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    • 151. 发明申请
    • Electrophoretic or bi-stable display device and driving method therefor
    • 电泳或双稳态显示装置及其驱动方法
    • US20060170648A1
    • 2006-08-03
    • US10564539
    • 2004-07-08
    • Guofu ZhouMark Johnson
    • Guofu ZhouMark Johnson
    • G09G3/34
    • G09G3/344G09G3/2018G09G2300/08G09G2300/0876G09G2310/06G09G2320/0204G09G2320/0257G09G2330/04
    • A drive circuit for a bi-stable display comprises: a driver (101, 102) which supplies drive waveforms (DWk) to the pixels (Pij) of the display during an image update period (IUk) wherein the image presented by the pixels (Pij) is updated. A controller (103) controls the driver (101, 102) to supply, during the image update period (IUk) wherein a particular optical transition of a particular one of the pixels (Pij) is required, an associated one of the drive waveforms (DWk) to the particular one of the pixels (Pij). The associated one of the drive waveforms (DWk) comprises a sequence of a particular number of pulse, (SPk), wherein consecutive ones of the pulses (SPk) of the sequence are separated by a separation period of time (SPT). The particular number of said pulses (SPk), and/or a duration of said pulses (SPk), and/or a duration of the separation period (SPT) of the associated one of the drive waveforms (DWk) is determined to obtain the particular optical transition at a desired energy of the associated one of the drive waveforms (DWk) to decrease an average value of the associated one of the drive waveforms (DWk).
    • 用于双稳态显示器的驱动电路包括:驱动器(101,102),其在图像更新周期(IUk)期间向显示器的像素(Pij)提供驱动波形(DWK),其中由像素呈现的图像 Pij)更新。 控制器(103)控制驱动器(101,102)在其中需要特定的像素(Pij)的特定光学转换的图像更新周期(IUk)期间提供相关联的一个驱动波形 DWk)到特定的一个像素(Pij)。 驱动波形(DWk)中的相关联的一个包括特定数量的脉冲序列(SPk),其中序列的连续脉冲(SPk)被分离时间间隔(SPT)。 确定所述脉冲的特定数量(SPk)和/或所述脉冲的持续时间(SPk)和/或相关联的一个驱动波形(DWk)的分离周期(SPT)的持续时间以获得 在相关联的一个驱动波形(DWk)的期望能量处的特定光学跃迁,以减小相关联的一个驱动波形(DWk)的平均值。
    • 152. 发明申请
    • Electrophoretic display panel
    • 电泳显示面板
    • US20060139307A1
    • 2006-06-29
    • US10545062
    • 2004-01-29
    • Guofu ZhouMark JohnsonNeculai Ailenei
    • Guofu ZhouMark JohnsonNeculai Ailenei
    • G09G3/34
    • G09G3/344G09G2310/06G09G2310/068G09G2320/0233
    • The electrophoretic display panel (1), for displaying a picture, has drive means (100) which are arranged for controlling the potential difference of each picture element (2) to be a sequence of preset potential differences and subsequently to be a picture potential difference for enabling the particles (6) to occupy one of said positions for displaying the picture. Each preset potential difference represents a preset energy and has as a result a change of the position of the particles (6). For the display panel (1) to be able to display a picture of relatively high quality and to have relatively small changes in the appearances of picture elements (2) as a result of the sequences of preset potential differences even when the number of preset potential differences in the sequences is relatively small, the drive mean (100) are further arranged for controlling for each picture element (2) of at least a number of the picture elements (2) the preset energies of the preset potential differences in the sequence to depend on a serial number in the sequence to obtain for each preset potential difference in the sequence a substantially equal magnitude of the change of the position of the particles (6).
    • 用于显示图像的电泳显示面板(1)具有驱动装置(100),其被配置为将每个图像元素(2)的电位差控制为预设电位差序列,并且随后成为图像电位差 用于使颗粒(6)能够占据用于显示图像的所述位置之一。 每个预设电位差表示预设的能量,并且其结果是颗粒(6)的位置的改变。 为了使显示面板(1)能够显示相对高质量的图像,并且由于预置电位差的顺序,即使当预设电位的数量时,图像元素(2)的出现也具有相对小的变化 序列中的差异相对较小,驱动平均值(100)还被布置为用于控制至少数量的图像元素(2)的每个图像元素(2)的预设电势序列中的预设电位 取决于序列中的序列号以获得序列中的每个预设电位差,基本上等于粒子(6)的位置变化的大小。
    • 153. 发明申请
    • electrophoretic display panel
    • 电泳显示面板
    • US20060139306A1
    • 2006-06-29
    • US10543435
    • 2004-01-13
    • Mark JohnsonAlexander HenzenHugo CornelissenGuofu Zhou
    • Mark JohnsonAlexander HenzenHugo CornelissenGuofu Zhou
    • G09G3/34
    • G09G3/344G02F1/167G02F2201/12G09F9/37G09F9/372G09G3/3446G09G2320/0233G09G2320/029
    • The electrophoretic display panel (1) for displaying a picture corresponding to image information has drive means (100) which are able to control for each picture element (2) the potentials, thereby being able to change the position of the particles (6) based on the image information. Furthermore, the display panel (1) has monitoring means (101) which are able to generate for each picture element (2) actual position information indicative for the actual position of the particles (6), and control means (103) which are able to control for each picture element (2) the drive means (100) in dependence of the actual position information and the image information to reduce a difference between the position of the particles (6) and the position off the particles (6) corresponding to the image information. For the display panel (1) to be able to provide a picture of relatively high quality even at relatively low or nonuniform intensities of the ambient light, the monitoring means (101) comprise electrical means (102) which are able to generate for each picture element (2) the actual position information based on an electrical property of the respective picture element (2).
