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Backlight unit and liquid crystal display comprising the same

A liquid crystal display, backlight unit technology, applied in static indicators, optics, instruments, etc., can solve the problems of insufficient uniform brightness and blurred colors.

Inactive Publication Date: 2007-05-23
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with the edge type backlight unit, the direct type backlight unit provides a high level of brightness by utilizing a plurality of light sources, but the brightness is not sufficiently uniform due to blurring of colors

Method used

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  • Backlight unit and liquid crystal display comprising the same
  • Backlight unit and liquid crystal display comprising the same
  • Backlight unit and liquid crystal display comprising the same

Examples

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Embodiment Construction

[0041] Now, embodiments of the present general inventive concept will be explained in detail, examples of which are illustrated in the accompanying drawings, in which like reference numerals denote like elements throughout. The embodiments are described below in order to explain the present general inventive concept by referring to the figures.

[0042] A liquid crystal display (LCD) according to an embodiment of the present general inventive concept will be described with reference to FIGS. 1 , 2A, 2B and 5 . 1 is an exploded perspective view of an LCD 1 according to an embodiment of the present general inventive concept, and FIG. 2A and FIG. 2B are respectively a sectional view and an exploded perspective view of the LCD in FIG. 1 , and FIG. A view of the brightness of the diffusing lens of the embodiment and the brightness of the conventional diffusing lens.

[0043] The LCD 1 includes an LCD panel 20, a dimming member 30, a reflector 40, a light-emitting diode (LED) circu...

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PUM

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Abstract

A backlight unit usable in an LCD includes a point light source circuit board, a plurality of point light sources seated on the point light source circuit board, and a diffusion lens provided on each point light source and comprising a depressed point and a curved surface radially protruding from the depressed point.

Description

[0001] This application claims priority from Korean Patent Application No. 2005-0111041 filed in the Korean Intellectual Property Office on Nov. 19, 2005, which is hereby incorporated by reference in its entirety. technical field [0002] The present general inventive concept relates to a backlight unit and a liquid crystal display having the same, and more particularly, to a backlight unit having point light sources and a liquid crystal display having the same. Background technique [0003] Recently, flat panel display devices such as liquid crystal displays (LCDs), plasma display panels (PDPs) and organic light emitting diodes (OLEDs) have been developed to replace conventional displays such as cathode ray tubes (CRTs). [0004] A liquid crystal display (LCD) includes an LCD panel having thin film transistors (TFTs), a color filter substrate, and liquid crystal interposed between the LCD panel and the color filter substrate. Sinc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/1335G02F1/133
CPCG02F1/133603H01L33/58G02F1/1335
Inventor 李承宰张东燮尹晟镐金昌周金善吉朴惠恩金基洙
Owner SAMSUNG ELECTRONICS CO LTD