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公开(公告)号：US06693303B2
公开(公告)日：2004-02-17
申请号：US10166048
申请日：2002-06-11
申请人： Hiroyuki Ota , Masayuki Sonobe , Norikazu Ito , Tetsuo Fujii
发明人： Hiroyuki Ota , Masayuki Sonobe , Norikazu Ito , Tetsuo Fujii
IPC分类号： H01L2713
CPC分类号： H01L33/02 , H01L33/08 , H01L33/145 , H01L33/32
摘要： A nitride semiconductor device is composed of Group III nitride semiconductors. The device includes an active layer, and a barrier layer made from a predetermined material and provided adjacent to the active layer. The barrier layer has a greater band-gap than that of the active layer. The device also includes a barrier portion formed of the predetermined material for surrounding a threading dislocation in the active layer. The barrier portion has a vertex. The device also includes a semiconductor layer having an impurity concentration ranging from 1E16/cc to 1E17/cc in which the vertex is placed.
摘要翻译： 氮化物半导体器件由III族氮化物半导体组成。 该器件包括有源层和由预定材料制成并邻近有源层提供的阻挡层。 阻挡层具有比有源层更大的带隙。 该装置还包括由预定材料形成的阻挡部分，用于围绕有源层中的穿透位错。 阻挡部分具有顶点。 该器件还包括其中放置顶点的杂质浓度范围为1E16 / cc至1E17 / cc的半导体层。
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公开(公告)号：US20090278144A1
公开(公告)日：2009-11-12
申请号：US12085564
申请日：2006-11-28
申请人： Masayuki Sonobe , Norikazu Ito , Mitsuhiko Sakai
发明人： Masayuki Sonobe , Norikazu Ito , Mitsuhiko Sakai
IPC分类号： H01L33/00
CPC分类号： H01S5/18358 , B82Y20/00 , H01L33/105 , H01L33/32 , H01S5/34333
摘要： There is provided a nitride semiconductor light emitting device having a light reflection layer capable of preventing reflectivity from lowering and luminance from lowering due to deterioration of quality of an active layer. A nitride semiconductor laser includes at least a light emitting layer forming portion (3) provided on a first light reflection layer (2) provided on a substrate (1). The first light reflection layer (2) is formed with laminating a low refractivity layer (21) and a high refractivity layer (22) which have a different refractivity from each other, and the low refractivity layer (21) of the first light reflection layer is formed with a single layer structure of an AlxGa1-xN layer (0≦x≦1), and the high refractivity layer (22) of the first light reflection layer is formed with a multi layer structure formed by laminating alternately an AlyGa1-yN layer (0≦y≦0.5 and y
摘要翻译： 提供一种氮化物半导体发光器件，其具有能够防止由于有源层的质量劣化而引起的反射率降低和降低亮度的光反射层。 氮化物半导体激光器至少包括设置在设置在基板（1）上的第一光反射层（2）上的发光层形成部（3）。 第一光反射层（2）形成为具有彼此不同的折射率的低折射率层（21）和高折射率层（22），并且第一光反射层的低折射率层（21） 形成有Al x Ga 1-x N层（0 <= x <= 1）的单层结构，并且第一光反射层的高折射率层（22）形成有多层结构，其通过交替层叠AlyGa1 -yN层（0 <= y <= 0.5和y
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公开(公告)号：US20090206357A1
公开(公告)日：2009-08-20
申请号：US11884456
申请日：2006-02-15
申请人： Norikazu Ito , Kazuaki Tsutsumi , Toshio Nishida , Masayuki Sonobe , Mitsuhiko Sakai , Atsushi Yamaguchi
发明人： Norikazu Ito , Kazuaki Tsutsumi , Toshio Nishida , Masayuki Sonobe , Mitsuhiko Sakai , Atsushi Yamaguchi
IPC分类号： H01L33/00
摘要： There is provided a nitride semiconductor light emitting device in which a semiconductor layer is not broken easily even when a reverse voltage is applied or even in long time operation, and excellent reliability is obtained, by preventing semiconductor layers from deterioration when manufacturing a device. On a surface of a substrate (1), a semiconductor lamination portion (6) made of nitride semiconductor, including a first conductivity type layer (p-type layer (5)) and a second conductivity type layer (n-type layer (3)), is formed, a p-side electrode (8) is provided through a light transmitting conductive layer (7) thereon electrically connected to the p-type layer (5), and an n-side electrode (9) is provided electrically connected to the n-type layer (3) of the lower layer side of the semiconductor lamination portion(6). A mesa-like semiconductor lamination portion (6a) is formed by removing a part of the semiconductor lamination portion (6) around a chip by etching, and the mesa-like semiconductor lamination portion (6a) is formed such that a corner part having an angle of 90 degrees or less is rounded and has a curved line in a plan shape, thereby not to have an angle of 90 degrees or less on corner parts.
