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Liquid crystal display element, electronic device, and manufacturing method of liquid crystal display element

A technology of liquid crystal display elements and liquid crystal molecules, applied in nonlinear optics, instruments, optics, etc., can solve the problems of retardation layer damage, damage to display characteristics, etc., and achieve the effect of improved orientation, good viewing angle, and high contrast display

Active Publication Date: 2008-01-30
JAPAN DISPLAY INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this case, in the process of assembling the liquid crystal cell, the retardation layer of the hybrid structure is likely to be damaged, which becomes the main cause of impairment of display characteristics.

Method used

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  • Liquid crystal display element, electronic device, and manufacturing method of liquid crystal display element
  • Liquid crystal display element, electronic device, and manufacturing method of liquid crystal display element
  • Liquid crystal display element, electronic device, and manufacturing method of liquid crystal display element

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Experimental program
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Effect test

no. 1 approach

[0038] FIG. 1 is a cross-sectional configuration diagram of a liquid crystal display element 1a of the first embodiment. The liquid crystal display element 1a shown in the figure has a retardation layer (hereinafter referred to as a hybrid retardation layer) for hybrid alignment of liquid crystal molecules, and this liquid crystal display element is a transmissive liquid crystal display element 1a driven in the ECB mode, and is configured as follows .

[0039] That is, the liquid crystal display element 1 a includes a drive substrate 10 , a counter substrate 20 disposed opposite to the element forming surface of the drive substrate 10 , and a liquid crystal layer LC sandwiched between the drive substrate 10 and the counter substrate 20 . In addition, a λ / 4 retardation layer 30 is provided on the outer surface of the drive substrate 10 in a closely bonded state, and the outer surfaces of the drive substrate 10 and the counter substrate 20 are crossed in a closely bonded state. ...

no. 2 approach

[0072] FIG. 5 is a cross-sectional configuration diagram of a liquid crystal display element 1b of the second embodiment. The difference between the liquid crystal display device 1b shown in this figure and the liquid crystal display element of the first embodiment described with reference to FIG. the same way.

[0073] That is, the second embodiment is characterized in that the hybrid retardation layer 23 is a layer formed by forming a film on the surface of the transparent substrate 21 facing the liquid crystal layer LC side on the counter substrate 20 side. Therefore, as shown in FIG. 6 , the liquid crystal particles m of the hybrid retardation layer 23 are horizontal on the transparent substrate side of the counter substrate, and gradually become vertically erect toward the liquid crystal layer LC side. Further, in this liquid crystal display element 1b, layers having a retardation are provided in order from the backlight side in the order of the liquid crystal layer LC, ...

no. 3 approach

[0080] FIG. 7 is a cross-sectional configuration diagram of a liquid crystal display element 1c of the third embodiment. The liquid crystal display element 1c shown in the drawing is different from the liquid crystal display element explained using FIG. , the other structures are the same as those of the first embodiment.

[0081] That is, in this third embodiment, it is characterized in that the hybrid retardation layer 23 and the λ / 4 retardation layer 30' are formed by film formation on the surface of the transparent substrate 21 facing the liquid crystal layer LC side on the counter substrate 20 side. layer. In addition, referring to FIG. 6 above, the liquid crystal particles m of the hybrid retardation layer 23 are horizontal on the transparent substrate side of the counter substrate, and gradually become a vertical vertical alignment state toward the liquid crystal layer LC side.

[0082] On the other hand, the ? / 4 retardation layer 30' may be a general uniformly orient...

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PUM

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Abstract

The invention provides a liquid crystal display element, electronic equipment using the liquid crystal display element and a manufacturing method of the liquid crystal display element. The liquid crystal display element has a good viewing angle, a high contrast ratio, and good display characteristics because it has a phase difference layer for mixing and aligning liquid crystal molecules. The liquid crystal display element (1a) of the electric field birefringence mode is composed of: a liquid crystal unit, which is formed by sandwiching a liquid crystal layer LC between a pair of transparent substrates (11-21); a mixed retardation layer (23), which makes the liquid crystal Molecular hybrid orientation, wherein the hybrid retardation layer (23) is formed on the liquid crystal layer LC side of the transparent substrate (21) on the opposing substrate (20) side of one of the pair of transparent substrates (11, 21).

Description

technical field [0001] The present invention relates to an Electrically Controlled Birefringence (ECB) mode liquid crystal display element having a retardation layer for hybrid alignment of liquid crystal molecules, an electronic device using the liquid crystal display element, and a method for manufacturing the liquid crystal display element. Background technique [0002] Conventionally, as a general drive mode for liquid crystal display elements used in personal computers, the twisted nematic mode, which has high transmittance and can be displayed only by combining with a polarizer, has been applied. Among them, as the demand for display elements for mobile electronic devices such as personal digital assistants (PDAs) and mobile phones has increased rapidly, a liquid crystal display element that consumes less power and has higher visibility outdoors than transmissive liquid crystal display elements is being developed. semi-transmissive liquid crystal display element. [0...

Claims

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Application Information

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IPC IPC(8): G02F1/13363G02F1/139G02F1/1333
CPCG02F2413/09G02F1/133632G02F2413/105G02F2001/133565G02F1/133565G02F1/133631G02F1/1335G02F1/13363
Inventor 大山毅玉置昌哉石崎刚司铃木说男西田基晴米田公太郎境川亮山口英将野口幸治加边正章
Owner JAPAN DISPLAY INC
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