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41. 发明申请

US20070080927A1 Crosstalk compensation in an electrophoretic display 审中-公开
标题翻译：电泳显示中的串扰补偿
公开(公告)号：US20070080927A1
公开(公告)日：2007-04-12
申请号：US10579308
申请日：2004-11-16
申请人： Guofu Zhou , Johannes Van De Kamer , Mark Johnson
发明人： Guofu Zhou , Johannes Van De Kamer , Mark Johnson
IPC分类号： G09G3/34
CPC分类号： G09G3/344 , G09G2310/06 , G09G2310/061 , G09G2320/0209
摘要： An electrophoretic display device comprising charged particles in a fluid between two electrodes. Drive means supply the electrodes with drive waveforms in order to cause the charged particles to occupy a desired optical state according to an image to be displayed. In the case where a pixel is required to remain in the same optical state during an image update sequence, at least one voltage pulse is provided at or near the end of the drive signal to compensate for the effect of crosstalk by drawing the charged particles back to the optical state in which the respective picture element is required to remain during that image update sequence.
摘要翻译：一种电泳显示装置，其包括在两个电极之间的流体中的带电粒子。驱动装置为电极提供驱动波形，以根据要显示的图像使带电粒子占据期望的光学状态。在像素需要在图像更新序列期间保持相同的光学状态的情况下，在驱动信号的末端或其附近提供至少一个电压脉冲，以通过将带电粒子拉回来来补偿串扰的影响到在该图像更新序列期间需要保留各个像素的光学状态。

42. 发明申请

US20070080926A1 Method and apparatus for driving an electrophoretic display device with reduced image retention 审中-公开
标题翻译：用于驱动具有降低的图像保持性的电泳显示装置的方法和装置
公开(公告)号：US20070080926A1
公开(公告)日：2007-04-12
申请号：US10579306
申请日：2004-11-18
申请人： Guofu Zhou , Mark Johnson
发明人： Guofu Zhou , Mark Johnson
IPC分类号： G09G3/34
CPC分类号： G09G3/344 , G09G2310/061 , G09G2310/068 , G09G2320/02 , G09G2320/0209 , G09G2320/0257
摘要： A method and apparatus for driving an electrophoretic display device with reduced image retention. Image transitions in respect of all pixels are performed during each image update, irrespective of whether the optical state of a pixel is required to change or not. Thus, pixels without substantial optical state change between a first image update period and a subsequent image update period are forced to update during the subsequent image update period. The drive waveforms, in particular those to be applied for updating pixels without substantial optical state change, are preferably configured such that the net DC voltage is substantially zero after every single image transition.
摘要翻译：一种用于驱动具有降低的图像保持性的电泳显示装置的方法和装置。在每个图像更新期间执行关于所有像素的图像转换，而不管像素的光学状态是否需要改变。因此，在随后的图像更新周期期间强制在第一图像更新周期和后续图像更新周期之间没有实质光学状态改变的像素更新。优选地，驱动波形，特别是用于更新不具有实质光学状态变化的像素的驱动波形被配置为使得每个单个图像转换之后的净直流电压基本为零。

43. 发明申请

US20070075962A1 Electrophoretic display with reduced look-up-table memeory 审中-公开
标题翻译：电泳显示与减少查找表的memeory
公开(公告)号：US20070075962A1
公开(公告)日：2007-04-05
申请号：US10571804
申请日：2004-09-15
申请人： Guofu Zhou , Jan Van De Kamer , Mark Johnson
发明人： Guofu Zhou , Jan Van De Kamer , Mark Johnson
IPC分类号： G09G3/34
CPC分类号： G09G3/344 , G09G3/2011 , G09G3/2014 , G09G3/2081 , G09G2300/08 , G09G2310/06 , G09G2310/061 , G09G2310/08 , G09G2320/041
摘要： An display device (301) has reduced memory (314) requirements for temperature compensation data. A scaling factors (433) for various temperatures and a look-up table for a waveform which is optimized to drive the grayscale for a given display temperature are stored in memory (314). The waveform for a particular temperature of the display (301) is derived from the look-up table and scaling factors (433). At some temperatures, only certain parts of the waveform need be varied, and only these parts require accurate scaling from the look-up table.
摘要翻译：显示装置（301）对于温度补偿数据的存储器（314）需求减少。用于各种温度的缩放因子（433）和用于为给定显示温度驱动灰度的波形的查找表被存储在存储器（314）中。用于显示器（301）的特定温度的波形从查找表和缩放因子（433）导出。在某些温度下，仅波形的某些部分需要改变，只有这些部分需要从查找表进行精确的缩放。

