SELF-CAPACITANCE TOUCH DETECTION CIRCUIT
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United States of America Patent
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N/A
Issued Date -
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app pub date -
Aug 8, 2016
filing date -
Jun 6, 2014
priority date (Note) -
Published
status (Latency Note)
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Abstract
A self-capacitance touch detection circuit includes a signal generator, a first amplifier, a cancellation signal generator and an analog-to-digital converter. The signal generator generates a driving signal and then the driving signal is divided into a first output branch and a second output branch, the first output branch being connected to the cancellation signal generator, a signal passing through an offset circuit being output to a first input terminal of the amplifier, and the second output branch being respectively connected to a touch panel and a second input terminal of the amplifier; the amplifier outputs a signal to the analog-to-digital converter; and the analog-to-digital converter converts the signal into a digital signal and sends the digital signal to a main controller.
First Claim
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International Classification(s)
- 2016 Application Filing Year
- G06F Class
- 60255 Applications Filed
- 46180 Patents Issued To-Date
- 76.65 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 5 Citation Count
- G06F Class
- 14.60 % this patent is cited more than
- 8 Age
