Unlock instant, AI-driven research and patent intelligence for your innovation.

Semipermeable reflective plate and semipermeable polazied plate and liquid crystal display using them

A liquid crystal display, semi-transparent technology, used in instruments, optics, optical components, etc., can solve problems such as abnormal display, impact deformation, etc.

Inactive Publication Date: 2003-04-09
NITTO DENKO CORP
View PDF0 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is a problem that with a transflective plate having a smooth backside, when the backlight is turned on, Newton's rings can be seen because the backside is adsorbed to the surface of the electroluminescent (hereinafter abbreviated as "EL") element, sandwiching Small foreign matter in between is seen as impact deformation
Furthermore, there is also a problem involved in that abnormal display is caused by the trapped foreign substances.

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
  • Semipermeable reflective plate and semipermeable polazied plate and liquid crystal display using them
  • Semipermeable reflective plate and semipermeable polazied plate and liquid crystal display using them
  • Semipermeable reflective plate and semipermeable polazied plate and liquid crystal display using them

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0035] A polarizing plate having a half-transmission reflecting plate and laminating a light-transmitting transparent colorless PET substrate (trade name: F4205P3; manufactured by Nitto Denko Corporation) on the back thereof was prepared, and on the substrate PET located on the back, its The thickness of the substrate was 25 microns, the thickness of the adhesive (adhesive) layer was 25 microns, the coating thickness of the surface roughening layer (trade name: AG30-PET; manufactured by NittoDenko Co., Ltd.) was 5 microns, and a layer of a rough surface was laminated. film in order to obtain a semi-transmissive polarizing plate on which the layer of this rough surface is formed.

[0036] In addition, the surface roughness of this rough surface film was measured using a surface roughness meter (roughness tester; manufactured by Taylor Hobson Co.), revealing that Ra and Rz were 0.24 micrometers and 2.16 micrometers, respectively. Further, use of a hardness measuring pen (Clemens...

example 2

[0041] By adding 2 parts by weight of silica filler (SYLYSIA; by FujiSilysia K.K.) to 100 parts by weight of coating agent (trade name: UNIDIC; manufactured by Dainippon Ink and Chemical Co.), and then dispersing the prepared mixed liquid coating on the PET substrate , the substrate is provided on the back of a polarizing plate with a semi-transmissive reflector (trade name: EGW4225PG; produced by NittoDenko Corporation), thereby forming a rough surface film with a thickness of 5 μm, thus obtaining a half-transmitting polarizing plate And a rough surface layer is formed thereon.

[0042] Due to the properties of the rough surface film evaluated in the same manner as in Example 1, Ra and Rz and hardness pen were found to be 0.3 µm, 2.66 µm, and 2H, respectively.

[0043] Then the EL backlight placed next to this semi-transparent polarizer is turned on, and no Newton's rings can be seen when viewed through the transmission mode.

[0044] Again, abrasives (corundum #240; average...

example 3

[0047] By adding 2 parts by weight of silica filler (SYLYSIA; by Fuji Silysia K.K.) to 100 parts by weight of coating agent (trade name: UNIDIC; manufactured by Dainippon Ink and Chemical Co.), and then dispersing the prepared mixed liquid with a thickness of about 5 micrometers A coating of 100% was applied on a PET substrate (t600; manufactured by Toray Co., Ltd.), thereby forming a rough surface film with a thickness of 5 micrometers, which was then dried and cured with UV, thus obtaining unevenness in the same performance as in Example 2. hard coating.

[0048] On the smooth surface of a PET film with a hard coating layer, a paste solution containing a mica filler is coated and then dried, thereby forming a semi-transmissive reflective plate having optical performance corresponding to that of a semi-transmissive reflector manufactured by Nitto Denko Co., Ltd. adhesive layer.

[0049] On the thus obtained rough-surfaced, film-coated semi-transmissive reflector, a polarizin...

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

PropertyMeasurementUnit
surface roughnessaaaaaaaaaa
surface roughnessaaaaaaaaaa
peel strengthaaaaaaaaaa
Login to View More

Abstract

A rough-surfaced layer of 0.1 to 1.0 mum in arithmetic mean roughness and 0.1 to 6.0 mum in average ten-point roughness is formed on the back surface of a light-transmitting high-molecular substrate having laminated thereon a semi-transmitting reflective layer to thereby form a semi-transmitting reflective plate. A semi-transmitting polarizer is formed by bonding and laminating thereon a polarizer.

Description

[0001] The present invention is based on Japanese Patent No. 2001-294929, which is incorporated herein by reference. technical field [0002] The present invention relates to a semi-transmissive reflector and a semi-transmissive polarizer for a liquid crystal display (hereinafter sometimes abbreviated as "LCD") and a liquid crystal display using them. Background technique [0003] LCDs are used in desktop computers, electronic watches, personal computers and digital processors, and demand for them is increasing dramatically. The growth in production of transflective displays for mobile phones and personal information terminals is therefore significant. [0004] In order to improve the display performance of the LCD, a semi-transmissive polarizing plate composed of a polarizer laminated with a half-transmitting reflector is usually placed on the back of the liquid crystal unit, using such a method as a display method that is used in a relatively bright environment In the cas...

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
Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/08B32B27/00G02B5/02G02B5/30G02F1/1335G09F9/00G09F9/35
CPCG02F1/133536G02F2203/09G02B5/3033G02F1/1335
Inventor 原和孝
Owner NITTO DENKO CORP