Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Liquid crystal display device

A technology of liquid crystal display device and liquid crystal layer, which is applied in nonlinear optics, instruments, optics, etc., can solve the problems of unfavorable cost and difficulty in using "viewing angle compensation plate integrated polarizing plate".

Active Publication Date: 2016-05-18
STANLEY ELECTRIC CO LTD
View PDF7 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the case of employing a structure based on a known technology, it is difficult to use the above-mentioned "viewing angle compensating plate integrated polarizing plate", which is disadvantageous in terms of cost.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Liquid crystal display device
  • Liquid crystal display device
  • Liquid crystal display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] ·Is the above figure 1 , 2 In the structure shown in , a TAC film as a protective film of the polarizing plate is disposed between the polarizing layer of the polarizing plate and the optical plate

[0058] ·Liquid crystal layer thickness: 4μm

[0059] ·Liquid crystal material: △n=0.0914, △ε=-5.1, no chiral material added

[0060] ・Pretilt angle: 89.5 degrees (the first substrate and the second substrate both have this pretilt angle)

[0061] ・Alignment direction at the center of the layer thickness direction of the liquid crystal layer when a voltage is applied: 6 o'clock direction (270° direction)

[0062] 1 / 4 wavelength plate: a retardation plate with an in-plane retardation of 140nm and positive uniaxial optical anisotropy (positive A plate)

[0063] ・Optical plate: Negative biaxial film with in-plane retardation of 55nm and thickness direction retardation of 220nm

[0064] Light source: standard light source D65

[0065] ・Emulator: Liquid crystal display emul...

Embodiment 2

[0067] ·Is the above figure 1 , 2 In the structure shown in , no TAC film, etc. as a protective film of the polarizing plate is placed between the polarizing layer of the polarizing plate and the optical plate

[0068] ·Other conditions are identical with embodiment 1

Embodiment 3

[0070] ·Is the above image 3 , 4 In the structure shown in , no TAC film, etc. as a protective film of the polarizing plate is placed between the polarizing layer of the polarizing plate and the optical plate

[0071] ・Optical plate: Negative biaxial film with in-plane retardation of 55nm and thickness direction retardation of 124nm

[0072] ·Other conditions are identical with embodiment 1

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a liquid crystal display device which can restrain color offset of a normally white displayed vertical oriented liquid crystal display device in observation in a left-and-right direction. The liquid crystal display device is provided with a first substrate, a second substrate, a liquid crystal layer, a first polarizing plate, a second polarizing plate, a first optical board, a second optical board and a third optical board. The absorption axes of the polarizing plates are configured approximately perpendicular with one another. Furthermore each polarizing plate is configured at an angle of approximate 45 DEG relative to the orienting direction of an approximately central part in the layer thickness direction of the liquid crystal layer when an electric field is applied. The first optical board is a 1 / 4 wavelength board, and the in-surface slow axis is configured at an angle of approximate 45 DEG relative to the absorption axis of the first polarizing plate. The second optical board is a 1 / 4 wavelength board, and the in-surface slow axis is configured at an angle of approximate 45 DEG relative to the absorption axis of the second polarizing plate. The third optical board has negative biaxial optical anisotropy, and the in-surface slow axis is configured to be approximately perpendicular with the absorption axis of the first polarizing plate.

Description

technical field [0001] The present invention relates to a vertical alignment type liquid crystal display device. Background technique [0002] The basic configuration of a vertical alignment liquid crystal display device includes two substrates facing each other, a vertical alignment liquid crystal layer provided between these substrates, and two polarizing plates respectively arranged outside the substrates. In this vertical alignment type liquid crystal display device, the absorption axes of the two polarizing plates are arranged to be perpendicular to each other (crossed Nicol arrangement), and a viewing angle compensating plate is arranged between the substrate and the polarizing plates, thereby, Very good dark display can be obtained when viewed from the front and when viewed from an oblique direction, and excellent normally black display can be realized. [0003] In such a vertical alignment type liquid crystal display device, by further providing a reflection plate o...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G02F1/13363G02F1/1335
CPCG02F1/133528G02F1/13363G02F1/133638
Inventor 岩本宜久
Owner STANLEY ELECTRIC CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com