Backlight module and coating mode for backboard of backlight module

Abstract

A backlight module (100) includes a backboard (110) and at least one light source module (120). The light source module (120) is coated with radiating coating (130). According to the setting position of the light source module (120), the shapes of the radiating coating (130) provided on the backboard (110) are different. According to the shape of the radiating coating (130), the heat generating from the light source module (120) can be dissipated by the radiating coating (130), so as to provide uniform temperature on the backboard (110). A coating method for the radiating coating (130) is also disclosed.

Description

【Technical field】 [0001] The invention relates to a backlight module and a coating method of the backplane, in particular to a backlight module with heat dissipation coating applied to a specific area of ​​the backplane. 【Background technique】 [0002] Displays with advanced functions have gradually become an important feature of today's consumer electronics products. Liquid Crystal Displays (LCD) have gradually become widely used in various electronic devices such as mobile phones, personal digital assistants, digital cameras, computer screens or laptop screens. Apply monitors with high-resolution color screens. [0003] The backlight module is one of the basic parts of the liquid crystal display. Since the liquid crystal itself does not emit light, it is necessary to provide the required light source through the backlight module to display the desired image; the operating principle of the backlight module is to guide the light from the backlight source into a flat light s...

AI Technical Summary

Problems solved by technology

However, in the process of heat dissipation, the temperature of the backplane is not evenly distributed. Therefore, there will be a certain temperature difference in different parts of the backlight cavity, and the thermal expansion and contraction caused by this temperature difference will generate stress.

[0005] The stress will bring two disadvantages. The first disadvantage is that it affects the optical properties of the optical film, light guide plate, etc., causing birefringence, which in turn causes uneven color when the LCD screen produces pictures (mura)

The second disadvantage is that it may lead to bending and deformation of the light guide plate and the back plate, which will further affect the light transmission and light uniformity of the light guide plate.

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