TWI419115B - 主動矩陣顯示驅動控制系統 - Google Patents

主動矩陣顯示驅動控制系統 Download PDF

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TWI419115B
TWI419115B TW095133281A TW95133281A TWI419115B TW I419115 B TWI419115 B TW I419115B TW 095133281 A TW095133281 A TW 095133281A TW 95133281 A TW95133281 A TW 95133281A TW I419115 B TWI419115 B TW I419115B
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display
active matrix
voltage
current
power supply
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TW200727246A (en
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史密斯 伊旺
洛特利 保羅
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劍橋顯示科技有限公司
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    • 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]
    • 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
    • G09G3/3233Control 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
    • 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]
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B33/00Electroluminescent light sources
    • H05B33/12Light sources with substantially two-dimensional radiating surfaces
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00Aspects of the constitution of display devices
    • G09G2300/08Active 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
    • G09G2300/0809Several active elements per pixel in active matrix panels
    • G09G2300/0842Several active elements per pixel in active matrix panels forming a memory circuit, e.g. a dynamic memory with one capacitor
    • 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
    • G09G2310/0264Details of driving circuits
    • G09G2310/027Details of drivers for data electrodes, the drivers handling digital grey scale data, e.g. use of D/A converters
    • 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
    • G09G2320/029Improving the quality of display appearance by monitoring one or more pixels in the display panel, e.g. by monitoring a fixed reference pixel
    • 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
    • G09G2320/04Maintaining the quality of display appearance
    • G09G2320/043Preventing or counteracting the effects of ageing
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/02Details of power systems and of start or stop of display operation
    • G09G2330/021Power management, e.g. power saving

Description

主動矩陣顯示驅動控制系統
本發明係關於用於驅動一主動矩陣顯示器、特定而言一具有減小之電力消耗之有機發光二極體(OLED)顯示器之方法、設備、及電腦程式碼。
使用OLED製造之顯示器提供大量勝過LCD及其它平面面板技術之優點。其明亮、色彩豐富、轉換迅速(較之LCD),提供一寬廣視角且容易且便宜地製造於各種基板上。有機(此處包含金屬有機化合物)LED可使用包括聚合物、小分子及樹枝狀聚合物之材料來製造,其色彩範圍取決於使用之材料。聚合物基有機LED之實例係闡述於WO 90/13148、WO 95/06400及WO 99/48160中;樹枝狀聚合物基材料之實例係闡述於WO 99/21935及WO 02/067343中,且所謂小分子基裝置之實例係闡述於US 4,539,507中。
一典型之OLED裝置包括兩層有機材料,其中之一者係一發光材料層(例如一發光聚合物(LEP),齊聚物或一發光低分子量材料),其中之另一者係一孔傳送材料層(例如一聚噻酚衍生物或一聚苯胺衍生物。
有機LED可採取一像素矩陣之形式沈積於一基板上以形成一單一或多色彩之像素化顯示器。一多色彩顯示器可藉由使用紅色、綠色、及藍色發光像素組群來構造。所謂主動矩陣(AM)顯示器具有一伴隨每一像素之記憶體元件,典型地係一儲存電容器及一電晶體,而被動矩陣顯示器卻無此種記憶體元件,且替代地係重複掃描以給出一穩定圖像之印象。聚合物及小分子主動矩陣顯示驅動器之實例可分別於WO 99/42983及EP 0,717,446A中找到。
圖1a顯示此種實例性OLED主動矩陣像素電路150。為該顯示器之每一像素提供一電路150,且提供接地152、Vs s 154、列選擇124及行資料126匯流排,以互連該等像素。因此每一像素具有一電力及接地連接,且每一列像素具有一共同列選擇線路124且每一行像素具有一共同資料線路126。
每一像素具有一有機LED 152,其在接地與電力線路152及154之間與驅動器電晶體158串聯連接。驅動器電晶體158之一閘極連接159耦接至一儲存電容器120,且一控制電晶體122在列選擇線路124之控制下將閘極159耦接至行資料線路126。電晶體122係一當列選擇線路124被啟動時將行資料線路126連接至閘極159及電容器120之薄膜場效電晶體(FET)開關。因此當開關122導通時,行資料線路126上之一電壓可被儲存於一電容器120上。該電壓被保持於電容器上達至少訊框更新期間,此係因至驅動器電晶體158之閘極連接的相對高阻抗及處於其"關斷"狀態之開關電晶體122的相對高阻抗。
驅動器電晶體158典型地係一FET電晶體且傳遞一相依於電晶體之閘極電壓小於一臨限電壓之(汲極-源極)電流。因此閘極節點159處之電壓控制穿過OLED 152之電流,且因此控制該OLED之亮度。
圖1a之電壓控制式電路受困於許多缺點,且一些解決此等缺點之方法係闡述於申請者之WO03/038790中。
圖1b(摘自WO03/038790)顯示一解決此等問題之電流控制像素驅動器電路160之一實例。於此電路中,藉由使用一參考電流槽(reference current sink)162為OLED驅動器電晶體158設定一汲極源極電流,並記憶此汲極源極電流所需之驅動器電晶體閘極電壓,來設定穿過一OLED 152之電流。因此,OLED 152之亮度係由流入參考電流槽162之電流Icol 來決定,其較佳地係可針對正定址之像素而根據需要來調整及設定。此外,一另一開關式電晶體164連接於驅動電晶體158與OLED 152之間。一般而言,為每一個行資料線路提供一個電流槽162。
