Variable capacitance pressure sensor and handwriting expression stylus pen

摘要

The present invention discloses a variable-capacitance pressure sensor and a real-handwriting stylus. The variable-capacitance pressure sensor includes a pressure variable capacitor and a pressure touch switch, and has pressure detection function. The real-handwriting stylus includes a real-handwriting optical stylus and a real-handwriting electromagnetic stylus, and has pressure sensing function and writing effect of real handwriting.