DISPLAY APPARATUS AND MANUFACTURING METHOD THEREOF

• US 20200135810A1
• Filed: 08/09/2019
• Published: 04/30/2020
• Est. Priority Date: 10/31/2018
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: LEE, HYEONBUM, LEE, Dongki, LEE, Eonjoo, JUNG, Jin-Whan
• Granted Patent: US 10,991,769 B2
• Time in Patent Office: Days
• CPC Class Codes: H10K 50/84 Passivation; Containers; Encapsulations
• CPC Class Codes: H10K 59/12 Active-matrix OLED [AMOLED] displays
• CPC Class Codes: H10K 59/126 Shielding, e.g. light-blocking means over the TFTs
• CPC Class Codes: H10K 59/35 comprising red-green-blue [RGB] subpixels
• CPC Class Codes: H10K 59/38 comprising colour filters or colour changing media [CCM]
• CPC Class Codes: H10K 59/87 Passivation; Containers; Encapsulations

Abstract

A display that includes a base layer having an emission area and a non-emission area adjacent to the emission area. A circuit element layer is disposed on the base layer. A display element layer is disposed on the circuit element layer. The display element layer includes an organic light emitting diode. An encapsulation layer is disposed on the display element layer and is configured to encapsulate the organic light emitting diode. A color filter layer is disposed in the encapsulation layer. The color filter layer includes a color shielding layer having a plurality of layers disposed in the non-emission area and a color filter disposed in the emission area.

Claims

1. A display apparatus comprising:

a base layer comprising an emission area and a non-emission area adjacent to the emission area;

a circuit element layer disposed on the base layer;

a display element layer disposed on the circuit element layer, the display element layer including an organic light emitting diode;

an encapsulation layer disposed on the display element layer and configured to encapsulate the organic light emitting diode; and

a color filter layer disposed in the encapsulation layer,

wherein the color filter layer includes a color shielding layer having a plurality of layers disposed in the non-emission area and a color filter disposed in the emission area.

2. The display apparatus of claim 1, wherein the color shielding layer comprises:

a first color shielding layer having a first color;

a second color shielding layer disposed on the first color shielding layer and having a second color that is different from the first color; and

a third color shielding layer disposed on the second color shielding layer and having a third color that is different from the first and second colors,

wherein a color of the color filter is one of the first to third colors.

3. The display apparatus of claim 2, wherein the first color is green, the second color is red, and the third color is blue.

4. The display apparatus of claim 2, wherein a material of the color filter is identical to a material of one of the first to third color shielding layers.

5. The display apparatus of claim 2, further comprising;

an auxiliary shielding layer disposed in the non-emission area and disposed on the third color shielding layer.

6. The display apparatus of claim 5, wherein the auxiliary shielding layer is configured to cover side surfaces of the first to third color shielding layers.

7. The display apparatus of claim 5, wherein the auxiliary shielding layer comprises a metal oxide or a metal alloy oxide.

8. The display apparatus of claim 7, wherein the auxiliary shielding layer comprises at least one of CuO, CrO, FeO, Ni₂O₃, or MoTaO_x.

9. The display apparatus of claim 1, wherein the encapsulation layer comprises:

a first encapsulation inorganic layer disposed on the display element layer;

a first encapsulation organic layer disposed on the first encapsulation inorganic layer; and

a second encapsulation inorganic layer disposed on the first encapsulation organic layer,

wherein the color filter layer is disposed between the first encapsulation inorganic layer and the first encapsulation organic layer.

10. The display apparatus of claim 9, wherein the color filter contacts the first encapsulation organic layer.

11. The display apparatus of claim 1, wherein:

the circuit element layer includes an emission area definition layer that is configured to define the emission area; and

the color shielding layer overlaps the emission area definition layer.

12. A display apparatus comprising:

a base layer comprising an emission area and a non-emission area adjacent to the emission area;

a circuit element layer disposed on the base layer;

a display element layer disposed on the circuit element layer, the display element layer including an organic light emitting diode;

an encapsulation layer disposed on the display element layer and configured to encapsulate the organic light emitting diode; and

a color filter layer disposed between the display element layer and the encapsulation layer,

wherein the color filter layer includes a color shielding layer having at least two layers disposed in the non-emission area and a color filter disposed in the emission area.

13. The display apparatus of claim 12, wherein the encapsulation layer comprises:

a first encapsulation inorganic layer disposed on the display element layer;

a first encapsulation organic layer disposed on the first encapsulation inorganic layer; and

a second encapsulation inorganic layer disposed on the first encapsulation organic layer.

14. The display apparatus of claim 13, further comprising:

an auxiliary shielding layer disposed in the non-emission area and disposed on a third color shielding layer,

wherein the auxiliary shielding layer contacts the first encapsulation inorganic layer.

15. A display apparatus comprising:

a base layer comprising an emission area and a non-emission area adjacent to the emission area;

a circuit element layer disposed on the base layer;

a display element layer disposed on the circuit element layer and comprising an organic light emitting diode disposed in the emission area;

an encapsulation layer disposed on the display element layer and configured to encapsulate the organic light emitting diode; and

a color filter layer disposed in the encapsulation layer,

wherein the color filter layer includes;

a color shielding layer having a plurality of layers disposed in the non-emission area;

a color filter disposed in the emission area; and

an auxiliary shielding layer disposed in the non-emission area and configured to cover the color shielding layer.

16. The display apparatus of claim 15, wherein the encapsulation layer comprises:

a first encapsulation inorganic layer disposed on the display element layer;

a first encapsulation organic layer disposed on the first encapsulation inorganic layer; and

a second encapsulation inorganic layer disposed on the first encapsulation organic layer,

wherein the color filter layer is disposed between the first encapsulation inorganic layer and the first encapsulation organic layer.

17. The display apparatus of claim 16, wherein the auxiliary shielding layer contacts the first encapsulation organic layer.

18. The display apparatus of claim 16, wherein the color shielding layer comprises:

a first color shielding layer having a first color;

a second color shielding layer disposed on the first color shielding layer and having a second color that is different from the first color; and

a third color shielding layer disposed on the second color shielding layer and having a third color that is different from the first and second colors,

wherein a color of the color filter is one of the first to third colors.

19. The display apparatus of claim 16, wherein the auxiliary shielding layer comprises a metal oxide or a metal ally oxide.

20. The display apparatus of claim 16, wherein the auxiliary shielding layer comprises at least one of CuO, CrO, FeO, Ni₂O₃, and MoTaO_x.