Ultraviolet light curing device and frame glue curing method

Abstract

The invention provides an ultraviolet light curing device and a frame glue curing method. According to the ultraviolet light curing device, a plurality of light blocking plates are arranged between asample carrying platform and a UV light source, and the light blocking plates can be vertically erected between a liquid crystal panel and the UV light source to prevent UV light emitted by the UV light source from injecting into a non-frame-glue area of the liquid crystal panel in an inclined mode from the side direction, so that the situation that the change of the pre-tilt angle of a PI alignment film in a display area in the curing process of the frame glue due to irradiation by the UV light is avoided, the problem of surrounding mura caused by the frame glue curing producing process of the liquid crystal panel is solved, and the quality of products is improved.

Description

technical field [0001] The invention relates to the field of liquid crystal display, in particular to an ultraviolet light curing device and a frame glue curing method. Background technique [0002] Liquid Crystal Displays (LCDs) are widely used in modern information devices such as computers, mobile phones, and personal digital assistants due to their lightness, thinness, and low power consumption. Generally speaking, a liquid crystal display includes a liquid crystal display panel and a backlight module. Since the liquid crystal display panel itself does not emit light, the liquid crystal display must rely on a light source in the backlight module to emit light. The light emitted by the light source in the backlight module passes through the liquid crystal of the liquid crystal display panel, and the intensity of the light transmitted to the user is adjusted by the turning of the liquid crystal to output an image. [0003] When making a liquid crystal display panel, after...

AI Technical Summary

Problems solved by technology

but if figure 2 As shown, in the actual illumination process, since the UV light will be obliquely incident, even if the mask plate 600 is used to block, a part of the UV light can still be obliquely irradiated to the surface of the PI film 200 in the AA area, and the UV light will break the PI film. The surface structure of 200 changes the side chain of the PI molecular structure, which leads to the change of the pre-tilt angle of the panel during use, and finally leads to the part of the LCD panel that is irradiated with UV light in the display area when it is powered on, and there is no The part irradiated by UV light has different brightness, so some mura appearing around the panel will affect the overall display quality of the panel and reduce the level of the panel

Images