公开(公告)号：US06791523B2

公开(公告)日：2004-09-14

申请号：US09910879

申请日：2001-07-24

申请人： Shin Fujita ,  Tokuro Ozawa

发明人： Shin Fujita ,  Tokuro Ozawa

IPC分类号： G09G336

CPC分类号： G09G3/3659 ,  G09G2300/0842 ,  G09G2310/027

摘要： To maintain image quality when a field frequency is dynamically changed. In an image display area AA, control lines 4a are arranged respectively corresponding to scanning lines 3a, and TFTs 50 and 51, a pixel electrode 9a, and a storage capacitor 52 are arranged at each intersection of one of data lines 6a and scanning lines 3a. A control signal SC supplied through the control line 4a controls the TFT 51 for an on and off operation. A timing signal generator circuit 300 activates the control signal SC when a field frequency is not higher than 60 Hz, and deactivates the control signal SC when a field frequency is above 60 Hz. In this way, whether or not to connect the storage capacitor 52 to the pixel electrode 9a is determined.

摘要翻译： 当场频率动态变化时，保持图像质量。 在图像显示区域AA中，分别对应于扫描线3a布置控制线4a，并且在数据线6a和扫描线3a之间的每一个交点处布置TFT 50和51，像素电极9a和存储电容器52 。 通过控制线4a提供的控制信号SC控制TFT51的开关动作。 当场频率不高于60Hz时，定时信号发生器电路300激活控制信号SC，当场频率高于60Hz时，定时信号发生器电路300激活控制信号SC。 以这种方式，确定是否将存储电容器52连接到像素电极9a。

公开(公告)号：US06380920B1

公开(公告)日：2002-04-30

申请号：US09419971

申请日：1999-10-18

申请人： Tokuro Ozawa

发明人： Tokuro Ozawa

IPC分类号： G09G336

CPC分类号： G09G3/3688 ,  G09G2310/027 ,  G09G2310/0283 ,  G09G2310/0286 ,  G09G2310/0294 ,  G09G2310/0297

摘要： A drive circuit for an electro-optical device, which has a plurality of pairs of shift registers for latching and holding signals representing bits of image data, a D/A converter for performing D/A-conversion on image data latched by the shift register n-bits by n-bits, for generating voltages corresponding to 2N gray scales and for supplying the generated voltages to signal lines, and a switch group for selectively supplying image data latched by one of the shift registers of each of the pairs to the D/A converter. This drive circuit is adapted to repeatedly perform an operation of supplying the D/A converter with image data held by one of the shift registers of each of the pairs during image data is latched by the other shift register. Thus, image data can be inputted thereto at a high speed.

摘要翻译： 一种用于电光装置的驱动电路，具有多对移位寄存器，用于锁存和保持表示图象数据的位的信号; D / A转换器，用于对由移位寄存器锁存的图象数据执行D / A转换 n比特，n比特，用于产生对应于2N个灰度级的电压并用于将产生的电压提供给信号线;以及开关组，用于选择性地将由每个对的移位寄存器中的一个锁存的图像数据提供给D / A转换器。 该驱动电路适于在由另一个移位寄存器锁存的图像数据期间重复执行向D / A转换器提供由每对的移位寄存器中的一个保持的图像数据的操作。 因此，可以高速地输入图像数据。

公开(公告)号：US08766946B2

公开(公告)日：2014-07-01

申请号：US12427433

申请日：2009-04-21

申请人： Eiji Kanda ,  Yasushi Tsuchiya ,  Tokuro Ozawa ,  Toshiharu Matsushima

发明人： Eiji Kanda ,  Yasushi Tsuchiya ,  Tokuro Ozawa ,  Toshiharu Matsushima

IPC分类号： G06F3/045

CPC分类号： G06F3/044

摘要： A sensing circuit having a first substrate, a second substrate, a layer of dielectric material, a first electrode, a second electrode and an electrostatic capacitance detection unit is provided. The second substrate faces the first substrate. The dielectric material is held between the first substrate and the second substrate. The first electrode and the second electrode are arranged between the dielectric material and the first substrate. The electrostatic capacitance detection unit is configured to produce a detection signal having an amplitude according to a value of capacitance formed between the first electrode and the second electrode through the dielectric material.

