- Patent Title: Detection circuit, touch control panel, and electronic apparatus
-
Application No.: US17876418Application Date: 2022-07-28
-
Publication No.: US11853098B2Publication Date: 2023-12-26
- Inventor: Cheng Liu
- Applicant: Chipone Technology (Beijing) Co., LTD.
- Applicant Address: CN Beijing
- Assignee: Chipone Technology (Beijing) Co., Ltd.
- Current Assignee: Chipone Technology (Beijing) Co., Ltd.
- Current Assignee Address: CN Beijing
- Agency: Fish & Richardson P.C.
- Priority: CN 2010187345.8 2020.03.17
- Main IPC: G06F3/041
- IPC: G06F3/041

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.
Public/Granted literature
- US20220374128A1 DETECTION CIRCUIT, TOUCH CONTROL PANEL, AND ELECTRONIC APPARATUS Public/Granted day:2022-11-24
Information query