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Liquid crystal display

A liquid crystal display device, liquid crystal technology, applied in nonlinear optics, instruments, optics, etc., can solve problems such as glass breakage

Active Publication Date: 2009-01-21
JAPAN DISPLAY INC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Glass damage may occur if the glass is held excessively during transportation or wiring during each process in production

Method used

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  • Liquid crystal display
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0269] Three liquid crystal modules with a structure in which a polarizing plate, a liquid crystal cell, and a polarizing plate are laminated on a backlight unit are fabricated. On one of them, a 2 mm thick glass plate was provided as a front panel through a transparent organic medium polyisobutylene, the thickness of the polyisobutylene layer being about 1 mm. On the other, the same glass plate was installed without filling polyisobutylene but passing an air layer. The last piece keeps the LCD module as it is.

[0270] The pencil hardness on the surface of these modules was measured with a load of 1 kg. When a 2H pencil was used, the module with the front panel had no scratches on the front panel, and the module without the front panel had scratches. Therefore, by providing the front panel, it is possible to secure a pencil hardness of 2H and improve the scratch resistance. When the pencil hardness of the case where the front panel is installed is tested with a pencil with ...

Embodiment 2

[0274] Three liquid crystal modules with a structure in which a polarizing plate, a liquid crystal cell, and a polarizing plate were laminated on a backlight unit were produced. A control system, power supply, etc. are also installed on the liquid crystal module to make an image display device. Among them, in two sets of devices, the driving IC driver is installed on the lower part of the liquid crystal crystal cell, and in the other device, the driving IC driver is installed on the upper part of the liquid crystal crystal cell. One of the liquid crystal display devices in which the driving IC actuator is assembled in the lower part of the liquid crystal cell is provided with a glass plate with a thickness of 2mm as the front panel through the transparent organic medium polyisobutylene. The thickness of the polyisobutylene layer is about 1 mm.

[0275] These three sets of liquid crystal display devices were used continuously for 3 hours in a room at 40°C. As a result, in the...

Embodiment 3

[0280] A double-sided adhesive tape with a width of 6 mm and a thickness of 1 mm was pasted near the end on the polarizing plate side as a stopper for the transparent organic medium. Except for filling triethylene glycol as a transparent organic medium, the pencil hardness and reflectance were measured in the same manner as in Example 1. As a result, the pencil hardness in the case of the front panel was 9H or higher, and the reflectance in the case of filling triethylene glycol is about 4%.

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Abstract

Manufacture of a liquid crystal display is disclosed. The liquid crystal display includes a backlight unit, a backlight unit-side polarizing plate, and a liquid crystal cell held by two glass plates, the liquid crystal cell having an electrode, a liquid crystal layer, an alignment layer, and a color filter arranged between the glass plates. The liquid crystal display also includes a transparent front plate arranged at a side of the liquid crystal cell opposite to the backlight unit, a polarizing plate attached to the liquid crystal cell, and a transparent organic medium layer arranged between the front plate and the liquid crystal cell. Since the front plate is provided at the outermost surface of an image display portion, and the transparent organic medium is filled between the front plate and the liquid crystal module, it is possible to achieve an improvement in wear resistance and a reduction in reflectance.

Description

technical field [0001] The present invention relates to a liquid crystal display device. Specifically, it relates to a liquid crystal display device having a transparent front panel on an image display surface. Background technique [0002] In an image display device using liquid crystal, light emitted from a light source passes through a liquid crystal layer, a color filter, a polarizing plate, etc. to form a visual image. In this case, the outermost surface of a liquid crystal display device for a personal computer monitor or a liquid crystal television is a polarizing plate, and an anti-blurring film or an anti-reflection film provided with fine unevenness is formed on the surface of the polarizing plate in order to suppress surface reflection. The polarizing plate is a thin film formed of cellulose triacetate, and the pencil hardness of this film is about 2 to 3H. [0003] In addition, in the liquid crystal display device, when it is used in a mobile phone, it is assum...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/1333
Inventor 佐佐木洋杉林真己子内海夕香富冈安近藤克己
Owner JAPAN DISPLAY INC
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