公开(公告)号：US11545648B2

公开(公告)日：2023-01-03

申请号：US16995305

申请日：2020-08-17

Applicant: LG Display Co., LTD.

Inventor： SoJung Lee ,  JongSung Kim ,  Seungkyeom Kim ,  Sumin Lee

IPC: H01L51/52 ,  H01L27/32

Abstract: According to an aspect of the present disclosure, a light emitting display device includes a substrate defined by a plurality of sub-pixels and a first overcoating layer disposed on the substrate, a connection electrode and a sacrificial layer disposed on the first overcoating layer, a first electrode disposed on the connection electrode, a second overcoating layer disposed on the sacrificial layer and including an opening that exposes a portion of the first electrode, a dummy first electrode disposed on a top surface of the second overcoating layer and a side surface of the opening and separated from the first electrode, a bank layer covering the dummy first electrode and a portion of the first electrode, and an emission layer and a second electrode disposed on the first electrode and the bank layer.

公开(公告)号：US10082907B2

公开(公告)日：2018-09-25

申请号：US15829671

申请日：2017-12-01

Applicant: LG Display Co., Ltd.

Inventor： Seungkyeom Kim ,  SungChul Kim ,  Sungsu Han ,  JiYeon Park

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

CPC classification number: G06F3/0416 ,  G06F3/0412 ,  G06F3/044

Abstract: A driving circuit, a touch display device, and a method of driving the touch display device. A plurality of first electrodes are disposed within a display panel. A second electrode is disposed outside of the display panel. A driving circuit detects at least one of a touch position and a touching force of a touch by sequentially applying a first electrode driving signal to at least one first electrode among the plurality of first electrodes and applying a second electrode driving signal to the second electrode in a touch driving period. When a user touches a screen, not only can a touch position be sensed, but also a touching force with which the user presses the screen can also be efficiently sensed. This provides a range of functions that existing touch position-detecting technologies have failed to provide.

公开(公告)号：US09864459B2

公开(公告)日：2018-01-09

申请号：US15222876

申请日：2016-07-28

Applicant: LG Display Co., Ltd.

Inventor： Seungkyeom Kim ,  SungChul Kim ,  Sungsu Han ,  JiYeon Park

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

CPC classification number: G06F3/0416 ,  G06F3/0412 ,  G06F3/044

Abstract: A driving circuit, a touch display device, and a method of driving the touch display device. A plurality of first electrodes are disposed within a display panel. A second electrode is disposed outside of the display panel. A driving circuit detects at least one of a touch position and a touching force of a touch by sequentially applying a first electrode driving signal to at least one first electrode among the plurality of first electrodes and applying a second electrode driving signal to the second electrode in a touch driving period. When a user touches a screen, not only can a touch position be sensed, but also a touching force with which the user presses the screen can also be efficiently sensed. This provides a range of functions that existing touch position-detecting technologies have failed to provide.

公开(公告)号：US09753589B2

公开(公告)日：2017-09-05

申请号：US14463883

申请日：2014-08-20

Applicant: LG Display Co., Ltd.

Inventor： Juhan Kim ,  Seungkyeom Kim

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/044 ,  G06F3/0412

Abstract: A touch sensing system is discussed. The touch sensing system includes sensor signal lines connected to segment electrodes, sensor enable lines to which a sensor enable pulse is applied, sensor thin film transistors (TFTs) which are turned on in response to the sensor enable pulse and supply a sensing pulse from the sensor signal lines to the segment electrodes, and a touch sensing circuit which applies the sensor enable pulse to the sensor enable lines, simultaneously turns on the two or more sensor TFTs, and applies the sensing pulse to the sensor signal lines.