Patent ID: 9472164
Filing Date: 2016-10-18
CPC Classification: G09G

Claim Text:
1. A light emission control method for a display apparatus, the display apparatus including a display portion that includes a plurality of light emitting diodes that are arranged in a matrix form, each of said light emitting diodes having an anode terminal and a cathode terminal, a scanning portion that is connected to a plurality of common lines each of which is connected to the anode terminal of a corresponding diode of said plurality of light emitting diodes that are arranged in corresponding one of the rows of said display portion, the scanning portion applying a voltage to selected one of said common lines when said common lines are scanned by the scanning portion, and a driving portion that is connected to a plurality of driving lines having associated parasitic capacitances, each of said parasitic capacitances being formed between said cathode terminal of each light emitting diode and ground, each of said plurality of driving lines being connected to the cathode terminals of corresponding diodes of said plurality of light emitting diodes that are arranged in corresponding one of the columns of said display portion, the driving portion activating selected diodes of said plurality of light emitting diodes so that currents flow in the selected diodes, wherein a cycle comprises a plurality of frames, wherein at least one of the frames comprises a light emission period in which the selected diodes are driven, and wherein at least one of the frames comprises a non-light emission period in which the selected diodes are not driven, the light emission control method comprises: changing the application period of the voltage to the selected one of the common lines applied by said scanning portion depending on the activation periods of said driving lines activated by said driving portion; scanning the selected one of the common lines in the light emission period with said scanning portion; and not scanning the common lines in the non-light emission period with said scanning portion, to avoid charging an electric charge in said parasitic capacitances of said driving lines.