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:
Dec. 26, 2023
Filed:
Jul. 28, 2022
Chipone Technology (Beijing) Co., Ltd., Beijing, CN;
Cheng Liu, Beijing, CN;
Chipone Technology (Beijing) Co., Ltd., Beijing, CN;
Abstract
The present disclosure relates to detection circuits, touch control panels and electronic apparatuses. The circuit includes: a charge amplifier including a first input terminal, a second input terminal and an output terminal; a feedback capacitor, both ends of which are electrically connected to the first input terminal and the output terminal respectively, wherein the feedback capacitor is in parallel connection with a first switch; and a sensor electrode electrically connected to the first input terminal. A first excitation signal is applied to a thin film transistor (TFT) in a touch control panel where the detection circuit is located. A second excitation signal is applied to the second input terminal, wherein the first excitation signal is in-phase with the second excitation signal. An amplitude of the first excitation signal is larger than an amplitude of the second excitation signal.