公开(公告)号：US10674281B2

公开(公告)日：2020-06-02

申请号：US16029209

申请日：2018-07-06

Applicant: LG DISPLAY CO., LTD.

Inventor： Taeheon Kim ,  Chiwan Kim ,  Sung-Eui Shin ,  YongWoo Lee ,  Kyungyeol Ryu ,  YuSeon Kho

IPC: H04R19/02 ,  H04R1/02 ,  H04R9/06 ,  H04R9/02

Abstract: Discussed are a film speaker and a display device. The film speaker includes an electroactive layer including a first surface and a second surface opposite to the first surface, and further including a plurality of concave portions; and a first electrode and a second electrode disposed on at least one of the first surface and the second surface. Therefore, the sound generated in the film speaker may be further amplified and the sound pressure level may be improved.

公开(公告)号：US10318051B2

公开(公告)日：2019-06-11

申请号：US15394395

申请日：2016-12-29

Applicant: LG DISPLAY CO., LTD.

Inventor： Seulgi Choi ,  Yong-Su Ham ,  Taeheon Kim ,  YongWoo Lee ,  YuSeon Kho ,  MyungJin Lim

IPC: G06F3/044 ,  G06F3/041 ,  G06F3/01 ,  H01L41/09 ,  H01L41/45 ,  H01L41/047 ,  H01L41/113 ,  H01L41/193 ,  H01L41/253 ,  C08J9/26

Abstract: Provided are a contact sensitive device, a display apparatus including the same, and a method of manufacturing the same. The contact sensitive device includes an electroactive layer formed of an electroactive polymer having a plurality of nano pores and an electrode disposed on at least one surface of the electroactive layer. The electroactive layer has a β-phase structure and improved piezoelectricity without performing a stretching process or a polling process.

公开(公告)号：US20190079630A1

公开(公告)日：2019-03-14

申请号：US16130770

申请日：2018-09-13

Applicant: LG Display Co., Ltd.

Inventor： YuSeon Kho ,  Chiwan Kim ,  Taeheon Kim ,  Sung-Eui Shin ,  YongWoo Lee ,  Kyungyeol Ryu

IPC: G06F3/041 ,  G06F1/16 ,  G06F3/01

Abstract: A display device to an embodiment of the present disclosure comprises a display panel including an active area having a bending area, a first touch sensitive element which overlaps the active area of the display panel and includes a first electroactive layer, a bending member which is disposed below the display panel and overlaps at least the bending area, and a second touch sensitive element including a second electroactive layer which covers the bending member. Therefore, in the bending area where the stress due to the bending is concentrated, the lifespan and the driving stability of the first touch sensitive element and the second touch sensitive element may be improved.

公开(公告)号：US10168781B2

公开(公告)日：2019-01-01

申请号：US15392401

申请日：2016-12-28

Applicant: LG Display Co., Ltd.

Inventor： Taeheon Kim ,  Yong-Su Ham ,  YongWoo Lee ,  YuSeon Kho ,  MyungJin Lim ,  Seulgi Choi

IPC: G06F3/01 ,  G06F3/041 ,  H01L41/22 ,  H01L27/32 ,  B32B27/30 ,  G02F1/1333

Abstract: Provided are a touch sensitive device and a display device including the same. The touch sensitive device includes: a first electroactive layer formed of a ferroelectric polymer; a plurality of electrodes disposed on at least one surface of the first electroactive layer; and a second electroactive layer in contact with the plurality of electrodes and the first electroactive layer and formed of an electroactive polymer. A coating layer having a low refractive index and formed of an electroactive polymer is formed on the first electroactive layer formed of a ferroelectric polymer having a low light transmittance, and, thus, a vibration level and a light transmittance of the touch sensitive device can be improved simultaneously.

公开(公告)号：US20180150138A1

公开(公告)日：2018-05-31

申请号：US15820055

申请日：2017-11-21

Applicant: LG Display Co., Ltd.

Inventor： TaeHeon Kim ,  SuSeok Choi ,  YongSu Ham ,  YongWoo Lee ,  KyungYeol Ryu ,  YuSeon Kho

IPC: G06F3/01 ,  G06F3/044

CPC classification number: G06F3/016 ,  G06F3/041 ,  G06F3/044 ,  G06F2203/04111 ,  G06F2203/04112

Abstract: The touch sensitive element according to an exemplary embodiment of the present disclosure includes an electroactive layer, an electrode, and a plurality of beads. The electroactive layer includes an electroactive polymer. The electrode is disposed on at least one surface of the electroactive layer. The plurality of beads is dispersed in the electroactive layer and has a diameter larger than the thickness of the electroactive layer.

公开(公告)号：US09727157B2

公开(公告)日：2017-08-08

申请号：US14970154

申请日：2015-12-15

Applicant: LG DISPLAY CO., LTD.

Inventor： Yong-Su Ham ,  SuSeok Choi ,  Taeheon Kim ,  YongWoo Lee ,  MyungJin Lim ,  Seulgi Choi

IPC: G06F3/041 ,  G06F3/047 ,  G06F3/01

CPC classification number: G06F3/0412 ,  G06F3/016 ,  G06F3/0416 ,  G06F3/047 ,  G06F2203/04102 ,  G06F2203/04107

Abstract: A touch sensitive device, a display device including the touch sensitive device and a method of driving the same are discussed. The touch sensitive device can include an electroactive layer including an electroactive polymer; and one or more first electrodes and one or more second electrodes are disposed on only one surface of the electroactive layer, in which the first and the second electrodes include a conductive material. The first and the second electrodes of the touch sensitive device can be disposed only on one surface of the electroactive layer, a driving voltage of the touch sensitive device can be reduced and transmissivity can be improved.

公开(公告)号：US20160188119A1

公开(公告)日：2016-06-30

申请号：US14979952

申请日：2015-12-28

Applicant: LG Display Co., Ltd

Inventor： Yong-Su Ham ,  SuSeok Choi ,  Taeheon Kim ,  YongWoo Lee ,  MyungJin Lim ,  Seulgi Choi

IPC: G06F3/042 ,  G06F3/041

CPC classification number: G06F3/044 ,  G02B5/3083 ,  G02F1/0131 ,  G06F3/016 ,  G06F2203/04107 ,  H01L27/323 ,  H01L41/1132 ,  H01L41/193 ,  H01L41/47 ,  H01L51/5281

Abstract: Provided is a display device. The display device includes a display panel, a contact sensitive device on the display panel, and a linear polarizer on the contact sensitive device. The contact sensitive device includes an electro-active layer which is uniaxially elongated and configured to retard a phase of incident light. Since the display device includes the contact sensitive device having the electro-active layer configured to retard the phase of the incident light, a separate phase retardation film for suppressing external light reflection may be omitted. As a result, the thickness of the display device may be decreased and manufacturing cost of the display device may be reduced.

Abstract translation: 提供了一种显示装置。 显示装置包括显示面板，显示面板上的接触敏感装置以及接触敏感装置上的线性偏振器。 所述接触敏感装置包括单轴拉伸并被配置为延迟入射光相位的电活性层。 由于显示装置包括具有延迟入射光的相位的电活性层的接触敏感装置，因此可以省略用于抑制外部光反射的单独的相位延迟膜。 结果，显示装置的厚度可能降低，并且显示装置的制造成本可能降低。