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    • 52. 发明申请
    • SEMICONDUCTOR DEVICE
    • 半导体器件
    • US20100001790A1
    • 2010-01-07
    • US12483668
    • 2009-06-12
    • Takayuki HASHIMOTOTakashi HiraoNoboru Akiyama
    • Takayuki HASHIMOTOTakashi HiraoNoboru Akiyama
    • H01L25/00
    • H01L27/0629H01L2924/0002H02M7/003H01L2924/00
    • In a semiconductor device, a high-side driver is arranged in a region closer to a periphery of a semiconductor substrate than a high-side switch, and a low-side driver is arranged in a region closer to the periphery of the semiconductor substrate than the low-side switch. By this means, a path from a positive terminal of an input capacitor to a negative terminal of the input capacitor via the high-side switch and the low-side switch is short, a path from a positive terminal of a drive capacitor to a negative terminal of the drive capacitor via the low-side driver is short, and a path from a positive terminal of a boot strap capacitor to a negative terminal of the boot strap capacitor via the high-side driver is short, and therefore, the parasitic inductance can be reduced, and the conversion efficiency can be improved.
    • 在半导体装置中,高侧驱动器配置在比高侧开关更靠近半导体基板的周围的区域,低边驱动器配置在比半导体基板的周边更靠近的区域, 低端开关。 通过这种方式,经由高侧开关和低侧开关从输入电容器的正极端子到输入电容器的负极端子的路径很短,从驱动电容器的正极端子到负极的路径 通过低侧驱动器的驱动电容器的端子短,通过高侧驱动器从引导电容器的正极端子到引导电容器的负极端子的路径短,因此,寄生电感 可以降低转换效率。
    • 54. 发明申请
    • Drive Circuit and Inverter for Voltage Driving Type Semiconductor Device
    • 用于电压驱动型半导体器件的驱动电路和逆变器
    • US20090033377A1
    • 2009-02-05
    • US12170472
    • 2008-07-10
    • Takayuki HashimotoTakashi HiraoMasaki Shiraishi
    • Takayuki HashimotoTakashi HiraoMasaki Shiraishi
    • H03K3/012
    • H02M3/07H02M1/08H02M7/5387H02M2003/071
    • A drive circuit for driving a semiconductor element is equipped with: a first switch connected to a positive side of a DC power supply; a second switch connected to the other terminal of the first switch and to a negative side of the DC power supply; a third switch connected to the positive side of the DC power supply; a fourth switch connected to the other terminal of the third switch; a fifth switch connected to the other terminal of the fourth switch and to the negative side of the DC power supply; and a capacitor connected to the other terminal of the first switch and to the other terminal of the fourth switch. A gate of the semiconductor element is connected to the other terminal of said third switch; and a source of the semiconductor element is connected to the negative side of the DC power supply.
    • 用于驱动半导体元件的驱动电路配备有:连接到直流电源的正侧的第一开关; 连接到第一开关的另一个端子和直流电源的负极的第二开关; 连接到直流电源的正极的第三开关; 连接到第三开关的另一个端子的第四开关; 连接到第四开关的另一个端子和直流电源的负极的第五开关; 以及电容器,连接到第一开关的另一端子和第四开关的另一端子。 半导体元件的栅极连接到所述第三开关的另一个端子; 并且半导体元件的源极连接到直流电源的负极侧。
    • 55. 发明授权
    • Opening-closing device with limited lifting range
    • 开启装置,起升范围有限
    • US06327457B1
    • 2001-12-04
    • US09549144
    • 2000-04-13
    • Takayuki Hashimoto
    • Takayuki Hashimoto
    • G03G1500
    • G03G15/605E05Y2201/638
    • An opening-closing device is capable of automatically positioning an opened pressing mechanism horizontally in relation to a supporting table. A base member is provided for fixation to a body of an apparatus on which the pressing mechanism is to be used. A supporting member is secured pivotably to the base member and a lifting member is provided to which a rear portion of the pressing mechanism is fixed to a free end of the supporting member with a supporting pin reversibly in a direction in which the lifting member will overlap the supporting member. An elastic member forces the supporting member along with the lifting member in the opening direction of the pressing mechanism while forcing the lifting member in a direction in which the lifting member will overlap the supporting member. The opening-closing device further has a mechanism for limiting to a predetermined range, the range of the lifting member being reversible about the pivoted position relative to the supporting member and an adjusting mechanism abutting a part of the base member or the apparatus body to reverse the lifting member.
