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TW200816143A - Organic light emitting diode display and driving method thereof - Google Patents

Organic light emitting diode display and driving method thereof Download PDF

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Publication number
TW200816143A
TW200816143A TW096123879A TW96123879A TW200816143A TW 200816143 A TW200816143 A TW 200816143A TW 096123879 A TW096123879 A TW 096123879A TW 96123879 A TW96123879 A TW 96123879A TW 200816143 A TW200816143 A TW 200816143A
Authority
TW
Taiwan
Prior art keywords
organic light
voltage
emitting diode
data
pixels
Prior art date
Application number
TW096123879A
Other languages
English (en)
Other versions
TWI376664B (en
Inventor
In-Hwan Kim
Seung-Chan Byun
Jin-Hyoung Kim
Original Assignee
Lg Philips Lcd Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Lg Philips Lcd Co Ltd filed Critical Lg Philips Lcd Co Ltd
Publication of TW200816143A publication Critical patent/TW200816143A/zh
Application granted granted Critical
Publication of TWI376664B publication Critical patent/TWI376664B/zh

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Classifications

    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control 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
    • G09G3/22Control 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
    • G09G3/30Control 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
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control 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
    • G09G3/22Control 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
    • G09G3/30Control 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
    • G09G3/32Control 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]
    • G09G3/3208Control 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]
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control 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
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control 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
    • G09G3/22Control 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
