Display apparatus

Patent metadata

Field	Value
Publication number	US-2024081123-A1
Application number	US-202318110802-A
Country	US
Kind code	A1
Filing date	Feb 16, 2023
Priority date	Sep 5, 2022
Publication date	Mar 7, 2024
Grant date	—

Abstract

A display apparatus includes a substrate, a first light-emitting element disposed over the substrate to emit light, a first dummy light-emitting element disposed over the substrate to emit light of a same color as a color of the light emitted from the first light-emitting element, an input sensing layer disposed on the first light-emitting element and the first dummy light-emitting element, and a light-blocking layer disposed on the input sensing layer, where an opening is defined through the light-blocking layer to overlap the first light-emitting element, and the input sensing layer includes a diffraction structure disposed to overlap the first dummy light-emitting element.

First claim

What is claimed is:

1 . A display apparatus comprising:
a substrate; a first light-emitting element disposed over the substrate, wherein the first light-emitting element emits light; a first dummy light-emitting element disposed over the substrate, wherein first dummy light-emitting element emits light of a same color as a color of the light emitted from the first light-emitting element; an input sensing layer disposed on the first light-emitting element and the first dummy light-emitting element; and a light-blocking layer disposed on the input sensing layer, wherein an opening is defined through the light-blocking layer to overlap the first light-emitting element, wherein the input sensing layer includes a diffraction structure disposed to overlap the first dummy light-emitting element.

2 . The display apparatus of claim 1 , wherein
the input sensing layer includes at least one insulating layer, and at least one hole is defined through a portion of the at least one insulating layer corresponding to the diffraction structure.

3 . The display apparatus of claim 2 , wherein the input sensing layer further includes an upper insulating layer at least partially filling the at least one hole.

4 . The display apparatus of claim 3 , wherein a refractive index of the upper insulating layer is less than a refractive index of the at least one insulating layer.

5 . The display apparatus of claim 2 , wherein
the at least one insulating layer includes a first sub-insulating layer and a second sub-insulating layer on the first sub-insulating layer, and a refractive index of the second sub-insulating layer is less than a refractive index of the first sub-insulating layer.

6 . The display apparatus of claim 1 , further comprising:
a pixel circuit comprising a thin-film transistor and a storage capacitor, wherein the pixel circuit is electrically connected to the first light-emitting element and the first dummy light-emitting element.

7 . The display apparatus of claim 1 , wherein each of the first light-emitting element and the first dummy light-emitting element comprises:
a first electrode; a light-emitting material disposed on the first electrode; and a second electrode disposed on the light-emitting material, wherein the first electrode of the first light-emitting element is connected to the first electrode of the first dummy light-emitting element.

8 . The display apparatus of claim 1 , wherein
the input sensing layer includes a plurality of touch electrodes, and the plurality of touch electrodes includes metal lines crossing each other to have a mesh shape in a plan view, wherein each of the metal lines extends from a crossing point of the metal lines, and the first dummy light-emitting element overlaps the crossing point of the metal lines.

9 . The display apparatus of claim 1 , wherein the light-blocking layer overlaps the first dummy light-emitting element.

10 . The display apparatus of claim 1 , further comprising:
a second dummy light-emitting element arranged to be adjacent to the first dummy light-emitting element and spaced apart in a first direction from the first dummy light-emitting element; a third dummy light-emitting element arranged to be adjacent to the first dummy light-emitting element and spaced apart from the first dummy light-emitting element in a second direction crossing the first direction; and a fourth dummy light-emitting element spaced apart in the first direction from the third dummy light-emitting element and spaced apart in the second direction from the second dummy light-emitting element.

11 . The display apparatus of claim 10 , wherein
the first dummy light-emitting element emits light of a same color as a color of light of the fourth dummy light-emitting element, and the second dummy light-emitting element emits light of a same color as a color of light of the third dummy light-emitting element, which is different from the color of light of the fourth dummy light-emitting element.

12 . The display apparatus of claim 10 , wherein
the first dummy light-emitting element emit lights of a color different from a color of light of the fourth dummy light-emitting element, and the second dummy light-emitting element emits light of a color different from a color of light of the third dummy light-emitting element.

13 . The display apparatus of claim 10 , wherein the first dummy light-emitting element, the second dummy light-emitting element, the third dummy light-emitting element, and the fourth dummy light-emitting element emit light of a same color as each other.

14 . A display apparatus comprising:
a substrate; a first light-emitting element disposed over the substrate, wherein the first light-emitting element emits light; a first dummy light-emitting element disposed over the substrate, wherein the first dummy light-emitting element emits light of a same color as a color of the light emitted from the first light-emitting element; a light-blocking layer disposed on the first light-emitting element and the first dummy light-emitting element, wherein the light-blocking layer includes a light-blocking portion, through which an opening is defined, the opening corresponds to the first light-emitting element, and the light-blocking portion corresponds to the first dummy light-emitting element; and at least one insulating layer disposed between the first dummy light-emitting element and the light-blocking layer, wherein the at least one insulating layer includes a diffraction structure in which at least one hole is defined to overlap the first dummy light-emitting element.

15 . The display apparatus of claim 14 , further comprising
a bank layer disposed on a first electrode of the first light-emitting element, wherein a first light-emitting opening is defined through the bank layer to overlap the first electrode, wherein a width of the first light-emitting opening of the bank layer is less than a width of the opening of the light-blocking layer.

16 . The display apparatus of claim 14 , wherein a first electrode of the first dummy light-emitting element is connected to the first electrode of the first light-emitting element.

17 . The display apparatus of claim 16 , further comprising:
an upper insulating layer disposed on the at least one insulating layer and partially filling the at least one hole of the diffraction structure.

18 . The display apparatus of claim 17 , wherein a refractive index of the upper insulating layer is less than a refractive index of the at least one insulating layer.

19 . The display apparatus of claim 14 , wherein
the at least one insulating layer includes a first sub-insulating layer and a second sub-insulating layer on the first sub-insulating layer, and a refractive index of the second sub-insulating layer is less than a refractive index of the first sub-insulating layer.

20 . The display apparatus of claim 14 , further comprising:
a plurality of touch electrodes disposed on the first light-emitting element and the first dummy light-emitting element, wherein the plurality of touch electrodes includes metal lines crossing each other to have a mesh shape in a plan view, wherein each of the metal lines extends from a crossing point of the metal lines, and the first dummy light-emitting element overlaps the crossing point of the metal lines.

Assignees

• Samsung Display Co Ltd

Inventors

• Lee Eonjoo
• Park Kwangwoo
• Shim Donghwan
• Lee Jinyong
• Jang Cheol
• Jo Yongseon

Classifications

• H10K59/877

  comprising scattering means · CPC title

• H10K59/8792

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

• H10K59/879

  comprising refractive means, e.g. lenses · CPC title

• H10K59/121

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

• H10K59/80515

  characterised by their shape · CPC title