| 摘要 |
<p>A display system comprising an electrooptic display coupled to a display driver comprises an induced voltage compensation circuit 700 to compensate for voltages induced due to parasitic capacitance (i.e. capacitive coupling) between gate and pixel electrodes. The compensation circuit comprises a system to measure a voltage applied a common pixel electrode 552 of the display, and one or both of: (i) a system to measure a voltage swing on a pixel select line of the display, and (ii) a system to measure a change in voltage on the common pixel electrode due to a voltage induced on a pixel drive electrode of the display. In response to a combination of the measured applied voltage and one or both of (i) the measured voltage swing and (ii) the measured change in voltage, the compensation circuit applies a compensation voltage to the common pixel electrode to compensate for the induced (kickback) voltage. A method of compensating for induced voltages in electrooptic displays is also disclosed. The system and method are particularly applicable to electrophoretic displays mounted on a flexible (e.g. plastic) substrate for use in electronic document reading devices. By compensating for the induced voltages resultant visual artefacts may be reduced, thus improving display quality.</p> |
