Progress in improving the gray scale image quality of LCD under large viewing angle

Yu-qiang GUO; Yu-bao SUN

doi:10.37188/YJYXS20203507.0710

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Progress in improving the gray scale image quality of LCD under large viewing angle

Advanced Displays | 更新时间：2020-07-13

- Progress in improving the gray scale image quality of LCD under large viewing angle
- Chinese Journal of Liquid Crystals and Displays Vol. 35, Issue 7, Pages: 710-724(2020)
- 作者机构：
  
  河北工业大学应用物理系, 天津 300401
- 作者简介：
- 基金信息：
- DOI：10.37188/YJYXS20203507.0710
  CLC： TN141.9
- Received：11 April 2020，
  
  Revised：19 April 2020，
  
  Accepted：19 April 2020，
  
  Published：05 July 2020
- 稿件说明：
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Yu-qiang GUO, Yu-bao SUN. Progress in improving the gray scale image quality of LCD under large viewing angle[J]. Chinese journal of liquid crystals and displays, 2020, 35(7): 710-724.
DOI：

Yu-qiang GUO, Yu-bao SUN. Progress in improving the gray scale image quality of LCD under large viewing angle[J]. Chinese journal of liquid crystals and displays, 2020, 35(7): 710-724. DOI： 10.37188/YJYXS20203507.0710.

摘要

近年来，家用电视和办公显示器的尺寸呈现越来越大的发展态势，液晶显示器(LCD)在大尺寸显示领域内占有很大的比重。LCD的核心是控制背光透过率的液晶面板，由于液晶材料是双折射率材料，所以LCD的灰阶图像质量会存在视角依赖性。为了解决现阶段大尺寸LCD的发展需求，也为了使读者较快地了解相关研究进展，本文总结了改善大视角下灰阶图像质量的部分研究，并对相关方法进行了归纳和评述。文中简述了部分可以提高LCD对比度的方法。详细介绍了能够降低LCD伽马偏移的方法，并将这些方法进行了归类。最后介绍了一些与视角相关的其他性能。本文列举并归纳了多种方法，对未来改善LCD的灰阶图像质量具有指导意义。

Abstract

In recent years

the size of television and office displays shows an increasing trend

and liquid crystal display (LCD) occupies a large proportion in the large-area display field. The core of LCD is liquid crystal panel that controls the transmittance of backlight

and liquid crystal is a birefringence material

so the gray scale image quality of LCD depends on the viewing angle. In order to meet the development needs of large-area LCD at the present stage and to make readers quickly acquire the relevant research progress

some researches on improving the gray scale image quality under large viewing angle are summarized

classified and reviewed. Firstly

some methods to improve the contrast of LCD are introduced. Then

the methods to reduce the LCD gamma shift are introduced in detail and classified. Finally

some additional properties related to the viewing angle are pointed out. In this paper a variety of methods are enumerated and summarized

which have a guiding significance for improving the gray scale image quality of a specific LCD in the future.

关键词

Keywords

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