TW548622B - Driving method of passive organic light-emitting diode display - Google Patents
Driving method of passive organic light-emitting diode display Download PDFInfo
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- TW548622B TW548622B TW090133352A TW90133352A TW548622B TW 548622 B TW548622 B TW 548622B TW 090133352 A TW090133352 A TW 090133352A TW 90133352 A TW90133352 A TW 90133352A TW 548622 B TW548622 B TW 548622B
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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]
- G09G3/3216—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 a passive matrix
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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
- G09G2310/0251—Precharge or discharge of pixel before applying new pixel voltage
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0209—Crosstalk reduction, i.e. to reduce direct or indirect influences of signals directed to a certain pixel of the displayed image on other pixels of said image, inclusive of influences affecting pixels in different frames or fields or sub-images which constitute a same image, e.g. left and right images of a stereoscopic display
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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
- 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
- G09G2330/023—Power management, e.g. power saving using energy recovery or conservation
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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
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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)
- Control Of El Displays (AREA)
- Electroluminescent Light Sources (AREA)
Description
548622 五、發明說明(1) 發明領域 本發明係關於被動式有機發光二極體顯示器的驅動方 法、’特別係能夠解決交互干擾(Crosstalk)的現象,及降 低消耗功率之驅動方法。 發明背景 圖一係習知有機發光二 圖。该顯示器具有複數個掃 、Com5及複數個資料線以“ 一個像素陣列,其中每一個 受該掃描線及該資料線所驅 驅動晶片1 2用以分別供應資 驅動晶片1 0依照循序掃描方 描信號至該掃描線。 極體(0LED)顯示器之内部電路 描線Coml、Com2、Com3、Com4 、Seg2 、Seg3 、Seg4 、Seg5與 像素係一有機發光二極體,且 動’該顯示器同時包含資料線 料h號至該資料線,與掃描線 式或交錯掃描方式分別供應掃 父互干擾(Crosstalk )雜訊係影塑習抑 晝面品質的因素,其容易造成殘餘以 的原因有二:直一,艿夕如士,以像而父互干擾產座 線及-條掃描線;其二。光二極體共用-條資乘 間,而使得上一個掃描動作之資^ =作之間沒有延遲時 個掃描動作之掃描線進行放電。、Λ内的殘餘電荷往下-
