9.4:  Late‐News Paper : Fast Current‐Programming Method to OLED | Zendy

Shim ChangHoon | Zendy; Hattori Reiji | Zendy

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9.4: Late‐News Paper : Fast Current‐Programming Method to OLED

Author(s) -

Shim ChangHoon,

Hattori Reiji

Publication year - 2008

Publication title -

sid symposium digest of technical papers

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.351

H-Index - 44

eISSN - 2168-0159

pISSN - 0097-966X

DOI - 10.1889/1.3069317

Subject(s) - amoled , current (fluid) , pulse width modulation , electrical engineering , amplifier , capacitance , computer science , voltage , oled , electronic engineering , materials science , engineering , physics , nanotechnology , cmos , layer (electronics) , electrode , quantum mechanics , active matrix , thin film transistor

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.

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