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    • 125. 发明授权
    • Transistor
    • 晶体管
    • US07683399B2
    • 2010-03-23
    • US11758304
    • 2007-06-05
    • Hidetoshi IshidaTsuyoshi TanakaDaisuke Ueda
    • Hidetoshi IshidaTsuyoshi TanakaDaisuke Ueda
    • H01L31/0328
    • 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GaN层; 未掺杂的Al0.2Ga0.8N层,其形成在未掺杂的GaN层上,并且具有比未掺杂的GaN层的带隙大的带隙; 形成在未掺杂的Al0.2Ga0.8N层上的p型Al0.2Ga0.8N控制层具有p型导电性并形成控制区; 与p型Al0.2Ga0.8N控制层接触的Ni栅电极; 形成在p型Al0.2Ga0.8N控制层旁边的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。
    • 127. 发明授权
    • In-vehicle input unit
    • 车载输入单元
    • US07603214B2
    • 2009-10-13
    • US11432530
    • 2006-05-12
    • Tsuyoshi TanakaYasushi Ishiai
    • Tsuyoshi TanakaYasushi Ishiai
    • G05G1/02G05G1/08
    • B60K37/06B60K2350/928G02B27/01
    • An in-vehicle input unit is provided which includes: a head-up display which projects a hierarchical menu for operating a plurality of pieces of in-vehicle equipment onto a windshield in front of a driver's seat, and displays the hierarchical menu as a virtual image ahead of the windshield; and a plurality of switches which are disposed in a steering wheel so that several switches adjoin and surround one central switch, in which the head-up display displays selection items on the hierarchical menu as the virtual image so that the selection items correspond one to one to the plurality of switches disposed in the steering wheel.
    • 提供一种车载输入单元,其包括:平视显示器,其将用于操作多个车载设备的分层菜单投射到驾驶员座椅前方的挡风玻璃上,并将该分层菜单显示为虚拟 挡风玻璃前方的图像; 以及多个开关,其设置在方向盘中,使得几个开关邻接并围绕一个中央开关,其中平视显示器将分层菜单上的选择项目显示为虚拟图像,使得选择项目对应于一对一 到设置在方向盘中的多个开关。
    • 128. 发明授权
    • System and method for performance monitoring and reconfiguring computer system with hardware monitor
    • 使用硬件监视器对性能监控和重新配置计算机系统的系统和方法
    • US07577770B2
    • 2009-08-18
    • US11771397
    • 2007-06-29
    • Tsuyoshi TanakaYoshiki Murakami
    • Tsuyoshi TanakaYoshiki Murakami
    • G06F3/00
    • G06F11/3419G06F11/3466G06F2201/87G06F2201/88
    • A judgment is made quickly about whether or not it is a memory or a chipset that is causing a performance bottleneck in an application program. A computer system of this invention includes at least one CPU, a controller that connects the CPU to a memory and to an I/O interface, in which the controller includes a response time measuring unit, which receives a request to access the memory and measures a response time taken to respond to the memory access request, a frequency counting unit, which measures an issue count of the memory access request, a measurement result storing unit, which stores a measurement result associating the response time with the corresponding issue count, and a measurement result control unit which outputs the measurement result stored in the measurement result storing unit when receiving a measurement result read request.
    • 快速判断是否是在应用程序中导致性能瓶颈的存储器或芯片组。 本发明的计算机系统包括至少一个CPU,将CPU连接到存储器和I / O接口的控制器,其中控制器包括响应时间测量单元,其接收访问存储器的请求并测量 对存储器访问请求进行响应的响应时间;测量存储器访问请求的发行次数的频率计数单元;存储将响应时间与相应发行次数相关联的测量结果的测量结果存储单元;以及 测量结果控制单元,当接收到测量结果读取请求时,输出存储在测量结果存储单元中的测量结果。
    • 130. 发明授权
    • Semiconductor device
    • 半导体器件
    • US07528423B2
    • 2009-05-05
    • US11681408
    • 2007-03-02
    • Hiroaki UenoTetsuzo UedaYasuhiro UemotoDaisuke UedaTsuyoshi TanakaManabu YanagiharaYutaka HiroseMasahiro Hikita
    • Hiroaki UenoTetsuzo UedaYasuhiro UemotoDaisuke UedaTsuyoshi TanakaManabu YanagiharaYutaka HiroseMasahiro Hikita
    • H01L31/072H01L31/109
    • H01L29/7786H01L29/2003
    • It is an object of the present invention to provide a semiconductor device, which can simultaneously achieve a normally-off mode of HFET and an improvement in Imax, and further achieve an improvement in gm and a reduction in gate leakage current. In order to keep a thin barrier layer 13 on an operation layer 12 of a substrate 11 directly under a gate electrode for mostly contributing to achieve the normally-off mode and also implement the high Imax, it is configured in such a way that a thickness of the barrier layer 13 can be increased by the semiconductor layer 17 between gate and source regions and between gate and drain regions. It is therefore possible to achieve the normally-off mode and an improvement in Imax as compared with an FET in which a thickness of the barrier layer is designed so as to be uniform. An insulating film 18 with a dielectric constant higher than that of the barrier layer is further inserted between a gate electrode 16 and the barrier layers 13, so that an improvement in gm and a reduction in gate leakage current can be achieved.
    • 本发明的一个目的是提供一种可以同时实现HFET的常闭模式和改进Imax的半导体器件,并进一步实现gm的改善和栅极漏电流的减小。 为了在栅电极正下方的基板11的操作层12上保持薄的阻挡层13,主要用于实现常关模式并且还实现了高的Imax,它被配置成使得厚度 可以通过栅极和源极区域之间以及栅极和漏极区域之间的半导体层17来增加阻挡层13。 因此,与设置阻挡层的厚度均匀的FET相比,可以实现常闭模式和Imax的改善。 介电常数高于阻挡层的绝缘膜18进一步插入在栅电极16和阻挡层13之间,从而可以实现gm的改善和栅极漏电流的减小。