Method and device for hardening frame glue of liquid-crystal display panel

Abstract

The invention discloses a device for hardening frame glue of a liquid-crystal display panel. The device comprises a platform and an irradiating unit. The platform is provided with a working face, a back face and a plurality of through holes, wherein the working face is used for holding the liquid-crystal display panel, the back face corresponds to the working face, and the through holes penetrate through the working face and the back face. The irradiating unit comprises a light source, the light source arranged in correspondence to the working face and / or the back face of the platform provides ultraviolet light irradiated on the working face and the back face of the platform, and the ultraviolet light passing through the through holes and irradiation coverage area thereof is larger than the area of the platform. Accordingly, hardening time of frame glue is shortened, and the problem of around mura of the liquid-crystal display panel is solved.

Description

technical field [0001] The present invention relates to a method and device for hardening frame glue of a liquid crystal panel, in particular to a method and device for hardening frame glue that can irradiate up and down the liquid crystal panel at the same time. Background technique [0002] Compared with the existing cathode ray tube (cathode ray tube, CRT), the liquid crystal display panel (LCD panel) has become a mainstream display due to its light and thin appearance, low power consumption and low radiation pollution. device. Existing methods for filling liquid crystal molecules between substrates include vacuum injection method and liquid crystal drop filling method (one dropfill, ODF). The vacuum injection method sets the two substrates facing each other, seals the surroundings of the two substrates with a frame glue (usually including a thermosetting material), and then hardens the frame glue, and then injects liquid crystal molecules through a reserved opening by c...

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Problems solved by technology

[0004] However, compared with the vacuum injection method, although the above-mentioned liquid crystal dropping method can greatly shorten the time for liquid crystal injection, the frame glue is a glue that hardens under the action of ultraviolet light and heating, and directly contacts the liquid crystal in the liquid crystal panel. , and ultraviolet light cannot pass through the black matrices on the color filter substrate to irradiate the frame glue, but can only irradiate the frame glue through the gap between the electrodes on the active array substrate and react, but it is easy Because the area of ​​the frame glue that can be irradiated by ultraviolet light is too small, the reaction of the photoreactive agent in the frame glue is not complete, and finally there is a problem of uneven color distribution around the panel (around mura)

This broken bright spot can be detected by the naked eye when it is serious, and it will reduce the display quality of the LCD panel, and it has become a problem that the current LCD panel desperately wants to improve.

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