    • G09G3/30Control 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
    • G09G3/32Control 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]
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control 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
    • G09G3/22Control 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
    • G09G3/30Control 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
    • G09G3/32Control 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]
    • G09G3/3208Control 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]
    • G09G3/3225Control 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
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00Command of the display device
    • G09G2310/02Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0243Details of the generation of driving signals
    • G09G2310/0245Clearing or presetting the whole screen independently of waveforms, e.g. on power-on
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00Command of the display device
    • G09G2310/02Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0243Details of the generation of driving signals
    • G09G2310/0251Precharge or discharge of pixel before applying new pixel voltage
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00Control of display operating conditions
    • G09G2320/02Improving the quality of display appearance
    • G09G2320/0219Reducing feedthrough effects in active matrix panels, i.e. voltage changes on the scan electrode influencing the pixel voltage due to capacitive coupling
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00Control of display operating conditions
    • G09G2320/02Improving the quality of display appearance
    • G09G2320/0233Improving the luminance or brightness uniformity across the screen
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00Control of display operating conditions
    • G09G2320/02Improving the quality of display appearance
    • G09G2320/0257Reduction of after-image effects
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control 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
    • G09G3/2092Details of a display terminals using a flat panel, the details relating to the control arrangement of the display terminal and to the interfaces thereto
    • G09G3/2096Details of the interface to the display terminal specific for a flat panel
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control 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
    • G09G3/22Control 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
    • G09G3/30Control 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
    • G09G3/32Control 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]
    • G09G3/3208Control 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]
    • G09G3/3275Details of drivers for data electrodes
    • G09G3/3291Details 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of El Displays (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Electroluminescent Light Sources (AREA)

Description

200816143 九、發明說明: 【發明所屬’之技術領域】 本發明係有關於一有機發光二極體顯示器,特別是 種在目箣δ孔框轉換到下一訊框之前移除充電於電晶 體閘電極之電壓的有機發光二極體顯示器及其驅動方 法0 【先前技術】
最近’有各種藉由降低重量與體積來減少陰極射線 官之缺點的平面顯示器裝置被發展出來。這些平面顯示 :裝置包含液晶顯示器(以下稱為“LCD”)、場發射顯示 f乂下稱為” fed,,)、電槳顯示(以下稱為” PDP,,)、以及 免教發光(以下稱為,,EL”)等顯示器裝置。 在這些平面顯示器之中,虹顯示器裝置是一稃 二:與電洞的復合而發射出一種榮光物質的自體 合::EL顯示器裝置主要被分類為—種使用無機 :物:::顯示器裝置以及-種以螢光材料的有機 口 機顯示器裝置。至今這種 調是一插目士 / ⑼不為裝置被 視角、决;壓驅動、自體發光、細薄外觀、寬 祝角、快逮反應速度、 見' 器。 M及间對比寺優點的後世代顯: 有祛EL頌示器裝置包 輪層、一笋井厚 ^ 包子注入層、一電 X先層、一電洞傳輪 其中,帝工、+ M及電洞〉主入 毛子,主入層置於陰極盥
一 %極之間。在有機E 7 200816143 示器裝置中,如果一預設電壓作用於陰極與陽極之間, 從陰極產生的一電子將經由電子注入層與電子傳輸層 向發光層移動,而且從陽極產生的一電洞將經由電洞注 入層與電洞傳輸層向發光層移動。因此,由電子傳輸層 與電洞傳輸層所提供的電子與電洞將於有機發光層復 合且產生光。 使用有機EL相關技術的有機發光二極體顯示器之 每一像素的電路結構如「第1圖」所示。 「第1圖」是一個等效電路圖用以表示相關技術的 有機發光二極體顯示器中之一像素。 參考「第1圖」,有機發光二極體顯示器的每一像 素包含一開關電晶體S_TR1、——儲存電容Cst、一有機 發光二極體OLED、以及一驅動電晶體D—TR1。其中, 開關電晶體S_TR1是藉由閘電路GL提供之掃描脈衝而 開啟以切換由資料電路DL提供之資料電壓。開關電晶 體S_TR1提供之資料電壓充電於儲存電容Cst之中。有 機發光二極體OLED由具有高電源電壓VDD之電源端 所提供之驅動電流而開啟發光。驅動電晶體D_TR1藉 由開關電晶體S_TR1之資料電壓或儲存電容Cst之充電 電壓來驅動有機發光二極體OLED。 開關電晶體S_TR1是一種N型金氧半導體(NMOS) 電晶體,具有一閘電極、一汲電極、以及一源電極。其 中,閘電極是連接到閘電路GL。汲電極連接到資料電 200816143 路DL。源電極通常連接到儲存電容Cst與驅動電晶體 D—TR1的閘電極。開關電晶體S—TR1是藉由一提供自 閘電路GL之掃描脈衝而開啟以將資料電路DL之資料 電壓給儲存電容Cst與驅動電晶體D_TR1。 儲存電容Cst之一端通常連接到開關電晶體S_TR1 與驅動電晶體D_TR1之閘電極,而儲存電容Cst之另一 端則接地。提供自開關電晶體S_TR1之資料電壓充電於 儲存電容Cst。當一提供自切換開關電晶體S—TR1之資 料電壓沒有作用於驅動電晶體D—TR1之閘電極時,儲 存電容Cst釋放出一放電電壓去維持該驅動電晶體 D_TR1之閘電壓。