摘要翻译： 提供了具有第一基板，第二基板，介电材料层，第一电极，第二电极和静电电容检测单元的感测电路。 第二基板面向第一基板。 电介质材料保持在第一基板和第二基板之间。 第一电极和第二电极布置在电介质材料和第一衬底之间。 静电电容检测单元被配置为产生具有根据通过介电材料形成在第一电极和第二电极之间的电容值的振幅的检测信号。

公开(公告)号：US08587513B2

公开(公告)日：2013-11-19

申请号：US13115606

申请日：2011-05-25

申请人： Tokuro Ozawa

发明人： Tokuro Ozawa

IPC分类号： G09G3/34

CPC分类号： G09G3/344 ,  G09G3/2014 ,  G09G2300/0809 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/0262 ,  G09G2310/063

摘要： An electro-optical device includes a pixel circuit, and a driving circuit. The pixel circuit includes a driving transistor, an electro-optical element, a first capacitive element, a first switch, and a second switch. The driving circuit varies a potential at a control terminal during a first period, sets the potential at the control terminal to a compensation initial value during a second period, varies a driving potential from a first potential to a second potential such that the driving transistor is turned on during a third period, supplies a grayscale potential corresponding to a designated grayscale to the signal line and controls the second switch to be turned on during a fourth period, and varies a voltage between the control terminal and a first terminal with the passage of time during a fifth period.

摘要翻译： 电光装置包括像素电路和驱动电路。 像素电路包括驱动晶体管，电光元件，第一电容元件，第一开关和第二开关。 驱动电路在第一时段期间改变控制端的电位，在第二时段期间将控制端的电位设置为补偿初始值，将驱动电位从第一电位改变到第二电位，使驱动晶体管为 在第三时段期间接通，向信号线提供对应于指定灰度级的灰度级电位，并且在第四时段期间控制第二开关导通，并且随着通过而改变控制端子与第一端子之间的电压 时间在第五个时期。

公开(公告)号：US08564531B2

公开(公告)日：2013-10-22

申请号：US13115443

申请日：2011-05-25

申请人： Tokuro Ozawa

发明人： Tokuro Ozawa

IPC分类号： G09G3/34

CPC分类号： G09G3/344 ,  G09G2300/0809 ,  G09G2320/0233

摘要： An electronic apparatus includes an electronic circuit including a driving transistor, an additional capacitive element and a first switch for controlling a connection between a circuit point and a control terminal and a driving circuit which controls the first switch to an off state and changes the potential of the control terminal such that the driving transistor transitions to an on state in a first period, controls the first switch to the on state so as to set the potential of the control terminal to an initial compensation value, in a second period, and controls the first switch to the on state and changes the driving potential from the first potential to the second potential such that the driving transistor transitions to the on state, in a third period.

摘要翻译： 电子设备包括电子电路，其包括驱动晶体管，附加电容元件和用于控制电路点和控制端子之间的连接的第一开关以及控制第一开关截止状态的驱动电路，并且改变电位 所述控制端子使得所述驱动晶体管在第一周期内转变到导通状态，将所述第一开关控制为导通状态，以在第二时段内将所述控制端子的电位设置为初始补偿值，并且控制所述控制端子 首先切换到接通状态，并且将驱动电位从第一电位改变到第二电位，使得驱动晶体管在第三时间段内转换到接通状态。

公开(公告)号：US08188943B2

公开(公告)日：2012-05-29

申请号：US12219511

申请日：2008-07-23

申请人： Toshiyuki Kasai ,  Yoichi Imamura ,  Tokuro Ozawa

发明人： Toshiyuki Kasai ,  Yoichi Imamura ,  Tokuro Ozawa

IPC分类号： G09G3/30

CPC分类号： G09G3/325 ,  G09G2300/043 ,  G09G2300/0809 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/0254 ,  G09G2310/0256 ,  G09G2320/043 ,  G09G2330/021

摘要： The invention provides an electro-optical apparatus that can prevent a shift in a threshold voltage of an amorphous silicon transistor while driving an organic EL device in a pixel circuit including the amorphous silicon transistor. A characteristic-adjustment circuit can be provided, which has a function of returning a shift in the threshold voltage of the amorphous silicon transistor included in the pixel circuit to the original state.

