US 11,941,211 B2
Balanced mutual capacitance systems and methods
William Matthew Pender Paul, San Francisco, CA (US); Christoph H. Krah, Cupertino, CA (US); Bin Huang, San Jose, CA (US); and Stanley Bo-Ting Wang, Cupertino, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Filed by Apple Inc., Cupertino, CA (US)
Filed on Mar. 17, 2023, as Appl. No. 18/185,968.
Application 18/185,968 is a continuation of application No. 16/998,456, filed on Aug. 20, 2020, granted, now 11,614,839.
Prior Publication US 2023/0229275 A1, Jul. 20, 2023
Int. Cl. G06F 3/044 (2006.01); G06F 3/041 (2006.01)
CPC G06F 3/0445 (2019.05) [G06F 3/0412 (2013.01); G06F 3/04164 (2019.05); G06F 3/04166 (2019.05); G06F 3/0446 (2019.05)] 18 Claims
OG exemplary drawing
 
1. A touch sensor panel including:
one or more drive electrodes configured to be coupled to drive circuitry, the drive circuitry configured to apply one or more drive signals to the one or more drive electrodes during touch sensing,
one or more sense electrodes surrounded by the one or more drive electrodes and configured to be coupled to sense circuitry, the sense circuitry configured to sense one or more voltages of the one or more sense electrodes indicative of one or more mutual capacitances between the one or more sense electrodes and the one or more drive electrodes during the touch sensing, and
one or more second drive electrodes configured to be coupled to the drive circuitry, the drive circuitry further configured to apply one or more second drive signals to the one or more second drive electrodes, the one or more second drive signals having a different phase from a phase of the one or more drive signals.