JP5684469B2 - 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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- 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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- 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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- 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
120 データ駆動部、
130 画素部、
140,240 画素、
142,242 画素回路、
150 タイミング制御部、
160 制御線駆動部、
170 第1電源(ELVDD)駆動部、
180 第2電源(ELVSS)駆動部。
Claims (24)
- 走査線、制御線、及びデータ線に接続された画素を備える画素部と、
前記制御線を介して各画素に制御信号を供給する制御線駆動部と、
前記画素部の各画素に第1電源電圧を印加する第1電源駆動部と、
前記画素部の各画素に第2電源電圧を印加する第2電源駆動部と、を備え、
前記各画素は、
ゲート電極が前記走査線に接続され、第1電極が前記データ線に接続され、第2電極が第1ノードに接続された第1トランジスタと、
ゲート電極が第2ノードに接続され、第1電極が前記第1電源駆動部に接続され、第2電極が有機発光素子のアノード電極に接続された第2トランジスタと、
前記第1ノードと前記第2トランジスタの第1電極との間に接続された第1キャパシタと、
前記第1ノードと前記第2ノードとの間に接続された第2キャパシタと、
ゲート電極が前記制御線に接続され、第1電極は前記第2トランジスタのゲート電極に接続され、第2電極は前記第2トランジスタの第2電極に接続された第3トランジスタと、
アノード電極が前記第2トランジスタの第2電極に接続され、カソード電極が前記第2電源駆動部に接続された有機発光素子と、を備えて構成され、
前記第1及び第2電源駆動部のうちの少なくとも一方は、1フレーム期間中においてレベルが変化する電圧を前記画素部の各画素に印加し、
前記制御線駆動部及び前記第1及び第2電源駆動部は、前記画素部に備えられる画素全体に対して、
初期化するとき、前記各画素に備えられた画素回路の各ノードの電圧を初期化するために初期化用に設定されたレベルの電圧の制御信号及び第1及び第2電源電圧を同時に一括して供給し、
リセットするとき、前記各画素に備えられた有機発光素子のアノード電極の電圧をカソード電極の電圧以下に低下させるためにリセット用に設定されたレベルの電圧の制御信号及び第1及び第2電源電圧を同時に一括して供給し、
閾値電圧を補償するとき、前記各画素に備えられた第2トランジスタの閾値電圧を格納するために閾値電圧補償用に設定されたレベルの電圧の制御信号及び第1及び第2電源電圧を同時に一括して供給し、
発光させるとき、前記各画素に格納されたデータ電圧に対応する輝度で各々の画素全体が同時に発光するために発光用に設定されたレベルの電圧の制御信号及び第1及び第2電源電圧を同時に一括して供給し、
発光オフさせるとき、前記各画素に備えられた有機発光素子のアノード電極の電圧を低下させて発光をオフするために発光オフ用に設定されたレベルの電圧の制御信号及び第1及び第2電源電圧を同時に一括して供給することを特徴とする有機電界発光表示装置。 - 前記走査線を介して各画素に走査信号を供給する走査駆動部と、
前記データ線を介して各画素にデータ信号を供給するデータ駆動部と、
前記制御線駆動部、第1及び第2電源駆動部、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、をさらに備え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。 - 前記第1電源駆動部は、1フレーム期間中においてレベルが3段階に変化する第1電源電圧を印加し、第2電源駆動部は、一定レベルの第2電源電圧を1フレーム期間全体にわたり印加することを特徴とする請求項1または2に記載の有機電界発光表示装置。
