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101. 发明授权

US07012578B2 Light emission control device, backlight device, liquid crystal display apparatus, liquid crystal monitor and liquid crystal television 失效
公开(公告)号：US07012578B2
公开(公告)日：2006-03-14
申请号：US10454975
申请日：2003-06-05
申请人： Hiroshi Nakatsuka , Katsu Takeda
发明人： Hiroshi Nakatsuka , Katsu Takeda
IPC分类号： G09G3/18
CPC分类号： H05B41/3927 , H05B41/2827 , H05B41/2828
摘要： The present invention provides a light emission control device that can drive a plurality of cold cathode fluorescent tubes independently only by connecting a plurality of piezoelectric transformers to only one piezoelectric inverter circuit. A first phase control portion that outputs a signal for changing a phase of the third and the fourth driving control signals with respect to a phase of the first and the second driving control signals to the second driving portion, and a second phase control portion that outputs a signal for changing a phase of the fifth and the sixth driving control signals with respect to a phase of the first and the second driving control signals to the third driving portion are provided in the piezoelectric inverter circuit. Thus, the phase difference of the driving control signals is controlled, so that the output powers to the plurality of cold cathode fluorescent tubes are controlled.

102. 发明申请

US20060038466A1 Piezoelectric transformer, piezoelectric transformer unit, inverter circuit, light emission control device, and liquid crystal display device 审中-公开
公开(公告)号：US20060038466A1
公开(公告)日：2006-02-23
申请号：US11249640
申请日：2005-10-13
申请人： Hiroshi Nakatsuka , Katsu Takeda , Katsunori Moritoki , Hiroshi Fukushima , Yusuke Adachi
发明人： Hiroshi Nakatsuka , Katsu Takeda , Katsunori Moritoki , Hiroshi Fukushima , Yusuke Adachi
IPC分类号： H01L41/107
CPC分类号： H05B41/2822 , H01L41/107
摘要： A low loss, small scale piezoelectric transformer, suited for a cold cathode tube load, and having a high effective coupling factor, is provided using a piezoelectric plate having a single polarization direction. Controlling the dimensions of the third electrode portion 15a constituting the high impedance portion makes it possible easily to adjust the capacitance of the electrostatic capacitor formed between the first electrode portion 12 and the third electrode portion in accordance with the load. Also, the second electrode portion 13 and the fourth electrode portion 15b constituting the low impedance portion are substantially equal in area and the third electrode portion and the fourth electrode portion are formed in one piece, so that energy propagation efficiency can be increased. Consequently, the effective coupling factor resulting from the electrode structure and the vibration mode can be kept high even if the capacitance is changed freely, and thus high element efficiency and a small amount of generated heat can be maintained and stress can be decreased.

103. 发明申请

US20050285478A1 Driving circuit for piezoelectric transformer, cold-cathode tube light-emitting apparatus, liquid crystal panel and device with built-in liquid crystal panel 失效
标题翻译：压电变压器驱动电路，冷阴极管发光装置，液晶面板及内置液晶面板的装置
公开(公告)号：US20050285478A1
公开(公告)日：2005-12-29
申请号：US11217004
申请日：2005-08-31
申请人： Katsu Takeda , Hiroshi Nakatsuka , Katsunori Moritoki
发明人： Katsu Takeda , Hiroshi Nakatsuka , Katsunori Moritoki
IPC分类号： H01L41/04 , H05B41/282 , H05B41/285 , H05B41/392 , H01L41/107
CPC分类号： H05B41/2822 , H01L41/044 , H05B41/2855 , H05B41/392
摘要： A driving circuit for a piezoelectric transformer is provided, which ensures lighting of all the cold-cathode tubes connected to the piezoelectric transformer, and reduces the difference in brightness between the cathode tubes during steady lighting, thereby enhancing reliability and performance. A plurality of cold-cathode tubes connected to a secondary side of the piezoelectric transformer, and a cold-cathode tube output detector circuit connected in series to a plurality of cold-cathode tubes, for detecting an output state of the respective cold-cathode tubes are provided, and the driving of the piezoelectric transformer is controlled based on a detection signal from the cold-cathode tube output detector circuit. Because of this, the piezoelectric transformer performs the same operation as that with respect to one cold-cathode tube.
摘要翻译：提供一种用于压电变压器的驱动电路，其确保连接到压电变压器的所有冷阴极管的照明，并且在稳定点亮期间减少阴极管之间的亮度差异，从而增强可靠性和性能。连接到压电变压器的次级侧的多个冷阴极管和与多个冷阴极管串联连接的冷阴极管输出检测器电路，用于检测各个冷阴极管的输出状态并且基于来自冷阴极管输出检测器电路的检测信号来控制压电变压器的驱动。因此，压电变压器与一个冷阴极管执行相同的操作。