的非選取狀I 此外,由於習知〇LED顯示器之資 低電位,而掃描線的非選取狀能*二 548622
壓或負偏壓產生。因逆偏壓會產生逆向漏電流,因而使 驅動晶片及顯示面板本身的消耗功率增加,如果顯示面板 本身的整流比不佳的話,又會造成信號亂竄而產生交互干 擾,對於顯示器的顯示品質無疑是雪上加霜,會造成齐产 不均乃至影像模糊的現象。 〜又 發明概要
本發明之目的,係為解決上述之交互干擾問題,同 可降低驅動晶片及顯示面板的消耗功率。 為達 極體顯示 該複數個 晶片予以 至一掃描 以連接; 掃描線驅 定的延遲 ,且於該 將該另一 另一掃描 動晶片予 複執行步 掃描動作 到上述目的,本 器的驅動方法, 資料線分別與該 斷路;(B)於該 線時,同步地將 (C)於該掃描信 動晶片予以斷路 時間之後,供應 掃描線驅動晶片 掃描線與該掃描 信號中止之瞬間 以斷路;依據該 驟(B)至步驟(E) 發明提供一種 包括: 掃描線 掃描線 該掃描 號中止 ;(D) (A)將 驅動晶 驅動晶 線與該 之瞬間 該掃描 另一掃描 供應該 線驅動 ’將該 掃描線 ’直到 另 ITL 掃 晶片予 另一掃 驅動晶 完成對 被動式有機發光-該複數個掃描線, 片及該資料線驅j 片供應一掃描信^ 掃描線驅動晶片」 ’將該掃描線與1 線驅動晶片經一 ^ 號至一另一掃描i 描訊號時,同步j 以連接;(E)於1 描線與該掃描線j 片之掃描方式,: 該複數個掃描線」
第6頁 548622
五、發明說明(3) 間 路 間 路 上述之步驟(C)進一步包含··於該掃描信號中止之瞬 同步地將該複數個資料線與該資料線驅動晶片斷 該步驟(E)進一步包含··於該另一掃描信號中止之瞬 同步地將該複數個資料線與該資料線驅動晶片予以斷 為使熟悉該項技藝人士瞭解本發明之目的、特徵及功 效,茲藉由下述具體實施例,並配合所附之圖式, 明詳加說明如后: 對本^ 發明詳細說明 現揭露本發明之方法如下,圖二係本發明之流程圖。 步驟20係將顯示器裡的複數個掃描線及複數個資料線二| 與掃描線驅動晶片1 〇及資料線驅動晶片1 2予以斷路/ 2 2係於掃描線驅動晶片1 〇供應一掃描信號至一掃描線^驟 同步地將該掃描線與掃描線驅動晶片丨〇予以連接;:’ 係於該掃描信號中止之瞬間,將該掃描線與掃描線驅動曰 片1 0予以斷路;步驟2 6係掃描線驅動晶片1 0經一預Α 曰曰 遲時間之後,再對另一掃描線進行掃描,掃描線驅叙曰 初曰曰片 10供應另一知4田號至邊另'掃描線,且於掃描線區動曰 片1 0供應該另一掃描訊號時,同步地將該另一掃描線與= 描線驅動晶片1 0予以連接;步驟28係於該另一掃描信^ 7 止之瞬間,再次將該另一掃描線與掃描線驅動晶片丨〇予1* r 斷路。依據掃描線驅動晶片1 0之預定的掃描方式,重複執^ 548622
行步驟2 2至步驟2 8 作。 直到兀成對該複數個掃描線之掃描動 圖三A至圖三C顯示依據本發 OLED顯示器的動作示意圖。圖三一,、體實施例,其 對於各掃描線的選取狀態為m/W描線驅動晶片10 Λ津桩mno.、七一 电位或接地,而非選取狀態 為汙接(floating)或咼阻抗或斷路, 於久咨斗止々合ΛΛ、阳i 1. At t 貝了十綠驅動晶片1 2對 於各貝枓線的選取狀態為高電位或接一 而非# 狀態為浮接(fl〇ating)或高阻浐 電机源,而非避取 = 1 且有機發光二極體30、32、34分 另J又到貝枓線Segl、Seg3、Seg5的驅動而發光。 —/:^^”成對掃描線㈤之掃描動作^掃描線 ,態’即浮接或高阻抗或斷路,如 二:斤不。此呀,所有的有機發光二極體不再受到掃 描線驅動晶片1 〇的驅動,且自 一 /Μ 來看,該迴路等效於-極=(loop),從電學上 .^ ^ 予议於一極體串聯一電容所組成的電路,因 二㈣=行放電,使得資料線Segl、seg3、seg5之殘 :二:S由顯示面板内部自行放電而不會產生前述的交互 处現象。圖三B_1之狀態的維持時間,應以 月匕夠使柃描線上之殘餘電荷消耗殆盡為基準,才能一 掃描線進行掃描,目此這段維持時間又可稱為「延遲時間 二:‘依據本發明,並不特別在意圖三B-1中各資料線的選 取狀恶’此意謂在延遲時間的期間,I資料線的選取狀態 可、准持不’交或先切換至下—掃描動作所需的資料線選取狀
