Method and apparatus for improving brightness in an electrophoretic display
    32.
    发明申请
    Method and apparatus for improving brightness in an electrophoretic display 审中-公开
    用于提高电泳显示器亮度的方法和装置

    公开(公告)号:US20070070029A1

    公开(公告)日:2007-03-29

    申请号:US10579313

    申请日:2004-11-11

    IPC分类号: G09G3/34

    摘要: An electrophoretic display (1) comprising an electrophoretic medium (5) comprising a plurality of negatively charged black particles (6) and a plurality of positively charged white particles (6) in fluid. The average dc value of the drive voltages is arranged to be non-zero, so as to maximise brightness or contrast ratio of the displayed image, as required. If the average dc value of the drive voltages has a positive polarity, such that a small positive voltage is applied to the pixel electrode (3), although the white level may be less bright, the black level becomes darker, thereby increasing the contrast ratio during the driving sequence, which is obviously advantageous if the contrast ratio is the most important display parameter. If, on the other hand, maintaining or increasing a maximum brightness level is of key importance, then a drive sequence where the average dc value of all drive waveforms has a negative polarity is applied, so as to apply a small, controlled negative voltage to the pixel electrode (3). In this case, although the black level may become less dark, the white level becomes significantly brighter, such that the brightness is increased during the driving sequence, which is obviously advantageous if brightness is the most important display parameter.

    摘要翻译: 一种电泳显示器(1),包括电泳介质(5),其包括多个带负电荷的黑色颗粒(6)和多个带正电荷的白色颗粒(6)。 驱动电压的平均直流值被布置为非零,以便根据需要使显示图像的亮度或对比度最大化。 如果驱动电压的平均直流值具有正极性,使得对像素电极(3)施加小的正电压,尽管白电平可能不太亮,但是黑电平变得更暗,从而增加对比度 在驱动顺序期间,如果对比度是最重要的显示参数,这显然是有利的。 另一方面,如果保持或增加最大亮度水平是至关重要的,则施加所有驱动波形的平均直流值为负极性的驱动序列,以便将小的受控负电压施加到 像素电极(3)。 在这种情况下,尽管黑色电平可能变得较暗,但白色电平变得明显更亮,使得在驱动序列期间亮度增加,如果亮度是最重要的显示参数,这显然是有利的。

    Electrophoretic display unit
    33.
    发明申请
    Electrophoretic display unit 有权
    电泳显示单元

    公开(公告)号:US20070013683A1

    公开(公告)日:2007-01-18

    申请号:US10574146

    申请日:2004-09-27

    IPC分类号: G09G5/00

    摘要: Electrophoretic display units (1) comprising pixels (11) situated between common electrodes (6) and pixel electrodes (5) need, for shortening the total image update times, increased driving voltages across the pixels (11) which endanger transistors (12) coupled to the pixel electrodes (5). These increased driving voltage (V6) to the common electrode (6). To protect the transistors (12) against these increased driving voltages, a setting signal (S1, S2) is supplied to the pixel electrode (5) via the transistor (12) for reducing a voltage across the pixel (11) resulting from a transition in the alternating voltage signal (V6). During driving frame periods (Fd) data pulses (D1, D2, D3, D4, D5, D6) are supplied, and during setting frame periods (Fs), the setting signals (S1, S2) are supplied.

    摘要翻译: 包括位于公共电极(6)和像素电极(5)之间的像素(11)的电泳显示单元(1)需要用于缩短总的图像更新时间,跨越像素(11)的增加的驱动电压,其使得耦合的晶体管(12) 到像素电极(5)。 这些增加到公共电极(6)的驱动电压(V 6 S)。 为了保护晶体管(12)免受这些增加的驱动电压的影响,经由晶体管(5)向像素电极(5)提供设置信号(S 1,S 2 2) 12),用于降低由交流电压信号(V 6> 6)中的转变导致的像素(11)两端的电压。 在驱动帧周期(F SUB)期间,数据脉冲(D 1,D 2,D 3,D 3,D 3, 提供SUB> 4 D <5>,D 6>),并且在设定帧周期(F S)期间,设置 提供信号(S 1,S 2)。

    Electrophoretic display panel
    34.
    发明申请
    Electrophoretic display panel 审中-公开
    电泳显示面板

    公开(公告)号:US20060244713A1

    公开(公告)日:2006-11-02

    申请号:US10558735

    申请日:2004-05-19

    IPC分类号: G09G3/34

    摘要: The electrophoretic display panel (1) for displaying a picture has a plurality of pixels (2) and drive means (100). Each pixel (2) has two electrodes (3, 4) for receiving a potential difference and charged particles (6) capable of occupying a number of different positions between the electrodes (3, 4). The drive means (100) are able to supply a sequence of potential difference pulses to each pixel (2), each sequence having, to display the picture, a picture pulse for bringing the particles (6) into one of the positions. For the display panel (1) to be able to display a picture of at least relatively medium quality even shortly after the application of the sequences, with respect to at least a number of the pixels (2) having received picture pulses for bringing their particles (6) into extreme positions, the sequence of each pixel (2) out of said number has an additional picture pulse subsequent to the picture pulse, which additional picture pulse serves to prevent the particles (6) from substantially changing their position.

