公开(公告)号：US07307605B2

公开(公告)日：2007-12-11

申请号：US11001593

申请日：2004-12-01

申请人： Masamichi Shimoda ,  Katsumi Abe ,  Koichi Iguchi

发明人： Masamichi Shimoda ,  Katsumi Abe ,  Koichi Iguchi

IPC分类号： G09G3/30

CPC分类号： G09G3/3283 ,  G09G3/3241 ,  G09G3/325 ,  G09G2300/0842 ,  G09G2310/0248 ,  G09G2310/027 ,  G09G2320/0223

摘要： A precharge circuit is provided with an N-channel transistor intended for switching. A reference potential is applied to either one of the source and drain of this N-channel transistor. The other of the source and drain is connected to a node. A precharge signal is applied to the gate of the N-channel transistor. The reference potential is set to a precharge output potential for the case of displaying black on a pixel, i.e., the potential when a minimum current flows through a P-channel transistor connected to the other of the source and drain of the N-channel transistor.

摘要翻译： 预充电电路设置有用于切换的N沟道晶体管。 对N沟道晶体管的源极和漏极之一施加参考电位。 源和漏极中的另一个连接到一个节点。 预充电信号施加到N沟道晶体管的栅极。 将参考电位设置为在像素上显示黑色的情况下的预充电输出电位，即当最小电流流过连接到N沟道晶体管的源极和漏极中的另一个的P沟道晶体管时的电位 。

公开(公告)号：US20050116747A1

公开(公告)日：2005-06-02

申请号：US11001593

申请日：2004-12-01

申请人： Masamichi Shimoda ,  Katsumi Abe ,  Koichi Iguchi

发明人： Masamichi Shimoda ,  Katsumi Abe ,  Koichi Iguchi

IPC分类号： H01L51/50 ,  G09G3/20 ,  G09G3/30 ,  G09G3/32 ,  H03B1/00 ,  H03K17/00 ,  H03K17/687 ,  H04N3/00 ,  H04N5/70 ,  H05B33/14

CPC分类号： G09G3/3283 ,  G09G3/3241 ,  G09G3/325 ,  G09G2300/0842 ,  G09G2310/0248 ,  G09G2310/027 ,  G09G2320/0223

摘要： A precharge circuit is provided with an N-channel transistor intended for switching. A reference potential is applied to either one of the source and drain of this N-channel transistor. The other of the source and drain is connected to a node. A precharge signal is applied to the gate of the N-channel transistor. The reference potential is set to a precharge output potential for the case of displaying black on a pixel, i.e., the potential when a minimum current flows through a P-channel transistor connected to the other of the source and drain of the N-channel transistor.

摘要翻译： 预充电电路设置有用于切换的N沟道晶体管。 对N沟道晶体管的源极和漏极之一施加参考电位。 源和漏极中的另一个连接到一个节点。 预充电信号施加到N沟道晶体管的栅极。 将参考电位设置为在像素上显示黑色的情况下的预充电输出电位，即当最小电流流过连接到N沟道晶体管的源极和漏极中的另一个的P沟道晶体管时的电位 。

公开(公告)号：US5719722A

公开(公告)日：1998-02-17

申请号：US570085

申请日：1995-12-11

申请人： Masamichi Shimoda

发明人： Masamichi Shimoda

IPC分类号： G11B21/08 ,  G11B5/55 ,  G11B21/10 ,  G11B5/596

CPC分类号： G11B5/5547

摘要： A head tracking system for a magnetic head includes a servo signal generator for generating a position error signal, a low-pass filter passing the position error signal, an A/D converter converting the position error signal into a digital position error signal, a signal processor for generating a total error signal based on the digital position error signal and the distance between the present track and the target track, and an actuator moving the magnetic head to the target track based on the total position error signal. The low-pass filter has a cut-off frequency equal to one-half the sampling frequency of the A/D converter. If the frequency of the position error signal is high, the output of the servo signal is supplied by a selector directly to the A/D converter thereby bypassing the low-pass filter. Alternatively, the cut-off frequency of the low-pass filter is controlled based on the frequency of the position error signal.

摘要翻译： 用于磁头的磁头跟踪系统包括用于产生位置误差信号的伺服信号发生器，通过位置误差信号的低通滤波器，将位置误差信号转换为数字位置误差信号的A / D转换器， 处理器，用于基于数字位置误差信号和当前轨道与目标轨道之间的距离产生总误差信号，以及致动器，基于总位置误差信号将磁头移动到目标轨迹。 低通滤波器的截止频率等于A / D转换器采样频率的一半。 如果位置误差信号的频率高，则伺服信号的输出由选择器直接提供给A / D转换器，从而绕过低通滤波器。 或者，基于位置误差信号的频率来控制低通滤波器的截止频率。

公开(公告)号：US20100208187A1

公开(公告)日：2010-08-19

申请号：US12656721

申请日：2010-02-16

申请人： Soichi Saito ,  Shinya Niioka ,  Masayuki Jumonji ,  Hiroshi Tanabe ,  Masamichi Shimoda