因此,雖然原提供自開關電晶體 S—TR1之資料電壓沒有提供,驅動電晶體D—TR1仍能 藉忐儲存電容Cst之放電電壓維持開啟狀態,並持續一 段因儲存電容Cst所保持的維持週期。其中,當提供自 開關電晶體S_TR1之資料電壓沒有作用於驅動電晶體 D—TR1之閘電極時,驅動電晶體D—TR1的閘電壓貝U ^亭 止。 有機發光二極體OLED具有一個陽極與一個陰極。 在此,陽極連接到一提供高電源電壓VDD之電源端。 陰極連接到驅動電晶體D_TR1之汲電極。 驅動電晶體D_TR1是一種N型金氧半導體(NMOS) 電晶體,具有一閘電極、一汲電極、以及一源電極。其 中,閘電極通常連接到開關電晶體S_TR1之源電極與開 9 200816143 關電晶體S_TR1。汲電極連接到有機發光二極體OLED 之陰極。源電極則接地。驅動電晶體D_TR1藉由開關 電晶體S_TR1所提供給閘電極之資料電壓而開啟,或藉 由提供給閘電極之開關電晶體S_TR1之放電電壓而開 啟,該放電電壓用以將流入有機發光二極體OLED之驅 動電流切換至接地點。藉由這樣的方式,流入有機發光 二極體OLED之驅動電流被切換到接地點,因此有機發 光二極體OLED猎者由南電源電壓VDD所產生的驅動 電流而發光。 在相關技術的有機發光二極體顯示器中包含著具 有上述等效電路的像素,雖然由於直流電壓作用於閘電 極,使得驅動電晶體D_TR1從開啟之狀態變換成一關 閉狀態,閘放電電壓依然維持著。因此,產生一個問題 就是驅動電晶體D_TR1會退化。特別在相關技術的有 機發光二極體顯示器中,因為一充電於驅動電晶體 D一TR1之閘電極的電壓從先前訊框維持到目前訊框,所 以在螢幕上產生殘像。 【發明内容】 本發明是為了去解決上述問題。因此,本發明之目 的是提供一種有機發光二極體顯示器及其驅動方法,用 以在目前訊框變換到下一訊框之前移除一充電於驅動 電晶體閘電極之電壓。 本發明之另一目的是提供一種有機發光二極體顯 10 200816143 示器及其驅動方法,用以在一訊框下移除一驅動電晶體 閘放電電壓而防止驅動電晶體退化。 本發明之又一目的是提供一種有機發光二極體顯 示器及其驅動方法,用以在目前訊框變換到下一訊框之 前移除一驅動電晶體閘放電電壓而消除螢幕殘餘影像。 為了達到本發明的這些目的,根據本發明之實施例 之有機發光二極體顯示器包括一顯示器面板,其具有複 數個包含一有機發光二極體之像素;一計時控制器,其 控制輸入影像資料之驅動時間與控制更新電壓之提供 時間;一個資料驅動器,其將計時控制器輸出給目前訊 框的數位資料轉換成類比資料電壓,並將其提供給像 素,之後再提供更新電壓給藉由計時控制器的控制所選 擇出的像素;一個閘驅動器,其主要提供一個掃描脈衝 給目前訊框第一水平週期以選擇要提供資料的像素,之 後再提供一個掃描脈衝給目前訊框第二水平週期『從與 計時控制器的控制一致的像素之中去選擇被提供更新 電壓的像素』。 更新電壓為一零伏特電壓。 更新電壓為一負電壓。 - 計時控制器產生更新電壓且將其作用於資料驅動 器。 本發明之有機發光二極體顯示器更包含一更新電 壓產生器,其更新電壓為一電源電壓作用所產生。 11 200816143 :時控制器提供—遮蔽訊號 一水平週期與第二水平週期。 勤的以调整弟 第—水平週期與第二水平週士 第一水平週期盥第_ …半水平週期。 開驅動器於tr;=期,。 所有在顯示器面板_脈心選擇 閘驅動器於第— 少-個在顯示器二不提供-掃描脈衝給至 :動有機發光二極體顯示器之 一具有稷數個包含-有機發光二極體之包含 面板,此方法包括產生—更新電壓像素的顯示器 衝於第一水平週期給目前訊框以谐要^ 共一掃描脈 素,將-輪入給目前訊框的數位 供貧料的像 ㈣並將其提供給藉*-掃描脈衝於V成ΖΓ資料 選擇出的像素;其次,提供 脱水平週期所 水平週期以選擇在像素之中被提二更=前訊框第二. :提供更新電I給藉由一掃描脈衝更:目,味 平週期所選出的像素。 衡於目則矾框第二水 更新;壓為-零伏特電屋。 ,更新電壓為一負電壓。 “ 方去中,第一水平週期鱼 半水平週期。 /、气—水平週期各為一 在本方去中,第一水平週 弟一水平週期不相 12 200816143 同。 在本方法中,所有在纟日二抑 平週期選擇被料更新^Γ面板上之像素於第二水 一射Ha 〃电壓之像素的步驟中藉由提供 抑^田脈衝而被選擇出來。 I本方/A中,於第二水平週期在選擇被提供更新+ 壓之像素的步驟中一掃 “、 示器面板上之像素。 卜W…至個在顯 【實施方式】 以I— +發明之平面顯示器 合圖式詳細說明如τ。 &…、_方故將配 e料3」為根據本發明實施例的-有機發光二極 版續不态之結構圖。 10。包含一顯干二」本’x明之有機發光二極體顯示器 ΰ _不态面板110、一 Ρ>阿、+ , 計時控制器、13〇、一資物。更1:昼產生器12〇、-150。_ 胃#動5 140、以及—閘驅動器 」、中’1源電壓作用於更新電壓產生器、12〇以 麗二=㈣除驅動電晶體D-TR1之間放電電 門且=30控制輸入系統之影像資料的驅動時 ^從計!^控!"更新電壓的提供時間。