18830448. TOUCH SENSING ARCHITECTURE FOR SMALL FORM FACTORS (Apple Inc.)
TOUCH SENSING ARCHITECTURE FOR SMALL FORM FACTORS
Organization Name
Inventor(s)
Karan S. Jain of San Jose CA US
Nandita Venugopal of San Francisco CA US
Santosh Pokhrel of San Jose CA US
TOUCH SENSING ARCHITECTURE FOR SMALL FORM FACTORS
This abstract first appeared for US patent application 18830448 titled 'TOUCH SENSING ARCHITECTURE FOR SMALL FORM FACTORS
Original Abstract Submitted
A touch sensor panel operable within small form factor devices utilizes a plurality of discrete column electrodes arranged in a plurality of columns, and a plurality of continuous row electrodes arranged in a plurality of rows. Each column is divided into a plurality of regions, with each region formed from a plurality of electrically connected discrete column electrodes within that column. A scan plan includes a series of mutual capacitance scans wherein discrete column electrode(s) in all regions in all columns are sequentially stimulated, and AC signals indicative of mutual capacitance at certain the continuous row electrode(s) is measured. The scan plan includes a series of projection self-capacitance scans, wherein AC signals indicative of self-capacitance at a plurality of continuous row electrodes is measured for all rows, and AC signals indicative of self-capacitance at the discrete column electrodes in each region of all columns is measured.