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    • 3. 发明申请
    • NITRIDE SEMICONDUCTOR DEVICE AND MANUFACTURING METHOD THEREOF
    • 氮化物半导体器件及其制造方法
    • US20090078943A1
    • 2009-03-26
    • US12233011
    • 2008-09-18
    • Hidetoshi ISHIDATetsuzo UEDADaisuke UEDA
    • Hidetoshi ISHIDATetsuzo UEDADaisuke UEDA
    • H01L29/15H01L21/00
    • H01L21/84H01L27/12H01L29/2003H01L29/78681
    • A nitride semiconductor device mainly made of a nitride semiconductor material having excellent heat dissipation characteristics and great crystallinity and a method for manufacturing thereof are provided. The method for manufacturing the nitride semiconductor includes vapor-depositing a diamond layer on a silicon substrate, bonding an SOI substrate on a surface of the diamond layer, thinning the SOI substrate, epitaxially growing an GaN layer on the thinned SOI substrate, removing the silicon substrate, and bonding, on a rear-surface of the diamond layer, a material having a thermal conductivity greater than a thermal conductivity of the silicon substrate. The SOI substrate has an outermost surface layer and a silicon oxide layer. In the thinning, the SOI substrate is thinned by selectively removed through the silicon oxide layer, so that only the outermost surface layer is left.
    • 提供了主要由具有优异散热特性和高结晶度的氮化物半导体材料制成的氮化物半导体器件及其制造方法。 制造氮化物半导体的方法包括在硅衬底上气相沉积金刚石层,将SOI衬底粘合在金刚石层的表面上,使SOI衬底变薄,在薄化SOI衬底上外延生长GaN层,除去硅 衬底和接合在金刚石层的后表面上,具有大于硅衬底的热导率的导热率的材料。 SOI衬底具有最外表面层和氧化硅层。 在薄化中,SOI衬底通过选择性地通过氧化硅层去除而变薄,使得仅留下最外表面层。
    • 8. 发明申请
    • LASER DEVICE AND LASER MODULE
    • 激光器件和激光模块
    • US20080112444A1
    • 2008-05-15
    • US11965315
    • 2007-12-27
    • Kenichi INOUEKazuhiko YAMANAKAKazutoshi ONOZAWADaisuke UEDA
    • Kenichi INOUEKazuhiko YAMANAKAKazutoshi ONOZAWADaisuke UEDA
    • H01S3/10
    • H01S5/02292H01S5/005H01S5/0071H01S5/02248H01S5/4012H01S5/4087
    • A laser module includes a substrate 1, a first laser element 2 placed on the substrate 1, a second laser element 3 placed with an output surface opposed to the first laser element 2 on the substrate 1, and a mirror 7 placed between the first laser element 2 and the second laser element 3. The mirror 7 has a reflective surface capable of reflecting output light from the first laser element 2 or the second laser element 3 in a predetermined direction, and is placed so as to move or rotate between a first position capable of reflecting the output light from the first laser element 2 and a second position capable of reflecting the output light from the second laser element 3. Thus, a laser module can be provided in which high precision, low cost, and miniaturization can be realized.
    • 激光模块包括基板1,放置在基板1上的第一激光元件2,在基板1上设置有与第一激光元件2相对的输出面的第二激光元件3,以及配置在第一激光器 元件2和第二激光元件3。 反射镜7具有反射表面,该反射表面能够沿着预定方向反射来自第一激光元件2或第二激光元件3的输出光,并且能够在能够反射来自第一激光元件2或第二激光元件3的输出光的第一位置之间移动或旋转 第一激光元件2和能够反射来自第二激光元件3的输出光的第二位置。 因此,可以提供可以实现高精度,低成本和小型化的激光模块。
    • 9. 发明申请
    • TRANSISTOR
    • 晶体管
    • US20070278521A1
    • 2007-12-06
    • US11758304
    • 2007-06-05
    • Hidetoshi ISHIDATsuyoshi TANAKADaisuke UEDA
    • Hidetoshi ISHIDATsuyoshi TANAKADaisuke UEDA
    • H01L31/00
    • H01L29/7787H01L29/045H01L29/0891H01L29/1066H01L29/2003H01L29/432H01L29/452
    • There is provided a normally-off type transistor made of a nitride semiconductor. The transistor includes: an undoped GaN layer which forms a channel region; an undoped Al0.2Ga0.8N layer which is formed on the undoped GaN layer and has a band gap larger than that of the undoped GaN layer; a p-type Al0.2Ga0.8N control layer which is formed on the undoped Al0.2Ga0.8N layer, has a p-type conductivity and forms a control region; an Ni gate electrode which contacts with the p-type Al0.2Ga0.8N control layer; a Ti/Al source electrode and a Ti/Al drain electrode which are formed beside the p-type Al0.2Ga0.8N control layer; and an Ni ohmic electrode which is connected to the undoped GaN layer and serves as a hole absorbing electrode. With this transistor, it is possible to achieve a large-current operation and a high switching speed.
    • 提供了由氮化物半导体制成的常关型晶体管。 晶体管包括:形成沟道区的未掺杂的GaN层; 形成在未掺杂的GaN层上并且具有比未掺杂的GaN层的带隙大的带隙的未掺杂的Al 2 O 3 Ga 0.8 N N层; 在未掺杂的Al 0.2 Ga 0.8 N上形成的p型Al 0.2 N 0.2 Ga N N N N控制层 层,具有p型导电性并形成控制区; 与p型Al 0.2 Ga 0.8 N控制层接触的Ni栅电极; 在p型Al 0.2 Ga 0.8 N控制层旁边形成的Ti / Al源电极和Ti / Al漏电极; 以及连接到未掺杂的GaN层并用作空穴吸收电极的Ni欧姆电极。 利用该晶体管,可以实现大电流动作和高切换速度。
    • 10. 发明申请
    • SEWING MACHINE
    • 缝纫机
    • US20140283723A1
    • 2014-09-25
    • US14185492
    • 2014-02-20
    • Daisuke UEDAHiroshi YAMASAKIToshiyuki MAMIYAMitsuhiro IIDAKazusa KONDO
    • Daisuke UEDAHiroshi YAMASAKIToshiyuki MAMIYAMitsuhiro IIDAKazusa KONDO
    • D05B3/02D05B55/14
    • D05B3/02D05B55/14
    • A sewing machine includes a needle bar, a needle bar up-and-down movement mechanism, a swinging mechanism, a lower shaft, an outer shuttle, a thread cutting mechanism, a rotation speed adjustment mechanism, and an actuator. The needle bar up-and-down movement mechanism is configured to move the needle bar up and down.The swinging mechanism is configured to swing the needle bar in a left-right direction. The lower shaft is configured to rotate in synchronization with up-down movement of the needle bar. The outer shuttle is configured to rotate along with rotation of the lower shaft. The thread cutting mechanism is configured to cut at least an upper thread. The rotation speed adjustment mechanism is configured to adjust a rotation speed of the outer shuttle. The actuator is a driving source of the thread cutting mechanism and the rotation speed adjustment mechanism.
    • 缝纫机包括针杆,针杆上下运动机构,摆动机构,下轴,外梭,切线机构,转速调节机构和致动器。 针杆上下移动机构配置为上下移动针杆。 摆动机构构造成使针杆向左右方向摆动。 下轴构造成与针杆的上下移动同步地旋转。 外梭被构造成随着下轴的旋转而旋转。 螺纹切割机构构造成至少切割面线。 旋转速度调节机构构成为调整外梭的转速。 致动器是切线机构和转速调节机构的驱动源。