公开(公告)号：US08507305B2

公开(公告)日：2013-08-13

申请号：US13443480

申请日：2012-04-10

申请人： Yusuke Yoshizumi ,  Yohei Enya ,  Takashi Kyono ,  Takamichi Sumitomo ,  Nobuhiro Saga ,  Masahiro Adachi ,  Kazuhide Sumiyoshi ,  Shinji Tokuyama ,  Shimpei Takagi ,  Takatoshi Ikegami ,  Masaki Ueno ,  Koji Katayama

发明人： Yusuke Yoshizumi ,  Yohei Enya ,  Takashi Kyono ,  Takamichi Sumitomo ,  Nobuhiro Saga ,  Masahiro Adachi ,  Kazuhide Sumiyoshi ,  Shinji Tokuyama ,  Shimpei Takagi ,  Takatoshi Ikegami ,  Masaki Ueno ,  Koji Katayama

IPC分类号： H01L21/00

CPC分类号： H01S5/34333 ,  B82Y20/00 ,  H01S5/0202 ,  H01S5/0207 ,  H01S5/2201 ,  H01S5/3202

摘要： A III-nitride semiconductor laser device is provided with a laser structure and an electrode. The laser structure includes a support base which includes a hexagonal III-nitride semiconductor and a semipolar primary surface, and a semiconductor region provided on the semipolar primary surface. The electrode is provided on the semiconductor region. The semiconductor region includes a first cladding layer of a first conductivity type GaN-based semiconductor, a second cladding layer of a second conductivity type GaN-based semiconductor, and an active layer provided between the first cladding layer and the second cladding layer.

摘要翻译： III族氮化物半导体激光器件具有激光结构和电极。 激光器结构包括支撑基底，其包括六边形III族氮化物半导体和半极性主表面，以及设置在半极性主表面上的半导体区域。 电极设置在半导体区域上。 半导体区域包括第一导电型GaN基半导体的第一包层，第二导电型GaN基半导体的第二包层和设置在第一包层和第二包层之间的有源层。

公开(公告)号：US08415707B2

公开(公告)日：2013-04-09

申请号：US12834977

申请日：2010-07-13

申请人： Shinji Tokuyama ,  Masaki Ueno ,  Masahiro Adachi ,  Takashi Kyono ,  Takamichi Sumitomo ,  Koji Katayama ,  Yoshihiro Saito

发明人： Shinji Tokuyama ,  Masaki Ueno ,  Masahiro Adachi ,  Takashi Kyono ,  Takamichi Sumitomo ,  Koji Katayama ,  Yoshihiro Saito

IPC分类号： H01L33/00

CPC分类号： H01L21/28575 ,  H01L29/045 ,  H01L29/2003 ,  H01L29/452 ,  H01L33/32 ,  H01L33/40

摘要： A Group III nitride semiconductor device has a semiconductor region, a metal electrode, and a transition layer. The semiconductor region has a surface comprised of a Group III nitride crystal. The semiconductor region is doped with a p-type dopant. The surface is one of a semipolar surface and a nonpolar surface. The metal electrode is provided on the surface. The transition layer is formed between the Group III nitride crystal of the semiconductor region and the metal electrode. The transition layer is made by interdiffusion of a metal of the metal electrode and a Group III nitride of the semiconductor region.

摘要翻译： III族氮化物半导体器件具有半导体区域，金属电极和过渡层。 半导体区域具有由III族氮化物晶体组成的表面。 半导体区域掺杂有p型掺杂剂。 表面是半极性表面和非极性表面之一。 金属电极设置在表面上。 在半导体区域的III族氮化物晶体和金属电极之间形成过渡层。 过渡层是通过金属电极的金属和半导体区域的III族氮化物的相互扩散而制成的。

公开(公告)号：US08395930B2

公开(公告)日：2013-03-12

申请号：US13596154

申请日：2012-08-28

申请人： Shunsaku Muraoka ,  Takeshi Takagi ,  Satoru Mitani ,  Koji Katayama

发明人： Shunsaku Muraoka ,  Takeshi Takagi ,  Satoru Mitani ,  Koji Katayama

IPC分类号： G11C11/21

CPC分类号： G11C13/0007 ,  G11C13/0069 ,  G11C2013/0083 ,  G11C2213/72 ,  G11C2213/79 ,  H01L45/08 ,  H01L45/1233 ,  H01L45/146 ,  H01L45/1625

