公开(公告)号：US20220199896A1

公开(公告)日：2022-06-23

申请号：US17559687

申请日：2021-12-22

Applicant: LG DISPLAY CO., LTD. ,  KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION

Inventor： YongWoo LEE ,  Chiwan KIM ,  Yong-Su HAM ,  YuSeon KHO ,  Seunghyun SUNG ,  Sahn NAHM ,  Dae-Su KIM ,  Su-Hwan GO ,  Jae-Min EUM ,  Ho-Sung SHIN

IPC: H01L41/43 ,  H01L41/047

Abstract: Compositions are disclosed that comprise a piezoelectric material according to Chemical Formula 1: (1−y)(NaaK1-a)(Nb1-x,Sbx)-ySrZrO3+n mol % CuO, wherein 0.01≤y≤0.10, 0.4≤a≤0.6, 0≤x≤0.06, and 0.5≤n≤1.5. The compositions can further comprise a first material, and a second material surrounded by the first material. A piezoelectric device is also described, which includes a piezoelectric device layer including a composition of Chemical Formula 1, and having a first material layer and a second material layer surrounded by the first material layer; a first electrode part disposed on a first surface of the piezoelectric device layer; and a second electrode part disposed on a second surface facing the first surface.

公开(公告)号：US20230269542A1

公开(公告)日：2023-08-24

申请号：US18141791

申请日：2023-05-01

Applicant: LG Display Co., Ltd.

Inventor： Minji KIM ,  Sungwook KO ,  Seunghyun SUNG ,  SeungRyull PARK ,  YoungWook HA

IPC: H04R17/00 ,  H04R1/02

CPC classification number: H04R17/00 ,  H04R1/028 ,  H04R2499/15

Abstract: Discussed is an apparatus including a display panel configured to display an image, a vibration apparatus disposed at a rear surface of the display panel to vibrate the display panel to generate sound, and an adhesive member and a connection member between the display panel and the vibration apparatus. The vibration apparatus can include a vibration portion, a first protection member disposed at a first surface of the vibration portion, and a second protection member disposed at a second surface of the vibration portion, the second surface of the vibration portion being different from the first surface of the vibration portion. The connection member can cover a front surface of the first protection member adjacent to the adhesive member.

公开(公告)号：US20230217187A1

公开(公告)日：2023-07-06

申请号：US18086585

申请日：2022-12-21

Applicant: LG Display Co., Ltd. ,  Korea University Research and Business Foundation

Inventor： YongWoo LEE ,  SeungRyull PARK ,  Yong-Su HAM ,  YuSeon KHO ,  Seunghyun SUNG ,  Sahn NAHM ,  Dae-Su KIM ,  Hosung SHIN ,  Jae Min EUM ,  Su-Hwan GO

IPC: H04R17/00 ,  C04B35/495 ,  C04B35/64 ,  C04B35/626 ,  H10N30/853 ,  H10N30/097 ,  H04R1/02

CPC classification number: H04R17/00 ,  C04B35/495 ,  C04B35/64 ,  C04B35/6261 ,  H01L41/1873 ,  H01L41/43 ,  H04R1/028 ,  C04B2235/3255 ,  C04B2235/3248 ,  C04B2235/6027 ,  C04B2235/6567 ,  C04B2235/85 ,  C04B2235/765 ,  H04R2499/15

Abstract: A piezoelectric material composition, a method of manufacturing the same, a piezoelectric device, and apparatus including the piezoelectric device. The piezoelectric device may include a piezoelectric device layer including a first material and a second material surrounded by the first material, a first electrode portion disposed at a first surface of the piezoelectric device layer, and a second electrode portion disposed at a second surface of the piezoelectric device layer opposite to the first surface, wherein the piezoelectric device layer comprises a piezoelectric material composition represented by Chemical Formula 1: 0.96(NaaK1-a)(Nbb(T1-b))O3-(0.04-x)MZrO3-x(BicAg1-c)ZrO3+d mol % NaNbO3, wherein T is Sb or Ta, M is Sr, Ba or Ca, a is 0.4≤a≤0.6, b is 0.90≤b≤0.98, c is 0.4≤c≤0.6, d is 0≤d≤5.0, and x is 0≤x≤0.04 and wherein T is Sb or Ta and M is Sr, Ba, or Ca.

公开(公告)号：US20230217185A1

公开(公告)日：2023-07-06

申请号：US17980488

申请日：2022-11-03

Applicant: LG Display Co., Ltd.

Inventor： HwaYoul LEE ,  YongWoo LEE ,  Yong-Su HAM ,  Seunghyun SUNG

IPC: H04R17/00

CPC classification number: H04R17/00 ,  H04R2499/15

Abstract: An apparatus includes a vibration portion, a first protection member covering a first surface of the vibration portion, and a second protection member covering a second surface of the vibration portion, wherein at least one of the first protection member and the second protection member includes a first layer including a metal material or an inorganic material.

