Patent ID: 7728401
Filing Date: 2010-06-01
Classification: G01K,G02F,Y10S

Abstract:
1. A thin-film semiconductor device comprising: a temperature sensor formed of a first thin-film semiconductor and sensing a temperature as current; and a current-voltage converter formed of a second thin-film semiconductor and having temperature dependence in which its current-voltage characteristic is different from that of said temperature sensor; wherein a temperature sensed by said temperature sensor is converted to a voltage by said current-voltage converter; wherein said temperature sensor comprises a thin-film semiconductor layer, a gate electrode applying a gate voltage to said thin-film semiconductor layer, and a drain electrode and a source electrode conducting an electric current to said thin-film semiconductor layer, wherein said drain electrode or said source electrode is electrically short-circuited with said gate electrode; and wherein the drain electrode or the source electrode of a first thin-film transistor of said current-voltage converter is connected to the drain electrode or the source electrode of said temperature sensor.