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

Back light module unit and LCD device

A backlight module and lamp technology, applied in lighting devices, optics, light sources, etc., can solve the problem of uneven light output of the backlight module, achieve uniform light output, and solve the effect of leakage current

Inactive Publication Date: 2008-11-12
INNOCOM TECH (SHENZHEN) CO LTD +1
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In order to solve the problem of uneven light output from backlight modules in the prior art, it is necessary to provide a backlight module with relatively uniform light output.

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
  • Back light module unit and LCD device
  • Back light module unit and LCD device
  • Back light module unit and LCD device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] see image 3 , is a side exploded view of a preferred embodiment of the backlight module of the present invention. The backlight module 20 includes a reflection sheet 21, a plurality of lamp tubes 22, a diffusion sheet 23 and a brightness enhancement sheet 24, the reflection sheet 21, the lamp tubes 22, the diffusion sheet 23 and the brightness enhancement sheet 24 are placed in sequence from bottom to top, namely The lamp tube 22 is located between the diffusion sheet 23 and the reflection sheet 21 .

[0021] The lamp tube 22 is generally a cold cathode fluorescent lamp tube, and the light emitted by it is diffused by the diffusion sheet 23 and concentrated by the brightness enhancement sheet 24, thereby improving the quality of the output light. The light emitted toward the reflection sheet 21 is reflected by the reflection sheet 21 and then enters the diffusion sheet 23 .

[0022] see Figure 4 , is a schematic diagram of the arrangement of the light tubes 22 of t...

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 relates to a backlight module and a liquid crystal display (LCD) device adopting the backlight module. The backlight module of the invention comprises a plurality of strip lamps arrayed in parallel and the two-phase opposite end part of each strip lamp is respectively loaded with exchange signals with the same frequency and the opposite phases; meanwhile, the adjacent end parts of adjacent strip lamps are also loaded with the exchange signals with the same frequency and the opposite phases.

Description

technical field [0001] The invention relates to a backlight module and a liquid crystal display device using the backlight module, in particular to a direct type backlight module for a large-size liquid crystal display device and a liquid crystal display device using the backlight module. Background technique [0002] Since the liquid crystal in the liquid crystal display panel does not emit light itself, in order to achieve the display effect, a light source device, such as a backlight module, should be provided for the liquid crystal display panel to realize the display function. According to the structure, the backlight module is divided into two types: side-light backlight module and direct-light backlight module. [0003] With the continuous expansion of the application field of liquid crystal displays, especially the application of large-size liquid crystal displays, such as LCD TVs, the requirements for the light output brightness of the backlight module of the liquid...

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): G02F1/13357G02F1/133G02F1/1335
CPCH05B41/282Y02B20/183Y02B20/00
Inventor 冯沙
Owner INNOCOM TECH (SHENZHEN) CO LTD