液晶与显示2025，Vol.40Issue(12)：1782-1791,10.DOI:10.37188/CJLCD.2025-0186
LCD面板环境光对比度的关键影响因素分析及提升方案研究
Research on factors influencing the ambient contrast ratio of LCD
XIN Lan 1SU Yani 2YANG Jun 1LI Zhe 1DENG Yong 1GENG Yuxu 1LI Peng 1SUN Zhidan 1HUANG Zhonghao 1MIN Taiye1
作者信息
- 1. Chongqing Boe Optoelectronics Technology Co.Ltd.,Chongqing 400700,China
- 2. ASUSTEK Computer Incorporation,Taipei 112,China
- 折叠
摘要
Abstract
This article systematically analyzes the key factors affecting Ambient Contrast Ratio(ACR),including external ambient illuminance and internal panel characteristics(such as display white-state luminance,black-state luminance,and reflectivity),to clarify the contribution of each factor and propose targeted ACR improvement solutions.It provides a theoretical basis for the optimal design of display panels under high ambient light conditions.Using a controlled variable approach,simulation experiments were conducted by building an optical simulation model to examine the effects of ambient illuminance(100～1 000 lx),panel luminance(200～900 cd/m2),and the reflectivity of different materials(polarizer(POL),black matrix(BM),shielding layer ITO)on ACR.Experimental tests quantified the impact of each parameter and determined the weight relationships of the key factors.The research findings indicate:(1)Increased ambient light exponentially reduces ACR,but when panel luminance exceeds 500 cd/m2 and reflectivity is below 1.3%,ACR can still be maintained above 120∶1 under 1 000 lx;(2)ACR shows a significant linear positive correlation with panel luminance(R²>0.99),a 50%increase in luminance results in an average 50%growth in ACR;(3)ACR is inversely proportional to panel reflectivity,lower reflectivity leads to higher ACR,with POL material having the dominant influence(contributing about 80%),while BM and ITO together account for only 20%;(4)Black-state luminance has a negligible effect on ACR.Differentiated strategies for enhancing ACR include:(1)Prioritizing optimization of POL material(e.g.,using anti-reflection coatings)to reduce reflectivity by over 80%;(2)Setting a reasonable threshold for luminance increase(suggested 400～600 cd/m2)to balance power consumption;(3)Using BM/ITO optimization as a supplementary measure.The quantitative ACR model established in this study can provide direct guidance for the design of office display devices.关键词
环境光对比度/环境光照度/LCD白态亮度/LCD黑态亮度/LCD反射率Key words
ambient CR/environmental illumination/LCD white luminance/LCD black luminance/LCD reflectivity分类
信息技术与安全科学引用本文复制引用
XIN Lan,SU Yani,YANG Jun,LI Zhe,DENG Yong,GENG Yuxu,LI Peng,SUN Zhidan,HUANG Zhonghao,MIN Taiye..LCD面板环境光对比度的关键影响因素分析及提升方案研究[J].液晶与显示,2025,40(12):1782-1791,10.
