Display device

Patent metadata

Field	Value
Publication number	US-12067801-B2
Application number	US-202318174699-A
Country	US
Kind code	B2
Filing date	Feb 27, 2023
Priority date	Aug 17, 2020
Publication date	Aug 20, 2024
Grant date	Aug 20, 2024

Abstract

A display device includes a display panel, a metal plate disposed on a bottom surface of the display panel and configured to support the display panel, a filling member disposed on the bottom surface of the display panel, the filling member being disposed on the same level as the metal plate relative to the bottom surface of the display panel, and a material of the metal plate being different from a material of the filling member, a fingerprint sensor disposed on a bottom surface of the filling member, and a member-sensor bonding member disposed between the fingerprint sensor and the filling member to bond the fingerprint sensor to the filling member. A hardness of the filling member is greater than a hardness of the member-sensor bonding member.

First claim

What is claimed is:

1. A display device comprising:
a display panel;
a metal plate disposed on a bottom surface of the display panel and configured to support the display panel;
a filling member disposed on the bottom surface of the display panel,
wherein a material of the metal plate is different from a material of the filling member;
a fingerprint sensor disposed on a bottom surface of the filling member; and
a first adhesive layer disposed between the fingerprint sensor and the filling member to bond the fingerprint sensor to the filling member,
wherein the metal plate comprises a first surface facing the display panel and a second surface opposite to the first surface,
wherein a through hole is defined in the metal plate,
wherein the through hole extends from the first surface of the metal plate to the second surface of the metal plate,
wherein the filling member includes a portion disposed in the through hole,
and
wherein the first adhesive layer includes a first portion directly contacting the second surface of the metal plate and a second portion directly contacting the bottom surface of the filling member.

2. The display device of claim 1 , further comprising a second adhesive layer disposed between the display panel and the metal plate,
wherein the second adhesive layer directly contacts the first surface of the metal plate.

3. The display device of claim 2 ,
wherein the portion of the filling member disposed in the through hole directly contacts the second adhesive layer.

4. The display device of claim 3 ,
wherein the portion of the filling member disposed in the through hole directly contacts the metal plate.

5. The display device of claim 1 ,
wherein the portion of the filling member disposed in the through hole directly contacts the metal plate.

6. The display device of claim 1 ,
wherein the filling member overlaps the second portion of the first adhesive layer,
wherein the filling member does not overlap the first portion of the first adhesive layer, and
wherein a thickness of the first portion of the first adhesive layer is different from a thickness of the second portion of the first adhesive layer.

7. The display device of claim 1 ,
wherein fingerprint sensor directly contacts the first portion of the first adhesive layer and the second portion of the first adhesive layer.

8. The display device of claim 1 ,
wherein the second portion of the first adhesive layer directly contacts side surfaces of the metal plate which defines the through hole.

9. The display device of claim 1 ,
wherein a hardness of the filling member is 10 times or more a hardness of the first adhesive layer, and
wherein a hardness of the metal plate is greater than the hardness of the filling member.

10. The display device of claim 1 ,
wherein a width of the through hole decreases from the first surface of the metal plate to the second surface of the metal plate.

11. The display device of claim 1 ,
wherein a width of the through hole decreases from the first surface of the metal plate to a first point of the through hole which is disposed between the first surface of the metal plate and the second surface of the metal plate and then increases from the first point to the second surface of the metal plate.

12. The display device of claim 1 ,
wherein a width of the through hole increases from the first surface of the metal plate to a first point of the through hole which is disposed between the first surface of the metal plate and the second surface of the metal plate and then decreases from the first point to the second surface of the metal plate.

13. The display device of claim 1 ,
wherein the fingerprint sensor includes an ultrasonic fingerprint sensor, and
wherein the ultrasonic fingerprint sensor is configured to compare an incident ultrasonic wave which is transmitted upward from the ultrasonic fingerprint sensor with a fingerprint reflection ultrasonic wave which is reflected from a finger on a top surface of the display panel, which is opposite to the bottom surface of the display panel, and recognize fingerprint of the finger.

14. The display device of claim 1 ,
wherein the fingerprint sensor includes an optical fingerprint sensor, and
wherein the filling member has a transmittance of 90% or more for light from the optical fingerprint sensor.

15. The display device of claim 1 ,
wherein a thickness of the filling member is greater than a thickness of the metal plate, and
wherein the filling member directly contacts the second surface of the metal plate.

16. The display device of claim 1 ,
wherein when the display device is viewed in a plan view, the filling member is completely surrounded by the metal plate.

17. The display device of claim 1 ,
wherein a folding area extending in a first direction, a first non-folding area disposed on a first side of the folding area, and a second non-folding area disposed on a second side of the folding area are defined in the display device,
wherein the first non-folding area, the folding area, and the second non-folding area are arranged in a second direction different from the first direction, and
wherein the display device is folded with respect to the folding area.

18. The display device of claim 1 , wherein the display device further comprises
a lower panel sheet disposed on the second surface of the metal plate without vertically overlapping the fingerprint sensor.

19. The display device of claim 18 ,
wherein the lower panel sheet includes a cushion layer,
wherein the cushion layer includes a sheet hole completely penetrating from a top surface of the cushion layer to a bottom surface of the cushion layer, and
wherein the fingerprint sensor is disposed in the sheet hole.

20. The display device of claim 18 ,
wherein when the display device is viewed in a plan view, the lower panel sheet is disposed on a first side of the fingerprint sensor without being disposed on a second side, which is opposite to the first side of the fingerprint sensor.

Assignees

• Samsung Display Co Ltd

Inventors

• Jo Jae Hyung
• Ryu Ji Hun
• Baek Kwang Hyun
• Baek Jong In
• Seo Su Yul
• Jin Sung Ho

Classifications

• H10K50/87

  Arrangements for heating or cooling · CPC title

• G06V40/1306 Primary

  non-optical, e.g. ultrasonic or capacitive sensing · CPC title

• H04M1/0266 Primary

  for a display module assembly · CPC title

• H10K59/65

  OLEDs integrated with inorganic image sensors · CPC title

• H10K59/12 Primary

  Active-matrix OLED [AMOLED] displays · CPC title