JPWO2008047862A1 - Led駆動装置、照明装置および表示装置 - Google Patents
Led駆動装置、照明装置および表示装置 Download PDFInfo
- Publication number
- JPWO2008047862A1 JPWO2008047862A1 JP2008539862A JP2008539862A JPWO2008047862A1 JP WO2008047862 A1 JPWO2008047862 A1 JP WO2008047862A1 JP 2008539862 A JP2008539862 A JP 2008539862A JP 2008539862 A JP2008539862 A JP 2008539862A JP WO2008047862 A1 JPWO2008047862 A1 JP WO2008047862A1
- Authority
- JP
- Japan
- Prior art keywords
- led
- driving device
- current
- drive voltage
- light
- 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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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
-
- 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
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/20—Controlling the colour of the light
-
- 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
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2310/00—Command of the display device
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/0235—Field-sequential colour display
-
- 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
- G09G2320/0633—Adjustment of display parameters for control of overall brightness by amplitude 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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Led Devices (AREA)
- Liquid Crystal (AREA)
Abstract
Description
2 ライトパイプ
3、12 カラーホイール
4、13 制御部
5、14 反射型デバイス
6、15 投射レンズ
7、16 投射スクリーン
11 LED光源
Q1001〜Q1010、Q2001 トランジスタ
R1001〜R1015、R2001 抵抗
Claims (5)
- タイミング信号に応じて第1の駆動電圧と第2の駆動電圧とを切り替える駆動電圧切替手段と、
前記第1の駆動電圧又は前記第2の駆動電圧を印加され、LEDに流れる電流を決定するフィードバック回路とを備え、
前記フィードバック回路は、前記タイミング信号に応じてLEDに流れる電流を制御する電流制御手段を備えることを特徴とするLED駆動装置。 - 前記電流制御手段は、前記タイミング信号に応じてLEDに流れる電流を決定する対向を切り替える抵抗切替手段であることを特徴とする請求項1記載のLED駆動装置。
- 請求項1又は2記載のLED駆動装置と、
前記LED駆動装置によって駆動されるLEDとを備えることを特徴とする照明装置。 - 請求項1又は2記載のLED駆動装置と、
前記LED駆動装置によって駆動される緑色LEDと、
赤色LEDと、
青色LEDと、
前記緑色LED、赤色LED及び青色LEDを切り替えて発光させる制御手段と、
前記制御手段によって前記緑色LED、赤色LED及び青色RGBの発光と同期して制御され、前記緑色LED、赤色LED及び青色RGBによって発光された光を変調する反射型デバイスと、
前記反射型デバイスによって反射された光を投影する投影光学系とを備えることを特徴とする表示装置。 - 請求項1又は2記載のLED駆動装置と、
前記LED駆動装置によって駆動されるLEDの駆動電流を切り替えて発光させる制御手段と、バックライトの組み合わせで、エリアアクティブを備える事を特徴とする直視型表示装置。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008539862A JP5016607B2 (ja) | 2006-10-19 | 2007-10-18 | Led駆動装置、照明装置および表示装置 |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006285323 | 2006-10-19 | ||
JP2006285323 | 2006-10-19 | ||
PCT/JP2007/070338 WO2008047862A1 (fr) | 2006-10-19 | 2007-10-18 | Dispositif de commande de diodes électroluminescentes, dispositif d'éclairage et dispositif d'affichage |
JP2008539862A JP5016607B2 (ja) | 2006-10-19 | 2007-10-18 | Led駆動装置、照明装置および表示装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPWO2008047862A1 true JPWO2008047862A1 (ja) | 2010-02-25 |
JP5016607B2 JP5016607B2 (ja) | 2012-09-05 |
Family
ID=39314080
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2008539862A Expired - Fee Related JP5016607B2 (ja) | 2006-10-19 | 2007-10-18 | Led駆動装置、照明装置および表示装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US8310173B2 (ja) |
EP (1) | EP2096903A4 (ja) |
JP (1) | JP5016607B2 (ja) |
CN (1) | CN101543137B (ja) |
