Patent ID: 8237638

Claim:
A method of driving an organic light emitting diode display, the display having a plurality of pixels each addressable by a row electrode and a column electrode, the method comprising: receiving image data for display, said image data defining an image matrix; factorising said image matrix into a product of at least a first factor matrix and a second factor matrix, said first factor matrix defining row drive signals for said display, said second factor matrix defining column drive signals for said display, wherein said factorising comprises calculating values of said first factor matrix and calculating values of said second factor matrix; and driving said display row and column electrodes using said row and column drive signals respectively defined by said first and second factor matrices, said driving comprising driving a said pixel of said display using a said row drive signal defined by said first factor matrix and simultaneously a said column drive signal defined by said second factor matrix, wherein said factorising comprises non-negative matrix factorisation (NMF), and wherein said driving comprises driving a plurality of said row electrodes simultaneously with a plurality of said column electrodes to thereby build up a luminescence profile over a plurality of row scan periods.