| 摘要 |
PROBLEM TO BE SOLVED: To solve such a problem that potentials of two data lines making a pair can not be made equal to each other because of influences of a parasitic capacitance or the like of the data lines when the data lines are simply subjected to precharging at a reference voltage and hence operation of reading out a sustaining voltage of a pixel over two data lines to compare can not be accurately carried out. SOLUTION: The potentials of data lines 55-1, 55-2 making a pair are made equal to each other by supplying a predetermined DC voltage Vguard to data lines 55-1, 55-2 prior to reading out a first measurement signal TSIG1 from each unit pixel in a first pixel group (e.g. a group of pixels in a first column) to the first data line 55-1 and prior to reading out a second measurement signal TSIG2 from each unit pixel in a second pixel group (e.g. a group of pixels in a second column) to the second data line 55-2, and by short-circuiting the data line 55-1 and the data line 55-2 through a switch 46. COPYRIGHT: (C)2008,JPO&INPIT |
