Back light module with light source and light guide plate integrated mechanism

Abstract

The invention discloses a back light module with a light source and light guide plate integrated mechanism. The back light module comprises a light guide plate, an LED (light emitting diode) lamp bar module, buffer foam cotton and a structural part, wherein the LED back light module is fixedly arranged on the light guide plate, the light emitting surface of the LED back light module faces the light incident surface of the light guide plate, and the back light surface of the LED back light module is connected with the structural part through the buffer foam cotton; the LED lamp bar module comprises a white lamp bar, a color lamp bar and diffuse reflection films; a plurality of LED white lamps are arranged at the upper surface of the white lamp bar at intervals, and a through hole is formed between the two adjacent LED white lamps; a plurality of LED color lamps are arranged at the upper surface of the color lamp bar at intervals; the LED color lamps are in one-to-one correspondence to the through holes; each diffuse reflection film is arranged between the two adjacent LED color lamps. The back light module can solve the problems of too small or too large distance between the light guide plate and the LED, and alternative bright and dim pictures at the lamp bars due to light shade between the adjacent LEDs in the prior art.

Description

technical field [0001] The invention relates to the field of liquid crystal display devices, in particular to a backlight module with an integrated mechanism of a light source and a light guide plate. Background technique [0002] The backlight module is an important surface light source supply device of the liquid crystal display module. As a representative of thinner and lighter weight, side-emitting LED backlight modules have become the absolute mainstream technology direction of liquid crystal displays, accounting for almost all of the liquid crystal displays used in monitors, notebooks, pads and cell phones, and most of the liquid crystal displays used in TVs. . [0003] The light guide plate is a key component of the side-emitting LED backlight module. The coupling ability between the light guide plate and the LED determines the utilization rate of the light energy released by the LED in the light guide plate, which directly affects the luminous efficiency of the back...

AI Technical Summary

Problems solved by technology

[0007] In view of the above-mentioned technical problems, the purpose of the present invention is to overcome that if the distance between the light guide plate and the LED is too close in the prior art, the light guide plate will expand and crush the LED when the temperature rises, and if the distance between the light guide plate and the LED is too far, it will cause The loss of light efficiency of LEDs, low light coupling efficiency, and the phenomenon of light shadows between adjacent LEDs will cause the problem of alternating light and dark on the side screen of the light bar, thus providing a method that can effectively prevent temperature rise from causing heat dissipation during use. Squeeze the light plate to other matching devices such as LEDs, which can also prevent the loss of light efficiency of the LEDs, and can also avoid the phenomenon of light shadows. Backlight modules with an integrated mechanism of light source and light guide plate

Images