公开(公告)号：US20240295935A1

公开(公告)日：2024-09-05

申请号：US18540790

申请日：2023-12-14

Applicant: Novatek Microelectronics Corp.

Inventor： Chih-Yang Ke ,  Wei-Ren Chang

IPC: G06F3/041 ,  G06F3/0354 ,  G06F3/038 ,  G06F3/044 ,  H04W72/23

CPC classification number: G06F3/04162 ,  G06F3/03545 ,  G06F3/0383 ,  G06F3/0441 ,  G06F3/0442 ,  H04W72/23

Abstract: A stylus, a touch device, and a touch processing circuit are provided. The stylus includes a holding portion and a first transmission electrode. The first transmission electrode is disposed on the holding portion. The touch device includes a touch panel and a touch processing circuit. The touch processing circuit is coupled to the touch panel. The first transmission electrode transmits a first downlink signal to the touch device. The first downlink signal is used to determine a touch event that the stylus is laid on the touch panel. The touch processing circuit receives at least one first downlink signal from the holding portion of the stylus through the touch panel. The touch processing circuit is configured to determine the touch event that the stylus is laid on the touch panel based on the first downlink signal.

公开(公告)号：US12105907B2

公开(公告)日：2024-10-01

申请号：US17858945

申请日：2022-07-06

Applicant: Novatek Microelectronics Corp.

Inventor： Yu-Ying Tang ,  Wei-Ren Chang ,  Chih-Yang Ke ,  Chih-Chang Lai

IPC: G06F3/041 ,  G06F3/0354 ,  G09G3/20

CPC classification number: G06F3/04162 ,  G06F3/03545 ,  G06F3/0412 ,  G09G3/20 ,  G09G2300/0408 ,  G09G2310/0267 ,  G09G2354/00

Abstract: A display panel and an operation method of the display panel are provided. The display panel includes a display area and a frame area. The display area is configured to display an image. During a touch sensing period, the display area and the frame area emit an uplink signal to perform an active stylus touch detection operation.

公开(公告)号：US20230152918A1

公开(公告)日：2023-05-18

申请号：US17858945

申请日：2022-07-06

Applicant: Novatek Microelectronics Corp.

Inventor： Yu-Ying Tang ,  Wei-Ren Chang ,  Chih-Yang Ke ,  Chih-Chang Lai

IPC: G06F3/041 ,  G06F3/0354 ,  G09G3/20

CPC classification number: G06F3/04162 ,  G06F3/03545 ,  G06F3/0412 ,  G09G3/20 ,  G09G2310/0267 ,  G09G2300/0408 ,  G09G2354/00

Abstract: A display panel and an operation method of the display panel are provided. The display panel includes a display area and a frame area. The display area is configured to display an image. During a touch sensing period, the display area and the frame area emit an uplink signal to perform an active stylus touch detection operation.