Patent ID: 11928276
Assignee: SHARP DISPLAY TECHNOLOGY CORPORATION
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 5:
6. A liquid crystal display device including a plurality of video signal lines configured to transmit a video signal, a plurality of scanning signal lines intersecting the plurality of video signal lines, a liquid crystal panel including a display portion including pixel forming sections provided in a matrix shape in a plurality of rows and a plurality of columns in correspondence to the plurality of video signal lines and the plurality of scanning signal lines, and a sensor electrode for touch position detection built into the liquid crystal panel, the liquid crystal display device comprising:
a scanning signal line drive circuit configured to scan the plurality of scanning signal lines one by one, to write, via a corresponding video signal line of the plurality of video signal lines, the video signal into each of the pixel forming sections provided in the plurality of rows and the plurality of columns;
a sensor electrode drive circuit configured to drive the sensor electrode; and
a control circuit configured to control operation of the scanning signal line drive circuit and operation of the sensor electrode drive circuit,
wherein the control circuit controls the operation of the scanning signal line drive circuit to cause the scanning of a scanning signal line of the plurality of scanning signal lines to be stopped at mutually different rows in each of a first frame period and a second frame period, the first and second frame periods being two consecutive frame periods, and controls the operation of the sensor electrode drive circuit to cause the sensor electrode to be driven during a period in which the scanning of the scanning signal lines is stopped,
the control circuit further controls the operation of the scanning signal line drive circuit to cause all of the plurality of scanning signal lines to be scanned one by one in the first frame period, and
the control circuit further controls the operation of the scanning signal line drive circuit to cause all of the plurality of scanning signal lines to be scanned one by one in the second frame period.