| CPC G06F 3/041662 (2019.05) [G06F 3/0446 (2019.05)] | 17 Claims |
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1. A method of driving an input sensor to detect a proximity of a user, the method comprising:
driving the input sensor in a direct sensing mode to detect whether the user has performed a direct touch on the input sensor, the input sensor including a plurality of first sensing electrodes and a plurality of second sensing electrodes insulated from the first sensing electrodes; and
upon determining the user is engaged in a call,
driving the input sensor in a first proximity sensing mode to detect the proximity of the user by applying a driving signal to a first subset of the first sensing electrodes having two or more sensing electrodes, a second subset of the first sensing electrodes having two or more sensing electrodes that is spaced apart from the first subset and a third subset of the first sensing electrodes having two or more sensing electrodes disposed between the first subset and the second subset, when the user has not performed the direct touch; and
driving the input sensor in a second proximity sensing mode to detect the proximity of the user by applying no driving signal to the sensing electrodes of the first and the second subsets and applying the driving signal to the sensing electrodes of the third subset, when the user has performed the direct touch,
where the driving signal is applied simultaneously to M sensing electrodes of the third subset and M is a natural number of 2 or more, and
in each of a plurality of frame periods,
driving the input sensor in a mutual sensing mode; and
driving the input sensor in a self-sensing mode,
wherein, in the frame periods, the mutual sensing mode is performed before each of the first and second proximity sensing modes, and the self-sensing mode is performed after each of the first and second proximity sensing modes.
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