利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

12 条记录 (耗时 0.019 秒)

    Pixel current driver for organic light emitting diode displays
    2.
    发明授权
    Pixel current driver for organic light emitting diode displays 有权
    有机发光二极管显示器的像素电流驱动器

    公开(公告)号：US07414600B2

    公开(公告)日：2008-08-19

    申请号：US11247455

    申请日：2005-10-11

    申请人： Arokia Nathan ,  Peyman Servati ,  Kapil Sakariya ,  Anil Kumar

    发明人： Arokia Nathan ,  Peyman Servati ,  Kapil Sakariya ,  Anil Kumar

    IPC分类号： G09G3/32

    CPC分类号： G09G3/3233 ,  G09G3/3241 ,  G09G2300/0804 ,  G09G2320/0223 ,  H01L27/12 ,  H01L27/283 ,  H01L27/3276

    摘要： A pixel current driver comprises a plurality of thin film transistors (TFTs) each having dual gates and for driving OLED layers. A top gate of the dual gates is formed between a source and a drain of each of the thin film transistors, to thereby minimize parasitic capacitance. The top gate is grounded or electrically tied to a bottom gate. The plurality of thin film transistors may be two thin film transistors formed in voltage-programmed manner or five thin film transistors formed in a current-programmed ΔVT-compensated manner. Other versions of the current-programmed circuit with different numbers of thin film transistors are also presented that compensate for δVT. The OLED layer are continuous and vertically stacked on the plurality of thin film transistors to provide an aperture ratio close to 100%.

    摘要翻译： 像素电流驱动器包括多个薄膜晶体管（TFT），每个薄膜晶体管具有双栅极和用于驱动OLED层。 在每个薄膜晶体管的源极和漏极之间形成双栅极的顶栅，从而使寄生电容最小化。 顶门接地或电连接到底栅。 多个薄膜晶体管可以是以电压编程方式形成的两个薄膜晶体管或以电流编程的DeltaV补偿方式形成的五个薄膜晶体管。 还提供了具有不同数量的薄膜晶体管的电流编程电路的其他版本，其补偿deltaV 。 OLED层在多个薄膜晶体管上连续且垂直地堆叠，以提供接近100％的孔径比。

    Pixel driver circuit
    6.
    发明申请
    Pixel driver circuit 有权
    像素驱动电路

    公开(公告)号：US20070182671A1

    公开(公告)日：2007-08-09

    申请号：US10554795

    申请日：2004-09-23

    申请人： Arokia Nathan ,  Kapil Sakariya ,  Peyman Servati ,  Shahin Jafarabadiashtiani

    发明人： Arokia Nathan ,  Kapil Sakariya ,  Peyman Servati ,  Shahin Jafarabadiashtiani

    IPC分类号： G09G3/30

    CPC分类号： G09G3/3241 ,  G09G3/325 ,  G09G3/3266 ,  G09G3/3283 ,  G09G2300/0417 ,  G09G2300/0809 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2320/0646 ,  H05B33/0896 ,  H05B37/0209

    摘要： A pixel circuit for use in a display comprising a plurality of pixels is provided. The load-balanced current mirror pixel circuit can compensate for device degradation and/or mismatch, and changing environmental factors like temperature and mechanical strain. The pixel circuit comprises a pixel drive circuit comprising, switching circuitry, a current mirror having a reference transistor and a drive transistor, the reference transistor and the drive transistor each having a first and second node and a gate, the gate of the reference transistor being connected to the gate of the drive transistor; and a capacitor connected between the gate of the reference transistor and a ground potential, and a load connected between the current mirror and a ground potential, the load having a first load element and a second load element, the first load element being connected to the first node of the reference transistor and the second load element being connected to the first node of the drive transistor.