WO (1) | WO2008047862A1 (ja) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8648358B2 (en) | 2009-02-19 | 2014-02-11 | Sharp Kabushiki Kaisha | Light emitting device, planar light source, and display device |
JP2012099728A (ja) | 2010-11-04 | 2012-05-24 | Nikon Corp | 発光素子パッケージ及び表示装置 |
CN102214451B (zh) * | 2011-06-10 | 2012-11-28 | 华东师范大学 | 一种基于光波长带通滤波器的数字光处理显示系统 |
WO2014087876A1 (ja) * | 2012-12-04 | 2014-06-12 | シャープ株式会社 | 画像表示装置およびその駆動方法 |
KR101902391B1 (ko) * | 2016-12-22 | 2018-10-01 | 오스템임플란트 주식회사 | 구강 내부의 영상 데이터 처리 방법 및 구강 스캐너 |
CN109254487B (zh) * | 2018-09-17 | 2021-02-19 | 苏州佳世达光电有限公司 | 投影装置 |
CN111341230A (zh) * | 2018-12-19 | 2020-06-26 | 青岛海信激光显示股份有限公司 | 投影显示装置及其控制方法 |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5748164A (en) * | 1994-12-22 | 1998-05-05 | Displaytech, Inc. | Active matrix liquid crystal image generator |
US5767828A (en) | 1995-07-20 | 1998-06-16 | The Regents Of The University Of Colorado | Method and apparatus for displaying grey-scale or color images from binary images |
US5812303A (en) * | 1996-08-15 | 1998-09-22 | Texas Instruments Incorporated | Light amplitude modulation with neutral density filters |
JP4474562B2 (ja) | 2000-04-28 | 2010-06-09 | 東芝ライテック株式会社 | 発光ダイオード駆動装置 |
JP2002203988A (ja) | 2000-12-28 | 2002-07-19 | Toshiba Lsi System Support Kk | 発光素子駆動回路 |
JP3653078B2 (ja) * | 2002-12-12 | 2005-05-25 | 東光株式会社 | スイッチング定電流電源装置 |
US7122973B1 (en) * | 2002-12-23 | 2006-10-17 | Kevin Thomas Ivers | Light-generating apparatus control system |
JP2004274872A (ja) * | 2003-03-07 | 2004-09-30 | Toko Inc | スイッチング定電流電源装置 |
JP4030903B2 (ja) * | 2003-03-14 | 2008-01-09 | 株式会社小糸製作所 | 車両用灯具 |
JP4187565B2 (ja) * | 2003-03-28 | 2008-11-26 | 株式会社モリテックス | 照明装置 |
JP2004311635A (ja) * | 2003-04-04 | 2004-11-04 | Olympus Corp | 駆動装置及びそれを用いた照明装置、並びに、その照明装置を用いた表示装置 |
JP2005005112A (ja) | 2003-06-11 | 2005-01-06 | Yazaki Corp | Led駆動回路 |
JP4370901B2 (ja) | 2003-10-15 | 2009-11-25 | パナソニック電工株式会社 | Led点灯装置 |
US6995519B2 (en) * | 2003-11-25 | 2006-02-07 | Eastman Kodak Company | OLED display with aging compensation |
KR100659531B1 (ko) * | 2003-11-27 | 2006-12-19 | 삼성에스디아이 주식회사 | 백라이트 구동회로 |
US7527388B2 (en) * | 2003-12-09 | 2009-05-05 | Surefire Llc | Flashlight with detented rotary control |
JP2005235826A (ja) * | 2004-02-17 | 2005-09-02 | Pioneer Electronic Corp | 点灯装置および照明装置 |
US7108413B2 (en) * | 2004-03-11 | 2006-09-19 | Avago Technologies Ecbu Ip (Singapore) Pte. Ltd. | Sampling for color control feedback using an optical cable |
-
2007
- 2007-10-18 JP JP2008539862A patent/JP5016607B2/ja not_active Expired - Fee Related
- 2007-10-18 EP EP07830072A patent/EP2096903A4/en not_active Withdrawn
- 2007-10-18 WO PCT/JP2007/070338 patent/WO2008047862A1/ja active Application Filing
- 2007-10-18 CN CN2007800435622A patent/CN101543137B/zh not_active Expired - Fee Related
- 2007-10-18 US US12/446,040 patent/US8310173B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
EP2096903A4 (en) | 2011-04-20 |
US8310173B2 (en) | 2012-11-13 |
US20100295466A1 (en) | 2010-11-25 |
JP5016607B2 (ja) | 2012-09-05 |
CN101543137B (zh) | 2012-11-28 |
WO2008047862A1 (fr) | 2008-04-24 |
EP2096903A1 (en) | 2009-09-02 |
CN101543137A (zh) | 2009-09-23 |
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