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1. (WO2013116494) METHODS FOR DRIVING ELECTRO-OPTIC DISPLAYS

Pub. No.:    WO/2013/116494    International Application No.:    PCT/US2013/024106
Publication Date: Fri Aug 09 01:59:59 CEST 2013 International Filing Date: Fri Feb 01 00:59:59 CET 2013
IPC: G09G 3/34
Applicants: E INK CORPORATION
Inventors: AMUNDSON, Karl Raymond
APREA, Matthew J.
CROUNSE, Kenneth R.
HARRINGTON, Demetrious Mark
LIN, Jason
SJODIN, Theodore A.
SU, Chia-Chen
Title: METHODS FOR DRIVING ELECTRO-OPTIC DISPLAYS
Abstract:
Methods for driving electro-optic displays to reduce visible artifacts include (a) applying a first drive scheme to a minor proportion of the display pixels and a second drive scheme to other pixels, the pixels using the first drive scheme varying at each transition; (b) using different drive schemes on different pixel groups so that pixels in differing groups undergoing the same transition use different waveforms; (c) applying a balanced pulse pair or a top-off pulse to a pixel undergoing a white-to-white transition and lying adjacent a pixel undergoing a visible transition; (d) driving extra pixels where the boundary between driven and undriven areas falls along a straight line; and (e) driving a display with both DC balanced and DC imbalanced drive schemes, maintaining an impulse bank value for the DC imbalance and modifying transitions to reduce the impulse bank value.