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Backlight unit

A technology of backlight unit and diffusion plate, which is applied in the direction of optical components, optics, light source, etc., and can solve problems such as spots

Inactive Publication Date: 2010-06-16
LG DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For this reason, spot defects are generated on images displayed by LCD devices using direct type backlight units with LEDs

Method used

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Examples

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Embodiment Construction

[0035] Reference will now be made in detail to various embodiments of the disclosure, examples of which are illustrated in the accompanying drawings. These embodiments introduced hereinafter are provided as examples in order to convey the idea to those skilled in the art. Therefore, these embodiments may be embodied in different forms, and thus are not limited to these embodiments described here. Also, the size and thickness of devices may be shown exaggerated for simplicity in the drawings. Wherever possible, the same reference numbers will be used throughout this disclosure including the drawings to refer to the same or like parts.

[0036] figure 1 is an exploded perspective view showing a direct type LCD device according to an embodiment of the present disclosure. figure 2 is the display edge figure 1 The cross-sectional view of the direct type LCD device on the line I-I'. refer to figure 1 and 2 A direct type LCD device according to one embodiment of the present d...

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Abstract

A backlight unit capable of implementing slimness and preventing stain defects is disclosed. The backlight unit includes a plurality of LEDs arranged in a fixed interval, a reflection sheet disposed under the LEDs and configured to reflect light, a diffusion plate disposed on the LEDs and configured to diffuse light, and a plurality of inversed pyramid patterns formed along a diagonal direction in the center of one side of the diffusion plate on the upper surface of the diffusion plate. The plural LEDs include a plurality of odd-numbered line LEDs and a plurality of even-numbered line LEDs arranged in zigzags.

Description

[0001] This application claims priority from Korean Patent Application No. 10-2008-0113668 filed on Nov. 14, 2008, which is hereby incorporated by reference in its entirety. technical field [0002] The present disclosure relates to a backlight unit capable of achieving slimness and preventing stain defects. Background technique [0003] There is a tendency that liquid crystal display (LCD) devices are widening their application fields due to features such as light weight, thinning, low driving voltage, and the like. This trend is evident in the way that LCD devices have been applied to office automation equipment, audio equipment, video equipment, and the like. In order to display a picture, the LCD device controls the amount of transmission of light according to image signals applied to a plurality of control switches. [0004] LCD devices that are not self-luminous include a backlight unit that irradiates light on a rear surface of an LCD panel that displays a picture. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21S8/00F21V7/00F21V5/08F21V19/00G02F1/13357F21Y101/02
CPCG02F1/133603G02B5/02G02F2001/133607G02B5/045G02F1/133607G02F1/1335
Inventor 安相铉
Owner LG DISPLAY CO LTD
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