Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Backlight module and optical plate thereof

A technology of backlight module and optical board, applied in optics, optical components, nonlinear optics, etc., can solve the problems of increasing the number of light interfaces, increasing the loss of light transmission interface, and light loss.

Inactive Publication Date: 2010-01-06
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
View PDF0 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, when the light is transmitted in the optical plate 10 and the upper diffusion sheet 14, part of the light will be absorbed and cause light loss; The number of interfaces increases the interface loss of light transmission and reduces light utilization

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 optical plate thereof
  • Backlight module and optical plate thereof
  • Backlight module and optical plate thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] The backlight module and its optical board of the present invention will be further described in detail below with reference to the drawings and embodiments.

[0020] See image 3 and Figure 4 , shows the optical plate 20 according to the preferred embodiment 1 of the present invention, which is composed of a transparent body, and the transparent body includes a first surface 201 and a second surface 203 opposite to the first surface 201 . The first surface 201 is flat, and the second surface 203 is alternately provided with a plurality of parallel elongated columnar protrusions 204 and a plurality of parallel elongated V-shaped protrusions 205 . In this embodiment, the cross section of the elongated columnar protrusion 204 is a semicircular arc. The maximum width of the elongated columnar protrusion 204 is denoted as P 1 , the radius is recorded as R, then P 1 and R satisfy the following relationship: 0.025 mm ≤ P 1 ≤1.5 mm, P 1 / 4≤R≤2P 1 , in other words, the ...

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

PropertyMeasurementUnit
widthaaaaaaaaaa
heightaaaaaaaaaa
angleaaaaaaaaaa
Login to View More

Abstract

A backlight module comprises a frame, a light source and an optical plate; wherein, the light source is positioned in the frame; the optical plate is arranged above the light source and comprises a transparent body; the transparent body comprises a first surface and a second surface opposite to the first surface; the first surface is a plane; the second surface is provided with a plurality of mutually parallel long strip arc bulges and a plurality of mutually parallel long strip V-shaped bulges, which are arranged alternately; The invention also provides the optical plate adopted by the backlight module. The backlight module has the advantages of improving efficient utilization ratio of light and enjoying uniformity of light emission.

Description

technical field [0001] The invention relates to a backlight module and its optical board, in particular to a backlight module for liquid crystal display and its optical board. Background technique [0002] See figure 1 , shows a conventional direct-lit backlight module 100, which includes a frame 11, a plurality of light sources 12 disposed inside the frame 11, and a diffusion plate 13 disposed above the light sources 12 and covering the frame 11. [0003] In use, the light generated by the plurality of light sources 12 enters the diffusion plate 13 and is diffused. However, after being diffused by the diffuser plate 13, the angles at which light emerges from the diffuser plate 13 become more chaotic, so that its brightness in a specific viewing angle range is not high; It is still often difficult for the plate 13 to directly diffuse the light from the light source 12 evenly, so that the light emitted from the diffuser plate 13 is prone to light source afterimages, that is...

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 Applications(China)
IPC IPC(8): G02F1/13357G02B6/00F21V8/00
CPCG02F1/133606
Inventor 章绍汉
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com