US 12,461,627 B2
Electronic device including a touch detection system and a noise detection system
Pitter Liao, Guangdong (CN); and Roger Zhu, GuangDong (CN)
Assigned to Microchip Technology Incorporated, Chandler, AZ (US)
Filed by Microchip Technology Incorporated, Chandler, AZ (US)
Filed on Mar. 11, 2024, as Appl. No. 18/600,960.
Claims priority of application No. 202410250784.7 (CN), filed on Mar. 5, 2024.
Prior Publication US 2025/0284365 A1, Sep. 11, 2025
Int. Cl. G06F 3/041 (2006.01); G06F 3/044 (2006.01)
CPC G06F 3/0418 (2013.01) [G06F 3/044 (2013.01)] 24 Claims
OG exemplary drawing
 
1. An electronic device, comprising:
a touch device including:
a first touch electrode element; and
a second touch electrode element; and
an IC package connected to the touch device and including:
a first IC package conductive element; and
a second IC package conductive element;
a sense electrode including the first touch electrode element of the touch device;
a touch detection electrode including the second touch electrode element of the touch device; and
a touch detection system including:
a first capacitive sensing channel including a capacitive coupling between the touch detection electrode and the sense electrode; and
a touch detection circuitry to perform a series of touch detections based on a capacitance on the first capacitive sensing channel; and
a noise detection system including:
a second capacitive sensing channel including a capacitive coupling between the first IC package conductive element and second IC package conductive element of the IC package; and
a noise detection circuitry to:
perform at least one noise detection measurement, wherein a respective noise detection measurement comprises determining a respective noise-related capacitance measure associated with a capacitance on the second capacitive channel; and
determine a presence of a noise condition based on the at least one noise detection measurement; and
in response to determining the presence of the noise condition, generate a touch detection inhibit signal to inhibit at least one touch detection in the series of touch detections.