JP5414141B2 - 情報処理装置 - Google Patents
情報処理装置 Download PDFInfo
- Publication number
- JP5414141B2 JP5414141B2 JP2005120398A JP2005120398A JP5414141B2 JP 5414141 B2 JP5414141 B2 JP 5414141B2 JP 2005120398 A JP2005120398 A JP 2005120398A JP 2005120398 A JP2005120398 A JP 2005120398A JP 5414141 B2 JP5414141 B2 JP 5414141B2
- Authority
- JP
- Japan
- Prior art keywords
- light emitting
- emitting element
- power supply
- element group
- white
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 230000010365 information processing Effects 0.000 title claims description 11
- 230000006870 function Effects 0.000 description 13
- 238000010586 diagram Methods 0.000 description 3
- 239000004973 liquid crystal related substance Substances 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 239000000470 constituent Substances 0.000 description 2
- 238000005868 electrolysis reaction Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 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
- G09G3/34—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 by control of light from an independent source
- G09G3/3406—Control of illumination source
- G09G3/342—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines
- G09G3/3426—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines the different display panel areas being distributed in two dimensions, e.g. matrix
-
- 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
- G09G2320/0233—Improving the luminance or brightness uniformity across the screen
-
- 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
- G09G2320/06—Adjustment of display parameters
- G09G2320/0606—Manual adjustment
-
- 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
- G09G2320/06—Adjustment of display parameters
- G09G2320/0626—Adjustment of display parameters for control of overall brightness
- G09G2320/064—Adjustment of display parameters for control of overall brightness by time modulation of the brightness of the illumination source
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/36—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the display of a graphic pattern, e.g. using an all-points-addressable [APA] memory
- G09G5/363—Graphics controllers
Landscapes
- 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)
- Liquid Crystal Display Device Control (AREA)
- Liquid Crystal (AREA)
Description
Claims (1)
- 映像信号に応じて画像を表示する表示パネルと、
前記表示パネルを証明する光源であって、3つ以上の複数の発光素子群を有し、各発光素子群は、直列に接続された複数のダイオードを有し、前記複数の発光素子群の内の第1の発光素子群に属する第1の発光ダイオードおよび前記複数の発光素子群の内の第2の発光素子群に属する第2の発光ダイオードは、前記複数の発光素子群の内の第3の発光素子群に属する第3の発光ダイオードと前記第3の発光素子群に属する第4の発光ダイオードとの間に位置し、各発光素子群の内の前記複数の発光ダイオードのカソード側はアースに接続されていない、光源と、
輝度制御信号を発生する輝度信号発生回路と、
前記複数の発光素子群に対して設けられた複数の制御回路であって、前記一つの制御回路は一つの発光素子群を駆動し、前記一つの発光素子群の内の直列接続された複数の発光ダイオードに流れる電流を検出し、前記輝度制御信号および前記検出された電流に基づいて前記直列接続された複数の発光ダイオードに供給される電圧の値を調整する、複数の制御回路と
を具備する情報処理装置。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005120398A JP5414141B2 (ja) | 2005-04-18 | 2005-04-18 | 情報処理装置 |
US11/405,502 US20060232530A1 (en) | 2005-04-18 | 2006-04-18 | Information processing apparatus |
