公开(公告)号：US11573663B1

公开(公告)日：2023-02-07

申请号：US17648646

申请日：2022-01-21

Applicant: STMicroelectronics Asia Pacific Pte Ltd.

Inventor： Chan Hyuck Yun ,  Min Sang Kim

IPC: G06F3/041 ,  G06F3/044 ,  G06F1/16

Abstract: A method for operating an electronic device includes rotating a first portion of a flexible touchscreen with respect to a second portion of the flexible touchscreen around a folding axis; detecting, self-capacitances sensed in a folding area of the flexible touchscreen using a self-sensing scan, where a first side of the folding area is on the first portion of the flexible touchscreen and a second side of the folding area is on the second portion of the flexible touchscreen, and the first side and the second side are separated by a folding axis; determining, a current strength sensed by the flexible touchscreen in the folding area based on the self-capacitances in the folding area; and determining, a folding angle of the first portion of the flexible touchscreen with the second portion of the flexible touchscreen around the folding axis based on the current strength in the folding area.

公开(公告)号：US20230266844A1

公开(公告)日：2023-08-24

申请号：US18171500

申请日：2023-02-20

Applicant: STMicroelectronics Asia Pacific Pte Ltd.

Inventor： Sang soo Lee ,  Chan Hyuck Yun

IPC: G06F3/041 ,  G09G3/3208

CPC classification number: G06F3/04166 ,  G09G3/3208 ,  G06F3/0446 ,  G09G2310/0202 ,  G09G2310/08 ,  G09G2320/0247

Abstract: A method for operating an electronic device, including: determining that a touchscreen is in a low frequency display (LFD) mode, determining whether a self-sensing scan was performed in a previous frame of a plurality of frames; after determining, a self-sensing scan was performed in the previous frame, determining a current duration of time corresponding to a current frame based on a previous duration of time corresponding to the previous frame, the previous frame being a frame immediately preceding the current frame; determining, whether the current duration of time is greater than the previous duration of time; and after determining that the current duration is greater than the previous duration, performing a self-sensing scan after the current duration of time, the current duration of time being measured from a beginning of the current frame, the current duration of time having a duration less than a duration of the current frame.

公开(公告)号：US11353373B2

公开(公告)日：2022-06-07

申请号：US16887352

申请日：2020-05-29

Applicant: STMicroelectronics Asia Pacific Pte Ltd

Inventor： Min Sang Kim ,  Chan Hyuck Yun ,  Sa Hyang Hong ,  Ju Hyun Son

IPC: G01L1/00 ,  G01L1/22

Abstract: A strain gauge includes first and second substrates spaced apart from one another. A first flexible printed circuit board portion is in contact with a top side of the first and second substrates, and has a first Wheatstone bridge formed therein. The first flexible printed circuit board portion positions the first Wheatstone bridge such that two resistors of the first Wheatstone bridge are positioned to span from the top side of the first substrate to the top side of the second substrate. A second flexible printed circuit board portion is in contact with a bottom side of the first and second substrates, and has a second Wheatstone bridge formed therein. The second flexible printed circuit board positions the second Wheatstone bridge such that two resistors of the second Wheatstone bridge are positioned to span from the bottom side of the first substrate to the bottom side of the second substrate.

公开(公告)号：US11966537B2

公开(公告)日：2024-04-23

申请号：US18171500

申请日：2023-02-20

Applicant: STMicroelectronics Asia Pacific Pte Ltd.

Inventor： Sang soo Lee ,  Chan Hyuck Yun

IPC: G06F3/041 ,  G06F3/044 ,  G09G3/3208

CPC classification number: G06F3/04166 ,  G09G3/3208 ,  G06F3/0446 ,  G09G2310/0202 ,  G09G2310/08 ,  G09G2320/0247

Abstract: A method for operating an electronic device, including: determining that a touchscreen is in a low frequency display (LFD) mode, determining whether a self-sensing scan was performed in a previous frame of a plurality of frames; after determining, a self-sensing scan was performed in the previous frame, determining a current duration of time corresponding to a current frame based on a previous duration of time corresponding to the previous frame, the previous frame being a frame immediately preceding the current frame; determining, whether the current duration of time is greater than the previous duration of time; and after determining that the current duration is greater than the previous duration, performing a self-sensing scan after the current duration of time, the current duration of time being measured from a beginning of the current frame, the current duration of time having a duration less than a duration of the current frame.

公开(公告)号：US11829558B1

公开(公告)日：2023-11-28

申请号：US17961045

申请日：2022-10-06

Applicant: STMicroelectronics Asia Pacific Pte Ltd.

Inventor： Min Sang Kim ,  Chan Hyuck Yun ,  Sang Hoon Jeon ,  Jeonghee Son ,  Yun Sang On

IPC: G06F3/041 ,  G06F3/044 ,  H04M1/02

CPC classification number: G06F3/0418 ,  H04M1/0266 ,  G06F3/0446 ,  H04M2201/38 ,  H04M2250/22

Abstract: In an embodiment, a method includes performing a calibration of a first touch cell of a touch screen, where performing the calibration includes: receiving a first code associated with the first touch cell; receiving a second code associated with the first touch cell; determining whether there is an indication of a touch of the touch screen based on the first and second codes; generating a raw code based on the first or second codes; receiving a third code associated with the first touch cell; determining whether the third code matches the raw code; and in response to determining that there is no indication of a touch of the touch screen based on the first and second codes, and that the third code matches the raw code, updating a calibration code associated with the first touch cell based on the raw code or the third code.

公开(公告)号：US11609658B1

公开(公告)日：2023-03-21

申请号：US17679623

申请日：2022-02-24

Applicant: STMicroelectronics Asia Pacific Pte Ltd.

Inventor： Sang soo Lee ,  Chan Hyuck Yun

IPC: G06F3/041 ,  G09G3/3208 ,  G06F3/044

Abstract: A method for operating an electronic device, including: determining that a touchscreen is in a low frequency display (LFD) mode, determining whether a self-sensing scan was performed in a previous frame of a plurality of frames; after determining, a self-sensing scan was performed in the previous frame, determining a current duration of time corresponding to a current frame based on a previous duration of time corresponding to the previous frame, the previous frame being a frame immediately preceding the current frame; determining, whether the current duration of time is greater than the previous duration of time; and after determining that the current duration is greater than the previous duration, performing a self-sensing scan after the current duration of time, the current duration of time being measured from a beginning of the current frame, the current duration of time having a duration less than a duration of the current frame.