    摘要翻译: 用于显示图像的电泳显示面板(1)具有多个像素(2)和驱动装置(100)。 每个像素(2)具有用于接收电位差的两个电极(3,4)和能够占据电极(3,4)之间的多个不同位置的带电粒子(6)。 驱动装置(100)能够向每个像素(2)提供一系列电位差脉冲,每个序列具有用于显示图像的用于使颗粒(6)进入其中一个位置的图像脉冲。 为了使显示面板(1)能够在应用序列后不久即可显示至少相对中等质量的图像,相对于具有接收的图像脉冲的至少多个像素(2),用于使其粒子 (6)进入极限位置时,所述数字中的每个像素(2)的序列具有在图像脉冲之后的附加图像脉冲,该附加图像脉冲用于防止颗粒(6)基本上改变其位置。

    Electrophoretic or bi-stable display device and driving method therefor
    35.
    发明申请
    Electrophoretic or bi-stable display device and driving method therefor 审中-公开
    电泳或双稳态显示装置及其驱动方法

    公开(公告)号:US20060170648A1

    公开(公告)日:2006-08-03

    申请号:US10564539

    申请日:2004-07-08

    IPC分类号: G09G3/34

    摘要: 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).

    摘要翻译: 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。

    electrophoretic display panel
    36.
    发明申请
    electrophoretic display panel 审中-公开
    电泳显示面板

    公开(公告)号:US20060139306A1

    公开(公告)日:2006-06-29

    申请号:US10543435

    申请日:2004-01-13

    IPC分类号: G09G3/34

    摘要: 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).

    摘要翻译: 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。

    Electrophoretic display panel and driving method therefor
    37.
    发明申请
    Electrophoretic display panel and driving method therefor 审中-公开
    电泳显示面板及其驱动方法

    公开(公告)号:US20060071902A1

    公开(公告)日:2006-04-06

    申请号:US10542910

    申请日:2003-12-24

    IPC分类号: G09G3/34

    摘要: The electrophoretic display panel (1), for displaying a picture corresponding to image information, has drive means (100) which are arranged for controlling the potential difference of each picture element (2) to be a reset potential difference having a reset value and a reset duration for enabling particles (6) to substantially occupy one of the extreme positions, and subsequently to be a picture potential difference for enabling the particles (6) to occupy the position corresponding to the image information. For the display panel (1) to be able to provide a relatively high picture quality, the drive means (100) are further arranged for controlling the reset potential difference of each picture element (2) of at least a number of the picture elements (2) to have an additional reset duration.

    摘要翻译: 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),其被配置为将每个图像元素(2)的电位差控制为具有复位值的复位电位差,以及 用于使粒子(6)基本上占据极限位置中的一个的复位持续时间,并且随后是使粒子(6)占据与图像信息相对应的位置的图像电位差。 为了使显示面板(1)能够提供相对高的图像质量,驱动装置(100)还被布置用于控制至少多个图像元素(2)的每个图像元素(2)的复位电位差( 2)有一个额外的复位持续时间。

    Electrophoretic display and a method of driving an electrophoretic display
    38.
    发明申请
    Electrophoretic display and a method of driving an electrophoretic display 有权
    电泳显示器和驱动电泳显示器的方法

    公开(公告)号:US20050179641A1

    公开(公告)日:2005-08-18

    申请号:US10515686

    申请日:2003-05-12

    摘要: An electrophoretic display comprises a plurality of pixels (18) with an electrophoretic material (8, 9) which comprises charged particles. A first electrode (6) and second electrode (5, 5′) associated with each one of the pixels (18) presents a drive voltage waveform (VD) across each one of the pixels (18). The charged particles are able to occupy, between the first electrode (6) and the second electrode (5), two limit positions and intermediate positions between the two limit positions which are defined by the drive voltage (VD). An addressing circuit (16, 10)generates the drive voltage waveform (VD) by successively applying between the first electrode (6) and the second electrode (5) during an image update period (IUP): (i) a reset pulse (RE) enabling said particles to substantially occupy one of the extreme positions, and (ii) a drive pulse (Vdr) having a level in accordance with an optical state to be reached by the associated one of the pixels (18). The addressing circuit (16, 10) further generates a first shaking pulse (SP1) comprising at least one preset pulse having an energy sufficient to release particles present in one of the extreme positions, but insufficient to enable said particles to reach the other one of the extreme positions. The first shaking pulse (SP1) occurs during a same first shaking time period (TS1) during each image update periods (IUP), independent on the optical state a pixel (18) should reach. The first shaking time period (TS1) precedes the reset pulse (RE) or occurs in-between the reset pulse (RE) and the drive pulse (Vdr).