摘要： A method includes applying a first polarity writing voltage pulse to a metal oxide layer to change its resistance state from high to low into a write state, applying a second polarity erasing voltage pulse different from the first polarity to the metal oxide layer to change its resistance state from low to high into an erase state, and applying an initial voltage pulse having the second polarity to the metal oxide layer before first application of the writing voltage pulse, to change an initial resistance value of the metal oxide layer. R0>RH>RL and |V0|>|Ve|≧|Vw| are satisfied where R0, RL, and RH are the resistance values of the initial, write, and erase states, respectively, of the metal oxide layer, and V0, Vw, and Ve are voltage values of the initial, writing, and erasing voltage pulses, respectively.

摘要翻译： 一种方法包括：将第一极性写入电压脉冲施加到金属氧化物层，以将其电阻状态从高变为低电平变为写入状态，将不同于第一极性的第二极性擦除电压脉冲施加到金属氧化物层以改变其电阻 状态从低到高进入擦除状态，以及在首次施加写入电压脉冲之前将具有第二极性的初始电压脉冲施加到金属氧化物层，以改变金属氧化物层的初始电阻值。 R0> RH> RL和| V0 |> | Ve |≥| Vw | 满足R0，RL和RH分别是金属氧化物层的初始，写入和擦除状态的电阻值，V0，Vw和Ve是初始，写入和擦除电压的电压值 脉冲。

公开(公告)号：US20130037775A1

公开(公告)日：2013-02-14

申请号：US13567646

申请日：2012-08-06

申请人： Satoru Mitani ,  Yoshihiko Kanzawa ,  Koji Katayama ,  Takeshi Takagi

发明人： Satoru Mitani ,  Yoshihiko Kanzawa ,  Koji Katayama ,  Takeshi Takagi

IPC分类号： H01L45/00 ,  H01L21/02

CPC分类号： G11C13/0069 ,  G11C13/0007 ,  G11C2213/32 ,  G11C2213/34 ,  G11C2213/71 ,  G11C2213/79 ,  H01L27/101 ,  H01L27/2409 ,  H01L27/2436 ,  H01L27/2481 ,  H01L45/08 ,  H01L45/1233 ,  H01L45/146 ,  H01L45/1625

摘要： A nonvolatile memory element of the present invention comprises a first electrode (103), a second electrode (108); a resistance variable layer (107) which is interposed between the first electrode (103) and the second electrode (107) and is configured to switch a resistance value reversibly in response to an electric signal applied between the electrodes (103) and (108), and the resistance variable layer (107) has at least a multi-layer structure in which a first hafnium-containing layer having a composition expressed as HfOx (0.9≦x≦1.6), and a second hafnium-containing layer having a composition expressed as HfOy (1.8≦y≦2.0) are stacked together.

摘要翻译： 本发明的非易失性存储元件包括第一电极（103），第二电极（108） 介于第一电极（103）和第二电极（107）之间的电阻变化层（107），其被配置成响应于施加在电极（103）和（108）之间的电信号可逆地切换电阻值， ，并且电阻变化层（107）具有至少多层结构，其中具有表示为HfO x（0.9＆nlE; x＆nlE; 1.6）的组成的第一含铪层和具有组成的第二含铪层 表示为HfOy（1.8＆nlE; y＆nlE; 2.0）堆叠在一起。

公开(公告)号：US08361885B2

公开(公告)日：2013-01-29

申请号：US13300220

申请日：2011-11-18

申请人： Yusuke Yoshizumi ,  Shimpei Takagi ,  Takatoshi Ikegami ,  Masaki Ueno ,  Koji Katayama

发明人： Yusuke Yoshizumi ,  Shimpei Takagi ,  Takatoshi Ikegami ,  Masaki Ueno ,  Koji Katayama

