Display apparatus and method for controlling display apparatus

摘要

A display device includes a plurality of common lines, a plurality of drive lines, a plurality of light emitting elements, a source driver, and a sink driver. At least one charging device is connected to at least one of the common lines and configured to increase a voltage of the common lines to a predetermined value when the voltage of the common lines is lower than the predetermined value during a period while the source driver does not apply the voltage. At least one discharging device is connected to at least one of the plurality of common lines and configured to decrease the voltage of the common lines to the predetermined value when the voltage of the common lines is higher than the predetermined value during the period while the source driver does not apply the voltage.

主权项

1. A display apparatus comprising:
a plurality of common lines including a first common line; a plurality of drive lines; a plurality of light emitting elements connected to the plurality of common lines and the plurality of drive lines; a source driver to apply a voltage to the plurality of common lines on a time-sharing basis; a sink driver to draw a current from at least one drive line among the plurality of drive lines, the at least one drive line being connected to a light emitting element to be lighted-up among the plurality of light emitting elements; at least one charging device connected to the first common line and configured to increase a voltage of the first common line to a predetermined value when the voltage of the first common line is lower than the predetermined value during a period while the source driver does not apply the voltage; and at least one discharging device connected to the first common line and configured to decrease the voltage of the first common line to the predetermined value when the voltage of the first common line is higher than the predetermined value during the period while the source driver does not apply the voltage, wherein said at least one discharging device is electrically connected to the first common line during a part of or all of a period when said at least one charging device is electrically connected to the first common line, and wherein said at least one charging device and said at least one discharging device are connected to each other by a discharging semiconductor switch such that when the discharging semiconductor switch is closed said at least one charging device and said at least one discharging device are electrically connected to each other and to the first common line, and the plurality of common lines do not form part of an electrically conductive path between the at least one charging device and the at least one discharging device.