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公开(公告)号：US11596980B2
公开(公告)日：2023-03-07
申请号：US16655928
申请日：2019-10-17
Applicant: LG Display Co., Ltd.
Inventor： YuSeon Kho , Chiwan Kim , Taeheon Kim , Sung-Eui Shin , YongWoo Lee , Kyungyeol Ryu , YongGyoon Jang
Abstract: A vibration generating device includes a first piezoelectric device including at least one slit, a first electrode on a first surface of the first piezoelectric device, and a second electrode on a second surface opposite to the first surface of the first piezoelectric device.
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公开(公告)号：US11435828B2
公开(公告)日：2022-09-06
申请号：US16163262
申请日：2018-10-17
Applicant: LG DISPLAY CO., LTD.
Inventor： ChiWan Kim , TaeHeon Kim , SungEui Shin , YongWoo Lee , KyungYeol Ryu , YuSeon Kho
IPC: G06F3/041 , G06F3/01 , C08G79/025
Abstract: Provided is a touch sensitive device including an electroactive layer formed of an electroactive matrix, wherein the electroactive matrix has a structure in which a piezoelectric ceramic and an electroactive polymer (EAP) are bonded and an electrode disposed on at least one surface of the electroactive layer. According to an exemplary embodiment of the present disclosure, the touch sensitive device uses an electroactive matrix has an excellent transparency, can be made thin, and has a high piezoelectric property so that the light transmittance and the vibration intensity of the touch sensitive device can be improved.
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公开(公告)号：US11412331B2
公开(公告)日：2022-08-09
申请号：US17169056
申请日：2021-02-05
Applicant: LG Display Co., Ltd.
Inventor： YongWoo Lee , Chiwan Kim , Taeheon Kim , Sung-Eui Shin , Kyungyeol Ryu , YuSeon Kho , YongGyoon Jang , Yong-Su Ham , Sungwook Ko
Abstract: A display apparatus includes a display panel configured to display an image and a plurality of vibration generating devices on a rear surface of the display panel, the display panel being at least one of a vibration plate configured to output sound and a vibration plate configured to output a haptic vibration. Each of the plurality of vibration generating devices includes a first electrode under the display panel, a piezoelectric member under the first electrode, a damping member in a periphery the piezoelectric member, and a second electrode under the piezoelectric member.
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公开(公告)号：US11064300B2
公开(公告)日：2021-07-13
申请号：US16431737
申请日：2019-06-05
Applicant: LG Display Co., Ltd.
Inventor： Chiwan Kim , Kyungyeol Ryu , YuSeon Kho , YongGyoon Jang
Abstract: A display apparatus includes: a display panel configured to be rolled or unrolled, at least one vibration module on a rear surface of the display panel, the at least one vibration module being configured to: be rolled or unrolled with the display panel, and vibrate the display panel, and a partition on the rear surface of the display panel, the partition being spaced apart from and surrounding the at least one vibration module, wherein the at least one vibration module includes: a plurality of first portions having a piezoelectric property, and a plurality of second portions between the plurality of first portions, the plurality of second portions having flexibility.
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公开(公告)号：US10951992B2
公开(公告)日：2021-03-16
申请号：US16722713
申请日：2019-12-20
Applicant: LG Display Co., Ltd.
Inventor： YongWoo Lee , Chiwan Kim , Taeheon Kim , Sung-Eui Shin , Kyungyeol Ryu , YuSeon Kho , YongGyoon Jang , Yong-Su Ham , Sungwook Ko
Abstract: A display apparatus includes a display panel configured to display an image and a plurality of vibration generating devices on a rear surface of the display panel, the display panel being at least one of a vibration plate configured to output sound and a vibration plate configured to output a haptic vibration. Each of the plurality of vibration generating devices includes a first electrode under the display panel, a piezoelectric member under the first electrode, a damping member in a periphery the piezoelectric member, and a second electrode under the piezoelectric member.
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Patent Agency Ranking
公开(公告)号：US10860130B2
公开(公告)日：2020-12-08
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 , G06F3/01 , G06F1/16 , G06F3/0354
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.
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57.发明授权公开(公告)号：US10790438B2
公开(公告)日：2020-09-29
申请号：US15822740
申请日：2017-11-27
Applicant: LG DISPLAY CO., LTD.
Inventor： Yong-Su Ham , Taeheon Kim , YongWoo Lee , Kyungyeol Ryu , YuSeon Kho , MyungJin Lim
IPC: H01L41/27 , H01L41/083 , H01L41/45 , H01L41/193 , B32B37/10 , G06F3/02 , G06F3/01 , G06F3/0488 , H01L41/253
Abstract: Provided are a touch sensitive element and a manufacturing method thereof. The manufacturing method for the touch sensitive element according to an embodiment of the present disclosure includes forming an electroactive polymer coating layer by applying an electroactive polymer solution on a substrate; forming an electroactive layer by heating and pressurizing the electroactive polymer coating layer using a hot press roller; and forming an electrode on the electroactive layer.
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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
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.
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59.发明授权公开(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.
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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
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.
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