Application of Blue Dichroic Dye in TN Mode of Liquid Crystal Display

FAN Xiao-qin; LIU Wen-ju; YIN Huan; YU Tao; ZHANG Sheng-mao; LIANG Zhi-an; LIANG Xiao; TANG

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Application of Blue Dichroic Dye in TN Mode of Liquid Crystal Display

Device Technology & Physics | 更新时间：2020-08-12

- Application of Blue Dichroic Dye in TN Mode of Liquid Crystal Display
- Chinese Journal of Liquid Crystals and Displays Vol. 24, Issue 6, Pages: 840-844(2009)
- 作者机构：
  
  1. 清华大学化学系,北京 100084,E-mail:10791021@163.com
  2. 石家庄(开发区)永生华清液晶有限公司,河北石家庄,050091
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN27;O753+.2
- Received：28 May 2009，
  
  Revised：02 January 1900，
  
  Published Online：30 December 2009，
  
  Published：30 December 2009
- 稿件说明：
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樊晓琴;刘文菊;尹环;于涛;张胜茂;梁志安;梁晓;唐洪. 蓝色二色性染料在TN液晶显示模式中的应用[J]. 液晶与显示, 2009,24(6): 840-844

FAN Xiao-qin;LIU Wen-ju;YIN Huan;YU Tao;ZHANG Sheng-mao;LIANG Zhi-an;LIANG Xiao;TANG Hong. Application of Blue Dichroic Dye in TN Mode of Liquid Crystal Display[J]. 液晶与显示, 2009,24(6): 840-844
樊晓琴;刘文菊;尹环;于涛;张胜茂;梁志安;梁晓;唐洪. 蓝色二色性染料在TN液晶显示模式中的应用[J]. 液晶与显示, 2009,24(6): 840-844 DOI：

FAN Xiao-qin;LIU Wen-ju;YIN Huan;YU Tao;ZHANG Sheng-mao;LIANG Zhi-an;LIANG Xiao;TANG Hong. Application of Blue Dichroic Dye in TN Mode of Liquid Crystal Display[J]. 液晶与显示, 2009,24(6): 840-844 DOI：

摘要

研究了液晶显示中的二色性染料及其应用。在TN模式中

用蓝色染料来吸收黑态时背景光中泄漏的红黄光

特别在斜视角方向;而在亮态时

染料跟随液晶分子转动而不吸收

使得红黄光的对比度提高。3个液晶样品加了蓝色染料后

对比度分别由47.87

60.32

42.04提高到54.92

67.77

50.30;陡度分别由1.41

1.39

1.40变缓为1.56

1.55

1.58

有利于TN 显示模式中的灰度显示;视角得到了改善

对比度为10

20的曲线左右视角各提高了5 。

Abstract

Dichroic dyes and application in liquid crystal display was studied.The blue dyes absorb leaked red and yellow background-light especially in oblique direction at dark state

and the dyes dont absorb light when turning following LC molecules at white state

so the contrast of TN-LCD is improved because red and yellow light are main part in back-light

and humans eyes is more sensitive to them. As results

the contrasts of three samples are improved to 54.92

67.77 and 50.30 from 47.87

60.32 and 42.04;the steepnesses are leaned over 1.56

1.55

1.58 from 1.41

1.39

1.40 for increasing grey scale;the viewing angle is improved as the curve of contrast with 10 and 20 by 5 on the left and right.

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Keywords

references

. Cognard J, Hieu Phan T. Colorants anthraquinoniques stables de parametre DOrdre eleve en solution dans les cristaux liquids [J]. Mol. Cryst. Liq. Cryst.,1981,70:1-9.

. Sah R E. Investigation of the solubility of pleochroic dyes in liquid crystal[J]. Mol. Cryst. Liq.Cryst.,1985,129:315-316.

. Blackburn C,Griffiths J.Naphthoquinone colouring matters.Part 7. Order parameters of plechroic 2-Aryl-1,4-naphthoquinone dyes in a nematic liquid crystal system[J]. Mol. Cryst. Liq. Cryst.,1983,101:341-349.

. Takaku Kojl. Dichroic dye, and liquid crystal composition and liquid crystal device using the same:JP, JP20060292812 .2006-10-27.

. IU Shih-Hsien, LIN YangChu,TZENG Woan-Shiow. Dichroic dye, composition thereof, and liquid crystal composition, microencapsulated liquid crystal composition and liquid-crystal display element employing the same:中国台湾,TW20040141748 .2004-12-31.

. YASUSHI Shiga,YUKI Tanaka, MIO Ishida. Dichroic dye composition,and liquid-crystal composition and liquid-crystal element including dichroic dye:JP, JP20070012840 . 2007-01-23.

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