Electrostatic discharge preventing apparatus for light emitting diodes for backlighting

A technology of light-emitting diodes and discharge devices, which is applied to static electricity, lighting devices, electroluminescent light sources, etc., can solve problems such as difficulty in obtaining anti-static circuit space, damage to RGB LED chips, and reduction in output.

Active Publication Date: 2007-10-10
LG DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] When manufacturing RGB packages for FSC LCDs, RGB LED chips must be mounted in a limited space, and it may be difficult to obtain space for mounting anti-static circuits
In addition, when RGB LED chips are mounted on the surface of a flexible printed circuit board (FPCB), the resulting static electricity damages the RGB LED chips, reducing yield

Method used

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  • Electrostatic discharge preventing apparatus for light emitting diodes for backlighting
  • Electrostatic discharge preventing apparatus for light emitting diodes for backlighting
  • Electrostatic discharge preventing apparatus for light emitting diodes for backlighting

Examples

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Embodiment Construction

[0017] FIG. 3 illustrates a flexible printed circuit board (FPCB) with antistatic means for LED emitting backlight.

[0018] As shown, the antistatic device for emitting backlight LEDs includes a plurality of RGB components 31, 32 and 33 mounted on the surface of the FPCB 30, and separately formed from the RGB components 31, 32 and 33 on the FPCB 30. An antistatic circuit 34 for protecting RGB LED chips (not shown) mounted in the RGB packages 31A to 31D, 32A to 32D, and 33A to 33D emitting backlights mounted at the RGB assemblies 31, 32, and 33 Not affected by static electricity.

[0019] The RGB components 31, 32, and 33 are respectively provided with a plurality of RGB packages 31A to 31D, 32A to 32D, and 33A to 33D. RGB LED chips are mounted in RGB packages 31A to 31D, 32A to 32D, and 33A to 33D, respectively.

[0020] The antistatic circuit 34 is provided with a plurality of Zener diodes 34A to 34C for protecting the RGB LED chips respectively mounted at the RGB packages...

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Abstract

An electrostatic preventing device for light emitting diodes (LED), operative to backlight a liquid crystal display (LCD) device is disclosed. The device includes RGB assemblies installed on a flexible circuit board, and an electrostatic preventing circuit separately installed on the flexible circuit board. The device is adapted to protect RGB LED chips inside each RGB package for backlight, mounted in the RGB assemblies, from static electricity.

Description

technical field [0001] The present invention relates to an anti-static discharge device for light-emitting diodes (LEDs) used to provide backlights for liquid crystal displays (LCDs). Specifically, the present invention relates to an antistatic discharge device in which an antistatic circuit is provided on a printed circuit board on which LEDs are mounted. Background technique [0002] LCD devices can display images by using optical anisotropy properties of liquid crystals. When light is irradiated on liquid crystals having polarization characteristics according to an applied voltage, the liquid crystals are aligned. The LCD device displays images by controlling the amount of light passing through liquid crystals according to the alignment state of the liquid crystals. [0003] The LCD device includes a liquid crystal panel containing liquid crystal between two substrates, and a driving circuit disposed at a peripheral portion of the liquid crystal panel for applying a sig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/1335G02F1/133H05F3/00H05B45/50
CPCH05B33/089Y02B20/341H05B45/50Y02B20/30G02F1/133G09G3/32
Inventor 李种会
Owner LG DISPLAY CO LTD
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