Brightness enhancement film manufacturing method, backlight module, flat panel display and electronic device

Abstract

The invention discloses a brightness enhancement film manufacturing method, a backlight module, a flat panel display and an electronic device. With a method of, after a press roller and a substrate are provided, heating the substrate, using the press roller to roll the surface to be rolled and forming at least one first rough surface on the rough bottom by using a roughening treatment method, or amethod of, before the press roller rolls the surface to be rolled, forming at least one first rough surface on the rough bottom by using a roughening treatment method, the light-incident surface of the brightness enhancement film has a multi-layered rough surface structure, and the light emitted from the light source is necessary to pass through the multi-layered rough surface when passing through the brightness enhancement film manufactured by the brightness enhancement film manufacturing method provided by the invention, thereby enhancing the diffusion of the light incident. The brightnessenhancement film manufacturing method provided by the invention greatly enhances the haze of the light-incident surface of the brightness enhancement film and is beneficial to reduce the occurrence ofwater ripples and interference fringes. Moreover, since the substrate in the embodiment does not need to be doped with particles, the adverse effect on assembly yield is reduced.

Description

technical field [0001] The invention relates to the field of liquid crystal display, in particular to a method for manufacturing a brightness enhancement film, a backlight module, a flat panel display and an electronic device. Background technique [0002] At present, the brightness enhancement film is one of the most important optical films widely used in the backlight modules of liquid crystal displays. The functions of the brightness enhancement film include: improving light utilization, reducing light loss, increasing backlight brightness, and reducing power consumption The principle of the brightness enhancement film is mainly to use a special prism structure to concentrate the light. [0003] Although the brightness enhancement film produced according to the traditional method has the effect of improving the light utilization rate, it is prone to Moire effect and Newton ring phenomenon. In order to avoid these phenomena, an improved brightness enhancement film structur...

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Problems solved by technology

[0004] The main purpose of the present invention is to propose a method for manufacturing a brightness enhancement film, a backlight module, a flat panel display and an electronic device, aiming at solving the phenomenon of water ripples and interference fringes or doping in the brightness enhancement film in the prior art. Particles affect the yield of backlight assembly

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