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Optical member, backlight assembly having the optical member and display apparatus having the backlight assembly

A technology of optical components and backlight components, applied in the field of optical components, can solve the problems of increasing the volume of backlight components, etc.

Inactive Publication Date: 2005-12-28
SAMSUNG DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the light guide plate in this backlight assembly increases the volume of the backlight assembly

Method used

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  • Optical member, backlight assembly having the optical member and display apparatus having the backlight assembly
  • Optical member, backlight assembly having the optical member and display apparatus having the backlight assembly
  • Optical member, backlight assembly having the optical member and display apparatus having the backlight assembly

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Embodiment Construction

[0029] Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In the drawings, the thickness of layers, films and regions are exaggerated for clarity. The same reference numerals denote the same elements throughout. It will be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present.

[0030] figure 1 is a plan view showing part of an exemplary embodiment of an optical element according to the present invention, figure 2 is along figure 1 A cross-sectional view taken along line I-I' in .

[0031] refer to figure 1 with 2 , the optical element 100 includes, for example, polymethyl methacrylate (PMMA). PMMA, a member of the acrylic family, is a clear, rigid plastic with high transparency and is often used as a shatterproof glass replacement. The optical element 10...

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PUM

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Abstract

The invention discloses an optical element, a backlight assembly and a display device with the backlight assembly. The optical element includes a light entry surface, a light exit surface and a plurality of brightness uniformity enhancing elements. The light exit surface is opposite to the light incident surface. The brightness uniformity enhancing element is formed on at least one of the light incident surface and the light exiting surface. Each brightness uniformity enhancing element includes a concave surface formed between a first closed loop and a second closed loop surrounding the first closed loop. Therefore, luminance uniformity is enhanced due to the luminance uniformity enhancing element. Also, the distance between the display panel and the backlight assembly can be reduced to reduce the size of the display device, and the brightness of the display device can be enhanced.

Description

technical field [0001] The present invention relates to an optical element, a backlight assembly with the optical element, and a display device with the backlight assembly. More particularly, the present invention relates to an optical element capable of increasing brightness and having a smaller volume, a backlight assembly having the same, and a display device having the backlight assembly. Background technique [0002] Generally, a backlight assembly provides light to a display device to display images using the light. A liquid crystal display (LCD) device is an example of a display device that requires external light. [0003] To emit light, conventional backlight assemblies use light sources such as light emitting diodes (LEDs), cold cathode fluorescent lamps (CCFLs), flat fluorescent lamps (FFLs), and the like. [0004] CCFLs and FFLs are mainly used for large display devices, while LEDs are mainly used for small display devices. [0005] LED has some advantages suc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21V8/00G02F1/1335G02F1/13357
CPCG02B6/0018G02F1/133603G02F1/133607G02F1/1335
Inventor 金喜坤李喜春郑在晧宋时准
Owner SAMSUNG DISPLAY CO LTD
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