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Backlight unit and liquid crystal display device

A backlight unit, liquid crystal display technology, applied in electrical components, semiconductor devices, optics, etc., can solve problems such as temperature rise, damage to LED operation reliability, and no space for LED chips to release heat.

Inactive Publication Date: 2008-04-30
LG DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the reflective sheet is formed corresponding to the LED chip, the LED chip has no space for releasing heat
Therefore, it is difficult to release the generated heat in a short time when the outside
Therefore, the junction temperature between each LED rises, thereby destroying reliability in LED operation

Method used

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  • Backlight unit and liquid crystal display device
  • Backlight unit and liquid crystal display device
  • Backlight unit and liquid crystal display device

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Embodiment Construction

[0054] Reference will now be made in detail to the preferred embodiments of the invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts.

[0055] Hereinafter, a backlight unit and an LCD device according to the present invention will be explained with reference to the accompanying drawings.

[0056] Figure 4 Shown is a plan view of a backlight unit according to a first embodiment of the present invention. Figure 5 shown along Figure 4 A cross-sectional view of the LCD device on which the backlight unit is mounted according to the first embodiment of the present invention, taken along the line II-II'. Such as Figure 4 As shown, the backlight unit according to the first embodiment of the present invention includes a bottom cover 120 (eg Figure 5 shown), a plurality of heat pipes 180, a plurality of red R, green G and blue B LEDs, and ...

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Abstract

A backlight unit and an LCD device are provided, in which an LED (light emitting diode) is used as a light source of the backlight unit, and the heat generated from the LED is rapidly discharged to the outside. The backlight unit includes in one embodiment a cover bottom; at least one heat pipe located on the cover bottom; and a plurality of light sources located on the at least one heat pipe at fixed intervals.

Description

[0001] This application claims the benefit of Application No. 10-2004-0087194 filed in Korea on Oct. 29, 2004 and No. 10-2005-0016992 filed in Korea on Feb. 28, 2005, which are incorporated herein by reference The entire content is for reference only. technical field [0002] The present invention relates to a liquid crystal display (LCD) device, and more particularly to a backlight unit including a light emitting diode (LED) and an LCD device on which the backlight unit is mounted. Background technique [0003] A cathode ray tube (CRT), which is one of flat panel display devices, has been widely used in displays of devices such as televisions, measuring devices, and information terminals. However, since the CRT is bulky and heavy, it has certain limitations in miniaturization and light weight. Therefore, display devices such as a liquid crystal display (LCD) device using the electro-optic effect, a plasma display panel (PDP) using a gas discharge, and an electroluminescenc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/1335
CPCF21V29/51G02F1/133603G02F1/133628H01L33/648
Inventor 郑仁石金杞彬金泰佑
Owner LG DISPLAY CO LTD