| 摘要 |
PROBLEM TO BE SOLVED: To provide a light or radiation detector wherein a function as a switch of a switching element can be delivered without changing the characteristic of the switching element. SOLUTION: When a signal monitor circuit 15 detects stop of a start signal from an external host signal and an ON or OFF state of a thin film transistor being the switching element is consecutive in excess of a prescribed time set within a period wherein the characteristic of the thin film transistor is unchanged, a gate drive signal composite circuit 11 voluntarily controls ON/OFF switching drive of the thin film transistor through the configuration of the respective circuits 15, 11. Specifically, the start signal from a start signal generating circuit 14 is switched to be output to an output terminal O via an input terminal A of a signal switching circuit 13. As a result, the function of the thin film transistor as the switch can be delivered without changing the characteristic of the thin film transistor. COPYRIGHT: (C)2007,JPO&INPIT
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