Cellphone and edge-in backlight module

Abstract

The invention discloses a cellphone and an edge-in backlight module. The edge-in backlight module comprises a light guide plate and a light source emitting light into the lateral side of the light guide plate. The longitudinal section of the light guide plate along the light incidence direction is wedged-shaped, and the light source is arranged on a thickest end face of the light guide plate. By the wedge-shaped light guide plate, the nearer the light guide plate is to the light source, the thicker the light guide plate is, the higher the transmission loss of light rays in the light guide plate after reflection is, and on the contrary, the further the light guide plate is to the light source, the thicker the light guide plate is, the lower the transmission loss of the light rays in the light guide plate after reflection is, thus, luminance of the light guide plate is balanced, and the luminance of the edge-in backlight module meets the requirement on uniformity by the lower cost.

Description

technical field [0001] The invention relates to the field of digital equipment and communication equipment using a side-entry backlight, in particular to a side-entry backlight module on a mobile phone. Background technique [0002] The existing side-type backlight modules all use a light guide plate, and the light will be lost during transmission, so that the closer to the light source in the light guide plate, the brighter the brightness, and the farther away from the light source. The lower the position, the darker the brightness, which will make it difficult for the brightness of the side-type backlight module to meet the uniform requirements. [0003] However, most of the traditional methods meet the requirement of uniform brightness by changing the position of the light source or increasing the number of light sources, and adopting a diffuser film, which undoubtedly increases the production cost of the side-type backlight module. [0004] Therefore, the prior art stil...

AI Technical Summary

Problems solved by technology

[0002] Existing side-entry backlight modules all use a light guide plate, and the light will be lost during transmission, so that the closer the light source is to the light guide plate, the brighter the brightness will be, and the farther away from the light source will be. position, the brightness will be darker, which will make it difficult for the brightness of the side-type backlight module to meet the uniform requirements

[0003] However, most of the traditional methods meet the requirements of uniform brightness by changing the position of the light source or increasing the number of light sources, and using a diffuser film, which undoubtedly increases the production cost of the side-type backlight module.

[0004] Therefore, the existing technology still needs to be improved and developed

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