Backlight module and coating mode for backboard of backlight module

A technology of backlight module and light source module, which is applied to the device, coating, optics and other directions of coating liquid on the surface. and other problems, to achieve better temperature uniformity and significant cooling effect

Inactive Publication Date: 2014-04-23
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Backlight module and coating mode for backboard of backlight module
  • Backlight module and coating mode for backboard of backlight module
  • Backlight module and coating mode for backboard of backlight module

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] The following descriptions of the various embodiments refer to the accompanying drawings to illustrate specific embodiments in which the present invention can be practiced. The directional terms mentioned in the present invention, such as "up", "down", "front", "back", "left", "right", "top", "bottom", "horizontal", "vertical", etc. , are for orientation only with reference to the attached drawings. Therefore, the directional terms used are used to illustrate and understand the present invention, but not to limit the present invention.

[0021] see figure 1 , figure 1 It is a schematic diagram showing the structure of the side-type backlight module 100 in which heat-dissipating paint is coated on a specific area of ​​the present invention. The edge-lit backlight module 100 can be applied in a liquid crystal display. The backlight module 100 includes a backplane 110 , a light source module 120 , a heat sink 150 and an optical component 140 . The light source module 1...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

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...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): F21S8/00F21V19/00F21V29/00B05D7/24
CPCG02B6/0085
Inventor 黄建发
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap