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Semiconductor light emitting device

A light-emitting device and semiconductor technology, which is applied in the direction of semiconductor devices, semiconductor/solid-state device parts, electric solid-state devices, etc., can solve the problems of insufficient mixing and inability to obtain white light, and achieve the effect of improving color mixing

Active Publication Date: 2009-12-16
SANKEN ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the light source and lighting device disclosed in the above-mentioned Patent Document 1, the mixing of the three colors of blue light, green light and red light is not sufficient, and in particular, the red light that is not absorbed by the fluorescent filter is directly irradiated. Best white light for backlighting, general room lighting, not considered at this point

Method used

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  • Semiconductor light emitting device
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  • Semiconductor light emitting device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0050] The above-mentioned characteristics of the semiconductor light-emitting device 1 of the present embodiment regarding the color mixing property will be more clarified from the experimental results performed below.

[0051] Figure 4 to Figure 7 It is the sample used for the experiment. Figure 4 This is a cross-sectional view of the semiconductor light-emitting device 1 of this embodiment. As described above, the semiconductor light-emitting device 1 includes the first translucent resin 61 filled in the first recess 21R and the second translucent resin 61 filled in the second recess 22R. Optical resin 62.

[0052] Figure 5 to Figure 7 These are semiconductor light-emitting devices 11-13 produced as a comparative example of the semiconductor light-emitting device 1 of this embodiment. Figure 5 Although the illustrated semiconductor light emitting device 11 (Comparative Example 1) is basically similar to the semiconductor light emitting device 1 of the present embodiment, t...

Embodiment approach

[0061] As described above, although the present invention is described based on one embodiment, the statements and drawings constituting a part of this disclosure do not limit the present invention. The present invention can be applied to various alternative implementations, examples, and application technologies. For example, in the above-mentioned embodiment, an example in which the present invention is applied to a semiconductor light-emitting device 1 in which a total of eight m-emitting elements 8 are arranged in a horizontal row has been described. However, the present invention is not limited to this, and can also be applied to A semiconductor light-emitting device 1 in which a plurality of light-emitting elements other than eight are arranged in multiple rows.

[0062] Furthermore, the present invention is not limited to the two light-emitting elements of the blue light-emitting element 3B and the red light-emitting element 3R, and can be applied to semiconductor light emi...

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Abstract

The invention provides a semiconductor light emitting device capable of improving color mixing performance of light emitted from different light emitting elements, and emitting white light with high brightness and chromaticity. The semiconductor light emitting device includes: a package base having recesses which are open in a light irradiating direction; a plurality of light emitting elements arranged on bottoms of the recesses and emitting light having different colors; first light transmitting resin extending over the light emitting elements on the bottoms of the recesses and containing a fluorescent substance; and second light transmitting resin extending over the first transmitting resin in the recesses and oriented toward openings of the recesses, containing a fewer fluorescent substance than the fluorescent substance of the first light transmitting resin, and being thicker than the first light transmitting resin.

Description

Technical field [0001] The present invention relates to a semiconductor light-emitting device, and more particularly to a semiconductor light-emitting device used as a light-emitting source such as a backlight of a liquid crystal display device, a lighting device, and the like. Background technique [0002] Semiconductor light-emitting devices, in particular, light emitting diodes (LED: light emitting diodes), tend to be used for light-emitting sources such as backlights of liquid crystal display devices and general indoor lighting. Light-emitting diodes are environmentally friendly light-emitting sources that consume less power, have a long life, and do not contain harmful substances such as mercury. [0003] White light is suitably used for backlights and general indoor lighting. The following Patent Document 1 (Japanese Patent Application Laid-Open No. 2000-275636) discloses a light source and a lighting device that emit white light. The light source and lighting device altern...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L25/075H01L33/00H01L23/13H01L23/31H01L23/18H01L33/32H01L33/48H01L33/50H01L33/56H01L33/60H01L33/62
CPCH01L24/45H01L2224/45H01L33/642H01L25/0753H01L33/508H01L33/56H01L2224/45164H01L2224/45144H01L2224/45173H01L2224/48091H01L2224/48247H01L2924/12041H01L2924/181H01L2924/00014H01L2924/00H01L2924/00012
Inventor 星野匡纪佐野武志山下丰美铃木伸幸
Owner SANKEN ELECTRIC CO LTD