Patent ID: 8094252
Filing Date: 2012-01-10
Classification: G09G

Abstract:
1. A method of driving a display apparatus that is formed by arranging display devices each having a driving circuit and a current-driven type light emitting portion in a two dimensional matrix pattern in row and column directions, the driving circuit including at least a driving transistor having a gate electrode and source/drain regions, and a current flowing in the light emitting portion through the source/drain regions of the driving transistor, the method comprising the steps of: when the number of rows of the display devices is denoted by M, the number of the display devices configuring each row is denoted by N, and a time calculated by dividing a total time for scanning the display devices of the first row to the M-th row for each row by M is denoted by a unit time t performing a threshold voltage cancelling process in units of a display device row in which a predetermined reference voltage is applied to the gate electrode of the driving transistor of Q×N display devices configuring groups of the display device rows and a predetermined driving voltage is applied to one source/drain region of the Q×N display devices so as to change the electric potential of the other source/drain region toward an electric potential calculated by subtracting a threshold voltage of the driving transistor from the reference voltage during a period T sequentially performing a writing process, in which video signals are applied to the gate electrodes of the driving transistor of N display devices configuring the display device row, Q times, wherein the writing process is sequentially performed Q times within a period not exceeding a half of the period T