IPC分类号： H01L21/00

CPC分类号： H01S5/3202 ,  B82Y20/00 ,  G01N21/62 ,  H01S5/0014 ,  H01S5/0202 ,  H01S5/1082 ,  H01S5/1085 ,  H01S5/20 ,  H01S5/2009 ,  H01S5/34333

摘要： A method of fabricating group-III nitride semiconductor laser device includes: preparing a substrate comprising a hexagonal group-III nitride semiconductor and having a semipolar principal surface; forming a substrate product having a laser structure, an anode electrode, and a cathode electrode, where the laser structure includes a semiconductor region and the substrate, where the semiconductor region is formed on the semipolar principal surface; scribing a first surface of the substrate product in a direction of an a-axis of the hexagonal group-III nitride semiconductor to form first and second scribed grooves; and carrying out breakup of the substrate product by press against a second surface of the substrate product, to form another substrate product and a laser bar.

摘要翻译： 制造III族氮化物半导体激光器件的方法包括：制备包括六方晶III-III族氮化物半导体并具有半极性主表面的衬底; 形成具有激光结构的基板产品，阳极电极和阴极电极，其中所述激光器结构包括半导体区域和所述基板，其中所述半导体区域形成在所述半极性主表面上; 在六方晶III族氮化物半导体的a轴的方向上刻划基板产品的第一表面以形成第一和第二划线槽; 并且通过压靠衬底产品的第二表面进行衬底产品的分解，以形成另一衬底产品和激光棒。

公开(公告)号：US08279658B2

公开(公告)日：2012-10-02

申请号：US12994462

申请日：2010-03-25

申请人： Shunsaku Muraoka ,  Takeshi Takagi ,  Satoru Mitani ,  Koji Katayama

发明人： Shunsaku Muraoka ,  Takeshi Takagi ,  Satoru Mitani ,  Koji Katayama

IPC分类号： G11C11/21

CPC分类号： G11C13/0007 ,  G11C13/0069 ,  G11C2013/0083 ,  G11C2213/72 ,  G11C2213/79 ,  H01L45/08 ,  H01L45/1233 ,  H01L45/146 ,  H01L45/1625

摘要： Applying a writing voltage pulse having a first polarity to a metal oxide layer (3) to change a resistance state of the metal oxide layer (3) from high to low so as to render the resistance state a write state, applying an erasing voltage pulse having a second polarity different from the first polarity to the metal oxide layer (3) to change the resistance state of the metal oxide layer (3) from low to high so as to render the resistance state an erase state, and applying an initial voltage pulse having the second polarity to the metal oxide layer (3) before the applying of a writing voltage pulse is performed for a first time, to change a resistance value of an initial state of the metal oxide layer (3) are included, and R0>RH>RL and |V0|>|Ve|≧|Vw| are satisfied where R0, RL, and RH are the resistance values of the initial, write, and erase states, respectively, of the metal oxide layer (3), and V0, Vw, and Ve are voltage values of the initial, writing, and erasing voltage pulses, respectively.

摘要翻译： 将具有第一极性的写入电压脉冲施加到金属氧化物层（3）以将金属氧化物层（3）的电阻状态从高变为低，以使电阻状态成为写入状态，施加擦除电压脉冲 具有与第一极性不同于金属氧化物层（3）的第二极性，以将金属氧化物层（3）的电阻状态从低到高改变为使得电阻状态为擦除状态，并且施加初始电压 首先执行施加写入电压脉冲之前对金属氧化物层（3）具有第二极性的脉冲，以改变金属氧化物层（3）的初始状态的电阻值，并且R0 > RH> RL和| V0 |> | Ve |≥| Vw | 满足R0，RL和RH分别为金属氧化物层（3）的初始，写入和擦除状态的电阻值，V0，Vw和Ve为初始，写入和写入的电压值， 并分别擦除电压脉冲。

