公开(公告)号：US09497805B2

公开(公告)日：2016-11-15

申请号：US13703088

申请日：2011-06-13

申请人： Tsukasa Yagi ,  Kouichi Ishida ,  Yuichi Iketsu ,  Kouji Miyawaki

发明人： Tsukasa Yagi ,  Kouichi Ishida ,  Yuichi Iketsu ,  Kouji Miyawaki

IPC分类号： H05B37/02 ,  H05B33/08 ,  H01L27/32

CPC分类号： H05B33/08 ,  H01L27/3276 ,  H05B33/0896 ,  Y02B20/32

摘要： An organic EL element driving device that drives an organic EL element with a constant current is provided. The organic EL element driving device includes a power supply connected in series with the organic EL element, and a current control unit connected in series with the organic EL element. The current control unit includes a current detection circuit having a resistor for detecting the value of the current passing through the organic EL element. The current control unit sets a prescribed value for the current to be passed through the organic EL element in accordance with the luminance control, and performs control such that the current passing through the organic EL element has the prescribed value in accordance with an output from the current detection circuit. A value of the resistor in the current detection circuit is varied in accordance with the luminance control.

摘要翻译： 提供了以恒定电流驱动有机EL元件的有机EL元件驱动装置。 有机EL元件驱动装置包括与有机EL元件串联连接的电源和与有机EL元件串联连接的电流控制单元。 电流控制单元包括具有用于检测通过有机EL元件的电流的值的电阻器的电流检测电路。 电流控制单元根据亮度控制设定要通过有机EL元件的电流的规定值，并且进行控制，使得通过有机EL元件的电流根据来自该有机EL元件的输出而具有规定值 电流检测电路。 电流检测电路中的电阻值根据亮度控制而变化。

公开(公告)号：US20130088174A1

公开(公告)日：2013-04-11

申请号：US13703088

申请日：2011-06-13

申请人： Tsukasa Yagi ,  Kouichi Ishida ,  Yuichi Iketsu ,  Kouji Miyawaki

发明人： Tsukasa Yagi ,  Kouichi Ishida ,  Yuichi Iketsu ,  Kouji Miyawaki

IPC分类号： H05B33/08

CPC分类号： H05B33/08 ,  H01L27/3276 ,  H05B33/0896 ,  Y02B20/32

摘要： An organic EL element driving device that drives an organic EL element with a constant current is provided. The organic EL element driving device includes a power supply connected in series with the organic EL element, and a current control unit connected in series with the organic EL element. The current control unit includes a current detection circuit having a resistor for detecting the value of the current passing through the organic EL element. The current control unit sets a prescribed value for the current to be passed through the organic EL element in accordance with the luminance control, and performs control such that the current passing through the organic EL element has the prescribed value in accordance with an output from the current detection circuit. A value of the resistor in the current detection circuit is varied in accordance with the luminance control.

摘要翻译： 提供了以恒定电流驱动有机EL元件的有机EL元件驱动装置。 有机EL元件驱动装置包括与有机EL元件串联连接的电源和与有机EL元件串联连接的电流控制单元。 电流控制单元包括具有用于检测通过有机EL元件的电流的值的电阻器的电流检测电路。 电流控制单元根据亮度控制设定要通过有机EL元件的电流的规定值，并且进行控制，使得通过有机EL元件的电流根据来自该有机EL元件的输出而具有规定值 电流检测电路。 电流检测电路中的电阻值根据亮度控制而变化。

公开(公告)号：US08710748B2

公开(公告)日：2014-04-29

申请号：US13514316

申请日：2010-11-22

申请人： Yuichi Iketsu ,  Tsukasa Yagi ,  Kouichi Ishida

发明人： Yuichi Iketsu ,  Tsukasa Yagi ,  Kouichi Ishida

IPC分类号： H05B37/00 ,  H05B41/16 ,  H05B37/02

CPC分类号： H01L27/3204 ,  H01L2251/5361 ,  H05B33/0818 ,  H05B33/0845 ,  H05B33/0896 ,  Y02B20/347 ,  Y02B20/36

摘要： Disclosed is an illumination apparatus, which is constituted by a plurality of OLED devices and makes it possible to improve an accuracy of a dimming control operation. The apparatus is provided with a driving electric power source including: a pulse generating section; an OLED driving section; a first voltage source; a second voltage source; a current source; a switchover section that conducts a switchover operation between the first voltage source and the current source during the time when the duty ratio of the driving pulses is increasing, and also conducts another switchover operation between the first voltage source and the current source during the time when the duty ratio of the driving pulses is decreasing; and an OLED illumination disabling section that makes the second voltage source supply the second electric power to the OLED unit, only during the time when each of the pulses is the OFF state.

