한국정보디스플레이학회:학술대회논문집

The Korean Infomation Display Society (한국정보디스플레이학회)
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Enhancing Lifetime of White OLED Device by Minimizing Operating Voltage Increase

  • Lee, Sung-Soo (LC/OLED Research Team, LCD Business, Samsung Electronics Co., Ltd.) ;
  • Choi, Jun-Ho (LC/OLED Research Team, LCD Business, Samsung Electronics Co., Ltd.) ;
  • Ha, Jae-Kook (LC/OLED Research Team, LCD Business, Samsung Electronics Co., Ltd.) ;
  • Lee, Sang-Pil (LC/OLED Research Team, LCD Business, Samsung Electronics Co., Ltd.) ;
  • Kim, Seong-Min (LC/OLED Research Team, LCD Business, Samsung Electronics Co., Ltd.) ;
  • Choi, Ji-Hye (LC/OLED Research Team, LCD Business, Samsung Electronics Co., Ltd.) ;
  • Lee, Soo-Yeon (LC/OLED Research Team, LCD Business, Samsung Electronics Co., Ltd.) ;
  • Kim, Hyo-Seok (LC/OLED Research Team, LCD Business, Samsung Electronics Co., Ltd.) ;
  • Chu, Chang-Woong (LC/OLED Research Team, LCD Business, Samsung Electronics Co., Ltd.) ;
  • Shin, Sung-Tae (LC/OLED Research Team, LCD Business, Samsung Electronics Co., Ltd.) ;
  • Kim, Chi-Woo (LC/OLED Research Team, LCD Business, Samsung Electronics Co., Ltd.)
  • Published : 2007.08.27
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Abstract

We fabricate green device having unique life time characteristics of operating voltage reduction with time, ${\Delta}V_{op}$ <0. A green device needs lower voltage than initial voltage for sustaining constant current as life time goes on. It means there are two possible reasons; one is interface modification between anode and HIL due to oxygen plasma treatment and the other is bulk property modification due to combination of new green host and new green dopant. From these materials and oxygen plasma treatment, we can make white OLED device having the characteristics of low ${\Delta}V_{op}$ increasing.

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