한국정보디스플레이학회:학술대회논문집

The Korean Infomation Display Society (한국정보디스플레이학회)
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Current Uniformity Enhancement for AMOLED Data Driver IC

  • Bae, Han-Jin (Division of Electrical and Computer Engineering, Hanyang University) ;
  • Bae, Joon-Ho (Division of Electrical and Computer Engineering, Hanyang University) ;
  • Choi, Byong-Deok (Division of Electrical and Computer Engineering, Hanyang University) ;
  • Kwon, Oh-Kyong (Division of Electrical and Computer Engineering, Hanyang University)
  • Published : 2005.07.19
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Abstract

A novel current-type data driver for active matrix organic light emitting diode (AMOLED) is proposed for current uniformity enhancement among its output channels. New architecture is composed of shadow DACs that precharge output stages, a single-real DAC that correct the output level to a real target current level and output stages that operate in 3 states of sampling, correcting and driving. Simulation results show that the proposed driving method and circuits improve the current uniformity among output channels of a current-type driver IC.

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