公开(公告)号：US20120230085A1

公开(公告)日：2012-09-13

申请号：US13511275

申请日：2011-09-28

申请人： Ken Kawai ,  Kazuhiko Shimakawa ,  Koji Katayama ,  Shunsaku Muraoka

发明人： Ken Kawai ,  Kazuhiko Shimakawa ,  Koji Katayama ,  Shunsaku Muraoka

IPC分类号： G11C11/00

CPC分类号： H01L27/101 ,  G11C13/0007 ,  G11C13/0064 ,  G11C13/0069 ,  G11C2013/0073 ,  G11C2013/0083 ,  G11C2213/32 ,  G11C2213/72 ,  G11C2213/79 ,  H01L27/2409 ,  H01L45/08 ,  H01L45/1233 ,  H01L45/146

摘要： In forming, an automatic forming circuit (210) included in a nonvolatile memory device (200) causes a constant current IL to flow in a selected memory cell having a considerably high initial resistance. When the forming generates a filament path in the memory cell and thereby a resistance value is decreased, a potential of a node NBL and a potential of a node Nin are also decreased. If the potentials become lower than that of a reference voltage Vref, an output NO of a difference amplifier (303) for detecting forming success is activated, and a forming success signal Vfp is activated after a delay time depending on the number n of flip flops FF1 to FFn and a clock signal CLK. Thereby, a switch transistor (301) is in a non-conducting state and the forming on a variable resistance element is automatically terminated.

摘要翻译： 在形成时，包括在非易失性存储器件（200）中的自动形成电路（210）使得恒定电流IL流过具有相当高的初始电阻的所选择的存储单元。 当形成在存储单元中产生细丝通路并由此电阻值减小时，节点NBL的电位和节点Nin的电位也减小。 如果电位变得低于参考电压Vref的电位，则激活用于检测成形成功的差分放大器（303）的输出NO，并且根据触发器的数量n在延迟时间之后激活形成成功信号Vfp FF1〜FFn和时钟信号CLK。 由此，开关晶体管（301）处于非导通状态，可变电阻元件上的形成自动终止。

公开(公告)号：US20120214268A1

公开(公告)日：2012-08-23

申请号：US13404310

申请日：2012-02-24

申请人： Shimpei TAKAGI ,  Yusuke Yoshizumi ,  Koji Katayama ,  Masaki Ueno ,  Takatoshi Ikegami

发明人： Shimpei TAKAGI ,  Yusuke Yoshizumi ,  Koji Katayama ,  Masaki Ueno ,  Takatoshi Ikegami

IPC分类号： H01L33/02

CPC分类号： H01S5/1085 ,  B82Y20/00 ,  H01L33/0045 ,  H01L33/16 ,  H01L33/32 ,  H01S5/0202 ,  H01S5/0208 ,  H01S5/2201 ,  H01S5/3202 ,  H01S5/3404 ,  H01S5/34333

摘要： A method of fabricating a III-nitride semiconductor laser device includes: preparing a substrate product, where the substrate product has a laser structure, the laser structure includes a semiconductor region and a substrate of a hexagonal III-nitride semiconductor, the substrate has a semipolar primary surface, and the semiconductor region is formed on the semipolar primary surface; scribing a first surface of the substrate product to form a scribed mark, the scribed mark extending in a direction of an a-axis of the hexagonal III-nitride semiconductor; and after forming the scribed mark, carrying out breakup of the substrate product by press against a second region of the substrate product while supporting a first region of the substrate product but not supporting the second region thereof, to form another substrate product and a laser bar.

摘要翻译： 一种制造III族氮化物半导体激光器件的方法包括：制备衬底产品，其中衬底产品具有激光结构，激光结构包括半导体区域和六边形III族氮化物半导体的衬底，该衬底具有半极性 主表面，并且半导体区域形成在半极性主表面上; 划定基板产品的第一表面以形成划刻标记，所述划线标记沿所述六边形III族氮化物半导体的a轴方向延伸; 并且在形成划线之后，在支撑基板产品的第一区域但不支撑其第二区域的同时通过压靠基板产品的第二区域来进行基板产品的分解，以形成另一基板产品和激光条 。

公开(公告)号：US20120100654A1

公开(公告)日：2012-04-26

申请号：US13289507

申请日：2011-11-04

申请人： Shimpei TAKAGI ,  Yusuke Yoshizumi ,  Koji Katayama ,  Masaki Ueno ,  Takatoshi Ikegami

