IP Library › Granted Patent US 12690356
Granted Patent B2
US 12690356 · App. 18/438,277 · Granted Jul 21, 2026

Display device

Inventors: Youyoung Jin (Yongin-si, KR); Keunchan Oh (Yongin-si, KR); Sun-Kyu Joo (Yongin-si, KR)
Assignee: Samsung Display Co., Ltd.
H10K59/38H10K59/127H10K59/8722H10K59/877H10K59/879
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Quick Facts
Patent No.
US 12690356
App. No.
18/438,277
Granted
Jul 21, 2026
Kind
B2
Abstract

A display device includes a substrate including a display area and a sealing area surrounding the display area; a color filter layer below the substrate and defining at least one trench recessed from a lower surface of the color filter layer in a direction toward the substrate in the sealing area; a refractive layer below the color filter layer; and a capping layer below the refractive layer and in contact with at least a portion of the color filter layer in the sealing area.

Claims (52)

1 . A display device comprising:

a substrate comprising a display area and a sealing area surrounding the display area;

a color filter layer below the substrate and defining at least one trench recessed from a lower surface of the color filter layer in a direction toward the substrate in the sealing area;

a refractive layer below the color filter layer; and

a capping layer below the refractive layer and in contact with at least a portion of the color filter layer in the sealing area.

2 . The display device of claim 1 , wherein the color filter layer comprises:

a first color filter below the substrate;

a second color filter below the first color filter; and

a third color filter below the second color filter.

3 . The display device of claim 2 , wherein the trench is recessed from a lower surface of the third color filter to a lower surface of the first color filter to expose the first color filter.

4 . The display device of claim 2 , wherein the trench is recessed from a lower surface of the third color filter to a lower surface of the second color filter to expose the second color filter.

5 . The display device of claim 1 , wherein the refractive layer is disconnected by the trench.

6 . The display device of claim 5 , wherein the refractive layer comprises:

a first refractive layer in the trench of the color filter layer; and

a second refractive layer spaced apart from the first refractive layer and below the lower surface of the color filter layer.

7 . The display device of claim 1 , wherein the capping layer comprises:

a first capping layer below the refractive layer; and

a second capping layer below the first capping layer.

8 . The display device of claim 7 , further comprising:

a scattering layer between the first capping layer and the second capping layer.

9 . The display device of claim 1 , wherein the refractive layer exposes a portion of the color filter layer, and

wherein the capping layer is in contact with the portion of the color filter layer exposed by the refractive layer.

10 . The display device of claim 1 , further comprising:

an organic layer below the capping layer.

11 . A display device comprising:

a first substrate comprising a display area and a sealing area surrounding the display area;

a second substrate below the first substrate and facing the first substrate;

a color conversion layer between the first substrate and the second substrate and configured to convert a color of light emitted from a light emitting element that is positioned on the second substrate;

a color filter layer below the first substrate and defining at least one trench recessed from a lower surface of the color filter layer in a direction toward the first substrate in the sealing area;

a refractive layer below the color filter layer; and

a capping layer below the refractive layer and in contact with at least a portion of the color filter layer in the sealing area.

12 . The display device of claim 11 , wherein the color filter layer comprises:

a first color filter below the first substrate;

a second color filter below the first color filter; and

a third color filter below the second color filter.

13 . The display device of claim 12 , wherein the trench is recessed from a lower surface of the third color filter to a lower surface of the first color filter to expose the first color filter.

14 . The display device of claim 12 , wherein the trench is recessed from a lower surface of the third color filter to a lower surface of the second color filter to expose the second color filter.

15 . The display device of claim 11 , wherein the capping layer comprises:

a first capping layer below the refractive layer; and

a second capping layer below the first capping layer.

16 . The display device of claim 15 , further comprising:

a scattering layer between the first capping layer and the second capping layer.

17 . The display device of claim 11 , wherein the refractive layer comprises:

a first refractive layer in the trench of the color filter layer; and

a second refractive layer spaced apart from the first refractive layer and positioned below the lower surface of the color filter layer.

18 . The display device of claim 11 , wherein the refractive layer exposes a portion of the color filter layer, and

wherein the capping layer is in contact with the portion of the color filter layer exposed by the refractive layer.

19 . The display device of claim 11 , further comprising:

a sealing member along the sealing area between the first substrate and the second substrate,

wherein the sealing member comprises spacer particles and couples the first substrate and the second substrate.

20 . The display device of claim 11 , further comprising:

an organic layer below the capping layer.