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    • 2. 发明申请
    • DISPLAY DEVICE HAVING REDUCED POWER CONSUMPTION
    • 具有降低功耗的显示设备
    • WO2005017869A1
    • 2005-02-24
    • PCT/IB2004/051411
    • 2004-08-06
    • KONINKLIJKE PHILIPS ELECTRONICS N. V.NEGOI, Andy CatalinPILLOUD, Bernard
    • NEGOI, Andy CatalinPILLOUD, Bernard
    • G09G3/36
    • G09G3/3625G09G3/3681G09G3/3692G09G3/3696G09G2330/023
    • The present invention concerns generally passive matrix displays, in particular a device comprising a display arrangement (1) and a display driver circuit (2). The display arrangement (1) comprises a liquid crystal material between a first substrate provided with row electrodes (7) and a second substrate provided with column electrodes (6), in which overlapping parts of the row and column electrodes define pixels (8). The display driver circuit (2) comprises means (5) for driving the column electrodes (6) and means (4) for driving the row electrodes (7). The row electrodes (7) supply groups of p rows (p>=2) with row selection voltage levels (V3, VC, MV3) for selecting rows and the column voltage levels (V2, V1, VC, MV1, MV2) are provided by means (5) for driving the column electrodes (6). The column voltage levels (V2, V1, VC, MV1, MV2) to be supplied to the column electrodes (6) are selectable from p+l different column voltage levels (V2, V1, VC, MV1, MV2) depending on the image data to be displayed, wherein the column voltage levels (V2, V1, VC, MV1, MV2) are symmetrically distributed around a middle voltage level (VC). To provide a display device having a low power consumption it is proposed to connect the middle voltage level (VC) in dependency on a deviation from a predetermined value of the middle voltage level (VC) with a higher (Vsupplyl) or a lower voltage potential (VSS) until the predetermined value of the middle voltage level (VC) is reached or the middle voltage level (VC) stays within a tolerance range.
    • 本发明一般涉及无源矩阵显示器,特别是包括显示装置(1)和显示驱动电路(2)的装置。 显示装置(1)包括在设置有行电极(7)的第一基板和设置有列电极(6)的第二基板之间的液晶材料,其中行电极和列电极的重叠部分限定像素(8)。 显示驱动电路(2)包括用于驱动列电极(6)的装置(5)和用于驱动行电极(7)的装置(4)。 行电极(7)提供具有用于选择行的行选择电压电平(V3,VC,MV3)的p行组(p> = 2),并且提供列电压电平(V2,V1,VC,MV1,MV2) 通过用于驱动列电极(6)的装置(5)。 根据图像,可以从p + 1个不同的列电压电平(V2,V1,VC,MV1,MV2)中选择要提供给列电极(6)的列电压电平(V2,V1,VC,MV1,MV2) 要显示的数据,其中列电压电平(V2,V1,VC,MV1,MV2)围绕中间电压电平(VC)对称分布。 为了提供具有低功耗的显示装置,建议根据具有较高(Vsupply1)或较低电压电位的中间电压电平(VC)的预定值的偏差来连接中间电压电平(VC) (VSS),直到达到中间电压电平(VC)的预定值或中间电压电平(VC)保持在公差范围内。
    • 3. 发明申请
    • SYSTEM FOR DRIVING A LIQUID CRYSTAL DISPLAY WITH POWER SAVING AND OTHER IMPROVED FEATURES
    • 用于驱动液晶显示器的系统,具有省电和其他改进的特性
    • WO01054108A1
    • 2001-07-26
    • PCT/US2001/001914
    • 2001-01-19
    • G02F1/133G09G3/20G09G3/36
    • G09G3/3681G09G3/3614G09G3/3692G09G2310/0248G09G2330/023
    • Power consumption for driving a liquid crystal display is reduced by connecting together row electrodes that are going through opposite voltage transitions so that the charges would cancel. After such charge cancellation, the respective row electrodes are then driven to respective target potentials by means of drivers. The row and/or column electrodes of the liquid crystal display may also be connected to storage capacitors so that the charges at these electrodes may be stored in the capacitors where the charges stored may be then reused subsequently to drive different electrodes towards target potentials, to reduce power consumption in the subsequent drive of the electrodes to their target potentials. The row voltage driving waveform is such that the driving voltage steps through two or more voltage increments before reaching a final value for turning on or off one or more pixels. This reduces shadows and improves quality of the display.
