专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US08305011B2 Driving circuit for light emitting elements 有权
标题翻译：发光元件的驱动电路
公开(公告)号：US08305011B2
公开(公告)日：2012-11-06
申请号：US12667879
申请日：2008-07-03
申请人： Atsushi Kitagawa , Kunihiro Komiya
发明人： Atsushi Kitagawa , Kunihiro Komiya
IPC分类号： H05B37/02
CPC分类号： H05B33/0866 , H05B33/0827
摘要： Multiple LED terminals are provided to multiple LEDs, respectively. Each of these LED terminals is connected to the anode of the corresponding LED. A booster circuit boosts an input voltage. Multiple constant current sources are provided to the multiple LEDs, respectively. One terminal of each of the constant current sources is connected to the corresponding one of the LEDs via the corresponding one of the LED terminals. Multiple switches are provided to the multiple constant current sources, respectively, each of which selectively outputs a voltage selected from the input voltage and the output voltage of the booster circuit to the corresponding constant current source. A control circuit monitors each of the voltages at the multiple LED terminals, and controls the connection state of each of the switches based upon the corresponding voltage.
摘要翻译：多个LED端子分别提供给多个LED。这些LED端子中的每一个连接到相应LED的阳极。升压电路提高输入电压。多个恒流源分别提供给多个LED。每个恒流源的一个端子经由相应的一个LED端子连接到相应的一个LED。分别向多个恒定电流源提供多个开关，每个恒定电流源选择性地将从升压电路的输入电压和输出电压中选出的电压输出到相应的恒定电流源。控制电路监视多个LED端子处的每个电压，并且基于相应的电压来控制每个开关的连接状态。

2. 发明申请

US20080031023A1 Semiconductor Integrated Circuit Including Charge Pump and Electronic Device Including the Semiconductor Integrated Circuit 失效
标题翻译：包括电荷泵和包括半导体集成电路的电子器件的半导体集成电路
公开(公告)号：US20080031023A1
公开(公告)日：2008-02-07
申请号：US11828466
申请日：2007-07-26
申请人： Atsushi Kitagawa , Hiroshi Sawada
发明人： Atsushi Kitagawa , Hiroshi Sawada
IPC分类号： H02M3/18
CPC分类号： H02M3/07
摘要： A semiconductor integrated circuit is electrically connected to first to fourth capacitors and includes first to eleventh switches. A tenth switch has a first terminal electrically connected to a second terminal of the second capacitor, and a second terminal electrically connected to a first terminal of the third capacitor. An eleventh switch has a first terminal electrically connected to a second terminal of the first capacitor, and a second terminal electrically connected to the first terminal of the third capacitor. A second terminal of the third capacitor is connected to a node at a fixed potential.
摘要翻译：半导体集成电路电连接到第一至第四电容器，并且包括第一至第十一开关。第十开关具有电连接到第二电容器的第二端子的第一端子和电连接到第三电容器的第一端子的第二端子。第十一开关具有电连接到第一电容器的第二端子的第一端子和电连接到第三电容器的第一端子的第二端子。第三电容器的第二端子连接到固定电位的节点。

3. 发明授权

US07218496B2 Overcurrent protection circuit 失效
标题翻译：过流保护电路
公开(公告)号：US07218496B2
公开(公告)日：2007-05-15
申请号：US11181274
申请日：2005-07-14
申请人： Atsushi Kitagawa
发明人： Atsushi Kitagawa
IPC分类号： H02H9/08
CPC分类号： H03K17/0822 , H02H9/02
摘要： The voltage generator circuit includes a regulator, a first sensor circuit, and a second sensor circuit. The first sensor circuit includes a first transistor, a first resistor, and an error amplifier. When V1>Vth, the error amplifier senses an overcurrent condition to provide feedback to the operational amplifier to limit an output current. The second sensor circuit includes a second transistor, a second resistor, and a sensing transistor. When the output current exceeds a sense threshold current, the sensing transistor is turned ON to provide feedback to the operational amplifier 12 to limit the output current. The second sensor circuit has a higher setting of sense threshold current than does the first sensor circuit, while having a higher setting of sensing speed than does the first sensor circuit.
摘要翻译：电压发生器电路包括调节器，第一传感器电路和第二传感器电路。第一传感器电路包括第一晶体管，第一电阻器和误差放大器。当V 1> Vth时，误差放大器检测过电流条件以向运算放大器提供反馈以限制输出电流。第二传感器电路包括第二晶体管，第二电阻器和感测晶体管。当输出电流超过感测阈值电流时，感测晶体管导通，以向运算放大器12提供反馈以限制输出电流。与第一传感器电路相比，第二传感器电路具有比第一传感器电路更高的感测阈值电流设置，同时具有比第一传感器电路更高的感测速度设置。

