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Screen printing plate and preparation method thereof

A screen plate and wire mesh technology, applied in the field of screen plate and its preparation, can solve the problems of easy formation of burrs, influence, poor sealing effect, etc., and achieve the effect of uniform glue output and overcoming burrs.

Active Publication Date: 2015-12-02
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 1. The glass glue 4 forms a single peak on the substrate; as figure 2 As shown, it can be seen that the glass glue 4 at the center of the corresponding opening 3 is thicker, and the thickness of the glass glue 4 gradually decreases from the center to both sides, which has a bad influence on the sealing effect;
[0007] 2. Due to the small amount of glue on the edge of the glass glue 4, it is easy to form burrs and 8 defects, such as image 3 shown

Method used

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  • Screen printing plate and preparation method thereof
  • Screen printing plate and preparation method thereof
  • Screen printing plate and preparation method thereof

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Embodiment 1

[0043] Such as Figure 4 As shown, the present embodiment provides a screen, including a screen 1 and a pattern layer 2 located on one side of the screen 1, the pattern layer 2 includes at least one opening forming a pattern; the opening includes at least two sub-openings; The size of the sub-openings decreases successively from close to the screen to away from the screen, wherein the substance to be printed is printed through the pattern layer 2 from the side of the screen opposite to the pattern layer 2 .

[0044] Wherein, openings are provided with the first sub-opening 21, the second sub-opening 22, the third sub-opening 23, and the fourth sub-opening 24 in order from close to the screen 1 to away from the screen 1, and the widths are d1, d2, d3, respectively. d4. It should be understood that the pattern is formed by a hollow area, and each pattern includes at least one opening, and the shape of the opening is also different according to the pattern, and the width here re...

Embodiment 2

[0054] The present embodiment provides a kind of preparation method of screen plate, comprises the following steps:

[0055] Coating photosensitive glue on one side of the screen;

[0056] Exposing and developing the side of the screen that is coated with the photosensitive adhesive to form a sub-opening pattern farthest from the screen, and performing at least one exposure and developing from the opposite side of the screen that is coated with the photosensitive adhesive to form At least one sub-opening; wherein, the size of the sub-openings decreases sequentially from close to the screen to away from the screen;

[0057] or,

[0058] At least two exposures and developments are carried out from the opposite side of the screen coated with the photosensitive adhesive to form at least two sub-openings; wherein the size of the sub-openings decreases sequentially from close to the screen to away from the screen.

[0059] specifically,

[0060] S1. Coating photosensitive glue on...

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Abstract

The invention provides a screen printing plate and a preparation method thereof in order to solve the problems of thick middle, thin edge and high probability of burrs on the edge when a screen printing plate is applied to glass cement printing in the prior art. According to the screen printing plate and the preparation method thereof, multiple openings for forming patterns are formed; each opening comprises at least two auxiliary openings; sizes of the auxiliary openings are sequentially decreased from the position close to a screen mesh to the position far away from the screen mesh, so that a scraper can extrude glass cement on the screen mesh area corresponding to the largest auxiliary opening closest to the screen mesh and extrude the glass cement through the multiple auxiliary openings with the gradually decreased sizes, the uniform discharge quantity of the glass cement at the auxiliary opening farthest away from the screen mesh is realized, and meanwhile, the defect of burrs on the edge of a glass cement printing pattern is overcome.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a screen plate and a preparation method thereof. Background technique [0002] Organic electro-laser display (OLED) devices are display devices that drive luminescent materials to emit light autonomously through current. The light-emitting materials commonly used in OLED devices are small molecules made of dyes and pigments. These small molecules are very sensitive to water and oxygen, and will quickly lose their light-emitting properties when exposed to water and oxygen. Therefore, a good sealing environment is very important for the lifetime of OLED devices. Because of its low water-oxygen transmission rate and high mechanical strength after curing, glass glue has become the most used material in the existing packaging technology. [0003] Such as figure 1 As shown, the patterning of the glass glue 4 is realized by screen printing technology. The graphics on the screen 1 a...

Claims

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Application Information

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IPC IPC(8): G03F7/09G03F7/00B41F15/36
CPCB41C1/148B41N1/248G03F7/2022G03F7/2024H10K71/00H10K50/84B41F15/36B41C1/14
Inventor 肖昂
Owner BOE TECH GRP CO LTD
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