9.4: Late‐News Paper: Fast Current‐Programming Method to OLED
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The concept of ‘negative capacitance’, which consists of a differentiation circuit, an inverting voltage amplifier and a voltage-to-current converter, was introduced to the driving of PMOLED to shorten the current setting time even at a small current level. This new driving circuit enabled to show an accurate gray scale with both PWM and PAM methods, and is also applicable to a current-programmed AMOLED.
[1] Gyu-Hyeong Cho,et al. P‐40: A Novel Data Driving Method and Circuits for AMOLED Displays , 2006 .
[2] Reiji Hattori,et al. Acceleration of current programming speed for AMOLED using active negative-capacitance circuit , 2007 .
[3] A. Nathan,et al. A fast settling current driver based on the CCII for AMOLED displays , 2005, Journal of Display Technology.