公开(公告)号：US11946742B2

公开(公告)日：2024-04-02

申请号：US17374560

申请日：2021-07-13

Applicant: STMicroelectronics Asia Pacific Pte Ltd.

Inventor： Tae-gil Kang ,  Sung Kyu Kim ,  Sa Hyang Hong ,  Chang Woo Lee

IPC: G06F3/041 ,  G01B7/30 ,  G01B7/32 ,  G06F3/044 ,  G09G3/00

CPC classification number: G01B7/30 ,  G01B7/32 ,  G06F3/0446 ,  G09G3/035 ,  G06F2203/04102 ,  G09G2340/0407 ,  G09G2340/045 ,  G09G2340/0464

Abstract: In an example, a display device includes a rollable display including a display side and an opposite non-display side. The rollable display includes a conductive material with a pattern disposed on the non-display side. The device includes a housing configured to house the rollable display and configured to roll in and roll out the rollable display along a first direction, and a capacitive sensor including a transmitter and a receiver electrode disposed within the housing and configured to sense the pattern.

公开(公告)号：US11093097B2

公开(公告)日：2021-08-17

申请号：US16984344

申请日：2020-08-04

Applicant: STMicroelectronics Asia Pacific Pte Ltd

Inventor： Youngjin Wang ,  Tae-gil Kang

IPC: G06F3/044 ,  G06F3/041

Abstract: A data frame in a touch capacitive sensing circuit includes both mutual capacitance data and self capacitance data. The mutual capacitance data and self capacitance data of the frame are filtered to define mutual capacitance and self capacitance islands. Centroids of the mutual capacitance and self capacitance islands are calculated and then processed in a weighted mixing operation to produce a hybrid centroid that more accurately locates the coordinates of a detected touch/hover.

公开(公告)号：US10795493B2

公开(公告)日：2020-10-06

申请号：US16011941

申请日：2018-06-19

Applicant: STMicroelectronics Asia Pacific Pte Ltd

Inventor： Tae-gil Kang ,  Jay Wang

IPC: G06F3/041 ,  G06F3/0488 ,  G06F3/047 ,  G06F3/044

Abstract: A touch screen controller includes input circuitry receiving touch data from the touch screen. Processing circuitry acquires touch data from the input circuitry in a self-capacitance sensing mode, locates a force island and locates a sense island. A length of the force island and a length of the sense island is calculated. If the length of the force island is greater than a threshold force length and if the length of the sense island is greater than a threshold sense length, then the product of the lengths is calculated, and if greater than a threshold size, designated a valid area. Touch data in the valid area is then acquired in mutual-capacitance sensing mode, and represents palm touch if a maximum strength value in the valid area is less than a maximum area threshold and if a minimum strength value in the valid area is greater than a minimum area threshold.

公开(公告)号：US20190050079A1

公开(公告)日：2019-02-14

申请号：US16055922

申请日：2018-08-06

Applicant: STMicroelectronics Asia Pacific Pte Ltd

Inventor： Jay Wang ,  Tae-gil Kang

IPC: G06F3/044 ,  H03K17/96

CPC classification number: G06F3/041662 ,  G06F3/0418 ,  G06F3/044 ,  G06F3/0443 ,  G06F3/0446

Abstract: A data frame in a touch capacitive sensing circuit includes both mutual capacitance data and self capacitance data. The mutual capacitance data and self capacitance data of the frame are filtered to define mutual capacitance and self capacitance islands. Centroids of the mutual capacitance and self capacitance islands are calculated and then processed in a weighted mixing operation to produce a hybrid centroid that more accurately locates the coordinates of a detected touch/hover.

公开(公告)号：US09864468B2

公开(公告)日：2018-01-09

申请号：US15177489

申请日：2016-06-09

Applicant: STMicroelectronics Asia Pacific Pte Ltd

Inventor： Jerry Kim ,  Tae-gil Kang ,  Glen Kang ,  Rooney Kim

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/0418 ,  G06F3/044 ,  G06F2203/04104

Abstract: A method for multi-touch integrity sensing for a multi-touch capacitive touch screen is disclosed. By determining the integrity of touches, a distinction is identified between wanted touches, such as via a finger or stylus, and unwanted touches such as via foreign matter, errors, and the like.

公开(公告)号：US20170357371A1

公开(公告)日：2017-12-14

申请号：US15177489

申请日：2016-06-09

Applicant: STMicroelectronics Asia Pacific Pte Ltd

Inventor： Jerry Kim ,  Tae-gil Kang ,  Glen Kang ,  Rooney Kim

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/0418 ,  G06F3/044 ,  G06F2203/04104

Abstract: A method for multi-touch integrity sensing for a multi-touch capacitive touch screen is disclosed. By determining the integrity of touches, a distinction is identified between wanted touches, such as via a finger or stylus, and unwanted touches such as via foreign matter, errors, and the like.