公开(公告)号：US20090322256A1

公开(公告)日：2009-12-31

申请号：US12485142

申请日：2009-06-16

申请人： Somei Kawasaki

发明人： Somei Kawasaki

IPC分类号： H05B37/02

CPC分类号： G09G3/3233 ,  G09G2300/0819 ,  G09G2300/0852 ,  G09G2300/0861 ,  G09G2320/043 ,  G09G2320/045

摘要： Provided is a drive circuit for a light emitting device, which compensates for a decrease in luminance of the light emitting device and reduces a burn-in phenomenon. The drive circuit includes: a first capacitor connected to a gate of a drive transistor; and a second capacitor formed between the first capacitor on a side to which the gate of the drive transistor is not connected, and one end of a light emitting device. The drive circuit corrects an amount of charge of the first capacitor according to a change in potential of the node when the light emitting device starts illumination, and then, causes the light emitting device to illuminate according to the corrected amount of charge.

摘要翻译： 提供了一种用于发光器件的驱动电路，其补偿了发光器件的亮度的降低并且减少了老化现象。 驱动电路包括：连接到驱动晶体管的栅极的第一电容器; 以及形成在驱动晶体管的栅极未连接的一侧的第一电容器与发光器件的一端之间的第二电容器。 当发光装置开始照明时，驱动电路根据节点的电位变化来校正第一电容器的电荷量，然后根据校正的电荷量使发光装置点亮。

公开(公告)号：US20070229412A1

公开(公告)日：2007-10-04

申请号：US11689836

申请日：2007-03-22

申请人： Somei Kawasaki ,  Tatsuhito Goden

发明人： Somei Kawasaki ,  Tatsuhito Goden

IPC分类号： G09G3/30

CPC分类号： G09G3/325 ,  G09G3/006 ,  G09G2300/0465 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2320/0219 ,  G09G2320/029 ,  G09G2330/10

摘要： A display device includes a driving transistor for supplying driving current to a display element; a first switch connecting the driving transistor to a corresponding data line; a second switch selectively connecting a control electrode of the driving transistor to one of two main electrodes of the driving transistor; and a third switch connecting the driving transistor to the display element in one pixel. The first switch is controlled by a first control line. The second and third switches each include two switching elements connected in series controlled by the first control line and a second control line, respectively. Four functions of writing of data in the pixel, light emission of the display element by supplying current, non-light emission of the display element, and examination of the pixel operation can be switched using the two control lines.

摘要翻译： 显示装置包括用于向显示元件提供驱动电流的驱动晶体管; 将所述驱动晶体管连接到对应的数据线的第一开关; 选择性地将驱动晶体管的控制电极连接到驱动晶体管的两个主电极之一的第二开关; 以及在一个像素中将驱动晶体管连接到显示元件的第三开关。 第一开关由第一控制线控制。 第二和第三开关各自包括分别由第一控制线和第二控制线串联连接的两个开关元件。 可以使用两条控制线来切换在像素中写入数据的四个功能，通过提供电流，显示元件的非发光和像素操作的检查来显示显示元件的发光。

公开(公告)号：US06909410B2

公开(公告)日：2005-06-21

申请号：US10228091

申请日：2002-08-27

申请人： Somei Kawasaki ,  Masanobu Oomura

发明人： Somei Kawasaki ,  Masanobu Oomura

IPC分类号： H01L51/50 ,  G09G3/20 ,  G09G3/30 ,  G09G3/32

CPC分类号： G09G3/325 ,  G09G3/3291 ,  G09G2300/0809 ,  G09G2300/0861 ,  G09G2310/06 ,  G09G2330/021

摘要： A driving circuit for a light-emitting element, in which it is possible to exactly control a current flown in the light-emitting element, and perform a stable operation while reducing a power-supply voltage as low as possible, is provided. The driving circuit includes a current supply circuit and a driving control circuit in which, based on a current flown from a supply transistor for supplying a current for driving the light-emitting element, and information relating to a source-drain voltage of the supply transistor, it is possible to perform control so that the current approaches a desired setting current value, and the source-drain voltage of the supply transistor has the same value when setting the voltage of the gate-terminal and when driving the light-emitting element.

