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    • 13. 发明申请
    • Electrophoretic display device and driving method
    • 电泳显示装置及驱动方法
    • US20060250348A1
    • 2006-11-09
    • US10557345
    • 2004-05-13
    • Guofu ZhouMark JohnsonNeculai Ailenei
    • Guofu ZhouMark JohnsonNeculai Ailenei
    • G09G3/34
    • G09G3/344G09G2300/08G09G2310/0262G09G2310/06G09G2310/061G09G2310/068G09G2320/0247
    • A display device (1) comprises two or more groups of display elements having electrophoretic particles (8,9), a pixel electrode (5) and a counter electrode (6). Drive signals (50, (V,t)drive, (V,t)reset) are supplied to the electrodes to bring the display elements in a predetermined optical state. The drive signals are preceded by preset signals (53, (V,t)preset) to release the electrophoretic particles but too low in intensity to enable the particles to change the optical state significantly. The preset signals supplied to the groups show differences in phase. This reduces flicker. The preset and drive signals are, in operation, so supplied that the phase of the preset pulse preceding the drive pulse is, in respect of the drive pulse, substantially the same for all groups. The combination of a drive and preceding preset pulse is then for the groups substantially the same, reducing grey level variations.
    • 显示装置(1)包括具有电泳粒子(8,9),像素电极(5)和对电极(6)的两组以上的显示元件组。 将驱动信号(50,(V,t)<驱动,(V,t) )提供给电极,使显示元件处于预定的光学状态。 驱动信号之前是预置信号(53,(V,t)<预设),以释放电泳粒子,但是强度太低,以致颗粒能够显着改变光学状态。 提供给组的预设信号显示相位差异。 这减少了闪烁。 预设和驱动信号在操作中被提供,使得驱动脉冲之前的预设脉冲的相位相对于驱动脉冲对于所有组基本相同。 那么驱动器和之前的预设脉冲的组合对于这些组基本相同,从而减少了灰度级的变化。
    • 15. 发明申请
    • Driving scheme for monochrome mode and transition method for monochrome-to-greyscale mode in bi-stable displays
    • 双稳态显示器中单色到灰度模式的单色模式和转换方法的驱动方案
    • US20060290652A1
    • 2006-12-28
    • US10573548
    • 2004-09-24
    • Guofu ZhouJan van de KamerMark JohnsonNeculai Ailenei
    • Guofu ZhouJan van de KamerMark JohnsonNeculai Ailenei
    • G09G3/34
    • G09G3/344G09G3/2014G09G2310/06G09G2310/061G09G2310/068G09G2320/0204
    • Image quality is improved when updating a display image (310) in a bi-stable electronic reading device (300, 400) such as one using an electrophoretic display, by providing both monochrome and greyscale images. When an update mode of a pixel (2) of the display changes from a monochrome to greyscale, a compensating pulse (805, 825, 845, 865) is applied. The compensating pulse represents an energy based on the energy difference between: (a) an over-reset pulse (815, 835, 855, 875) used during the greyscale update mode and (b) a standard reset pulse (610, 660) used during the monochrome update mode. Also, a monochrome update waveform (600, 650) includes a standard reset pulse (610, 660) whose duration is substantially less than a duration of an over-reset pulse (815, 835, 855, 875) used in a greyscale update waveform (800, 820, 840 and 860). The monochrome update mode is used in combination with the greyscale update mode when possible.
