 주식회사 | 화소 및 이를 포함하는 표시장치, 및 그 구동방법 |
KR101992879B1 (ko) * | 2011-10-05 | 2019-06-26 | 엘지디스플레이 주식회사 | 유기 발광 다이오드 표시장치와 그 구동방법 |
KR20130135507A (ko) * | 2012-06-01 | 2013-12-11 | 삼성디스플레이 주식회사 | 스테이지 회로 및 이를 이용한 주사 구동부 |
KR20140024155A (ko) * | 2012-08-20 | 2014-02-28 | 삼성디스플레이 주식회사 | 화소 및 이를 이용한 유기전계발광 표시장치 |
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