Directly-down back light module unit

A backlight module and direct-type technology, which is applied in optics, nonlinear optics, instruments, etc., can solve the problems of reducing the thickness of the direct-type backlight module, large induced current, and reduced luminous efficiency of the lamp tube, and achieves a reduction Thickness, reduce the induced current, ensure the effect of luminous efficiency

Inactive Publication Date: 2008-04-16
上海广电光电子有限公司
View PDF0 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a direct-lit backlight module, which solves the problem of the reduction of the luminous efficiency of the lamp tube and the brightness of the high-voltage end and low-voltage end of

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
  • Directly-down back light module unit
  • Directly-down back light module unit

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0019] The embodiments of the invention will be further described below in conjunction with the accompanying drawings:

[0020] 2 is a schematic diagram of an embodiment of the direct type backlight module of the present invention. As shown in the figure, the direct type backlight module of the present invention includes: a plurality of optical films 110; a diffusion plate 120 placed on the optical film Below 110; a number of parallel tubes 130 are placed under the diffuser 120; a reflector 140 is placed under the lamp 130; a back plate 150 is placed under the reflector 140 for fixing Support reflective sheet 140.

[0021] The back plate 150 under each lamp tube 130 is bent downward to form a back plate groove 151. In a preferred embodiment, the back plate groove 151 is located directly under the lamp tube 130, and the back plate groove 151 The cross-sectional shape of is trapezoidal, and the cross-sectional shape of the back plate groove 151 can also be made into other shapes suc...

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 straight down type backlight module for a liquid crystal display. The straight down type backlight module comprises an optical film, a diffuser plate arranged below the optical film, a plurality of paralleled lamp tubes arranged below the diffuser plate, a reflection piece arranged below the lamp tubes, a back plate arranged below the reflection piece, a plurality of back plate grooves which are formed by the back plate bent downward and are arranged on the back plate below the lamp tubes, or a plurality of back plate openings arranged below the lamp tubes. The straight down type backlight module of the invention can effectively reduce induced current caused by parasitic capacitance between the back plate and the lamp tubes, ensure the luminous efficiency of the lamp tubes and the luminous uniformity on both ends of the lamp tubes, and also reduce the thickness of the whole backlight module.

Description

technical field [0001] The invention relates to a direct-down backlight module of a liquid crystal display, in particular to a direct-down backlight module of a liquid crystal display capable of effectively reducing induced currents generated due to parasitic capacitance. Background technique [0002] In the current information society, electronic display devices are becoming more and more important, so electronic display devices are used in various products. In addition, in order to meet the increasingly advanced information society, electronic display devices with new functions are invented. Usually, electronic display devices provide information for human beings. Electronic display devices convert electrical signals output from various electronic devices into optical signals for people to see and receive. Electronic display devices are the communication bridge between human beings and electronic devices. [0003] There are two types of electronic display devices: active ...

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): G02F1/13357G02F1/1335
Inventor 崔品静
Owner 上海广电光电子有限公司
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