Display device

Patent metadata

Field	Value
Publication number	US-12101984-B2
Application number	US-202117545126-A
Country	US
Kind code	B2
Filing date	Dec 8, 2021
Priority date	Mar 18, 2021
Publication date	Sep 24, 2024
Grant date	Sep 24, 2024

Abstract

A display device includes: a display panel including a sensor area and a display area, where the display panel includes an upper surface and a lower surface opposite to the upper surface; and a discoloration sensor layer overlapping the sensor area, where discoloration sensor layer is disposed on one of the upper surface of the display panel and the lower surface of the display panel, and discolored when exposed to a target material. A first through portion is defined through the display panel from the upper surface to the lower surface of the display panel, and the discoloration sensor layer overlaps the first through portion.

First claim

What is claimed is:

1. A display device comprising:
a display panel including a sensor area and a display area, wherein the display panel includes an upper surface and a lower surface opposite to the upper surface;
a discoloration sensor layer overlapping the sensor area, wherein the discoloration sensor layer is disposed on one of the upper surface of the display panel and the lower surface of the display panel, and discolored when exposed to a target material; and

a light detection layer comprising a photodiode,
wherein a first through portion is defined through the display panel from the upper surface to the lower surface of the display panel, and
the discoloration sensor layer is disposed between the light detection layer and the display panel, and overlaps the first through portion.

2. The display device of claim 1 , wherein the discoloration sensor layer includes M13 bacteriophage.

3. The display device of claim 1 ,
wherein the light detection layer further comprises a color filter disposed on the photodiode,
and
the color filter is arranged between the display panel and the photodiode.

4. The display device of claim 1 , further comprising:
a lower cover facing the lower surface of the display panel, wherein a lower hole is defined in the lower cover to overlap the first through portion,
wherein the lower hole exposes the discoloration sensor layer.

5. The display device of claim 4 , wherein the lower cover includes an elastomer.

6. The display device of claim 4 , wherein the discoloration sensor layer faces the upper surface of the display panel.

7. The display device of claim 4 , wherein the discoloration sensor layer is arranged between the display panel and the lower cover.

8. The display device of claim 7 , wherein
the display panel comprises a substrate, a display layer disposed on the substrate, and a light reflection layer disposed on the display layer, and
the light reflection layer overlaps the sensor area.

9. The display device of claim 1 , wherein the display panel further comprises:
a substrate; and
a display layer disposed on the substrate, wherein the display layer comprises a first display element overlapping the sensor area and a second display element overlapping the display area.

10. The display device of claim 1 , wherein
a second through portion is defined through the display panel from the upper surface and the lower surface, and
the second through portion overlaps the display area.

11. A display device comprising:
a display panel including a sensor area and a display area, wherein the display panel includes an upper surface and a lower surface opposite to the upper surface; and
a discoloration sensor layer comprising an M13 bacteriophage and overlapping the sensor area,
wherein a first through portion is defined through the display panel from the upper surface to the lower surface, and overlaps the sensor area, and
a second through portion is defined through the display panel from the upper surface to the lower surface, and overlaps the display area.

12. The display device of claim 11 ,
wherein the discoloration sensor layer is disposed on one of the upper surface of the display panel and the lower surface of the display panel, and discolored when exposed to a target material, and
wherein the M13 bacteriophage is arranged in the discoloration sensor layer.

13. The display device of claim 12 , further comprising:
a light detection layer overlapping the sensor area, wherein the light detection layer comprises a photodiode and a color filter disposed on the photodiode,
wherein the discoloration sensor layer is arranged between the light detection layer and the display panel, and
the color filter is arranged between the display panel and the photodiode.

14. The display device of claim 12 , further comprising:
a lower cover facing the lower surface of the display panel, wherein a lower hole is defined through the lower cover to overlap the first through portion,
wherein the lower hole exposes the discoloration sensor layer.

15. The display device of claim 14 , wherein the lower cover includes an elastomer.

16. The display device of claim 14 , wherein the discoloration sensor layer faces the upper surface of the display panel.

17. The display device of claim 14 , wherein
the discoloration sensor layer is arranged between the display panel and the lower cover,
the display panel comprises a substrate, a display layer disposed on the substrate, and a light reflection layer disposed on the display layer, and
the light reflection layer overlaps the sensor area.

18. The display device of claim 12 , wherein the display panel further comprises:
a substrate; and
a display layer disposed on the substrate, wherein the display layer comprises a first display element overlapping the sensor area and a second display element overlapping the display area.

19. The display device of claim 11 , wherein the display panel further comprises:
a substrate; and
a sensor circuit layer disposed on the substrate to overlap the sensor area, wherein the sensor circuit layer comprises a sensor thin-film transistor, and a resistance of the sensor thin-film transistor varies when exposed to a target material, and
the sensor thin-film transistor includes a semiconductor layer on which the M13 bacteriophage is arranged.

Assignees

• Samsung Display Co Ltd
• Nat Univ Pusan Ind Univ Coop Found

Inventors

• Shin Hosik
• Oh Jinwoo
• Choi Eunjung
• Shin Jaemin
• Lee Jiwon
• Yoon Jangyeol

Classifications

• H10W90/00

  Package configurations · CPC title

• H10K59/878

  comprising reflective means · CPC title

• H10K59/87

  Passivation; Containers; Encapsulations · CPC title

• H10K59/60 Primary

  OLEDs integrated with inorganic light-sensitive elements, e.g. with inorganic solar cells or inorganic photodiodes · CPC title

• G01N21/78 Primary

  producing a change of colour · CPC title