摘要翻译： 提供了一种用于发光元件的驱动电路，其中可以精确地控制在发光元件中流动的电流，并且在尽可能低地降低电源电压的同时执行稳定的操作。 驱动电路包括电流供给电路和驱动控制电路，其中，基于从供给用于驱动发光元件的电流的供给晶体管流过的电流以及与供给晶体管的源极 - 漏极电压有关的信息 ，可以进行控制，使得电流接近期望的设定电流值，并且当设置栅极端子的电压和驱动发光元件时，电源晶体管的源极 - 漏极电压具有相同的值。

公开(公告)号：US06259466B1

公开(公告)日：2001-07-10

申请号：US09253511

申请日：1999-02-22

申请人： Masanobu Oomura ,  Somei Kawasaki

发明人： Masanobu Oomura ,  Somei Kawasaki

IPC分类号： B41J2435

CPC分类号： B41J2/471 ,  G06K15/1214

摘要： An image formation apparatus stably controls a drive current of a laser diode irrespective of change in density. In the apparatus, a current restriction circuit restricts a current ILD according to the output light quantity. If the current ILD increases and thus approaches to the value of a reference current IPO, the circuit outputs the current restricted to be the certain value substantially equal to the current IPO. Then, current buffers and, a current subtraction circuit, a switching circuit and a current addition circuit cooperatively supply the function current obtained from the input and output currents of the circuit to the cathode of the laser diode.

摘要翻译： 图像形成装置稳定地控制激光二极管的驱动电流，而与密度的变化无关。 在该装置中，电流限制电路根据输出光量限制电流ILD。 如果当前ILD增加并因此接近参考电流IPO的值，则电路将限制的电流输出为基本上等于当前IPO的特定值。 然后，电流缓冲器，电流减法电路，开关电路和电流相加电路将从电路的输入和输出电流获得的功能电流协作地提供给激光二极管的阴极。

公开(公告)号：US5289502A

公开(公告)日：1994-02-22

申请号：US785278

申请日：1991-10-30

申请人： Somei Kawasaki

发明人： Somei Kawasaki

IPC分类号： G11B20/06 ,  G11B20/10 ,  H03C3/02 ,  H03C3/08 ,  H03K3/011 ,  H03K3/017 ,  H03K3/0231 ,  H03K3/282 ,  H03K7/06 ,  H03C3/00 ,  H04L27/12

CPC分类号： H03K7/06 ,  G11B20/06 ,  G11B20/10 ,  H03C3/02 ,  H03C3/08 ,  H03K3/011 ,  H03K3/017 ,  H03K3/0231 ,  H03K3/2821

摘要： A signal processing device for processing an information signal, comprises a frequency modulator arranged to receive the information signal, to frequency-modulate the received information signal and to output a frequency-modulated information signal, a feedback signal generator arranged to receive the frequency-modulated information signal output from the frequency modulator means and to generate a feedback signal therefrom at a phase which is variable to be either in-phase or out-of-phase relative to the received frequency-modulated information signal in accordance with a duty in a high-level period of the received frequency-modulated information signal and at an amplitude which is variable within a range from a zero level to the same level as the received frequency-modulated information signal, and addition circuitry arranged to add the feedback signal output from the feedback signal generator to the information signal received by the frequency modulator.

