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    • 1. 发明申请
    • Rail-Stabilized Driving Scheme With Image Memory For An Electrophoretic Display
    • 轨迹稳定驱动方案与电泳显示的图像存储器
    • US20070273637A1
    • 2007-11-29
    • US10599058
    • 2005-03-22
    • Guofu ZhouRogier CortieMark JohnsonLeendert Hage
    • Guofu ZhouRogier CortieMark JohnsonLeendert Hage
    • G09G3/34
    • G09G3/344G09G3/2007G09G2310/0245G09G2310/061G09G2310/068G09G2340/16
    • An image is updated on a bi-stable display (310) such as an electrophoretic display in a transition from a current image state to a subsequent image state. A voltage waveform (600, 620, 640, 660; 700, 720, 740, 760) is selected based on the current and subsequent image states, and a previous image state. The bi-stable display (310) is driven from the current image state to the subsequent image state using the selected voltage waveform. For a given transition from the current to the next image state, different waveforms are stored for different previous states, e.g., black, dark grey, light grey and white. The different waveforms may have different drive pulse (DR) or reset pulse (RE1, RE2) energies. In a trial and error optimization process, different waveforms with different reset and/or drive pulse energies are tested for different previous image states to see which waveform yields the smallest greyscale error.
    • 在从当前图像状态到后续图像状态的转变中,在双稳态显示器(310)上更新图像,例如电泳显示器。 基于当前和后续图像状态以及先前的图像状态来选择电压波形(600,620,640,660,700,720,740,760)。 使用所选择的电压波形,双稳态显示器(310)从当前图像状态驱动到后续图像状态。 对于从当前图像状态到下一图像状态的给定转换,存储不同的先前状态的不同波形,例如黑色,深灰色,浅灰色和白色。 不同的波形可能具有不同的驱动脉冲(DR)或复位脉冲(RE 1,RE 2)能量。 在试错误优化过程中,针对不同的先前图像状态测试具有不同复位和/或驱动脉冲能量的不同波形,以查看哪个波形产生最小的灰度误差。
    • 3. 发明申请
    • Electrophoretic display panel
    • 电泳显示面板
    • US20070018944A1
    • 2007-01-25
    • US10564418
    • 2004-07-09
    • Mark JohnsonRogier CortieGuofu Zhou
    • Mark JohnsonRogier CortieGuofu Zhou
    • G09G3/34
    • G09G3/344G09G2310/06G09G2310/061G09G2310/068
    • This invention relates to an electrophoretic display panel (1), for displaying a picture corresponding to image information, comprising a plurality of pixels (2), each containing an amount of an electrophoretic material comprising a first and a second type of particles (6, 7), having mutually different charges, being dispersed in a fluid, a first and a second electrode (8, 9) associated with each pixel (4) for receiving a potential difference as defined by an update drive waveform; and drive means (10), for controlling said update drive waveform of each pixel (4); said update drive waveform comprising a reset portion (R), during which a reset signal is applied over the pixel, and subsequently a driving portion (D), during which a picture potential difference is applied over the pixel for enabling the particles (6, 7) to occupy the position corresponding to the image information. The invention is characterised in that said reset portion (R) of the update drive waveform is configured so that the first and second types of particles (6,7) are brought in close proximity with each other during said reset portion (R) of the update waveform.
