JP2008242336A5 - - Google Patents

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Publication number
JP2008242336A5
JP2008242336A5 JP2007086205A JP2007086205A JP2008242336A5 JP 2008242336 A5 JP2008242336 A5 JP 2008242336A5 JP 2007086205 A JP2007086205 A JP 2007086205A JP 2007086205 A JP2007086205 A JP 2007086205A JP 2008242336 A5 JP2008242336 A5 JP 2008242336A5
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Japan
Prior art keywords
display device
voltage
driver circuit
circuit
source driver
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JP2007086205A
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Japanese (ja)
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JP2008242336A (en
JP4751359B2 (en
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Priority to JP2007086205A priority Critical patent/JP4751359B2/en
Priority claimed from JP2007086205A external-priority patent/JP4751359B2/en
Publication of JP2008242336A publication Critical patent/JP2008242336A/en
Publication of JP2008242336A5 publication Critical patent/JP2008242336A5/ja
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Claims (10)

EL素子を有する画素がマトリックス状に配置された表示画面を有するパネル基板と、
映像信号を出力するソースドライバ回路と、
前記表示画面の画素行を順次選択するゲートドライバ回路と、
前記EL素子のアノード電圧とカソード電圧のうち、少なくとも一方の電圧を発生する電源回路とを具備し、
前記電源回路は、前記アノード電圧を出力するアノード端子と前記カソード電圧を出力するカソード端子のうち、少なくとも一方の端子を電気的にハイインピーダンスにする機能を有することを特徴とするEL表示装置。
A panel substrate having a display screen in which pixels having EL elements are arranged in a matrix;
A source driver circuit for outputting a video signal;
A gate driver circuit for sequentially selecting pixel rows of the display screen;
A power supply circuit that generates at least one of an anode voltage and a cathode voltage of the EL element;
The EL display device according to claim 1, wherein the power supply circuit has a function of electrically setting at least one of an anode terminal for outputting the anode voltage and a cathode terminal for outputting the cathode voltage to have a high impedance .
フレキシブル基板を更に具備し、
前記パネル基板に前記ソースドライバ回路が形成または実装されており、
前記フレキシブル基板に前記電源回路が形成または実装されており、
前記フレキシブル基板が、前記パネル基板に接続されていることを特徴とする請求項1記載のEL表示装置。
Further comprising a flexible substrate,
The source driver circuit is formed or mounted on the panel substrate;
The power supply circuit is formed or mounted on the flexible substrate,
The EL display device according to claim 1 , wherein the flexible substrate is connected to the panel substrate .
前記ソースドライバ回路は、前記ゲートドライバ回路で使用する電圧を発生することを特徴とする請求項1記載のEL表示装置。 2. The EL display device according to claim 1 , wherein the source driver circuit generates a voltage used in the gate driver circuit . 前記アノード電圧と前記カソード電圧のうち、少なくとも一方を可変できることを特徴とする請求項1記載のEL表示装置。 The EL display device according to claim 1 , wherein at least one of the anode voltage and the cathode voltage can be varied . 前記ソースドライバ回路の出力端子にソース信号線が接続され、  A source signal line is connected to the output terminal of the source driver circuit,
前記ソース信号線へ電圧を印加するスイッチ回路が形成されていることを特徴とする請求項1記載のEL表示装置。  2. The EL display device according to claim 1, further comprising a switch circuit for applying a voltage to the source signal line.
前記電源回路は、前記ソースドライバ回路で使用するアナログ電圧を発生し、前記アナログ電圧、前記アノード電圧または前記カソード電圧のオンオフを独立して制御できることを特徴とする請求項1記載のEL表示装置。  The EL display device according to claim 1, wherein the power supply circuit generates an analog voltage used in the source driver circuit, and can independently control on / off of the analog voltage, the anode voltage, or the cathode voltage. 前記パネルの温度を検出する温度補償回路を更に具備することを特徴とする請求項1記載のEL表示装置。  The EL display device according to claim 1, further comprising a temperature compensation circuit that detects a temperature of the panel. 外光の強弱を検出するホトセンサを更に具備することを特徴とする請求項1記載のEL表示装置。  2. The EL display device according to claim 1, further comprising a photosensor for detecting the intensity of external light. 点灯率を計算する演算回路を更に具備することを特徴とする請求項1記載のEL表示装置。  The EL display device according to claim 1, further comprising an arithmetic circuit for calculating a lighting rate. 前記画素には、前記EL素子に電流を供給する駆動用トランジスタが形成されており、  In the pixel, a driving transistor for supplying current to the EL element is formed,
前記駆動用トランジスタは、Pチャンネルトランジスタであることを特徴とする請求項1記載のEL表示装置。  2. The EL display device according to claim 1, wherein the driving transistor is a P-channel transistor.
JP2007086205A 2007-03-29 2007-03-29 EL display device Active JP4751359B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2007086205A JP4751359B2 (en) 2007-03-29 2007-03-29 EL display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2007086205A JP4751359B2 (en) 2007-03-29 2007-03-29 EL display device

Publications (3)

Publication Number Publication Date
JP2008242336A JP2008242336A (en) 2008-10-09
JP2008242336A5 true JP2008242336A5 (en) 2009-03-26
JP4751359B2 JP4751359B2 (en) 2011-08-17

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
JP2007086205A Active JP4751359B2 (en) 2007-03-29 2007-03-29 EL display device

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JP (1) JP4751359B2 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010204617A (en) * 2009-03-24 2010-09-16 Casio Computer Co Ltd Display device and method for manufacturing display device
US8427170B2 (en) 2009-03-05 2013-04-23 Casio Computer Co., Ltd. Drive circuit array substrate and production and test methods thereof
JP2010231187A (en) * 2009-03-05 2010-10-14 Casio Computer Co Ltd Drive circuit array substrate and production and test methods thereof
JP5594977B2 (en) * 2009-03-24 2014-09-24 エルジー ディスプレイ カンパニー リミテッド Image display device
CN107561752B (en) * 2017-09-28 2020-04-10 上海天马微电子有限公司 Array substrate, driving method thereof and display panel
JP7012548B2 (en) * 2018-02-07 2022-01-28 シャープ株式会社 Display device and display system
CN114255680A (en) * 2020-09-24 2022-03-29 华为技术有限公司 Display device, detection method thereof, storage medium, display driving chip and equipment

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10214060A (en) * 1997-01-28 1998-08-11 Casio Comput Co Ltd Electric field light emission display device and its driving method
JP2003066865A (en) * 2001-08-24 2003-03-05 Matsushita Electric Ind Co Ltd Display substrate, and method and device for its inspection
JP4211368B2 (en) * 2002-11-25 2009-01-21 沖電気工業株式会社 Test method for display drive circuit
JP4039441B2 (en) * 2003-05-19 2008-01-30 セイコーエプソン株式会社 Electro-optical device and electronic apparatus
JP2005134494A (en) * 2003-10-28 2005-05-26 Toshiba Matsushita Display Technology Co Ltd El display device
JP4665419B2 (en) * 2004-03-30 2011-04-06 カシオ計算機株式会社 Pixel circuit board inspection method and inspection apparatus
JP4569194B2 (en) * 2004-04-28 2010-10-27 ソニー株式会社 Light emitting device repair method and manufacturing method, light emitting device repair device and manufacturing apparatus
JP2005338532A (en) * 2004-05-28 2005-12-08 Tohoku Pioneer Corp Active drive type light emission display device and electronic equipment mounted with same display device
JP4984815B2 (en) * 2006-10-19 2012-07-25 セイコーエプソン株式会社 Manufacturing method of electro-optical device

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