Abstract:
A positioning method for a touch screen including a conductive layer having an anisotropic impedance and separated detecting electrodes disposed at a side of the conductive layer is provided. A first voltage is provided to the conductive layer. A second voltage is provided to the conductive layer when the touch screen is touched, wherein a touch point is defined as where the second voltage is applied. Voltages of the detecting electrodes are sequentially measured. The relative extreme voltage and the voltage of the detecting electrode closest to the relative extreme voltage are selected. A coordinate of the touch point in the conductive layer is determined according to the relative extreme voltage and where the detecting electrode providing the voltage closest to the relative extreme voltage is.
Abstract:
The invention provides methods of driving a pixel and liquid crystal display panels implementing the methods. The invention generates an ideal data voltage corresponding to a gray level of the pixel, and generates a compensated data voltage corresponding to the gray level according to a polarity change of the pixel. The charging period of the pixel is divided into a first charging time segment and a second charging time segment. The invention charges the pixel by the compensated data voltage during the first charging time segment, and charges the pixel by the compensated data voltage during the second charging time segment.