Curing method of black matrix, frame glue of liquid crystal display panel and liquid crystal display panel

Abstract

The invention provides a black matrix, a curing method of a border adhesive of a liquid crystal display panel, and the liquid crystal display panel, wherein the black matrix comprises black dye, which is a black dye compound absorbing rays with wavelength larger than 400nm or a black dye mixture absorbing rays with wavelength larger than 400nm, and the black matrix is enabled to shield visible light and be penetrated by UV (ultraviolet) light; by arranging the black matrix on the edge of a CF (Color Filter) substrate and coating the black matrix with the border adhesive, after the CF substrate is paired with a TFT (Thin Film Transistor) substrate, UV light irradiating is carried out at one side of the CF substrate, the UV light can penetrate through the black matrix to cure the border adhesive, and the curing effect of the border adhesive is good, so that the level of the liquid crystal display panel is promoted, and the cost of a product is reduced; in addition, the UV light irradiating is carried out at one side of the CF substrate, a metal wire at the upper edge of TFT substrate can be arranged wider, and the applied range of the product is enlarged.

Description

technical field [0001] The invention relates to the technical field of liquid crystal display, in particular to a black matrix, a curing method for a frame glue of a liquid crystal display panel, and a liquid crystal display panel. Background technique [0002] With the development of display technology, liquid crystal displays (Liquid Crystal Display, LCD) and other flat display devices are widely used in mobile phones, televisions, personal Various consumer electronic products such as digital assistants, digital cameras, notebook computers, and desktop computers have become the mainstream of display devices. [0003] Most of the liquid crystal display devices currently on the market are backlight liquid crystal displays, which include a liquid crystal display panel and a backlight module (Backlight Module). The working principle of the liquid crystal display panel is to place liquid crystal molecules between two parallel glass substrates. There are many vertical and horiz...

AI Technical Summary

Problems solved by technology

As a photoresist material, the black matrix 220 will absorb about 95% of the UV light with a wavelength below 380nm. Therefore, in the prior art, it is generally selected to perform UV on the frame glue 400 from the side of the TFT substrate 100 through the gap between the metal lines 120. Light is irradiated to cure it. At this time, part of the UV light will be blocked by the metal wire 120, resulting in poor curing of the frame glue 400, resulting in liquid crystal contamination, abnormal alignment, and insufficient adhesion of the frame glue due to residual reactants in the frame glue. Directly manifested as uneven brightness (Mura) around the LCD panel and peeling (Peeling) between the CF substrate and the TFT substrate, resulting in economic losses

To solve this problem, the existing technology generally increases the UV light reactivity of the frame adhesive material, or avoids designing wide metal lines as much as possible. However, increasing the UV light reactivity of the frame material will increase the cost of the frame adhesive material and increase the cost of the panel. , and avoiding the design of wide metal lines makes it impossible for the panel to apply technologies that require relatively wide metal line design, such as Gate Driver on Array (GOA) technology on array substrates, etc.

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