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Optical compensation type double refraction type liquid crystal display device and its producing method

A liquid crystal display device, optical compensation technology, applied in optics, nonlinear optics, instruments, etc., can solve problems such as low response time

Inactive Publication Date: 2004-07-14
LG DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, OCB type LCD devices have relatively low response time

Method used

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  • Optical compensation type double refraction type liquid crystal display device and its producing method
  • Optical compensation type double refraction type liquid crystal display device and its producing method
  • Optical compensation type double refraction type liquid crystal display device and its producing method

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Embodiment Construction

[0033] Reference will now be made in detail to embodiments of the invention, examples of which are illustrated in the accompanying drawings.

[0034] Table 1 shows the relationship between the flexural elastic modulus and the voltage suitable for the black image of the OCB type LCD device under the normally bright mode (Normally White Model) according to the present invention. Table 2 shows the relationship between the dielectric constant anisotropy and the voltage suitable for the black image of the OCB type LCD device in the always bright mode according to the present invention. For the convenience of discussion in the description, the voltage suitable for the black image of the OCB LCD device in the always bright state mode is called black voltage (Black Voltage).

[0035] Flexural modulus of elasticity (K 33 )

black voltage

9.0

5.6V

9.9

5.9V

10.8

6.1V

[0036] Dielectric constant aniso...

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PUM

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Abstract

An optically compensated birefringence mode liquid crystal display device includes first and second substrates facing and spaced apart from each other, a liquid crystal material layer between the first and second substrates, the liquid crystal material layer having a splay state when a voltage is not applied and having a bend state when a transition voltage is applied, a first compensation film on an outer surface of the first substrate, a first polarizing plate on the first compensation film, a second compensation film on an outer surface of the second substrate, and a second polarizing plate on the second compensation film, wherein the liquid crystal material layer in the splay state has a first retardation value (R1) satisfying according to: 1.35 G02F 1 / 133 G02F 1 / 133 G02B 5 / 30 9 7 4 2003 / 8 / 11 1512238 2004 / 7 / 14 1251006 2006 / 4 / 12 2006 / 4 / 12 2006 / 4 / 12 LG Philip LCD Co., Ltd. Korea Park Kv-Hyun Choi Sang-Ho xu jinguo chen gong 11006 The Machinery Patent Service Centre of Machine-building and Electronics Industry No.1 Nanli, Baiwanzhuang, fuchengmenwai, Beijing 100037 Korea 2002 / 12 / 30 10-2002-0087544

Description

[0001] This application claims the benefit of Korean Patent Application No. P2002-87544 filed in Korea on December 30, 2002, which is hereby incorporated by reference in this application. technical field [0002] The present invention relates to a liquid crystal display device and a method of manufacturing a liquid crystal display device, more particularly, the present invention relates to an optically compensated birefringence type liquid crystal display device and a method of manufacturing an optically compensated birefringence type liquid crystal display device. Background technique [0003] In various liquid crystal display (LCD) devices that are commonly used, since switching elements such as thin film transistors (TFTs) are arranged in a matrix structure with respect to each pixel area in the active matrix LCD (AM-LCD) device, it has high resolution The active matrix type LCD device has been vigorously developed due to its excellent characteristics of high rate and disp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/30G02F1/13363G02F1/1337G02F1/139
CPCG02F2203/60G02F1/1395G02F1/133634G02F1/13363
Inventor 朴求铉崔相好
Owner LG DISPLAY CO LTD