Unlock instant, AI-driven research and patent intelligence for your innovation.

Direct-type backlight module and liquid crystal display device

A backlight module and direct-lit technology, applied in optics, instruments, light sources, etc., can solve problems such as inability to meet brightness uniformity

Inactive Publication Date: 2015-03-11
HISENSE VISUAL TECH CO LTD
View PDF7 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Embodiments of the present invention provide a direct-lit backlight module and a liquid crystal display to solve the problem that the technical solutions in the prior art cannot meet the requirements of brightness uniformity

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
  • Direct-type backlight module and liquid crystal display device
  • Direct-type backlight module and liquid crystal display device
  • Direct-type backlight module and liquid crystal display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] In the embodiment of the present invention, the direct type backlight module includes: a backplane and a backlight set on the backplane

[0033] source, the backlight light source is arranged in a matrix, and the backlight light source includes: a first backlight light source, located at the top angle position of the matrix backlight light source; a second backlight light source, located at a position other than the top angle position Position, the direct type backlight module also includes: a first lens, the first lens is arranged above the first backlight light source; a second lens, the second lens is arranged above the second backlight light source; wherein, the The divergence angle of the first lens is greater than the divergence angle of the second lens. With the direct type backlight module provided by the embodiment of the present invention, since the divergence angle of the first lens is larger than that of the second lens, the first lens can form a larger lig...

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 a liquid crystal display device. The direct-type backlight module comprises a backboard and backlight light sources which are arranged on the backboard, wherein the backlight light sources are distributed in a matrix manner, each backlight light source comprises a first backlight light source and a second backlight light source, the first backlight light source is arranged on a top corner position of the matrix-type backlight light source; the second backlight light source is arranged on the position except for the top corner position of the matrix-type backlight light source, and the direct-type backlight module also comprises a first lens and a second lens, wherein the first lens is arranged above the first backlight light source; the second lens is arranged above the second backlight light source; a divergence angle of the first lens is larger than that of the second lens. By adopting the direct-type backlight module, the phenomenon that the luminescence of the backlight module in the prior art cannot meet the brightness uniformity requirement can be improved.

Description

technical field [0001] The invention relates to the technical field of liquid crystal displays, and in particular to a direct-lit backlight module and a liquid crystal display. Background technique [0002] At present, liquid crystal display has become the mainstream flat-panel display device. However, since the liquid crystal panel itself does not emit light, the backlight module has become one of the indispensable and important components of the liquid crystal display. The LED (Light Emitting Diode, light emitting Diode) backlight module is generally a direct type structure. [0003] In order to reduce the light mixing distance, a lens is often installed above the LED lamp in the prior art, and the light emitting principle of the refraction lens is as follows figure 1 As shown, the light emitted by the LED needs to be refracted once and then enters the backlight cavity to form a divergent light spot on the diffuser plate, and the brightness of the divergent light spot wil...

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): G02F1/13357F21V5/04F21Y101/02
CPCG02F1/133603G02F1/133611G02F1/133607
Inventor 李碧莹陈宾李富琳李雅娟
Owner HISENSE VISUAL TECH CO LTD