Light emitting display apparatus

Patent metadata

Field	Value
Publication number	US-2022069053-A1
Application number	US-202117410372-A
Country	US
Kind code	A1
Filing date	Aug 24, 2021
Priority date	Sep 2, 2020
Publication date	Mar 3, 2022
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 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, wherein the planarization layer is configured to include an uneven pattern portion disposed at the non-display area, and wherein the uneven pattern portion is configured to include a plurality of concave portions.

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 the remaining non-display area except the pad area among the non-display area; and/or
wherein the planarization layer is only partially disposed at the non-display area; and/or wherein the non-display area includes a pad area and the planarization layer is not disposed at the pad area; and/or wherein the uneven pattern portion includes protruding portions disposed between the plurality of concave portions and/or 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 the first to fourth non-display areas is the same as or different from each other, and/or
wherein a distance between central points of the two adjacent concave portions in the uneven pattern portion disposed at each of the first to fourth non-display areas is the same as or 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 the first side of the display area and configured to include the pad area; a second non-display area disposed at the second side of the display area; a third non-display area disposed at the third side which is parallel to the second side of the display area; and a fourth non-display area disposed at the 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, and/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 a pitch between central points of the two adjacent concave portions disposed at the third uneven pattern portion is smaller than a pitch between 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 uneven pattern portion is disposed at the peripheral circuit portion.

12 . The light emitting display apparatus of claim 1 ,
wherein the display area is configured to include a pixel array including a pixel disposed at each of the plurality of pixel areas, wherein the pixel is configured to include a light emitting portion, and a non-light emitting portion to surround the light emitting portion, and the planarization layer disposed at the light emitting portion is configured to include a light extraction pattern including a plurality of concave portions and protruding portion surrounding each of the plurality of concave portions.

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

14 . The light emitting display apparatus of claim 12 ,
wherein the planarization layer disposed at the non-light emitting portion is configured to include a light extraction pattern including a plurality of concave portions and protruding portion surrounding each of the plurality of concave portions.

15 . A light emitting display apparatus comprising:
a substrate configured to include a display area having a plurality of pixel areas and a non-display area surrounding the display area; a pixel circuit portion at the display area of the substrate; a peripheral circuit portion at the non-display area of the substrate; a planarization layer at the pixel circuit portion and the peripheral circuit portion; and a light emitting portion over the planarization layer of each of the plurality of pixel areas, wherein the planarization layer at the peripheral circuit portion includes an uneven pattern portion, and wherein the uneven pattern portion is configured to include a plurality of concave portions.

16 . The light emitting display apparatus of claim 15 , wherein the peripheral circuit portion includes:
a plurality of pad portions disposed at a pad area of a first non-display area adjacent to a first side of the display area; a link portion between each of the plurality of pad portions and the first side of the display area; a first gate driving circuit disposed at a second non-display area adjacent to a second side of the display area; and a second gate driving ci

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