Shading adhesive tape, backlight module and backlight display module

Abstract

The invention discloses shading adhesive tape which comprises a first glue layer and a second glue layer. A groove is formed in the bonding side of the first glue layer or the bonding side of the second glue layer. According to the shading adhesive tape, the groove is formed in the bonding side of the first glue layer or the bonding side of the second glue layer, therefore, when the shading adhesive tape is used for being bonded with a liquid crystal display screen module with a backlight module, air existing between a liquid crystal screen and the backlight module and between all optical films in the backlight module can be communicated with external air through the groove, and a pressure difference is prevented from being generated. Therefore, in the vacuum all-gluing process, the problem that a liquid crystal display screen module is bent, deforms, skips, drifts and the like is avoided, and popularization of the vacuum all-gluing technology is achieved.

Description

technical field [0001] The invention relates to the technical field of backlight module bonding design, in particular to a light-shielding adhesive tape, a backlight module and a backlight display module. Background technique [0002] Among the current full lamination technologies in the industry, vacuum full lamination occupies an important position due to its advantages of less air bubbles and a wide range of size adaptation. However, the vacuum full lamination technology is currently only applicable to the lamination of the cover plate and the liquid crystal display module, and the liquid crystal display module with a backlight module has not yet achieved the promotion of the vacuum full lamination technology. [0003] In a general liquid crystal display module, the liquid crystal display screen and the backlight module are bonded together by the word-shaped black and white light-shielding tape or the black-and-black light-shielding tape on the uppermost layer of the back...

AI Technical Summary

Problems solved by technology

Because the assembly of each layer of film and sheet of the backlight module and the assembly of the liquid crystal display are carried out under atmospheric conditions, in the final liquid crystal display module, between the liquid crystal screen and the backlight module, and between each optical film layer in the backlight module There is air gas and atmospheric pressure in between, so when the existing light-shielding tape is used to bond the liquid crystal display module with the backlight module, the liquid crystal display module often bends, deforms, and jumps during the vacuum full bonding process. Problems such as flakes and drift limit the promotion of vacuum full lamination technology

[0004] To sum up, how to solve the problem of restricting the promotion of vacuum full lamination technology when the light-shielding tape is bonded to the liquid crystal display module with the backlight module has become a technical problem to be solved urgently by those skilled in the art

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