Direct-lit LED backlight technology for improving the picture quality

WU Li; SHEN Jian; XU Li-guo

doi:10.3788/YJYXS20142906.1106

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Direct-lit LED backlight technology for improving the picture quality

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- Direct-lit LED backlight technology for improving the picture quality
- Chinese Journal of Liquid Crystals and Displays Vol. 29, Issue 6, Pages: 1106-1110(2014)
- 作者机构：
  
  中航华东光电有限公司安徽省现代显示技术重点实验室国家特种显示工程技术研究中心特种显示国家工程实验室, 安徽芜湖 241002
- 作者简介：
- 基金信息：
- DOI：10.3788/YJYXS20142906.1106
  CLC： TN141.9
- Received：01 July 2014，
  
  Revised：14 July 2014，
  
  Published Online：30 July 2014，
  
  Published：05 December 2014
- 稿件说明：
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吴丽, 沈健, 徐立国. 改善显示品质的直下式LED背光技术[J]. 液晶与显示, 2014,29(6): 1106-1110

WU Li, SHEN Jian, XU Li-guo. Direct-lit LED backlight technology for improving the picture quality[J]. , 2014,29(6): 1106-1110
吴丽, 沈健, 徐立国. 改善显示品质的直下式LED背光技术[J]. 液晶与显示, 2014,29(6): 1106-1110 DOI： 10.3788/YJYXS20142906.1106.

WU Li, SHEN Jian, XU Li-guo. Direct-lit LED backlight technology for improving the picture quality[J]. , 2014,29(6): 1106-1110 DOI： 10.3788/YJYXS20142906.1106.

摘要

通过理论分析，在窄色域液晶屏的背光中选择合适谱线的RGB三基色LED背光，可以将显示器的色域从40%提升至70%。试验结果与理论相符合，但是三基色直下式背光的混光比为1.3：1，比全白灯背光的1：1大。在三基色LED背光中加入LED白灯，能够降低混光比。白光灯的亮度逐步增加时，色域会降低。当色域从70.2%下降到63.7%时，白灯发出的亮度占总亮度的30%，混光比也降低为1.1：1。

Abstract

Through theoretical analysis

RGB three primaries LED backlighting with appropriate line is chosen in a LCD backlight with narrow gamut

which can raise the color gamut from 40% to 70%. And the test fitted well with analysis

but the mixing ratio of three primaries direct-lit backlight is 1.3:1

larger than 1:1 of full white backlight. The white LEDs were doped into three primaries LED backlight

which can reduce the mixing ratio. As the brightness of the white light increases

color gamut will be reduced. When color gamut changes from 70.2% to 63.7%

the white luminance is 30% of the total luminance

and the mixing ratio is descended to 1.1:1.

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Keywords

references

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