Patent ID: 9563294
Date: 2017-02-07
CPC Classifications: G06F

Claim:
1. A method of operating a touch panel including a plurality of driving lines and a plurality of sensing lines, the method comprising: performing a first limited scan by activating only a first portion of the plurality of driving lines and only a first portion of the plurality of sensing lines, such that a first coarse position of a first touch by a user is detected; when the first coarse position of the first touch is detected by the first limited scan, performing a first local scan by activating only driving lines and sensing lines including ones adjacent to the detected first coarse position of the first touch, such that a first fine position of the first touch by the user is detected, wherein at least one of the driving lines and at least one of the sensing lines activated during the first local scan are activated during the first limited scan, wherein in performing the first limited scan: the activated driving lines in the first portion are spaced at a same interval, the activated sensing lines in the first portion are spaced at the same interval, at least one non-activated driving line is between each pair of adjacent activated driving lines, and at least one non-activated sensing line is between each pair of adjacent activated sensing lines; and performing a second limited scan simultaneously with the first local scan to detect a second coarse position of a second touch simultaneously with the first fine position of the first touch by further activating a second portion of the driving lines and a second portion of the sensing lines.