公开(公告)号：US20190012504A1

公开(公告)日：2019-01-10

申请号：US15875188

申请日：2018-01-19

Applicant: Samsung Display Co., Ltd.

Inventor： Ki Seo KIM ,  Jae-Kyoung KIM ,  Byung Han YOO

IPC: G06K9/00 ,  G06K9/40

CPC classification number: G06K9/0002 ,  G06K9/0008 ,  G06K9/40

Abstract: A sensor pixel includes: a reference capacitor including a first end connected to a driving signal line and a second end connected to a first node; a touch capacitor including one electrode connected to the first node, wherein capacitance of the touch capacitor changes by touching of an external object; a first transistor including a first end connected to an initialization voltage line, a second end connected to the first node, and a control end connected to an initialization line; a second transistor including a first end for receiving a common voltage, a second end for outputting a current generated based on the common voltage, and a control end connected to the first node; and a third transistor including a first end connected to the second end of the second transistor, a second end connected to a sensing line, and a control end connected to a scan line.

公开(公告)号：US20180276442A1

公开(公告)日：2018-09-27

申请号：US15908153

申请日：2018-02-28

Applicant: Samsung Display Co., Ltd.

Inventor： Jae Kyoung KIM ,  Ki Seo KIM ,  Won Sang PARK ,  Jong In BAEK

IPC: G06K9/00 ,  H01L27/12 ,  G06F3/044

CPC classification number: G06K9/0002 ,  G06F3/0416 ,  G06F3/044 ,  G06F2203/04103 ,  G06K9/00053 ,  H01L27/1255 ,  H01L27/1262

Abstract: A fingerprint sensor according to an exemplary embodiment of the present inventive concept includes a sensor substrate; a plurality of sensor pixels sensing a capacitance change corresponding to a touch of a user, wherein each of the sensor pixels includes a sensor electrode; and a sensor protection layer disposed on the sensor substrate and the plurality of sensor pixels, wherein the sensor protection layer may include a first region having a first permittivity and a second region having a second permittivity less than the first permittivity.

公开(公告)号：US20170371462A1

公开(公告)日：2017-12-28

申请号：US15619696

申请日：2017-06-12

Applicant: Samsung Display Co., Ltd.

Inventor： Ki Seo KIM ,  Jae Kyoung KIM

IPC: G06F3/041 ,  G06K9/00

Abstract: A touch sensor including a substrate and a plurality of sensor pixels positioned on the substrate and connected to sensor scan lines and output lines. At least one of the sensor pixels is connected to an ith sensor scan line and a jth output line (where i is an integer of no less than 2 and j is a natural number) and includes a sensor electrode, a first transistor having a gate electrode connected to the sensor electrode to control a current output through the jth output line, a second transistor having a gate electrode connected to the ith sensor scan line and connected between a reference voltage line and the first transistor, and a capacitor electrode forming a first capacitor with the sensor electrode and connected to the ith sensor scan line.