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Backlight unit and liquid crystal display employing the same

A liquid crystal display, backlight unit technology, applied to static indicators, instruments, optics, etc., can solve problems such as difficult to effectively eliminate motion blur, afterimage residue, etc.

Inactive Publication Date: 2006-11-22
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] However, since the conventional direct light type backlight unit fails to prevent the light emitted from one selected partition from intruding into the adjacent area, it is difficult to effectively eliminate the motion blur phenomenon due to afterimage retention when the image frame changes to another

Method used

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

Examples

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Embodiment Construction

[0032] The present invention will now be described more fully with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown.

[0033] In the backlight unit according to the present invention, the heat radiation structure is provided in the backlight unit. And, the backlight unit has a structure used as a light source for the LCD, the backlight unit has N partitions to sequentially emit light in synchronization with the scanning time of the liquid crystal panel, the light source (for example, LED) is provided between the barrier ribs defining the partitions, and the heat radiation means ( For example, heat radiating fins) are attached to opposing barrier rib wall surfaces, and a partition bisects light reflection and heat radiation.

[0034] 2 is a perspective view partially showing a backlight unit according to an exemplary embodiment of the present invention, and image 3 is a detailed view of selected portions of FIG. 2 .

[0035] R...

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Abstract

A backlight unit and an LCD employing the backlight unit are provided. The backlight unit includes: a plurality of division areas; a light source which is able to be lighted and is disposed on one sidewall surface of a barrier rib defining the plurality of division areas; and a heat radiation device disposed on an opposite wall surface of the barrier rib to the one sidewall surface, wherein each of the plurality of division areas is constructed to bi-divide light reflection and heat radiation.

Description

technical field [0001] The present invention relates to a backlight unit and a liquid crystal display using the backlight unit, in particular, a backlight unit capable of performing heat radiation and sequentially partitioned light emission and a liquid crystal display using the backlight unit. Background technique [0002] A liquid crystal display (LCD), which is a flat panel display, is a light-receiving display that does not emit light by itself but forms an image using incident light from an external source. A backlight unit is disposed behind the LCD to emit light toward the liquid crystal panel. [0003] A cold cathode fluorescent lamp (CCFL) is generally used as a light source of a backlight unit of an LCD. However, CCFL has relatively short lifetime and low color reproducibility. CCFLs are less favorable than light-emitting diodes (LEDs) in terms of lifetime and color reproduction, and are also more unfavorable than LEDs in terms of instant light emission. [0004...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/1335
CPCG02F1/133603G09G3/342G09G2310/024G02F1/133628G02F1/1335
Inventor 成基范赵泰熙王种敏吴镇庆金洙君郑一龙
Owner SAMSUNG ELECTRONICS CO LTD
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