ACTIVE MATRIX DISPLAY DEVICES AND METHODS OF DRIVING THE SAME
摘要
An active matrix display device has a column driver circuit for providing pixel drive signals to columns of pixels, and comprising current source circuits. Each current source circuit has a supply switch (78) for controlling the time during which the current source supplies current to or drains current from the column. A mapping means (74) derives from a pixel drive level a digital value which represents a time period for the control of the supply switch (78) of each current source circuit. The mapping means (74) implements a single mapping function for use in providing the digital values for all current source circuits. Having a current source circuit for each column facilitates the application of inversion patterns. The conversion of pixel drive levels to values representing time is carried out in a shared manner, so that the required area is kept to a minimum.
申请公布号
WO2006092757(A3)
申请公布日期
2006.11.09
申请号
WO2006IB50606
申请日期
2006.02.27
申请人
KONINKLIJKE PHILIPS ELECTRONICS N.V.;VAN DEN HOMBERG, JOHN;BERGVELD, HENDRIK, J.;SCHOOFS, FRANS
发明人
VAN DEN HOMBERG, JOHN;BERGVELD, HENDRIK, J.;SCHOOFS, FRANS