資料驅動器⑽ 、文次、才工"彳态130輪入到目前訊框之·數位資料轉換為 :頁比貝料電壓輕其提供給顯示器面板11G之像素,、: iim電壓產生器m所提供之更新電壓給顯示器面 與計時控制器m之資料驅動控制訊號DDc 13 200816143 j的像素。開驅動器15Q於-半水平週期中連續地為 目±丽訊框提供—掃描脈衝給閘電路GL1到GLn,然後連 續地於一半水平週期根據計時控制器13 0之閘驅動控制 訊號而提供—掃描脈衝給閘電路GL5到GLn。所控制。 裣數個貝料電路DL1到DLm與複數個閘電路Gy -到GLn彼此為垂直交叉。包含有機發光二極體〇led •之像素設置於交叉部份。「第Ϊ圖」之等效電路於是形 $ 成於像素上。 更新電壓產生器120受到電源電壓作用而產生一更 新電壓去移除驅動電晶體D—TR1 4閘放電電壓,從而 f其提供給資料驅動器14〇。其中,更新電壓產生器12〇 促供一令伏特更新電壓或一負更新電壓。這是因為只有 =直流電壓被提供給驅動電晶體d—tri之閘電極,一 零伏特更新電壓或一負更新電壓被提供給驅動電晶體 • D一TIU以移除驅動電晶體D—加之閘放電電壓。另一 方面’在本發明中,更新電壓產生器120產生—更新電 、壓。然而,它的應用不只限於此。例如,計時控制器13〇 -可以產生一更新電壓而將其提供給資料驅動器140。 。十日4制益130被-系統如電視機或電腦螢幕等輸 入一影像資料而提供-數位資料給資料驅動器14〇,且 同日守控制資料之驅動。 另外’计日守控制器130運用與系統時間訊號CLK -致之系統水平/垂直同步訊號H與v產生—資料驅動 14 200816143 控制訊號脈、-更新控制訊號Rcs、—閑驅動控制訊 號GDC、以及一遮蔽訊MMKS。資料驅動控制訊號ddc 與更新控制訊號rcs提供給資料驅動器m驅動控 制訊號GDC與遮蔽訊號MKS提供給閑驅動哭15〇。其 中,資料I鳴控制訊號獄包含1源偏料鐘s. 一電源料㈣SSP、以及—電源輪出許可訊號S0E 等。閘驅動控制訊號GDC包含1起始_⑽盘__ 閑輸出許可訊號GOE等。特別的是,更新控制訊號奶 控制資料驅動H 14Q.之更新電壓的提供時間。遮蔽訊號 MKS控制掃描脈衝的水平週期。 資料驅動器140回應一由計時控制器13〇所提供之 資料驅動控制訊號獄以將—由計時控制器130所輸 入之數位資料轉換成一類比資料電星並將其提供給顯 不為面板110之像素。其中,資料驅動器、14〇在一更新 電壓產生12G所提供之更新電壓的基礎下將—經由計 時控制器13 G所提供之數位f料轉換成_類比資料電摩 並將其提供給資料電路DL1到DLm。其中,_領比二 料電壓係實現為顯示器面板11〇的有機:極: OLED上之灰階。 "^ —貢料驅動器14G提供—f料給目前訊框,缺後為了 目前訊框而提供—更新電壓給藉由計時控制器130之更 新控制訊號RCS所選擇出的顯示器面板…上之像素。 參考「第3圖」,資料驅動器⑽提供—資料^ 15 200816143 由知^田脈衝而選擇出的像 M ,、在此,於目前訊框的半水 千週期,閘驅動器15〇連 〇Ll 5ι, ρτ , ⑺地、知插脈衝給閘電路 就提供二果提供一資料到像素,則資料驅動器140 ,共—更新電壓到由掃描脈衝所選擇出之像素。在 前訊框的半水平週期,閘驅動器…連續地提 ==給閘電路GL5到GLn。其中,更新電壓被提 供到驅動電晶體D TR1之π & ,— 之閘笔極以除去目前訊框之閘 π 士 毛月月匕夕句防止驅動電晶體的退化並 同恰除去螢幕的殘餘影像。
閘驅動器15 0幺γ Q X 為了目則訊框要提供資料給閘電路 到GLn’所以其連續地提供—掃描脈衝,然後再回 閘驅動控制訊號GDC與「第3圖」所示之計時控制 -bo所*供之閘偏移時鐘Gsc以連續地提供一更新 用之掃描脈衝給閘電路GL5到GLn。如此,閘驅動器 \50連續地於—半水平週期提供-掃描脈衝,,然後再連 續地於—半水平週期根據計時控制ϋ 130之遮蔽訊號 MKS提供-掃描脈衝。在此,如果提供—資料,然後提 供:更新電壓給目前訊框,則資料之灰階值將實現於顯 :态面板110之每一像素,如「第4圖」所示。特別的 是,被提供更新電墨的區域,其資料灰階值將無法實現 並且為一顯示黑暗的區域。 另一方面,在本發明中,閘驅動器150於一半水平 週期藉由提供一掃描脈衝來選擇被提供資料之像素,以 16 200816143 二:衣’水平週期根據遮蔽訊號MKS提供一掃扩 更新電壓的像素。然而,-掃描二 分之- JC平=此。例如,間驅動器150可以藉由於三 像::週期提供-掃描脈衝來選擇被提供資料之 像素,亚且同時可以藉由於三分之十之 ::號_提供一掃描脈衝來選擇被提二據: 例如,更靳夕匕的應用不只限於此。 GL1到GLn。 ^地被攸供於所有閘電路 根據以上所述,本發搓 一更新命羅仏__ 月挺彳,、—育料電壓,然後提供 壓“士果'::5fl框去移除驅動電晶體之間放電電 、'、°果,本發明能夠防止驅動電S 幕的殘影。 勒书日日肢退化以及移除螢