4. 发明申请

US20050163977A1 Antireflection film, its production method, optical device, and image display 有权
标题翻译：防反射膜，其制造方法，光学装置和图像显示
公开(公告)号：US20050163977A1
公开(公告)日：2005-07-28
申请号：US10507484
申请日：2003-03-12
申请人： Minoru Miyatake , Masahiro Yoshioka , Tomoaki Masuda , Atsushi Kitagawa , Hiroyuki Takao , Kaori Shirouzu
发明人： Minoru Miyatake , Masahiro Yoshioka , Tomoaki Masuda , Atsushi Kitagawa , Hiroyuki Takao , Kaori Shirouzu
IPC分类号： G02B5/30 , B32B7/02 , G02B1/10 , G02B1/11 , G02B1/111 , G02B1/14 , G02B1/18 , G02F1/1335 , B32B3/00
CPC分类号： G02B1/111 , G02B1/11 , Y10T428/24802 , Y10T428/24893 , Y10T428/31645 , Y10T428/31663
摘要： An antireflection layer is formed directly or through an other layer at least on one side of a transparent base film of an antireflection film. The antireflection layer is made of at least two kinds of low refractive index materials satisfying a relationship of refractive index: nd20≦1.49. The antireflection layer is excellent in antireflection characteristics and mar resistance. When the antireflection layer is formed on a hard coat layer having an uneven surface roughened by particles, the antireflection film is excellent in antiglareness.
摘要翻译：在防反射膜的透明基膜的至少一个侧面上直接或者通过另一层形成抗反射层。防反射层由满足折射率的关系的至少两种低折射率材料制成：n

5. 发明授权

US06847419B2 Polarizing plate and liquid crystal display using the same 有权
标题翻译：偏光板和液晶显示器使用相同
公开(公告)号：US06847419B2
公开(公告)日：2005-01-25
申请号：US10071217
申请日：2002-02-08
申请人： Seiichi Kusumoto , Hisashi Mihara , Atsushi Kitagawa , Eiji Hamamoto
发明人： Seiichi Kusumoto , Hisashi Mihara , Atsushi Kitagawa , Eiji Hamamoto
IPC分类号： G02B5/30 , G02F1/1335 , G02F1/1333
CPC分类号： G02B5/3033 , G02F1/133528 , G02F2201/50 , G02F2201/54 , G02F2202/28 , Y10T428/1041 , Y10T428/283
摘要： A polarizing plate and a liquid crystal display using the same are disclosed. The polarizing plate includes a polarizer made of a synthetic resin and protective films. The same protective films are attached to both sides of the polarizer. When a FTIR-ATR method is carried out with respect to the both sides of the protective film and a peak intensity (A) in the wavelength range around 1488 cm−1 of one side, a peak intensity (B) in the wavelength range around 1365 cm−1 of one side, a peak intensity (A′) in the wavelength range around 1488 cm−1 of another side and a peak intensity (B′) in the wavelength range around 1365 cm−1 of another side are measured, and (C) and (C′) are represented by the relationships: (A)/(B)=(C) and (A′)/(B′)=(C′), (C)/(C′)≧1.2 is satisfied. The same sides of the protective films having the (C) and (C′) are adhered to both sides of the polarizer. In the polarizing plates, in accordance with the invention, even at the exposure to heat and humidity, advantageously occurrence of curling (warping) is reproduced.
摘要翻译：公开了一种偏振片和使用其的液晶显示器。偏光板包括由合成树脂制成的偏光片和保护膜。相同的保护膜附着在偏振器的两侧。当相对于保护膜的两面进行FTIR-ATR方法和在一侧的1488cm -1附近的波长范围内的峰值强度（A）时，波长的峰值强度（B）在一侧约1365cm -1的范围内，另一侧的1488cm -1附近的波长范围内的峰强度（A'）和在1365cm -1附近的波长范围内的峰强度（B'），（A）/（B）=（C）和（A'）/（B'）=（C'）的关系表示（C）和（C'），（C）/（C'）> = 1.2。具有（C）和（C'）的保护膜的相同侧粘附到偏振器的两侧。在偏光板中，根据本发明，即使在暴露于热和湿度下，也可以有利地发生卷曲（翘曲）。