    • 通过提供单色和灰度图像,在使用电泳显示器的双稳态电子读取装置(300,400)中更新显示图像(310)时,图像质量得到改善。 当显示器的像素(2)的更新模式从单色变为灰度时,应用补偿脉冲(805,825,845,865)。 补偿脉冲表示基于以下之间的能量差的能量:(a)在灰度级更新模式期间使用的过度复位脉冲(815,835,855,875)和(b)使用的标准复位脉冲(610,660) 在单色更新模式下。 此外,单色更新波形(600,650)包括标准复位脉冲(610,660),其持续时间基本上小于在灰度更新波形中使用的过度复位脉冲(815,835,855,875)的持续时间 (800,820,840和860)。 单色更新模式可以与灰度更新模式结合使用。
    • 17. 发明申请
    • Display device
    • 显示设备
    • US20060187187A1
    • 2006-08-24
    • US10562544
    • 2004-06-30
    • Mark JohnsonGuofu ZhouNeculai Ailenei
    • Mark JohnsonGuofu ZhouNeculai Ailenei
    • G09G3/34
    • G09G3/344G09G2300/0842G09G2310/0205G09G2310/06G09G2310/068G09G2320/0233G09G2320/0626
    • A display device comprising electrophoretic particles, a display element comprising a pixel electrode and a counter electrode between which a portion of the electrophoretic particles are present, and control means for supplying a drive signal to the electrodes to bring the display element in a predetermined optical state corresponding to the image information to be displayed, characterized in that control means are 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 first optical state, but too low to enable the particles to reach a second position near the other electrode corresponding to a second optical state, and in that the control means are further arranged for supplying the preset signal, in anticipation of or upon receipt of a power-up or image change operation.
    • 一种包括电泳颗粒的显示装置,包括像素电极的显示元件和存在一部分电泳颗粒的对电极,以及用于向电极提供驱动信号以使显示元件处于预定光学状态的控制装置 对应于要显示的图像信息,其特征在于,控制装置还被布置用于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设脉冲,以在两个电极中的一个附近的第一位置处释放电泳粒子对应 但是太低以致不能使颗粒到达对应于第二光学状态的另一个电极附近的第二位置,并且控制装置进一步布置成预期或在接收时提供预设信号 上电或图像更改操作。
    • 18. 发明申请
    • Electrophoretic display unit
    • 电泳显示单元
    • US20060170647A1
    • 2006-08-03
    • US10564531
    • 2004-07-07
    • Guofu ZhouJohannes Van De KamerNeculai AileneiMark Johnson
    • Guofu ZhouJohannes Van De KamerNeculai AileneiMark Johnson
    • G09G3/34
    • G09G3/344G09G2300/08G09G2310/04G09G2310/061G09G2330/021
    • Electophoretic display units (1) are driven with a relatively low amount of power and more efficiently by addressing the pixels (11) only once during a sequence of frame periods. Compared to addressing a pixel (11) each frame period, for signals having a duration of more than one frame period, a large amount of power is saved. During a sequence of frame periods formed by a time-interval (T1-T8), one or more reset pulses (R) or one or more driving pulses (Dr) are provided. The addressing of a line of pixels (11) can be skipped during a sequence of frame periods if all pixels (11) of the line of pixels (11) have to remain unchanged. Signals having a duration of two or more frame periods do not need to be supplied to the pixels (11) each frame period, but need to be supplied only once by addressing the pixels (11) only once during a sequence of frame periods.
