Backlight Module

Abstract

The present invention discloses a backlight module, comprising a light guide plate, a light-emitting unit, an optical film, and a chroma compensating component. The light guide plate has a light emergent surface, a bottom surface, and a light incident surface arranged at the side or corner of the light guide plate, wherein the bottom surface is adjacent to the light incident surface and is opposite to the light emergent surface. The light emitting unit is arranged at a position corresponding to the light incident surface of the light guide plate, and is used for emitting white light to be incident into the light guide plate via the light incident surface. The optical film is arranged on the light guide plate. The chroma compensating component is combined to the optical film in the way that the side of the optical film opposite to the light incident surface is apart from the light incident surface at a specific distance, so as to be used for compensating a yellow phenomenon when the light emitting unit emits the white light into the light guide plate.

Description

technical field [0001] The invention relates to a backlight module, in particular to a backlight module which uses a blue ink layer or optical compensation particles to compensate for the color difference of the yellowing phenomenon on the light guide plate. Background technique [0002] Since the liquid crystal itself does not emit light, in order to enable it to display images normally, the method used today is to use the backlight module to provide sufficient brightness and evenly distributed surface light source to the liquid crystal display panel, so that the liquid crystal display panel can display corresponding images , it can be seen that the backlight module is one of the key components of the liquid crystal display panel. [0003] The above-mentioned backlight module usually adopts a design in which a plurality of white light emitting diodes are arranged on positions corresponding to the light incident surface of the light guide plate, so that the white light emitt...

AI Technical Summary

Problems solved by technology

However, due to the influence of the material of the light guide plate itself (such as polycarbonate (PC), etc.), the above light guide design tends to show that the longer the transmission path of white light in the light guide plate, the longer the blue light in the white light (its wavelength is between (440nm to 470nm) will be absorbed more by the light guide plate, which will lead to the more serious yellowish color of the light guide plate at the position farther from the light incident surface, which will affect the image of the liquid crystal display panel display quality

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