Backlight source device based on coating ink and manufacturing method

Abstract

The invention discloses a backlight source device based on coating ink and a manufacturing method. The backlight source device comprises a plastic box, a base, a reflecting film, a light guide plate,a diffusion film, a lower bright enhancement film, an upper bright enhancement film and black and white glue, wherein the base is arranged on the inner side of the plastic box, the reflecting film isarranged on the base, the light guide plate is arranged on an upper layer of the reflecting film, the diffusion film is arranged on an upper layer of the light guide plate, the lower bright enhancement film is arranged on an upper layer of the diffusion film, the upper bright enhancement film is arranged on an upper layer of the lower bright enhancement film, the black and white glue is arranged on an upper layer of the upper bright enhancement film, the right end of the diffusion film extends out of the lower bright enhancement film, and the upper end surface of the diffusion film extending out of the lower bright enhancement film is coated with a black ink layer. According to the backlight source device based on the coating ink and the manufacturing method, the right end of the diffusionfilm extends out of the lower bright enhancement film, the upper end surface of the diffusion film extending out of the lower bright enhancement film is coated with the black ink layer, so that reflected light rays in the light guide plate can be greatly shielded, the width of a lower frame of the backlight source device is decreased, and the surface of the diffusion film cannot be wrinkled.

Description

technical field [0001] The invention relates to the technical field of backlight devices, in particular to a backlight device based on ink coating and a manufacturing method. Background technique [0002] In the backlight device, the upper layer of the light guide plate is provided with a diffusion film, and the upper layer of the diffusion film is provided with a lower brightness enhancement film. Since part of the light reflected in the light guide plate needs to be blocked, the lower end of the diffusion film needs to be extended out of the lower brightness enhancement film, and the diffusion film protrudes. Set black PET material on the upper end face. [0003] Since the diffusion film is a soft film material, and the black PET material is a hard material, there is a difference in the expansion coefficients of the two. After the black PET is pasted on the upper surface of the diffusion film, wrinkles will be formed on the surface of the diffusion film due to temperature ...

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Problems solved by technology

[0005] In view of the above deficiencies in the prior art, the purpose of the present invention is to provide a backlight device and a manufacturing method based on coating ink, aiming at solving the problem that the diffuser film is easily caused when the black PET material is used to block the light in the prior art. surface wrinkle problem

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