公开(公告)号：US09851836B2

公开(公告)日：2017-12-26

申请号：US14736373

申请日：2015-06-11

Applicant: PIXART IMAGING INC.

Inventor： Han-Shu Lin ,  Yi-Hsien Ko

IPC: G06F3/041 ,  G06F3/044 ,  G06F3/045 ,  G09G5/00

CPC classification number: G06F3/0416 ,  G06F3/044 ,  G06F3/045

Abstract: There is provided a touch display device including a display and a touch control device. The display includes a glass substrate. The touch control device is attached to the glass substrate and includes a touch zone, a fingerprint detection zone and a control circuit. The touch zone includes a matrix of first detecting cells arranged at a first grid distance. The fingerprint detection zone includes a matrix of second detecting cells arranged at a second grid distance. The control circuit is configured to control detection operations of the touch zone and the fingerprint detection zone and to adjust an effective grid distance of the fingerprint detection zone according to a first detected touch position.

公开(公告)号：US10379638B2

公开(公告)日：2019-08-13

申请号：US14593043

申请日：2015-01-09

Applicant: PIXART IMAGING INC.

Inventor： Chi-Chieh Liao ,  Han-Shu Lin ,  Tse-Chung Su

IPC: G09G1/00 ,  G06F3/038 ,  G06F3/041 ,  G06F3/0354 ,  G06F3/02

Abstract: A method of determining an adaptive DPI curve includes the steps of: detecting, by a sensing element, an object on a touch surface and outputting a detected frame; calculating, by a processing unit, a contact range according to the detected frame; and determining a DPI curve according to the contact range.

公开(公告)号：US10055054B2

公开(公告)日：2018-08-21

申请号：US15727001

申请日：2017-10-06

Applicant: PixArt Imaging Inc.

Inventor： Han-Shu Lin ,  Yi-Hsien Ko

IPC: G06F3/041 ,  G06F3/044 ,  G06F3/045

CPC classification number: G06F3/0416 ,  G06F3/044 ,  G06F3/045

Abstract: There is provided a touch display device including a display and a touch control device. The display includes a glass substrate. The touch control device is attached to the glass substrate and includes a touch zone, a fingerprint detection zone and a control circuit. The touch zone includes a matrix of first detecting cells arranged at a first grid distance. The fingerprint detection zone includes a matrix of second detecting cells arranged at a second grid distance. The control circuit is configured to control detection operations of the touch zone and the fingerprint detection zone and to adjust an effective grid distance of the fingerprint detection zone according to a first detected touch position.