自該等實例可知一主動矩陣像素電路通常包括一與一電致發光顯示元件串聯之薄膜(驅動)電晶體(TFT)。
現參照圖2a,其顯示一主動矩陣像素電路之一FET TFT驅動器電晶體之汲極特性200。圖中顯示一組曲線202、204、206、208,其每一條皆圖解闡釋具有汲極源極電壓FET之汲極電流對應於一特定閘極源極電壓之變化。在一初始非線性部分之後,該等曲線變得大致平坦,且FET於所謂之飽和區內運作。隨著閘極-源極電壓之增大,該飽和汲極電流亦增大,於一臨限閘極源極電壓VT 下,該汲極電流係大致為0。虛線230指示該等曲線之初始的非線性部分及飽和區之間的區隔。對每一組曲線202、204、206、208而言,存在指示在該等曲線之初始的非線性部分及飽 和區之間的點之臨限值點VT (202)、VT (204)、VT (206)、VT (208)。VT 之典型值係於1V至6V之間。廣義而言,FET用作一電壓控制電流限制器。
圖2b顯示一典型之主動矩陣像素電路之一驅動部分240。一PMOS驅動器FET 242在一接地線路248與一負電力線路Vss 246之間與一有機發光二極體244串聯連接。
自圖2b之電路應瞭解,對於一既定OLED驅動電流,Vss 越大,驅動器電晶體242中之過量(廢)功率消耗越大。因此較佳應盡可能減小Vss以減小該過量消耗功率。然而自圖2a可瞭解,存在一限制(如虛線230所指示),低於該限制無法減小Vss ,此限制係由最大可用Vgs 及所需OLED驅動電壓來決定。
於一主動矩陣驅動器中,多種因素有助於增大一AM OLED顯示器之供電電壓使其高於一既定時間之必需值。原則上,一供電電壓可能僅需比所需電壓高~0.5V即可驅動最高電壓OLED(對於聚合物為~4V、對於小分子及磷光系統為~7V)。然而實務中,該供電需足以將驅動器TFT保持於飽和中,且擁有足夠值開銷以處理OLED臨限電壓隨時間之增加,該增加對於小分子可導致高達14V之供電電壓。此額外電壓落在整個該驅動器TFT上,增大(於該給出之實例中係加倍)該TFT之電力消耗及強度且因增強之場下降及加熱而使TFT承受應力。吾人先前已於WO03/107313中闡述某些用於解決此等難題之技術。
根據本發明,提供一種減小一主動矩陣電致發光顯示器之電力消耗之方法,該方法包括:控制至該顯示器之一電源電壓;及監視至該顯示器之一電源電流;且其中該控制進一步包括逐漸減小該等電源電壓,直至該電源電流之減小大於一臨限值。
於實施例中,該方法提供顯示器之增強效率並減小驅動薄膜電晶體上之應力。此亦幫助減小臨限電壓隨時間之偏移。因此,廣義而言,該方法之實施例提供減小之電力消耗及/或增加之顯示器使用壽命。
該電流臨限值可係一絕對電流值臨限或一相對臨限,例如一被確定為(例如)一對於供電電壓之小變化大致恆定之電流值飽和電流百分比(例如90%)。另一選擇係,可採用供應電流減少比率之形式定義該臨限值,亦即,例如,供電電流因供電電壓之逐步減小之變化百分比。於一進一步之替代方案中,一主動矩陣像素(驅動電晶體及電致發光顯示元件)之一響應曲線可儲存於(例如)一非揮發性記憶體中,且該臨限值可由此一特性曲線上一位置決定,而該特性曲線可依次由所監視電源電流決定。
較佳地,該監視及控制將該主動矩陣顯示器維持於一運作區域,於該區域中一最高受驅動驅動器電晶體(亦即一具有最大驅動之驅動器電晶體)恰好處於飽和內。較佳地,大致連續地進行該監視及控制,例如於一電腦程式控制之回饋環路中。
若該主動矩陣顯示器係一具有至少兩個且較佳三個不同色彩之子像素之多色彩顯示器,可為每個子像素提供一不同之單獨供電線路以便可大致獨立地控制不同子像素之電源。此係有利,因為通常而言,不同之色彩子像素具有不同之臨限電壓且藉由自單獨之供電線路驅動它們可為每一子像素提供單獨之最佳化。此外或另一選擇係,給該顯示器之不同空間分離區域提供其自身各自之供電線路以達成沿上述線路之單獨各自電源控制。此在例如顯示器之不同區域大致專用於不同任務時可係有利。
於實施例中,該方法亦控制該顯示器之一個或多個像素之驅動位準。在增加一個或多個像素之驅動位準(其原本可能被帶出飽和)以做補償之前提下,此允許電源電壓之進一步減小。
於一相關態樣中,本發明為一主動矩陣電致發光顯示器驅動器提供一控制器,該顯示器具有複數個像素,每個像素帶有一電致發光顯示元件及一相關聯驅動電晶體,該顯示器具有一供電線路以為該等像素之驅動器電晶體供電;該驅動器包括一像素資料驅動器以驅動該等帶有資料之顯示像素供進行顯示、一可控制電壓電源以為該供電線路提供一電源、及一電流感測器以感測該供電線路中之一電流;該控制器包括:一用於該電流感測器之電流感測輸入;一用於該可控制電源之電壓控制輸出;及一電壓控制器,其響應於一來自該電流感測輸入之電流感測信號給該電壓控制輸出提供一電壓控制信號。
較佳地,該電壓控制器經組態以調節電源控制信號,以便將該感測電流逐漸減小至一臨限值點,且隨後調節該控制信號,以將該感測電流維持於該臨限值點之區域內。一般而言,該電源電壓係根據該主動矩陣顯示器之一接地線路決定,然而原則上其亦可根據某些其它供電線路決定。該驅動器可視需要包含一電壓感測器以感測該電源電壓並為該控制器提供一輸入,該輸入可用於(例如)幫助決定該顯示器之一運作點。於此情況中,該控制輸出亦可響應於該感測電源電壓。
如上文所提及,該顯示器可具有複數個供電線路,其驅動該顯示器之不同部分,例如該顯示器之不同子像素或不同空間分離區域,於此情況中,該控制器(或單獨控制器)可控制至每一單獨供電線路之電源電壓。如上所述,可視需要配合電壓控制信號調節該像素驅動資料,特定而言以補償(最用力或最高被驅動驅動電晶體)電源電壓之減少。
本發明進一步提供一主動矩陣電致發光顯示器驅動器,其包含與上述像素資料驅動器、可控電壓電源及電流感測器組合之上述控制器。
於本發明之上述所有態樣中,該電致發光顯示裝置較佳地包括一有機發光二極體基之顯示器,例如一小分子、聚合物及/或樹枝狀聚合物基顯示器。
於另一態樣中,本發明提供一如請求項18之主動矩陣OLED,其中每個該像素包括至少不同色彩之第一及第二子像素,且其中該兩個部分各自包括該等第一及第二子像素。
本發明進一步提供一攜載處理器控制碼之載體媒介以執行上述方法及顯示器驅動器。此碼可包括習用程式碼,例如一諸如C之習用程式化語言(解譯或編譯)中之源、目標或可執行碼,或匯編碼,用於建立或控制一ASIC(專用積體電路)或FPGA(場可程式化閘陣列)之碼,或用於一諸如Verilog(商標)或VHDL(極高速積體電路硬體描述語言)之硬體描述語言之碼。此碼可分佈於複數個耦接組件之間。該載體媒介可包括任一習用儲存媒介,例如一磁碟或程式化記憶體(例如諸如Flash RAM或ROM等韌體),或一諸如一光學或電信號載體之資料載體。
廣義而言,吾人將闡釋一種藉助供電電壓之主動監視及調節來減小一主動矩陣OLED顯示器之電力消耗之技術。概括而言,進行電源電壓之測試減小且監視所汲取電流。電流開始顯著下降時之電壓係最高被驅動TFT恰好處於飽和內之點。若該供電電壓隨後被保持於該點,則在供電電壓中無需為OLED老化(及/或溫度效應)及/或可能之TFT過程/特性變化留出額外裕度。於實施例中,該主動供應監視隨時間自動地對其予以補償,從而導致TFT上應力之降低及電力消耗之減小。
於某些較佳之實施例中,藉由在紅色、綠色及藍色子像素供電線路上提供單獨之監視及調節來增強此等優點。此係因為每種色彩之運作電壓可顯著不同-例如一紅色子像素可能需要一3.6 V之驅動電壓,而一綠色子像素可能需要4.2 V且一藍色子像素可能需要5.15 V,於此情況中,假若僅使用一單一供電線路,則可能需要一至少6.15 V(對於驅動器電晶體順應性及其它損耗,考慮1 V之額外開銷)之電源電壓。另一選擇係,若該等子像素色彩中之兩者具有一類似之IV特性(例如紅色及綠色子像素)且僅一者不同(例如藍色子像素),則可提供兩個而非三個子像素電源。此可(有時顯著)簡化顯示器玻璃(基板)上之電極線路路由。
此外或另一選擇係,可在其中峰值發光且因此驅動位準可於該顯示器之不同區域之間顯著(且系統地)變化之應用例中分別供電給及監視該顯示器之子部分,從而達成進一步之節約。
除以上技術外,亦可藉由增加對應之閘極電壓作為回應來進一步降低供電電壓並補償某些驅動電晶體上之較低OLED驅動電流。較佳地,此係藉助關於驅動電晶體之(平均)電效能之知識來完成,以便可使用此資訊(實際上為一圖表)來決定補償一特定電源電壓減小所需之閘極電壓增加。此等特性可(例如)儲存於該驅動器中之非揮發性記憶體內。
圖3顯示一用於一主動矩陣顯示器302之一顯示器驅動器之方塊圖300,該顯示器驅動器經組態以根據該可用主動矩陣像素驅動電壓來控制Vs s 以提高該顯示器加驅動器組合之功率效率。
於圖3中,主動矩陣顯示器302具有每一個皆連接至內部各自之列及行線路306、310之複數個列電極304a-e及複數個行電極308a-e,其中為清晰起見僅顯示兩個。亦提供電源(Vs s )312與接地318連接,其亦連接至各自之內部導電跡線314及316以給該顯示其之像素供電。為清晰起見,圖解闡釋一單個像素320,其如圖所示連接至Vs s 、接地、列、及行線路314、316、306及310。應瞭解,於實務中通常提供複數個此等像素,但並非必需,其佈置於一矩形網格中且由列及行電極304、308定址。主動矩陣像素320可包括任何習用主動矩陣像素驅動器電路。
