Journal of Sensor Science and Technology (센서학회지)

The Korean Sensors Society (한국센서학회)
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Temperature sensor without reference resistor by indium tin oxide and molybdenum

인듐틴옥사이드와 몰리브데늄을 이용한 외부 기준 저항이 필요 없는 온도센서

  • Jeon, Ho-Sik (Department of Semiconductor & Display Engineering, Hoseo University) ;
  • Bae, Byung-Seong (Department of Semiconductor & Display Engineering, Hoseo University)
  • 전호식 (호서대학교 반도체디스플레이학과) ;
  • 배병성 (호서대학교 반도체디스플레이학과)
  • Received : 2010.09.26
  • Accepted : 2010.11.23
  • Published : 2010.11.30
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Abstract

Display quality depends on panel temperatures. To compensate it, temperature sensor was integrated on the panel. The conventional temperature sensor integrated on the panel needs external reference resistor. Since the resistance of external resistor can vary according to the variation of the environment temperature, the conventional temperature sensor can make error in temperature sensing. The environmental temperatures can change by the back light unit, driving circuits or chips. In this paper, we proposed a integrated temperature sensor on display panel which does not need external reference resister. Instead of external reference resistor, we used two materials which have different temperature coefficient in resistivity. They are connected serially and the output voltage was measured at the point of connection with the applied voltage to both ends. The proposed sensor was fabricated with indium tin oxide(ITO), and Mo metal electrode temperature sensor which were connected serially. We verified the temperature senor by the measurements of sensitivity, lineality, hysteresis, repeatability, stability, and accuracy.

Keywords

References

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