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

Backlight module and liquid crystal display

A technology of backlight module and light source, which is applied to instruments, optics, light guides, etc., can solve the problem of uneven brightness and darkness of light guide plates, and achieve the effect of avoiding uneven brightness and darkness.

Inactive Publication Date: 2014-03-26
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] An object of the present invention is to provide a backlight module to solve the problem in the prior art that the vertically incident light rays entering the light guide plate and the light concentrated around the vertically incident light rays enter the light guide plate and are concentrated and distributed in the light guide plate. Within a certain range, there is a technical problem of uneven brightness and darkness in 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 liquid crystal display
  • Backlight module and liquid crystal display
  • Backlight module and liquid crystal display

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0038] The following descriptions of the various embodiments refer to the accompanying drawings to illustrate specific embodiments in which the present invention can be practiced.

[0039] see figure 2 , figure 2 It is a structural schematic diagram of the first preferred embodiment of the backlight module in the present invention.

[0040] The backlight module includes a light source 10 and a light guide plate 20 , the light guide plate 20 includes a light incident surface 21 , and a hollow hollow structure 22 is disposed in the light guide plate 20 . The hollow structure 22 includes a first reflective surface 221 , a second reflective surface 222 and a third reflective surface 223 arranged along the thickness direction C (ie, the longitudinal direction) of the light guide plate 20 .

[0041] Please also refer to image 3 , image 3 for figure 2 A top view of one of the hollow structures 22.

[0042] Along the vertical light incident direction A horizontally perpendi...

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 and a liquid crystal display device. The backlight module has arranged within a light guide plate (20) thereof a hollow structure (22), comprising a first reflective face (221) and a second reflective face (222). The first reflective face (221) is arranged at a first inclination angle (beta1); the second reflective face (222) is arranged at a second inclination angle (beta2). With the first inclination angle (beta1), a light emitted towards the first reflective face (221) is reflected by the first reflective face (221). With the second inclination angle (beta2), the light emitted towards the second reflective face (222) is reflective by the second reflective face (222). The hollow structure allows the light to be provided with a scattering effect, and prevents the phenomenon of uneven brightness and darkness.

Description

【Technical field】 [0001] The invention relates to the technical field of liquid crystal display, in particular to a backlight module and a liquid crystal display. 【Background technique】 [0002] With the development trend of thinner and lighter liquid crystal display screens, the number of light emitting diodes (Light Emitting Diode, LEDs) required therefor is decreasing. [0003] see figure 1 , in the side-illuminated LED backlight module, the number of LEDs decreases, resulting in an increase in the distance P' between the LEDs. After the light emitted from the LED 11 ′ enters the light guide plate 12 ′, since the density of the light guide plate 12 ′ is different from that of air, generally smaller than that of air, it will refract the light. [0004] Part of the light emitted from the LED 11' enters the light guide plate 12' vertically, and the angle of this part of the vertically incident light is θ air =90 degrees. After this part of the light enters the light guid...

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): F21S8/00F21V8/00G02F1/13357F21Y101/02
CPCG02B6/0068G02B6/002G02B6/0016G02B6/0015G02F1/1336
Inventor 方扩军
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com