6. 发明授权

US07893667B2 PWM power supply apparatus having a controlled duty ratio without causing overall system oscillation 失效
标题翻译：具有受控占空比的PWM电源装置，而不会引起整个系统振荡
公开(公告)号：US07893667B2
公开(公告)日：2011-02-22
申请号：US11996228
申请日：2006-08-02
申请人： Atsushi Kitagawa , Hiroaki Asazu
发明人： Atsushi Kitagawa , Hiroaki Asazu
IPC分类号： G05F1/46
CPC分类号： H02M3/156 , H02M2001/0025 , H02M2001/0032 , Y02B70/16
摘要： A direct-current stabilized power supply apparatus according to the present invention includes offsetting means that keeps a slope voltage (Vslp) shifted from the ground potential to a higher potential by a predetermined offset voltage ΔV so that the lower limit level of the slope voltage (Vslp) is higher than that of an error voltage (Verr). With this configuration, it is possible to provide a direct-current stabilized power supply apparatus that can appropriately control a duty ratio without causing oscillation or the like in the overall system, and also to provide an electrical device incorporating such a power supply apparatus.
摘要翻译：根据本发明的直流稳压电源装置包括偏移装置，其使斜坡电压（Vslp）从接地电位移动到较高电位预定的偏移电压＆Dgr; V，使得斜率的下限电平电压（Vslp）高于误差电压（Verr）。采用这种结构，可以提供一种能够适当地控制占空比而不引起整个系统中的振荡等的直流稳压电源装置，并且还可以提供一种并入这种电源装置的电气装置。

7. 发明申请

US20060050193A1 ELECTRO-OPTICAL DEVICE AND ELECTRONIC APPARATUS 有权
标题翻译：电光设备和电子设备
公开(公告)号：US20060050193A1
公开(公告)日：2006-03-09
申请号：US10677487
申请日：2003-10-03
申请人： Takumi Seki , Atsushi Kitagawa
发明人： Takumi Seki , Atsushi Kitagawa
IPC分类号： G02F1/136
CPC分类号： G02F1/136227 , G02F1/133553 , G02F1/133555 , G02F1/136209
摘要： The invention provides an electro-optical device having a light-shielding layer for preventing light from entering semiconductor elements. In particular, a liquid crystal display device of the present invention includes an electro-optical material between an element substrate having pixel electrodes and an opposing substrate facing the element substrate. The element substrate includes semiconductor elements for driving the pixel electrodes, insulation films covering the semiconductor element, and a reflective plate disposed on the insulation films, the reflective plate having openings. The semiconductor elements adjacent to the element substrate includes a light-shielding layer for shielding the semiconductor element from incident light, the light-shielding layer having openings in substantially the same regions as the openings in the reflective plate.
摘要翻译：本发明提供一种具有防止光进入半导体元件的遮光层的电光装置。特别地，本发明的液晶显示装置在具有像素电极的元件基板和面向元件基板的相对基板之间具有电光材料。元件基板包括用于驱动像素电极的半导体元件，覆盖半导体元件的绝缘膜和设置在绝缘膜上的反射板，反射板具有开口。与元件基板相邻的半导体元件包括用于屏蔽半导体元件与入射光的遮光层，该遮光层在与反射板中的开口基本相同的区域中具有开口。

