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    • 72. 发明申请
    • Electrophoretic display and a method of driving an electrophoretic display
    • 电泳显示器和驱动电泳显示器的方法
    • US20050179641A1
    • 2005-08-18
    • US10515686
    • 2003-05-12
    • Guofu ZhouMark Johnson
    • Guofu ZhouMark Johnson
    • G02F1/167G09G3/20G09G3/34G09G3/36
    • G09G3/344G02F1/167G09G3/20G09G3/2014G09G2300/08G09G2310/0205G09G2310/0224G09G2310/0251G09G2310/0275G09G2310/04G09G2310/06G09G2310/061G09G2310/068G09G2320/04G09G2330/021
    • 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).
    • 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。
    • 78. 发明申请
    • Electrophoretic display with cyclic rail stabilization
    • 电泳显示与循环轨道稳定
    • US20070176889A1
    • 2007-08-02
    • US10597830
    • 2005-02-08
    • Guofu ZhouMark Johnson
    • Guofu ZhouMark Johnson
    • G09G3/34
    • G09G3/344G09G3/2011G09G2310/06G09G2310/061G09G2310/068G09G2320/0257
    • An image is updated on a bi-stable display (310) such as an electrophoretic display by using cyclic rail-stabilized driving, where an image transition is realized either directly via a single drive pulse (D1), or indirectly via a reset pulse (R) and a drive pulse (D2) of opposite polarity. First shaking pulses (S1) are applied to the bi-stable display, when the at least one image transition is realized indirectly, e.g., during at least a portion of the reset pulse and/or the drive pulse of opposite polarity. Furthermore, second shaking pulses (S2) are applied prior to the single drive pulse, or prior to the reset pulse and the drive pulse of opposite polarity. The shaking pulses in either case may include initial shaking pulses (810, 820) and final shaking pulses (815, 825), which have a reduced energy.
    • 通过使用循环轨道稳定驱动在诸如电泳显示器的双稳态显示器(310)上更新图像,其中直接经由单个驱动脉冲(D 1)实现图像转换,或者经由复位脉冲 (R)和相反极性的驱动脉冲(D 2)。 当直接实现至少一个图像转换时,例如在复位脉冲的至少一部分和/或相反极性的驱动脉冲期间,首先将抖动脉冲(S1)施加到双稳态显示。 此外,在单个驱动脉冲之前或在复位脉冲和相反极性的驱动脉冲之前施加第二摇动脉冲(S 2)。 在任一情况下的抖动脉冲可以包括具有减少的能量的初始摇动脉冲(810,820)和最终摇动脉冲(815,825)。
    • 79. 发明申请
    • Electrophoretic display with uniform image stability regardless of the initial optical states
    • 具有均匀图像稳定性的电泳显示,无论初始光学状态如何
    • US20070164982A1
    • 2007-07-19
    • US10599254
    • 2005-03-22
    • Guofu Zhou
    • Guofu Zhou
    • G09G3/34
    • G09G3/344G09G2310/02G09G2310/06G09G2320/0204G09G2320/0233G09G2320/0257
    • Respective voltage waveforms (700, 720, 740, 760; 800, 820, 840, 860, 900, 920, 940, 960; 1000, 1020, 1040, 1060) are provided for driving respective portions, e.g., pixels, of a bi-stable display (310) such as an electrophoretic display, to a common final optical state. Each waveform includes a driving pulse (D) for driving the respective display portion from a different initial optical state to substantially the common final optical state. The respective voltage waveforms further include at least one re-addressing pulse (RP, RP1, RP2, RP3), which has substantially the same pulse shape in each of the waveforms. The pulse shape may include pulses of alternating polarity, which have substantially the same energy. The re-addressing pulses adjust the particle configurations of the respective display portions such that each display portion has a uniform brightness decay versus unpowered holding time characteristic (1100, 1110, 1120, 1130).
    • 提供了相应的电压波形(700,720,740,760; 800,820,840,860,900,920,940,960,1000,1020,1040,1060),用于驱动bi的各个部分,例如像素 - 稳定显示器(310),例如电泳显示器,以达到共同的最终光学状态。 每个波形包括用于将各个显示部分从不同的初始光学状态驱动到基本上共同的最终光学状态的驱动脉冲(D)。 各个电压波形还包括至少一个重寻址脉冲(RP,RP 1,RP 2,RP 3),其在每个波形中具有基本上相同的脉冲形状。 脉冲形状可以包括交替极性的脉冲,其具有基本上相同的能量。 重寻址脉冲调整各个显示部分的粒子配置,使得每个显示部分具有相对于无动力保持时间特性(1100,1110,1120,1130)均匀的亮度衰减。