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

Backlight module, LCD unit, and method for driving backlight module

A liquid crystal display and backlight module technology, applied in static indicators, optics, light sources, etc., can solve the problems that cold cathode fluorescent tubes 120 cannot eliminate water ripples and picture water ripples, and achieve the effect of improving display quality

Inactive Publication Date: 2008-01-30
CPT TECH GRP
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the liquid crystal display panel has an adjustable scanning frequency, as long as the scanning frequency of the liquid crystal display panel changes, the image displayed by the liquid crystal display will appear water ripples again.
Moreover, since the operating frequency of the CCFL tube 120 is fixed, it is impossible to eliminate the water ripple phenomenon by adjusting the operating frequency of the CCFL tube 120

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, LCD unit, and method for driving backlight module
  • Backlight module, LCD unit, and method for driving backlight module
  • Backlight module, LCD unit, and method for driving backlight module

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] Please refer to FIG. 2 , which is a top view of a backlight module according to a preferred embodiment of the present invention. The backlight module 200 is suitable for providing the surface light source required by the liquid crystal display panel, and the liquid crystal display panel has a scanning frequency. The backlight module 200 includes a light box 210 , a plurality of light tubes 220 and a driving device 230 . Wherein, the lamp tube 220 may be a cold cathode fluorescent lamp.

[0017] In this embodiment, the light box 210 has an opening for accommodating the light tube 220 and the driving device 230 . The number of lamp tubes 220 is determined according to the design of the designer of the liquid crystal display panel. In FIG. 2 , only four lamp tubes 220 are represented, but it is not limited thereto.

[0018] The driving device 230 is connected to the lamp tube 220 and drives the lamp tube 220 according to the scanning frequency of the liquid crystal displ...

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 is a backlight module and a LCD and a method for driving the backlight module. And the LCD comprises a LCD panel and the backlight module, where the LCD panel has a scanning frequency and the backlight module is arranged under the LCD panel to provide a plane light source for it; and n the backlight module, tubes are arranged in light boxes and a driving device drives the tubes according to the scanning frequency to synchronize the operating frequencies of the tubes with the scanning frequency. The driving method firstly receives the scanning frequency and then updates the operating frequencies of the tubes according to the scanning frequency and synchronizes them.

Description

technical field [0001] The present invention relates to a light source module, a display and a driving method of the light source module, and in particular to a back light module, a liquid crystal display (Liquid Crystal Display, LCD) and a driving method of the back light module. Background technique [0002] In recent years, most of the display screens on mobile phones, digital cameras, digital video cameras, notebook computers, and desktop computers use liquid crystal display panels (LCDs) as the mainstream. Therefore, a backlight module must be provided under the LCD panel to provide the surface light source required by the LCD panel, so that the LCD panel can achieve the display effect, and at the same time obtain sufficient brightness and contrast, and then achieve the display function. [0003] Backlight modules are generally divided into two types: side-light type and direct-light type. The side-light type backlight module has a light guide plate, and the line light ...

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): G02F1/13357G02F1/133H05B37/00G09G3/00G02F1/1335
Inventor 张书铭玉鸿典廖正民
Owner CPT TECH GRP