摘要翻译： 公开了一种照明装置，其由多个OLED装置构成，并且能够提高调光控制操作的精度。 该装置设置有驱动电源，包括：脉冲发生部; OLED驱动部分; 第一电压源; 第二电压源; 当前来源; 切换部，其在所述驱动脉冲的占空比增加的期间，进行所述第一电压源与所述电流源的切换动作，并且还在所述第一电压源与所述电流源的时间之间进行另一切换动作 驱动脉冲的占空比正在减小; 以及仅在每个脉冲为OFF状态的时间期间使第二电压源向OLED单元提供第二电力的OLED照明禁用部分。

公开(公告)号：US20120242233A1

公开(公告)日：2012-09-27

申请号：US13514316

申请日：2010-11-22

申请人： Yuichi Iketsu ,  Tsukasa Yagi ,  Kouichi Ishida

发明人： Yuichi Iketsu ,  Tsukasa Yagi ,  Kouichi Ishida

IPC分类号： H05B37/00

CPC分类号： H01L27/3204 ,  H01L2251/5361 ,  H05B33/0818 ,  H05B33/0845 ,  H05B33/0896 ,  Y02B20/347 ,  Y02B20/36

摘要： Disclosed is an illumination apparatus, which is constituted by a plurality of OLED devices and makes it possible to improve an accuracy of a dimming control operation. The apparatus is provided with a driving electric power source including: a pulse generating section; an OLED driving section; a first voltage source; a second voltage source; a current source; a switchover section that conducts a switchover operation between the first voltage source and the current source during the time when the duty ratio of the driving pulses is increasing, and also conducts another switchover operation between the first voltage source and the current source during the time when the duty ratio of the driving pulses is decreasing; and an OLED illumination disabling section that makes the second voltage source supply the second electric power to the OLED unit, only during the time when each of the pulses is the OFF state.

摘要翻译： 公开了一种照明装置，其由多个OLED装置构成，并且能够提高调光控制操作的精度。 该装置设置有驱动电源，包括：脉冲发生部; OLED驱动部分; 第一电压源; 第二电压源; 当前来源; 切换部，其在所述驱动脉冲的占空比增加的期间，进行所述第一电压源与所述电流源的切换动作，并且还在所述第一电压源与所述电流源的时间之间进行另一切换动作 驱动脉冲的占空比正在减小; 以及仅在每个脉冲为OFF状态的时间期间使第二电压源向OLED单元提供第二电力的OLED照明禁用部分。

公开(公告)号：US06956595B1

公开(公告)日：2005-10-18

申请号：US09665915

申请日：2000-09-20

申请人： Tsukasa Yagi ,  Ken Matsubara ,  Tatsuya Kanazawa ,  Tomohiko Masuda

发明人： Tsukasa Yagi ,  Ken Matsubara ,  Tatsuya Kanazawa ,  Tomohiko Masuda

IPC分类号： B41J2/445 ,  B41J2/47 ,  G02F1/055 ,  G03B27/32 ,  G03B27/73 ,  G03G15/043

CPC分类号： G03G15/0435 ,  G03G2215/0424

摘要： While light of R, G and B is switched from one to another and directed to a plurality of light shutter elements made of PLZT, a voltage is applied in accordance with image data between individual electrodes for the respective light shutter elements and a common electrode for all the light shutter elements. While a half-wave voltage Vr for light of R is applied to the individual electrodes, the voltage applied to the common electrode is altered to 0V, Vr-Vg and Vr-Vb in synchronization with switch of the three primary colors so that half-wave voltages for the respective colors can be applied to the light shutter elements.