摘要翻译： 提供了一种氮化物半导体发光器件，其中即使当施加反向电压或者甚至长时间操作时，半导体层也不容易损坏，并且通过在制造器件时防止半导体层劣化，可以获得优异的可靠性。 在基板（1）的表面上，由氮化物半导体构成的包括第一导电型层（p型层（5））和第二导电型层（n型层（3））的半导体层叠部（6） ）），通过其上与p型层（5）电连接的透光导电层（7）设置p侧电极（8），并且n侧电极（9）电气地 连接到半导体层叠部分（6）的下层侧的n型层（3）。 通过蚀刻去除芯片周围的半导体层叠部分（6）的一部分形成台面状半导体层叠部（6a），并且形成台面状半导体层叠部（6a），使得具有 90度以下的角度是圆形的，并且具有平面形状的曲线，从而在角部不具有90度或更小的角度。
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公开(公告)号：US20090121240A1
公开(公告)日：2009-05-14
申请号：US12083836
申请日：2006-10-19
申请人： Yukio Shakuda , Masayuki Sonobe , Norikazu Ito
发明人： Yukio Shakuda , Masayuki Sonobe , Norikazu Ito
IPC分类号： H01L33/00 , H01L29/205 , H01L21/205
CPC分类号： H01L33/12 , H01L21/02403 , H01L21/02414 , H01L21/02433 , H01L21/02458 , H01L21/0254 , H01L21/0262 , H01L33/007
摘要： There is provided a nitride semiconductor device with low leakage current and high efficiency in which, while a zinc oxide based compound such as MgxZn1-xO (0≦x≦0.5) is used for a substrate, crystallinity of nitride semiconductor grown thereon is improved and film separation or cracks are prevented. The nitride semiconductor device is formed by laminating nitride semiconductor layers on a substrate (1) made of a zinc oxide based compound such as MgxZn1-xO (0≦x≦0.5). The nitride semiconductor layers include a first nitride semiconductor layer (2) made of AlyGa1-yN (0.05≦y≦0.2) which is provided in contact with the substrate (1), and nitride semiconductor layers (3) to (5) laminated on the first nitride semiconductor layer (2) so as to form a semiconductor element.
摘要翻译： 提供了一种具有低漏电流和高效率的氮化物半导体器件，其中，当将基于氧化锌的化合物如Mg x Zn 1-x O（0 <= x <= 0.5）用于衬底时，其上生长的氮化物半导体的结晶度为 防止了改进的膜分离或裂纹。 氮化物半导体器件通过在由诸如Mg x Zn 1-x O（0 <= x <= 0.5）的氧化锌基化合物制成的衬底（1）上层叠氮化物半导体层而形成。 氮化物半导体层包括与基板（1）接触地设置的Al y Ga 1-y N（0.05≤y≤0.2）和氮化物半导体层（3）〜（5）构成的第一氮化物半导体层（2） 层压在第一氮化物半导体层（2）上以形成半导体元件。
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公开(公告)号：US20070278474A1
公开(公告)日：2007-12-06
申请号：US11789035
申请日：2007-04-23
申请人： Kazuaki Tsutsumi , Norikazu Ito , Masayuki Sonobe , Hiroaki Ohta
发明人： Kazuaki Tsutsumi , Norikazu Ito , Masayuki Sonobe , Hiroaki Ohta
IPC分类号： H01L31/0312
摘要： A semiconductor light emitting element includes an active layer of a quantum well structure, and an n-type semiconductor layer and a p-type semiconductor layer, formed to hold the active layer therebetween. The active layer includes at least a well layer containing InGaN, and at least two barrier layers formed to hold the well layer therebetween, and containing one of InGaN and GaN. The well layer is entirely doped with one of a group IV element and a group VI element. The respective barrier layer includes a first portion closer to the p-type semiconductor layer and a second portion closer to the n-type semiconductor layer. The first portion is doped with one of the group IV element and the group VI element. The second portion is undoped.
