Open AccessData Supply Voltage Reduction Scheme for Low‐Power AMOLED Displays
Author(s) -
Nam Hyoungsik,
Jeong Hoon
Publication year - 2012
Publication title -
etri journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 46
eISSN - 2233-7326
pISSN - 1225-6463
DOI - 10.4218/etrij.12.0112.0139
Subject(s) - amoled , active matrix , voltage , oled , power (physics) , power consumption , transistor , diode , low power electronics , low voltage , electrical engineering , electronic engineering , reduction (mathematics) , scheme (mathematics) , thin film transistor , materials science , computer science , engineering , physics , mathematics , layer (electronics) , mathematical analysis , geometry , quantum mechanics , composite material
This paper demonstrates a new driving scheme that allows reducing the supply voltage of data drivers for low‐power active matrix organic light‐emitting diode (AMOLED) displays. The proposed technique drives down the data voltage range by 50%, which subsequently diminishes in the peak power consumption of data drivers at the full white pattern by 75%. Because the gate voltage of a driving thin film transistor covers the same range as a conventional driving scheme by means of a level‐shifting scheme, the low‐data supply scheme achieves the equivalent dynamic range of OLED currents. The average power consumption of data drivers is reduced by 60% over 24 test images, and power consumption is kept below 25%.