公开(公告)号：US20230211376A1

公开(公告)日：2023-07-06

申请号：US17992195

申请日：2022-11-22

Applicant: LG Display Co., Ltd.

Inventor： Seunghyun SUNG ,  Yong-Su HAM

IPC: B06B1/06 ,  H04R17/00 ,  H04R1/28

CPC classification number: B06B1/0622 ,  H04R17/005 ,  H04R1/2811 ,  H04R2499/15

Abstract: An apparatus may include a vibration member and a vibration apparatus provided at a rear surface of the vibration member to vibrate the vibration member. The vibration apparatus may include at least one or more first vibration portions and a plurality of second vibration portions different from the at least one or more first vibration portions. The at least one or more first vibration portions may be at a periphery of, or may be adjacent to, the plurality of second vibration portions.

公开(公告)号：US20220208163A1

公开(公告)日：2022-06-30

申请号：US17559977

申请日：2021-12-22

Applicant: LG Display Co., Ltd.

Inventor： Seunghyun SUNG ,  YongWoo LEE ,  Uihyeon JEONG

IPC: G10K9/125 ,  B60R11/02 ,  G06F3/16

Abstract: A vibration device can include a vibration generator including a vibration portion, in which the vibration portion includes a plurality of inorganic portions having piezoelectric characteristics, the plurality of inorganic portions being spaced apart from each other; and an organic portion disposed between at least two inorganic portions among the plurality of inorganic portions, the organic portion having non-piezoelectric characteristics. The organic portion includes a first organic portion and a second organic portion, the first organic portion being disposed between one of the plurality of inorganic portions and the second organic portion. Further, an elastic modulus of the first organic portion is lower than an elastic modulus of the second organic portion.

公开(公告)号：US20240223964A1

公开(公告)日：2024-07-04

申请号：US18513737

申请日：2023-11-20

Applicant: LG Display Co., Ltd.

Inventor： Eun ROH ,  NohJin MYUNG ,  SangWoo JIN ,  Seunghyun SUNG

IPC: H04R17/10 ,  H04R1/02 ,  H04R7/10

CPC classification number: H04R17/10 ,  H04R1/028 ,  H04R7/10 ,  H04R2307/023 ,  H04R2499/15

Abstract: A vibration apparatus includes a vibration member, a cover member, and a vibration generating part between the vibration member and the cover member. At least a portion of vibration generating part is configured to be one body with or directly connected with the vibration member.

公开(公告)号：US20240205612A1

公开(公告)日：2024-06-20

申请号：US18385627

申请日：2023-10-31

Applicant: LG Display Co., Ltd.

Inventor： Seunghyun SUNG

IPC: H04R17/00 ,  H04R1/02 ,  H04R7/06

CPC classification number: H04R17/00 ,  H04R1/028 ,  H04R7/06 ,  H04R2499/15

Abstract: A vibration apparatus includes a first cover member, a second cover member, and a vibration part disposed between the first cover member and the second cover member. The vibration part includes a vibration layer including a plurality of first portions and a second portion disposed between the plurality of first portions. The plurality of first portions can include a transparent single crystalline piezoelectric material, and the second portion can include a transparent organic material. The vibration part can further include a first electrode layer disposed at a first surface of the vibration layer, and a second electrode layer disposed at a second surface of the vibration layer being different from the first surface of the vibration layer.

公开(公告)号：US20230158546A1

公开(公告)日：2023-05-25

申请号：US17975760

申请日：2022-10-28

Applicant: LG Display Co., Ltd.

Inventor： Seunghyun SUNG ,  YongWoo LEE

IPC: B06B1/06 ,  H01L41/047 ,  H04R17/10 ,  H01L41/09 ,  H01L41/083

CPC classification number: B06B1/0629 ,  H01L41/0474 ,  H04R17/10 ,  H01L41/0913 ,  H01L41/083 ,  H04R2499/15

Abstract: An apparatus may include a vibration member and a vibration device configured to vibrate the vibration member. The vibration device may be configured to comprise a first vibration portion and a second vibration portion which is different from the first vibration portion.

公开(公告)号：US20220201399A1

公开(公告)日：2022-06-23

申请号：US17532487

申请日：2021-11-22

Applicant: LG Display Co., Ltd.

Inventor： Minji KIM ,  Sungwook KO ,  Seunghyun SUNG ,  SeungRyull PARK ,  YoungWook HA

IPC: H04R17/00 ,  H04R1/02

Abstract: Discussed is an apparatus including a display panel configured to display an image, a vibration apparatus disposed at a rear surface of the display panel to vibrate the display panel and to generate sound via the display panel, and an adhesive member and a connection member between the display panel and the vibration apparatus.