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Display substrate, preparation method of display substrate, and display device

A technology for display substrates and display devices, applied in instruments, semiconductor devices, optics, etc., can solve the problems of liquid crystal molecular orientation disorder, lack of viewing angle compensation, and large birefringence, so as to achieve improved picture quality and good viewing angle experience , Excellent wide viewing angle display effect

Inactive Publication Date: 2015-07-29
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The liquid crystal display device with the above-mentioned structure is in a reliable environment such as high temperature and high humidity or thermal shock, and the PSA layers 16, 56 and TAC (triacetyl cellulose) layers 12, 14, 52, 54 in the polarizers 1, 5 are extremely prone to shrinkage (eg figure 2 As shown, the PSA pressure-sensitive adhesive and DLC-TAC shrink), causing the DLC layers 15 and 55 on the TAC base film to be subjected to stress changes, the long axis direction of DLC is disordered, and the long axis direction of LC becomes non-perpendicular The alignment relationship, which in turn leads to the disorder of the alignment directions 151 and 551 of the liquid crystal molecules inside, resulting in the occurrence of poor display of the hourglass Mura, such as image 3 The disordered orientation directions 1511 and 5511 shown in the figure, at this time, the overall birefringence of the two is very large, which cannot play the role of viewing angle compensation, resulting in the occurrence of poor display of the hourglass mura
This phenomenon is most obvious in large-size products, and so far polarizer manufacturers have no effective improvement methods

Method used

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  • Display substrate, preparation method of display substrate, and display device
  • Display substrate, preparation method of display substrate, and display device
  • Display substrate, preparation method of display substrate, and display device

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Embodiment 1

[0038] This embodiment provides a display substrate, which has a better effect of anchoring the alignment of liquid crystals, so better display quality can be obtained.

[0039] Such as Figure 4 As shown, the display substrate includes a color filter substrate 21, an array substrate 22, and a liquid crystal layer arranged between the color filter substrate 21 and the array substrate 22, and a side of the color filter substrate 21 and the array substrate 22 facing the liquid crystal layer Alignment layers 3 are respectively provided on the sides, and a viewing angle compensation layer is also included between the color filter substrate 21 and the alignment layer 3, and between the array substrate 22 and the alignment layer 3.

[0040] Wherein, the viewing angle compensation layer is formed of RM (Reactive Mesogens, active radical) material. At present, RM materials are mainly developed by Merck. A typical RM material is a reactive azobenzene liquid crystal material, which has...

Embodiment 2

[0058] This embodiment provides a display device, including the display substrate in Embodiment 1.

[0059] The display device may be any product or component with a display function, such as a liquid crystal panel, electronic paper, a mobile phone, a tablet computer, a television set, a monitor, a notebook computer, a digital photo frame, a navigator, and the like.

[0060] The display device utilizes the property of RM material to fix the polymerized liquid crystal phase, and compensates the display viewing angle by fabricating it in the display substrate. Compared with the current technical means of fabricating DLC ​​film in the polarizer substrate outside the liquid crystal cell, it can Avoiding the latter’s hourglass mura display defects caused by the disordered arrangement of liquid crystal molecules in the DLC layer in the polarizer substrate under high temperature, high humidity or thermal shock conditions, and to a certain extent improve the performance of liquid cryst...

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Abstract

The invention belongs to the technical field of a display, in particular to a display substrate, a preparation method of the display substrate, and a display device; the display substrate comprises a color film substrate arranged in a folding manner, an array substrate, and a liquid crystal layer arranged between the color film substrate and the array substrate; one side, facing the liquid crystal display layer, of each of the color film substrate and the array substrate is provided with an orientation layer; viewing angle compensation layers are further arranged between the color film substrate and the orientation layers as well as between the array substrate and the orientation layers. The display substrate has a relatively good anchoring liquid crystal orientation effect, so relatively good wide viewing angle display quality can be obtained.

Description

technical field [0001] The invention belongs to the field of display technology, and in particular relates to a display substrate, a preparation method of the display substrate and a display device. Background technique [0002] A TN type (ECB type or OCB type, etc.) liquid crystal display device has a very narrow viewing angle (about 40°) due to its own liquid crystal arrangement. In order to compensate for the viewing angle, the most common and only method at present is to coat (Coating) a layer of discotic liquid crystal molecules (Discotic Liquid crystal, DLC) on the TAC base film in the polarizer, by making the DLC The orientation is antiparallel to the orientation of liquid crystal molecules (Liquid crystal, LC for short) in the liquid crystal cell, so as to widen the viewing angle (from about 40° to about 80°). [0003] The specific structure of the above-mentioned wide viewing angle TN type liquid crystal display device is as follows: figure 1 As shown, the display...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/13363G02F1/1333
CPCG02F1/1333G02F1/13363G02F1/133636G02F1/1393G02F1/1395G02F1/1396G02F2413/02G02F1/133528G02F1/1337G02F2413/105G02F1/133633H01L27/12
Inventor 左雄灿张俊瑞
Owner BOE TECH GRP CO LTD
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