摘要翻译： 当R，G和B的光从一个切换到另一个并被引导到由PLZT制成的多个光快门元件时，根据用于各个光快门元件的各个电极之间的图像数据施加电压，并且将公共电极 所有的光快门元件。 虽然R的光的半波电压Vr被施加到各个电极，但是施加到公共电极的电压与三原色的开关同步地改变为0V，Vr-Vg和Vr-Vb， 可以将各种颜色的波电压施加到光快门元件。

公开(公告)号：US06347894B1

公开(公告)日：2002-02-19

申请号：US09614197

申请日：2000-07-12

申请人： Tsukasa Yagi ,  Isao Doi ,  Yuji Kamoda

发明人： Tsukasa Yagi ,  Isao Doi ,  Yuji Kamoda

IPC分类号： G02F100

CPC分类号： G02F1/0316 ,  G02F1/0551 ,  G02F2201/122

摘要： A light shutter device which, on a planar PLZT substrate, has a plurality of light transmitting portions (light shutter elements) which are disposed in two groups separated by a common electrode, and individual electrodes provided for the respective elements. Adjacent light shutter elements in each of the groups are arranged in mutually different lines so as to inhibit crosstalk.

摘要翻译： 一种光快门装置，其在平面PLZT基板上具有设置在由公共电极分隔开的两组中的多个光透射部分（光快门元件）和为各个元件设置的各个电极。 各组中的相邻的光快门元件以相互不同的线布置，以便抑制串扰。

公开(公告)号：US5317347A

公开(公告)日：1994-05-31

申请号：US006159

申请日：1993-01-19

申请人： Tomohiko Masuda ,  Ken Matsubara ,  Tsukasa Yagi ,  Koji Wakamiya ,  Hirohisa Kitano

发明人： Tomohiko Masuda ,  Ken Matsubara ,  Tsukasa Yagi ,  Koji Wakamiya ,  Hirohisa Kitano

IPC分类号： G03G15/06 ,  G03G15/32 ,  G01D15/14

CPC分类号： G03G15/326 ,  G03G15/065 ,  G03G15/0435

摘要： An image forming apparatus which comprises a light shutter disposed between a source of light and an image carrier, which is electrostatically charged to a predetermined polarity, and capable of exhibiting a light transmissivity which varies according to a voltage applied to the light shutter. A first voltage of a predetermined direction is applied to the light shutter according to image information during a first period in which a first area of the image carrier passes across the light shutter, to form the electrostatic latent image on the image carrier. This electrostatic latent image is subsequently developed into a toner image. In order to substantially recover the light shutter from a light-induced fatigue, i.e., internal polarization of an electro-optical material forming the light shutter, a second voltage of a direction counter to the predetermined direction is applied to the light shutter during a second period in which a second area of the image carrier passes across the light shutter.

摘要翻译： 一种图像形成装置，包括设置在光源和图像载体之间的光闸，其被静电充电至预定极性，并且能够表现出根据施加到光闸的电压而变化的光透射率。 在图像载体的第一区域穿过光快门的第一时段期间，根据图像信息将预定方向的第一电压施加到光闸，以在图像载体上形成静电潜像。 该静电潜像随后显影成调色剂图像。 为了从光诱发的疲劳（即，形成光闸的电光材料的内部偏振）基本上恢复光快门，在第二个时间内将与该预定方向相反的方向的第二电压施加到光闸 图像载体的第二区域穿过光闸的周期。

公开(公告)号：US06812913B2

公开(公告)日：2004-11-02

申请号：US09783061

申请日：2001-02-14

申请人： Naoki Masazumi ,  Makiko Mandai ,  Tsukasa Yagi ,  Mikihiro Komatsu

发明人： Naoki Masazumi ,  Makiko Mandai ,  Tsukasa Yagi ,  Mikihiro Komatsu

IPC分类号： G09G336

CPC分类号： G09G3/3629 ,  G02F1/13718 ,  G09G3/3681 ,  G09G3/3692 ,  G09G2300/023 ,  G09G2300/0486 ,  G09G2310/06 ,  G09G2310/061 ,  G09G2320/041

摘要： A matrix driving method for liquid crystal display having liquid crystal which exhibits cholesteric phase and capability of keeping image displayed after turn-off of electric field applied by using scan electrodes and data electrodes arranged to face and cross each other with the liquid crystal in between, includes applying reset pulse to reset liquid crystal to homeotropic state, selecting final state of liquid crystal, and stabilizing liquid crystal to selected state. The selection step includes, in order named, a first time of applying substantially 0 volt to liquid crystal, a second time of applying selection pulse to select final state of liquid crystal, and a third time of applying substantially 0 volt to liquid crystal. In first or second time, a compensation pulse may be applied to liquid crystal in form determined depending on temperature or so that a plurality of liquid crystal layers will have same scanning speed.

