Patent ID: 11874997
Assignee: SHARP KABUSHIKI KAISHA
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A display device including: a display unit including pixel circuits of n rows×m columns (n and m are integers greater than or equal to 2), each having a display element provided between a first electrode and a second electrode and configured to emit light at luminance determined based on a drive current flowing through the second electrode from the first electrode, and a drive transistor configured to control the drive current; and a touch panel including a plurality of sensor electrodes for detecting a touch position on the display unit, the display device comprising:
a display drive circuit configured to drive the pixel circuits of n rows×m columns while performing a characteristic detection process to compensate for degradation of the drive transistor or the display element, the characteristic detection process including a process of measuring a current flowing through each pixel circuit; and
a touch panel control circuit configured to apply a touch driving signal for detecting a touch position to the plurality of sensor electrodes and to detect a touch position based on detection signals obtained from the plurality of sensor electrodes,
wherein the plurality of sensor electrodes are divided into a plurality of blocks such that each block corresponds to pixel circuits in a plurality of consecutive rows and pixel circuits in a plurality of consecutive columns,
the second electrode is divided so as to correspond to the plurality of blocks, and each of divided second electrodes is shared by a corresponding plurality of display elements, and
the touch panel control circuit applies the touch driving signal to sensor electrodes belonging to a block different from a block corresponding to pixel circuits that are targets for the characteristic detection process, during a current measurement period during which a process of measuring a current is performed, the process being included in the characteristic detection process.