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Light emitting device

A technology for light-emitting devices and light-emitting structures, applied in semiconductor devices, electrical solid-state devices, electrical components, etc., can solve problems such as lattice mismatch, reduction in luminous efficiency, and defects in semiconductor layers.

Active Publication Date: 2019-05-14
SUZHOU LEKIN SEMICON CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] However, when irregularities are formed on the surface of an insulating substrate such as sapphire, the semiconductor layer constituting the light emitting structure is prone to defects, and it may be due to the crystal gap between the insulating substrate and the light emitting structure formed on the insulating substrate. Lattice mismatch cannot grow homogeneously, so that the luminous efficiency is reduced due to the crystal defects existing in the semiconductor layer

Method used

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Embodiment Construction

[0038] Hereinafter, the embodiments will be described with reference to the drawings.

[0039] It will be understood that when an element is referred to as being "on" or "under" another element, it can be directly on / under the element, and one or more intervening elements may also be present. When an element is referred to as being "on" or "under", "below the element" as well as "above the element" may be included based on the element.

[0040] In the drawings, the thickness or size of each layer is exaggerated, omitted, or schematically shown for convenience of explanation and clarity. In addition, the size or area of ​​each constituent element does not utterly reflect the actual size thereof.

[0041] Hereinafter, embodiments of the present disclosure to achieve the objects will be described with reference to the accompanying drawings.

[0042] figure 1 is a cross-sectional view illustrating a light emitting device according to an embodiment.

[0043] figure 1 The illus...

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Abstract

The invention discloses a light-emitting device, a light-emitting device package, and lighting equipment. The light-emitting device includes: a substrate; a light extraction layer arranged on the substrate, and the light extraction layer has a refractive index higher than that of the substrate and lower than the refractive index of the light emitting structure, and includes a first region contacting the substrate and a second region arranged opposite to the first region, the first region having a cross-sectional area larger than that of the second region; and emitting light The structure is arranged on the substrate and the light extraction layer, and the light emitting structure includes a first conductivity type semiconductor layer, a second conductivity type semiconductor layer and an active layer. The light emitting device of the invention has higher light extraction efficiency.

Description

[0001] Cross References to Related Applications [0002] This application claims priority from Korean Patent Application No. 10-2013-0118320 filed in Korea on Oct. 4, 2013, which is hereby incorporated by reference in its entirety as if it were described in its entirety herein. technical field [0003] Embodiments relate to a light emitting device, and more particularly, to a horizontal light emitting device having improved light extraction efficiency. Background technique [0004] Based on the development of thin-film growth technology and device materials, light-emitting devices such as light-emitting diodes or laser diodes using III-V or II-VI compound semiconductor materials realize light with various colors (such as red, green, and ultraviolet), through White light that achieves superior efficacy using fluorescent materials or combining two or more colors, and has advantages such as low power consumption, semi-permanent lifespan, high response speed, safety, and environ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L33/44H01L33/48
CPCH01L33/44H01L33/46H01L33/48H01L33/007H01L2224/48091H01L2224/48247H01L2224/73265H01L2924/00014H01L33/20H01L33/10H01L33/22H01L2933/0091
Inventor 成演准丁圣勋
Owner SUZHOU LEKIN SEMICON CO LTD