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Semiconductor laser device and display device

A technology of laser devices and semiconductors, which is applied in semiconductor laser devices, semiconductor lasers, laser devices, etc., and can solve problems such as large output

Inactive Publication Date: 2011-10-26
SANYO ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, there is a large difference in the required output of each light-emitting element depending on the oscillation wavelength of the laser light.

Method used

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  • Semiconductor laser device and display device
  • Semiconductor laser device and display device
  • Semiconductor laser device and display device

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0063] First, refer to figure 1 with figure 2 The structure of the semiconductor laser device 100 according to the first embodiment of the present invention will be described.

[0064] Such as figure 1 As shown, in the semiconductor laser device 100 according to the first embodiment of the present invention, the RGB three-wavelength semiconductor laser element unit 90 is fixed to the upper surface (surface on the C2 side) of the pedestal 110 via a conductive adhesive layer 1 such as AuSn solder. In addition, in the RGB three-wavelength semiconductor laser element part 90, there is a red semiconductor laser element 10 with an oscillation wavelength of about 655 nm, a green semiconductor laser element 30 with an oscillation wavelength of about 530 nm, and a blue semiconductor laser element 50 with a wavelength of about 480 nm. The laser beams of each color are fixed to the upper surface of the base 91 at predetermined intervals through a conductive adhesive layer 2 such as Au...

no. 2 approach

[0107] refer to Figure 6 ~ Figure 8 A second embodiment will be described. In this second embodiment, different from the above-mentioned first embodiment, a monolithic red semiconductor laser element unit 210 integrating four red semiconductor laser elements 210a to 210d is arranged on a submount 291, and two green semiconductor laser elements 210a to 210d are integrated. A case where the monolithic green semiconductor laser element unit 230 and one blue semiconductor laser element 50 in which the semiconductor laser elements 230a and 230b are integrated constitutes the RGB three-wavelength semiconductor laser element unit 290 will be described.

[0108] Such as Image 6 As shown, in the semiconductor laser device 200 according to the second embodiment of the present invention, the RGB three-wavelength semiconductor laser element portion 290 is fixed to the upper surface (surface on the C2 side) of the pedestal 206 .

[0109] Here, if Figure 7 As shown, in the second embo...

no. 3 approach

[0119] refer to Image 6 with Figure 8 ~ Figure 12 A third embodiment will be described. In this third embodiment, unlike the above-mentioned second embodiment, the green semiconductor laser element unit 330 composed of two green semiconductor laser elements 330a and 330b and one blue semiconductor laser element 350 are arranged and integrated on a base 391. The case where the RGB three-wavelength semiconductor laser element portion 390 is configured by the monolithic two-wavelength semiconductor laser element portion 370 and the red semiconductor laser element portion 210 will be described.

[0120] Such as Figure 9 As shown, in the semiconductor laser device 300 according to the third embodiment of the present invention, the RGB three-wavelength semiconductor laser element unit 390 is fixed on the upper surface of the base 206 .

[0121] Here, if Figure 9 As shown, in the third embodiment, in the RGB three-wavelength semiconductor laser element part 390, the red semic...

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Abstract

Provided is a semiconductor laser device which can flexibly respond even if a large output difference is required between a plurality of laser elements having different oscillation wavelengths when white light is reproduced. The semiconductor laser device (100) comprises a red semiconductor laser element (10) having one or more laser emitting units, a green semiconductor laser element (30) having one or more laser emitting units, and a blue semiconductor laser element (50) having one or more laser emitting units. Between at lest two of the red semiconductor laser element, green semiconductor laser element, and blue semiconductor laser element, there is a relation in which the number of laser emitting units in the semiconductor laser element which emits a relatively long wavelength is larger than the number of laser emitting units in the semiconductor laser element which emits a relatively short wavelength.

Description

technical field [0001] The present invention relates to a semiconductor laser device and a display device, and more particularly to a semiconductor laser device and a display device including a plurality of semiconductor laser elements. Background technique [0002] In recent years, the development of displays using laser light as a light source is underway. In particular, semiconductor laser elements are expected to be used as light sources for small displays. In this case, the light source can be further miniaturized by mounting semiconductor lasers emitting RGB colors in one package. [0003] Therefore, JP-A-2001-230502 currently proposes a light-emitting device including a red semiconductor laser element, a green semiconductor laser element, and a blue semiconductor laser element. [0004] Japanese Patent Application Laid-Open No. 2001-230502 discloses a light-emitting device comprising a first light-emitting element having a laser oscillator capable of emitting light ...

Claims

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Application Information

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IPC IPC(8): H01S5/022H01S5/026H01S5/40
CPCB82Y20/00H01S5/0216H01S5/24H01S5/34333H01S5/4031H01S5/405H01S5/4087H04N9/3161H01L2224/48091H01L2224/73265H01L2224/48463H01L2224/48111H01S5/320275H01S5/2201H01S5/0234H01S5/0237H01S5/02345H01L2924/00014H01S5/22
Inventor 畑雅幸久纳康光野村康彦中岛三郎
Owner SANYO ELECTRIC CO LTD
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