摘要翻译： 一种用于处理信息信号的信号处理装置，包括频率调制器，被配置为接收信息信号，对所接收的信息信号进行频率调制并输出调频信息信号，反馈信号发生器被布置成接收频率调制信号 从频率调制器装置输出的信号信号并且以相对于接收的调频信息信号可变为同相或异相的相位产生反馈信号，该相位根据高电平的占空比 接收的调频信息信号的低频周期，以及在从零电平到与所接收的调频信息信号的相同电平的范围内可变的幅度，以及相加电路，被配置为将从 反馈信号发生器由信号信号接收的频率调制器。

公开(公告)号：US4862250A

公开(公告)日：1989-08-29

申请号：US303974

申请日：1989-01-30

申请人： Masahiro Takei ,  Tsuguhide Sakata ,  Tomishige Taguchi ,  Somei Kawasaki

发明人： Masahiro Takei ,  Tsuguhide Sakata ,  Tomishige Taguchi ,  Somei Kawasaki

IPC分类号： H04N7/08 ,  H04N1/333 ,  H04N1/46 ,  H04N7/00 ,  H04N7/081 ,  H04N11/00 ,  H04N11/24

CPC分类号： H04N1/33315

摘要： Disclosed is a transmitting and receiving system including a picture transmitting apparatus for transmitting still picture signal information from the transmitting side to the receiving side, in which before the transmission of the still picture information, mode information representing a combination of transmitted color information is added, and a receiving apparatus capable of properly controlling a receiving operation according to the mode information.

摘要翻译： 公开了一种发送和接收系统，包括：图像发送装置，用于从发送侧向接收侧发送静止图像信号信息，其中在发送静止图像信息之前，添加表示所发送的颜色信息的组合的模式信息， 以及能够根据模式信息适当地控制接收操作的接收装置。

公开(公告)号：US08354981B2

公开(公告)日：2013-01-15

申请号：US12164542

申请日：2008-06-30

申请人： Somei Kawasaki ,  Tatsuhito Goden

发明人： Somei Kawasaki ,  Tatsuhito Goden

IPC分类号： G09G3/30

CPC分类号： G09G3/325 ,  G09G2300/0842 ,  G09G2310/0262

摘要： In an active matrix type display apparatus, during a first selection period, a second main conductive terminal of a drive transistor and a display element are isolated, and at the same time, a control terminal of the drive transistor and the second main conductive terminal and a signal line are connected, and the signal line is supplied with a first current capable of conducting the drive transistor. The first current does not correspond to a signal current corresponding to a current injected to the display element. During a second selection period, a connection of the second main conductive terminal of the drive transistor and the signal line is broken, and the signal line is supplied with a second current. The second current corresponds to a signal current corresponding to the current injected to the display element. During a non-selection period, the second main conductive terminal of the drive transistor and the display element are connected, and the drive current of the drive transistor corresponding to voltage between both terminals of a capacitive element is supplied to the display element.

摘要翻译： 在有源矩阵型显示装置中，在第一选择期间，驱动晶体管和显示元件的第二主导体端子被隔离，同时驱动晶体管和第二主导电端子的控制端子和 连接信号线，并向信号线提供能够导通驱动晶体管的第一电流。 第一电流不对应于与注入显示元件的电流相对应的信号电流。 在第二选择期间，驱动晶体管的第二主导电端子与信号线之间的连接断开，信号线被提供第二电流。 第二电流对应于对应于注入到显示元件的电流的信号电流。 在非选择期间，连接驱动晶体管的第二主导电端子和显示元件，将与电容元件两端的电压对应的驱动晶体管的驱动电流提供给显示元件。

公开(公告)号：US20090121980A1

公开(公告)日：2009-05-14

申请号：US12091230

申请日：2007-06-29

申请人： Somei Kawasaki ,  Takanori Yamashita

发明人： Somei Kawasaki ,  Takanori Yamashita

IPC分类号： G09G3/30

CPC分类号： G09G3/30 ,  G09G3/20 ,  G09G3/3283 ,  G09G2300/0417 ,  G09G2300/0819 ,  G09G2300/0861 ,  G09G2310/0262 ,  G09G2310/0272 ,  G09G2310/0297 ,  G09G2320/0233 ,  H01L27/1296 ,  H01L27/3244

摘要： A display apparatus has a plurality of column-current generating circuits for supplying signal currents respectively to the corresponding columns of a plurality of EL devices that are arranged two-dimensionally. Each of the column-current generating circuits includes two or more transistor devices the gates, sources and drains of which are respectively connected in parallel so as to function as a single transistor. The transistor devices are arranged at a pitch equal to or n-times of the alignment period in the row direction of the EL devices and at a constant pitch equal to the alignment period in the column direction of the EL devices.