    • 开闭装置能够相对于支撑台水平地自动定位打开的按压机构。 提供基座构件用于固定到其上将使用按压机构的装置的主体。 支撑构件可枢转地固定到基部构件,并且提供提升构件,按压机构的后部通过支撑销以可提升构件将重叠的方向可逆地固定到支撑构件的自由端, 支撑构件。 弹性构件沿着按压机构的打开方向将提升构件沿着提升构件推压,同时迫使提升构件沿着提升构件将与支撑构件重叠的方向。 开闭装置还具有用于限制在预定范围的机构,提升构件的范围围绕枢转位置相对于支撑构件是可逆的;以及调节机构,邻接基座构件或装置主体的一部分以反向 提升构件。
    • 56. 发明授权
    • Semiconductor light emitting element with a current diffusing layer
having a changing carrier concentration therein
    • 具有其中载流子浓度变化的电流扩散层的半导体发光元件
    • US5635733A
    • 1997-06-03
    • US601279
    • 1996-02-16
    • Hiroaki OkagawaTakayuki HashimotoKeiji MiyashitaTomoo YamadaKazuyuki Tadatomo
    • Hiroaki OkagawaTakayuki HashimotoKeiji MiyashitaTomoo YamadaKazuyuki Tadatomo
    • H01L33/14H01L33/30H01L33/40H01L33/00
    • H01L33/14
    • In the light emitting element comprising an n-type semiconductor substrate, a lower electrode formed on the lower surface of the substrate, and a light emitting part having a pn junction, which is composed of an InGaAlP compound semiconductor material, a p-type current diffusing layer and an upper electrode which are laminated on the upper surface of the substrate in that order from the substrate side, the improvement wherein a carrier concentration of the current diffusing layer is lower on a light emitting part side thereof than that on an upper electrode side thereof, and at least the upper electrode side of the current diffusing layer is composed of GaP. By employing such structure, diffusion of the dopant to a light emitting part can be suppressed even when the carrier concentration of the upper part of the current diffusing layer is set to be higher, thereby affording a lower resistance of the current diffusing layer as a whole. The GaP being a compound semiconductor without Al, the amount of the dopant necessary for affording the superior effects of suppressing the diffusion of the dopant to the light emitting part can be less. Consequently, the luminous efficiency can be improved as compared with conventional ones, and a light emitting element having a long service life and superior reliability can be obtained.
    • 在包含n型半导体衬底的发光元件中,形成在衬底的下表面上的下电极和由InGaAlP化合物半导体材料构成的具有pn结的发光部分,p型电流 扩散层和上电极,从衬底侧依次层叠在衬底的上表面上,其中电流扩散层的发光部分侧的载流子浓度比上电极的载流子浓度低 并且电流扩散层的至少上电极侧由GaP构成。 通过采用这样的结构,即使将电流扩散层的上部的载流子浓度设定得较高,也能够抑制掺杂剂向发光部的扩散,从而提供整体上的电流扩散层的较低的电阻 。 GaP是没有Al的化合物半导体,可以减少为了提供抑制掺杂剂向发光部的扩散的优异效果所需的掺杂剂的量。 因此,与现有技术相比,能够提高发光效率,能够得到使用寿命长,可靠性优异的发光元件。
    • 60. 发明授权
    • Semiconductor device and power supply using the same
    • 半导体器件和电源使用相同
    • US08125206B2
    • 2012-02-28
    • US12143305
    • 2008-06-20
    • Noboru AkiyamaTakayuki HashimotoTakashi HiraoKoji Tateno
    • Noboru AkiyamaTakayuki HashimotoTakashi HiraoKoji Tateno
    • G05F1/40
    • H02M3/1588Y02B70/1466
    • A power-supply control IC is included in a switching power supply which drives to turn on and off a semiconductor switching device connected to a DC power supply in series to supply a predetermined constant voltage to an external load, and is a semiconductor device including a semiconductor circuit which controls on and off of the semiconductor switching device. When a current flowing through the load is abruptly increased to cause an error voltage to exceed a predetermined first threshold voltage after the end of a PWM on-pulse generated in synchronization with a switching cycle, a second PWM on-pulse is generated within the same switching cycle. Furthermore, in a plurality of switching cycles after the switching cycle in which the second PWM on-pulse is generated, the first threshold voltage for comparison with the error voltage is switched to a second threshold voltage higher than the first threshold voltage.
    • 电源控制IC包括在开关电源中,该开关电源驱动以串联连接到直流电源的半导体开关装置,以向外部负载提供预定的恒定电压,并且是包括 控制半导体开关器件的导通和截止的半导体电路。 当流过负载的电流突然增加以在与开关周期同步产生的PWM导通脉冲结束之后导致误差电压超过预定的第一阈值电压时,在同一时间内产生第二PWM导通脉冲 开关周期。 此外,在产生第二PWM导通脉冲的开关周期之后的多个开关周期中,与误差电压进行比较的第一阈值电压被切换到高于第一阈值电压的第二阈值电压。