公开(公告)号：US07649515B2

公开(公告)日：2010-01-19

申请号：US11092580

申请日：2005-03-29

申请人： Tokuro Ozawa ,  Toshiyuki Kasai ,  Eiji Kanda ,  Ryoichi Nozawa

发明人： Tokuro Ozawa ,  Toshiyuki Kasai ,  Eiji Kanda ,  Ryoichi Nozawa

IPC分类号： G09G3/32 ,  G09G3/30

CPC分类号： G09G3/3233 ,  G09G2300/0417 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/0251 ,  G09G2320/0242 ,  G09G2320/043

摘要： To reduce the time for writing a voltage onto a gate of a driving transistor. In an initialization period, a node B is fixed to an initial voltage VINI, transistors are turned on, and a current flows into an OLED element, such that a voltage according to the current is held at the node A. Thereafter, the transistors are sequentially turned off, such that a threshold voltage of a driving transistor is held at the node A. In a writing period, a transistor is turned on and a data signal X-j is supplied, such that a voltage of the node B varies by the amount according to the current flowing into the OLED element. The voltage of the node A varies from the threshold voltage by the amount which is obtained by dividing the voltage variation by a capacitance ratio. In a light-emitting period, the transistor is turned on, such that a current according to the voltage of the node A flows into the OLED element.

摘要翻译： 以减少在驱动晶体管的栅极上写入电压的时间。 在初始化期间，将节点B固定为初始电压VINI，晶体管导通，电流流入OLED元件，使得根据电流的电压保持在节点A。此后，晶体管为 顺序地关闭，使得驱动晶体管的阈值电压保持在节点A处。在写入周期中，晶体管导通，并且提供数据信号Xj，使得节点B的电压变化量 根据电流流入OLED元件。 节点A的电压从阈值电压变化通过将电压变化除以电容比而获得的量。 在发光周期中，晶体管导通，使得根据节点A的电压的电流流入OLED元件。

公开(公告)号：US07592983B2

公开(公告)日：2009-09-22

申请号：US11243427

申请日：2005-10-05

申请人： Tokuro Ozawa ,  Ryoichi Nozawa

发明人： Tokuro Ozawa ,  Ryoichi Nozawa

IPC分类号： G09G3/30 ,  G09G5/00 ,  G09G3/10

CPC分类号： G09G3/3233 ,  G09G3/2025 ,  G09G3/2081 ,  G09G3/22 ,  G09G3/3291 ,  G09G2300/0852 ,  G09G2300/0866 ,  G09G2300/0876

摘要： An electro-optical device includes a plurality of pixel circuits that are disposed to correspond to intersections of a plurality of scanning lines and a plurality of data lines, a scanning line driving circuit that sequentially selects the plurality of scanning lines to apply a selection voltage to the selected scanning line, a data line driving circuit that applies any one of an on voltage and an off voltage to the plurality of data lines in accordance with gray-scale levels of pixel circuits corresponding to intersections of the data lines and the selected scanning line by the scanning line driving circuit, and a signal supply circuit that supplies a driving signal, of which the level periodically changes, to a signal supply line. Each of the pixel circuits has a first transistor in which, when the on voltage is applied to a gate electrode, a first terminal is connected to a second terminal, an electro-optical element that is connected to the first terminal of the first transistor, a first capacitor one end of which is connected to the second terminal of the first transistor and simultaneously the other end of which is connected to the signal supply line, a second capacitor one end of which is connected to the gate electrode of the first transistor, and a second transistor in which, when the selection voltage is applied to a gate electrode connected to a corresponding scanning line, a first terminal connected to a corresponding data line is connected to a second terminal connected to one end of the second capacitor.