    • 通过在帧周期的序列期间仅对像素(11)进行寻址一次,以较低的功率量来驱动电泳显示单元(1)。 与每帧周期的像素(11)寻址相比,对于具有多于一个帧周期的持续时间的信号,节省了大量的功率。 在由时间间隔(T 1 -T 8 N)形成的帧周期序列期间,一个或多个复位脉冲(R)或一个或多个驱动脉冲(Dr )。 如果像素行(11)的所有像素(11)必须保持不变,则可以在帧周期的序列期间跳过像素线(11)的寻址。 具有两个或更多个帧周期的持续时间的信号不需要在每个帧周期中被提供给像素(11),而是需要在帧周期序列期间仅对像素(11)寻址一次来提供一次。
    • 19. 发明申请
    • Electrophoretic display unit
    • 电泳显示单元
    • US20060158572A1
    • 2006-07-20
    • US10563930
    • 2004-07-05
    • Guofu ZhouNeculai AileneiMasaru YasuiMark Johnson
    • Guofu ZhouNeculai AileneiMasaru YasuiMark Johnson
    • G02F1/13
    • G09G3/344G09G3/2018G09G2300/08G09G2310/068
    • Electrophoretic display units (1) having fixed frame times are driven relatively unflexibly. By introducing line driving signals having timing parameters, the frame rates can be made variable. With variable frame rates, the optical disturbance from shaking pulses (Sh) is reduced and the number of gray values is increased. The timing parameters comprise delays of starts of line driving signals and/or comprise durations of line driving signals. The lines preferably comprise rows. All possible column driving signals and, per column driving signal or per frame, a row delay parameter defining a row delay time, are stored in a memory coupled to the controller (20). Shaking pulses (Sh) are supplied at minimum row delay time, reset pulses (R) are supplied at maximum row delay time, and driving pulses (Dr) are supplied at flexible row delay time, which corresponds with a product of a predefined timeinterval and a step value defined by a number of bits.
    • 具有固定帧时间的电泳显示单元(1)相对不灵活地被驱动。 通过引入具有定时参数的线路驱动信号,可以使帧速率可变。 具有可变帧速率,来自抖动脉冲(Sh)的光学干扰减小,灰度值增加。 定时参数包括线路驱动信号的起始延迟和/或包括线路驱动信号的持续时间。 线优选地包括行。 所有可能的列驱动信号以及每列驱动信号或每帧的定义行延迟时间的行延迟参数被存储在耦合到控制器(20)的存储器中。 以最小行延迟时间提供抖动脉冲(Sh),以最大行延迟时间提供复位脉冲(R),并且以灵活的行延迟时间提供驱动脉冲(Dr),其对应于预定时间间隔和 由多个位定义的步长值。
    • 20. 发明申请
    • Method of compensating temperature dependence of driving schemes for electrophoretic displays
    • 补偿电泳显示器驱动方案温度依赖性的方法
    • US20060291122A1
    • 2006-12-28
    • US10571327
    • 2004-09-09
    • Guofu ZhouRoger CortieMark JohnsonJan Kamer
    • Guofu ZhouRoger CortieMark JohnsonJan Kamer
    • H02H5/04
    • G09G3/344G09G3/2011G09G3/2014G09G3/2081G09G2310/061G09G2310/068G09G2320/041
    • An image is updated on a bi-stable display (310) such as an electrophoretic display by providing separate scaling functions (SF1, SF2) for scaling a duration of a reset pulse (R) and a duration of a driving pulse (D) in a drive waveform based on temperature (335). An absolute value of a slope with varying temperatures of the scaling factor (SF 1) for the reset pulse (R) is significantly greater than that of the scaling factor (SF2) for the driving pulse (D), while both scaling factors increase with decreasing temperature. Image update time (IUT) is significantly reduced at lower temperatures, while a range of variation of IUT across all temperatures is also reduced. Scaling functions (SF3, SF4) may also be used for scaling a duration of a help reset pulse (H) and/or a duration of one or more shaking pulses (SH1, SH2).
    • 通过提供用于缩放复位脉冲(R)的持续时间和驱动脉冲(D)的持续时间的分开的缩放函数(SF 1,SF 2),在诸如电泳显示器的双稳态显示器(310)上更新图像 )在基于温度的驱动波形(335)中。 对于复位脉冲(R),具有变化温度的比例因子(SF 1)的斜率的绝对值明显大于驱动脉冲(D)的缩放因子(SF 2)的绝对值,而两个缩放因子增加 随着温度的降低。 图像更新时间(IUT)在较低温度下显着降低,而IUT在所有温度下的变化范围也会降低。 缩放功能(SF 3,SF 4)也可用于缩放帮助复位脉冲(H)的持续时间和/或一个或多个抖动脉冲(SH 1,SH 2)的持续时间。