TV set and direct-lit backlight module

Abstract

The invention discloses a television and a direct-lit backlight module. The direct-lit backlight module comprises a diffusion board, an LED strip light and a back board. The back board comprises a bottom board and side boards. The LED strip light is disposed on the bottom board. A light-permeable inner optical membrane is further disposed between the LED strip light and the diffusion board and provided with a plurality of hollow holes. The light-permeable inner optical membrane is provided with the hollow holes and disposed between the diffusion board and the LED strip light; under the joint action of refracted light, scattered light, reflected light and permeating light from the inner optical membrane, the lighting angle of an LED light-emitting chip is enlarged; an optical lens added outside the LED light-emitting chip is replaced, and the cost of the direct-lit backlight module is reduced; under the light mixing action of the inner optical membrane, light mixing distance is shortened, the thickness of the direct-lit backlight module can be reduced, and the television lower in cost and smaller in thickness can be manufactured.

Description

technical field [0001] The invention relates to the field of display devices, in particular to an optical film and a backlight module of a display device. Background technique [0002] At present, the backlight modules of display devices can be divided into two types: side-type and direct-type. Compared with side-type backlight modules, direct-type backlight modules do not need to install light guide plates, and because of their high quality and low price , is very popular among consumers. Compared with the side-type backlight module, the LED light bar in the direct-type backlight module needs to install an optical lens outside the LED light-emitting chip, so that the light emitted by the LED light-emitting chip can be mixed. uniform. [0003] Such as figure 1 as shown, figure 1 It is a structural schematic diagram of an existing direct-lit backlight module. Taking a TV as an example, the backlight module used in the TV includes a multilayer optical film 110 , a diffusion...

AI Technical Summary

Problems solved by technology

[0006] Due to the high precision of the optical lens 150, the alignment accuracy between the center of the optical lens 150 and the center of the LED light-emitting chip is also high, and the development cost of the optical lens 150, mold manufacturing, and related mounting equipment Factors such as production process and other factors will cause the cost of the direct-lit liquid crystal module using the optical lens 150 to remain high.

[0007] However, if the optical lens 150 is not arranged above the LED light-emitting chip, the light emitted by the backlight module will be uneven, which will affect the display effect of the display device and increase the thickness of the direct-type liquid crystal module.

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