- 前記第1及び第2電源駆動部は、1フレーム期間中においてレベルが2段階に変化する電圧をそれぞれ印加することを特徴とする請求項1または2に記載の有機電界発光表示装置。
- 前記第1電源駆動部は、一定レベルの第1電源電圧を1フレーム期間全体にわたり印加し、前記第2電源駆動部は、1フレーム期間においてレベルが3段階に変化する電圧を印加することを特徴とする請求項1または2に記載の有機電界発光表示装置。
- 前記走査信号は、1フレーム期間の一部の期間について各走査線に順次印加され、前記一部の期間以外の期間では全走査線に対して同時に印加されることを特徴とする請求項2〜5のいずれか1項に記載の有機電界発光表示装置。
- 前記順次印加される走査信号の幅は、2水平時間(2H)として印加され、これに隣接して印加される走査信号が互いに1水平時間(1H)だけ重畳するように印加されることを特徴とする請求項6に記載の有機電界発光表示装置。
- 前記データ信号は、前記順次印加された走査信号に対応して各走査線に接続された画素に順次印加され、前記一部の期間以外の期間では各データ線を介して全画素に同時に印加されることを特徴とする請求項6または7に記載の有機電界発光表示装置。
- 前記第1、第2、及び第3トランジスタは、PMOSで実現されることを特徴とする請求項1〜8のいずれか1項に記載の有機電界発光表示装置。
- 前記画素部に備えられた各画素に対して、前記第1電源電圧が、レベルが変化する中で最も高いレベルで印加され、前記制御信号が論理レベルとしてのハイレベルで印加されたとき、前記各画素は、各画素に予め格納されたデータ信号に対応する輝度で同時に発光することを特徴とする請求項1〜9のいずれか1項に記載の有機電界発光表示装置。
- 画素部を構成する画素全体に対してそれぞれ既定レベルの電圧を有する第1電源電圧、第2電源電圧、走査信号、制御信号、データ信号を一括して同時に印加し、前記各画素に備えられた画素回路の各ノードの電圧を初期化する第1ステップと、
前記画素全体に対してそれぞれ既定レベルの電圧値を有する第1電源電圧、第2電源電圧、走査信号、制御信号、データ信号を一括して同時に印加し、各画素に備えられた有機発光素子のアノード電極の電圧をカソード電極の電圧以下に低下させる第2ステップと、
前記画素全体に対してそれぞれ既定レベルの電圧を有する第1電源電圧、第2電源電圧、走査信号、制御信号、データ信号を一括して同時に印加し、前記各画素に備えられた駆動トランジスタの閾値電圧を格納する第3ステップと、
前記画素部の各走査線に接続された各々の画素に対して走査信号が順次印加され、前記順次印加された走査信号に対応して各走査線に接続された画素にデータ信号が印加される第4ステップと、
前記画素全体に対してそれぞれ既定レベルの電圧を有する第1電源電圧、第2電源電圧、走査信号、制御信号を一括して同時に印加し、前記各画素に格納されたデータ電圧に対応する輝度で各々の画素全体が同時に発光する第5ステップと、
前記画素全体に対してそれぞれ既定レベルの電圧を有する第1電源電圧、第2電源電圧、走査信号、制御信号を一括して同時に印加し、前記各画素に備えられた有機発光素子のアノード電極の電圧を低下させて発光をオフする第6ステップと、を含み、
前記各画素は、
ゲート電極が前記走査線に接続され、第1電極が前記データ線に接続され、第2電極が第1ノードに接続された第1PMOSトランジスタと、
ゲート電極が第2ノードに接続され、第1電極が第1電源に接続され、第2電極が有機発光素子のアノード電極に接続された第2PMOSトランジスタと、
前記第1ノードと前記第2トランジスタの第1電極との間に接続された第1キャパシタと、
前記第1ノードと前記第2ノードとの間に接続された第2キャパシタと、
ゲート電極が制御線に接続され、第1電極は前記第2トランジスタのゲート電極に接続され、第2電極は前記第2トランジスタの第2電極に接続された第3PMOSトランジスタと、
アノード電極が前記第2トランジスタの第2電極に接続され、カソード電極が第2電源に接続された有機発光素子と、を備えて構成されることを特徴とする有機電界発光表示装置の駆動方法。 - 前記第1〜第6ステップによって1つのフレームが実現され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。
- 順次進行するフレームについて、n番目のフレームは、左眼用の画像を表示し、n+1番目のフレームは、右眼用の画像を表示することを特徴とする請求項12に記載の有機電界発光表示装置の駆動方法。