发明人： Shimpei TAKAGI ,  Yusuke Yoshizumi ,  Koji Katayama ,  Masaki Ueno ,  Takatoshi Ikegami

IPC分类号： H01L33/32

CPC分类号： H01S5/34333 ,  B82Y20/00 ,  H01S5/0014 ,  H01S5/0202 ,  H01S5/028 ,  H01S5/0425 ,  H01S5/1082 ,  H01S5/1085 ,  H01S5/16 ,  H01S5/3202 ,  H01S2301/14

摘要： A method of fabricating a III-nitride semiconductor laser device includes: preparing a substrate having a hexagonal III-nitride semiconductor and having a semipolar primary surface; forming a substrate product having a laser structure, an anode electrode and a cathode electrode, the laser structure including a substrate and a semiconductor region formed on the semipolar primary surface; scribing a first surface of the substrate product in part in a direction of the a-axis of the hexagonal III-nitride semiconductor; and carrying out breakup of the substrate product by press against a second surface of the substrate product, to form another substrate product and a laser bar.

摘要翻译： 一种制造III族氮化物半导体激光器件的方法包括：制备具有六边形III族氮化物半导体并具有半极性主表面的衬底; 形成具有激光结构的衬底产品，阳极电极和阴极电极，所述激光器结构包括形成在所述半极性主表面上的衬底和半导体区域; 在六边形III族氮化物半导体的a轴的方向上划分基板产品的第一表面; 并且通过压靠衬底产品的第二表面进行衬底产品的分解，以形成另一衬底产品和激光棒。

公开(公告)号：US20120058583A1

公开(公告)日：2012-03-08

申请号：US13240368

申请日：2011-09-22

申请人： Yusuke Yoshizumi ,  Yohei Enya ,  Takashi Kyono ,  Masahiro Adachi ,  Katsushi Akita ,  Masaki Ueno ,  Takamichi Sumitomo ,  Shinji Tokuyama ,  Koji Katayama ,  Takao Nakamura ,  Takatoshi Ikegami

发明人： Yusuke Yoshizumi ,  Yohei Enya ,  Takashi Kyono ,  Masahiro Adachi ,  Katsushi Akita ,  Masaki Ueno ,  Takamichi Sumitomo ,  Shinji Tokuyama ,  Koji Katayama ,  Takao Nakamura ,  Takatoshi Ikegami

IPC分类号： H01L33/62

CPC分类号： H01S5/34333 ,  B82Y20/00 ,  H01S5/0202 ,  H01S5/028 ,  H01S5/3202 ,  H01S2301/14

摘要： Provided is a group-III nitride semiconductor laser device with a laser cavity allowing for a low threshold current, on a semipolar surface of a support base in which the c-axis of a hexagonal group-III nitride is tilted toward the m-axis. First and second fractured faces 27, 29 to form the laser cavity intersect with an m-n plane. The group-III nitride semiconductor laser device 11 has a laser waveguide extending in a direction of an intersecting line between the m-n plane and the semipolar surface 17a. In a laser structure 13, a first surface 13a is opposite to a second surface 13b. The first and second fractured faces 27, 29 extend from an edge 13c of the first surface to an edge 13d of the second surface 13b. The fractured faces are not formed by dry etching and are different from conventionally-employed cleaved facets such as c-planes, m-planes, or a-planes.

摘要翻译： 提供了在六边形III族氮化物的c轴朝向m轴倾斜的支撑基座的半极性表面上具有允许低阈值电流的激光腔的III族氮化物半导体激光器件。 第一和第二断裂面27,29以形成与m-n平面相交的激光腔。 III族氮化物半导体激光器件11具有在m-n平面和半极性表面17a之间的交线的方向上延伸的激光波导。 在激光结构13中，第一表面13a与第二表面13b相对。 第一和第二断裂面27,29从第一表面的边缘13c延伸到第二表面13b的边缘13d。 断裂面不是通过干蚀刻形成的，并且与常规使用的切割面不同，例如c面，m面或a平面。