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Dynamic back light module unit with low resolutions LED display as video control

A LED display and video control technology, applied in optics, light sources, instruments, etc., can solve the problems of color saturation reduction, contrast reduction, brightness and color distortion, etc., to achieve color saturation improvement, distortion reduction, brightness contrast Improved effect

Pending Publication Date: 2008-10-01
SHENZHEN DIQUANG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The color saturation is reduced, and the LCD color saturation of the known CCFL backlight module is only about 70%, resulting in distortion of brightness and color; because the black signal display is not black, the contrast is also reduced

Method used

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  • Dynamic back light module unit with low resolutions LED display as video control
  • Dynamic back light module unit with low resolutions LED display as video control
  • Dynamic back light module unit with low resolutions LED display as video control

Examples

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Embodiment Construction

[0022] Such as figure 2 As shown, the present invention provides a dynamic backlight module using a low-resolution LED display for video control, which is suitable for a liquid crystal display and placed under the liquid crystal display 10. The backlight module includes a circuit Plate 1, light guiding element 2, diffusing element 3 and control unit 4, wherein:

[0023] The circuit board 1 is provided with multiple groups of light sources 11, and the light sources 11 are arranged in a regular manner on the circuit board 1, such as in this embodiment, as image 3 As shown, it is arranged in a matrix array, and each group of light sources 11 is composed of LEDs 111 of three colors: red (R), green (G), and blue (B), and the light sources 11 are electrically connected through the circuit board 1; Such as Figure 4.1 with Figure 4.2 As shown, the copper clad plate 13 of each LED 111 solid crystal point on the circuit board 1 has an area larger than the wafer area; on the coppe...

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PUM

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Abstract

The present invention provides a dynamic backlight module which uses lower resolution LED display as video control, including a circuit board, the circuit board is provided with multigroup light sources, each light source is composed of a red LED, green LED and a blue LED, the light source is electrically connected by the circuit board; a light guide radiating element, provided on the circuit board, covering the light source, further provided between the circuit board and the shell; a diffused element, provided on the top of the light guide radiating element; a control unit, receiving a video signal and a synchronous signal, outputting a multi-channel compression signal, then controlling the brightness and the color of each LED in the light source. The brightness and the color of each LED dynamically and synchronously change with the brightness and color of the area corresponding to the video signal. The video signal has no color component, and the corresponding LED is nonluminous; the corresponding LED of the color component of the lower brightness in the video signal has less luminescence according to the proportion.

Description

technical field [0001] The present invention relates to a dynamic backlight module using a low-resolution LED display for video control, in particular to a low-resolution LED display consisting of several groups of red (R), green (G), and blue (B) light-emitting diodes. LED display as a dynamic backlight module for video control. Background technique [0002] Liquid crystal display devices (LCD) are widely used in very broad fields such as computer liquid crystal display screens, liquid crystal televisions, and outdoor advertisements. However, the LCD display panel itself does not emit light, but relies on the backlight module arranged under the LCD display to provide light source, and forms color images with different brightness, different colors and different gray scales by controlling the pixel electrodes on the LCD display. So the backlight module is one of the key components of LCD. According to the position of the light source, the backlight module is divided into di...

Claims

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Application Information

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IPC IPC(8): G02F1/13357H05B37/02H05K1/00G02F1/1335
Inventor 宋义苏遵惠刘冶
Owner SHENZHEN DIQUANG ELECTRONICS CO LTD
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