摘要翻译： 一种具有液晶的液晶显示器的矩阵驱动方法，具有显示胆甾醇相的能力，以及通过使用扫描电极和数据电极之间的液晶布置成彼此面对并交叉的电场施加的电场关闭后保持图像的显示能力， 包括施加复位脉冲以将液晶复位为垂直状态，选择液晶的最终状态，以及将液晶稳定到选定状态。 选择步骤按顺序包括对液晶施加大致0伏的第一次，施加选择脉冲以选择液晶的最终状态的第二次，以及向液晶施加大致0伏的第三次。 在第一次或第二次中，可以根据温度确定的形式对液晶施加补偿脉冲，或者使得多个液晶层具有相同的扫描速度。

公开(公告)号：US06201559B1

公开(公告)日：2001-03-13

申请号：US08992810

申请日：1997-12-18

申请人： Kenichi Wada ,  Tsukasa Yagi ,  Tomohiko Masuda ,  Ken Matsubara ,  Yuji Kamoda ,  Itaru Saito

发明人： Kenichi Wada ,  Tsukasa Yagi ,  Tomohiko Masuda ,  Ken Matsubara ,  Yuji Kamoda ,  Itaru Saito

IPC分类号： B41J2435

CPC分类号： B41J2/465 ,  G06K15/1252 ,  G06K2215/0077

摘要： A method for measuring the quantity of light emitted from an optical write head which drives an array of light shutter elements extending in a main scanning direction individually in accordance with image data. In order to measure the quantity of light outputted from each of the light shutter elements, a photosensor is moved in the main scanning direction at a constant speed while the light shutter elements are driven in such a way that adjacent elements are not driven at a time. While light shutter elements which are in odd numbers in the array are driven, the photosensor is moved forward to measure the quantities of light outputted therefrom, and while light shutter elements which are in even numbers in the array are driven, the photosensor is moved backward to measure the quantities of light outputted therefrom. The optical write head is employed in a printer together with a light-quantity measuring unit for the optical write head, so that light-quantity measurement and production of light-quantity correction data are possible at real time.

摘要翻译： 一种用于测量从光学写入头发射的光量的方法，该光学写入头根据图像数据分别驱动沿主扫描方向延伸的光快门元件的阵列。 为了测量从每个光快门元件输出的光量，光传感器以恒定速度在主扫描方向上移动，同时光闸元件被驱动，使得相邻元件不被一次驱动 。 当阵列中奇数的光快门元件被驱动时，光传感器向前移动以测量从其输出的光量，并且当驱动阵列中具有偶数的光快门元件时，光传感器向后移动 以测量从其输出的光量。 光写入头与用于光写入头的光量测量单元一起用于打印机，使得光量测量和光量校正数据的生成可以实时地实现。

公开(公告)号：US5416631A

公开(公告)日：1995-05-16

申请号：US998723

申请日：1992-12-30

申请人： Tsukasa Yagi

发明人： Tsukasa Yagi

IPC分类号： G02F1/055 ,  G02F1/01 ,  G02F1/03

CPC分类号： G02F1/0551

摘要： A light shutter array to be employed in an optical head for a color display, a color printer or the like. The light shutter array has at least three lines of shutter elements which are made of a material having an electrooptic effect. In tile lines, shutter elements which have conductor-filmed windows and shutter elements which have bare windows are staggered. The shutter elements with bare windows function as light shutters, and the shutter elements with conductor-filmed windows function as electrodes. The shutter elements with bare windows in each line are driven in accordance with red, green or blue image data.

摘要翻译： 一种用于彩色显示器的光学头中的光闸阵列，彩色打印机等。 光闸阵列具有由具有电光效应的材料制成的至少三行快门元件。 在瓷砖线中，具有导电膜窗的快门元件和具有裸露窗口的快门元件交错。 具有裸露窗口的快门元件用作光闸，并且具有导体膜的快门元件用作电极。 每个线路上具有裸露窗口的快门元件根据红色，绿色或蓝色图像数据进行驱动。