摘要翻译： 半导体发光元件包括量子阱结构的有源层，以及形成为将活性层保持在其间的n型半导体层和p型半导体层。 有源层至少包括含有InGaN的阱层，以及形成为将阱层保持在其间并且包含InGaN和GaN中的一个的至少两个势垒层。 阱层完全掺杂有IV族元素和VI族元素之一。 各个阻挡层包括靠近p型半导体层的第一部分和靠近n型半导体层的第二部分。 第一部分掺杂有IV族元素和VI族元素之一。 第二部分是未掺杂的。
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公开(公告)号：US08222655B2
公开(公告)日：2012-07-17
申请号：US12223739
申请日：2007-02-08
IPC分类号： H01L21/00
CPC分类号： H01L33/007 , H01L21/0242 , H01L21/02458 , H01L21/02505 , H01L21/02507 , H01L21/0254 , H01L21/0262
摘要： A semiconductor light emitting device of the present invention includes a substrate (1), an n-GaN layer (2) supported by the substrate (1), a p-GaN layer (7) which is located farther from the substrate (1) than the n-GaN layer (2) is, an active layer (4) formed between the n-GaN layer (2) and the p-GaN layer (7) and containing InGaN, a sublimation preventing layer (5) formed between the active layer (4) and the p-GaN layer (7) and containing InGaN, and an In composition gradient layer (6) sandwiched between the sublimation preventing layer (5) and the p-GaN layer (7) and having such In composition ratio gradient that the In composition ratio decreases in the thickness direction toward the p-GaN layer (7).
摘要翻译： 本发明的半导体发光器件包括：衬底（1），由衬底（1）支撑的n-GaN层（2），位于离衬底（1）更远的p-GaN层（7） 在n-GaN层（2）中，形成在n-GaN层（2）和p-GaN层（7）之间并含有InGaN的有源层（4），形成在该GaN衬底之间的升华防止层（5） 有源层（4）和p-GaN层（7）并且包含InGaN，以及夹在升华防止层（5）和p-GaN层（7）之间的In组成梯度层（6），并且具有这样的In组成 In组成比在厚度方向朝向p-GaN层（7）减小的比率梯度。
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公开(公告)号：US20090014839A1
公开(公告)日：2009-01-15
申请号：US12223785
申请日：2007-02-08
IPC分类号： H01L29/20
CPC分类号： H01L33/305 , H01L21/0242 , H01L21/02458 , H01L21/0254 , H01L21/02573 , H01L21/0262 , H01L33/007 , H01L33/025 , H01S5/3063 , H01S5/32341
摘要： A nitride-based semiconductor device includes: an n-GaN layer 103; an active layer 104 formed on the n-GaN layer 103; a first AlGaN layer 105 formed on the active layer 104 at a growth temperature ranging from 900 to 1200° C. and by doping of Mg at a doping concentration ranging from 5×1019 to 2×1020/cm3; a second AlGaN layer 106 formed on the first AlGaN layer 105 at a growth temperature ranging from 900 to 1200° C.; and a p-GaN layer 107 formed on the second AlGaN layer 106.
摘要翻译： 氮化物类半导体器件包括：n-GaN层103; 形成在n-GaN层103上的有源层104; 在900〜1200℃的生长温度下在有源层104上形成的第一AlGaN层105，并以5×10 19〜2×10 20 / cm 3的掺杂浓度掺杂Mg; 在900〜1200℃的生长温度下形成在第一AlGaN层105上的第二AlGaN层106。 以及形成在第二AlGaN层106上的p-GaN层107。
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8.发明申请公开(公告)号：US20070108519A1
公开(公告)日：2007-05-17
申请号：US10583092
申请日：2004-12-16
申请人： Norikazu Ito , Masayuki Sonobe , Daisuke Nakagawa
发明人： Norikazu Ito , Masayuki Sonobe , Daisuke Nakagawa
IPC分类号： H01L29/76
CPC分类号： H01L33/32 , H01L33/145
摘要： A semiconductor lamination portion (6) is formed by laminating at least an n-type layer (3) and a p-type layer (5) made of gallium nitride based compound semiconductor so as to form a light emitting portion, and a light transmitting conductive layer (7) is formed on a surface of the semiconductor lamination portion. An upper electrode (8) is formed so as to adhere to an exposed surface of the semiconductor lamination portion exposed by etching a part of the light transmitting conductive layer, and to the light transmitting conductive layer. An electric current blocking means (10) is formed on the exposed surface of the semiconductor lamination portion which is exposed through an opening (7a) of the light transmitting conductive layer, thereby significantly preventing electric current from flowing into a part under the upper electrode while ensuring good adhesion between the upper electrode and the surface of the semiconductor lamination portion. Consequently, there can be obtained a semiconductor light emitting device using gallium nitride based compound semiconductor wherein external quantum efficiency is improved by suppressing light emission under the upper electrode while enhancing adhesion between the upper electrode and the semiconductor layer.