於運作中,藉由適當地驅動列電極304依次選擇主動矩陣顯示器302之每一列且對於每一列,藉由以亮度資料驅動較佳地同時行電極308來設定一列中每一像素之亮度。此亮度資料如上所述可包括一電流或電壓中之一者。一旦已設定一列中像素之亮度,可選擇下一列且重複該過程,主動矩陣像素包含一記憶體元件,通常係一電容器,以便在即使未被選擇時保持該列照亮。一旦資料被寫入整個顯示器,僅需以像素之亮度變化更新該顯示器。
該顯示器之電力由一電池324及一電源單元322提供,以提供一經調節之Vs s 輸出328。電源322具有一電壓控制輸入326以便控制輸出328上之電壓。較佳地,電源322係一具有典型於一微秒規模上快速控制輸出電壓328之開關模式電源,其中該電源以一1 MHz或更大之轉換頻率運作。一開關模式電源之使用亦可方便一低電池電壓之使用,該電壓可被上升至所需之Vs s 位準,從而有助於與(例如)低電壓消耗電子裝置之相容。
列選擇驅動器330根據一控制輸入332驅動列選擇電極304。同樣,行資料驅動器334響應一資料輸入336來驅動行電極308。於圖解闡釋之實施例中,每一行電極係由一可調恆定電流發生器340驅動,依次由一耦接至輸入336之數位-類比轉換器338來控制。為清晰起見,僅顯示一個此種恆定電流發生器。
恆定電流發生器340具有一電流輸出344以便發出或汲入一大致恆定電流。恆定電流發生器340連接至一電源驅動Vd r i v e 342,其可等於且連接至Vs s 或其可大於(此處,負於)Vs s 以便允許較Vs s 更用力地驅動主動矩陣像素320。用於Vd r i v e 之電壓可由(例如)一來自電源單元322之單獨輸出提供。
圖3中圖解闡釋之顯示器驅動器之實施例顯示一電流控制主動矩陣顯示器,其中一行電極電流設定一像素亮度。應理解,亦可藉由將電壓而非電流驅動器用於行資料驅動器334來使用一其中藉由一行線路上之電壓設定一像素亮度之電壓控制主動矩陣顯示器。
列選擇驅動器330之控制輸入332及行資料驅動器334之資料輸入336兩者皆由顯示器驅動邏輯電路346驅動,於某些實施例中該顯示器驅動邏輯電路包括一微處理器。顯示器驅動邏輯346藉由一時鐘348定時,且於圖解闡釋之實施例中,其具有對一訊框儲存器350之存取。用來顯示在顯示器302上之像素亮度及/或色彩資料藉助資料匯流排352被寫入顯示驅動邏輯346及/或訊框儲存器352。
該顯示器驅動邏輯具有一自一電流感測裝置354之輸出驅動之感測輸入356。其可包括(例如)一經組態以感測穿過一電阻器之電壓降之類比-數位轉換器。其用來監視由顯示器302自電源322之輸出328汲取之電流。於其中監視複數個供電線路之實施例中,可使用複數個轉換器或一多工轉換器。視需要(但未顯示於圖3中),亦可監視電源電壓Vs s
顯示器驅動邏輯346(其可藉由一於經儲存之程式控制下之處理器來構建或構建於硬體中或於兩者之一組合中)包含一電流感測單元358及一電力控制器360(於本實例中,兩者皆由儲存於非揮發性記憶體中之處理器控制碼來構建)。電流感測單元358於感測輸入356上輸入一電流信號,且電力控制器360輸出一電壓控制信號至電源單元322之輸入326,以響應所感測輸入電壓來控制電源電壓Vs s 。以下將參照圖4更詳細地闡述電力控制器之運作。
圖4顯示一可藉由一用於驅動一主動矩陣顯示器之顯示器驅動器之實施例中之電力控制器360執行之程序流程圖。一般性程序適合於電流程式化主動矩陣顯示器及電壓程式化主動矩陣顯示器。
參照圖4,於步驟S400中,顯示控制器346輸入一電流感測信號,然後其與一控制條件相比較(步驟S402)。該控制條件包括一確定電流是否已開始顯著下降之測試,且於一實施例中,可因此藉由確定自一先前測量後所感測電流中一變化(以絕對值或百分比形式)來實行,此係且隨後將其與一臨限值(例如2%、5%、10%)相比較。
若與控制條件之比較指示出可減小電源電壓而不顯著損失TFT驅動器電晶體之飽和度,例如因為電流中之變化小於一預定臨限值,則於步驟S404中減小Vs s ,且程序循環回步驟S400。然而,若與控制條件之比較指示出一個或多個具有最高驅動(應最接近於飽和)之TFT驅動器電晶體恰好離開飽和,則於步驟S406中增加Vs s 且程序重新循環回步驟S400。
熟習此項技術者將瞭解,可將各種條件用作控制條件,此取決於特定應用。於其中該主動矩陣顯示器具有(例如)用於該顯示器之兩個或多個單獨子像素之兩個或多個單獨供電線路之實施例中,圖4中顯示單獨之控制環路,且視情況因不同之控制條件而用於每個單獨供電線路。
無疑熟悉此項技術者將想到許多其它之有效替代形式。應理解,本發明並非侷限於所述之實施例並包括熟習此項技術者顯而易見的屬於隨附申請專利範圍之精神及範疇內之修改。
120...電容器
122...控制電晶體
124...列選擇線路
126...行資料線路
150...主動矩陣像素線路
152...有機OLED
154...Vs s /電力線路
158...驅動器電晶體
159...閘極
160...像素驅動器電路
162...參考電流槽
200...汲極特性
202...曲線
204...曲線
206...曲線
208...曲線
240...驅動部分
242...驅動器電晶體
244...有機發光二極體
246...負電力線路Vs s
248...接地線路
302...主動矩陣顯示
303a...列電極
303b...列電極
303c...列電極
303d...列電極
303e...列電極
304a...行電極
304b...行電極
304c...行電極
304d...行電極
304e...行電極
306...列線路
310...行線路
312...電源
314...內部導電跡線
316...內部導電跡線
320...主動矩陣像素
322...電源單元
324...電池
326...電壓控制輸入
330...列選擇驅動器
332...輸入
334...行資料驅動器
336...資料輸入
340...恆定電流發生器
342...電源驅動
343...時鐘
344...電流輸出
346...驅動邏輯電路
350...訊框儲存器
352...資料匯流排
354...電流感測裝置
360...電力控制器
上文僅以實例方式參照附圖闡述了本發明之此等及其它態樣,其中:圖1顯示一主動矩陣OLED像素電路之一實例;圖2a及2b分別顯示一主動矩陣像素電路之一TFT驅動器電晶體及一通用主動矩陣像素電路之一驅動部分的汲極特性;圖3顯示一根據本發明一實施例之主動矩陣顯示器驅動器;及圖4顯示圖3之驅動器之一電源電壓控制程序之流程圖。
302...主動矩陣顯示器
303a...列電極
303b...列電極
303c...列電極
303d...列電極
303e...列電極
304a...行電極
304b...行電極
304c...行電極
304d...行電極
304e...行電極
306...列線路
310...行線路
312...電源
314...內部導電跡線
316...內部導電跡線
320...主動矩陣像素
322...電源單元
324...電池
326...電壓控制輸入
330...列選擇驅動器
332...輸入
334...行資料驅動器
336...資料輸入
340...恆定電流發生器
342...電源驅動
343...時鐘
344...電流輸出
346...驅動邏輯電路
350...訊框儲存器
352...資料匯流排
354...電流感測裝置
360...電力控制器

Claims (23)

  1. 一種減小一主動矩陣電致發光顯示器之電力消耗之方法,該方法包括:控制至該顯示器之一電源電壓;及監視至該顯示器之一電源電流;其中該控制進一步包括逐漸地減小該電源電壓,直至該電源電流之減小大於一臨限值,其中該主動矩陣電致發光顯示器包括複數個像素,每一像素具有一驅動電晶體,及其中該監視及控制包括至少週期地監視該電源電流並控制該電源電壓,以將該主動矩陣電致發光顯示器維持於一運作區域,其中該複數個驅動電晶體中具有最高驅動位準之該驅動電晶體恰好位於飽和內。
  2. 如請求項1之方法,其中該主動矩陣電致發光顯示器包括一有機發光二極體(OLED)顯示器。
  3. 如請求項1之方法,其中該主動矩陣電致發光顯示器係一多色彩顯示器,該顯示器之每一像素包括至少不同色彩之第一及第二子像素,該等第一及第二子像素具有各自不同之供電線路,且其中該方法包括對每一該子像素供電線路之單獨之控制及監視。
  4. 如請求項1之方法,其中該主動矩陣電致發光顯示器具有複數個空間子分區,每一該空間子分區具有一各自單獨之供電線路,且其中該方法包括對每一該空間子分區供電線路之單獨之該控制及監視。
  5. 如請求項1之方法,其進一步包括控制該顯示器之一個或多個像素之一驅動位準以補償該電源電壓減小。
  6. 一種包括一電腦可讀媒體之載體,該電腦可讀媒體具有儲存於其上之處理控制碼以執行請求項1之方法。
