Liquid coating system
A coating and liquid technology, applied in the direction of instruments, nonlinear optics, optics, etc., can solve the problems of manually adjusting the contact pressure between the scraper and the surface to be coated
Active Publication Date: 2019-01-22
BOE TECH GRP CO LTD +1
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- Claims
- Application Information
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Problems solved by technology
[0003] The invention provides a liquid coating system, which solves the technical problem of manually adjusting the contact pressure between the scraper and the surface to be coated compared with the prior art
Method used
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[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0033] The liquid application system of one embodiment of the present invention, such as figure 1 , figure 2 with image 3 shown, including:
[0034] A scraper 110, the scraper 110 has a coating edge 111 for coating the liquid; the coating edge 111 is used to press the surface to be coated on the outside when the liquid is coated;
[0035] An induction chip 120 arranged in the scraper 110 and close to the coating edge 111 is used to sense the actual pressu...
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The invention discloses a liquid coating system which comprises a scraper, an induction chip, a pressure applying part and a control unit, wherein the scraper is provided with a coating side for coating liquid; the coating side is pressed onto a to-be-coated surface at the outer side when the liquid is coated; the induction chip is arranged in the scraper and close to the coating side and is used for inducting a real pressure value of the position of the coating side and sending the real pressure value to the control unit; the pressure applying part is arranged on the back side of the scraper, and is used for applying pressure to the position on the back side of the scraper and back to the induction chip; the back side of the scraper is a surface back to the surface where the coating side lies; and the control unit is used for comparing the real pressure value with a preset pressure value, and controlling the pressure applying part to increase or reduce or keep pressure applied to the scraper according to the compared results. The liquid coating system disclosed by the invention realizes pressure regulation automation, simplifies the operation and improves efficiency.
Description
technical field [0001] The invention relates to the field of liquid coating, in particular to a liquid coating system. Background technique [0002] In the field of liquid crystal display technology, it is necessary to form an alignment film on a substrate. The process of forming an alignment film includes using a doctor blade to evenly coat the chemical liquid used to make the alignment film on the screen printing roller (ie, the surface to be coated) in a chamber that meets specific requirements. In order to achieve uniform coating, the contact pressure between the doctor blade and the surface to be coated reaches the value required for uniform coating. Before each coating, the contact pressure between the scraper and the surface to be coated needs to be measured. First, the scraper and the scraper control part need to be installed, and then the coating edge of the scraper is pressed against the surface of the screen printing roller through the scraper control part. In t...
Claims
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IPC IPC(8): G02F1/1337
CPCG02F1/13378
Inventor 李小宝
Owner BOE TECH GRP CO LTD