104. 发明授权

US06794796B2 Piezoelectric transformer, piezoelectric transformer drive circuit, piezoelectric transformer drive method and cold cathode tube drive apparatus using piezoelectric transformer 失效
标题翻译：压电变压器，压电变压器驱动电路，压电变压器驱动方法和使用压电变压器的冷阴极管驱动装置
公开(公告)号：US06794796B2
公开(公告)日：2004-09-21
申请号：US10338754
申请日：2003-01-09
申请人： Hiroshi Nakatsuka , Katsunori Moritoki , Toshiyuki Asahi , Kojiro Okuyama , Osamu Kawasaki
发明人： Hiroshi Nakatsuka , Katsunori Moritoki , Toshiyuki Asahi , Kojiro Okuyama , Osamu Kawasaki
IPC分类号： H01L4108
CPC分类号： H01L41/107 , H01L41/044 , H05B41/2822 , H05B41/2855 , H05B41/3925
摘要： The piezoelectric transformer of the present invention has a piezoelectric element 109 mainly formed of a piezoelectric material, primary electrodes 101U and 101D which are formed on the piezoelectric element 109 and to which a voltage is applied, a secondary electrode 102 which is formed on the piezoelectric element 109 and from which a voltage higher than the voltage applied to the primary electrode is output, and a sensor electrode 103 which is formed on the piezoelectric element 109 and from which a voltage lower than the output voltage of the secondary electrode is output.
摘要翻译：本发明的压电变压器具有主要由压电材料形成的压电元件109，形成在压电元件109上并施加有电压的初级电极101U和101D，形成在压电元件上的二次电极102 输出比施加到初级电极的电压高的电压，并且形成在压电元件109上并且从其输出低于次级电极的输出电压的电压的传感器电极103。

105. 发明授权

US06737816B2 Piezoelectric transformer, piezoelectric transformer drive circuit, piezoelectric transformer drive method and cold cathode tube drive apparatus using piezoelectric transformer 失效
公开(公告)号：US06737816B2
公开(公告)日：2004-05-18
申请号：US09852621
申请日：2001-05-11
申请人： Hiroshi Nakatsuka , Katsunori Moritoki , Toshiyuki Asahi , Kojiro Okuyama , Osamu Kawasaki
发明人： Hiroshi Nakatsuka , Katsunori Moritoki , Toshiyuki Asahi , Kojiro Okuyama , Osamu Kawasaki
IPC分类号： G05F100
CPC分类号： H01L41/107 , H01L41/044 , H05B41/2822 , H05B41/2855 , H05B41/3925
摘要： The piezoelectric transformer of the present invention has a piezoelectric element 109 mainly formed of a piezoelectric material, primary electrodes 101U and 101D which are formed on the piezoelectric element 109 and to which a voltage is applied, a secondary electrode 102 which is formed on the piezoelectric element 109 and from which a voltage higher than the voltage applied to the primary electrode is output, and a sensor electrode 103 which is formed on the piezoelectric element 109 and from which a voltage lower than the output voltage of the secondary electrode is output.

