公开(公告)号：US11750165B2

公开(公告)日：2023-09-05

申请号：US17547553

申请日：2021-12-10

Applicant: LG DISPLAY CO., LTD.

Inventor： JunSeok Oh ,  MinHo Sohn

IPC: H04R3/00 ,  H03G3/30 ,  H04R29/00 ,  H04R1/02 ,  H04R17/00

CPC classification number: H03G3/3036 ,  H04R1/028 ,  H04R3/00 ,  H04R17/00 ,  H04R29/001 ,  G01K2217/00 ,  H03G2201/103 ,  H04R2430/01 ,  H04R2499/15

Abstract: A vibration generating apparatus comprises a vibration apparatus and a vibration driving circuit including a driving signal generator configured to supply a driving signal to the vibration apparatus, wherein the driving signal generator is configured to adjust a frequency-based gain compensation value based on at least one of a circuit internal temperature value of the vibration driving circuit and a temperature prediction value of the vibration apparatus corresponding to a current value of an nth driving signal, compensate for a frequency-based gain value based on the adjusted frequency-based gain compensation value, compensate for an (n+1)th driving signal based on the compensated frequency-based gain value, and supply the compensated (n+1)th driving signal to the vibration apparatus.

公开(公告)号：US11647336B2

公开(公告)日：2023-05-09

申请号：US17314001

申请日：2021-05-06

Applicant: LG Display Co., Ltd.

Inventor： Kyounghwan Kim ,  MinHo Sohn ,  KiDuk Kim ,  Sung-Jin Kang ,  Jeonggoo Kang ,  JaiHyuk Lee

IPC: H04R17/00 ,  H04R1/02

CPC classification number: H04R17/00 ,  H04R1/028 ,  H04R2499/11 ,  H04R2499/15

Abstract: A display apparatus includes a display module including a display panel configured to display an image and a sound generating module on a rear surface of the display panel, the sound generating module includes a vibration generating device, a circuit board on a lower surface of the vibration generating device, a first adhesive member between the circuit board and the vibration generating device, and a second adhesive member between the vibration generating device and the display panel, an elastic modulus of the second adhesive member differing from an elastic modulus of the first adhesive member.

公开(公告)号：US11381672B2

公开(公告)日：2022-07-05

申请号：US16688226

申请日：2019-11-19

Applicant: LG Display Co., Ltd.

Inventor： Seon Man Kim ,  MinHo Sohn ,  JunSeok Oh ,  Sung-Jin Kang ,  Kyounghwan Kim ,  Jeonggoo Kang ,  JaiHyuk Lee

IPC: H04R1/02 ,  H05K5/00 ,  H04M1/03 ,  H04N5/64

Abstract: A display apparatus includes a display module having a display panel configured to display an image; a sound generating device on a rear surface of the display panel and including a first side and a second side perpendicular to the first side and an adhesive member in a partial region of the sound generating device, the adhesive member having a size smaller than one of the first side and the second side of the sound generating device.

公开(公告)号：US11032650B2

公开(公告)日：2021-06-08

申请号：US16711988

申请日：2019-12-12

Applicant: LG Display Co., Ltd.

Inventor： Kyounghwan Kim ,  MinHo Sohn ,  KiDuk Kim ,  Sung-Jin Kang ,  Jeonggoo Kang ,  JaiHyuk Lee

IPC: H04R17/00 ,  H04R1/02

Abstract: A display apparatus includes a display module including a display panel configured to display an image and a sound generating module on a rear surface of the display panel, the sound generating module includes a vibration generating device, a circuit board on a lower surface of the vibration generating device, a first adhesive member between the circuit board and the vibration generating device, and a second adhesive member between the vibration generating device and the display panel, an elastic modulus of the second adhesive member differing from an elastic modulus of the first adhesive member.