a-IGZO TFT 기반 OLED 디스플레이 화소에 내장되는 OLED 열화 보상용 온도 센서의 개발
Development of a Temperature Sensor for OLED Degradation Compensation Embedded in a-IGZO TFT-based OLED Display Pixel
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The quality of the display can be managed by effectively managing the temperature generated by the panel during use. Conventional display panels rely on an external reference resistor for temperature monitoring. However, this approach is easilyaffected by external factors such as temperature variations from the driving circuit and chips. These variations reducereliability, causing complicated mounting owing to the external chip, and cannot monitor the individual pixel temperatures. However, this issue can be simply and efficiently addressed by integrating temperature sensors during the display panel manufacturingprocess. In this study, we fabricated and analyzed a temperature sensor integrated into an a-IGZO (amorphousindium-gallium-zinc-oxide) TFT array that was to precisely monitor temperature and prevent the deterioration of OLED displaypixels. The temperature sensor was positioned on top of the oxide TFT. Simultaneously, it worked as a light shield layer,contributing to the reliability of the oxide. The characteristics of the array with integrated temperature sensors were measuredand analyzed while adjusting the temperature in real-time. By integrating a temperature sensor into the TFT array,monitoring the temperature of the display became easier and more accurate. This study could contribute to managing thelifetime of the display.
Abstract
The quality of the display can be managed by effectively managing the temperature generated by the panel during use. Conventional display panels rely on an external reference resistor for temperature monitoring. However, this approach is easilyaffected by external factors such as temperature variations from the driving circuit and chips. These variations reducereliability, causing complicated mounting owing to the external chip, and cannot monitor the individual pixel temperatures. However, this issue can be simply and efficiently addressed by integrating temperature sensors during the display panel manufacturingprocess. In this study, we fabricated and analyzed a temperature sensor integrated into an a-IGZO (amorphousindium-gallium-zinc-oxide) TFT array that was to precisely monitor temperature and prevent the deterioration of OLED displaypixels. The temperature sensor was positioned on top of the oxide TFT. Simultaneously, it worked as a light shield layer,contributing to the reliability of the oxide. The characteristics of the array with integrated temperature sensors were measuredand analyzed while adjusting the temperature in real-time. By integrating a temperature sensor into the TFT array,monitoring the temperature of the display became easier and more accurate. This study could contribute to managing thelifetime of the display.
참고문헌 (13)
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