JP5502266B2 - 表示装置 - Google Patents
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- JP5502266B2 JP5502266B2 JP2007191296A JP2007191296A JP5502266B2 JP 5502266 B2 JP5502266 B2 JP 5502266B2 JP 2007191296 A JP2007191296 A JP 2007191296A JP 2007191296 A JP2007191296 A JP 2007191296A JP 5502266 B2 JP5502266 B2 JP 5502266B2
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- 238000001514 detection method Methods 0.000 claims description 68
- 230000007613 environmental effect Effects 0.000 claims description 23
- 238000006243 chemical reaction Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 31
- 230000006866 deterioration Effects 0.000 description 17
- 230000007423 decrease Effects 0.000 description 7
- 238000005401 electroluminescence Methods 0.000 description 7
- 230000032683 aging Effects 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
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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]
- G09G3/3225—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
- G09G3/3233—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 current through the light-emitting element
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2300/00—Aspects of the constitution of display devices
- G09G2300/08—Active 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
- G09G2300/0809—Several active elements per pixel in active matrix panels
- G09G2300/0842—Several active elements per pixel in active matrix panels forming a memory circuit, e.g. a dynamic memory with one capacitor
- G09G2300/0861—Several active elements per pixel in active matrix panels forming a memory circuit, e.g. a dynamic memory with one capacitor with additional control of the display period without amending the charge stored in a pixel memory, e.g. by means of additional select electrodes
-
- 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
- G09G2320/029—Improving the quality of display appearance by monitoring one or more pixels in the display panel, e.g. by monitoring a fixed reference pixel
- G09G2320/0295—Improving the quality of display appearance by monitoring one or more pixels in the display panel, e.g. by monitoring a fixed reference pixel by monitoring each display pixel
-
- 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
- G09G2320/04—Maintaining the quality of display appearance
- G09G2320/041—Temperature compensation
-
- 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)
- Electroluminescent Light Sources (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Control Of El Displays (AREA)
Description
環境温度を検出する定電流駆動のモニター素子と、複数の定電流源と、前記モニター素子により前記画素の発光輝度に関わる電圧値を検出して前記電源回路の出力電圧を制御する信号を生成すると共に、前記検出部で検出された電圧値に応じて前記モニター素子の定電流源を切り換える検出部とで構成される。
