基于金属-电介质-金属结构的滤波器提升LCD色域的研究

孙岩; 张弛; 李小帅; 杨艳灵; 马红梅; 孙玉宝

doi:10.3788/YJYXS20203501.0019

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基于金属-电介质-金属结构的滤波器提升LCD色域的研究

材料与器件 | 更新时间：2020-07-05

- 基于金属-电介质-金属结构的滤波器提升LCD色域的研究
- Improving the color gamut of LCD by a filter based on metal-dielectric-metal structure
- 液晶与显示 2020年35卷第1期页码：19-25
- 作者机构：
  
  河北工业大学应用物理系, 天津 300401
- 作者简介：
  
  [ "孙岩(1994-), 女, 河北秦皇岛人, 硕士研究生, 2017年于邢台学院获得学士学位, 主要从事液晶器件方面的研究。Email:1253393983@qq.com" ]
  孙玉宝(1975-), 男, 河北沧州人, 博士, 教授, 2010年于河北工业大学获得博士学位, 主要从事液晶显示器件方面的研究。E-mail:sun_yubao@163.com
- 基金信息：
  
  国家重点研发计划(No.2018YFB0703701);国家自然科学基金(No.61475042)
- DOI：10.3788/YJYXS20203501.0019
  中图分类号： TN27
- 收稿日期：2019-07-19，
  
  修回日期：2019-09-29，
  
  录用日期：2019-9-29，
  
  纸质出版日期：2020-02-05
- 稿件说明：
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孙岩, 张弛, 李小帅, 等. 基于金属-电介质-金属结构的滤波器提升LCD色域的研究[J]. 液晶与显示, 2020,35(1):19-25.

Yan SUN, Chi ZHANG, Xiao-shuai LI, et al. Improving the color gamut of LCD by a filter based on metal-dielectric-metal structure[J]. Chinese journal of liquid crystals and displays, 2020, 35(1): 19-25.
孙岩, 张弛, 李小帅, 等. 基于金属-电介质-金属结构的滤波器提升LCD色域的研究[J]. 液晶与显示, 2020,35(1):19-25. DOI： 10.3788/YJYXS20203501.0019.

Yan SUN, Chi ZHANG, Xiao-shuai LI, et al. Improving the color gamut of LCD by a filter based on metal-dielectric-metal structure[J]. Chinese journal of liquid crystals and displays, 2020, 35(1): 19-25. DOI： 10.3788/YJYXS20203501.0019.

摘要

为了拓宽LCD的色域，提出了在背光系统中添加基于TiO

-Ag-TiO

-Ag-Glass膜层结构的滤波器来优化背光源光谱。所提出的滤波器在可见光范围内可以仅通过红、绿和蓝3种颜色的光，而反射其他颜色的光。利用TechWiz 1D软件模拟了滤波器对于LCD色域的影响。当所提出的滤波器分别与黄色荧光粉（pc-WLED）、新红粉（KSF-LED）以及量子点（QD）背光源相结合时，LCD的色域分别从72%提升至102.6% NTSC，从92.3%提升至113.8% NTSC，从104.3%提升至119.9% NTSC。当入射光的角度从0°增加到40°时，3种背光源的色域变化都很小。模拟结果表明：基于金属-电介质-金属（MDM）膜层结构的滤波器拥有小的角度依赖性，因此对实现宽色域LCD，是一种非常有效的方法。但其光利用率很低，3种背光源的光效率分别为26.5%、35.4%以及40.7%。

Abstract

In order to improve color gamut of the LCD

a filter based on TiO

-Ag-TiO

-Ag-glass structure is added in the backlight unit to optimize the backlight spectra. The proposed filter can only transmit the red

green and blue light in visible light range

while reflecting other color light. The effect of a filter on the color gamut of LCD is simulated by TechWiz 1D software. When the proposed filter integrated with pc-WLED

KSF-LCD and QD backlight

the color gamut of LCD can be improved from 72% to 102.6% NTSC

from 92.3% to 113.8% NTSC

and from 104.3% to 119.9% NTSC

respectively. When the incident angle of light increases from 0° to 40°

the color gamut with three backlight changes a little. The simulation results show that the filter based on MDM structure has a smaller angle dependence

so it is a very effective method to realize wide color gamut LCDs. However

the light utilization rate is very low

and the light efficiency of the three backlights is 26.5%

35.4%

and 40.7%

respectively.

关键词

Keywords

references

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