Display panel and display apparatus including the same

Patent metadata

Field	Value
Publication number	US-11601738-B2
Application number	US-202117370954-A
Country	US
Kind code	B2
Filing date	Jul 8, 2021
Priority date	Mar 29, 2019
Publication date	Mar 7, 2023
Grant date	Mar 7, 2023

Abstract

Display panel and display apparatus including the same. A display panel includes a first substrate including a display portion configured to display an image, a second substrate attached to the first substrate by an adhesive member, and a vibration generating module within the adhesive member to overlap the display portion. The vibration generating module is surrounded by the second substrate and the adhesive member.

First claim

What is claimed is:

1. A vibration apparatus, comprising:
a first substrate;
a second substrate attached to the first substrate by an adhesive member; and
a vibration generating device within the adhesive member, the vibration generating device being surrounded by the second substrate and the adhesive member.

2. The vibration apparatus of claim 1 , wherein at least one of the first substrate and the second substrate is configured to vibrate by the vibration generating device to generate a sound wave.

3. The vibration apparatus of claim 1 , wherein the vibration generating device contacts the second substrate.

4. The vibration apparatus of claim 1 , wherein:
the vibration generating device is accommodated into the adhesive member; and
the vibration generating device separated from the second substrate by the adhesive member disposed therebetween.

5. The vibration apparatus of claim 4 , wherein:
the adhesive member includes a first adhesive layer and a second adhesive layer;
the first adhesive layer is disposed between the second substrate and the vibration generating device; and
the second adhesive layer is disposed on the first adhesive layer to cover an entire portion of the vibration generating device.

6. The vibration apparatus of claim 5 , wherein the first adhesive layer has a hardness characteristic that is higher than that of the second adhesive layer.

7. The vibration apparatus of claim 5 , wherein the first adhesive layer is configured to transfer a vibration of the vibration generating device to the second substrate.

8. The vibration apparatus of claim 1 , further comprising a sealing member disposed between a periphery of the first substrate and a periphery of the adhesive member.

9. The vibration apparatus of claim 1 , wherein:
the vibration generating device includes a piezoelectric layer; and
the piezoelectric layer includes:
a plurality of piezoelectric portions; and
a plurality of flexible portions between the plurality of piezoelectric portions.

10. The vibration apparatus of claim 9 , wherein:
each piezoelectric portion includes an inorganic material; and
each flexible portion includes at least one of: an organic piezoelectric material and an organic non-piezoelectric material.

11. The vibration apparatus of claim 9 , wherein the plurality of piezoelectric portions and the plurality of flexible portions are disposed in parallel on a same plane.

12. The vibration apparatus of claim 9 , wherein:
the plurality of piezoelectric portions and the plurality of flexible portions are alternately disposed; and
a width of each of the plurality of piezoelectric portions is the same as or different from a width of each of the plurality of flexible portions.

13. The vibration apparatus of claim 12 , wherein the width of each of the plurality of flexible portions disposed between the plurality of piezoelectric portions is progressively decreased in a direction from a center portion to both edges of the vibration generating device.

14. The vibration apparatus of claim 1 , wherein the vibration generating device comprises:
a first vibration generating device overlapping a first region of the first substrate; and
a second vibration generating device overlapping a second region of the first substrate.

15. The vibration apparatus of claim 14 , further comprising a partition at the adhesive member between the first vibration generating device and the second vibration generating device.

16. The vibration apparatus of claim 14 , further comprising a partition at the adhesive member surrounding each of the first vibration generating device and the second vibration generating device.

17. The vibration apparatus of claim 16 , wherein the partition has a circular shape, an elliptical shape, or a polygonal shape.

18. The vibration apparatus of claim 1 , further comprising a rear structure at the second substrate.

19. The vibration apparatus of claim 18 , further comprising:
a gap space between the second substrate and the rear structure; and
a space division member between the second substrate and the rear structure to divide the gap space into a first region and a second region.

20. The vibration apparatus of claim 19 , wherein:
the vibration generating device includes a first vibration generating device and a second vibration generating device;
the first vibration generating device is at the first region; and
the second vibration generating device is at the second region.

21. The vibration apparatus of claim 18 , further comprising:
a supporting part between a rear periphery of the second substrate and a front periphery of the rear structure; and
a sidewall portion surrounding an outer surface of the second substrate and an outer surface of the rear structure.

Assignees

• Lg Display Co Ltd

Inventors

• Jang Yonggyoon
• Ham Yong-Su
• Lee Yongwoo
• Ryu Kyungyeol

Classifications

• H10W90/00

  Package configurations · CPC title

• H10K59/82

  Interconnections, e.g. terminals (H10K59/131, H10K59/179 take precedence) · CPC title

• H10K59/8722

  Peripheral sealing arrangements, e.g. adhesives, sealants · CPC title

• H10K59/871

  Self-supporting sealing arrangements · CPC title

• G06F3/016

  Input arrangements with force or tactile feedback as computer generated output to the user · CPC title