  7. 如請求項6之載體,其中該主動矩陣電致發光顯示器包括一OLED顯示器。
  8. 一種包含請求項6之載體之主動矩陣顯示器驅動器。
  9. 如請求項8之主動矩陣顯示器驅動器,其中該主動矩陣電致發光顯示器包括一OLED顯示器。
  10. 一種主動矩陣顯示器驅動器,其包括複數個像素,每一像素具有一驅動電晶體,用於驅動一主動矩陣電致發光顯示器,該主動矩陣顯示器驅動器包括:一控制器,其用於控制至該顯示器之一電源電壓;一監視器,其用於監視至該顯示器之一電源電流;其中該控制器逐漸減小該電源電壓直至該電源電流之減少大於一臨限值,及其中該監視器可操作以至少週期地監視該電源電流且該控制器可操作以控制該電源電壓,以將該顯示器維持於一運作區域,其中該複數個驅動電晶體中具有最高驅動位準之該驅動電晶體恰好位於飽和內。
  11. 如請求項10之主動矩陣顯示器驅動器,其中該控制器經組態以調節該控制信號,以便將該感測電流逐漸減小至一臨限值點。
  12. 如請求項11之主動矩陣顯示器驅動器,其中該控制器進 一步經組態以調節該控制信號,以便將該電源維持在該臨限值點之附近。
  13. 如請求項12之主動矩陣顯示器驅動器,其中該臨限值點包括使該複數個驅動電晶體中具有最高驅動位準之該驅動電晶體恰好處於飽和內之一點。
  14. 如請求項10之主動矩陣顯示器驅動器,其中該主動矩陣顯示器驅動器進一步包括用以感測該供電線路上之一電壓的一電壓感測器,其中該控制器進一步包括用於該電壓感測器之一電壓感測輸入;且其中該電壓控制輸出係響應於該電壓感測輸入上之一感測電壓信號。
  15. 如請求項10之主動矩陣顯示器驅動器,其與具有複數個供電線路之一顯示器結合;其中該主動矩陣顯示器驅動器經組態以提供複數個單獨可控制電源至該複數個供電線路且經組態以感測該複數個供電線路中之電流;且其中該控制器經組態以響應於該各自線路中之一電流來單獨地控制該複數個供電線路之每一者上之一電源電壓。
  16. 一種用於一主動矩陣電致發光顯示器驅動器之控制器,該主動矩陣電致發光顯示器具有複數個像素,每一像素具有一電致發光顯示元件及一相關聯驅動電晶體,該主動矩陣電致發光顯示器具有用於供電給該等像素之該等驅動電晶體之一供電線路;該驅動器包括:一像素資料驅動器,用以藉助資料驅動該等顯示像素以供顯示;一可控制電壓電源,用以給該供電線路提供一電源;及一電流感測器,用以感測該供電線路中之一電流;該控制 器包括:一用於該電流感測器之電流感測輸入;一用於該可控制電源之電壓控制輸出;及一電壓控制器,用以響應一來自該電流感測輸入之電流控制信號而為該電壓控制輸出提供一電壓控制信號,其中該電壓控制器可操作以週期地監視來自該電流感測輸入之該電流感測信號且該控制器可操作以控制用於該可控制電壓電源的該電壓控制輸出,以將該電致發光顯示器維持於一運作區域,其中該複數個驅動電晶體中具有最高驅動位準之該驅動電晶體恰好位於飽和內。
  17. 如請求項16之控制器,其進一步經組態以配合該電壓控制信號調節該像素驅動資料。
  18. 如請求項16之控制器,其中該主動矩陣電致發光顯示器包括一OLED顯示器。
  19. 一種主動矩陣電致發光顯示器驅動器,其包含請求項16之控制器。
  20. 一種主動矩陣OLED顯示器,其包括複數個像素以及如請求項10之主動矩陣顯示器驅動器,每一像素具有一OLED顯示元件及一相關聯驅動電晶體。
  21. 如請求項20之主動矩陣OLED顯示器,其中每一個像素包括至少不同色彩之第一及第二子像素,且其中該兩個部分各自包括該第一及第二子像素。
  22. 如請求項20之主動矩陣OLED顯示器,其中該等部分包含該顯示器之複數個空間分離子分區。
  23. 如請求項20之主動矩陣OLED顯示器,其中該顯示器包括具有用於供電至該驅動電晶體的單獨供電線路之至少兩個部分。
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Families Citing this family (121)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2443206A1 (en) 2003-09-23 2005-03-23 Ignis Innovation Inc. Amoled display backplanes - pixel driver circuits, array architecture, and external compensation
CA2472671A1 (en) 2004-06-29 2005-12-29 Ignis Innovation Inc. Voltage-programming scheme for current-driven amoled displays
CA2490858A1 (en) 2004-12-07 2006-06-07 Ignis Innovation Inc. Driving method for compensated voltage-programming of amoled displays
US20140111567A1 (en) 2005-04-12 2014-04-24 Ignis Innovation Inc. System and method for compensation of non-uniformities in light emitting device displays
US9280933B2 (en) 2004-12-15 2016-03-08 Ignis Innovation Inc. System and methods for extraction of threshold and mobility parameters in AMOLED displays
US9171500B2 (en) 2011-05-20 2015-10-27 Ignis Innovation Inc. System and methods for extraction of parasitic parameters in AMOLED displays
US9799246B2 (en) 2011-05-20 2017-10-24 Ignis Innovation Inc. System and methods for extraction of threshold and mobility parameters in AMOLED displays
EP2383720B1 (en) 2004-12-15 2018-02-14 Ignis Innovation Inc. Method and system for programming, calibrating and driving a light emitting device display
US8576217B2 (en) 2011-05-20 2013-11-05 Ignis Innovation Inc. System and methods for extraction of threshold and mobility parameters in AMOLED displays
US10013907B2 (en) 2004-12-15 2018-07-03 Ignis Innovation Inc. Method and system for programming, calibrating and/or compensating, and driving an LED display
US9275579B2 (en) 2004-12-15 2016-03-01 Ignis Innovation Inc. System and methods for extraction of threshold and mobility parameters in AMOLED displays
US10012678B2 (en) 2004-12-15 2018-07-03 Ignis Innovation Inc. Method and system for programming, calibrating and/or compensating, and driving an LED display
CA2496642A1 (en) 2005-02-10 2006-08-10 Ignis Innovation Inc. Fast settling time driving method for organic light-emitting diode (oled) displays based on current programming
US7852298B2 (en) 2005-06-08 2010-12-14 Ignis Innovation Inc. Method and system for driving a light emitting device display
