CN103151009B - 一种背光调光电路及其调光方法、液晶显示器 - Google Patents
一种背光调光电路及其调光方法、液晶显示器 Download PDFInfo
- Publication number
- CN103151009B CN103151009B CN201310059850.4A CN201310059850A CN103151009B CN 103151009 B CN103151009 B CN 103151009B CN 201310059850 A CN201310059850 A CN 201310059850A CN 103151009 B CN103151009 B CN 103151009B
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- Prior art keywords
- signal
- comparer
- operational amplifier
- voltage
- backlight
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000005286 illumination Methods 0.000 claims abstract description 22
- 230000000052 comparative effect Effects 0.000 claims abstract description 9
- 230000008859 change Effects 0.000 description 7
- 230000009467 reduction Effects 0.000 description 5
- 238000004134 energy conservation Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000008447 perception Effects 0.000 description 2
- 238000005282 brightening Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Classifications
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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
- G09G3/34—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
-
- 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
- G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
- G09G2330/02—Details of power systems and of start or stop of display operation
-
- 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
- G09G3/36—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 using liquid crystals
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Liquid Crystal Display Device Control (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal (AREA)
Abstract
Description
Claims (8)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201310059850.4A CN103151009B (zh) | 2013-02-26 | 2013-02-26 | 一种背光调光电路及其调光方法、液晶显示器 |
US13/878,226 US8829807B1 (en) | 2013-02-26 | 2013-03-05 | Backlight dimming circuit, dimming method of the same and liquid crystal display thereof |
PCT/CN2013/072179 WO2014131201A1 (zh) | 2013-02-26 | 2013-03-05 | 一种背光调光电路及其调光方法、液晶显示器 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201310059850.4A CN103151009B (zh) | 2013-02-26 | 2013-02-26 | 一种背光调光电路及其调光方法、液晶显示器 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN103151009A CN103151009A (zh) | 2013-06-12 |
CN103151009B true CN103151009B (zh) | 2015-08-26 |
Family
ID=48549037
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201310059850.4A Active CN103151009B (zh) | 2013-02-26 | 2013-02-26 | 一种背光调光电路及其调光方法、液晶显示器 |
Country Status (2)
Country | Link |
---|---|
CN (1) | CN103151009B (zh) |
WO (1) | WO2014131201A1 (zh) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9324277B2 (en) | 2013-12-06 | 2016-04-26 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Backlight driving circuit, liquid crystal display device and drive method |
CN103680422B (zh) * | 2013-12-06 | 2016-02-03 | 深圳市华星光电技术有限公司 | 一种背光源驱动电路及液晶显示装置和驱动方法 |
CN105469747B (zh) * | 2014-08-25 | 2019-08-16 | 深圳富泰宏精密工业有限公司 | 电子装置及其背光驱动电路 |
CN104570714A (zh) * | 2015-01-12 | 2015-04-29 | 深圳市宏嘉科创电子有限公司 | 一种低功耗的蓝牙手表 |
CN104900190B (zh) | 2015-06-23 | 2018-02-06 | 京东方科技集团股份有限公司 | 电源电路、有机发光二极管显示装置 |
CN107426879B (zh) * | 2017-08-31 | 2020-09-15 | 鲁东大学 | 一种基于pwm的电压调光led控制*** |
CN108227810A (zh) * | 2018-02-02 | 2018-06-29 | 北京克莱爱尔电力科技有限公司 | 一种节能限流电路及具有该节能限流电路的稳压源 |
CN113835287B (zh) * | 2019-06-20 | 2022-11-22 | 青岛海信激光显示股份有限公司 | 激光投影设备 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101751875A (zh) * | 2008-12-12 | 2010-06-23 | 深圳Tcl新技术有限公司 | 背光可调的液晶显示器及其实现方法 |
CN102223741A (zh) * | 2010-04-14 | 2011-10-19 | 日隆电子股份有限公司 | 应用在led驱动器的控制电路及方法 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03124774U (zh) * | 1990-03-28 | 1991-12-17 | ||
JPH08294273A (ja) * | 1995-04-20 | 1996-11-05 | Fujitsu General Ltd | 出力電圧の制御方法 |
CN100582877C (zh) * | 2006-07-12 | 2010-01-20 | 群康科技(深圳)有限公司 | 脉冲调光电路 |
US20100109537A1 (en) * | 2006-10-25 | 2010-05-06 | Panasonic Electric Works Co., Ltd. | Led lighting circuit and illuminating apparatus using the same |
KR20090018472A (ko) * | 2007-08-17 | 2009-02-20 | 삼성전자주식회사 | 백라이트 유닛, 이를 포함하는 디스플레이장치 및 그제어방법 |
CN101436386B (zh) * | 2007-11-15 | 2011-06-08 | 中华映管股份有限公司 | 背光模组的驱动装置 |
KR20090128255A (ko) * | 2008-06-10 | 2009-12-15 | 삼성전자주식회사 | 아날로그-디지털 컨버터와 이를 포함하는 표시 장치 및 그구동 방법 |
KR100992412B1 (ko) * | 2008-12-30 | 2010-11-05 | 주식회사 실리콘웍스 | 직류-직류 변환기 |
CN202394501U (zh) * | 2011-11-23 | 2012-08-22 | 深圳市华星光电技术有限公司 | Led背光驱动电路和led背光模组 |
CN102843828B (zh) * | 2012-08-06 | 2014-05-14 | 电子科技大学 | 一种pwm调制电路 |
KR20140042310A (ko) * | 2012-09-28 | 2014-04-07 | 엘지디스플레이 주식회사 | Dc-dc 변환기 제어 회로와 이를 이용한 영상 표시장치 및 그 구동방법 |
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2013
- 2013-02-26 CN CN201310059850.4A patent/CN103151009B/zh active Active
- 2013-03-05 WO PCT/CN2013/072179 patent/WO2014131201A1/zh active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101751875A (zh) * | 2008-12-12 | 2010-06-23 | 深圳Tcl新技术有限公司 | 背光可调的液晶显示器及其实现方法 |
CN102223741A (zh) * | 2010-04-14 | 2011-10-19 | 日隆电子股份有限公司 | 应用在led驱动器的控制电路及方法 |
Also Published As
Publication number | Publication date |
---|---|
CN103151009A (zh) | 2013-06-12 |
WO2014131201A1 (zh) | 2014-09-04 |
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Address after: 518132 No. 9-2 Ming Avenue, Guangming New District, Guangdong, Shenzhen Patentee after: TCL China Star Optoelectronics Technology Co.,Ltd. Address before: 518132 No. 9-2 Ming Avenue, Guangming New District, Guangdong, Shenzhen Patentee before: Shenzhen China Star Optoelectronics Technology Co.,Ltd. |
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Effective date of registration: 20210309 Address after: No.109, Kangping Road, Liuyang economic and Technological Development Zone, Changsha, Hunan 410300 Patentee after: Changsha Huike optoelectronics Co.,Ltd. Address before: 9-2 Tangming Avenue, Guangming New District, Shenzhen City, Guangdong Province Patentee before: TCL China Star Optoelectronics Technology Co.,Ltd. |