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LCD light-negative device of panel for driven vehicle DVD player

A player and panel technology, used in instruments, optics, nonlinear optics, etc., can solve the problems of LEDs that cannot output multiple tones, and cannot be changed.

Inactive Publication Date: 2007-01-17
LG ELECTRONIC (HUIZHOU) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the existing LED drive circuit used as LCD backlight can only reflect a limited color tone by using a simple voltage distribution method, so it cannot output LEDs with various colors according to the user's preference, nor can it be changed during the display.

Method used

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  • LCD light-negative device of panel for driven vehicle DVD player
  • LCD light-negative device of panel for driven vehicle DVD player
  • LCD light-negative device of panel for driven vehicle DVD player

Examples

Experimental program
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Effect test

Embodiment Construction

[0019] Embodiments of the present invention will be described below with reference to the drawings.

[0020] figure 2 It is a structural diagram of the device for driving the LCD backlight of the vehicle-mounted DVD player panel of the present invention.

[0021] As shown in the figure, the device for driving the LCD backlight of the vehicle-mounted DVD player panel of the present invention is composed of a processor 11 and a digital logic device 12 located in the receiver 10, and an LCD driver 21, a switch 22 and an LED array 23 located in the panel 20. .

[0022] The receiver 10 is a main body for playing a DVD in the DVD player, and the panel 20 is a part provided with various buttons. The receiver 10 is in charge of all the operations of the DVD player, and controls the operation of the LED array 23 in the panel 20 .

[0023] The processor 11 in the receiver 10 calculates the LED RGB output luminosity according to the hue and enables the LED array 23 to emit light acco...

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PUM

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Abstract

The invention relates to the LCD negative phototropism device of the DVD player in the car. It can present all kinds of tones in the controlling way of pulse driving. The invention includes a processor, a digital logic device, a switch and a LED array. The processor can work out the RGB output luminosity presenting the tone and the corresponding input power. The digital logic device outputs the pulse signal corresponding with the input power. The switch can control the electrical source by the pulse signal. The LED array shines according to the electrical source ON / OFF and presents all kinds of tones.

Description

technical field [0001] The present invention relates to a device for driving the front panel LCD backlight of a vehicle-mounted DVD player (DVD player), in particular to a device for driving a vehicle-mounted DVD player with a pulse-driven control method capable of reflecting the backlight of various tones LCD backlight device. Background technique [0002] LEDs are used for the LCD backlight of the panel of the in-vehicle DVD player. figure 1 It is a configuration diagram of an existing LED drive circuit. Such as figure 1 As shown, the LED driving circuit is composed of the LED driving circuit on the left as the button and the LED driving circuit on the right as the LCD backlight. After supplying power to the LED drive circuit, the LED as the button is in the ON state, and the LED as the LCD backlight will form 7 colors according to the signal controlled by the processor (not marked in the figure). That is, LEDs used as LCD backlights can output RGB, and if the RGB outp...

Claims

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Application Information

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IPC IPC(8): G02F1/1335
Inventor 金承钟金永文
Owner LG ELECTRONIC (HUIZHOU) CO LTD
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