The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 21, 2025
Filed:
May. 28, 2024
Chipone Technology (Beijing) Co., Ltd., Beijing, CN;
Cheng Liu, Beijing, CN;
Chipone Technology (Beijing) Co., Ltd., Beijing, CN;
Abstract
The present disclosure relates to a touch detection device and method, and an electronic apparatus. The touch detection device comprises: a charge amplification circuit connected to a sensing point of a touch panel and configured to receive an excitation signal and charges of the sensing point, amplify the charges of the sensing point, and output a capacitance change signal of the sensing point; and a capacitance compensation circuit connected to the sensing point of the touch panel and configured to inject compensation charges into the sensing point in a process during which a level of the excitation signal changes, wherein a polarity of the compensation charges is related to a direction of the level of the excitation signal changing. The embodiment of the present disclosure may compensate for or even eliminate the influence caused by the parasitic capacitance of the touch panel, improve the accuracy of touch detection, and save the circuit area.