宽窄视角切换技术的制程改善应用于液晶显示屏的节能架构

刘仕彬; 邹忠飞; 钟德镇; 郭小军

doi:10.3788/YJYXS20193410.0952

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宽窄视角切换技术的制程改善应用于液晶显示屏的节能架构

材料与器件 | 更新时间：2020-08-12

- 宽窄视角切换技术的制程改善应用于液晶显示屏的节能架构
- Process improvement of hybrid viewing-angle technology for energy-saving architecture on LCD
- 液晶与显示 2019年34卷第10期页码：952-958
- 作者机构：
  
  1.上海交通大学电子与通信工程学院电子工程系, 上海 200240
  2.昆山龙腾光电股份有限公司, 江苏昆山 215301
- 作者简介：
  
  [ "刘仕彬(1982—), 男, 台湾新北人, 在站博士后, 主要从事TFT-LCD新技术的研发工作。E-mail:ShihbinLiu@ivo.com.cn" ]
  [ "钟德镇(1973—), 男, 台湾中坜人, 硕士, 主要从事TFT-LCD产品设计与技术研究工作。E-mail:smartchung@ivo.com.cn" ]
- 基金信息：
- DOI：10.3788/YJYXS20193410.0952
  中图分类号： TN141.9;TN27
- 收稿日期：2019-06-08，
  
  录用日期：2019-8-22，
  
  纸质出版日期：2019-10-05
- 稿件说明：
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刘仕彬, 邹忠飞, 钟德镇, 等. 宽窄视角切换技术的制程改善应用于液晶显示屏的节能架构[J]. 液晶与显示, 2019,34(10):952-958.

Shih-bin LIU, Zong-fei ZOU, Te-chen CHUNG, et al. Process improvement of hybrid viewing-angle technology for energy-saving architecture on LCD[J]. Chinese journal of liquid crystals and displays, 2019, 34(10): 952-958.
刘仕彬, 邹忠飞, 钟德镇, 等. 宽窄视角切换技术的制程改善应用于液晶显示屏的节能架构[J]. 液晶与显示, 2019,34(10):952-958. DOI： 10.3788/YJYXS20193410.0952.

Shih-bin LIU, Zong-fei ZOU, Te-chen CHUNG, et al. Process improvement of hybrid viewing-angle technology for energy-saving architecture on LCD[J]. Chinese journal of liquid crystals and displays, 2019, 34(10): 952-958. DOI： 10.3788/YJYXS20193410.0952.

摘要

为了让液晶分子受电场转动的效率增加，并减少钝化层对电场的耗损，本文对具宽窄视角可切换功能的液晶显示屏提出几种低功耗新设计。首先采用新型低电压液晶，在彩膜的制程顺序上做改动，并对TFT侧玻璃基板上的绝缘钝化层进行图案化减薄。减薄的设计方案有两种，一种是直接在钝化层上做部分减薄留下一些剩余厚度，另一种是用SiO

层取代钝化层的剩余厚度。设计变更后的透过率与电场特性使用了数值分析方法加以仿真。仿真结果表明：使用低电压液晶能使原有架构的饱和电压从5.4 V降低到4.3 V，结合减薄新设计可以分别再降低9.30%与13.95%。液晶饱和电压的降低表明节能新架构的液晶操作电压会比原有架构更低，进而面板上的整体功耗降低，达到了宽窄视角可切换低功耗液晶显示屏的需求。

Abstract

Some new designs with low power consumption of hybrid viewing-angle LCD are proposed in order to increase the rotating efficiency of liquid crystal molecules by tuning electric field and to reduce the loss of electric field from passivation layer. Firstly

a new type of liquid crystal with low voltage is used. Then the sequence of process on the color filter is changed

and the insulated passivation layer on the TFT side of glass substrate is patterned and thinned. There are two schemes for thinning. One is to make partial thinning on passivation layer directly

leaving some residual thickness. The other is to replace the residual thickness of passivation layer with SiO

layer. The characteristics of transmittance and electric field after changing design are simulated by the method of numerical analysis. These results of simulation show that the saturation voltage of this original architecture can be reduced from 5.4 V to 4.3 V by using low-voltage liquid crystal and the new design for thinning can further reduce the saturation voltage by 9.30% and 13.95% respectively. The decrease of saturation voltage on liquid crystal indicates that the operating voltage of liquid crystal on new architecture with energy-saving will be lower than that on the prior one

and then the overall power consumption of display panel will be reduced to satisfy the demand of hybrid viewing-angle LCD with low power consumption.

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references

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