JP2012078798A - El表示装置及び当該el表示装置を具備する電子機器 - Google Patents
El表示装置及び当該el表示装置を具備する電子機器 Download PDFInfo
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- JP2012078798A JP2012078798A JP2011184457A JP2011184457A JP2012078798A JP 2012078798 A JP2012078798 A JP 2012078798A JP 2011184457 A JP2011184457 A JP 2011184457A JP 2011184457 A JP2011184457 A JP 2011184457A JP 2012078798 A JP2012078798 A JP 2012078798A
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- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
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- 150000002739 metals Chemical class 0.000 description 1
- QGLKJKCYBOYXKC-UHFFFAOYSA-N nonaoxidotritungsten Chemical compound O=[W]1(=O)O[W](=O)(=O)O[W](=O)(=O)O1 QGLKJKCYBOYXKC-UHFFFAOYSA-N 0.000 description 1
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- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
- JBQYATWDVHIOAR-UHFFFAOYSA-N tellanylidenegermanium Chemical compound [Te]=[Ge] JBQYATWDVHIOAR-UHFFFAOYSA-N 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
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- 238000007740 vapor deposition Methods 0.000 description 1
- 238000001039 wet etching Methods 0.000 description 1
- NAWDYIZEMPQZHO-UHFFFAOYSA-N ytterbium Chemical compound [Yb] NAWDYIZEMPQZHO-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- 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]
- G09G3/3225—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 an active matrix
- G09G3/3258—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 an active matrix with pixel circuitry controlling the voltage across the light-emitting element
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B44/00—Circuit arrangements for operating electroluminescent light sources
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Optics & Photonics (AREA)
- Theoretical Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Electroluminescent Light Sources (AREA)
- Control Of El Displays (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Thin Film Transistor (AREA)
- Electrodes Of Semiconductors (AREA)
Abstract
【解決手段】EL表示装置の各画素に設けられた酸化物半導体層を有するトランジスタ及び発光素子の環境温度による特性の変化を補正するために、画素部の周辺に環境温度によって発光素子の陰極の電位を補正するモニター回路を設ける。モニター回路は、モニター用電源線と、第1端子及びゲートがモニター用電源線に接続された酸化物半導体層を有するモニター用トランジスタと、モニター用トランジスタの接続されたモニター発光素子と、モニター発光素子に接続された電流源回路と、モニター発光素子及びモニター用トランジスタに印加される電圧に応じて発光素子の陰極の電位を補正する増幅回路とを有する。そしてモニター用電源線の電位は、画素の電源線の電位より小さいものとする。
【選択図】図1
Description
本実施の形態では本発明の一態様であるEL表示装置の一例について、図1乃至図4を参照して説明する。
本実施の形態では、上記実施の形態で説明したEL表示装置の各画素が具備する発光素子の構成について説明する。
本実施の形態では、上記実施の形態で説明したEL表示装置におけるトランジスタの構成について説明する。
本実施の形態では、上記実施の形態で説明したトランジスタの半導体層に用いることのできる酸化物半導体の一例について、図8(A)乃至(C)を用いて説明する。
