Display device

Patent metadata

Field	Value
Publication number	US-12523901-B2
Application number	US-202418830994-A
Country	US
Kind code	B2
Filing date	Sep 11, 2024
Priority date	Mar 21, 2022
Publication date	Jan 13, 2026
Grant date	Jan 13, 2026

Abstract

Provided is a display apparatus. The display apparatus includes: a liquid crystal display panel and a backlight module, wherein a first sealed air cavity is formed inside the liquid crystal display panel, and the backlight module is located on one side of the liquid crystal display panel and forms a second sealed air cavity with the liquid crystal display panel; and a sound production board and a sound production exciter, wherein the sound production board is fixed onto the surface of the backlight module away from the liquid crystal display panel, a vibration output terminal of the sound production exciter is fixed onto the surface of the sound production board away from the backlight module, and the sound production exciter is used for exciting, by means of the vibration output terminal, the sound production board to vibrate, so as to drive the backlight module to vibrate.

First claim

What is claimed is:

1 . A display apparatus, comprising:
a liquid crystal display panel and a backlight module, wherein a first sealed air cavity is formed inside the liquid crystal display panel, and the backlight module is located on a side of the liquid crystal display panel and forms a second sealed air cavity with the liquid crystal display panel; a sound board and a sound driver, wherein the sound board is fixed to a surface of the backlight module away from the liquid crystal display panel, and a vibration output terminal of the sound driver is fixed to a surface of the sound board away from the backlight module, and the sound driver is configured to drive the sound board to vibrate through the vibration output terminal to drive the backlight module to vibrate.

2 . The display apparatus according to claim 1 , wherein the sound board is fixed to the backlight module through a first adhesion buffer structure, and the vibration output terminal is fixed to the sound board through a second adhesion buffer structure.

3 . The display apparatus according to claim 1 , wherein the liquid crystal display panel comprises a liquid crystal film layer and an optical diffusion film layer, a frame position of the liquid crystal display panel between the liquid crystal film layer and the optical diffusion film layer is provided with a first annular sealed structure, and the liquid crystal film layer and the optical diffusion film layer form the first sealed air cavity through the first annular sealed structure;
a frame position of the liquid crystal display panel between the backlight module and the liquid crystal display panel is provided with a second annular sealed structure, and the backlight module and the liquid crystal display panel form the second sealed air cavity through the second annular sealed structure; wherein the first annular sealed structure comprises a plurality of low-frequency airflow channels, and the plurality of low-frequency airflow channels are configured to connect the first sealed air cavity with an external environment where the display apparatus is located; wherein along a plane parallel to the liquid crystal display panel, the first annular sealed structure comprises a plurality of rows of channel forming structures arranged along a first direction, and each row of channel forming structures comprises a plurality of barrier structures arranged at intervals of a set distance, and the barrier structures in different rows of channel forming structures are staggered; wherein the first direction is perpendicular to an extension direction of a frame of the liquid crystal display panel.

4 . The display apparatus according to claim 1 , further comprising:
a plurality of elastic supports, arranged between the backlight module and the liquid crystal display panel in an interference manner, wherein a side of the backlight module adjacent to the liquid crystal display panel comprises a plurality of light-emitting structures, and the plurality of elastic supports are located between the light-emitting structures; and/or further comprising: a plurality of elastic supports, arranged between the sound board and the liquid crystal display panel in an interference manner, wherein a side of the backlight module adjacent to the liquid crystal display panel comprises a plurality of light-emitting structures, and the plurality of elastic supports are located between the light-emitting structures.

5 . The display apparatus according to claim 4 , further comprising: a rear shell;
wherein the rear shell is located on a side of the sound driver away from the sound board, the sound driver comprises a vibration transmission structure, and the sound driver is configured to drive the rear shell to vibrate through the vibration transmission structure.

6 . The display apparatus according to claim 5 , wherein the vibration transmission structure is provided with a vibration stabilizing structure, the vibration stabilizing structure is configured to balance a reaction force exerted by the rear shell to the vibration transmission structure to drive the vibration transmission structure to vibrate along a central axis of the sound driver;
the vibration stabilizing structure comprises a plurality of first spring structures, the plurality of first spring structures form a corrugated concentric structure, one end of the first spring structure is fixed to the vibration transmission structure, the other end of the first spring structure is fixed to the sound driver.

7 . The display apparatus according to claim 5 , wherein the vibration transmission structure is provided with a high-frequency filter structure, and the high-frequency filter structure is configured to filter out high-frequency vibration transmitted from the vibration transmission structure to the rear shell;
the high-frequency filter structure comprises a plurality of second spring structures, one end of the second spring structures is fixed to the vibration transmission structure, and the other end of the second spring structures is fixed to the rear shell.

8 . The display apparatus according to claim 5 , wherein the vibration transmission structure is provided with a high-frequency filter structure, and the high-frequency filter structure is configured to filter out high-frequency vibration transmitted from the vibration transmission structure to the rear shell;
the rear shell is provided with a first through hole corresponding to a position of the sound driver, a part of the vibration transmission structure is located in the first through hole, the high-frequency filter structure is a mechanical compliance structure and the vibration transmission structure is fixed to the rear shell at an edge of the first through hole through the mechanical compliance structure.

9 . The display apparatus according to claim 4 , further comprising: a rear shell;
wherein a frame of the display apparatus is provided with a plurality of high-frequency speakers, and the plurality of high-frequency speakers are symmetrically distributed about a central axis of the display apparatus.

10 . The display apparatus according to claim 4 , further comprising: a rear shell;
wherein a frame of the display apparatus is provided with a plurality of high-frequency speakers, and the plurality of high-frequency speakers are symmetrically distributed about a central axis of the display apparatus.

11 . The display apparatus according to claim 9 , wherein a sound output surface of the high-frequency speaker is provided with a phase plug, and the phase plug is configured to make the high-frequency speaker produce sound in a direction where the liquid crystal display panel is away from the rear shell.

12 . The display apparatus according to claim 9 , further comprising: a base;
wherein the base comprises an inclined portion facing a direction where the liquid crystal display panel is away from the rear shell, a sound structure is provided inside the inclined portion, and a surface of the inclined portion corresponding to a position where the sound structure is located is provided with a plurality of sound holes.

13 . The display apparatus according to claim 9 , further comprising:
a second sound driver, wherein a second vibration output terminal of the second sound driver is fixed to the rear shell, and the second sound driver is configured to drive the rear shell to vibrate through the second vibration output terminal.

14 . The display apparatus according to claim 9 , wherein the rear shell is provided with a plurality of reinforcing ribs on a surface of the rear shell adjacent to a middle fra

Assignees

• Hisense Visual Tech Co Ltd

Inventors

• Wang Haiying
• Zhang Chan
• Li Kuibao
• Zhou Hui
• Zhang Dengyin
• Li Jinlong
• Xu Zhiqiang
• Wang Chao
• Wang Yingrui
• Wang Tianhua
• Jiang Yuanen
• Cheng Xu
• Gao Qingmei
• Lei Peili

Classifications

• H04R9/066

  using the principle of inertia · CPC title

• H04R2499/15

  Transducers incorporated in visual displaying devices, e.g. televisions, computer displays, laptops · CPC title

• H04R9/06

  Loudspeakers · CPC title

• H04R1/2896

  for loudspeaker transducers · CPC title

• H04R1/028

  associated with devices performing functions other than acoustics, e.g. electric candles · CPC title