公开(公告)号：US20200233515A1

公开(公告)日：2020-07-23

申请号：US16702662

申请日：2019-12-04

Applicant: NOVATEK MICROELECTRONICS CORP.

Inventor： Yi-Ying LIN ,  Chih-Chang LAI

IPC: G06F3/041

Abstract: A touch display device including a drive chip and a touch display panel is provided. The drive chip includes a first common voltage source and a second common voltage source. The touch display panel includes a plurality of touch electrode including a plurality of rows and columns, wherein the number of columns is odd-numbered. The touch display panel includes a middle column, a first region and a second region. The middle column is interposed between the first region and the second region having the same number of touch electrodes. The touch electrodes in the first region and that in the second region are coupled to the first common voltage source and the second common voltage source respectively. The middle column is divided into a first half and a second half by a reference line. The first half and the second half have the same number of touch electrodes.

公开(公告)号：US20240028151A1

公开(公告)日：2024-01-25

申请号：US18341776

申请日：2023-06-27

Applicant: NOVATEK Microelectronics Corp.

Inventor： Yi-Ying LIN ,  Chih-Chang LAI

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/0416 ,  G06F3/0446

Abstract: A control method, suitable for a controller in an interface device having capacitive sensors, includes following steps. The capacitive sensors are arranged on a plane. During a first period, the controller is configured to set the capacitive sensors as self-capacitance sensors individually. During a second period, the controller is configured to divide the capacitive sensors into at least a first group and a second group, set the first group of capacitive sensors as a mutual-capacitance transmitter and generate a pulse signal to the mutual-capacitance transmitter, set the second group of capacitive sensors as a mutual-capacitance receiver and collect a sensing signal from the mutual-capacitance receiver in response to the pulse signal.