Apparatus

Patent metadata

Field	Value
Publication number	US-12200442-B2
Application number	US-202318387828-A
Country	US
Kind code	B2
Filing date	Nov 7, 2023
Priority date	Dec 23, 2021
Publication date	Jan 14, 2025
Grant date	Jan 14, 2025

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 shapes.

2. The apparatus of claim 1 , wherein the piezoelectric materials include at least one of a particle shape and a wire shape, and a content of the particle shape and/or the wire shape is differently adjusted in the at least one rear adhesive member and the at least one front adhesive member.

3. The apparatus of claim 2 , wherein a content of the particle shape in the piezoelectric material included in each of the at least one rear adhesive member and the at least one front adhesive member is increased progressively toward the front member from the vibration apparatus.

4. The apparatus of claim 2 , wherein a content of the wire shape in the piezoelectric material included in each of the at least one rear adhesive member and the at least one front adhesive member is reduced progressively toward the front member from the vibration apparatus.

5. 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.

6. The apparatus of claim 5 , wherein:
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; and

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.

7. The apparatus of claim 6 , wherein:
the piezoelectric materials include at least one of a particle shape and a wire shape; and
one or more of the first to fourth adhesive members comprise a piezoelectric material among the piezoelectric materials having different contents of the particle shape and/or the wire shape.

8. The apparatus of claim 7 , wherein the piezoelectric material is added to the first to fourth adhesive members by different contents of the particle shape and/or the wire shape.

9. The apparatus of claim 8 , wherein:
a content of the particle shape in the piezoelectric material included in each of the first to fourth adhesive members is increased progressively toward the front member from the vibration apparatus; and
a content of the wire shape in the piezoelectric material included in each of the first to fourth adhesive members is reduced progressively toward the front member from the vibration apparatus.

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; and

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

11. 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.

12. The apparatus of claim 11 , wherein 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.

13. The apparatus of claim 12 , wherein:
the piezoelectric materials include at least one of a particle shape and a wire shape; and
one or more of the third and fourth adhesive members comprise a piezoelectric material among the piezoelectric materials having different contents of the particle shape and/or the wire shape.

14. The apparatus of claim 13 , wherein:
each of the third and fourth adhesive members comprises the piezoelectric material; and
contents of the particle shape and/or the wire shape in the piezoelectric materials respectively in the third and fourth adhesive members differ from each other.

15. The apparatus of claim 14 , wherein:
a content of the particle shape in the piezoelectric material included in the third adhesive member is less than a content of the particle shape in the piezoelectric material included in the fourth adhesive member; and
a content of the wire shape in the piezoelectric material included in the third adhesive member is greater than a content of the wire shape in the piezoelectric material included in the fourth adhesive member.

16. The apparatus of claim 15 , 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.

17. The apparatus of claim 16 , wherein:
each of the third to fifth adhesive members comprises one of the piezoelectric materials; and
contents of the particle shape and/or the wire shape in the piezoelectric materials included respectively in the third to fifth adhesive members differ from one another.

18. The apparatus of claim 17 , wherein:
a content of the particle shape in the piezoelectric material included in each of the third to fifth adhesive members is increased progressively toward the front member from the vibration apparatus; and
a content of the wire shape in the piezoelectric material included in each of the third to fifth adhesive members is reduced progressively toward the front member from the vibration apparatus.

19. 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.

20. The apparatus of claim 19 , wherein the vibration portion comprises one or more of a piezoelectric inorganic material and a piezoelectric organic material.

21. The apparatus of claim 19 , wherein:
the vibration portion comprises a plurality of first portions and a plurality of second portions between the plurality of first portions;
the plurality of second portions comprises an organic material; and
each of the plurality of first portions comprises one or more of a piezoelectric inorganic material and a piezoelectric organic material.

22. The apparatus of claim 19 , further comprising:
a first cover member at the first electrode portion; and
a second cover member at the second electrode portion.

23. The apparatus of claim 1 , wherein at least one of the at least one rear adhesive member and the at least one front adhesive member further includes an optically transparent adhesive member.

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Assignees

• Lg Display Co Ltd

Inventors

• Kim Giyoun
• Roh Eun

Classifications

• 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

• C09J9/00

  Adhesives characterised by their physical nature or the effects produced, e.g. glue sticks (C09J7/00 takes precedence) · CPC title

• 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