Display device

Patent metadata

Field	Value
Publication number	US-11805666-B2
Application number	US-202117194893-A
Country	US
Kind code	B2
Filing date	Mar 8, 2021
Priority date	Jun 4, 2020
Publication date	Oct 31, 2023
Grant date	Oct 31, 2023

Abstract

Provided is a display device including a first substrate including a display part and a non-display part around the display part, a second substrate disposed on the first substrate, a pixel disposed between the display part and the second substrate, a quantum dot layer disposed between the second substrate and the pixel, a bank layer disposed around the quantum dot layer, and when viewed on a plane, overlapping the non-display part, a color filter disposed between the second substrate and the quantum dot layer, a dummy color filter, when viewed on the plane, overlapping the non-display part, and disposed between the bank layer and the second substrate, and a sealant disposed between the non-display part and the bank layer.

First claim

What is claimed is:

1. A display device comprising:
a first substrate including a display part and a non-display part around the display part;
a second substrate disposed on the first substrate;
a pixel disposed between the display part and the second substrate;
a quantum dot layer, when viewed on a plane, overlapping the display part, and disposed between the second substrate and the pixel;
a bank layer disposed around the quantum dot layer, and when viewed on the plane, overlapping the non-display part;
a color filter disposed between the second substrate and the quantum dot layer;
a dummy color filter, when viewed on the plane, overlapping the non-display part, and disposed between the bank layer and the second substrate; and
a sealant disposed between the non-display part and the bank layer.

2. The display device of claim 1 , further comprising a thin film encapsulation layer disposed on the display part to cover the pixel and extending toward the non-display part, and when viewed on the plane, overlapping the non-display part,
wherein the sealant is disposed on the thin film encapsulation layer.

3. The display device of claim 2 , further comprising a support layer disposed on the non-display part,
wherein the support layer is disposed between an edge of the first substrate and the sealant, and
the thin film encapsulation layer is adjacent to the support layer.

4. The display device of claim 3 , wherein the thin film encapsulation layer comprises:
a first encapsulation layer disposed on the pixel and extending toward the non-display part, and when viewed on the plane, overlapping the non-display part;
a second encapsulation layer disposed on the first encapsulation layer, and when viewed on the plane, overlapping the display part; and
a third encapsulation layer disposed on the first encapsulation layer to cover the second encapsulation layer,
wherein the first encapsulation layer and the third encapsulation layer come into contact with each other on the non-display part to be adjacent to the support layer, and
the sealant is disposed on the first and third encapsulation layers in contact with each other.

5. The display device of claim 3 , further comprising a dam disposed on the non-display part,
wherein the thin film encapsulation layer covers the dam, and
the sealant is disposed between the dam and the support layer.

6. The display device of claim 1 , further comprising a filling agent disposed between the pixel and the quantum dot layer, and extending toward the non-display part, and when viewed on the plane, overlapping the non-display part.

7. The display device of claim 6 , wherein the sealant comes into contact with the filling agent.

8. The display device of claim 6 , wherein the sealant is spaced apart from the filling agent.

9. The display device of claim 1 , further comprising:
a low refraction layer disposed below the second substrate to cover the color filter and the dummy color filter;
a first insulation layer disposed below the low refraction layer; and
a second insulation layer disposed below the bank layer and the quantum dot layer,
wherein the sealant is disposed between the second insulation layer and the non-display part.

10. The display device of claim 9 , wherein, when viewed on the plane, an edge of the bank layer and an edge of the dummy color filter adjacent to the edge of the bank layer are disposed between an edge of the second substrate and the sealant and are more adjacent to the sealant than to the edge of the second substrate.

11. The display device of claim 10 , wherein the low refraction layer, the first insulation layer, and the second insulation layer extend to the edge of the second substrate, and
the second insulation layer is disposed below the first insulation layer to cover the bank layer.

12. The display device of claim 10 , wherein, when viewed on the plane, an edge of the low refraction layer is disposed between the edge of the second substrate and the sealant, and is more adjacent to the sealant than to the edge of the second substrate.

13. The display device of claim 12 , wherein
the first insulation layer is disposed below the second substrate, spaced apart from the edge of the second substrate, and covering the low refraction layer, and
the second insulation layer is disposed below the second substrate, spaced apart from the edge of the second substrate, and covering the bank layer and the first insulation layer.

14. The display device of claim 1 , further comprising a plurality of signal lines disposed on the first substrate and connected to the pixel,
wherein a plurality of openings are defined in portions of the plurality of signal lines overlapping the sealant.

15. The display device of claim 1 , wherein the bank layer has a black color.

16. The display device of claim 1 , wherein the dummy color filter is provided in plurality, and the plurality of dummy color filters are deposited while having different colors.

17. The display device of claim 1 , further comprising:
a support layer disposed on the non-display part; and
a thin film encapsulation layer disposed on the display part to cover the pixel and extending toward the non-display part to be adjacent to the support layer,
wherein the sealant is disposed between an edge of the first substrate and the support layer.

18. The display device of claim 1 , further comprising:
a support layer disposed on the non-display part; and
a thin film encapsulation layer disposed on the display part to cover the pixel and extending toward the non-display part, and when viewed on the plane, overlapping the non-display part,
wherein the thin film encapsulation layer is disposed on the support layer, and the sealant is disposed on the thin film encapsulation layer between the support layer and the display part.

19. A display device comprising:
a first substrate including a display part and a non-display part around the display part;
a second substrate disposed on the first substrate;
a pixel disposed between the display part and the second substrate;
a quantum dot layer disposed between the second substrate and the pixel;
a bank layer disposed around the quantum dot layer, and when viewed on a plane, overlapping the non-display part;
a support layer disposed on the non-display part;
a dam disposed on the non-display part and spaced apart from the support layer; and
a sealant, when viewed on the plane, not overlapping the support layer, and disposed between the non-display part and the bank layer,
wherein the sealant is disposed between the support layer and the dam.

20. The display device of claim 19 , further comprising:
a color filter disposed between the second substrate and the quantum dot layer; and
a dummy color filter, when viewed on the plane, overlapping the non-display part, and disposed between the bank layer and the second substrate.

Assignees

• Samsung Display Co Ltd

Inventors

• Kim Yohan
• Park Eung Seok
• Yun Wonmin
• Kim Yongtack
• Lee Byoungduk
• Cho Yoonhyeung

Classifications

• H10K59/40

  OLEDs integrated with touch screens · CPC title

• H10K50/865

  comprising light absorbing layers, e.g. light-blocking layers · CPC title

• H10K50/8426 Primary

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

• G02B5/201

  in the form of arrays · CPC title

• H10K50/8428 Primary

  Vertical spacers, e.g. arranged between the sealing arrangement and the OLED · CPC title