第8頁 548622 五、發明說明(5) 悲(如圖三B -1 ),者铁介叮* 態(如圖三B-2 ),A係因;^戶^貧料線切換至非選取狀 ,並不會受到外接電路的影響, 白一=-迴路 任何影響。 動—亚不會流入迴路内,因此沒有 圖三C顯示〇LED顯示器正對掃描線Cg 土有纖二極體31、33分別受到資料㈣、丁:二二 動而發光。本發明依據掃描線驅 g的: 複進行上述之「選取—非選取_延 =方式,重 點來描述,則可稱為重複進行「連接」二:以:路觀 ,直到完成對所有掃描線之掃描動作。 “」專步驟 麥考圖四 描線及各資料 線驅動晶片1 0 線Coml、Com2 以循序掃描方 描方式的0LED 明之方法。在 資料訊號至資 動電流。在一 線Segl 、 Seg3 電;在時間區 ’其顯示依據本發明之0LED顯示器,其各掃 線内的訊號波形圖。由圖四可觀察出,掃描 係以循序掃描方式分別供應掃描信號至掃描 ' 、Com4、Com5,但本發明並非限定於 式進行掃描的0LED顯示器,對於使用其他掃 顯不器而言,如交錯掃描等,亦可使用本發 時間區段Ί\内,資料線驅動晶片丨2同時供應 料線Segl、Seg3、Seg5,該資料訊號亦即驅 短時間區段Tf内,即前述的延遲時間,資料 、S e g 5之殘餘電荷正由顯示面板内部自行放 段丁2内’則進行下一掃描線(c〇m2)的掃描動 548622 五、發明說明(6) 作。 本發明之特點,可以歸納如下: 的:5 2日:】的設計’使得資料線之殘餘電荷有充足 的,間進仃放電,故不會產生交互干擾(Cr〇sstalk) 料線的非選取電位皆為浮接⑴或 = =有::: =有逆偏壓或負偏壓的 可以全部消耗於顯示面&,而可以降低 馬t勁日日片及顯示面板的消耗功率。 依據本發明’ $會有逆向漏電流的產生,因此即使顯 不面板本身的整流比不#,也不會有信號 的交互干擾。 •本發明極易以電路設計方式實現,其中可以使用電晶 體開關以控制資料線與資料線驅動晶片的連接與否Μ 以及掃描線與掃描線驅動晶片的連接與否,同時使用 一具有可設定之延遲時間的觸發器(trigger )以維持 資料線與資料線驅動晶片的斷路狀態或掃描線與掃描 線驅動晶片的斷路狀態。 雖然本發明已以一具體實施例揭露如上,然其並非用
548622 五、發明說明(7) 以限定本發明,任何熟悉此技藝者,在不脫離本發明之精 神和範圍内,當可作各種之更動與潤飾,因此本發明之保 護範圍當視後附之申請專利範圍所界定者為準。
第11頁 548622 圖式簡單說明 圖式簡單說明 圖一係習知有機發光二極體(OLED)顯示器之内部電路 圖。 圖二係本發明之流程圖。 圖三A至圖三C顯示依據本發明之一具體實施例,其 OLED顯示器的動作示意圖。 圖四顯示依據本發明之OLED顯示器,其各掃描線及各 資料線内的訊號波形圖。 圖號編號說明 10 掃描線驅動晶片 12 貧料線驅動晶片 30、31、32、33、34 有機發光二極體 3 6、3 8 電流源
Claims (1)
- 548622 六、申請專利範圍 申請專利範圍 、一種被動式有機發光二極體顯示器的驅動方法,並中 ,顯示器具有複數個掃描線、複數個資料線、斑受該择 指線及該貧料線所驅動之複數個有機發光二極體, :貧片用以分別供應資料信號至該資料線, 梦片依照一掃描方式以分別供應掃描信 琥至该知描線,該驅動方法包括·· (A)將該複數個掃描線及該 ^ ^ ^ 線驅動晶片及該資料線驅二貝枓線分別與該掃描 茨貝枓線驅動晶片予以斷路; (β )於該掃描線驅動晶片供一 ,同步地將該掃描線與該;描:f:號至-掃描線時 線驅動晶片予以連接; (C )於该掃描信號中止之瞬 驅動晶片予以斷路· 將该知描線與該掃描線 (D) 曰曰 與 亥婦知線驅動晶片經一 另一掃描訊號至一另一的延遲時間之後,供應 :供應該另-掃描訊號;描:牛 遠掃描線驅動晶片予以連接? 乂地將该另-掃描線 (E) ;4另一掃描信號中止之瞬間 將该另一知描線與 548622 六、申請專利範圍 該掃描線驅動晶片予以斷路; 作。 依據該掃描線驅動晶片之掃描方式,重複執行步驟 (B)至步驟(E),直到完成對該複數個掃描線之掃^動 如申請專利範圍第1項所述的驅動方法,其中該步驟 (C )進步包含·於該掃描信號中止之瞬間,同步地將 該複數個資料線與該資料線驅動晶片予以斷路。 πη t明專利範圍第1項所述的驅動方法,其中該步驟 地將1、步^包含:於該另一掃描信號中止之瞬間,同梦 、Μ複數個資料線與該資料線驅動晶片予以斷路。 式俜‘:圍第1項所述的驅動方法,其中該掃描方 、你馮循序掃描方式。 第丨:員所述的驅動方法,其中該掃描方 ~又箝輙描方式。第14頁
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TW090133352A TW548622B (en) | 2001-12-31 | 2001-12-31 | Driving method of passive organic light-emitting diode display |