複数の定電流値を出力する電流源と、前記電流源の一つを選択する検知部切換手段と、前記信号駆動回路に接続して前記信号線に供給する表示信号を補正する信号補正制御部を有する検知部とで構成される。
Claims (6)
- 複数のセレクトスイッチ線と、前記セレクトスイッチ線と交差する複数の信号線の各交差部近傍に形成した画素を備えた表示領域と、前記セレクトスイッチ線にセレクト信号を印加する表示用走査回路と、前記信号線に表示信号を供給する信号駆動回路と、前記複数の画素のそれぞれに前記信号駆動回路からの表示信号に応じた輝度で発光させるための電流を供給する電源線と、該電源線に電流を供給する電源回路を有する表示部と、
環境温度を検出する定電流駆動のモニター素子と、複数の定電流値を出力する電流源と、前記モニター素子の検出動作により前記画素の発光輝度に関わる電圧値を検出して前記電源回路の出力電圧を制御する電源制御信号と前記検出された電圧値に応じて前記モニター素子に供給する定電流値を変更する電流源制御信号を生成する検知部とを備え、
前記検知部では、環境温度の変動に対応して前記電流源の定電流値を切り換える検知部切換手段を有すると共に、前記表示領域の画素に電流を供給する電源回路の電圧を変更する電源制御部を有することを特徴とする表示装置。 - 請求項1において、
前記モニター素子は有機EL素子であり、前記複数の定電流値を出力する電流源は電流値が異なる高圧側電流源と低圧側電流源で構成され、
前記検知部切換手段は、前記高圧側電流源と低圧側電流源の各出力と前記有機EL素子との間に挿入されて、前記高圧側電流源と低圧側電流源の一方の出力と前記有機EL素子を択一的に選択する切り換えスイッチで構成したことを特徴とする表示装置。 - 請求項1において、
前記モニター素子は有機EL素子であり、前記複数の定電流値を出力する電流源は異なる抵抗値をもつ第1と第2の外付抵抗素子を備えたバンドギャップ型定電流源で構成され、
前記検知部切換手段は、前記第1と第2の外付抵抗素子と前記バンドギャップ型定電流源の間にそれぞれ挿入されて、前記有機EL素子に出力する前記バンドギャップ型定電流源の出力を択一的に選択する切り換えスイッチで構成したことを特徴とする表示装置。 - 複数のセレクトスイッチ線と、前記セレクトスイッチ線と交差する複数の信号線の各交差部近傍に形成した画素を備えた表示領域と、前記セレクトスイッチ線にセレクト信号を印加する表示用走査回路と、前記信号線に表示信号を供給する信号駆動回路と、前記複数の画素のそれぞれに前記信号駆動回路からの表示信号に応じた輝度で発光させるための電流を供給する電源線と、該電源線に電流を供給する電源回路を有する表示部と、
環境温度を検出する定電流駆動のモニター素子と、複数の定電流値を出力する電流源と、前記モニター素子の検出動作により前記画素の発光輝度に関わる電圧値を検出して前記電源回路の出力電圧を制御する電源制御信号と前記検出された電圧値に応じて前記モニター素子に供給する定電流値を変更する電流源制御信号を生成する検知部とを備え、
前記検知部では、環境温度の変動に対応して前記電流源の定電流値を切り替える検知部切換手段を有するとともに、前記表示領域の画素に電流を供給する電源回路の電圧を変更する電源制御部を有し、
前記モニター素子は有機EL素子であり、前記複数の定電流値を出力する電流源は電流値が異なる高圧側電流源と低圧側電流源で構成され、
前記検知部切換手段は、前記高圧側電流源と低圧側電流源の各出力と前記有機EL素子との間に挿入されて、前記高圧側電流源と低圧側電流源の一方の出力と有機EL素子を択一的に選択する第一切り換えスイッチで構成し、
前記セレクトスイッチ線と平行な方向に設けて前記画素内の有機EL素子の電圧値を検出する検出制御線と、
前記検出制御線に走査信号を印加する検出用走査回路と、
前記信号線に対して前記信号駆動回路と前記電流源の間を択一的に選択する第二切り換えスイッチを備え、
前記モニター素子は前記表示領域の画素の前記有機EL素子であり、
表示モードでは、前記第二切り換えスイッチは前記信号線に前記信号駆動回路を接続し、
検出モードでは、前記第二切り換えスイッチは前記信号線に前記電流源を接続し、前記検知部の検出結果に応じて前記電源制御部が前記電源回路の電圧を変更することを特徴とする表示装置。 - 請求項1において、
前記検知部は、前記モニター素子から出力された前記画素の発光輝度に関わる電圧値を受けるバッファと、前記バッファからの出力をAD変換して前記電源制御信号および前記電流源制御信号を生成するためのデジタル値を生成するAD変換部とを有することを特徴とする表示装置。 - 請求項4において、
前記検知部は、前記モニター素子から出力された前記画素の発光輝度に関わる電圧値を受けるバッファと、前記バッファからの出力をAD変換して前記電源制御信号および前記電流源制御信号を生成するためのデジタル値を生成するAD変換部とを有することを特徴とする表示装置。
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JP2007191296A JP5502266B2 (ja) | 2007-07-23 | 2007-07-23 | 表示装置 |
US12/216,670 US8264481B2 (en) | 2007-07-23 | 2008-07-09 | Display device |
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JP2007191296A JP5502266B2 (ja) | 2007-07-23 | 2007-07-23 | 表示装置 |
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JP2013114075A Division JP5547834B2 (ja) | 2013-05-30 | 2013-05-30 | 表示装置 |
