| CPC G06F 3/0416 (2013.01) [G06F 3/04146 (2019.05)] | 4 Claims |
|
1. A touch operation detection device that inputs an input signal with respect to a plurality of drive lines arranged in parallel in a display panel, and detects a position of a touch operation made with respect to a display screen that is displayed on the display panel based on an output signal detected from a plurality of sense lines arranged in parallel in the display panel and intersecting the plurality of drive lines, the touch operation detection device comprising:
a grouping processing circuit that groups the plurality of drive lines into a plurality of groups, each having a set grouped number of adjacent drive lines;
a drive processing circuit that inputs the input signal to each of the set grouped number of adjacent drive lines that has been grouped by the group processing circuit;
a detection processing circuit that detects the output signal that is output from the plurality of sense lines;
a setting processing circuit that sets a display magnification of the display screen according to the set grouped number;
a display processing circuit that causes the display panel to display the display screen in the display magnification; and
a determination processing circuit that determines, in a state where the display screen is displayed on the display panel in the display magnification by the display processing circuit, a position of the touch operation on the display screen that is displayed in the display magnification based on the output signal that is output from the plurality of sense lines in response to the input signal that is input to each of the set grouped number of adjacent drive lines, wherein
the drive processing circuit switches to a first drive mode that inputs the input signal to each M drive lines when the set grouped number is set to M by the grouping processing circuit, and switches to a second drive mode that inputs the input signal to each N drive lines when the set grouped number is set to N by the grouping processing circuit, where M and N are natural numbers, and M<N, and
the setting processing circuit sets the display magnification in the second drive mode to a larger value than the display magnification in the first drive mode; wherein
the drive processing circuit switches to the first drive mode in a first operation mode that accepts a touch operation due to contact being made with respect to the display panel, and switches to the second drive mode in a second operation mode that accepts a contactless touch operation being made with respect to the display panel.
|