Energy recovery in a driver circuit for a flat panel display
    1.
    发明授权
    Energy recovery in a driver circuit for a flat panel display 失效
    用于平板显示器的驱动电路中的能量恢复

    公开(公告)号:US06628275B2

    公开(公告)日:2003-09-30

    申请号:US09854397

    申请日:2001-05-11

    IPC分类号: G09G328

    CPC分类号: G09G3/2965

    摘要: A full-bridge driver circuit comprising four controllable switches supplies a voltage having alternating polarities between a first and a second electrode of a flat panel display. A series arrangement of a capacitance present between the first and a second electrode, an inductor, and a diode, is arranged in parallel with one of the switches. The diode is poled to be conductive during a resonance phase. The control circuit closes one of the switches so that the inductor and the capacitance form a resonant circuit to reverse the polarity of the voltage in an energy-efficient way without requiring any other controllable switches than the ones forming the full-bridge driver circuit.

    摘要翻译: 包括四个可控开关的全桥驱动器电路在平板显示器的第一和第二电极之间提供具有交替极性的电压。 存在于第一和第二电极,电感器和二极管之间的电容的串联布置与开关之一并联布置。 二极管在谐振阶段被极化为导通。 控制电路关闭其中一个开关,使得电感器和电容形成谐振电路,以能量效率的方式反转电压的极性,而不需要比形成全桥驱动器电路的那些更多的可控开关。

    Active matrix display with reduction of power consumption
    2.
    发明授权
    Active matrix display with reduction of power consumption 有权
    主动矩阵显示功耗降低

    公开(公告)号:US07777738B2

    公开(公告)日:2010-08-17

    申请号:US10598581

    申请日:2005-03-04

    IPC分类号: G09G3/36

    摘要: An active matrix display comprises a select driver (SD) to drive select electrodes (SE), and a data driver (DD) to supply data (D) to data electrodes (DE). Pixels (10) are associated with intersections of the data electrodes (DE) and the select electrodes (SE). The pixels (10) comprise a light emitting element (L) and a pixel driving circuit (PD). The pixel driving circuit (PD) receives a power supply voltage (VB) via a power supply electrode (PE), and data (D) via a data electrode (DE) to control a brightness of the light emitting element (L). A power supply (PS) supplies the power supply voltage (VB). The power supply electrodes (PE) are arranged to supply the power supply voltage (VB) to the pixel driving circuits (PD) of lines of pixels (10) extending in the same direction as the select electrodes (SE) or in the same direction as the data electrodes (DE). The load (AL; MA; IL) on the power supply electrodes (PE) caused by the pixels (10) associated with the lines of pixels (10) is determined (LL), and the level of the power supply voltage (VB) is controlled (CO) dependent on the load (AL; MA; IL).

    摘要翻译: 有源矩阵显示器包括用于驱动选择电极(SE)的选择驱动器(SD)和用于将数据(D)提供给数据电极(DE)的数据驱动器(DD)。 像素(10)与数据电极(DE)和选择电极(SE)的交点相关联。 像素(10)包括发光元件(L)和像素驱动电路(PD)。 像素驱动电路(PD)经由电源电极(PE)接收电源电压(VB),经由数据电极(DE)接收数据(D),以控制发光元件(L)的亮度。 电源(PS)提供电源电压(VB)。 电源电极(PE)被布置成将电源电压(VB)提供给沿与选择电极(SE)相同的方向延伸的像素(10)的像素驱动电路(PD)或沿相同方向 作为数据电极(DE)。 由与像素(10)的线相关联的像素(10)引起的电源电极(PE)上的负载(AL; MA; IL)被确定(LL),电源电压(VB) 受控(CO)取决于负载(AL; MA; IL)。