CA2518276A1 (en) 2005-09-13 2007-03-13 Ignis Innovation Inc. Compensation technique for luminance degradation in electro-luminance devices
US9489891B2 (en) 2006-01-09 2016-11-08 Ignis Innovation Inc. Method and system for driving an active matrix display circuit
US9269322B2 (en) 2006-01-09 2016-02-23 Ignis Innovation Inc. Method and system for driving an active matrix display circuit
WO2007079572A1 (en) 2006-01-09 2007-07-19 Ignis Innovation Inc. Method and system for driving an active matrix display circuit
EP3133590A1 (en) 2006-04-19 2017-02-22 Ignis Innovation Inc. Stable driving scheme for active matrix displays
CA2556961A1 (en) 2006-08-15 2008-02-15 Ignis Innovation Inc. Oled compensation technique based on oled capacitance
KR20080090879A (ko) * 2007-04-06 2008-10-09 삼성에스디아이 주식회사 유기 전계 발광 표시 장치 및 그 구동 방법
KR100885966B1 (ko) * 2007-07-27 2009-02-26 삼성에스디아이 주식회사 유기 발광 표시 장치 및 그 구동 방법
GB2453373A (en) * 2007-10-05 2009-04-08 Cambridge Display Tech Ltd Voltage controlled display driver for an electroluminescent display
GB0721567D0 (en) * 2007-11-02 2007-12-12 Cambridge Display Tech Ltd Pixel driver circuits
KR20090084444A (ko) 2008-02-01 2009-08-05 삼성모바일디스플레이주식회사 유기전계발광표시장치 및 그의 구동방법
TW200949807A (en) 2008-04-18 2009-12-01 Ignis Innovation Inc System and driving method for light emitting device display
JP2009282158A (ja) * 2008-05-20 2009-12-03 Samsung Electronics Co Ltd 表示装置
JP2009294376A (ja) * 2008-06-04 2009-12-17 Hitachi Displays Ltd 画像表示装置
KR101481672B1 (ko) * 2008-07-25 2015-01-13 엘지디스플레이 주식회사 유기발광다이오드 표시장치
CA2637343A1 (en) 2008-07-29 2010-01-29 Ignis Innovation Inc. Improving the display source driver
GB0819449D0 (en) * 2008-10-23 2008-12-03 Cambridge Display Tech Ltd Display drivers
US9370075B2 (en) 2008-12-09 2016-06-14 Ignis Innovation Inc. System and method for fast compensation programming of pixels in a display
DE102009004722A1 (de) * 2009-01-15 2010-07-22 Austriamicrosystems Ag Spannungswandler, Schaltungsanordnung und Verfahren zur Spannungswandlung
CA2669367A1 (en) 2009-06-16 2010-12-16 Ignis Innovation Inc Compensation technique for color shift in displays
US9311859B2 (en) 2009-11-30 2016-04-12 Ignis Innovation Inc. Resetting cycle for aging compensation in AMOLED displays
US9384698B2 (en) 2009-11-30 2016-07-05 Ignis Innovation Inc. System and methods for aging compensation in AMOLED displays
CA2688870A1 (en) 2009-11-30 2011-05-30 Ignis Innovation Inc. Methode and techniques for improving display uniformity
US10319307B2 (en) 2009-06-16 2019-06-11 Ignis Innovation Inc. Display system with compensation techniques and/or shared level resources
KR101178910B1 (ko) * 2009-07-30 2012-09-03 삼성디스플레이 주식회사 유기전계발광 표시장치 및 이의 구동전압 설정방법
KR101107161B1 (ko) * 2009-08-18 2012-01-25 삼성모바일디스플레이주식회사 전원 공급 장치, 이를 포함하는 표시 장치 및 그 구동 방법
KR20110024934A (ko) 2009-09-03 2011-03-09 삼성모바일디스플레이주식회사 표시 장치 및 그 구동 방법
US8633873B2 (en) 2009-11-12 2014-01-21 Ignis Innovation Inc. Stable fast programming scheme for displays
US10996258B2 (en) 2009-11-30 2021-05-04 Ignis Innovation Inc. Defect detection and correction of pixel circuits for AMOLED displays
US8803417B2 (en) 2009-12-01 2014-08-12 Ignis Innovation Inc. High resolution pixel architecture
CA2687631A1 (en) 2009-12-06 2011-06-06 Ignis Innovation Inc Low power driving scheme for display applications
CA2692097A1 (en) 2010-02-04 2011-08-04 Ignis Innovation Inc. Extracting correlation curves for light emitting device
US10176736B2 (en) 2010-02-04 2019-01-08 Ignis Innovation Inc. System and methods for extracting correlation curves for an organic light emitting device
US9881532B2 (en) 2010-02-04 2018-01-30 Ignis Innovation Inc. System and method for extracting correlation curves for an organic light emitting device
US20140313111A1 (en) 2010-02-04 2014-10-23 Ignis Innovation Inc. System and methods for extracting correlation curves for an organic light emitting device