JP2002368190A JP2003223139A (ja) | 2001-12-31 | 2002-12-19 | パッシブタイプ有機発光ダイオードディスプレイの駆動方法 |
US10/330,174 US20030122734A1 (en) | 2001-12-31 | 2002-12-30 | Method of driving passive OLED monitor |
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TWI399721B (zh) * | 2007-10-10 | 2013-06-21 | Anapass Inc | 顯示驅動裝置及顯示裝置 |
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US20050007321A1 (en) * | 2003-06-30 | 2005-01-13 | Schuler Jeffrey A. | Reduced reverse bias in organic light emitting diode displays |
JPWO2005104073A1 (ja) * | 2004-03-30 | 2008-03-13 | 富士フイルム株式会社 | 発光パネル表示装置 |
US8564252B2 (en) | 2006-11-10 | 2013-10-22 | Cypress Semiconductor Corporation | Boost buffer aid for reference buffer |
US8035401B2 (en) * | 2007-04-18 | 2011-10-11 | Cypress Semiconductor Corporation | Self-calibrating driver for charging a capacitive load to a desired voltage |
TW200921599A (en) * | 2007-11-15 | 2009-05-16 | Fuji Electric Holdings | Drive method and drive device for organic EL display |
WO2009078222A1 (ja) * | 2007-12-17 | 2009-06-25 | Fuji Electric Holdings Co., Ltd. | 有機elパッシブマトリックス素子の駆動装置及びその方法 |
US8364870B2 (en) | 2010-09-30 | 2013-01-29 | Cypress Semiconductor Corporation | USB port connected to multiple USB compliant devices |
US9667240B2 (en) | 2011-12-02 | 2017-05-30 | Cypress Semiconductor Corporation | Systems and methods for starting up analog circuits |
TWI447696B (zh) * | 2012-05-02 | 2014-08-01 | Au Optronics Corp | 有機發光二極體顯示面板的驅動方法 |
CN107978277B (zh) * | 2018-01-19 | 2019-03-26 | 昆山国显光电有限公司 | 扫描驱动器及其驱动方法、有机发光显示器 |
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JP3077579B2 (ja) * | 1996-01-30 | 2000-08-14 | 株式会社デンソー | El表示装置 |
US6594606B2 (en) * | 2001-05-09 | 2003-07-15 | Clare Micronix Integrated Systems, Inc. | Matrix element voltage sensing for precharge |
US6963321B2 (en) * | 2001-05-09 | 2005-11-08 | Clare Micronix Integrated Systems, Inc. | Method of providing pulse amplitude modulation for OLED display drivers |
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