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    • 82. 发明公开
    • 모터 구동 장치 및 이것을 이용한 전기 기기
    • 电机驱动装置和使用该装置的电子装置
    • KR1020070122230A
    • 2007-12-28
    • KR1020077025758
    • 2006-07-11
    • 로무 가부시키가이샤
    • 야나기시마,다이끼
    • H02H7/122H02P6/16
    • H02P29/032
    • chopping signal generation means (151, 153) for generating a chopping signal Sa when drive current of a driver (14) has reached a first threshold value; chopping signal cut-off means (152, 154) for cutting off the chopping signal Sa when the drive current has reached a second threshold value which is greater than the first threshold value; and overcurrent protection means (16) for generating an overcurrent protection signal Se when the drive current has reached a third threshold value which is greater than the first threshold value and its continuation time has reached a predetermined threshold value time. Thus it is possible to simultaneously obtain the constant current chopping function and the overcurrent protection function and to improve its reliability and safety.
    • 用于当驱动器(14)的驱动电流达到第一阈值时产生斩波信号Sa的斩波信号产生装置(151,153); 斩波信号切断装置(152,154),用于当驱动电流达到大于第一阈值的第二阈值时切断斩波信号Sa; 以及用于当驱动电流达到大于第一阈值并且其持续时间已经达到预定阈值时间的第三阈值时产生过电流保护信号Se的过电流保护装置(16)。 因此,可以同时获得恒流斩波功能和过流保护功能,并提高其可靠性和安全性。
    • 83. 发明公开
    • 광 변조장치 및 광 변조 시스템
    • 光学调制器和光学调制系统
    • KR1020070119003A
    • 2007-12-18
    • KR1020077008681
    • 2006-04-07
    • 로무 가부시키가이샤
    • 후지모리요시카즈
    • G02F1/03
    • G02F1/21G02F1/0311G02F1/0316G02F2001/213G02F2201/124G02F2201/305
    • Disclosed is an optical modulator improved in light use efficiency. Specifically disclosed is an optical modulator (10) comprising a light-emitting unit (22), a Fabry-Perot resonator (16), and a control unit (12) for applying a control voltage to the resonator (16). The resonator (16) comprises a light-modulating film (34) whose refractive index changes according to the electric field applied thereto, and comb electrodes (35, 36) for applying an electric field to the light-modulating film (34). The light emitted from the light-emitting unit (22) is incident on the light incident surface at an angle substantially perpendicular to the direction of the electric field applied to the light-modulating film (34) while being tilted from the normal direction of the light incident surface.
    • 公开了一种提高光使用效率的光调制器。 具体公开了一种包括发光单元(22),法布里 - 珀罗谐振器(16)和用于向谐振器(16)施加控制电压的控制单元(12)的光学调制器(10)。 谐振器(16)包括其折射率根据施加到其上的电场而变化的光调制膜(34)和用于向光调制膜(34)施加电场的梳状电极(35,36)。 从发光单元(22)发射的光以与施加到光调制膜(34)的电场方向大致垂直的角度入射在光入射表面上,同时从 光入射面。
    • 87. 发明公开
    • 반도체 발광 소자
    • 半导体发光元件
    • KR1020070104404A
    • 2007-10-25
    • KR1020077018376
    • 2006-02-15
    • 로무 가부시키가이샤
    • 이토노리카즈츠츠미카즈아키니시다토시오소노베마사유키사카이미츠히코야마구치아츠시
    • H01L33/20
    • H01L33/38H01L33/20
    • A nitride semiconductor light emitting element exhibiting excellent reliability in which deterioration of a semiconductor layer is prevented and the semiconductor layer is not broken easily even when a reverse direction voltage is applied or even in long time operation. On the surface of a substrate (1), a semiconductor multilayer portion (6), which is composed of a nitride semiconductor and includes 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 thereon while being connected electrically with a translucent conductive layer (7) and the p-type layer (5), and an n-side electrode (9) is provided while being connected electrically with an n-type layer (3) on the lower layer side of the semiconductor multilayer portion (6). A mesa-like semiconductor multilayer portion (6a) is formed by removing the semiconductor multilayer portion (6) around the chip by etching, and the mesa-like semiconductor multilayer portion (6a) is etched such that a corner part has curved line, not having an angle of 90° or less in the planar shape.
