Viewing angle controllable liquid crystal display technology with micro structure

De-zhen ZHONG; Rui LIU; Li-mei JIANG

doi:10.37188/CJLCD.2020-0296

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Viewing angle controllable liquid crystal display technology with micro structure

Driving and Controlling | 更新时间：2021-04-28

- Viewing angle controllable liquid crystal display technology with micro structure
- Chinese Journal of Liquid Crystals and Displays Vol. 36, Issue 5, Pages: 687-693(2021)
- 作者机构：
  
  昆山龙腾光电股份有限公司江苏省龙腾平板显示技术研究院, 江苏昆山 215301
- 作者简介：
- 基金信息：
- DOI：10.37188/CJLCD.2020-0296
  CLC： TN27
- Received：05 November 2020，
  
  Revised：28 December 2020，
  
  Published：2021-05
- 稿件说明：
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De-zhen ZHONG, Rui LIU, Li-mei JIANG. Viewing angle controllable liquid crystal display technology with micro structure[J]. Chinese journal of liquid crystals and displays, 2021, 36(5): 687-693.
DOI：

De-zhen ZHONG, Rui LIU, Li-mei JIANG. Viewing angle controllable liquid crystal display technology with micro structure[J]. Chinese journal of liquid crystals and displays, 2021, 36(5): 687-693. DOI： 10.37188/CJLCD.2020-0296.

摘要

为满足用户对分享性资料及机密性资料具有不同的视觉需求，本文主要围绕笔记本电脑显示领域的视角可显示技术展开探讨，提出一种新型的多视角可切换笔记本电脑显示技术。方法为采用背光模块结合百叶窗结构膜片设计，调光液晶盒与液晶显示盒双盒搭配，液晶显示面板中设置微结构棱镜图形，通过控制调光液晶盒的信号与背光侧电流调整，实现广视角模式与防窥模式一键自由切换。当使用者需要共享信息时，打开宽视角模式，此时背光源为高电平电流模式，调光液晶盒的垂直电场为弱电场状态；当使用者想要保护显示信息时，切换至窄视角模式，背光电流随之切换至低电平电流模式，调光液晶盒的垂直电场增强。实验结果表明本文提出的新型多视角可控笔电显示技术，在窄视角模式下，在视角大于45°后显示屏显示内容达到隐私防窥；宽视角模式具备与业界广视角显示器同等的广视角的全视角显示特性。本技术研究的视角可控技术，视角模式可灵活切换，在笔记本电脑防窥显示领域具有很好的应用前景。

Abstract

In order to satisfy the visual requirement of information sharing and confidential information protection

the research work mainly focuses on controllable visual angle technology applied to notebook display area

and proposes a new multi view switchable notebook display technology. The method combines backlight module with window-shades louver film

uses two cell design meaning consist of a dimming liquid crystal display (DLCD) device and a LCD display with micro lens

wide viewing mode and privacy mode can be switched by one keyboard toggle by modulating the signal of DLCD and the current of backlight. When users want to share information

it performs a sharing wide view mode. On this situation

the current of the backlight is higher and weak vertical electric field is applied to the DLCD. When it switches to a privacy mode for users to protect the display information

the current of the backlight switches to a lower state

and the vertical electric field of DLCD becomes strong. When the view angle is larger than 45° in horizontal direction

the display image is blocked well in narrow viewing angle mode. The wide view mode has the same wide view angle display characteristics as the industry wide view displays. The viewing controllable technology studied in this paper has a good application prospect in the field of anti-peep notebook display as the viewing angle can be switched freely with a high image quality and without sacrificed any aperture ratio.

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references

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Related Institution

InfoVision Optoelectronics （Kunshan） Co.， Ltd.，Institute of Jiangsu （IVO） Flat-Panel-Display Technologies， Kunshan

Department of Applied Physics, Hebei University of Technology

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