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Light emitting device and design method of light emitting device

一种发光装置、发光元件的技术，应用在化学仪器和方法、照明装置的零部件、用于改变发射光的光谱特性的光学元件等方向，能够解决色貌考虑不充分等问题

Active Publication Date: 2020-11-06
CITIZEN ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, for these light-emitting devices aiming at high efficiency, it is pointed out from various aspects that the consideration of color appearance is insufficient

Method used

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  • Light emitting device and design method of light emitting device
  • Light emitting device and design method of light emitting device
  • Light emitting device and design method of light emitting device

Examples

Experimental program
Comparison scheme
Effect test

experiment example 201

[1086] Such as diagram 2-1As described, a resin package 10 having a diameter of 5 mm and including two light emitting parts in total was prepared. Here, a blue semiconductor light-emitting element (dominant wavelength 452.5nm), a green phosphor (LuAG, peak wavelength 530nm, full width at half maximum 104nm), and a red phosphor (CASN, peak wavelength 645nm, half-value Full width 89nm), and sealed. In addition, the blue semiconductor light-emitting element in the light-emitting region 201 forms a single independent circuit structure to form wiring for encapsulating LEDs, and is connected to a power supply. On the other hand, blue semiconductor light-emitting elements (dominant wavelength 452.5nm), green phosphors (LuAG, peak wavelength 530nm, full width at half maximum 104nm), red phosphors (CASN , peak wavelength 645nm, full width at half maximum 89nm), and sealed. In addition, the blue semiconductor light-emitting element in the light-emitting region 202 constitutes a sing...

experiment example 202

[1099] Such as Figure 2-8 As described above, a ceramic package 20 in which a light emitting portion with a diameter of 7 mm was divided into six small light emitting portions in total was prepared. Here, a blue semiconductor light-emitting element (dominant wavelength 463nm), a green phosphor (LuAG, peak wavelength 530nm, full width at half maximum 104nm), and a red phosphor (CASN, peak wavelength 645nm, 89nm wide) and sealed to form an equivalent light-emitting region. In addition, the semiconductor light emitting elements of the plurality of light emitting regions 221 are connected in series and connected to one independent power supply. On the other hand, blue semiconductor light-emitting elements (dominant wavelength 453nm), green phosphors (LuAG, peak wavelength 530nm, full width at half maximum 104nm), red phosphors (CASN, The peak wavelength is 645nm, the full width at half maximum is 89nm), and it is sealed to form an equivalent light-emitting area. In addition, t...

experiment example 203

[1113] Such as Figure 2-14 As described above, a light-emitting device as a lighting system in which a total of 90 (9×10) light-emitting parts, ie, LED bulbs, were embedded in the top was prepared. Here, an equivalent LED valve is mounted on a solid shaded portion in the figure as the light emitting region 231 to form an equivalent light emitting region. In addition, an equivalent LED valve is mounted as the light-emitting region 232 in the part hatched with a dotted line in the figure, and an equivalent light-emitting region is formed. Here, the LED light bulbs mounted in the plurality of light emitting regions 231 are connected in parallel and combined with one independent power supply. On the other hand, the LED light bulbs mounted in the plurality of light-emitting regions 32 are connected in parallel, and are combined with separate independent power sources. The light emitting region 231 and the light emitting region 232 can be driven independently. In addition, the L...

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Abstract

In "a light-emitting device capable of realizing a natural, vivid, highly visually discernible, and comfortable color appearance and object appearance", the good characteristics of the color appearance are maintained, and the shape of the spectral distribution is completely different from the conventionally known spectral distribution, Thereby improving its light source efficiency. A light-emitting device comprising at least a blue semiconductor light-emitting element, a green phosphor, and a red phosphor as light-emitting elements, wherein the light emitted from the light-emitting device in a main radiation direction satisfies all specified conditions.

Description

technical field [0001] The present invention relates to a light-emitting device having a blue semiconductor light-emitting element, a green phosphor, and a red phosphor, and a design method of the light-emitting device. Background technique [0002] In recent years, GaN-based semiconductor light-emitting devices have made remarkable progress in increasing their output and efficiency. In addition, extensive research has been conducted on improving the efficiency of semiconductor light-emitting elements or various phosphors that use electron beams as excitation sources. As a result, current lighting devices such as light sources, light source modules including light sources, appliances including light source modules, and systems including appliances have achieved rapid power saving compared with conventional ones. [0003] For example, a GaN-based blue light-emitting element is used as an excitation light source for a yellow phosphor, and a so-called pseudo-white light source...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L33/50C09K11/79C09K11/78C09K11/80C09K11/64F21K9/20F21V9/08F21V9/38F21V19/00F21Y115/10
CPCH01L33/504C09K11/7774C09K11/7769C09K11/08C09K11/77742C09K11/77348
Inventor 堀江秀善
Owner CITIZEN ELECTRONICS CO LTD
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