    • 用于显示与图像信息相对应的图像的电泳显示面板(1)具有驱动装置(100),其能够控制每个图像元素(2)的电位,从而能够基于粒子(6)的位置改变 对图像信息。 此外,显示面板(1)具有能够为每个图像元素(2)生成指示粒子(6)的实际位置的实际位置信息的监视装置(101),以及能够 根据实际位置信息和图像信息来控制每个图像元素(2)驱动装置(100),以减少颗粒(6)的位置与离开颗粒(6)的位置之间的差异 图像信息。 对于显示面板(1)即使在环境光的相对较低或不均匀的强度下也能够提供相对高质量的图像,监视装置(101)包括能够为每个图像生成的电气装置(102) 元件(2)基于相应图像元素(2)的电气特性的实际位置信息。
    • 155. 发明申请
    • Electrophoretic display unit
    • 电泳显示单元
    • US20060119567A1
    • 2006-06-08
    • US10559357
    • 2004-06-03
    • Guofu ZhouMasaru YasuiNeculai AileneiMark Johnson
    • Guofu ZhouMasaru YasuiNeculai AileneiMark Johnson
    • G09G3/34
    • G09G3/344G09G3/2014G09G2300/08G09G2310/06G09G2320/02G09G2340/0428
    • Electrophoretic display units (1) are driven more flexibly by creating sequences of frame periods in which at least two frame periods of the sequence of frame periods have a different frame period duration and by selecting frame periods from a sequence of frame periods for providing driving pulses to the pixels (11). The number of possible gray values is increased, and the gray values can be generated more accurately. During the rest of the frame periods not chosen for driving the pixel (11), this pixel (11) keeps its gray value due to the bi-stable character. A frame period duration of a frame period is adapted by delaying a start of a next frame period. By supplying data-dependent signals having sections with a positive amplitude and with a negative amplitude, the net driving result is the difference between the sections with the positive and negative amplitudes, to further increase the number of possible gray values.
    • 电泳显示单元(1)通过创建帧周期的序列而被更灵活地驱动,其中帧周期序列的至少两个帧周期具有不同的帧周期持续时间,并且通过从用于提供驱动脉冲的帧周期序列中选择帧周期 到像素(11)。 可能的灰度值的数量增加,可以更准确地生成灰度值。 在未被选择用于驱动像素(11)的帧周期的其余部分期间,该像素(11)由于双稳态特性而保持其灰度值。 通过延迟下一帧周期的开始来适配帧周期的帧周期持续时间。 通过提供具有正幅度和负幅度的部分的数据相关信号,净驱动结果是具有正和负幅度的部分之间的差异,以进一步增加可能的灰度值的数量。
    • 160. 发明申请
    • Matrix display device with photosensitive element
    • 具有感光元件的矩阵显示装置
    • US20060038751A1
    • 2006-02-23
    • US10528493
    • 2003-08-08
    • Mark JohnsonAndrea Giraldo
    • Mark JohnsonAndrea Giraldo
    • G09G3/30
    • G09G3/3233G09G3/2014G09G3/3241G09G2300/0819G09G2300/0842G09G2300/0852G09G2300/088G09G2310/0251G09G2320/0261G09G2320/043G09G2320/045G09G2360/148
    • A matrix display device comprises an array of addressable pixels (10) each having a display element (20) and a control circuit for controlling the operation of the display element. The control circuit includes a charge storage capacitor (36) and a photosensitive device (40) coupled to the storage capacitor for regulating charge stored on the storage capacitor (36) in accordance with light falling on the photosensitive device (40). The control circuit further comprises means for independent voltage control (42) of a gate terminal of the photosensitive device (40), preferably a phototransistor. In this way a more efficient and flexible biasing of the phototransistor is possible. The means preferably comprise a second row line (42) being connected to the gate terminal of the photosensitive device (40). This additional line allows also the use of transistors of the same polarity for this type of pixel circuit, saving additional process masks (and costs). In addition, it becomes possible to use the phototransistor as a TFT switch. This dual function (phototransistor/TFT switch) enables the pixel circuit to provide additional features; for example duty-cycle techniques for motion blur compensation.
    • 矩阵显示装置包括每个具有显示元件(20)的可寻址像素阵列(10)和用于控制显示元件的操作的控制电路。 控制电路包括电荷存储电容器(36)和耦合到存储电容器的光敏器件(40),用于根据落在光敏器件(40)上的光来调节存储在存储电容器(36)上的电荷。 控制电路还包括用于光敏器件(40)的栅极端子的独立电压控制(42)的装置,优选光电晶体管。 以这种方式,光电晶体管的更有效和灵活的偏置是可能的。 该装置优选地包括连接到感光装置(40)的栅极端子的第二行线(42)。 这种额外的线还允许使用相同极性的晶体管用于这种类型的像素电路,从而节省额外的处理掩模(和成本)。 此外,可以使用光电晶体管作为TFT开关。 这种双功能(光电晶体管/ TFT开关)使像素电路能够提供额外的功能; 例如运动模糊补偿的占空比技术。