摘要翻译： 半导体层叠部分（6）通过层叠至少一个由氮化镓基化合物半导体制成的n型层（3）和p型层（5）形成，以形成发光部分 导电层（7）形成在半导体层叠部分的表面上。 形成上电极（8），以便通过蚀刻一部分透光导电层而露出的半导体层叠部分的露出表面和透光导电层。 在通过透光导电层的开口（7a）暴露的半导体层叠部分的暴露表面上形成电流阻挡装置（10），从而显着地防止电流流入上电极 同时确保上电极和半导体层叠部分的表面之间的良好粘合。 因此，可以获得使用氮化镓基化合物半导体的半导体发光器件，其中通过抑制上部电极下的发光，同时增强上部电极和半导体层之间的粘附性来提高外部量子效率。
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公开(公告)号：US06197609B1
公开(公告)日：2001-03-06
申请号：US09391625
申请日：1999-09-07
申请人： Tsuyoshi Tsutsui , Masayuki Sonobe , Norikazu Ito
发明人： Tsuyoshi Tsutsui , Masayuki Sonobe , Norikazu Ito
IPC分类号： H01L2100
CPC分类号： H01L33/0095
摘要： Semiconductor layers forming a light emitting layer and including an n-type layer and p-type layer are formed onto a substrate, then the n-type layer is exposed by removing a part of the laminated semiconductor layers. p-side electrode and n-side electrode are then respectively formed on the p-type layer on the surface of the laminated semiconductor layers and the exposed n-type layer, respectively in an electrically connected manner, followed by dicing of the substrate from the exposed n-type layer to the substrate at portions at which breaking of the substrate is performed. Then a protection film is provided on the entire surface of the laminated semiconductor layers as to expose the p-side and n-side electrodes, and breaking of the substrate is performed at dicing portions into individual chips. Consequently, semiconductor light emitting devices can be obtained by breaking the wafer into individual chips without etching the protection film and without damaging the protection film at the time of breaking. Also, the light emitting devices can be improved.
摘要翻译： 形成发光层并且包括n型层和p型层的半导体层形成在衬底上，然后通过去除一部分层叠半导体层而露出n型层。 p侧电极和n侧电极分别以电连接的方式分别形成在层叠半导体层的表面上的p型层和暴露的n型层上，接着从基板 在进行基板断裂的部分，将裸露的n型层涂覆在基板上。 然后在层叠半导体层的整个表面上设置保护膜，以露出p侧和n侧电极，并且在切割部分将基板的断裂进行到单独的芯片。 因此，半导体发光器件可以通过将晶片分解为单独的芯片而不蚀刻保护膜并且在破坏时不损坏保护膜来获得。 而且，可以改善发光器件。
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公开(公告)号：US08093606B2
公开(公告)日：2012-01-10
申请号：US12085564
申请日：2006-11-28
申请人： Masayuki Sonobe , Norikazu Ito , Mitsuhiko Sakai
发明人： Masayuki Sonobe , Norikazu Ito , Mitsuhiko Sakai
IPC分类号： H01L33/00
CPC分类号： H01S5/18358 , B82Y20/00 , H01L33/105 , H01L33/32 , H01S5/34333
摘要： There is provided a nitride semiconductor light emitting device having a light reflection layer capable of preventing reflectivity from lowering and luminance from lowering due to deterioration of quality of an active layer. A nitride semiconductor laser includes at least a light emitting layer forming portion (3) provided on a first light reflection layer (2) provided on a substrate (1). The first light reflection layer (2) is formed with laminating a low refractivity layer (21) and a high refractivity layer (22) which have a different refractivity from each other, and the low refractivity layer (21) of the first light reflection layer is formed with a single layer structure of an AlxGa1−xN layer (0≦x≦1), and the high refractivity layer (22) of the first light reflection layer is formed with a multi layer structure formed by laminating alternately an AlyGa1−yN layer (0≦y≦0.5 and y
摘要翻译： 提供一种氮化物半导体发光器件，其具有能够防止由于有源层的质量劣化而引起的反射率降低和降低亮度的光反射层。 氮化物半导体激光器至少包括设置在设置在基板（1）上的第一光反射层（2）上的发光层形成部（3）。 第一光反射层（2）形成为具有彼此不同的折射率的低折射率层（21）和高折射率层（22），并且第一光反射层的低折射率层（21） 形成有Al x Ga 1-x N层（0＆amp; nlE; x＆nlE; 1）的单层结构，并且第一光反射层的高折射率层（22）形成有多层结构，其通过交替层叠AlyGa1-yN 层（0＆amp; nlE; y＆nlE; 0.5和y
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