Invention Grant
- Patent Title: Concurrent sensing in touch screen controller with improved noise rejection
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Application No.: US16653172Application Date: 2019-10-15
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Publication No.: US10775930B2Publication Date: 2020-09-15
- Inventor: Leonard Liviu Dinu , Hugo Gicquel
- Applicant: STMicroelectronics Asia Pacific Pte Ltd
- Applicant Address: SG Singapore
- Assignee: STMicroelectronics Asia Pacific Pte Ltd
- Current Assignee: STMicroelectronics Asia Pacific Pte Ltd
- Current Assignee Address: SG Singapore
- Agency: Crowe & Dunlevy
- Main IPC: G06F3/041
- IPC: G06F3/041 ; G06F3/044

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.
Public/Granted literature
- US20200042140A1 CONCURRENT SENSING IN TOUCH SCREEN CONTROLLER WITH IMPROVED NOISE REJECTION Public/Granted day:2020-02-06
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