44. 发明申请

US20070064302A1 Fast full color electrophoretic display with improved driving 有权
标题翻译：快速全彩色电泳显示，改进驾驶
公开(公告)号：US20070064302A1
公开(公告)日：2007-03-22
申请号：US10576319
申请日：2004-10-13
申请人： Mark Johnson , Lucas Schlangen , Patrick Baesjou , Guofu Zhou
发明人： Mark Johnson , Lucas Schlangen , Patrick Baesjou , Guofu Zhou
IPC分类号： G02B26/00
CPC分类号： G09G3/3446 , G02F1/167 , G02F2001/1678 , G09G2320/0252
摘要： The present invention provides a novel design for color electrophoretic displays. In the display, each pixel (200) comprises at least two sub-pixels (210, 220, 230), and each sub pixel is fitted with a color filter (211, 221, 231) and contains an electrophoretic media comprising two particle types (201, 202, 203). The color filters (211, 221, 231) in the sub-pixels of each pixel have essentially non-overlapping absorption bands, and together cover essentially all of the wavelengths over which the display is operative. Furthermore, the absorption bands of the particles in each sub-pixel (210, 220, 230) each cover a portion of the wavelengths that is not covered by the filter (211, 221, 231) in the respective sub-pixel. The wavelength bands typically correspond to different colors. Thereby each wavelength band, or color, can be emitted by more than one sub-pixel in each pixel, resulting in increased brightness. According to one particular embodiment, each pixel comprises three sub-pixels having a cyan, magenta, and yellow absorbing filter, respectively.
摘要翻译：本发明提供了彩色电泳显示器的新颖设计。在显示器中，每个像素（200）包括至少两个子像素（210,220,230），并且每个子像素装配有滤色器（211,221,231），并且包含包含两个粒子类型的电泳介质（201,202,203）。每个像素的子像素中的滤色器（211,221,231）具有基本上不重叠的吸收带，并且一起覆盖显示器可操作的基本上所有的波长。此外，每个子像素（210,220,230）中的颗粒的吸收带各自覆盖相应子像素中未被滤光器（211,221,231）覆盖的一部分波长。波长带通常对应于不同的颜色。因此，每个波长带或颜色可以由每个像素中的多于一个子像素发射，导致增加的亮度。根据一个具体实施例，每个像素分别包括具有青色，品红色和黄色吸收滤光器的三个子像素。

45. 发明申请

US20070057905A1 Electrophoretic display activation with blanking frames 审中-公开
标题翻译：带消隐框架的电泳显示激活
公开(公告)号：US20070057905A1
公开(公告)日：2007-03-15
申请号：US10570845
申请日：2004-08-30
申请人： Mark Johnson , Guofu Zhou , Jan Kamer
发明人： Mark Johnson , Guofu Zhou , Jan Kamer
IPC分类号： G09G3/34
CPC分类号： G09G3/344 , G09G3/2007 , G09G3/2018 , G09G2300/08 , G09G2310/02 , G09G2310/061 , G09G2310/068 , G09G2320/02 , G09G2320/0233 , G09G2380/02
摘要： A system implements a method of activating an electrophoretic display (10). First, the system provides at least one image-dependent data frame (70) including pixel data (72) and a data frame time (74). Second, the system determines a blanking frame (80) including a blanking frame time (84) based on the data frame time. Third, the system addresses the electrophoretic display (10) based on the pixel data (72), the data frame time (74), and the blanking frame (80) to reduce vertical crosstalk.
摘要翻译：系统实现激活电泳显示器的方法（10）。首先，系统提供包括像素数据（72）和数据帧时间（74）的至少一个图像相关数据帧（70）。其次，系统基于数据帧时间确定包括消隐帧时间（84）的消隐帧（80）。第三，系统基于像素数据（72），数据帧时间（74）和消隐帧（80）来解决电泳显示器（10），以减少垂直串扰。

