Apparatus

Patent metadata

Field	Value
Publication number	US-11849281-B2
Application number	US-202217878906-A
Country	US
Kind code	B2
Filing date	Aug 2, 2022
Priority date	Dec 23, 2021
Publication date	Dec 19, 2023
Grant date	Dec 19, 2023

Abstract

An apparatus includes a display member configured to display an image, a front member at a front surface of the display member, a vibration apparatus at a rear surface of the display member, and an adhesive member between the display member and the front member, the adhesive member including a piezoelectric material.

First claim

What is claimed is:

1. An apparatus, comprising:
a display member configured to display an image;
a front member at a front surface of the display member;
a vibration apparatus at a rear surface of the display member;
at least one rear adhesive member between the display member and the vibration apparatus; and
at least one front adhesive member between the display member and the front member,
wherein the at least one rear adhesive member and the at least one front adhesive member include piezoelectric materials having different contents.

2. The apparatus of claim 1 , wherein the vibration apparatus comprises:
a vibration portion;
a first electrode portion at a first surface of the vibration portion; and
a second electrode portion at a surface differing from the first surface of the vibration portion.

3. The apparatus of claim 2 , wherein the vibration portion comprises one or more of a piezoelectric inorganic material and a piezoelectric organic material.

4. The apparatus of claim 2 , wherein the vibration portion comprises a plurality of first portions and a plurality of second portions between the plurality of first portions,
wherein the plurality of second portions comprises an organic material, and
wherein each of the plurality of first portions comprises one or more of a piezoelectric inorganic material and a piezoelectric organic material.

5. The apparatus of claim 2 , further comprising:
a first cover member at the first electrode portion; and
a second cover member at the second electrode portion.

6. The apparatus of claim 1 , wherein:
the display member comprises:
a display panel including a plurality of pixels configured to display an image;
a first supporting member between a rear surface of the display panel and the vibration apparatus;
a second supporting member between the first supporting member and the vibration apparatus; and
a polarization member between a front surface of the display panel and the front member,

the at least one rear adhesive member comprises:
a first adhesive member between the first supporting member and the second supporting member; and
a second adhesive member between the display panel and the first supporting member,

the at least one front adhesive member comprises:
a third adhesive member between the display panel and the polarization member; and
a fourth adhesive member between the polarization member and the front member, and

one or more of the first to fourth adhesive members comprise a piezoelectric material among the piezoelectric materials having different contents.

7. The apparatus of claim 6 , wherein the piezoelectric material is added to the first to fourth adhesive members by different contents.

8. The apparatus of claim 7 , wherein a content of the piezoelectric material included in each of the first to fourth adhesive members is reduced progressively toward the front member from the vibration apparatus.

9. The apparatus of claim 1 , wherein:
the display member comprises:
a display panel including a plurality of pixels configured to display an image; and
a polarization member between a front surface of the display panel and the front member,

the at least one front adhesive member is between the polarization member and the front member.

10. The apparatus of claim 1 , wherein:
the display member comprises:
a display panel including a plurality of pixels configured to display an image; and
a polarization member between a front surface of the display panel and the front member,

the at least one front adhesive member comprises:
a third adhesive member between the display panel and the polarization member; and
a fourth adhesive member between the polarization member and the front member, and

one or more of the third and fourth adhesive members comprise a piezoelectric material among the piezoelectric materials having different contents.

11. The apparatus of claim 10 , wherein:
each of the third and fourth adhesive members comprises the piezoelectric material; and
contents of the piezoelectric materials respectively in the third and fourth adhesive members differ from each other.

12. The apparatus of claim 11 , wherein a content of the piezoelectric material in the third adhesive member is less than a content of the piezoelectric material in the fourth adhesive member.

13. The apparatus of claim 12 , further comprising:
a first layer between a front surface of the display panel and the front member; and
a fifth adhesive member between the front member and the first layer,
wherein the fourth adhesive member is between the polarization member and the first layer.

14. The apparatus of claim 13 , wherein the fifth adhesive member comprises one of the piezoelectric materials.

15. The apparatus of claim 13 , wherein:
each of the third to fifth adhesive members comprises one of the piezoelectric materials; and
contents of the piezoelectric materials included respectively in the third to fifth adhesive members differ from one another.

16. The apparatus of claim 15 , wherein a content of the piezoelectric material included in each of the third to fifth adhesive members is reduced progressively toward the front member from the vibration apparatus.

17. An apparatus, comprising:
a display member including a plurality of pixels arranged over a flexible substrate;
a vibration apparatus under the display member;
a front member at the display member;
at least one first vibration transfer member between the display member and the vibration apparatus; and
at least one second vibration transfer member between the display member and the front member,
wherein the at least one first vibration transfer member and the at least one second vibration transfer member include piezoelectric materials having different contents.

18. The apparatus of claim 17 , wherein each of the front member, the display member, and the vibration apparatus is capable of being bent in a curved shape.

19. The apparatus of claim 17 , wherein:
the vibration apparatus comprises:
a plurality of second portions including an organic material; and
a plurality of first portions between the plurality of second portions, and

each of the plurality of first portions comprises one or more of a piezoelectric inorganic material and a piezoelectric organic material.

20. The apparatus of claim 17 , further comprising:
at least one rear adhesive member between the display member and the vibration apparatus; and
at least one front adhesive member between the display member and the front member,
wherein the at least one rear adhesive member comprises the at least one first vibration transfer member, and
wherein the at least one front adhesive member comprises the at least one second vibration transfer member.

21. The apparatus of claim 20 , wherein:
the display member comprises:
a display panel including a plurality of pixels configured to display an image;
a first supporting member between a rear surface of the display panel and the vibration apparatus;
a second supporting member between the first supporting member and the vibration apparatus; and
a polarization member between a front surface of the display panel and the front member,

the at least one rear adhesive member comprises:
a first adhesive member between the first supporting member and the second supporting member; and
a second adhesive member between the display panel and the first supporting member,

the at least one front adhesive memb

Assignees

• Lg Display Co Ltd

Inventors

• Kim Giyoun
• Roh Eun

Classifications

• H04R17/00 Primary

  Piezoelectric transducers; Electrostrictive transducers (piezoelectric or electrostrictive elements in general H10N30/00; details of piezoelectric or electrostrictive motors, generators or positioners {H10N30/00}) · CPC title

• H04R1/028

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

• H04R2499/15

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

• H05K5/0018

  having an electronic display · CPC title

• H04R1/323 Primary

  for loudspeakers (H04R1/34 and H04R1/40 take precedence) · CPC title