公开(公告)号：US20230333691A1

公开(公告)日：2023-10-19

申请号：US17659617

申请日：2022-04-18

Applicant: STMicroelectronics Asia Pacific Pte Ltd.

Inventor： MooKyung Kang ,  Sang Hoon Jeon

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/0418 ,  G06F3/0446

Abstract: A method includes: displaying, an image on a display by sequentially displaying a plurality of frames of the image, the plurality of frames including a first frame and second frame; performing a first noise sampling scan at a plurality of frequencies at a first time location within a first frame; determining a first frequency from the plurality of frequencies with the lowest noise; performing a first mutual sensing scan at the first frequency; performing, a second noise sampling scan at the plurality of frequencies at a second time location within a second frame of the plurality of frames, the second time location being a different frame location than the first time location; determining a second frequency from the plurality of frequencies with the lowest noise, the second frequency being different from the first frequency; and performing, a second mutual sensing scan at the second frequency.

公开(公告)号：US20230195255A1

公开(公告)日：2023-06-22

申请号：US18171582

申请日：2023-02-20

Applicant: STMicroelectronics Asia Pacific Pte Ltd.

Inventor： Sa Hyang Hong ,  Sang Hoon Jeon ,  Yun Sang On ,  Min Sang Kim

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/04166 ,  G06F3/0446 ,  G06F3/0442 ,  G06F2203/04102 ,  G09F9/301

Abstract: A method for operating an electronic device, the method including: displacing a rollable touchscreen to a first position along a first direction, a first side of the rollable touchscreen being mounted in a housing, the rollable touchscreen being configured to be rolled into or unrolled out of the housing along the first direction, detecting an active electrode at a first location on the rollable touchscreen, the active electrode being mounted in the housing, and determining the first position of the rollable touchscreen based on the first location, the first positing being indicative of a fractional amount of the rollable touchscreen outside the housing.