Screen printing method and imprinting device
A technology of screen printing and screen printing, which is applied in the field of screen printing methods and embossing devices, which can solve the problems of reduced alignment accuracy, large printing effect offset, and deformed screen deformation, etc., and achieve improved alignment accuracy , improve the final printing accuracy, improve the effect of yield
Active Publication Date: 2018-09-11
BOE TECH GRP CO LTD +1
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Problems solved by technology
When using the straight-edged printing blade of the related art, the force acting on the deformation of the middle part of the printing metal screen is different from that of the printing blades on both sides on the printing metal screen, and the pressure in the middle of the printing process will cause The deformed screen is deformed towards the end position under the action of the scraper
In addition, the gravitational deformation produced by the printing screen will be stretched towards the end direction under the pressure of the squeegee. As a result, the offset of the printing effect in the beginning and end areas of the printed product will be too large
[0004] After the printing offset occurs, the alignment accuracy corresponding to the effective light-emitting area will decrease after the subsequent lamination is completed. If the printing offset is too large, the subsequent laser sintering effect will decrease, which cannot meet the process requirements.
Moreover, the mainstream narrow-frame products on the market have high requirements on the offset accuracy of printing effects, and the increase in offset will lead to a decrease in the success rate of narrow-frame products
Method used
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Embodiment Construction
[0023] The specific implementation manners of the screen printing method and the embossing device provided by the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
[0024] Wherein, the thickness and shape of each component in the drawings do not reflect the actual proportion of each component, but are only for schematically illustrating the content of the present invention.
[0025] attached figure 1 is a schematic perspective view of an imprinting device according to an exemplary embodiment of the present invention. Among them, 1 is the beam of the printing machine, 2 is several scraper mechanisms with a pressure-sensitive feedback system, 3 is several screens on the substrate, 4 is the substrate, 5 is the gap between the screens 3 on the substrate, 6 is the printing screen, 7 For equipment machine platform, 8 is a control device (not shown in the figure).
[0026] First, the substrate 4 (back glass) is plac...
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A method of screen printing comprising the steps of: providing at least one printing squeegee mechanism, wherein the printing squeegee mechanism has a printing squeegee, a pressure-sensitive feedback system; placing at least one screen over a substrate; during printing, the pressure-sensitive feedback system Detecting and feeding back the pressure value between the printing squeegee and the printing screen; comparing the feedback pressure value with a predetermined pressure value, if the difference between the two is greater than a predetermined threshold value, changing the printing The pressure between the squeegee and the printing screen. And an embossing device for realizing the above-mentioned screen printing method.
Description
technical field [0001] The invention relates to the technical field of screen printing, in particular to a screen printing method and an embossing device. Background technique [0002] In the production process of OLED screens (organic light-emitting diodes), it is necessary to coat multiple layers of materials on the substrate (back glass), and in the process of forming the mask layer, screen printing is used to form the required printing pattern. [0003] When preparing for the printing operation, when the put-in printing metal screen is placed horizontally, due to the action of gravity, the middle part of the printing metal screen is deformed, and the closer to the middle part, the greater the deformation. When using the straight-edged printing blade of the related art, the force acting on the deformation of the middle part of the printing metal screen is different from that of the printing blades on both sides on the printing metal screen, and the pressure in the middle ...
Claims
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IPC IPC(8): B41M1/12B41F15/44B41F15/14
CPCB41F15/14B41F15/44B41M1/12B41F15/0818B41F15/0881B41F15/46H05K3/1233B41F15/34
Inventor 阮士薪崔富毅白雪飞李发顺谷春生李旭伟
Owner BOE TECH GRP CO LTD