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Light emitting diode backlight unit and liquid crystal display having the same

A technology of light-emitting diodes and white light-emitting diodes, which can be used in optical components, electrical components, static indicators, etc., and can solve problems such as reducing the emission angle.

Inactive Publication Date: 2009-07-15
LG DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, in the prior art LCD, the emission angle of the light emitted from the LED 60 and incident on the incident surface of the light guide plate is reduced due to the difference in the medium.

Method used

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  • Light emitting diode backlight unit and liquid crystal display having the same
  • Light emitting diode backlight unit and liquid crystal display having the same
  • Light emitting diode backlight unit and liquid crystal display having the same

Examples

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Embodiment Construction

[0029] Preferred embodiments of the present invention will now be described in detail, 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.

[0030] figure 2 An LCD device is shown. Such as figure 2 As shown, the LCD device 100 includes a display panel 130 displaying images and a backlight unit emitting light toward the display panel 130 .

[0031] The backlight unit includes: LED chips arranged on one side of the light guide plate 114 to emit light (see Figure 4 ), a circuit board 110 for supplying power to the LED chip, a light guide module 120 arranged between the light guide plate 114 and the LED chip to guide light, a reflective plate 115 arranged below the light guide plate 114, and a light guide module 120 arranged above the light guide plate 114 The diffusion plate 116 , and vertical and horizontal prism sheets 118 a and 118 b dispose...

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PUM

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Abstract

A backlight unit and a liquid crystal display having the backlight are provided. The backlight unit includes a plurality of light emitting diode (LED) chips, a light guide plate for converting light generated from the LED chips into surface light, and a plurality of optical guide modules corresponding to the respective LED chips and disposed between the LED chips and the light guide plate.

Description

[0001] This application claims the benefit of Application No. 27238 / 2006 filed in Korea on March 27, 2006, the entire contents of which are incorporated herein by reference. technical field [0002] The present disclosure relates to a light emitting diode (LED) backlight unit, and more particularly, to a backlight unit capable of uniformly emitting light from an LED to a light guide plate and a liquid crystal display device having the same. Background technique [0003] Liquid crystal display (LCD) devices are flat panel display devices for displaying images, and have been widely used as monitors for computers, televisions, and the like due to their thin profile, light weight, and low power consumption. An LCD device typically includes a liquid crystal panel for displaying images and a backlight assembly for emitting light to the liquid crystal panel. [0004] The backlight unit may be classified into an edge-light type and a direct-light type according to the setting of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/13357H01L33/00G02F1/133
CPCG02B6/0025G02B6/0068G02B6/0031G02B6/0028G02F1/1335
Inventor 韩政训
Owner LG DISPLAY CO LTD