46. 发明申请

US20070052665A1 Driving scheme for an electrophoretic display 有权
标题翻译：电泳显示器的驱动方案
公开(公告)号：US20070052665A1
公开(公告)日：2007-03-08
申请号：US10557683
申请日：2004-05-17
申请人： Guofu Zhou , Mark Johnson
发明人： Guofu Zhou , Mark Johnson
IPC分类号： G09G3/34
CPC分类号： G09G3/344 , G09G2300/08 , G09G2310/06 , G09G2310/068 , G09G2320/02 , G09G2320/041
摘要： A display device (1) has electrophoretic particles (8, 9), a display element including electrodes (5, 6), between which a portion of the electrophoretic particles (8, 9) is present, a temperature sensor (25) and a processor (15) for supplying a driving pulse (32) to the electrodes (5, 6) to bring the display element to a predetermined black, gray or white state, corresponding to the image information to be displayed. For improved grayscale accuracy and optimal picture and text quality, the processor (15) is further arranged to supply pre-pulses (31) preceding the driving pulses (32). The energy of the pre-pulses (31) is increased with increased temperature measured by the temperature sensor (25) and is sufficient to release the electrophoretic particles at a first position near one of the two electrodes (5, 6), but too low to enable the particles to reach a second position near the other electrode (5 or 6).
摘要翻译：显示装置（1）具有电泳粒子（8,9），包括电极（5,6）的显示元件，其间存在电泳颗粒（8,9）的一部分，温度传感器（25）和处理器（15），用于向电极（5,6）提供驱动脉冲（32），以使显示元件达到预定的黑色，灰色或白色状态，与要显示的图像信息相对应。为了改善灰度精度和最佳图像和文本质量，处理器（15）还被布置成提供在驱动脉冲（32）之前的预脉冲（31）。预脉冲（31）的能量随温度传感器（25）测量的温度升高而增加，足以在两个电极（5,6）附近的第一位置释放电泳粒子，但是太低以使颗粒能够到达另一电极（5或6）附近的第二位置。

47. 发明申请

US20070018944A1 Electrophoretic display panel 审中-公开
标题翻译：电泳显示面板
公开(公告)号：US20070018944A1
公开(公告)日：2007-01-25
申请号：US10564418
申请日：2004-07-09
申请人： Mark Johnson , Rogier Cortie , Guofu Zhou
发明人： Mark Johnson , Rogier Cortie , Guofu Zhou
IPC分类号： G09G3/34
CPC分类号： G09G3/344 , G09G2310/06 , G09G2310/061 , G09G2310/068
摘要： 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.
摘要翻译：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。

48. 发明申请

US20060291125A1 Driving method for an electrophoretic display with high frame rate and low peak power consumption 审中-公开
标题翻译：具有高帧速率和低峰值功耗的电泳显示器的驱动方法
公开(公告)号：US20060291125A1
公开(公告)日：2006-12-28
申请号：US10570843
申请日：2004-08-30
申请人： Guofu Zhou , Alex Henzen , Jan Kamer , Mark Johnson
发明人： Guofu Zhou , Alex Henzen , Jan Kamer , Mark Johnson
IPC分类号： H01H73/00
CPC分类号： G09G3/344 , G09G3/2018 , G09G2310/06 , G09G2310/061 , G09G2310/065 , G09G2310/068 , G09G2330/021
摘要： An image is updated on a bi-stable display (310) such as an electrophoretic display by using voltage waveforms (600, 620, 640, 660; 700, 720, 740, 760; 800, 820, 840, 860) that are configured such that voltage changes are constrained to a subset of possible voltage levels during specific frame times. The specific frame times may occur during datadependent portions of the waveforms, such as a reset portion (R) and/or a drive portion (D, D1, D2). Due to the reduced voltage swing, the supply voltage can be reduced, resulting in reduced power consumption. Moreover, the frame time (FT′) can be shortened during the data-dependent portions of the waveforms to increase the greyscale accuracy and number of grey levels. At other frames times, the voltage levels can vary throughout the full range of possible voltage levels, while a standard frame time (FT) is used.
摘要翻译：通过使用配置的电压波形（600,620,640,660,700,740,760,760,760,860,860）来更新在诸如电泳显示器的双稳态显示器（310）上的图像，使得电压变化被限制在特定帧时间期间可能的电压电平的子集。特定帧时间可以在波形的数据相关部分期间发生，诸如复位部分（R）和/或驱动部分（D，D 1，D 2）。由于电压摆幅降低，可以降低电源电压，从而降低功耗。此外，在波形的数据相关部分期间可以缩短帧时间（FT'），以增加灰度精度和灰度级数。在其他帧时间，电压电平可以在整个可能的电压电平范围内变化，而使用标准帧时间（FT）。

