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

Video control LED backlight and control method thereof

A technology of LED backlight and video control, applied in TV, optical, color TV, etc., can solve problems such as energy waste, damage to electronic components, shortened service life, etc.

Inactive Publication Date: 2009-02-11
东莞帝光电子科技实业有限公司
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In color images, only white pictures rarely appear, so only a part of the white light emitted by the backlight is used, and most of the light is cut off, resulting in a lot of energy waste
The problem doesn't end there, this wasted energy turns into heat, causing damage to the backlight and other electronic components, shortening their lifespan

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
  • Video control LED backlight and control method thereof
  • Video control LED backlight and control method thereof
  • Video control LED backlight and control method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] Such as figure 1 and figure 2 As shown, the present invention provides a video control LED backlight for liquid crystal display modules, wherein, such as figure 1 As shown, the liquid crystal display module includes a liquid crystal display panel 1, an optical assembly 2 and an LED backlight 3, and the optical assembly 2 can be a scattering plate or other structures that can uniformly scatter the light emitted by the LED backlight 3 .

[0019] The LED backlight 3 for the liquid crystal display module includes a circuit board 31, which is arranged under the liquid crystal display panel 1 and the optical assembly 2 of the liquid crystal display module, such as figure 1 shown.

[0020] A plurality of light emitting units 32 are arranged on the circuit board 31 , and each light emitting unit includes three LEDs 321 of red, green and blue respectively. These light-emitting units 32 are arranged on the circuit board 31 in a rectangular or triangular matrix, as figure 2...

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 video controlled LED backlight source and the method thereof, comprising: circuit board, arranged under liquid crystal display panel and optical modules; multiple light emitting cells arranged on the circuit board, and each comprising red, green and blue LEDs; control unit, comprising control board and multiple control circuits, where the control board is connected with the circuit board through control circuit, and the control circuit is connected with the LEDs one to one, and the control circuit controls LED backlight source according to different brightnesses, and chromas of images on the LCD panel and controls the LEDs to emit light.

Description

technical field [0001] The invention relates to a video-controlled LED backlight source and its control method, in particular to an LED backlight source whose brightness and chromaticity can be controlled by video and its control method. Background technique [0002] The LCD liquid crystal display panel itself does not emit light, and a backlight source must be added to the back of the liquid crystal display panel to display images when in use. After the white light emitted by the backlight is modulated by the LCD to form a color image, a large part of the light is cut off. For example, for a pattern composed of blue sky, green trees, and red flowers, when displaying the blue sky, only blue light from the white light emitted by the backlight passes through the LCD screen to display the blue sky, while the red light and green light are cut off. In the area of ​​green trees, only the green light of the white light emitted by the backlight is displayed as green trees through t...

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): H04N5/14G02F1/13357G09G3/34G02F1/1335
Inventor 宋义苏遵惠刘冶
Owner 东莞帝光电子科技实业有限公司