IP Library Granted Patent US 12,414,455
Granted Patent B2
US 12,414,455 · App. 17/865,920 · Granted Sep 9, 2025

Electronic device

Inventors: Taeho Kim (Yongin-si, KR); Hyeoji Kang (Seoul, KR); Ohjeong Kwon (Hwaseong-si, KR); Wooyoung Kim (Yongin-si, KR); Hongyeon Lee (Suwon-si, KR); Seungyeon Jeong (Hwaseong-si, KR)
Assignee: Samsung Display Co., Ltd.
H10K50/865G06F3/0412G06F3/0445H10K59/40H10D86/441H10D86/60H10K50/822H10K59/1213H10K59/122H10K85/30
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Quick Facts
Patent No.
US 12,414,455
App. No.
17/865,920
Granted
Sep 9, 2025
Kind
B2
Abstract

An electronic device includes an electronic module, a display panel including a first display area overlapping the electronic module in a plan view, a second display area not overlapping the same in a plan view and including a light emitting element layer, an inorganic absorption layer, and an encapsulation layer, and a reflection adjusting layer on the display panel and including a dye. The first display area includes an element area including a pixel electrode, a hole transport layer, a light emitting layer, an electron transport layer, and a common electrode, and a transmissive area adjacent to the element area, including the hole transport layer, the electron transport layer, and a pattern layer, and not including the light emitting layer and the common electrode, and the inorganic absorption layer overlaps the element area in a plan view and does not overlap the transmissive area in a plan view.

Claims (87)

1. An electronic device comprising:

an electronic module;

a display panel including:

a first display area overlapping the electronic module in a plan view;

a second display area not overlapping the electronic module in a plan view;

a light emitting element layer;

an inorganic absorption layer disposed on the light emitting element layer; and

an encapsulation layer disposed on the inorganic absorption layer; and

a reflection adjusting layer disposed on the display panel, the reflection adjusting layer including a dye, wherein

the first display area comprises:

an element area including:

a pixel electrode;

a hole transport layer disposed on the pixel electrode;

a light emitting layer disposed on the hole transport layer;

an electron transport layer disposed on the light emitting layer; and

a common electrode disposed on the electron transport layer; and

a transmissive area adjacent to the element area, the transmissive area including the hole transport layer, the electron transport layer, and a pattern layer disposed on the electron transport layer, and the transmissive area not including the light emitting layer and the common electrode, and

the inorganic absorption layer overlaps the element area in a plan view and does not overlap the transmissive area in a plan view.

2. The electronic device of claim 1 , wherein the pattern layer comprises a fluorine-based compound.

3. The electronic device of claim 1 , wherein the pattern layer does not overlap the common electrode and the inorganic absorption layer in a plan view.

4. The electronic device of claim 1 , wherein the display panel comprises a capping layer disposed on an upper or lower portion of the inorganic absorption layer.

5. The electronic device of claim 4 , wherein

the inorganic absorption layer is disposed between the common electrode and the capping layer, and

the capping layer overlaps the element area and the transmissive area in a plan view.

6. The electronic device of claim 4 , wherein

the capping layer is disposed between the common electrode and the inorganic absorption layer, and

the capping layer overlaps the element area and the transmissive area in a plan view.

7. The electronic device of claim 6 , wherein

the transmissive area comprises an upper pattern layer disposed on the capping layer,

the upper pattern layer includes a fluorine-based compound, and

the inorganic absorption layer does not overlap the upper pattern layer in a plan view.

8. The electronic device of claim 1 , wherein the inorganic absorption layer comprises a single metal or an alloy having a refractive index of about 1 or higher and an extinction coefficient of about 5 or lower.

9. The electronic device of claim 8 , wherein the inorganic absorption layer comprises at least one of a transition metal, a post-transition metal, a lanthanide metal, or an alloy of two or more metals selected from the transition metal, the post-transition metal, and the lanthanide metal.

10. The electronic device of claim 1 , wherein the reflection adjusting layer overlaps the element area in a plan view and does not overlap the transmissive area in a plan view.

11. The electronic device of claim 1 , wherein the reflection adjusting layer comprises:

a first dye having a maximum absorption wavelength in a range of about 420 nm to about 510 nm; and

a second dye having a maximum absorption wavelength in a range of about 550 nm to about 600 nm.