    • 本发明涉及一种用于显示与图像信息相对应的图像的电泳显示面板(1),其包括多个像素(2),每个像素包含一定量的电泳材料,其包含第一和第二类型的颗粒(6, 7),具有相互不同的电荷,分散在流体中,与每个像素(4)相关联的第一和第二电极(8,9),用于接收由更新驱动波形定义的电位差; 和驱动装置(10),用于控制每个像素(4)的所述更新驱动波形; 所述更新驱动波形包括复位部分(R),在所述复位部分(R)期间,复位信号施加在所述像素上,以及随后的驱动部分(D),在所述驱动部分(D)期间,在所述像素上施加图像电位差以使所述粒子(6, 7)占据对应于图像信息的位置。 本发明的特征在于,所述更新驱动波形的所述复位部分(R)被配置为使得所述更新驱动波形的所述复位部分(R)在所述复位部分(R)期间使所述第一和第二类型的粒子(6,7)彼此靠近 更新波形。
    • 9. 发明申请
    • Electrophoretic Display with Reduced Cross Talk
    • 电泳显示与减少交谈
    • US20070212022A1
    • 2007-09-13
    • US10599256
    • 2005-03-29
    • Guofu ZhouJan Van de KamerMark Johnson
    • Guofu ZhouJan Van de KamerMark Johnson
    • H04N5/91
    • G09G3/344G09G3/2014G09G3/2051G09G2300/08G09G2310/06G09G2310/065G09G2320/0209G09G2320/041
    • A technique for driving a bi-stable display (310) such as an electrophoretic display with reduced cross talk, including reduced image retention and dithering ghosting. Drive waveforms are aligned so that, during an image update period, image transitions (500, 600, 700, 800, 900) between substantially similar optical states (e.g., black-to-black) are terminated substantially later than image transitions (520, 620, 720, 920) between substantially different optical states (e.g., black-to-white). Additionally, a drive pulse in the waveforms for the transitions between the similar states compensates for cross talk caused by a drive pulse in the waveforms for the transitions between the different states. The waveforms include at least one extreme drive pulse (ED, ED1, ED2, ED3) and an additional pulse (A) of opposite polarity.
    • 一种用于驱动具有减少的串扰的电泳显示器的双稳态显示器(310)的技术,包括减少的图像保持和抖动重影。 驱动波形被对准,使得在图像更新周期期间,在基本上相似的光学状态(例如,黑色至黑色)之间的图像转换(500,600,700,800,900)在图像转换(520, 620,720,920)在基本上不同的光学状态之间(例如,黑色至白色)。 此外,用于类似状态之间的转换的波形中的驱动脉冲补偿由不同状态之间的转换的波形中的驱动脉冲引起的串扰。 这些波形包括至少一个极性驱动脉冲(ED,ED 1,ED 2,ED 3)和相反极性的附加脉冲(A)。
    • 10. 发明申请
    • Display apparatus with a display device and a rail-stabilized method of driving the display device
    • 具有显示装置的显示装置和用于驱动显示装置的轨道稳定方法
    • US20070146561A1
    • 2007-06-28
    • US10580057
    • 2004-11-16
    • Guofu ZhouMark Johnson
    • Guofu ZhouMark Johnson
    • G02F1/13
    • G09G3/344G09G3/2011G09G3/2014G09G2310/061G09G2320/0204
    • A cyclic rail-stabilized method of driving an electrophoretic display device (1), wherein a substantially dc-balanced waveform is used to effect various required optical transitions. The driving waveform consists of a sequence of picture potential differences, which cause the charged particles of the electrophoretic display device (1) to move cyclically between extreme optical positions in a single path, irrespective of the image sequence required to be displayed, except in the case where the desired optical transition is from an intermediate position (or grey scale) to the extreme optical position (or rail state) closest to that intermediate position, in which case the optical transition is effected substantially directly by means of a single voltage pulse (20) which is substantially equal in amplitude and duration, but of opposite polarity, to the voltage pulse (30) required to effect an original optical transition from the rail state to that grey scale.
    • 一种用于驱动电泳显示装置(1)的循环轨道稳定方法,其中使用基本上直流平衡的波形来实现各种所需的光学转换。 驱动波形包括一系列图象电位差,使电泳显示装置(1)的带电粒子在单一路径中的极端光学位置之间循环移动,而不管所需的图像序列如何,除了 其中期望的光学转变是从中间位置(或灰度级)到最接近该中间位置的极端光学位置(或轨道状态)的情况,在这种情况下,光学跃迁基本上直接通过单个电压脉冲 20),其幅度和持续时间基本相等,但是与实现从轨道状态到该灰度级的原始光学转换所需的电压脉冲(30)相反。