Sealant coating device and self-cleaning method

Abstract

The invention provides a sealant coating device and a self-cleaning method. According to the sealant coating device, by arranging a fixed partition plate in a sealant material pipeline, the sealant material pipeline is divided into a sealant material storage pipeline and a first gas pipeline, by arranging a movable baffle in a sealant coating pipeline, the sealant coating pipeline is divided into a sealant material flowing pipeline and a second gas pipeline, after the coating of frame sealant is finished, a gas control unit is used for adjusting air pressure of the sealant material pipeline and the sealant coating pipeline to control the movable baffle to swing to the direction of the sealant material flowing pipeline, a sealant material is obstructed from flowing to the passage of a sealant coating nozzle, while the second gas pipeline and the sealant coating nozzle are communicated, residual sealant material is cleaned by consistent washing of cleaning gas, and a self-cleaning function is realized.

Description

technical field [0001] The invention relates to the field of manufacturing processes of display devices, in particular to a gluing device and a self-cleaning method thereof. Background technique [0002] In the field of display technology, flat panel display devices such as Liquid Crystal Display (LCD) and Organic Light Emitting Diode (OLED) have gradually replaced Cathode Ray Tube (CRT) display screens. [0003] LCD has many advantages such as thin body, power saving, no radiation, etc., and has been widely used. The LCD includes a liquid crystal display panel and a backlight module (Backlight Module). Generally, a liquid crystal display panel consists of a color filter (Color Filter, CF) substrate, a thin film transistor (Thin Film Transistor, TFT) array substrate, a liquid crystal layer (Liquid Crystal, LC) sandwiched between the color filter substrate and the thin film transistor array substrate, and a sealing Frame glue (Sealant) composition. [0004] Both the box fo...

AI Technical Summary

Problems solved by technology

The existing gluing device controls whether gluing is performed by controlling the opening and closing of the gluing nozzle 30. After the coating of the frame glue is completed, a certain amount of glue material will remain in the gluing pipeline 20 and the gluing nozzle 30, but now Some gluing devices are difficult to clean up these residual glue

The residual adhesive material is easy to undergo self-curing reaction, which will affect the quality of the glue coating at the slightest level, making the glue coating uneven, resulting in poor packaging effect, difficult to meet the requirements of packaging technical indicators, and then affecting the display effect and life of the display screen; It will lead to blockage of the pipeline of the gluing device, which will cause the gluing device to be scrapped and other equipment to have safety hazards, and the curing of the glue will bring great trouble to the subsequent cleaning work, which is time-consuming and laborious.

In addition, if the cleaning is not carried out in time, the residual adhesive material dripping on the machine will also bring other equipment hidden dangers and cleaning problems

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