Backlight unit and liquid crystal display device including the same

A backlight unit and device technology, applied in the direction of semiconductor devices, optical components, electrical components, etc.

Inactive Publication Date: 2012-10-17
LG DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the LED assembly 29 needs to be separated from the light guide plate 23 by a certain distance, it is difficult to reduce the width W of the bezel area, which is equivalent to the first gap distance A1 in the LCD device 1, the thickness of each LED 29a, and The sum of the thicknesses of the LED PCB 29b

Method used

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  • Backlight unit and liquid crystal display device including the same
  • Backlight unit and liquid crystal display device including the same
  • Backlight unit and liquid crystal display device including the same

Examples

Experimental program
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Embodiment approach

[0050] exist Figure 6 In this case, the leads 298 of the plurality of LEDs 290 do not protrude beyond the lower surface of the LED PCB 280 . Similar to the first embodiment of the present invention, the LED PCB 280 includes a base layer 281 , an insulating layer 282 on the base layer 281 , a circuit pattern layer 283 on the insulating layer 282 , and a protection layer 284 on the circuit pattern layer 283 . In addition, a plurality of through holes 288 are formed in the LED PCB 280 along the long sides of the LED PCB 280 . The lead groove 286 surrounding each of the plurality of through holes 288 is formed such that the base layer 281, the insulating layer 282, and the circuit pattern layer 283 each have a step difference.

[0051] The LED assembly 200 includes an LED PCB 280 and a plurality of light emitting diodes 290 inserted into a plurality of through holes 288 of the LED PCB 280 . The base layer 281 may include a metal material having relatively high thermal conductiv...

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PUM

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Abstract

The invention relates to a light emitting diode assembly, a backlight unit and a liquid crystal display device comprising the light emitting diode assembly. The light emitting diode assembly includes: a light emitting diode (LED) printed circuit board (PCB) and a plurality of LEDs. The light emitting diode (LED) printed circuit board (PCB) has a base layer, an insulating layer on the base layer and a circuit pattern layer on the insulating layer and a protecting layer on the circuit pattern layer, and wherein the LED PCB includes a plurality of through holes spaced apart from each other along the length direction; and the plurality of light emitting diodes (LEDs) are inserted into the plurality of through holes, respectively, from a bottom surface of the LED PCB, each of the plurality of LEDs including a lead contacting the circuit pattern layer, and wherein the plurality of LEDs are electrically connected with the LED PCB via the leads.

Description

[0001] This application claims priority from Korean Patent Application No. 10-2011-0034708 filed on Apr. 14, 2011, the entire contents of which are hereby incorporated by reference. technical field [0002] The invention relates to a liquid crystal display device. More particularly, the present invention relates to a liquid crystal display device having a narrow bezel area due to a light emitting diode (LED) backlight unit. Background technique [0003] Liquid crystal display (LCD) devices utilize the optical anisotropy and polarization properties of liquid crystal molecules, and are superior in displaying moving images and high-contrast images, and are currently widely used in televisions or monitors. A liquid crystal display device includes a liquid crystal panel composed of two substrates facing each other and a liquid crystal layer between the substrates. The alignment direction of the liquid crystal molecules in the liquid crystal panel will change with the electric fi...

Claims

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Application Information

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IPC IPC(8): F21S8/00F21V13/02F21V23/06G02F1/13357F21Y101/02
CPCG02B6/0093G02B6/0083G02B6/0091G02F1/133615H05K1/183H05K2201/10106F21Y2103/10F21Y2115/10G02F1/1336G02F1/133603H01L33/48G02F1/13332G02F1/133314F21V19/0025G02B6/0051G02B6/0073G02F1/133308
Inventor 权宁敏闵志殒千昊永
Owner LG DISPLAY CO LTD
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