Abstract:
본 발명은 일 측면은, 기판 위에 제1 및 제2 도전형 질화물 반도체층과, 그 사이에 위치하는 활성층을 포함하는 발광구조물을 형성하는 단계와, 기판 상에 제1 도전형 질화물 반도체층, 활성층 및 제2 도전형 질화물 반도체층을 순차적으로 형성하는 단계와, 상기 제1 도전형 질화물 반도체층과 연결되는 제1 전극을 형성하는 단계와, 상기 제2 도전형 질화물 반도체층 상에 상기 제2 도전형 질화물 반도체층의 일부 영역이 노출되는 포토레지스트막을 형성하는 단계 및 상기 포토레지스트막에 의하여 노출된 상기 제2 도전형 질화물 반도체층 위에 제2 전극 구조로서 반사 금속층 및 배리어 금속층을 연속으로 형성한 후 상기 포토레지스트막을 제거하는 단계를 포함하는 질화물 반도체 발광소자의 제조방법을 제공한다.
Abstract:
PURPOSE: A semiconductor light emitting device and a manufacturing method thereof are provided to improve light extraction efficiency by inserting a bonding layer, which includes an air layer, in a semiconductor light emitting device. CONSTITUTION: A first conductive semiconductor layer(120) is formed on a reflective metal layer(110). A bonding layer is formed between the reflective metal layer and the first conductive semiconductor layer. The bonding layer includes an air layer(300) which is formed between a plurality of bonding metals(200). An active layer(130) is formed on the first conductive semiconductor layer. A second conductive semiconductor layer(140) is formed on the active layer.
Abstract:
PURPOSE: A semiconductor light emitting device and a manufacturing method thereof are provided to prevent metal elements from being spread into a reflection metal layer from an adhesive layer or a conductive substrate to increasing the reflectivity of the reflection metal layer, thereby increasing the light emitting efficiency of the light emitting device. CONSTITUTION: A reflection metal layer(14) is formed on one side of a first conductive semiconductor layer(13). The reflection metal layer includes a plurality of protrusions(20) protruded from the first conductive semiconductor layer. An active layer(12) is formed on another surface of the first conductive semiconductor layer. A second conductive semiconductor layer(11) is formed on the active layer. An n type electrode(18) is formed on the second conductive semiconductor layer.
Abstract:
A nitride semiconductor device and a method for manufacturing the same are provided to lower an operating voltage by increasing an area of a quantum well structure of an active layer. A substrate(100) is provided. An n-type clad layer(120) is formed on the substrate. A surface unevenness(120a) is formed in an upper side of the n-type clad layer. An active layer(130) is formed on the surface unevenness of the n-type clad layer according to the profile of the surface unevenness. A p-type clad layer(140) is formed on the active layer. A transparent conductor layer(150) and a p type electrode(160) are successively formed on the p-type clad layer. The p-type clad layer and the active layer are partially removed by using the mesa etching. An n-type electrode(170) is formed on the n-type clad layer exposed by the mesa etching. The surface unevenness is formed with hemi spherical shape or the polygonal shape. A buffer layer(110) is formed in the interface between the substrate and the n type clad layer.
Abstract:
PURPOSE: A method for manufacturing a semiconductor light emitting device is provided to improve a yield by preventing damage to a semiconductor layer. CONSTITUTION: A light emitting structure (120) includes a first conductive semiconductor layer (121), an active layer (122), and a second conductive semiconductor layer (123). The light emitting structure is formed on a growth substrate. A trench is formed on a part of the light emitting structure which is separated into an individual device unit with a depth not to expose the growth substrate. An insulation layer (130b) is formed on the inner surface of the trench on the surface of the light emitting structure. A support substrate (140) is formed on the light emitting structure. The growth substrate is separated from the light emitting structure. The light emitting structure is divided into each semiconductor light emitting device by cutting the light emitting structure. [Reference numerals] (AA) Razor
Abstract:
PURPOSE: A semiconductor light emitting device and a manufacturing method thereof are provided to block a leakage current path on the surface of a light emitting structure, thereby improving leakage current properties of the semiconductor light emitting device. CONSTITUTION: A light emitting structure(150) is arranged on a conductive substrate(160). The light emitting structure comprises a first conductive semiconductor layer(120), an active layer(130), and a second conductive semiconductor layer(140). A high resistance part(170) includes an ion implantation region arranged on at least a part of the surface of the second conductive semiconductor layer. A second conductive electrode(180) is arranged on the second conductive semiconductor layer.
