| 摘要 |
<P>PROBLEM TO BE SOLVED: To surely compensate a threshold voltage and write a data voltage in a drive transistor. <P>SOLUTION: A compensation period overlaps with a data-write period. During the period of both periods overlapping each other, a transistor Tr1 goes to off state, so that a capacitive element Ca is charged to a threshold voltage and, at the same time, a capacitive element Cb is charged with a data voltage. During a drive period, the transistor Tr1 goes to off-state, so that the capacitive element Ca is serially connected with the capacitive element Cb. As a result, the voltage obtained by adding a threshold voltage and data voltage will be applied between the gate and the source of the drive transistor Tdrp. Consequently, a driving current Iel which is compensated for the threshold voltage is supplied to an electro-optical element E. <P>COPYRIGHT: (C)2008,JPO&INPIT |
