SEMICONDUCTOR DEVICE

摘要

Embodiments herein describe a touch panel controller that has a first mode and a second mode. The touch panel controller performs a normal scan in the first mode, and performs a low-power scan in the second mode. In the normal scan, all of detection points are targeted for detection on a touch detection plane of a touch panel. In the low-power scan, only every other electrode in a group of electrodes is used to generate detection data.

主权项

1. A semiconductor device comprising:
a touch panel controller configured to receive signals from electrodes extending in first and second directions in a touch panel such that the electrodes intersect to form detection points disposed at predetermined intervals, wherein the touch panel controller is configured to generate detection data indicating whether a detection plane of the touch panel is being touched or not, wherein the touch panel controller is configured to perform a normal scan on the touch detection plane of the touch panel in a first mode, wherein, during the normal scan, all the detection points are targeted for detection, and wherein the touch panel controller is configured to perform a low-power scan on the touch detection plane of the touch panel in a second mode, wherein, for a group of the electrodes extending in the first direction, the touch panel controller uses only every other electrode in the group to generate detection data during the low-power scan.