106. 发明授权

US06720705B2 Method of driving a piezoelectric transformer and power source apparatus using the same 失效
标题翻译：驱动压电变压器的方法及使用其的电源装置
公开(公告)号：US06720705B2
公开(公告)日：2004-04-13
申请号：US09930184
申请日：2001-08-16
申请人： Hiroshi Nakatsuka , Takeshi Yamaguchi , Katsu Takeda , Katsunori Moritoki , Kojiro Okuyama
发明人： Hiroshi Nakatsuka , Takeshi Yamaguchi , Katsu Takeda , Katsunori Moritoki , Kojiro Okuyama
IPC分类号： H01L4106
CPC分类号： H01L41/044 , H01L41/107 , H05B41/2822
摘要： The invention provides a method of driving a piezoelectric transformer and a power source apparatus using the same. For a circuit for driving a piezoelectric transformer which steps up a voltage input from a primary electrode by a piezoelectric effect to output the stepped up voltage from a secondary electrode, the gradient (linear differential value) of a step-up ratio at the piezoelectric transformer is detected, and the detected gradient is used to control the driving frequency for the piezoelectric transformer so that the driving frequency approaches to the resonant frequency of the piezoelectric transformer.
摘要翻译：本发明提供驱动压电变压器的方法和使用其的电源装置。对于用于驱动压电变压器的电路，其通过压电效应升高从初级电极输入的电压，以从次级电极输出升压电压，压电变压器的升压比的梯度（线性微分值）并且使用检测到的梯度来控制压电变压器的驱动频率，使得驱动频率接近压电变压器的谐振频率。

107. 发明授权

US06509671B2 Driving method and driving circuit for piezoelectric transformer, cold cathode tube emission device, liquid crystal panel and liquid crystal panel built-in apparatus 失效
标题翻译：压电变压器，冷阴极管发射装置，液晶面板和液晶面板内置装置的驱动方法和驱动电路
公开(公告)号：US06509671B2
公开(公告)日：2003-01-21
申请号：US09870979
申请日：2001-05-31
申请人： Katsu Takeda , Hiroshi Nakatsuka , Katsunori Moritoki , Takeshi Yamaguchi
发明人： Katsu Takeda , Hiroshi Nakatsuka , Katsunori Moritoki , Takeshi Yamaguchi
IPC分类号： H01L4108
CPC分类号： H05B41/2822 , H01L41/044
摘要： A driving method and a driving circuit for a piezoelectric transformer are capable of driving the piezoelectric transformer with high driving efficiency independently of an impedance change of a load such as a cold cathode tube by corresponding to the characteristic variance of the piezoelectric transformer, thereby also suppressing mechanical damage to be imposed on the piezoelectric transformer itself even if the load changes abruptly. The piezoelectric transformer is driven with a predetermined first frequency, and a power supply for a load connected to the secondary side of the piezoelectric transformer is started, and when an impedance of a load changes and reaches a predetermined impedance during the power supply, the driving frequency of the piezoelectric transformer is changed without a sweep from the first frequency to a predetermined second frequency. Furthermore, the second frequency is determined by detecting characteristics of the piezoelectric transformer before supplying the load steadily with electric power.
摘要翻译：用于压电变压器的驱动方法和驱动电路能够独立于诸如冷阴极管的负载的阻抗变化而驱动具有高驱动效率的压电变压器，与压电变压器的特性变化相对应，从而也抑制即使负载突然变化，也会对压电变压器本身施加机械损伤。压电变压器以预定的第一频率驱动，并且开始连接到压电变压器的次级侧的负载的电源，并且当负载的阻抗在电源期间变化并达到预定的阻抗时，驱动压电变压器的频率在没有从第一频率到预定的第二频率的扫描的情况下改变。此外，通过在稳定地供给电力之前检测压电变压器的特性来确定第二频率。

108. 外观设计

USD363732S Electronic calculator 失效
公开(公告)号：USD363732S
公开(公告)日：1995-10-31
申请号：US19878
申请日：1994-03-11
申请人： Toru Suzuki , Hiroshi Nakatsuka
设计人： Toru Suzuki , Hiroshi Nakatsuka

109. 外观设计

USD345990S Electronic keyboard musical instrument 失效
公开(公告)号：USD345990S
公开(公告)日：1994-04-12
申请号：US921489
申请日：1992-07-28
申请人： Hiroshi Nakatsuka
设计人： Hiroshi Nakatsuka

110. 外观设计

USD325201S Portable television set 失效
公开(公告)号：USD325201S
公开(公告)日：1992-04-07
申请号：US477207
申请日：1990-02-08
申请人： Hiroshi Nakatsuka
设计人： Hiroshi Nakatsuka

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