- 前記n番目のフレームの発光期間とn+1番目のフレームの発光期間との間の期間の全時間をシャッタ眼鏡の応答時間に同期させるように実現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。
- 前記第1ステップでは、走査信号がローレベルで印加され、制御信号はハイレベルで印加され、第1電源電圧がハイレベルとローレベルとの間の中間レベルで印加されることを特徴とする請求項11〜14のいずれか1項に記載の有機電界発光表示装置の駆動方法。
- 前記第2ステップは、第2_1〜第2_3ステップに分けられ、
前記第2_1ステップでは、前記第1電源電圧がローレベルで印加され、走査信号はハイレベルまたはローレベルで印加され、制御信号はハイレベルで印加され、
前記第2_2ステップでは、前記第1電源電圧がローレベルで印加され、走査信号はハイレベルまたはローレベルで印加され、制御信号GC(t)はハイレベルで印加され、
前記第2_3ステップでは、前記第1電源電圧が中間レベルで印加され、走査信号はハイレベルまたはローレベルで印加され、制御信号はハイレベルで印加されることを特徴とする請求項11〜14のいずれか1項に記載の有機電界発光表示装置の駆動方法。 - 前記第2_1ステップ及び第2_2ステップで前記走査信号がローレベルで印加されると、これに対応するデータ信号はローレベルで印加されることを特徴とする請求項16に記載の有機電界発光表示装置の駆動方法。
- 前記第2_3ステップで前記走査信号がローレベルで印加されると、これに対応するデータ信号はハイレベルで印加されることを特徴とする請求項16に記載の有機電界発光表示装置の駆動方法。
- 前記第3ステップは、第3_1ステップ〜第3_3ステップに分けられ、
前記第3_1ステップでは、前記第1電源電圧が中間レベルで印加され、走査信号はハイレベルまたはローレベルで印加され、制御信号はハイレベルで印加され、
前記第3_2ステップ及び第3_3ステップでは、前記第1電源電圧が中間レベルで印加され、走査信号はローレベルで印加され、制御信号GC(t)はローレベルで印加されることを特徴とする請求項11〜14のいずれか1項に記載の有機電界発光表示装置の駆動方法。 - 前記第3_1ステップで前記走査信号がローレベルで印加されると、これに対応するデータ信号はハイレベルで印加されることを特徴とする請求項19に記載の有機電界発光表示装置の駆動方法。
- 前記第4ステップでは、制御信号がローレベルで印加されることを特徴とする請求項11〜14のいずれか1項に記載の有機電界発光表示装置の駆動方法。
- 前記第4ステップで順次印加される走査信号の幅は2水平時間(2H)として印加され、これに隣接して印加される走査信号が互いに1水平時間(1H)だけ重畳するように印加されることを特徴とする請求項11〜14のいずれか1項に記載の有機電界発光表示装置の駆動方法。
- 前記第5ステップでは、前記第1電源電圧がハイレベルで印加され、走査信号及び制御信号はハイレベルで印加されることを特徴とする請求項11〜14のいずれか1項に記載の有機電界発光表示装置の駆動方法。
- 前記第6ステップでは、前記第1電源電圧が中間レベルで印加され、走査信号及び制御信号はハイレベルで印加されることを特徴とする請求項11〜14いずれか1項に記載の有機電界発光表示装置の駆動方法。
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CN101989403B (zh) | 2014-02-05 |
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EP2293274A3 (en) | 2011-10-05 |
EP2293274B1 (en) | 2013-11-20 |
KR20110013693A (ko) | 2011-02-10 |
US9064458B2 (en) | 2015-06-23 |
JP2011034039A (ja) | 2011-02-17 |
TW201415438A (zh) | 2014-04-16 |
US20110025671A1 (en) | 2011-02-03 |
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