I 非用f本發明以前述之較佳實施例揭露如上,缺立並 非用以限定本發明,任何熟 …、卫 發明之精神和範圍内,當可作4:= 脫離本 本發明之專利保護範圍須視;'說午明之查更所動附與因此 範圍所界定者為準。 哥所附之申請專利 【圖式簡單說明】 極體=!!本發明'之包含於相關技術之有機發光二 之中的-像素之等效電路圖; 17 200816143 第2圖係為本發明之有機發光二極體顯示器之結構 圖; 第3圖係為本發明之有機發光二極體顯示器的操作 特徵示意圖;以及 第4圖係為本發明之有機發光二極體顯示器的灰階 示意圖。 【主要元件符號說明】 巍 100.............有機發光二極體顯示器 110........... ,.顯示器面板 120............ ..更新電壓產生器 130............... ..計時控制器 140........... ..貧料驅動為 150........... ..閘驅動器 GL1 〜GLn ·. 閘電路 DL1 〜DLm · ..資料電路 ® S TR1....... ...開關電晶體 D TR1........ ....驅動電晶體 Cst·.·......... ....儲存電容 OLED...... ...有機發光二極體 VDD......... ....高電源電壓 DDC........... ....資料驅動控制訊號 RCS......... ...更新控制訊號 MKS......... ....遮蔽訊號 18 200816143 GDC............閘驅動控制訊號 Η ............系統水平同步訊號 V ................系統垂直同步訊號 CLK............系統時間訊號 SSC............電源偏移時鐘 SSP.............電源起始脈衝 SOE.....…電源輸出許可訊號 GSC............閘偏移時鐘 GSP............閘起始脈衝 GOE…………閘輸出許可訊號
19

Claims (1)

  1. 200816143 十、申請專利範圍: 】·-種有機發光二極體顯示器 —顯示器面板,該顯亍哭而. 有機發光二極體之像素:〜面板具有複數.包含— 料之i:時控制器’該計時控制器控制-輪d 抖之驅動,間與控制—更新電壓之提供時:〜像資 貪料驅動器,該資料驅 輻出給目前訊框之—數位 /十盼控制器 壓且將其提供給該萨 、"’ τ、、成一類比資料電 給根據該計時^哭 素’然後提供該更新電壓 素;以及^之控制而選擇出之該複數個像 -閘驅動器,該閘驅動器於目前訊框 週期提供—掃描脈㈣該# = 之像素,然後再於目前訊框 、反叔么貝枓 計時控制器之控制而提供該掃描脈衝以 數個將被提供該更新電壓之像素。 '又 2.如申請專利範圍第1項所述之有機發光二極斷 器,其中該更新電塵為零伏特電塵。 ^下 3·如申請專利範圍第1項所述之有機發光二極體顯示 器,其中該更新電壓為負電壓。 … 4·如申4專利乾圍第1項所述之有機發光二極體顯示 器,其中該計時控制器產生該更新電屢並將該更新電 壓提供給該資料驅動器。 20 200816143 5.如申請專利笳囹 ^ . . ® 項所述之有機發光二極體~ - -,其中更包含_更_產生 广- 器接收一電源命厭r/太丄 更新琶壓產生 摩电反以產生該更新電壓。 6·如申請專利笳囹笙 弟項所述之有機發光二極體磲- ^其中該計時控制器提供一遮號 =不 正該弟—水平週期與該第二水平週期。 7·:申:中6項所述之有機發光二極體顯示 梢Γ州_帛,撕別為半 8·如申請專利範圍第 哭甘击士卸乐6項所述之有機發光二極體顯亍 的八中5亥呆—水平週期與該第二水平週期不相因 9· 專利範圍第1項所述之有機發光二極體顯示。 二選中擇動器於該第二水平週期提供該掃福: 衝&擇在相㈣面板上之所相 10·如申請專利範圍第!項所述之有機 ^素/ 突、^ ^ 巧俄知尤—極體顯示 印、、中该閘驅動器於該第 描脈衝給至少一個在兮顯不何供该掃 像素。 们在相不盗面板上之該複數個 Π. —種驅動有機發光二極體顯示器之方法,包括· 產生該更新電壓;- · 、於目前訊框之第-水平週期提供掃描脈衡 擇被&供資料之複數個像素; 、 將輸入給該目前訊框之數位資料轉換成類比資 21 816143 料電壓並將其提供淡 — 描脈衝所選擇出之該複:個7^ 再於目前訊框之哕笛一, 以從該複數個像平週期提供掃描脈衝 像素,·以及 擇破提供該更新電壓之該 12. 仏斧由Λ框之&二水平週期提供該更新電堡 ::由该择描脈衝所選擇出之該像素。 :專利範圍第u項所述 壓。 〃中該更新電壓為零伏特電 1 如申請專利範圍帛U項 極體顯示器之方法,動有機發光二 14 月乾圍第11項所述之驅動有機笋光一 極體顯示器之方法 勤有誠表先- 水平週期分別為半水平水平週期與該第二 15.:3專範圍第11項所述之-動有機發光二 才5 頭不态之方法,i 水平週期不相同。卜水平週期與該第二 16如申請專利範圍第n項所述之驅動有機發光二 ^體^不器之方法,其中所有在該顯示器面板上之 : 擇被提供該更新電壓之該複數 口:素的步驟中於該第二水平週期藉由提 才田脈衝而被選擇。 22 200816143 17.專:“'圍第11項所述之驅動有機發光-—之方法,其t於該第 被提供該更新電 描脈衝不提供給至少—個在該_ 複數個像素。 败上之Θ
    23
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