摘要翻译： 显示装置具有多个用于将信号电流分别提供给二维布置的多个EL器件的相应列的列电流产生电路。 每个列电流产生电路包括两个或更多个晶体管器件，其栅极，源极和漏极分别并联连接，以用作单个晶体管。 晶体管器件以等于EL器件的行方向的取向周期等于或n倍的间距并且以等于EL器件的列方向上的取向周期的恒定间距排列。

公开(公告)号：US20090066615A1

公开(公告)日：2009-03-12

申请号：US12203482

申请日：2008-09-03

申请人： Somei Kawasaki

发明人： Somei Kawasaki

IPC分类号： G09G3/30

CPC分类号： G09G3/30 ,  G09G3/3233 ,  G09G2300/0852 ,  H01L27/3211 ,  H01L27/3265

摘要： A display apparatus comprises: plural light emitting devices emitting light by plural kinds of colors; a driving circuit for each light emitting device; a scanning line selecting the driving circuit; a light emission control line causing the light emitting devices to emit light; and a data line supplying to the selected driving circuit a current signal according to brightness, wherein the driving circuit comprises a driving transistor supplying a current, a first-switch between a gate of the driving transistor and the data line, a second-switch between a drain of the driving transistor and the light emitting device, a first-capacitor having one end connected to the gate of the driving transistor and the other end potential-fixed, and a second-capacitor connected to the gate of the driving transistor and the light emission control line, and a capacitance ratio of the second-capacitor to first-capacitor varies according to the color of the emitted light.

摘要翻译： 显示装置包括：通过多种颜色发光的多个发光装置; 用于每个发光器件的驱动电路; 选择驱动电路的扫描线; 发光装置发光的发光控制线; 以及向选择的驱动电路提供根据亮度的电流信号的数据线，其中所述驱动电路包括提供电流的驱动晶体管，所述驱动晶体管的栅极与所述数据线之间的第一开关， 驱动晶体管和发光器件的漏极，其一端连接到驱动晶体管的栅极并且另一端电位固定的第一电容器和连接到驱动晶体管的栅极的第二电容器和 发光控制线，并且第二电容器与第一电容器的电容比根据发射光的颜色而变化。

公开(公告)号：US20090033599A1

公开(公告)日：2009-02-05

申请号：US12182582

申请日：2008-07-30

申请人： Somei Kawasaki ,  Fujio Kawano

发明人： Somei Kawasaki ,  Fujio Kawano

IPC分类号： G09G3/30

CPC分类号： G09G3/3233 ,  G09G2300/0819 ,  G09G2320/043

摘要： An active matrix display apparatus comprising two-dimensional arranged pixel circuits each including a display element connected with a signal line for supplying a current thereto and a scanning line, and further including a drive transistor and a capacitor, one terminal thereof being connected to a control terminal of the drive transistor, wherein a first main conductive terminal of the drive transistor and the other terminal of the capacitor are connected to a lighting power source for supplying a current to the display element, and wherein at the current writing operation, the current supplied to the signal line is conducted to the drive transistor and at the lighting operation, the conductive current is injected into the display element so that before completion of the write operation, a voltage drop by a predetermined value is started to the voltage of the lighting power source and is kept continued for a predetermined period.

摘要翻译： 一种有源矩阵显示装置，包括二维排列像素电路，每个二维排列像素电路包括与用于提供电流的信号线连接的显示元件和扫描线，并且还包括驱动晶体管和电容器，其一端连接到控制器 驱动晶体管的端子，其中驱动晶体管的第一主导体端子和电容器的另一端子连接到用于向显示元件提供电流的照明电源，并且其中在当前写入操作时，提供的电流 信号线被传导到驱动晶体管并且在点亮操作时，导电电流被注入到显示元件中，使得在写入操作完成之前，开始对照明功率的电压的预定值的电压降 来源，并保持持续一段预定时间。