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JP2009025742A JP2009025742A (ja) | 2009-02-05 |
JP5502266B2 true JP5502266B2 (ja) | 2014-05-28 |
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Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2008041884A (ja) * | 2006-08-04 | 2008-02-21 | Rohm Co Ltd | 半導体集積回路およびそれを備えた電子機器 |
JP5342111B2 (ja) * | 2007-03-09 | 2013-11-13 | 株式会社ジャパンディスプレイ | 有機el表示装置 |
JP2009031711A (ja) * | 2007-07-27 | 2009-02-12 | Samsung Sdi Co Ltd | 有機電界発光表示装置及びその駆動方法 |
JP4857351B2 (ja) * | 2009-02-06 | 2012-01-18 | キヤノン株式会社 | 画像表示装置 |
JP2011118301A (ja) * | 2009-12-07 | 2011-06-16 | Sony Corp | 表示装置およびその駆動方法ならびに電子機器 |
KR101089984B1 (ko) * | 2010-08-20 | 2011-12-05 | 한국과학기술원 | 디스플레이 디바이스의 열화 검출 장치 |
US8487844B2 (en) * | 2010-09-08 | 2013-07-16 | Semiconductor Energy Laboratory Co., Ltd. | EL display device and electronic device including the same |
JP5547834B2 (ja) * | 2013-05-30 | 2014-07-16 | 株式会社ジャパンディスプレイ | 表示装置 |
KR102097476B1 (ko) * | 2013-08-12 | 2020-04-07 | 삼성디스플레이 주식회사 | 유기 전계 발광 표시 장치 및 이의 구동 방법 |
WO2015162650A1 (ja) * | 2014-04-23 | 2015-10-29 | 株式会社Joled | 表示装置及びその制御方法 |
Family Cites Families (11)
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US6828950B2 (en) * | 2000-08-10 | 2004-12-07 | Semiconductor Energy Laboratory Co., Ltd. | Display device and method of driving the same |
JP4884609B2 (ja) * | 2000-08-10 | 2012-02-29 | 株式会社半導体エネルギー研究所 | 表示装置及びその駆動方法、並びに電子機器 |
JP2002229513A (ja) * | 2001-02-06 | 2002-08-16 | Tohoku Pioneer Corp | 有機el表示パネルの駆動装置 |
TW529009B (en) * | 2001-08-08 | 2003-04-21 | Chi Mei Electronics Corp | Switching unit of Gamma voltage signal |
JP4120326B2 (ja) * | 2002-09-13 | 2008-07-16 | ソニー株式会社 | 電流出力型駆動回路およびディスプレイデバイス |
JP4539963B2 (ja) * | 2004-06-10 | 2010-09-08 | 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同表示装置を搭載した電子機器 |
JP4896446B2 (ja) | 2004-06-29 | 2012-03-14 | 株式会社半導体エネルギー研究所 | 表示装置及びその駆動方法並びに電子機器 |
JP4877872B2 (ja) * | 2004-07-30 | 2012-02-15 | 株式会社半導体エネルギー研究所 | 表示装置及びアクティブマトリクス型表示装置 |
JP4707090B2 (ja) * | 2005-03-28 | 2011-06-22 | 東北パイオニア株式会社 | 発光表示パネルの駆動装置 |
JP5084003B2 (ja) * | 2005-10-28 | 2012-11-28 | 東北パイオニア株式会社 | 発光表示パネルの駆動装置および駆動方法 |
JP2009025741A (ja) * | 2007-07-23 | 2009-02-05 | Hitachi Displays Ltd | 画像表示装置とその画素劣化補正方法 |
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2007
- 2007-07-23 JP JP2007191296A patent/JP5502266B2/ja active Active
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2008
- 2008-07-09 US US12/216,670 patent/US8264481B2/en active Active
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US20090027374A1 (en) | 2009-01-29 |
US8264481B2 (en) | 2012-09-11 |
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