Abstract:
A light emitting diode and a method for manufacturing the same are provided to increase a light emitting area maximally by removing a part covered with an electrode by forming a p electrode and an n electrode in a surface opposite to the light emitting surface of the unevenness surface. A light emitting laminate unit includes an n type nitride semiconductor layer(120), a p type nitride semiconductor layer, and an active layer(130) interposed between the semiconductor layers. The light emitting laminate unit includes a first surface(121), a second surface(141), and a side surface. The first surface is provided to an outer direction of the n type nitride semiconductor layer. The second surface is provided by the p type nitride semiconductor layer and is opposite to the first surface. The side surface is inclined to the n type nitride semiconductor layer and the p type nitride semiconductor with a predetermined angle. A reflective metal part(150) is formed in the second surface to contact the p type nitride semiconductor layer of the light emitting laminate unit. An insulating structure(160) is formed to surround the side surface of the light emitting laminate unit and the second surface with the highly reflective metal unit. A p electrode is connected to the highly refractive metal unit. An n electrode is connected to the n type nitride semiconductor layer.
Abstract:
PURPOSE: A manufacturing method of a nitride semiconductor light emitting device and the nitride semiconductor light emitting device formed by the same are provided to deposit a reflection metal layer and a barrier metal layer in the p-type semiconductor layer at the same time through one photoresist process. CONSTITUTION: In a manufacturing method of a nitride semiconductor light emitting device and the nitride semiconductor light emitting device formed by the same, a light emitting structure is formed on a substrate(110). The light emitting structure comprises first and second conductive nitride semiconductor layer and an active layer. The active layer is interposed between the first and second conductive nitride semiconductor layer. A first conductive nitride semiconductor layer(120), an active layer(130), and a second conductive nitride semiconductor layer(140) are formed in the top of the substrate. The first electrode is connected to the first conductive nitride semiconductor layer. A photoresist film(150) is formed on the second conductive nitride semiconductor layer. A reflective metal layer(161) and a barrier metal layer(162) are formed on the second conductive nitride semiconductor layer. The photoresist film is removed.
Abstract:
본 발명은 광추출 효율이 향상된 반도체 발광소자 및 그 제조방법에 관한 것으로, 보다 상세하게는 도전성 기판, 상기 도전성 기판 상에 형성된 제 1 도전형 반도체층, 상기 제 1 도전형 반도체층 상에 형성된 활성층, 상기 활성층 상에 형성된 제 2 도전형 반도체층 및 상기 제 2 도전형 반도체층 상에 형성되며 광출면에 요철이 구비된 투명전극을 포함하는 반도체 발광소자; 및 성장기판 상에 제 2 도전형 반도체층, 활성층 및 제 1 도전형 반도체층을 순차로 형성하는 단계, 제 1 도전형 반도체층 상에 도전성 기판을 형성하는 단계 및 상기 성장기판을 제 2 도전형 반도체층으로부터 분리하고 제 2 도전형 반도체층 상에 광출면에 요철이 구비된 투명전극을 형성하는 단계를 포함하는 반도체 발광 소자의 제조방법에 관한 것이다. 본 발명에 의하면 투명전극과 접하는 제 2 도전형 반도체층의 상에 1차 러프닝을 형성하여 굴절률 차이에 의한 빛의 트래핑(trapping) 현상을 개선하고, 출광면에 요철이 구비된 투명전극으로 전면 n형 전극을 형성하여 전극에 의해 빛이 차단되는 부분을 줄여 광추출 효율을 향상시킬 수 있다.
Abstract:
본 발명은 광추출 효율을 향상시킬 수 있는 질화물 반도체 발광소자 및 그 제조방법에 관한 것으로서, 상기 질화물 반도체 발광소자는, 도전성 기판; 상기 도전성 기판 상에 형성된 p형 반도체층; 상기 p형 반도체층 상에 형성된 활성층; 및 상기 활성층 상에 형성되고, 상면에 형성된 요철패턴과, 상기 요철패턴의 표면에 형성된 다수의 돌기를 갖는 n형 반도체층;을 포함한다.