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Light emitting device assembly and backlight unit using the same

A technology for light-emitting devices and backlight units, which is applied to semiconductor devices, electrical solid-state devices, instruments, etc., can solve the problems of increasing the thickness of the hot spot blocking plate and complicated manufacturing processes.

Active Publication Date: 2009-05-13
LG ELECTRONICS INC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] However, the disadvantage of the backlight unit (90) of this structure is that a plurality of LED assemblies (70) must be installed with a hot spot blocking plate (80) called a shunt thereon, thus making the manufacturing process complicated
[0020] Another disadvantage is that if the hot spot blocking plate (80) is incorrectly placed on multiple LED assemblies (70), spots similar to hot spots will appear on the screen of the display
Yet another disadvantage is that the display panel increases the thickness of the hot spot blocking plate (80)

Method used

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  • Light emitting device assembly and backlight unit using the same
  • Light emitting device assembly and backlight unit using the same
  • Light emitting device assembly and backlight unit using the same

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Embodiment Construction

[0062] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0063] refer to Figure 7 , the optical lens (100) of the present invention has a hollow portion (101) in which the light-emitting device (110) for emitting light is located, a surface that refracts the light emitted by the light-emitting device (110) and makes the light reach the outside, and a surface located on the surface Recess (102). Preferably, but not necessarily, the optical lens (100) has a protruding cap shape, and a recess (102) is formed in an upper region located at the central axis (P) of the cap.

[0064] refer again Figure 7 , if the light emitting device (110) is arranged in the optical lens (100), the light emitted by the light emitting device (110) is refracted by the optical lens (100) to make it reach the outside. The recess (102) formed on the upper surface of the optical lens (100) is used to change the shape ...

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Abstract

An light emitting device package and a backlight unit using the same are disclosed, wherein light advancing upward from the light emitting device package can be refracted by a lens to enable the light having a uniform intensity to be emitted upwards to the advantage of efficiency and power consumption, even with a small number of light emitting devices.

Description

[0001] This application claims the benefit of Korean Application No. 10-2006-0011060 filed on February 6, 2006, which is incorporated herein by reference. technical field [0002] The present invention relates to a light emitting device assembly and a backlight unit using the light emitting device assembly. Background technique [0003] Existing light emitting diodes are optically provided with a dome-shaped lens, and light is limitedly distributed in a predetermined area about a central axis. If light-emitting diodes are used to manufacture a backlight unit for a liquid crystal display (LCD), one potential problem is that uniform light characteristics cannot be obtained due to light-emitting characteristics of light-emitting diodes. [0004] This means that a considerable distance is required to evenly combine the light emitted from the LEDs, making it difficult to obtain uniform light characteristics from a thin backlight unit. In other words, the backlight unit using lig...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L33/00H01L25/00H01L25/075G02F1/13357H01L33/58G02F1/1335H01L33/48
CPCH01L2224/48091H01L2224/48247H01L2924/181
Inventor 徐廷勳张峻豪
Owner LG ELECTRONICS INC