本明細書に開示するEL表示装置は、様々な電子機器(遊技機も含む)に適用することができる。電子機器としては、例えば、テレビジョン装置(テレビ、またはテレビジョン受信機ともいう)、コンピュータ用などのモニタ、デジタルカメラ、デジタルビデオカメラ等のカメラ、デジタルフォトフレーム、携帯電話機(携帯電話、携帯電話装置ともいう)、携帯型ゲーム機、携帯情報端末、音響再生装置、パチンコ機などの大型ゲーム機などが挙げられる。上記実施の形態で説明したモニター回路を有するEL表示装置を具備する電子機器の例について説明する。
101 第1トランジスタ
102 第2トランジスタ
103 発光素子
104 信号線
105 ゲート線
106 電源線
107 電源線
110 モニター回路
111 第3トランジスタ
112 モニター用発光素子
113 電流源回路
114 モニター用電源線
115 ボルテージフォロワ回路
116 低電源電位線
500 矢印方向
501 トランジスタ
502 隔壁
503 基板
511 電極
513 EL層
514 電極
515 パッシベーション層
516 封止基板
700 基板
701 画素
702 画素部
703 ゲート線駆動回路
704 信号線駆動回路
705 ゲート線
706 信号線
707 電源回路
708 電源線
710 基板
711 導電層
712 絶縁層
713 酸化物半導体層
715 導電層
716 導電層
717 酸化物絶縁層
719 保護絶縁層
720 基板
721 導電層
722 絶縁層
723 酸化物半導体層
725 導電層
726 導電層
727 絶縁層
729 保護絶縁層
730 基板
731 導電層
732 絶縁層
733 酸化物半導体層
735 導電層
736 導電層
737 酸化物絶縁層
739 保護絶縁層
740 基板
741 導電層
742 絶縁層
743 酸化物半導体層
745 導電層
746 導電層
747 絶縁層
792 酸化物導電層
794 酸化物導電層
100B 画素
100G 画素
100R 画素
103B 発光素子
103G 発光素子
103R 発光素子
106B 電源線
106G 電源線
106R 電源線
107B 電源線
107G 電源線
107R 電源線
110B モニター回路
110G モニター回路
110R モニター回路
112B モニター用発光素子
112G モニター用発光素子
112R モニター用発光素子
113B 電流源回路
113G 電流源回路
113R 電流源回路
1600 絶縁層
1602 絶縁層
1604 結晶性酸化物半導体層
1606 結晶性酸化物半導体層
1608 酸化物半導体層
1700 筐体
1701 筐体
1702 表示部
1703 表示部
1704 蝶番
1705 電源入力端子
1706 操作キー
1707 スピーカ
1711 筐体
1712 表示部
1721 筐体
1722 表示部
1723 スタンド
1731 筐体
1732 表示部
1733 操作ボタン
1734 外部接続ポート
1735 スピーカ
1736 マイク
1737 操作ボタン
3000 画素
3001 第1トランジスタ
3002 第2トランジスタ
3003 発光素子
3004 信号線
3005 ゲート線
3006 電源線
3007 電源線
Claims (7)
- モニター用電源線と、第1端子及びゲートが前記モニター用電源線に電気的に接続されたモニター用トランジスタと、第1電極が前記モニター用トランジスタの第2端子に電気的に接続されたモニター発光素子と、前記モニター発光素子の第2電極に電気的に接続された電流源回路と、入力端子が前記モニター発光素子の第2電極に電気的に接続されたボルテージフォロワ回路と、を含むモニター回路と、
第1電極が前記ボルテージフォロワ回路の出力端子に電気的に接続された発光素子と、第1端子が前記発光素子の第2電極に電気的に接続され、第2端子が電源線に電気的に接続され、ゲートが選択トランジスタを介して信号線に電気的に接続された駆動トランジスタと、を含む画素とを有し、
前記モニター用トランジスタ及び前記駆動トランジスタは、酸化物半導体でなる半導体層を有するトランジスタであり、
前記モニター用電源線の電位は、前記電源線の電位より小さいことを特徴とするEL表示装置。 - 請求項1において、前記電源線の電位は、発光素子の発光材料毎に異なることを特徴とするEL表示装置。
- 請求項1または請求項2において、前記駆動トランジスタ及び前記モニター用トランジスタは、飽和領域で動作することを特徴とするEL表示装置。
- 請求項1乃至請求項3のいずれか一において、前記画素は、容量素子を有し、
前記容量素子の第1電極は前記電源線に電気的に接続され、前記容量素子の第2電極は前記駆動トランジスタのゲートに電気的に接続されることを特徴とするEL表示装置。 - 請求項1乃至請求項4のいずれか一において、前記駆動トランジスタ及び前記モニター用トランジスタはnチャネル型であることを特徴とするEL表示装置。
- 請求項1乃至請求項5のいずれか一において、前記ボルテージフォロワ回路の出力端子の電位は、前記前記モニター用電源線の電位及び前記電源線の電位より小さいことを特徴とするEL表示装置。
- 請求項1乃至請求項6のいずれか一に記載のEL表示装置を具備することを特徴とする電子機器。
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Also Published As
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US20120056537A1 (en) | 2012-03-08 |
JP2018077478A (ja) | 2018-05-17 |
JP2016167616A (ja) | 2016-09-15 |
JP6571150B2 (ja) | 2019-09-04 |
TW201214391A (en) | 2012-04-01 |
TWI556207B (zh) | 2016-11-01 |
JP5926515B2 (ja) | 2016-05-25 |
KR101833922B1 (ko) | 2018-03-02 |
US8487844B2 (en) | 2013-07-16 |
KR20120025980A (ko) | 2012-03-16 |
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