公开(公告)号：US11977703B2

公开(公告)日：2024-05-07

申请号：US18174523

申请日：2023-02-24

Applicant: Samsung Display Co., LTD.

Inventor： Jin Woo Park ,  Min Hong Kim ,  Tae Joon Kim ,  Il Ho Lee ,  Wan Kee Jun

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/04166 ,  G06F3/0412 ,  G06F3/0446

Abstract: A touch detection module, includes: a plurality of driving electrodes arranged side by side; a plurality of sensing electrodes staggered with respect to the driving electrodes; and a touch driving circuit configured to supply touch driving signals to the plurality of driving electrodes and to detect touch detection signals through the plurality of sensing electrodes to identify touch position coordinates, wherein the touch driving circuit is configured: to vary frequency modulation parameter set values in response to a change in a frequency of reference clocks, and to generate and supply a frequency of the touch driving signals by using the reference clocks and a varied frequency modulation parameter set value.

公开(公告)号：US11720194B2

公开(公告)日：2023-08-08

申请号：US17668966

申请日：2022-02-10

Applicant: Samsung Display Co., Ltd.

Inventor： Jung Mok Park ,  Min Hong Kim ,  Tae Joon Kim ,  Jin Woo Park ,  Wan Kee Jun ,  Hyun Wook Cho

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/0412 ,  G06F3/0446 ,  G06F3/0448 ,  G06F2203/04103 ,  G06F2203/04111 ,  G06F2203/04112

Abstract: The present disclosure relates to a touch detection device that can increase the emission efficiency while maintaining touch detecting performance by improving the structure of touch electrodes. According to an embodiment of the disclosure, a touch detection device comprising a first touch insulating layer, a connection electrode disposed on the first touch insulating layer, a second touch insulating layer disposed on the connection electrode, a driving electrode disposed on a second touch insulating layer and connected to the connection electrode through at least one touch contact hole, and a sensing electrode disposed on the second touch and spaced apart from the driving electrode, wherein at least one of the driving electrode and the sensing electrode a conductive metal electrode and a metal oxide electrode which is oxidized.