US10163401B2 (en) 2010-02-04 2018-12-25 Ignis Innovation Inc. System and methods for extracting correlation curves for an organic light emitting device
US10089921B2 (en) 2010-02-04 2018-10-02 Ignis Innovation Inc. System and methods for extracting correlation curves for an organic light emitting device
CA2696778A1 (en) 2010-03-17 2011-09-17 Ignis Innovation Inc. Lifetime, uniformity, parameter extraction methods
KR101156446B1 (ko) 2010-06-04 2012-06-18 삼성모바일디스플레이주식회사 유기 전계 발광 표시 장치 및 그 구동 방법
KR20120001470A (ko) * 2010-06-29 2012-01-04 삼성모바일디스플레이주식회사 전원 공급 장치, 이를 포함하는 표시 장치 및 그 구동 방법
US8907991B2 (en) 2010-12-02 2014-12-09 Ignis Innovation Inc. System and methods for thermal compensation in AMOLED displays
US9886899B2 (en) 2011-05-17 2018-02-06 Ignis Innovation Inc. Pixel Circuits for AMOLED displays
US9351368B2 (en) 2013-03-08 2016-05-24 Ignis Innovation Inc. Pixel circuits for AMOLED displays
US20140368491A1 (en) 2013-03-08 2014-12-18 Ignis Innovation Inc. Pixel circuits for amoled displays
US9530349B2 (en) 2011-05-20 2016-12-27 Ignis Innovations Inc. Charged-based compensation and parameter extraction in AMOLED displays
US9466240B2 (en) 2011-05-26 2016-10-11 Ignis Innovation Inc. Adaptive feedback system for compensating for aging pixel areas with enhanced estimation speed
EP3547301A1 (en) 2011-05-27 2019-10-02 Ignis Innovation Inc. Systems and methods for aging compensation in amoled displays
EP2945147B1 (en) 2011-05-28 2018-08-01 Ignis Innovation Inc. Method for fast compensation programming of pixels in a display
KR101829398B1 (ko) * 2011-06-30 2018-02-20 삼성디스플레이 주식회사 유기전계발광 표시장치 및 그의 구동방법
US10089924B2 (en) 2011-11-29 2018-10-02 Ignis Innovation Inc. Structural and low-frequency non-uniformity compensation
US9324268B2 (en) 2013-03-15 2016-04-26 Ignis Innovation Inc. Amoled displays with multiple readout circuits
US8937632B2 (en) 2012-02-03 2015-01-20 Ignis Innovation Inc. Driving system for active-matrix displays
US9361823B2 (en) * 2012-03-14 2016-06-07 Sharp Kabushiki Kaisha Display device
US9747834B2 (en) 2012-05-11 2017-08-29 Ignis Innovation Inc. Pixel circuits including feedback capacitors and reset capacitors, and display systems therefore
US8922544B2 (en) 2012-05-23 2014-12-30 Ignis Innovation Inc. Display systems with compensation for line propagation delay
US9257665B2 (en) * 2012-09-14 2016-02-09 Universal Display Corporation Lifetime OLED display
KR101940220B1 (ko) * 2012-10-23 2019-01-18 엘지디스플레이 주식회사 전원제어부를 포함하는 표시장치 및 그 구동방법
US9786223B2 (en) 2012-12-11 2017-10-10 Ignis Innovation Inc. Pixel circuits for AMOLED displays
US9336717B2 (en) 2012-12-11 2016-05-10 Ignis Innovation Inc. Pixel circuits for AMOLED displays
US9830857B2 (en) 2013-01-14 2017-11-28 Ignis Innovation Inc. Cleaning common unwanted signals from pixel measurements in emissive displays
CN108665836B (zh) 2013-01-14 2021-09-03 伊格尼斯创新公司 补偿测量的器件电流相对于参考电流的偏差的方法和系统
CN103197717B (zh) * 2013-02-28 2015-11-25 华为技术有限公司 自适应电压调整方法、芯片以及系统
CA2894717A1 (en) 2015-06-19 2016-12-19 Ignis Innovation Inc. Optoelectronic device characterization in array with shared sense line
US9721505B2 (en) 2013-03-08 2017-08-01 Ignis Innovation Inc. Pixel circuits for AMOLED displays
EP3043338A1 (en) 2013-03-14 2016-07-13 Ignis Innovation Inc. Re-interpolation with edge detection for extracting an aging pattern for amoled displays
CN110634431B (zh) 2013-04-22 2023-04-18 伊格尼斯创新公司 检测和制造显示面板的方法
KR102016153B1 (ko) * 2013-05-10 2019-08-30 삼성디스플레이 주식회사 표시 장치, 표시 장치의 구동 제어 장치 및 그 제어 방법
KR102069223B1 (ko) * 2013-05-30 2020-01-23 삼성디스플레이 주식회사 표시 장치 및 표시 장치의 보호 방법
CN107452314B (zh) 2013-08-12 2021-08-24 伊格尼斯创新公司 用于要被显示器显示的图像的补偿图像数据的方法和装置
US9761170B2 (en) 2013-12-06 2017-09-12 Ignis Innovation Inc. Correction for localized phenomena in an image array
US9741282B2 (en) 2013-12-06 2017-08-22 Ignis Innovation Inc. OLED display system and method
US9502653B2 (en) 2013-12-25 2016-11-22 Ignis Innovation Inc. Electrode contacts