8. 发明授权

US08704357B2 Semiconductor device and power supply unit utilizing the same 有权
公开(公告)号：US08704357B2
公开(公告)日：2014-04-22
申请号：US13253805
申请日：2011-10-05
申请人： Atsushi Kitagawa
发明人： Atsushi Kitagawa
IPC分类号： H01L23/04
CPC分类号： H02M3/158 , H01L24/14 , H01L2224/13014 , H01L2224/14131 , H01L2924/1305 , H01L2924/13091 , H01L2924/14 , H01L2924/15311 , H02M3/155 , H01L2924/00
摘要： A semiconductor device has pluralities of grid array terminals forming a grid array structure, e.g. a BGA structure, in which the output end of a built-in switch circuit is connected to multiple terminals of the grid array structure, thereby reducing the current that flows through each of the multiple terminals below a permissible level and minimizing the heat due to contact resistances of the multiple terminals in contact with the IC socket of the semiconductor device. Each pair of nearest neighbors of the multiple terminals is interposed by at least one further array terminal. The multiple terminals are all located at the outermost peripheral terminal positions of the grid array structure. Thus, the heat generated in the respective multiple terminals connected to the switch circuit is reduced, thereby minimizing the possibility of hazardous melting of the terminals.

9. 发明授权

US07405549B2 Soft start circuit, power supply unit and electric equipment 有权
标题翻译：软启动电路，电源单元和电气设备
公开(公告)号：US07405549B2
公开(公告)日：2008-07-29
申请号：US11462399
申请日：2006-08-04
申请人： Atsushi Kitagawa
发明人： Atsushi Kitagawa
IPC分类号： G05F1/613 , G05F3/02
CPC分类号： H02M1/36 , Y10S323/901
摘要： A soft start circuit includes a constant current source for generating a constant current, a first current mirror circuit for generating from the constant current a first mirror current, a second current mirror circuit for generating from the constant current a second mirror current smaller than the first mirror current, and a capacitor into which a difference between the first mirror current and the second mirror current is introduced, wherein a divided voltage of a charging voltage thereof is output as a soft start voltage. The soft start circuit provides a gradual soft start voltage.
摘要翻译：软启动电路包括用于产生恒定电流的恒流源，用于从恒定电流产生第一反射镜电流的第一电流镜电路，用于从恒定电流产生小于第一反射镜电流的第二反射镜电流的第二电流镜电路以及电容器，其中引入第一反射镜电流和第二反射镜电流之间的差异，其中输出其充电电压的分压作为软启动电压。软启动电路提供逐渐的软启动电压。

10. 发明授权

US07277264B2 Semiconductor integrated circuit having current detection functionality and power supply unit equipped with the same 失效
标题翻译：具有电流检测功能的半导体集成电路和配备有该检测功能的电源单元
公开(公告)号：US07277264B2
公开(公告)日：2007-10-02
申请号：US11083699
申请日：2005-03-18
申请人： Atsushi Kitagawa
发明人： Atsushi Kitagawa
IPC分类号： H02H9/02
CPC分类号： H02H7/1213 , G01R19/16571
摘要： A semiconductor IC has a current detection resistor and a comparison circuit for comparing the voltage drop across the current detection resistor with a threshold voltage to detect a possibly large magnitude of current passing through the current detection resistor. The semiconductor IC has a current terminal for externally inputting current to the current detection resistor, a highly resistive current-limiting resistor connected between the current detection resistor and one input end of the comparison circuit, and a measurement terminal connected to the node of the input terminal of the comparison circuit and the current limiting resistor. Thus, the magnitude of the current flowing through the measurement resistor is correctly measured without being influenced by the parasitic resistances of the terminals or of the test probe used. The threshold level of detection current is regulated based on the measured level the detection current without flowing therethrough a large amount of current nor implementing any additional device.
摘要翻译：半导体IC具有电流检测电阻器和用于将电流检测电阻器两端的电压降与阈值电压进行比较的比较电路，以检测通过电流检测电阻器的可能的大电流。半导体IC具有用于向电流检测电阻器外部输入电流的电流端子，连接在电流检测电阻器和比较电路的一个输入端之间的高阻抗限流电阻器，以及连接到输入端的节点的测量端子比较电路的端子和限流电阻。因此，正确地测量流过测量电阻器的电流的大小，而不受端子或所使用的测试探针的寄生电阻的影响。检测电流的阈值电平根据测量电平进行调节，检测电流不流过其大量电流，也不实施任何额外的器件。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式