49. 发明申请

US20060290652A1 Driving scheme for monochrome mode and transition method for monochrome-to-greyscale mode in bi-stable displays 审中-公开
标题翻译：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
公开(公告)号：US20060290652A1
公开(公告)日：2006-12-28
申请号：US10573548
申请日：2004-09-24
申请人： Guofu Zhou , Jan van de Kamer , Mark Johnson , Neculai Ailenei
发明人： Guofu Zhou , Jan van de Kamer , Mark Johnson , Neculai Ailenei
IPC分类号： G09G3/34
CPC分类号： G09G3/344 , G09G3/2014 , G09G2310/06 , G09G2310/061 , G09G2310/068 , G09G2320/0204
摘要： 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.
摘要翻译：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。

50. 发明申请

US20060279526A1 Electrophoretic display unit 审中-公开
标题翻译：电泳显示单元
公开(公告)号：US20060279526A1
公开(公告)日：2006-12-14
申请号：US10564383
申请日：2004-07-06
申请人： Guofu Zhou , Masaru Yasui , Mark Johnson
发明人： Guofu Zhou , Masaru Yasui , Mark Johnson
IPC分类号： G09G3/34
CPC分类号： G09G3/344 , G09G3/2022 , G09G2300/08 , G09G2310/0275 , G09G2310/065 , G09G2330/021
摘要： Electrophoretic display units (1,100) are provided with switching circuits (50) to reduce the energy necessary for supplying data pulses (DP1, DP2) to pixels (11) via a data electrode (31,32,33,34). This energy is proportional to a differential voltage to be realised and to a capacitance (13) to be charged or discharged, which is formed by a combination of a capacitance of the pixel (11) and a capacitance of the active matrix. Due to this capacitance of the active matrix being much larger, a relatively large amount of energy is necessary. The switching circuit (50) couples the data electrode (31,32,33,34) to a voltage reference source (REF) like ground between two selection pulses (SP1, SP2) to be supplied sequentially to two respective pixels (11) coupled to the same data electrode (31,32,33,34). This reduces the amount of discharging to be realized by the data drivers (3). As a result, the maximum energy necessary is reduced. To reduce the power consumption of the entire electrophoretic display unit (1,100), this should be done preferably for data pulses (DPI, DP2) having amplitudes with opposite polarity only.
摘要翻译：电泳显示单元（1,100）设置有开关电路（50），以减少通过数据电极（31,32,33,34）向像素（11）提供数据脉冲（DP 1，DP 2）所需的能量。该能量与要实现的差分电压和通过像素（11）的电容和有源矩阵的电容的组合形成的要充电或放电的电容（13）成比例。由于有源矩阵的这种电容大得多，所以需要相对大量的能量。开关电路（50）将数据电极（31,32,33,34）耦合到两个选择脉冲（SP 1，SP 2）之间的类似接地的电压参考源（REF），以顺序地提供给两个相应的像素（11 ）耦合到相同的数据电极（31,32,33,34）。这减少了由数据驱动器（3）实现的放电量。结果，减少了所需的最大能量。为了降低整个电泳显示单元（1,100）的功耗，应优先对具有相反极性的幅度的数据脉冲（DPI，DP 2）进行优化。

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