LED背光液晶屏的低色温调节及光谱分析

杨超普; 方文卿; 刘明宝; 阳帆

doi:10.3788/fgxb20194012.1531

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LED背光液晶屏的低色温调节及光谱分析

器件制备及器件物理 | 更新时间：2020-08-12

- LED背光液晶屏的低色温调节及光谱分析
- Low Color Temperature Adjustment and Spectral Analysis of LED Backlit LCD
- 发光学报 2019年40卷第12期页码：1531-1537
- 作者机构：
  
  1. 南昌大学国家硅基LED工程技术研究中心, 江西南昌 330047
  2. 南昌大学材料科学与工程学院, 江西南昌 330031
  3. 商洛学院化学工程与现代材料学院, 陕西商洛 726000
  4. 商洛学院陕西尾矿资源综合利用重点实验室, 陕西商洛 726000
- 作者简介：
- 基金信息：
  
  国家重点研发计划"();战略性先进电子材料"();重点专项（2017YFB0403700）();国家自然科学基金（61864008）();商洛学院服务地
- DOI：10.3788/fgxb20194012.1531
  中图分类号： O433.4;TN942.1
- 收稿日期：2019-06-28，
  
  修回日期：2019-08-17，
  
  网络出版日期：2019-12-05，
  
  纸质出版日期：2019-12-05
- 稿件说明：
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杨超普, 方文卿, 刘明宝等. LED背光液晶屏的低色温调节及光谱分析[J]. 发光学报, 2019,40(12): 1531-1537

YANG Chao-pu, FANG Wen-qing, LIU Ming-bao etc. Low Color Temperature Adjustment and Spectral Analysis of LED Backlit LCD[J]. Chinese Journal of Luminescence, 2019,40(12): 1531-1537
杨超普, 方文卿, 刘明宝等. LED背光液晶屏的低色温调节及光谱分析[J]. 发光学报, 2019,40(12): 1531-1537 DOI： 10.3788/fgxb20194012.1531.

YANG Chao-pu, FANG Wen-qing, LIU Ming-bao etc. Low Color Temperature Adjustment and Spectral Analysis of LED Backlit LCD[J]. Chinese Journal of Luminescence, 2019,40(12): 1531-1537 DOI： 10.3788/fgxb20194012.1531.

摘要

为了便捷准确地调节出8位LED背光液晶屏超低色温，通过Adobe Photoshop软件设置填充色RGB数值，在LED背光液晶屏上显示色块，结合自制手机屏幕蓝光吸收膜，实现超低色温调节。通过光谱分析研究了LED背光液晶屏1931 CIE-

XYZ

标准色度系统色坐标

值、色容差、主波长、色纯度、峰值波长、质心波长、半峰宽、显色指数

随色温的变化，实现了8位LED背光液晶屏1 000 K超低色温调节；6 500~1 000 K 10个实测色温与目标色温的平均相对误差为0.349%，平均绝对误差为7.1 K，均可保证白平衡。光谱分析结果表明，增加自制手机屏幕蓝光吸收膜后，同一色温下会使质心波长平均下降15 nm。当色温小于4 100 K时，同一色温下半峰宽减小约4 nm，其他6个参数影响不大。该色温调节方法与结论对防蓝光膜效果最佳优化及液晶屏相关研究具有参考价值。

Abstract

For convenient and accurate adjustment of ultra-low color temperature of 8-bit LED backlit LCD

the fill color RGB value was set through the Adobe Photoshop

display color blocks on LED backlit LCD

combined with self-made blue light absorption film of mobile phone screen

achieving ultra-low color temperature adjustment. 1931 CIE-

XYZ

standard chromaticity system color coordinate

value

color tolerance

main wavelength

color purity

peak wavelength

centroid wavelength

half peak width

color rendering index

of LED backlit LCD

were studied by spectral analysis. We realized 8 bit LED backlit LCD 1 000 K ultra-low color temperature adjustment. The average relative error of the 10 measured 6 500-1 000 K color temperatures and the target color temperature is 0.349%

the average absolute error is 7.1 K

which can guarantee the white balance. According to the spectral analysis

after adding the self-made blue light absorption film of mobile phone screen

the centroid wavelength will decrease by 15 nm on average at the same color temperature. When the color temperature is less than 4 100 K

the half-peak width of the same color temperature is about 4 nm smaller. The other six parameters have little influence. The method and conclusion are valuable for optimizing the effect of anti-blue light film and the research of LCD.

关键词

Keywords

references

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