CN103927957B (zh) * 2013-12-25 2017-05-17 上海中航光电子有限公司 一种显示装置的驱动方法、装置和显示设备
DE102015206281A1 (de) 2014-04-08 2015-10-08 Ignis Innovation Inc. Anzeigesystem mit gemeinsam genutzten Niveauressourcen für tragbare Vorrichtungen
CN104036721B (zh) * 2014-05-15 2017-01-18 京东方科技集团股份有限公司 有机发光二极管显示面板及其驱动方法、显示装置
CN104123911B (zh) * 2014-07-01 2016-05-04 京东方科技集团股份有限公司 一种驱动方法、驱动装置及有机电致发光显示器件
DE102014010780A1 (de) * 2014-07-21 2016-01-21 Display Solution AG Einrichtung und Verfahren zum Anzeigen von Informationen auf einem mehrere einzelne Bildschirm-Module aufweisenden Bildschirm
GB201418772D0 (en) 2014-10-22 2014-12-03 Infiniled Ltd Display
GB201418810D0 (en) 2014-10-22 2014-12-03 Infiniled Ltd Display
CA2873476A1 (en) 2014-12-08 2016-06-08 Ignis Innovation Inc. Smart-pixel display architecture
KR102294670B1 (ko) * 2014-12-11 2021-08-31 엘지디스플레이 주식회사 유기발광 표시장치와 그 구동방법
CA2879462A1 (en) 2015-01-23 2016-07-23 Ignis Innovation Inc. Compensation for color variation in emissive devices
GB201502324D0 (en) * 2015-02-12 2015-04-01 Bae Systems Plc Improvements in and relating to drivers
CA2886862A1 (en) 2015-04-01 2016-10-01 Ignis Innovation Inc. Adjusting display brightness for avoiding overheating and/or accelerated aging
KR102306070B1 (ko) * 2015-04-06 2021-09-29 삼성디스플레이 주식회사 유기 발광 표시 장치 및 유기 발광 표시 장치의 구동 방법
CA2889870A1 (en) 2015-05-04 2016-11-04 Ignis Innovation Inc. Optical feedback system
CA2892714A1 (en) 2015-05-27 2016-11-27 Ignis Innovation Inc Memory bandwidth reduction in compensation system
US10657895B2 (en) 2015-07-24 2020-05-19 Ignis Innovation Inc. Pixels and reference circuits and timing techniques
US10373554B2 (en) 2015-07-24 2019-08-06 Ignis Innovation Inc. Pixels and reference circuits and timing techniques
CA2898282A1 (en) 2015-07-24 2017-01-24 Ignis Innovation Inc. Hybrid calibration of current sources for current biased voltage progra mmed (cbvp) displays
CA2900170A1 (en) 2015-08-07 2017-02-07 Gholamreza Chaji Calibration of pixel based on improved reference values
CA2908285A1 (en) 2015-10-14 2017-04-14 Ignis Innovation Inc. Driver with multiple color pixel structure
CN106920514A (zh) * 2015-12-25 2017-07-04 上海和辉光电有限公司 一种显示面板及其制备方法
CN106023892B (zh) * 2016-08-03 2019-01-18 京东方科技集团股份有限公司 有机发光显示装置的驱动方法
CN106782320B (zh) * 2016-12-29 2019-02-19 深圳市华星光电技术有限公司 Oled驱动薄膜晶体管的阈值电压侦测方法
CN107749277B (zh) * 2017-10-16 2022-05-17 维沃移动通信有限公司 一种屏幕亮度的控制方法、装置及移动终端
CN109036286A (zh) * 2018-09-19 2018-12-18 京东方科技集团股份有限公司 显示屏及其像素电路单元的电源管理方法和装置
CN109686308B (zh) * 2019-01-10 2021-01-08 云谷(固安)科技有限公司 一种显示面板、显示装置及显示面板的驱动方法
US11151950B2 (en) * 2019-05-08 2021-10-19 Innolux Corporation Light-emitting device and display equipment related to variable operation voltage used for reducing power consumption
CN110136651B (zh) * 2019-06-12 2021-09-17 京东方科技集团股份有限公司 一种阵列基板、oled显示面板和显示装置
KR20210065283A (ko) * 2019-11-26 2021-06-04 삼성디스플레이 주식회사 표시 장치 및 이의 구동 방법
KR20210106626A (ko) * 2020-02-20 2021-08-31 삼성디스플레이 주식회사 표시 장치
WO2022097767A1 (ko) * 2020-11-04 2022-05-12 엘지전자 주식회사 반도체 발광 소자를 이용한 디스플레이 장치 및 그 제어 방법
WO2022197379A2 (en) * 2021-02-01 2022-09-22 Northwestern University Wavelength converting natural vision system
CN113889035B (zh) * 2021-09-29 2022-11-04 京东方科技集团股份有限公司 像素电路的电压控制方法、装置、设备和存储介质
CN115631714A (zh) * 2022-09-21 2023-01-20 常州市创联电源科技股份有限公司 适用于led显示屏的智能调压供电方法以及装置
KR20240040895A (ko) * 2022-09-22 2024-03-29 주식회사 엘엑스세미콘 데이터구동회로 및 이를 포함하는 디스플레이구동회로

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6346773B1 (en) * 1999-02-24 2002-02-12 Canon Kabushiki Kaisha Method of manufacturing an electron source and an image-forming apparatus, and apparatus for manufacturing the same
US20040108818A1 (en) * 2002-12-10 2004-06-10 Eastman Kodak Company Color OLED display having repeated patterns of colored light emitting elements
US20040246241A1 (en) * 2002-06-20 2004-12-09 Kazuhito Sato Light emitting element display apparatus and driving method thereof