12. The electronic device of claim 1 , wherein the reflection adjusting layer comprises a porphyrin-based dye or a tetraazaporphyrin-based dye.

13. The electronic device of claim 1 , further comprising:

a sensor layer disposed between the display panel and the reflection adjusting layer,

wherein the sensor layer comprises:

a sensing base layer;

a first conductive layer disposed on the sensing base layer;

a second conductive layer disposed on the first conductive layer; and

a sensing insulating layer disposed between the first conductive layer and the second conductive layer.

14. The electronic device of claim 13 , wherein

the reflection adjusting layer comprises a division layer that overlaps the second conductive layer in a plan view, and

the division layer does not overlap the first display area in a plan view.

15. The electronic device of claim 13 , wherein the sensor layer is disposed directly on the encapsulation layer.

16. An electronic device comprising:

a display panel including:

an auxiliary display area including an element area and a transmissive area; and

a main display area adjacent to the auxiliary display area; and

a reflection adjusting layer disposed on the display panel,

wherein the display panel comprises:

a base layer;

a circuit layer disposed on the base layer;

a light emitting element layer disposed on the circuit layer;

an encapsulation layer disposed on the light emitting element layer;

a pattern layer disposed between the circuit layer and the encapsulation layer in the transmissive area; and

an inorganic absorption layer that does not overlap the pattern layer in a plan view and is disposed between the light emitting element layer and the encapsulation layer.

17. The electronic device of claim 16 , wherein

in the auxiliary display area, the light emitting element layer comprises:

a pixel electrode disposed on the circuit layer and not overlapping the transmissive area in a plan view;

a pixel defining pattern including an opening exposing a top surface of the pixel electrode;

a hole transport layer disposed on the pixel electrode and provided as a common layer in the element area and the transmissive area;

a light emitting layer disposed on the hole transport layer in the opening of the pixel defining pattern;

an electron transport layer disposed on the light emitting layer and provided as a common layer in the element area and the transmissive area; and

a common electrode disposed on the electron transport layer, and

the common electrode does not overlap the pattern layer in a plan view.

18. The electronic device of claim 17 , wherein the display panel comprises a capping layer disposed between the light emitting element layer and the encapsulation layer.

19. The electronic device of claim 18 , wherein the capping layer is disposed on a top surface of the inorganic absorption layer and is provided as a common layer in the element area and the transmissive area.

20. The electronic device of claim 18 , wherein

the capping layer is disposed on a bottom surface of the inorganic absorption layer and is provided as a common layer in the element area and the transmissive area,

the display panel comprises an upper pattern layer disposed on the capping layer in the transmissive area, and

the inorganic absorption layer does not overlap the upper pattern layer in a plan view.

21. The electronic device of claim 18 , wherein the capping layer is disposed on a top surface or a bottom surface of the inorganic absorption layer and does not overlap the pattern layer in a plan view.

22. The electronic device of claim 17 , wherein

the display panel comprises an auxiliary pattern layer extending from the pattern layer and disposed on the pixel defining pattern, and

the inorganic absorption layer and the common electrode do not overlap the auxiliary pattern layer in a plan view.

23. The electronic device of claim 17 , wherein

the light emitting element layer comprises an electron injection layer disposed between the electron transport layer and the common electrode, and

the electron injection layer does not overlap the pattern layer in a plan view.

24. The electronic device of claim 16 , wherein

the reflection adjusting layer comprises a first dye having a maximum absorption wavelength in a range of about 420 nm to about 510 nm and a second dye having a maximum absorption wavelength in a range of about 550 nm to about 600 nm, and

the reflection adjusting layer does not overlap the transmissive area in a plan view.

25. The electronic device of claim 16 , wherein the inorganic absorption layer comprises at least one of a transition metal, a post-transition metal, a lanthanide metal, or an alloy of two or more metals selected from the transition metal, the post-transition metal, and the lanthanide metal.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 15, 2022
From: KIM, TAEHO; KANG, HYEOJI; KWON, OHJEONG; KIM, WOOYOUNG; LEE, HONGYEON; JEONG, SEUNGYEON
To: SAMSUNG DISPLAY CO., LTD.
Reel/Frame 060525/0930 →
Priority Claims (1)
KR 10-2021-0115722 · Aug 31, 2021 · national
Continuity (1)
Related Publication 20230096610A1 · Mar 30, 2023
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