公开(公告)号：WO1994001855A2

公开(公告)日：1994-01-20

申请号：PCT/US1993006244

申请日：1993-06-30

Applicant: UNITED TECHNOLOGIES CORPORATION

Inventor： UNITED TECHNOLOGIES CORPORATION ,  KAPOOR, Mohan L. ,  REBESCHI, Thomas, J.

IPC: G09G0

CPC classification number: G09G3/30 ,  G09G2310/027 ,  G09G2320/0204 ,  G09G2330/02

Abstract: A power supply for providing a symmetric drive for an AC electroluminescent (EL) display panel includes a single power supply which provides two voltage signal values of opposite polarity Vpos, Vneg to the panel's row drivers. The supply also corrects the difference between the two voltage signal values Vpos, Vneg as a function of the difference between the maximum column driver voltage value Vcol and its nominal value to reduce latent images on the display panel. By utilizing a single switching regulator to generate the opposite polarity row voltages Vpos, Vneg the circuit complexity and cost associated with providing a symmetric drive for an EL panel is reduced.

Abstract translation: 用于为AC电致发光（EL）显示面板提供对称驱动的电源包括单个电源，其向面板的行驱动器提供相反极性Vpos的两个电压信号值。 电源还校正两个电压信号值Vpos之间的差异，Vneg作为最大列驱动器电压值Vcol与其标称值之间的差的函数，以减少显示面板上的潜像。 通过利用单个开关调节器来产生相反极性的行电压Vpos，降低了与为EL面板提供对称驱动相关联的电路复杂性和成本。