摘要翻译： 电光装置包括多个像素电路，其被配置为对应于多条扫描线和多条数据线的交点;扫描线驱动电路，顺序地选择多条扫描线以将选择电压施加到 所选择的扫描线，数据线驱动电路，其根据与数据线和所选择的扫描线的交点对应的像素电路的灰度级，将多个数据线中的任一个施加导通电压和截止电压 通过扫描线驱动电路和将电平周期性变化的驱动信号提供给信号供给线的信号供给电路。 每个像素电路具有第一晶体管，其中当将导通电压施加到栅电极时，第一端子连接到第二端子，连接到第一晶体管的第一端子的电光元件， 第一电容器，其一端连接到第一晶体管的第二端子，同时其另一端连接到信号供给线;第二电容器，其一端连接到第一晶体管的栅电极， 以及第二晶体管，其中当选择电压施加到连接到相应扫描线的栅电极时，连接到相应数据线的第一端连接到连接到第二电容器的一端的第二端。

公开(公告)号：US07342563B2

公开(公告)日：2008-03-11

申请号：US10166281

申请日：2002-06-11

申请人： Tsukasa Eguchi ,  Shinsuke Fujikawa ,  Tokuro Ozawa

发明人： Tsukasa Eguchi ,  Shinsuke Fujikawa ,  Tokuro Ozawa

IPC分类号： G09G3/36

CPC分类号： G02F1/1345 ,  G02F1/1309 ,  G02F1/13452

摘要： The present invention provides a systems and methods to perform an electrical test on a substrate assembly used as a TFT array substrate of a liquid-crystal device without detaching a mounted external IC. The substrate assembly can include a substrate, a peripheral circuit embedded in the substrate, a first wiring arranged on the substrate, and an external IC, mounted on the substrate, and having a first terminal connected to an interconnection portion arranged on the first wiring. The substrate assembly can further include a second wiring which extends from the interconnection portion in such a manner that the second wiring is routed in a portion of the substrate facing the integrated circuit, and a first external circuit connection terminal arranged on the second wiring in a portion of the substrate not facing the integrated circuit. The external IC is thus tested through the external circuit connection terminal.

摘要翻译： 本发明提供了一种用于在用作液晶装置的TFT阵列基板的基板组件上执行电测试而不拆卸安装的外部IC的系统和方法。 基板组件可以包括基板，嵌入在基板中的外围电路，布置在基板上的第一布线和安装在基板上的外部IC，并且具有连接到布置在第一布线上的互连部分的第一端子。 基板组件还可以包括从布线部分延伸的第二布线，使得第二布线在面向集成电路的基板的一部分中布线，以及布置在第二布线上的第一外部电路连接端子 衬底的不面向集成电路的部分。 外部IC通过外部电路连接端子进行测试。

公开(公告)号：US07274345B2

公开(公告)日：2007-09-25

申请号：US10844485

申请日：2004-05-13

申请人： Yoichi Imamura ,  Toshiyuki Kasai ,  Tokuro Ozawa

发明人： Yoichi Imamura ,  Toshiyuki Kasai ,  Tokuro Ozawa

IPC分类号： G09G3/30

CPC分类号： G09G3/3241 ,  G09G3/3233 ,  G09G2300/0417 ,  G09G2300/043 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0852 ,  G09G2300/0861 ,  G09G2310/0251 ,  G09G2310/0254 ,  G09G2310/0256 ,  G09G2320/0261 ,  G09G2320/043

摘要： The invention provides an electro-optical device having circuits for driving electro-optical elements, such as organic EL elements, and a driving device, which can employ driving elements having low driving ability, such as α-TFTs. By providing a charge storage capacitor between the source electrode and the gate electrode of a driving transistor which is between power sources, the electro-optical device can allow the driving transistor to control a driving current, even when an electro-optical element is connected to the source side of the driving transistor. In addition, driving data can be stored in the charge storage capacitor by applying a predetermined voltage to the source electrode of the driving transistor.