    • 通过将正在经过相反电压转换的行电极连接在一起,从而降低了驱动液晶显示器的功耗,从而使电荷消失。 在这种电荷消除之后,通过驱动器将相应的行电极驱动到各个目标电位。 液晶显示器的行和/或列电极也可以连接到存储电容器,使得这些电极处的电荷可以存储在电容器中,其中存储的电荷可以随后重新使用以驱动不同的电极朝向目标电位, 将电极的后续驱动中的功耗降低到其目标电位。 行电压驱动波形使得驱动电压在达到用于打开或关闭一个或多个像素的最终值之前经过两个或更多个电压增量。 这样可以减少阴影并提高显示质量。
    • 4. 发明申请
    • ADDRESSING ARRAYS OF ELECTRICALLY-CONTROLLABLE ELEMENTS
    • 解决电子控制元件的阵列
    • WO98044481A1
    • 1998-10-08
    • PCT/GB1998/000919
    • 1998-03-26
    • G02F1/133G09G3/20G09G3/36
    • G09G3/20G09G3/3629G09G3/3681G09G3/3692G09G2300/0408G09G2300/0426G09G2310/0278G09G2310/0297
    • An electrode arrangement for an array of electrically-controllable elements comprises a series of generally parallel electrodes (16) each for extending along a respective line of the electrically-controllable elements, and a series of driver lines (20(1-6)) for receiving driving signals. Each electrode is connected to a plurality of the driver lines each via a respective impedance (26). Each electrode is so connected to at least three of the driver lines. Additionally or alternatively, the driver lines are so connected to the electrodes such that the driver lines cannot be split into a pair of arbitrary groups of the driver lines for which (a) each group has generally the same number of driver lines and (b) each electrode is so connected to at least one of the driver lines in one of the groups and to at least one of the driver lines in the other of the groups. This enables the ratio of the number of electrodes to the number of driver lines to be increased. The impedances in combination with a decoder (24) provide a decoding system which is arranged to perform a plural-stage process in determining which of the driver lines to stimulate in response to each electrode address value supplied to the decoder. This enables the network configuration of the impedances to be machine generated, and also enables the decoder to calculate on the fly which driver lines to stimulate in response to each address value. Furthermore, different resolutions may be provided to enable groups of the electrodes to be addressed simultaneously. The invention is applicable, for example, to liquid crystal displays, arrays of memory elements and arrays of sensors such as light-sensors.
    • 用于电可控元件阵列的电极装置包括一系列大致平行的电极(16),每个电极用于沿着电可控元件的相应线延伸,以及一系列驱动线(20(1-6)),用于 接收驾驶信号。 每个电极通过相应的阻抗(26)连接到多个驱动器线。 每个电极与至少三个驱动线连接。 另外或替代地,驱动器线路连接到电极,使得驱动器线路不能被分成一对驱动线路的任意组,其中(a)每组具有大致相同数量的驱动器线路,(b) 每个电极如此连接到组中的一个中的至少一个驱动器线和另一个组中的至少一个驱动器线。 这使得电极数量与驱动器线数之间的比例将增加。 与解码器(24)组合的阻抗提供了一种解码系统,其被布置为执行多级处理,以响应于提供给解码器的每个电极地址值来确定要激励的驱动器线中的哪一个。 这使得阻抗的网络配置能够被机器生成,并且还使得解码器能够在飞行中计算响应于每个地址值而刺激的哪些驱动器线。 此外,可以提供不同的分辨率以使电极组能够同时寻址。 本发明可应用于例如液晶显示器,存储元件阵列和诸如光传感器的传感器阵列。