Colorful LED backlight FM &amp; diming and color mixing method

YANG Zong-yang; LIU Bo; ZHANG Xiao-bing; QI Ling-yun

doi:10.3788/YJYXS20153005.0872

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Colorful LED backlight FM & diming and color mixing method

Imaging Technology & Image Processing | 更新时间：2020-08-12

- Colorful LED backlight FM & diming and color mixing method
- Chinese Journal of Liquid Crystals and Displays Vol. 30, Issue 5, Pages: 872-876(2015)
- 作者机构：
  
  1. 总参陆航部军事代表局驻南京地区军事代表室, 江苏南京 211100
  2. 中航华东光电有限公司, 安徽芜湖 241002
  3. 特种显示国家工程实验室,安徽芜湖,241002
  4. 国家特种显示工程技术研究中心,安徽芜湖,241002
  5. 安徽工业大学电气信息学院, 安徽马鞍山 243002
- 作者简介：
- 基金信息：
- DOI：10.3788/YJYXS20153005.0872
  CLC： TN141.9
- Received：14 July 2014，
  
  Revised：17 November 2014，
  
  Published Online：17 November 2014，
  
  Published：05 October 2015
- 稿件说明：
移动端阅览
杨宗阳, 刘波, 章小兵, 祁凌云. 彩色LED背光源调频调光与混色方法[J]. 液晶与显示, 2015,30(5): 872-876

YANG Zong-yang, LIU Bo, ZHANG Xiao-bing, QI Ling-yun. Colorful LED backlight FM & diming and color mixing method[J]. , 2015,30(5): 872-876
杨宗阳, 刘波, 章小兵, 祁凌云. 彩色LED背光源调频调光与混色方法[J]. 液晶与显示, 2015,30(5): 872-876 DOI： 10.3788/YJYXS20153005.0872.

YANG Zong-yang, LIU Bo, ZHANG Xiao-bing, QI Ling-yun. Colorful LED backlight FM & diming and color mixing method[J]. , 2015,30(5): 872-876 DOI： 10.3788/YJYXS20153005.0872.

摘要

介绍了一种使用橙、绿、蓝三基色LED灯作为背光灯的平板显示模块背光源。本背光源亮度的调节通过变频调光技术实现。最终的标准白色光利用这种三色灯的调光脉冲高电平时间混色的方法得到

并按照光传感器输出的数据来微调三色灯调光脉冲高电平时间。这种调光与混色的方法可以有效改善由于温度变化带来的背光源亮度、色温变化与色坐标漂移。

Abstract

A kind of panel display module source using RGB LED as backlight is introduced in this paper. Frequency diming method is used to adjust backlight brightness. The final standard white light is gained by RGB diming pulse high level mixing color method. And besides

RGB diming pulse high level timing is tuned according to data from color sensor. Using the method

backlight brightness

color varies and coordinates drifts caused by temperature varies can be effectively improved.

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references

Pieter G, Noborn K, Robert F M, et al. LED light source for backlighting with integrated electronics:United States,US 2007/0046485 A1[P]. 2007-03-01.[2] Yeon-Tack Y. Backlight unit and driving method using the same:United States,US 2007/0097067 A1[P]. 2007-05-03.[3] 郭鹏.恒压型白光LED驱动电路研究与实现[D].杭州:浙江大学,2006. Guo P. Constant voltage white light LED driving circuit research and realization[D].Hangzhou:Zhejiang University Mater Dissertation,2006:23-25.(in Chinese)[4] 王凤岩,许建平,贺明智.超高亮LED的驱动[J].电源技术应用,2005(9):43-48. Wang F Y,Xu J P,He M Z. Exceed bright LED driving[J].Power Technique Application,2005(9):43-48. (in Chinese)[5] Perry J M. LED brightness control system for a wide-range of luminance control:United States,US 6,987,787 B1[P]. 2006-11-17.[6] Walter P. Apparatus and method to provide a hybrid linear/switching current source, such as for high-efficiency, wide dimming range light emitting diode(LED) backlight:United States,US 2008/0265793 A1[P]. 2008-10-30.[7] Albert L R, Ryan J R. Liquid crystal display backlight circuit:United States, US 6,392,358 B1[P]. 2002-05-21.[8] 刘波,章小兵.使用多色LED补色的背光源[J].液晶与显示,2010,25(5):699-701. Liu B, Zhang X B. Backlight unit with multi-color LED used for color complementation[J].Chinese Journal of Liquid Crystals and Displays, 2010,25(5):699-701.(in Chinese)

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Colorful LED backlight FM & diming and color mixing method

DOI：10.3788/YJYXS20153005.0872

摘要

Abstract

关键词

Keywords

references