Single-surface position sensor and positioning method thereof

US10712893B2 · kind B2 · utility

Assignee

• Peking University · CN

Inventors

• Haixia Zhang · Taiyuan, CN
• Mayue Shi · Beijing, CN
• Haotian Chen · Beijing, CN
• Jinxin Zhang · Beijing, CN
• Mengdi Han · Beijing, CN
• Zongming Su · Beijing, CN
• Bo Meng · 安丰镇, CN
• Xiaoliang Cheng · Nanjing, CN

Key dates

• Filing date: Feb 11, 2015
• Grant date: Jul 14, 2020
• Expiry date: Feb 25, 2035

Classification

• Technology area (CPC G): Physics
• CPC primary: G06F3/041
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A single-surface position sensor and a positioning method thereof are disclosed. The single-surface position sensor comprises a substrate layer (1) and induction electrodes (3, 4, 5, 6); the induction electrodes (3, 4, 5, 6) are located on the substrate layer (1); the sensor further comprises a friction layer (2); the friction layer (2) is located on the substrate layer (1); the friction layer (2) is located among the induction electrodes (3, 4, 5, 6); the individual induction electrodes (3, 4, 5, 6) are grounded through the same load resistors, so that an object under test contacts with and is separated from the friction layer (2) at least one time and different voltage outputs are generated across the various load resistors; a position of the object under test is determined by analyzing a ratio of the voltages of all the electrodes (3, 4, 5, 6); the single-surface position sensor is an active sensor and reduce energy consumption as compared with traditional sensors; the single-surface position sensor can be manufactured into a flexible transparent thin film and can be widely applied to portable electronic devices and wearable devices; and the single-surface position sensor is sim…