A 50.7dB-DR Finger-Resistance Extractable Multi-Touch Sensor IC Achieving Finger-Classification Accuracy of 97.7% on 6.7-inch Capacitive Touch Screen Panel

Cited 0 time in webofscience Cited 0 time in scopus
  • Hit : 51
  • Download : 0
This paper presents a 2D touch readout IC embedding finger resistance extraction (FRE) on a capacitive touch screen panel (TSP). The resonance-driven FRE technique and the clamped zoom-in integrator are exploited to achieve a wide dynamic range (DR). To readout the FRE and touch sensing (TS) signals, the switched-capacitor current-controlled oscillator (SC-CCO) based 14-bit ADC was also designed, which benefits low noise and compact size. The prototype chip offers the measured 37.5dB-SNR and 50.7dB-DR in TS and FRE modes, respectively, in a 6.7-inch TSP. By applying a support vector machine (SVM) learning to the FRE data, five different user-fingers were successfully classified with 97.7% accuracy after 500 learning-cycles, thereby bringing the reliable user-differentiation to multi-user collaborative touch interfaces.
Publisher
IEEE
Issue Date
2020-06-16
Language
English
Citation

2020 IEEE Symposium on VLSI Circuits, VLSI Circuits 2020

DOI
10.1109/VLSICircuits18222.2020.9162818
URI
http://hdl.handle.net/10203/275096
Appears in Collection
EE-Conference Papers(학술회의논문)
Files in This Item
There are no files associated with this item.

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0