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Spacer and preparation method thereof, liquid crystal panel and display device

A liquid crystal panel and spacer technology, which is applied in nonlinear optics, instruments, optics, etc., can solve the problems of spacer 1, such as high process requirements, small contact area, local stress concentration, etc., and achieve the elimination of display defects and simple preparation Effect

Active Publication Date: 2016-03-16
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

but, figure 2 The size of the spacer 1 shown in is relatively small, and the precision required to form the spacer 1 by photolithography is high, and the process requirements for the production of the spacer 1 are high, and the spacer 1 and the upper and lower The contact area between the substrates is small, and it is easy to cause local stress concentration, which will have a negative impact on the display quality of the LCD panel

Method used

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  • Spacer and preparation method thereof, liquid crystal panel and display device
  • Spacer and preparation method thereof, liquid crystal panel and display device
  • Spacer and preparation method thereof, liquid crystal panel and display device

Examples

Experimental program
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Effect test

Embodiment 1

[0033] image 3 A schematic diagram of the distribution of spacers on the liquid crystal panel in this embodiment is shown, Figure 3a yes image 3 The specific shape diagram of the spacer. Referring to the figure, the spacer 1 of this embodiment is columnar, and the cross-sectional radius of its upper and lower ends is larger than the cross-sectional radius of its middle, so as to realize the contact between the spacer 1 and the upper substrate and the lower substrate 2 in the figure. , the stresses in the contact area are not completely the same, and the schematic diagram of the stress distribution on the cross-section of the spacer is shown in Figure 3b As shown, in the case of the same contact area between the spacer and the substrate in the prior art, the spacer 1 of this embodiment can disperse the stress, forming a Figure 3b The curved stress distribution curve 3 shown in , the spacer 1 with this structure can avoid local stress concentration between the spacer 1 a...

Embodiment 2

[0038] This embodiment provides a method for preparing a spacer, and the specific process can be found in Figure 4 to Figure 9 , the specific description is as follows:

[0039] First, a spacer material layer 4 and a photoresist layer 5 are sequentially formed on the lower substrate 2, see Figure 4 ;

[0040] Next, the photoresist layer 5 is exposed and etched by means of the mask plate 6, and then rinsed with an ultrasonic airflow to form a photoresist pattern 7 corresponding to the spacer distribution position on the photoresist layer 5, See Figure 5 with Image 6 ;

[0041] Then, the spacer material layer 4 is etched by a wet etching process. During the etching process, the concentration gradient of the etchant is realized by adjusting the pressure of the etchant to form a columnar spacer 1, and the upper and lower sides of the spacer 1 The cross-sectional radius at both ends is greater than that in the middle, see Figure 7 with Figure 8 ;

[0042]Wherein, the ...

Embodiment 3

[0045] This embodiment provides a liquid crystal panel, including an upper substrate, a lower substrate, and at least one spacer described in Embodiment 1, the spacer is located between the upper substrate and the lower substrate, and the spacer is The upper end is in contact with the upper substrate, and the lower end of the spacer is in contact with the lower substrate. In the liquid crystal panel formed by using the spacer in Example 1, the stress between the spacer and the upper and lower substrates is dispersed, and local stress concentration is not easy to occur. The phenomenon can improve the display quality of the liquid crystal panel.

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PUM

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Abstract

The invention relates to the display field, and discloses a spacer and a preparation method thereof, a liquid crystal display panel and a display device. The spacer is columnar, and cross sectional radiuses of the upper and the lower ends of the spacer are greater than the cross sectional radius of the middle of the spacer. By setting the cross sectional radiuses of the upper and the lower ends of the spacer to be greater than the cross sectional radius of the middle of the spacer, stresses can be dispersed and display defects of the liquid crystal display panel can be eliminated on the premise of guaranteeing a stress concentration contact area to appear difficultly among the spacer and an upper and a lower base plates, and the structural arrangement of the spacer is easy to achieve by a wet etching technique and is simple to manufacture.

Description

technical field [0001] The invention relates to the display field, in particular to a spacer and a preparation method thereof, a liquid crystal panel and a display device. Background technique [0002] The spacer is an important part of the liquid crystal panel. The spacer can form a liquid crystal region, so that each liquid crystal region is independent and does not affect each other. This can improve the display effect, but at the same time, the spacer also brings some negative effects. Because the spacer is supported between the upper substrate and the lower substrate forming the liquid crystal panel, the fulcrum bears stress, which will cause the deformation of the substrate and cause the display to be incomplete. [0003] figure 1 A schematic structural view of a spacer in the prior art is shown, Figure 1a yes figure 1 Diagram of the shape of the septum, Figure 1b yes figure 1 Schematic diagram of the stress distribution on the cross-section of the septum. The ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/1339
Inventor 王新星柳在健
Owner BOE TECH GRP CO LTD
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