液晶与显示2026，Vol.41Issue(8)：1111-1117,7.DOI:10.3724/CJLCD.2026-0094
环境光对液晶显示器显示效果的影响
Analysis of ambient light effects on liquid crystal display visual performance
刘海鹏 1肖俊莹 1汪建明 1曲莹莹 1陈东川 1周双 1王闰企 1邵喜斌1
作者信息
- 1. 北京京东方显示技术有限公司,北京 100176
- 折叠
摘要
Abstract
Ambient light is a key factor leading to the degradation of the actual viewing experience of liquid crystal displays(LCDs).To overcome the limitations of the traditional Contrast Ratio(CR)evaluation metric,this study introduces the Ambient Contrast Ratio(ACR),aiming to more accurately assess display performance in real-world environments and to clarify its core influencing factors and optimization pathways.Under standard ambient light conditions,the ACR of six display panels utilizing different technologies was measured.By combining parameters such as native CR and reflectance(R),the influence mechanisms of various factors on ACR were systematically analyzed.Furthermore,the enhancement effect and practical limitations of Local Dimming technology on ACR were investigated through testing on three display panels equipped with this feature.Experimental results demonstrate that under 100 lx ambient illumination,reflectance(R)is the dominant factor affecting ACR.The application of Local Dimming technology significantly reduces the black-level luminance(L0)to near zero,markedly diminishing the contribution of CR to ACR.Consequently,ACR becomes primarily determined by peak brightness(L255)and reflectance,indicating that improving ACR requires a focused effort on increasing peak brightness and reducing reflectance.ACR is a more comprehensive and scientific performance evaluation metric than CR.The key to enhancing display quality under ambient light lies in optimizing ACR,rather than solely pursuing a high CR value.Priority should be given to reducing screen reflectance to below 1.5%,coupled with the synergistic optimization of Local Dimming algorithms and an increase in peak brightness,to effectively enhance the user's visual experience in real-world settings.关键词
环境光对比度/液晶显示器/显示性能/反射率/局部调光/峰值亮度Key words
ambient contrast ratio/liquid crystal display/display performance/reflectance/local dimming/peak brightness分类
信息技术与安全科学引用本文复制引用
刘海鹏,肖俊莹,汪建明,曲莹莹,陈东川,周双,王闰企,邵喜斌..环境光对液晶显示器显示效果的影响[J].液晶与显示,2026,41(8):1111-1117,7.
