Patent · US Active

Concurrent sensing in touch screen controller with improved noise rejection

US10775930B2 · kind B2 · utility

0Cited by

2References

14Claims

0Family size

Assignee

STMicroelectronics Asia Pacific Pte Ltd · SG

Inventors

Leonard Liviu Dinu · Singapore, SG
Hugo Gicquel · Singapore, SG

Key dates

Filing date	Oct 15, 2019
Grant date	Sep 15, 2020
Priority date	—
Expiry date	Oct 15, 2039

Classification

Technology area (CPC G)Physics
CPC primaryG06F3/0445
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

An electronic device includes a plurality of charge-to-current converters each including a first NMOS transistor having a source coupled to a sense line, a first capacitor between a gate and source of the first NMOS transistor so that a transient component of noise from the sense line is applied to both, a first PMOS transistor having a source coupled to the sense line, a second capacitor between a gate and source of the first PMOS transistor so the transient component of the noise is applied to both, a first current mirror having an input coupled to a drain of the first NMOS transistor and an output coupled to an output for that charge to current converter, and a second current mirror having an input coupled to a drain of the first PMOS transistor and an output coupled to the output for that charge to current converter.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.