    • 即使在施加反向电压或长时间运转时,也能够防止半导体层劣化,半导体层不容易破坏的显示优异的可靠性的氮化物半导体发光元件。 在基板(1)的表面上,由氮化物半导体构成的包含第一导电型层(p型层)和第二导电型层(n-型层)的半导体层叠部(6) 型层(3))形成,在其上设置p侧电极(8),同时与透光性导电层(7)和p型层(5)电连接,n侧电极 在与半导体多层部分(6)的下层侧的n型层(3)电连接的同时,提供图9所示的结构。 通过蚀刻去除芯片周围的半导体多层部分(6)形成台状半导体多层部分(6a),并且蚀刻台面状半导体多层部分(6a)使得角部分具有曲线,而不是 在平面形状中具有90°或更小的角度。
    • 89. 发明授权
    • 자기기록 재생장치 및 그 드라이브용 반도체 집적회로장치
    • 用于再生磁记录的装置和用于驱动磁记录的半导体集成电路
    • KR100754093B1
    • 2007-08-31
    • KR1020000002935
    • 2000-01-21
    • 로무 가부시키가이샤
    • 이시다다쿠야
    • H01L27/00
    • G11B19/20G11B27/36G11B33/122
    • 반도체 집적회로장치의 각 기능을 테스트모드로 하기 위한 테스트신호를 통상적인 동작시에 사용되는 단자에 입력시키는 것에 의해, 반도체 집적회로장치를 테스트모드로 할 수 있는 자기기록 재생장치 드라이브용 반도체 집적회로장치 및 자기기록 재생장치를 제공하는 것을 목적으로 한다.
      반도체 집적회로장치에 전원을 공급한 후에, 제어회로(2)가 ON으로 되었을 때, 클록 출력단자(6)으로 테스트신호를 입력한다.
      이때, ON/OFF 제어신호가 Low의 상태에 있으므로, 래치(latch)회로(15)의 게이트단자(G)에 low의 신호가 버퍼(buffer)(17)을 통해서 제어부(14)에서 송출되기 때문에, 버퍼(9)를 통해서 입력단자(D)에 송출되는 테스트신호가 출력단자(Q)에서 제어부(14)로 송출된다.
      이와같이, 테스트신호가 제어부(14)로 송출되는 것에 의하여, 테스트모드를 인식시키고, ON/OFF 제어신호를 Hi로 하면, 래치회로(15)의 동작이 정지함과 동시에, 클록을 제어부(14)에서 AND회로(16), 버퍼(8)을 통해서 클록 출력단자(6)으로 송출하여 외부로 출력한다.
    • 90. 发明公开
    • 전원 장치 및 그것을 이용한 발광 장치, 전자 기기
    • 电源装置,使用这种电源装置的发光装置和电子装置
    • KR1020070085518A
    • 2007-08-27
    • KR1020077012089
    • 2005-11-18
    • 로무 가부시키가이샤
    • 야마모토이사오이토오도모유키
    • G05F1/56H02M3/07H05B37/02
    • H02M3/07H05B33/0815Y02B20/346
    • A power supply device which can perform higher efficiency operation is provided by correctly setting a driving voltage of a load circuit. In the power supply device (100) for driving a light emitting diode (300), which is the load circuit, with a constant current, a constant current circuit (22) is provided on a drive path of the load circuit. A charge pump circuit (10), which is a voltage generating circuit, outputs a driving voltage to the light emitting diode (300). A monitoring circuit (30) monitors voltages at both ends of the constant current circuit (22). The monitoring circuit (30) includes a voltage source for generating a threshold voltage which follows voltage fluctuation with which the constant current circuit (22) can stably operate, compares the voltages at the both ends of the constant current circuit with the threshold voltage generated by the voltage source, and outputs the comparison results (Vs) to a control section (24). The control section (24) controls the charge pump circuit (10) based on the output from the monitoring circuit (30).
    • 通过正确设定负载电路的驱动电压,可以提供能够进行更高效率运行的电源装置。 在用于以恒定电流驱动作为负载电路的发光二极管(300)的电源装置(100)中,在负载电路的驱动路径上设置恒流电路(22)。 作为电压产生电路的电荷泵电路(10)向发光二极管(300)输出驱动电压。 监视电路(30)监视恒流电路(22)两端的电压。 监视电路(30)包括用于产生阈值电压的电压源,该阈值电压跟随恒定电流电路(22)稳定工作的电压波动,将恒定电流电路两端的电压与由 电压源,并将比较结果(Vs)输出到控制部分(24)。 控制部(24)基于监视电路(30)的输出来控制电荷泵电路(10)。