    摘要翻译: 电泳显示器包括具有电泳材料(8,9)的多个像素(18),其包括带电粒子。 与每个像素(18)相关联的第一电极(6)和第二电极(5,5')呈现跨越每个像素(18)的驱动电压波形(VD)。 带电粒子能够在第一电极(6)和第二电极(5)之间占据由驱动电压(VD)限定的两个极限位置之间的两个极限位置和中间位置。 寻址电路(16,10)通过在图像更新周期(IUP)期间在第一电极(6)和第二电极(5)之间连续施加来产生驱动电压波形(VD):(i)复位脉冲 )使得所述粒子基本上占据极限位置中的一个,以及(ii)具有根据相关联的一个像素(18)所达到的光学状态的电平的驱动脉冲(Vdr)。 寻址电路(16,10)进一步产生包括至少一个预设脉冲的第一振荡脉冲(SP 1),其具有足够的能量以释放存在于极限位置之一中的颗粒,但不足以使所述颗粒到达另一个 的极端阵地。 第一抖动脉冲(SP 1)在每个图像更新周期(IUP)期间在相同的第一摇动时间段(TS 1)期间发生,独立于像素(18)应该到达的光学状态。 第一振荡时间段(TS 1)在复位脉冲(RE)之前,或者在复位脉冲(RE)和驱动脉冲(Vdr)之间发生。

    Method and apparatus for reducing edge image retention in an electrophoretic display device
    39.
    发明申请
    Method and apparatus for reducing edge image retention in an electrophoretic display device 审中-公开
    用于减少电泳显示装置中的边缘图像保持的方法和装置

    公开(公告)号:US20070126693A1

    公开(公告)日:2007-06-07

    申请号:US10579307

    申请日:2004-11-17

    IPC分类号: G09G3/34

    摘要: The invention relates to an electrophoretic display device (1) comprising charged particles (8, 9) in a fluid (10) between a pair of electrodes (5, 6). A drive means is arranged and configured to supply a drive waveform to the electrodes (5, 6), the drive waveform comprising a sequence of drive signals for effecting respective optical transitions by causing the charged particles (8, 9) to occupy a predetermined position between the electrodes (5, 6) according to image data required to be displayed, and at least one voltage pulse, preferably prior to each drive signal, for inducing a substantially uniform electric field distribution across the display device (1). This has the effect of significantly reducing edge image retention and/or ghosting.

    摘要翻译: 本发明涉及一种电泳显示装置(1),其包括位于一对电极(5,6)之间的流体(10)中的带电粒子(8,9)。 驱动装置被布置和配置为向电极(5,6)提供驱动波形,驱动波形包括一系列驱动信号,用于通过使带电粒子(8,9)占据预定位置来实现相应的光学转换 根据需要显示的图像数据的电极(5,6)和优选地在每个驱动信号之前的至少一个电压脉冲,用于在整个显示装置(1)上诱导基本上均匀的电场分布。 这具有显着减少边缘图像保持和/或重影的效果。

    Bi-stable display with reduced memory requirement
    40.
    发明申请
    Bi-stable display with reduced memory requirement 审中-公开
    双稳态显示,减少内存需求

    公开(公告)号:US20070057906A1

    公开(公告)日:2007-03-15

    申请号:US10572466

    申请日:2004-09-17

    IPC分类号: G09G3/34

    摘要: A display device (401) has groups of display elements (118), which are changed from one optical state to another by applying a waveform (330, 331) sequence of potential differences. The waveforms (330, 331) to be applied are stored in a look-up table (445) in a memory of the device (401). The look-up table is ordered so that portions of the waveforms (330, 331) are reused for different groups of display elements (401). The memory requirement for storing the waveforms (330, 331) is reduced.

    摘要翻译: 显示装置(401)具有通过施加电位差的波形(330,331)的顺序而从一个光学状态改变为另一个的显示元件组(118)。 要应用的波形(330,331)被存储在设备(401)的存储器中的查找表(445)中。 查找表被排序,使得部分波形(330,331)被重新用于不同的显示元件组(401)。 存储波形(330,331)的存储器要求降低。