A direct type backlight module and liquid crystal display device

A backlight module and direct-type technology, which is applied in optics, nonlinear optics, instruments, etc., can solve the problems affecting the light output effect of the direct-type backlight module and the shadow of the support column, so as to improve the backlight effect and display effect, and prevent support The effect of column shadowing

Active Publication Date: 2015-09-30
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

Therefore, the light output effect of the direct type backlight module is affected
[0005] Therefore, it is necessary to provide a direct-type backlight module to solve the problem of supporting column shadows in the prior art

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
  • A direct type backlight module and liquid crystal display device
  • A direct type backlight module and liquid crystal display device
  • A direct type backlight module and liquid crystal display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] see Image 6 , Image 6 It is a three-dimensional structural schematic diagram of an embodiment of the direct type backlight module of the present invention. Such as Image 6 As shown, the direct type backlight module of the present invention includes: a bottom frame 801, a light source 802, a support column 803 and a diffusion plate 804, wherein there are multiple support columns 803 (only one is shown in the figure).

[0023] The light source 802 is arranged on the bottom frame 801 , and the diffuser plate 804 is arranged above the light source 802 for uniformly diffusing the light emitted by the light source 802 . The support column 803 is arranged on the bottom frame 801 and supports the diffuser plate 804 .

[0024] Next, the embodiment of the present invention analyzes the relationship between the support column 803 itself and the support column shadow, and the relationship between the distance between the support column 803 and the light source 802 and the supp...

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

The invention discloses a direct type backlight module and an LCD (Liquid Crystal Display) device. The direct type backlight module comprises an under frame, a light source, a diffusion plate and multiple support pins, wherein the light source is arranged on the under frame, the diffusion plate is arranged above the light source, the support pins are arranged on the under frame and are used for supporting the diffusion plate, a formula that S >= h * tan theta is met by the distance S between one support pin which is closest to the light source and the light source, h represents the length of the support pin which is closest to the light source, theta represents an incident angle of preset light which is emitted by the light source and enters into the support pin, and the strength of the preset light is one tenth of that of the strongest light emitted by the light source. In such a way, when light is emitted by the light source, the phenomenon of support pin shadow mura can be prevented from happening, and the backlight effect and the display effect can be increased.

Description

technical field [0001] The invention relates to the technical field of liquid crystal display, in particular to a direct-lit backlight module and a liquid crystal display device. Background technique [0002] With the rapid development of liquid crystal display technology, LED (Light Emitting Diode, Light Emitting Diode), one of the backlight sources of liquid crystal displays, has continued to increase its market share due to its advantages of thinness, energy saving and mercury-free, gradually replacing most CCFLs. (Cold Cathode Fluorescent Lamp, Cold Cathode Fluorescent Lamp) backlight, and it is also gradually applied to direct-type backlight modules. [0003] The current low-cost direct-type backlight module technology uses surface-mounted LED technology and is used with a secondary lens to change the original Lambertian light pattern of LED light into a light pattern with maximum light intensity occurring at a large viewing angle. Such as figure 1 , figure 1 It is a...

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
IPC IPC(8): G02F1/13357G02F1/13
Inventor张光耀刘红叶符攀攀
OwnerTCL CHINA STAR OPTOELECTRONICS TECH CO LTD