- Patent Title: Touch analog front-end circuit and touch display apparatus thereof
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Application No.: US16992140Application Date: 2020-08-13
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Publication No.: US11150760B2Publication Date: 2021-10-19
- Inventor: Yen-Cheng Cheng
- Applicant: Novatek Microelectronics Corp.
- Applicant Address: TW Hsinchu
- Assignee: Novatek Microelectronics Corp.
- Current Assignee: Novatek Microelectronics Corp.
- Current Assignee Address: TW Hsinchu
- Agency: JCIPRNET
- Main IPC: G06F3/041
- IPC: G06F3/041 ; H03F1/34 ; H03F3/68
Abstract:
A touch analog front-end circuit includes a current conveyor and an accumulator. The current conveyor receives a first voltage as an operation voltage, and generates a current signal according to a touch sensing signal received from a touch display panel. The accumulator is coupled to the current conveyor, receives a second voltage as an operation voltage, and generates an accumulating result according to the current signal and a reference voltage. The first voltage is higher than the second voltage.
Public/Granted literature
- US20210048913A1 TOUCH ANALOG FRONT-END CIRCUIT AND TOUCH DISPLAY APPARATUS THEREOF Public/Granted day:2021-02-18
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