Light emitting display apparatus

Patent metadata

Field	Value
Publication number	US-2024423048-A1
Application number	US-202418820065-A
Country	US
Kind code	A1
Filing date	Aug 29, 2024
Priority date	Sep 2, 2020
Publication date	Dec 19, 2024
Grant date	—

Abstract

A light emitting display apparatus includes a substrate configured to include a display area with a plurality of pixel areas, and a non-display area surrounding the display area, and a planarization layer disposed at the display area and partially at the non-display area. The planarization layer is configured to include an uneven pattern portion disposed at the non-display area, and the uneven pattern portion is configured to include a plurality of concave portions.

First claim

What is claimed is:

1 . A light emitting display apparatus, comprising:
a substrate; a display area including a plurality of pixel areas; a non-display area surrounding the display area; a planarization layer disposed on the display area and the non-display area, and a bank disposed on the planarization layer, wherein each of the plurality of pixel areas includes a light emission area and a circuit area, wherein the planarization layer disposed on the light emission area includes a first concave portions and a first protruding portion, wherein the planarization layer disposed on the circuit area includes a second concave portions and a second protruding portion, wherein the planarization layer disposed on the non-display area includes a third concave portion and a third protruding portion, and wherein the bank overlaps with the second concave portions and the second protruding portion disposed in the circuit area.

2 . The light emitting display apparatus of claim 1 , wherein the non-display area includes a pad area, and the planarization layer is disposed at a remaining non-display area except the pad area of the non-display area;
wherein the planarization layer includes an uneven pattern portion disposed at the non-display area; wherein the planarization layer is only partially disposed at the non-display area; wherein the non-display area includes the pad area, and the planarization layer is not disposed at the pad area; or wherein the uneven pattern portion includes protruding portions disposed between the plurality of concave portions of the uneven pattern portion, or the uneven pattern portion has an undulated shape.

3 . The light emitting display apparatus of claim 2 ,
wherein the uneven pattern portion surrounds the display area, wherein the non-display area includes first to fourth non-display areas to surround the display area, and wherein the uneven pattern portion is disposed at each of the first to fourth non-display areas.

4 . The light emitting display apparatus of claim 3 , wherein the number of concave portions per unit area in the uneven pattern portion disposed at each of at least some of the first to fourth non-display areas are different from each other, or
wherein a distance between central points of two adjacent concave portions in the uneven pattern portion disposed at each of at least some of the first to fourth non-display areas are different from each other.

5 . The light emitting display apparatus of claim 2 , wherein the non-display area includes:
a first non-display area disposed at a first side of the display area and including the pad area; a second non-display area disposed at a second side of the display area; a third non-display area disposed at a third side which is parallel to the second side of the display area; and a fourth non-display area disposed at a fourth side which is parallel to the first side of the display area.

6 . The light emitting display apparatus of claim 5 , further comprising:
a plurality of gate lines disposed at the display area; and a gate driving circuit disposed at one or more among the second non-display area and the third non-display area and respectively connected with the plurality of gate lines, or wherein the first non-display area further includes a link area between the pad area and the display area; and wherein the uneven pattern portion disposed at the first non-display area is disposed at the link area.

7 . The light emitting display apparatus of claim 5 , wherein the uneven pattern portion includes:
a first uneven pattern portion disposed at the first non-display area; a second uneven pattern portion disposed at each of the second non-display area and the third non-display area; and a third uneven pattern portion disposed at the fourth non-display area, wherein the number of concave portions per unit area of the first uneven pattern portion is larger than the number of concave portions per unit area of each of the second uneven pattern portion and the third uneven pattern portion.

8 . The light emitting display apparatus of claim 7 , wherein the number of concave portions per unit area of the third uneven pattern portion is larger than the number of concave portions per unit area of the second uneven pattern portion.

9 . The light emitting display apparatus of claim 5 , wherein the uneven pattern portion includes:
a first uneven pattern portion disposed at the first non-display area; a second uneven pattern portion disposed at each of the second non-display area and the third non-display area; and a third uneven pattern portion disposed at the fourth non-display area, wherein a pitch between central points of two adjacent concave portions disposed at the first uneven pattern portion is smaller than a pitch between central points of two adjacent concave portions disposed at each of the second uneven pattern portion and the third uneven pattern portion.

10 . The light emitting display apparatus of claim 9 , wherein the pitch between the central points of the two adjacent concave portions disposed at the third uneven pattern portion is smaller than the pitch between the central points of the two adjacent concave portions disposed at the second uneven pattern portion.

11 . The light emitting display apparatus of claim 1 , further comprising a peripheral circuit portion over the substrate of the non-display area,
wherein the planarization layer includes an uneven pattern portion disposed at the non-display area, wherein the uneven pattern portion is disposed at the peripheral circuit portion.

12 . The light emitting display apparatus of claim 1 ,
wherein the light emission area includes a non-planar portion including a plurality of concave portions and a protruding portion between each of the plurality of concave portions of the non-planar portion, and wherein each of the plurality of concave portions of the non-planar portion is overlapped with the first concave portions of the light emission area, and the protruding portion of the non-planar portion is overlapped with at least a portion of the first protruding portion of the light emission area.

13 . The light emitting display apparatus of claim 1 ,
wherein the first protruding portion surrounds each of the first concave portions; wherein the second protruding portion surrounds each of the second concave portions; and wherein the third protruding portion surrounds each of the third concave portion.

Assignees

• Lg Display Co Ltd

Inventors

• Choi Yonghoon
• Min Keumkyu
• Choi Mingeun

Classifications

• H10K59/8792

  comprising light absorbing layers, e.g. black layers · CPC title

• H10K59/877

  comprising scattering means · CPC title

• H10K59/8722

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

• H10K59/80521

  characterised by their shape · CPC title

• H10K59/80515

  characterised by their shape · CPC title