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    • 1. 发明申请
    • Temperature compensation method for bi-stable display using drive sub-pulses
    • 使用驱动子脉冲进行双稳态显示的温度补偿方法
    • US20070052648A1
    • 2007-03-08
    • US10571830
    • 2004-09-01
    • Guofu ZhouMark JohnsonRogier Hendrikus Cortie
    • Guofu ZhouMark JohnsonRogier Hendrikus Cortie
    • G09G3/36
    • G09G3/344G09G2300/08G09G2310/061G09G2310/065G09G2310/068G09G2320/041
    • 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 temperature sensing circuit senses the temperature of the display. 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 pulses (SPk), wherein consecutive ones of the pulses (SPk) of the sequence are separated by a non-zero separation period of time (SPT), during which period a voltage level is supplied which substantially keeps an optical state of the particular one of the pixels (Pij) unaltered. 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 the temperature sensed.
    • 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。 温度检测电路检测显示器的温度。 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),其中序列的脉冲(SPk)中的连续的一个被非零分离时间段(SPT)隔开, 在此期间提供基本上保持特定像素(Pij)的光学状态不变的电压电平。 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/或相关联的驱动波形(DWk)的分离周期(SPT)的持续时间以获得 在感测温度下的特定光学转变。
    • 2. 发明申请
    • Electrophoretic display device
    • 电泳显示装置
    • US20060262081A1
    • 2006-11-23
    • US10555265
    • 2004-05-03
    • Guofu ZhouPeter DuineRogier Hendrikus CortieMark Johnson
    • Guofu ZhouPeter DuineRogier Hendrikus CortieMark Johnson
    • G09G3/34
    • G09G3/344G09G2300/08G09G2300/0842G09G2310/0254G09G2310/06G09G2310/068G09G2320/0204G09G2320/0247
    • A display device comprises electrophoretic particles, a display element comprising a pixel electrode and a counter electrode between which a portion of the electrophoretic particles are present and a controller for supplying a drive signal to the electrodes to bring the display element in a predetermined black or white state, corresponding to the image information to be displayed. In order to improve the refresh time of the display, the controller is further arranged for supplying a preset signal preceding the drive signal comprising a preset pulse having an energy sufficient to release the electrophoretic particles at a first position near one of the two electrodes corresponding to a black state, but too low to enable the particles to reach a second position near the other electrode corresponding to a white state. The duration of the preset pulses is less than 19 msec, preferably between 1 and 10 msec. Setting the duration of the preset pulses to less than 19 msec reduced visible flicker F.
    • 显示装置包括电泳粒子,显示元件包括像素电极和相对电极,在该对电极之间存在电泳颗粒的一部分,以及用于向电极提供驱动信号以使显示元件处于预定的黑色或白色的控制器 状态,对应于要显示的图像信息。 为了提高显示器的刷新时间,控制器进一步被布置为提供驱动信号之前的预设信号,该预设信号包括具有足够的能量的预置脉冲,以将电泳颗粒释放在对应于两个电极的两个电极之一附近的第一位置 黑色状态,但是太低,不能使颗粒到达对应于白色状态的另一个电极附近的第二位置。 预设脉冲的持续时间小于19毫秒,优选在1和10毫秒之间。 将预设脉冲的持续时间设置为小于19毫秒,减少可见闪烁F.