Display panel

Patent metadata

Field	Value
Publication number	US-12389752-B2
Application number	US-202217846460-A
Country	US
Kind code	B2
Filing date	Jun 22, 2022
Priority date	Aug 11, 2021
Publication date	Aug 12, 2025
Grant date	Aug 12, 2025

Abstract

A display panel may include a bank pattern having an opening through which an electrode pattern of a light-emitting element layer is exposed. The bank pattern may include a tapered part having a width from an end of an electrode pattern to the opening. At least one of a width and a slope angle of the tapered part may be partially differently set.

First claim

What is claimed is:

1. A display panel, comprising:
a circuit layer disposed on a substrate;
a light-emitting element layer disposed on the circuit layer; and
an encapsulation layer configured to cover the light-emitting element layer,
wherein:
the light-emitting element layer includes a bank pattern having an opening covering an edge of an electrode pattern;
the bank pattern includes a tapered part having a width from an end of the electrode pattern to the opening of the bank pattern; and
at least one of the width and a slope angle of the tapered part within a subpixel is partially differently set,
wherein the tapered part of the bank pattern includes an uneven pattern, and
wherein the uneven pattern has a width in a range of 10% to 30% of a diameter of the opening of the bank pattern.

2. The display panel of claim 1 , wherein the uneven pattern has an irregular pattern.

3. The display panel of claim 1 , further comprising: a touch sensor layer disposed on the encapsulation layer; and a polarizing plate disposed on the touch sensor layer.

4. The display panel of claim 1 , further comprising: a touch sensor layer disposed on the encapsulation layer; and a color filter layer disposed on the touch sensor layer.

5. A display panel, comprising:
a circuit layer disposed on a substrate;
a light-emitting element layer disposed on the circuit layer; and
an encapsulation layer configured to cover the light-emitting element layer,
wherein:
the light-emitting element layer includes a bank pattern having an opening covering an edge of an electrode pattern;
the bank pattern includes a tapered part having a width from an end of the electrode pattern to the opening of the bank pattern; and
at least one of the width and a slope angle of the tapered part within a subpixel is partially differently set,
wherein the tapered part of the bank pattern includes an engraved pattern, and
wherein the engraved pattern has an irregular pattern.

6. The display panel of claim 5 , wherein the tapered part has a difference in the slope angle greater than 0° and less than or equal to 45° according to a presence or absence of the engraved pattern.

7. The display panel of claim 5 , wherein at least one of the width and the slope angle of the tapered part in adjacent subpixels is differently set.

8. The display panel of claim 5 , further comprising: a touch sensor layer disposed on the encapsulation layer; and a polarizing plate disposed on the touch sensor layer.

9. The display panel of claim 5 , further comprising: a touch sensor layer disposed on the encapsulation layer; and a color filter layer disposed on the touch sensor layer.

10. A display panel, comprising:
a circuit layer disposed on a substrate;
a light-emitting element layer disposed on the circuit layer; and
an encapsulation layer configured to cover the light-emitting element layer,
wherein:
the light-emitting element layer includes a bank pattern having an opening covering an edge of an electrode pattern;
the bank pattern includes a tapered part having a width from an end of the electrode pattern to the opening of the bank pattern; and
at least one of the width and a slope angle of the tapered part within a subpixel is partially differently set,
wherein the tapered part of the bank pattern includes an engraved pattern, and
wherein the engraved pattern makes the slope angle of the tapered part partially different.

11. The display panel of claim 10 , wherein the tapered part has a difference in the slope angle greater than 0° and less than or equal to 45° according to a presence or absence of the engraved pattern.

12. The display panel of claim 10 , further comprising: a touch sensor layer disposed on the encapsulation layer; and a polarizing plate disposed on the touch sensor layer.

13. The display panel of claim 10 , further comprising: a touch sensor layer disposed on the encapsulation layer; and a color filter layer disposed on the touch sensor layer.

14. A display panel, comprising:
a circuit layer disposed on a substrate;
a light-emitting element layer disposed on the circuit layer; and
an encapsulation layer configured to cover the light-emitting element layer,
wherein:
the light-emitting element layer includes a bank pattern having an opening covering an edge of an electrode pattern;
the bank pattern includes a tapered part having a width from an end of the electrode pattern to the opening of the bank pattern; and
at least one of the width and a slope angle of the tapered part within a subpixel is partially differently set,
wherein the tapered part of the bank pattern includes an uneven pattern that makes the width of the tapered part partially different.

Assignees

• Lg Display Co Ltd

Inventors

• Jeong Seong Hun
• Ryoo Seung Seok

Classifications

• H10K50/868

  Arrangements for polarized light emission (H10K50/86 takes precedence) · CPC title

• H10K50/84

  Passivation; Containers; Encapsulations · CPC title

• H10K59/8793

  Arrangements for polarized light emission (H10K59/8791 takes precedence) · CPC title

• H10K59/87

  Passivation; Containers; Encapsulations · CPC title

• H10K59/121

  characterised by the geometry or disposition of pixel elements · CPC title