| 摘要 |
PROBLEM TO BE SOLVED: To reduce an effect of parasitic capacitance of a switching transistor to obtain a value reflecting an output of light receiving element more precisely. SOLUTION: A cell circuit 100 provided at an intersection of a scanning line 131 and a reading line 121 has a photodiode 112 in which a flowing current changes depending on an incident light amount, and a TFT 114 whose gate is connected to a cathode of the photodiode 112, whose source is connected to the scanning line 131, and whose drain is connected to the reading line 121. In an initialization period in which the scanning line 131 is selected, the photodiode 112 is biased in the forward direction to initialize the gate of the TFT 114 to a predetermined voltage. COPYRIGHT: (C)2008,JPO&INPIT
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