发明人： Soichi Saito ,  Shinya Niioka ,  Masayuki Jumonji ,  Hiroshi Tanabe ,  Masamichi Shimoda

IPC分类号： G02F1/1343 ,  G02F1/13

CPC分类号： G02F1/134363 ,  G02F1/136286 ,  G02F2001/136295

摘要： A liquid crystal display device of IPS mode includes an array of pixels arranged in a matrix pattern by crossing a plurality of video signal lines and a plurality of scanning signal lines each other. Each of the pixels is provided with at least a switching element. A transparent insulating film is provided on both signal lines, and a plurality of pixel electrodes, common electrodes and common lines are provided on the transparent insulating film. The common lines are formed in a grid-shaped pattern such that a first group of the common lines is made of a first conductor having lower reflectivity against optical light than that of metal while a second group of the common lines is made of a second conductor including a metal layer such that the first group and the second group are crossing each other along the video signal lines and the scanning signal lines.

摘要翻译： IPS模式的液晶显示装置包括通过使多条视频信号线和多条扫描信号线相互交叉而以矩阵状排列的像素阵列。 每个像素设置有至少一个开关元件。 在两条信号线上设置透明绝缘膜，在透明绝缘膜上设置多个像素电极，公共电极和公共线。 公共线形成为格子状图案，使得第一组公共线由具有比光的反射率低的金属的第一导体制成，而第二组公共线由第二导体 包括金属层，使得第一组和第二组沿着视频信号线和扫描信号线彼此交叉。

公开(公告)号：US20050029968A1

公开(公告)日：2005-02-10

申请号：US10910354

申请日：2004-08-04

申请人： Masamichi Shimoda

发明人： Masamichi Shimoda

IPC分类号： H01L51/50 ,  G05F3/26 ,  G09G3/20 ,  G09G3/30 ,  G05F1/00

CPC分类号： G09G3/3283 ,  G05F3/262 ,  G09G2300/0842 ,  G09G2310/027 ,  G09G2320/0285 ,  G09G2320/043

摘要： An object of the present invention is to provide a display device for making it possible to accurately adjust a gradation current even if there is a variation in characteristics of a transistor for driving an organic EL element in a display device using an organic EL element. The following are included: a current detecting circuit for detecting a current circulating through a light emitting element, a current adjustment control circuit for comparing the detected current value with a reference current value and adjusting a current to be supplied to the light emitting element of a display portion in accordance with the comparison result, and a reference current circuit for generating a reference current correspondingly to the adjusted current. Moreover, a reference current circuit is formed on the substrate same as the substrate on which a light emitting element of a display portion is formed. Thereby, the variation of transistor devices constituting the reference current circuit is corrected and the reference current can be adjusted at a high accuracy.

摘要翻译： 本发明的目的是提供一种即使在使用有机EL元件的显示装置中用于驱动有机EL元件的晶体管的特性变化也能够精确地调整灰度电流的显示装置。 包括以下内容：用于检测通过发光元件循环的电流的电流检测电路，用于将检测到的电流值与参考电流值进行比较的电流调节控制电路，并且调整要提供给发光元件的电流的电流 显示部分，以及用于相应于调整后的电流产生参考电流的参考电流电路。 此外，在与形成有显示部的发光元件的基板相同的基板上形成基准电流电路。 因此，构成基准电流电路的晶体管器件的变化被校正，并且可以高精度地调整参考电流。

公开(公告)号：US20050007361A1

公开(公告)日：2005-01-13

申请号：US10886615

申请日：2004-07-09

申请人： Katsuyuki Fujikura ,  Katsumi Abe ,  Masamichi Shimoda

发明人： Katsuyuki Fujikura ,  Katsumi Abe ,  Masamichi Shimoda

IPC分类号： H01L51/50 ,  G09G3/20 ,  G09G3/30 ,  G09G3/32 ,  G09G5/00

CPC分类号： G09G3/325 ,  G09G2300/0852 ,  G09G2300/0861 ,  G09G2310/062

摘要： A display device is comprised of a data line driver, a scan line driver, and a display panel. The display panel is composed of a plurality of drive legs disposed between a current output node and a first node having a fixed potential, each of the drive legs including a drive transistor having a source connected to the first node, a capacitor connected between a gate of the drive transistor and a second node having a fixed potential, a first switch connected between the current output node and a drain of the drive transistor, and a second switch connected between the gate and the drain of the drive transistor. The display panel further includes a data line, a third switch connected between the current output node and the data line, a current-driven element, a fourth switch connected between the current output node and the current-driven element.

摘要翻译： 显示装置由数据线驱动器，扫描线驱动器和显示面板组成。 显示面板由设置在电流输出节点和具有固定电位的第一节点之间的多个驱动支路组成，每个驱动支路包括具有连接到第一节点的源极的驱动晶体管，连接在栅极之间的电容器 并且具有固定电位的第二节点，连接在电流输出节点和驱动晶体管的漏极之间的第一开关以及连接在驱动晶体管的栅极和漏极之间的第二开关。 显示面板还包括数据线，连接在当前输出节点和数据线之间的第三开关，电流驱动元件，连接在电流输出节点和电流驱动元件之间的第四开关。