    摘要翻译： 提供了用于包括多个像素的显示器中的像素电路。 负载平衡电流镜像素电路可以补偿器件劣化和/或失配，并改变环境因素，如温度和机械应变。 像素电路包括像素驱动电路，其包括开关电路，具有参考晶体管和驱动晶体管的电流镜，所述参考晶体管和驱动晶体管各自具有第一和第二节点和栅极，所述参考晶体管的栅极为 连接到驱动晶体管的栅极; 连接在参考晶体管的栅极和接地电位之间的电容器以及连接在电流反射镜和接地电位之间的负载，负载具有第一负载元件和第二负载元件，第一负载元件连接到 参考晶体管的第一节点和第二负载元件连接到驱动晶体管的第一节点。

    Pixel current driver for organic light emitting diode displays
    7.
    发明申请
    Pixel current driver for organic light emitting diode displays 有权
    有机发光二极管显示器的像素电流驱动器

    公开(公告)号：US20060027807A1

    公开(公告)日：2006-02-09

    申请号：US11247455

    申请日：2005-10-11

    申请人： Arokia Nathan ,  Peyman Servati ,  Kapil Sakariya

    发明人： Arokia Nathan ,  Peyman Servati ,  Kapil Sakariya

    IPC分类号： H01L29/04

    CPC分类号： G09G3/3233 ,  G09G3/3241 ,  G09G2300/0804 ,  G09G2320/0223 ,  H01L27/12 ,  H01L27/283 ,  H01L27/3276

    摘要： A pixel current driver comprises a plurality of thin film transistors (TFTs) each having dual gates and for driving OLED layers. A top gate of the dual gates is formed between a source and a drain of each of the thin film transistors, to thereby minimize parasitic capacitance. The top gate is grounded or electrically tied to a bottom gate. The plurality of thin film transistors may be two thin film transistors formed in voltage-programmed manner or five thin film transistors formed in a current-programmed ΔVT-compensated manner. Other versions of the current-programmed circuit with different numbers of thin film transistors are also presented that compensate for δVT. The OLED layer are continuous and vertically stacked on the plurality of thin film transistors to provide an aperture ratio close to 100%.

    摘要翻译： 像素电流驱动器包括多个薄膜晶体管（TFT），每个薄膜晶体管具有双栅极和用于驱动OLED层。 在每个薄膜晶体管的源极和漏极之间形成双栅极的顶栅，从而使寄生电容最小化。 顶门接地或电连接到底栅。 多个薄膜晶体管可以是以电压编程方式形成的两个薄膜晶体管或以电流编程的DeltaV补偿方式形成的五个薄膜晶体管。 还提供了具有不同数量的薄膜晶体管的电流编程电路的其他版本，其补偿deltaV 。 OLED层在多个薄膜晶体管上连续且垂直地堆叠，以提供接近100％的孔径比。

    Integrated multiplexer/de-multiplexer for active-matrix display/imaging arrays
    8.
    发明授权
    Integrated multiplexer/de-multiplexer for active-matrix display/imaging arrays 有权
    用于有源矩阵显示/成像阵列的集成多路复用器/解复用器

    公开(公告)号：US07573452B2

    公开(公告)日：2009-08-11

    申请号：US10487034

    申请日：2002-08-15

    申请人： Arokia Nathan ,  Karim S. Karim ,  Nitin Mohan ,  Anil Kumar ,  Kapil Sakariya

    发明人： Arokia Nathan ,  Karim S. Karim ,  Nitin Mohan ,  Anil Kumar ,  Kapil Sakariya

    IPC分类号： G09G3/36

    CPC分类号： G09G3/3677

    摘要： Integrated multiplexer/de-multiplexer for a pixel array is provided. A drive circuit having the de-multiplexer is provided to a gate line arranged for a pixel array. A pixel is selected using the drive circuit. A read circuit having the multiplexer is provided to a data line arranged for the pixel array. Data output from a pixel is read using the read circuit.

    摘要翻译： 提供了用于像素阵列的集成多路复用器/去多路复用器。 具有去多路复用器的驱动电路被提供给布置用于像素阵列的栅极线。 使用驱动电路选择像素。 具有多路复用器的读取电路被提供给布置用于像素阵列的数据线。 使用读取电路读取来自像素的数据输出。

    REDUCING ERRORS IN DATA BY SYNCHRONIZING OPERATIONS WITH NOISELESS PERIODS OF DATA TRANSMISSION
    9.
    发明申请
    REDUCING ERRORS IN DATA BY SYNCHRONIZING OPERATIONS WITH NOISELESS PERIODS OF DATA TRANSMISSION 审中-公开
    通过与无数据传输时段同步操作来减少数据中的错误

