液晶与显示, 2019, 34 (6): 556, 网络出版: 2019-08-07   

虚拟像素显示均匀性及相关问题的分析和应对

Analysis of luminance uniformity and relevant issues with virtual pixel display and countermeasures
作者单位
京东方科技集团股份有限公司 技术中心, 北京 100176
摘要
针对虚拟像素显示均匀性表现的一些问题, 本文通过分析典型虚拟像素和真红绿蓝像素亮度中心的形成, 对比了虚拟像素显示器与真红绿蓝像素显示器像素亮度中心分布的特点。在典型虚拟像素显示器中, 红、蓝子像素数量少于绿子像素。低空间频率分布的红、蓝子像素对均匀分布的绿子像素亮度分布的调制造成虚拟像素亮度中心分布均匀性下降, 并影响显示均匀性表现效果。本文提出采用不均匀分布的绿子像素排布, 通过红、蓝子像素的亮度调制实现虚拟像素亮度中心均匀分布。初步的傅里叶分析和视觉对比表明, 新虚拟像素显示均匀性表现效果符合预期。
Abstract
Aiming at some luminance uniformity issues with virtual pixel displays, the forming of luminance centroid of a typical virtual pixel and real red-green-blue pixel were analyzed. The distribution features of pixel luminance centroids between the virtual pixel display and common real red-green-blue pixel display were compared. In the virtual pixel display, red and blue sub-pixels were less than green sub-pixels. The uneven distribution of pixel luminance centroid in the virtual pixel display, which might cause some perception differences to common real red-green-blue pixel display, was attributed to the brightness modulation of the red and blue sub-pixels distributed at lower spatial frequency on the green sub-pixels of even distribution. In this paper, the countermeasure was proposed to improve pixel luminance centroids uniformity of virtual pixel display by applying uneven distribution of green sub-pixel arrangement along with brightness modulation of proper red and blue sub-pixel arrangement. The effectiveness was preliminarily verified by Fourier series analysis and visual comparison.

皇甫鲁江, 李真真, 谭文静, 黄硕, 赵辉, 史世明. 虚拟像素显示均匀性及相关问题的分析和应对[J]. 液晶与显示, 2019, 34(6): 556. HUANGFU Lu-jiang, LI Zhen-zhen, TAN Wen-jing, HUANG Shuo, ZHAO Hui, SHI Shi-ming. Analysis of luminance uniformity and relevant issues with virtual pixel display and countermeasures[J]. Chinese Journal of Liquid Crystals and Displays, 2019, 34(6): 556.

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