US12/544,416 US20100001938A1 (en) | 2005-04-18 | 2009-08-20 | Information processing apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005120398A JP5414141B2 (ja) | 2005-04-18 | 2005-04-18 | 情報処理装置 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2012164113A Division JP5178942B2 (ja) | 2012-07-24 | 2012-07-24 | 情報処理装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2006301131A JP2006301131A (ja) | 2006-11-02 |
JP5414141B2 true JP5414141B2 (ja) | 2014-02-12 |
Family
ID=37108034
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2005120398A Active JP5414141B2 (ja) | 2005-04-18 | 2005-04-18 | 情報処理装置 |
Country Status (2)
Country | Link |
---|---|
US (2) | US20060232530A1 (ja) |
JP (1) | JP5414141B2 (ja) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5060123B2 (ja) * | 2006-12-22 | 2012-10-31 | 株式会社東芝 | 情報処理装置 |
KR101289639B1 (ko) * | 2008-07-04 | 2013-07-30 | 엘지디스플레이 주식회사 | 백라이트 유닛의 광원 구동장치 및 방법 |
TWI502356B (zh) * | 2013-07-05 | 2015-10-01 | Wistron Corp | 具有同步控制亮度之顯示裝置的電子裝置及其運作方法 |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63133191A (ja) * | 1986-11-26 | 1988-06-04 | 岩崎電気株式会社 | 線上光源点灯回路 |
JP4013420B2 (ja) * | 1999-09-06 | 2007-11-28 | セイコーエプソン株式会社 | 照明装置及びその駆動方法、液晶装置および電子機器 |
DE60103445T2 (de) * | 2000-03-29 | 2005-06-02 | Nec Tokin Ceramics Corp. | Vielschicht-Piezoaktor mit Elektroden mit verstärkter Leitfähigkeit |
JP3284128B1 (ja) * | 2000-05-12 | 2002-05-20 | ローム株式会社 | 携帯型機器における表示装置の照明用led素子駆動回路 |
JP4158338B2 (ja) * | 2000-06-06 | 2008-10-01 | 株式会社デンソー | インジェクタ用圧電体素子 |
JP4461576B2 (ja) * | 2000-06-19 | 2010-05-12 | 東芝ライテック株式会社 | Led光源装置 |
US6521879B1 (en) * | 2001-04-20 | 2003-02-18 | Rockwell Collins, Inc. | Method and system for controlling an LED backlight in flat panel displays wherein illumination monitoring is done outside the viewing area |
US6791636B2 (en) * | 2001-05-10 | 2004-09-14 | Lumilecs Lighting U.S., Llc | Backlight for a color LCD |
KR100870007B1 (ko) * | 2002-06-25 | 2008-11-21 | 삼성전자주식회사 | 백라이트 구동 장치 |
JP2004233809A (ja) * | 2003-01-31 | 2004-08-19 | Seiko Epson Corp | 面光源ユニット、それを用いた電気光学装置並びに電子機器 |
JP4187565B2 (ja) * | 2003-03-28 | 2008-11-26 | 株式会社モリテックス | 照明装置 |
KR100966442B1 (ko) * | 2003-12-29 | 2010-06-28 | 엘지디스플레이 주식회사 | 액정 표시소자의 백-라이트 장치 |
TWI230827B (en) * | 2004-02-12 | 2005-04-11 | Au Optronics Corp | Liquid crystal display module |
TWI252951B (en) * | 2004-03-04 | 2006-04-11 | Au Optronics Corp | Backlight unit and display device |
JP4241487B2 (ja) * | 2004-04-20 | 2009-03-18 | ソニー株式会社 | Led駆動装置、バックライト光源装置及びカラー液晶表示装置 |
JP4720099B2 (ja) * | 2004-04-20 | 2011-07-13 | ソニー株式会社 | 定電流駆動装置、バックライト光源装置及びカラー液晶表示装置 |
JP2006127798A (ja) * | 2004-10-26 | 2006-05-18 | Toshiba Matsushita Display Technology Co Ltd | 照明装置および液晶表示装置 |
US7456829B2 (en) * | 2004-12-03 | 2008-11-25 | Hewlett-Packard Development Company, L.P. | Methods and systems to control electronic display brightness |
-
2005
- 2005-04-18 JP JP2005120398A patent/JP5414141B2/ja active Active
-
2006
- 2006-04-18 US US11/405,502 patent/US20060232530A1/en not_active Abandoned
-
2009
- 2009-08-20 US US12/544,416 patent/US20100001938A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
US20060232530A1 (en) | 2006-10-19 |
JP2006301131A (ja) | 2006-11-02 |
US20100001938A1 (en) | 2010-01-07 |
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