    公开(公告)号：US20090202002A1

    公开(公告)日：2009-08-13

    申请号：US12240692

    申请日：2008-09-29

    申请人： Wei Yao ,  Wei Chen ,  Kapil Sakariya

    发明人： Wei Yao ,  Wei Chen ,  Kapil Sakariya

    IPC分类号： H04B14/04

    CPC分类号： H03K19/0027 ,  G09G5/00

    摘要： Methods, systems, computer readable media and means for reducing errors in data caused by noise are provided. In some embodiments of the present invention, timing data is transferred from first circuitry to second circuitry. From the timing data, one or both of the first circuitry and the second circuitry detect whether noise is present as a result of the operations of the first circuitry. If it is detected that noise is present the second circuitry waits for the cessation of the noise before functioning again. If it is detected that no noise is present, the second circuitry functions.

    摘要翻译： 提供了用于减少由噪声引起的数据中的错误的方法，系统，计算机可读介质和装置。 在本发明的一些实施例中，定时数据从第一电路传送到第二电路。 根据定时数据，第一电路和第二电路中的一个或两个检测作为第一电路的操作的结果是否存在噪声。 如果检测到噪声存在，则第二电路在再次起作用之前等待噪声的停止。 如果检测到没有噪声存在，则第二电路起作用。

    Method and apparatus for managing and uniformly maintaining pixel circuitry in a flat panel display
    10.
    发明申请
    Method and apparatus for managing and uniformly maintaining pixel circuitry in a flat panel display 审中-公开
    用于管理和均匀地维护平板显示器中的像素电路的方法和装置

    公开(公告)号：US20080048951A1

    公开(公告)日：2008-02-28

    申请号：US11710462

    申请日：2007-02-22

    申请人： Walter Naugler ,  Donald Wile ,  Kapil Sakariya

    发明人： Walter Naugler ,  Donald Wile ,  Kapil Sakariya

    IPC分类号： G09G3/32

    CPC分类号： G09G3/3233 ,  G09G3/006 ,  G09G3/3291 ,  G09G2320/0242 ,  G09G2320/0276 ,  G09G2320/0295 ,  G09G2320/045 ,  G09G2320/048 ,  G09G2330/12

    摘要： The present invention describes a method and apparatus for measuring the voltage and current characteristics of the OLED pixel as it ages and correlating the measured data to the decrease in quantum efficiency and changes in OLED impedance over the life of the OLED, so that corrections can be made to the image drive system to prevent image sticking and color point drift. The method and apparatus of the present invention do not require any additional circuitry or changes in the display design. The circuitry of the present invention is implemented in the display driver integrated circuit (IC) chips. The basis of the invention is the luminance-current-voltage (LIV) curves which characterize the OLED materials over their life time. A series of these curves are stored in memory representing a OLED material at various ages. The apparatus of the present invention is used to measure driver voltages and currents for a pixel having an OLED, which measurements are then used to extract the voltage current curve for the OLED at any point in time. The extracted curve is compared to the aging curves stored in memory to determine the aging curve that best describes the measured present voltage current characteristic of the pixel. That aging curve is used to drive the pixel.

    摘要翻译： 本发明描述了一种用于测量OLED像素的电压和电流特性的方法和装置，当OLED像素老化并使测量数据与OLED的寿命期间量子效率的降低和OLED阻抗的变化相关联时，校正可以是 制作图像驱动系统，防止图像粘贴和色点漂移。 本发明的方法和装置不需要任何额外的电路或显示设计的改变。 本发明的电路在显示驱动器集成电路（IC）芯片中实现。 本发明的基础是在其寿命中表征OLED材料的亮度 - 电流 - 电压（LIV）曲线。 这些曲线的一系列存储在代表各种年龄的OLED材料的存储器中。 本发明的装置用于测量具有OLED的像素的驱动电压和电流，然后使用这些测量值在任何时间点提取OLED的电压电流曲线。 将提取的曲线与存储在存储器中的老化曲线进行比较，以确定最佳描述所测量的当前电压电流特性的老化曲线。 该老化曲线用于驱动像素。