US20050057191A1 (en) * 2003-08-25 2005-03-17 Seiko Epson Corporation Electro-optical device, driving method therefor, and electronic apparatus

Family Cites Families (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4539507A (en) 1983-03-25 1985-09-03 Eastman Kodak Company Organic electroluminescent devices having improved power conversion efficiencies
GB8909011D0 (en) 1989-04-20 1989-06-07 Friend Richard H Electroluminescent devices
JPH0812345B2 (ja) * 1990-05-01 1996-02-07 スタンレー電気株式会社 ドットマトリックス液晶ディスプレイの電源
US5594463A (en) * 1993-07-19 1997-01-14 Pioneer Electronic Corporation Driving circuit for display apparatus, and method of driving display apparatus
GB9317932D0 (en) * 1993-08-26 1993-10-13 Cambridge Display Tech Ltd Electroluminescent devices
US5684365A (en) * 1994-12-14 1997-11-04 Eastman Kodak Company TFT-el display panel using organic electroluminescent media
US6558818B1 (en) 1997-10-23 2003-05-06 Isis Innovation Ltd. Light-emitting dendrimers and devices
GB9803441D0 (en) * 1998-02-18 1998-04-15 Cambridge Display Tech Ltd Electroluminescent devices
GB9805476D0 (en) 1998-03-13 1998-05-13 Cambridge Display Tech Ltd Electroluminescent devices
JP2002311898A (ja) * 2001-02-08 2002-10-25 Semiconductor Energy Lab Co Ltd 発光装置及びそれを用いた電子機器
TWI248319B (en) 2001-02-08 2006-01-21 Semiconductor Energy Lab Light emitting device and electronic equipment using the same
GB0104177D0 (en) 2001-02-20 2001-04-11 Isis Innovation Aryl-aryl dendrimers
SG120889A1 (en) * 2001-09-28 2006-04-26 Semiconductor Energy Lab A light emitting device and electronic apparatus using the same
GB2381643A (en) 2001-10-31 2003-05-07 Cambridge Display Tech Ltd Display drivers
US7274363B2 (en) * 2001-12-28 2007-09-25 Pioneer Corporation Panel display driving device and driving method
JP2003202837A (ja) 2001-12-28 2003-07-18 Pioneer Electronic Corp 表示パネルの駆動装置及び駆動方法
JP2003280583A (ja) * 2002-03-26 2003-10-02 Sanyo Electric Co Ltd 有機el表示装置
GB2389952A (en) * 2002-06-18 2003-12-24 Cambridge Display Tech Ltd Driver circuits for electroluminescent displays with reduced power consumption
GB2389951A (en) 2002-06-18 2003-12-24 Cambridge Display Tech Ltd Display driver circuits for active matrix OLED displays
JP4916642B2 (ja) * 2002-10-31 2012-04-18 株式会社半導体エネルギー研究所 表示装置及びその制御方法
CN1332370C (zh) * 2003-01-29 2007-08-15 胜华科技股份有限公司 主动式有机发光二极管显示器的数字驱动方法及装置
JP4571375B2 (ja) * 2003-02-19 2010-10-27 東北パイオニア株式会社 アクティブ駆動型発光表示装置およびその駆動制御方法
US8537081B2 (en) * 2003-09-17 2013-09-17 Hitachi Displays, Ltd. Display apparatus and display control method
JP2005300929A (ja) * 2004-04-12 2005-10-27 Sanyo Electric Co Ltd 表示装置
JP2005345992A (ja) * 2004-06-07 2005-12-15 Chi Mei Electronics Corp 表示装置
JP4622389B2 (ja) * 2004-08-30 2011-02-02 ソニー株式会社 表示装置及びその駆動方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6346773B1 (en) * 1999-02-24 2002-02-12 Canon Kabushiki Kaisha Method of manufacturing an electron source and an image-forming apparatus, and apparatus for manufacturing the same
US20040246241A1 (en) * 2002-06-20 2004-12-09 Kazuhito Sato Light emitting element display apparatus and driving method thereof
US20040108818A1 (en) * 2002-12-10 2004-06-10 Eastman Kodak Company Color OLED display having repeated patterns of colored light emitting elements
US20050057191A1 (en) * 2003-08-25 2005-03-17 Seiko Epson Corporation Electro-optical device, driving method therefor, and electronic apparatus

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US20090201281A1 (en) 2009-08-13
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CN101263543B (zh) 2011-03-02
WO2007031704A1 (en) 2007-03-22
US8860708B2 (en) 2014-10-14
KR101329913B1 (ko) 2013-11-14
JP2009508171A (ja) 2009-02-26
DE112006002427B4 (de) 2016-06-02
GB0518541D0 (en) 2005-10-19
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GB2443372B (en) 2010-04-28

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