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Light-emitting apparatus and illuminating apparatus

A technology for light-emitting devices and light-emitting elements, which is applied to lighting devices, lighting and heating equipment, light sources, etc., can solve problems such as difficulty in controlling color temperature, improve the intensity of radiated light, suppress the reduction of light extraction efficiency, suppress color spots and Effect of Variation in Illuminance Distribution

Inactive Publication Date: 2008-03-05
KYOCERA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is a problem that it is difficult to control the color temperature

Method used

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  • Light-emitting apparatus and illuminating apparatus
  • Light-emitting apparatus and illuminating apparatus
  • Light-emitting apparatus and illuminating apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0099] First, an alumina ceramic substrate is prepared as a material of the base body 2 .

[0100] The substrate 2 is a rectangular flat plate with a length of 3.5 mm x a width of 3.5 mm x a thickness of 0.5 mm, and has a mounting portion 2a on which a light-emitting element 4 is mounted in the center of the upper surface, and a wiring conductor made of W metal facing downward from the mounting portion 2a.

[0101] In addition, the housing 3 is prepared. The frame body 3 is formed in a cylindrical shape with a diameter of 3.5 mm, a height of 1.5 mm, an upper opening of 3.3 mm in diameter, and a lower opening of 0.5 mm in diameter.

[0102] Next, the near-ultraviolet light-emitting element 4 having a thickness of 0.08 mm provided with an Au-Sn pad on the electrode is bonded to the wiring conductor through the Au-Sn pad, and at the same time, the light-emitting element 4 is surrounded. The reflective member 2 is bonded to the outer peripheral portion of the upper surface of the...

Embodiment 2

[0110] Hereinafter, an embodiment of the light emitting device 1B of the present invention will be described with reference to FIG. 3 .

[0111] In Example 2, in the light-emitting device 1B, the configurations of the base body 2 and the frame body 3 are the same as those of the first embodiment.

[0112] In addition, regarding the density of the phosphor 6, as in Example 1, the red phosphor (La 2 o 2 S:Eu) is 5.8g / cm 3 , green phosphor (BaMgAl 10 o 17 :Eu) is 3.8g / cm 3 , blue phosphor (BaMgAl 10 o 17 :Eu, Mn) is 3.8g / cm 3 . These three types of phosphors 6 are respectively blended so that the color temperature of light emitted from the light emitting device 1 becomes 6500K.

[0113] The light-transmitting member 5 is made of silicone resin with a viscosity of 0.3, 0.4, 1.3, 10, 50, and 55 Pa·s before curing, and three kinds of phosphors 6 that emit red light, green light, and blue light are added to the light-transmitting member 5. After the silicone resin was stirred...

Embodiment 3

[0120] In Example 3, in the light-emitting device, the configurations of the base body 2 and the frame body 3 are the same as those in Example 1. FIG.

[0121] Regarding the density of phosphor 6, the red phosphor (La 2 o 2 :Eu) is 5.8g / cm 3 , green phosphor ((BaMgAl) 10 o 12 :Eu, Mn) is 3.8g / cm 3 , blue phosphor ((Sr, Ca, Ba, Mg) 10 (PO 4 ) 6 o 12 :Eu) is 3.8g / cm 3 . Mix these 3 phosphors 6 .

[0122] The light-transmitting member 5 used a silicone resin whose viscosity before curing was 1.7 Pa·s, and vacuum degassed it with a vacuum defoamer in an uncured state. In the vacuum degassed silicone resin, the volume of the phosphor reaches 1 / 30 times, 1 / 24 times, 1 / 18 times, 1 / 15 times, 1 / 12 times, 1 / 6 times the volume of the silicone resin 1 / 5 times, 1 / 5 times, respectively mixed phosphor 6 mixed in such a way that the required visible light can be output inside. That is, in the vacuum defoamed silicone resin, according to the volume ratio of phosphor and silicone r...

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Abstract

There is provided a light-emitting apparatus with favorable radiation light intensity, which is excellent in light extraction efficiency, color temperature and color rendering property. The light-emitting apparatus includes a light-emitting element, a base body having, on its top surface, a placement portion for emplacing thereon the light-emitting element, a frame body attached to the top surface of the base body so as to surround the placement portion, a light transmitting member disposed inside the frame body so as to cover the light-emitting element, and phosphors contained in the light transmitting member, which performs wavelength conversion on the light emitted from the light-emitting element. The light transmitting member has a pre-cured viscosity ranging from 0.4 to 50 Pa.s.

Description

technical field [0001] The present invention relates to a light emitting device and an illuminating device which convert the wavelength of light emitted from a light emitting element such as a light emitting diode by a phosphor and radiate it to the outside. Background technique [0002] 8 is a cross-sectional view showing a light-emitting device 101 that can emit light of any color by a phosphor 106 that can convert light such as near-ultraviolet light or blue light emitted from a light-emitting element 104 such as a conventional light-emitting diode (LED). Into red, green, blue, yellow and other light. In FIG. 8, a light emitting device 101 mainly includes: a substrate 102, which is made of an insulator, has a mounting portion 102a for mounting a light emitting element 104 at the center of the upper surface, and a wiring conductor (not shown) is formed on the insulator. , the wiring conductor is composed of lead terminals and metal wirings that are electrically connected ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L33/00F21S2/00F21Y101/02F21K99/00F21YH01L21/00H01L27/15H01L33/50H01L33/56
CPCH01L33/56H01L33/501H01L2924/0002H01L2924/00B27M1/003B27C5/00B27D5/00
Inventor 森裕树三宅彻
Owner KYOCERA CORP
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