Transparent display apparatus

Patent metadata

Field	Value
Publication number	US-11864419-B2
Application number	US-202217898415-A
Country	US
Kind code	B2
Filing date	Aug 29, 2022
Priority date	Aug 31, 2021
Publication date	Jan 2, 2024
Grant date	Jan 2, 2024

Abstract

A transparent display apparatus is provided, which reduces a visibility difference between a non-display area and a display area, and has excellent encapsulation characteristics. The transparent display apparatus comprises a substrate having a display area and a non-display area adjacent to the display area, a plurality of pixels disposed in the display area, having a first transmissive portion, and a second transmissive portion disposed in the non-display area.

First claim

The invention claimed is:

1. A transparent display apparatus, comprising:
a substrate having a display area and a non-display area adjacent to the display area;
a plurality of pixels disposed in the display area, having a first transmissive portion;
a second transmissive portion disposed in the non-display area;
a gate driver positioned in the non-display area, the gate driver including a plurality of gate driving circuits;
a planarization layer disposed on the plurality of gate driving circuits;
an undercut portion disposed between the substrate and the planarization layer; and
an organic light emitting layer extended from the display area to the non-display area in which the second transmissive portion is disposed,
wherein each of the plurality of gate driving circuits includes a plurality of gate driver in panel (GIP) portions, and
wherein the undercut portion is disposed along an edge of the second transmissive portion.

2. The transparent display apparatus of claim 1 , wherein
at least two of the plurality of GIP portions are adjacent to the second transmissive portion.

3. The transparent display apparatus of claim 2 , wherein the gate driver further includes a plurality of GIP lines near the plurality of GIP portions, and
at least two of the plurality of GIP lines are adjacent to the second transmissive portion.

4. The transparent display apparatus of claim 2 , wherein the non-display area includes a non-pad portion disposed in a region of the non-display area outside the gate driver and a pad area,
the non-pad portion includes a plurality of power sharing lines for supplying a power source to the plurality of pixels, and
at least two of the plurality of power sharing lines are adjacent to the second transmissive portion.

5. The transparent display apparatus of claim 4 , wherein the non-pad portion includes a dummy pattern disposed to be spaced apart from the plurality of power sharing lines, and
the second transmissive portion is disposed between the power sharing line and the dummy pattern.

6. The transparent display apparatus of claim 1 , wherein the second transmissive portion is formed in the same shape as that of the first transmissive portion.

7. The transparent display apparatus of claim 1 , wherein the second transmissive portion includes at least one concave portion and at least one convex portion.

8. The transparent display apparatus of claim 1 , wherein each of the plurality of pixels includes:
a first electrode disposed on the substrate;
the organic light emitting layer provided on the first electrode; and
a second electrode disposed on the organic light emitting layer.

9. The transparent display apparatus of claim 1 ,
wherein the organic light emitting layer disposed in the non-display area has segments disconnected from each other by the undercut portion.

10. The transparent display apparatus of claim 1 , further comprising a plurality of inorganic layers disposed between the substrate and the planarization layer,
wherein the plurality of inorganic layers has segments that are disconnected from each other by the undercut portion and the second transmissive portion.

11. The transparent display apparatus of claim 1 , wherein a width of the undercut portion is 0.1 micrometers (μm) to 5 μm, and
a height of the undercut portion is 0.3 μm to 1.3 μm.

12. A transparent display apparatus, comprising:
a substrate having:
a display area having a first transmissive portion; and
a non-display area adjacent to the display area;
a transparent connection member disposed in the non-display area;
an opposite substrate facing the substrate, connected to the transparent connection member;
a gate driver positioned in the non-display area, the gate driver including a plurality of gate driving circuits,
a planarization layer disposed on the plurality of gate driving circuits; and
an undercut portion disposed between the substrate and the planarization layer,
wherein the substrate includes a second transmissive portion overlapped with the transparent connection member,
each of the plurality of gate driving circuits includes a plurality of gate driver in panel (GIP) portions, and
at least two of the plurality of GIP portions are adjacent to the second transmissive portion, and
wherein the undercut portion is disposed along an edge of the second transmissive portion.

13. The transparent display apparatus of claim 12 , further comprising a transparent filling member disposed in the display area to be adjacent to the transparent connection member.

14. The transparent display apparatus of claim 13 , wherein the transparent filling member includes an absorbing material that absorbs water, moisture or both.

15. The transparent display apparatus of claim 12 , wherein the second transmissive portion includes at least one concave portion and at least one convex portion.

16. The transparent display apparatus of claim 12 , wherein the display area includes an organic light emitting layer for emitting light,
the organic light emitting layer is extended to the non-display area, and
the organic light emitting layer disposed in the non-display area has segments disconnected from each other by the undercut portion.

17. A transparent display apparatus, comprising:
a substrate having:
a display area; and
a non-display area adjacent to the display area;
a pixel disposed in the display area, the pixel having a first transmissive portion;
a transparent connection member disposed in the non-display area;
a second transmissive portion disposed in the non-display area, the second transmissive portion being overlapped with the transparent connection member;
a gate driver positioned in the non-display area, the gate driver including a plurality of gate driving circuits;
a planarization layer disposed on a plurality of gate driving circuits; and
an undercut portion disposed between the substrate and the planarization layer,
wherein each of the plurality of pixels includes a first electrode disposed on the substrate;
an organic light emitting layer provided on the first electrode; and
a second electrode disposed on the organic light emitting layer, and
the organic light emitting layer is disposed to be extended to the non-display area in which the second transmissive portion is disposed,
wherein each of the plurality of gate driving circuits includes a plurality of gate driver in panel (GIP) portions, and
at least two of the plurality of GIP portions are adjacent to the second transmissive portion, and
wherein the undercut portion is disposed along an edge of the second transmissive portion.

18. The transparent display apparatus of claim 17 , wherein the gate driver includes:
a first gate driver in panel (GIP) line on one side of the second transmissive portion; and
a second GIP line on the opposite side of the second transmissive portion.

Assignees

• Lg Display Co Ltd

Inventors

• Park Sunghee
• Park Sunyoung
• Ko Taehee

Classifications

• H10K59/131

  Interconnections, e.g. wiring lines or terminals · CPC title

• H10K59/122

  Pixel-defining structures or layers, e.g. banks · CPC title

• H10K59/121 Primary

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

• G09G3/2092 Primary

  Details of a display terminals using a flat panel, the details relating to the control arrangement of the display terminal and to the interfaces thereto (suitable for both CRT and flat panel G09G5/003; specific for a CRT G09G1/165) · CPC title

• H10K59/12 Primary

  Active-matrix OLED [AMOLED] displays · CPC title