Display apparatus and method of manufacturing the same

Patent metadata

Field	Value
Publication number	US-2023106948-A1
Application number	US-202217850318-A
Country	US
Kind code	A1
Filing date	Jun 27, 2022
Priority date	Oct 5, 2021
Publication date	Apr 6, 2023
Grant date	—

Abstract

A display apparatus includes a pixel electrode, a pixel-defining layer covering edges of the pixel electrode, where an opening is defined through the pixel-defining layer to expose a central portion of the pixel electrode, and a light-condensing layer disposed over the pixel electrode to correspond to the opening. A first first slope angle of a first first side surface of the light-condensing layer with respect to a lower surface of the light-condensing layer is different from a second first slope angle of a second first side surface of the light-condensing layer with respect to the lower surface.

First claim

What is claimed is:

1 . A display apparatus comprising:
a pixel electrode; a pixel-defining layer covering edges of the pixel electrode, wherein an opening is defined through the pixel-defining layer to expose a central portion of the pixel electrode; and a light-condensing layer disposed over the pixel electrode to correspond to the opening, wherein a first first slope angle of a first first side surface of the light-condensing layer with respect to a lower surface of the light-condensing layer is different from a second first slope angle of a second first side surface of the light-condensing layer with respect to the lower surface of the light-condensing layer, and wherein the second first side surface is opposite to the first first side surface.

2 . The display apparatus of claim 1 , wherein the light-condensing layer has a flat upper surface.

3 . The display apparatus of claim 1 , wherein each of the first first slope angle and the second first slope angle is an acute angle.

4 . The display apparatus of claim 1 , wherein
the first first slope angle is in a first angle range, and the second first slope angle is in a second angle range different from the first angle range.

5 . The display apparatus of claim 4 , wherein
the first angle range is greater than or equal to about 70°, and the second angle range is less than about 70°.

6 . The display apparatus of claim 1 , further comprising:
an additional layer covering the light-condensing layer and having a refractive index less than a refractive index of the light-condensing layer.

7 . The display apparatus of claim 6 , further comprising:
a polarizing plate disposed on the additional layer, wherein the additional layer is a pressure-sensitive adhesive layer.

8 . The display apparatus of claim 1 ,
wherein the pixel electrode is disposed over a substrate, wherein a third first slope angle of a third first side surface of the light-condensing layer with respect to the lower surface of the light-condensing layer is different from a fourth first slope angle of a fourth first side surface of the light-condensing layer with respect to the lower surface of the light-condensing layer, wherein the first first side surface is opposite to the second first side surface in a first direction, and the fourth first side surface is opposite to the third first side surface in a second direction parallel to the substrate and crossing the first direction.

9 . The display apparatus of claim 8 , wherein each of the third first slope angle and the fourth first slope angle is an acute angle.

10 . The display apparatus of claim 8 , wherein
the third first slope angle is in a third angle range, and the fourth first slope angle is in a fourth angle range different from the third angle range.

11 . The display apparatus of claim 10 , wherein
the third angle range is less than about 70°, and the fourth angle range is greater than or equal to about 70°.

12 . The display apparatus of claim 8 , wherein each of the third first slope angle and the fourth first slope angle is different from the first first slope angle and the second first slope angle.

13 . A display apparatus comprising:
a first pixel electrode and a second pixel electrode apart from each other in a first direction; a pixel-defining layer covering edges of each of the first pixel electrode and the second pixel electrode, wherein a first opening is defined through the pixel-defining layer to expose a central portion of the first pixel electrode, and a second opening is defined through the pixel-defining layer to expose a central portion of the second pixel electrode; a first light-condensing layer disposed over the first pixel electrode to correspond to the first opening, wherein a first first slope angle of a first first side surface of the first light-condensing layer with respect to a lower surface of the first light-condensing layer is different from a second first slope angle of a second first side surface of the first light-condensing layer with respect to the lower surface of the first light-condensing layer, and the second first side surface is opposite to the first first side surface in the first direction; and a second light-condensing layer disposed over the second pixel electrode to correspond to the second opening, wherein a first second slope angle of a first second side surface of the second light-condensing layer with respect to a lower surface of the second light-condensing layer is different from a second second slope angle of a second second side surface of the second light-condensing layer with respect to the lower surface of the second light-condensing layer, and the second second side surface is opposite to the first second side surface in the first direction.

14 . The display apparatus of claim 13 , wherein each of the first light-condensing layer and the second light-condensing layer has a flat upper surface.

15 . The display apparatus of claim 13 , wherein each of the first first slope angle, the second first slope angle, the first second slope angle, and the second second slope angle is an acute angle.

16 . The display apparatus of claim 13 , wherein
each of the first first slope angle and the second first slope angle is in a first angle range, and each of the first second slope angle and the second second slope angle is in a second angle range different from the first angle range.

17 . The display apparatus of claim 16 , wherein
the first angle range is greater than or equal about 70°, and the second angle range is less than about 70°.

18 . The display apparatus of claim 13 , further comprising:
an additional layer covering the first light-condensing layer and the second light-condensing layer and having a refractive index less than a refractive index of the first light-condensing layer and the second light-condensing layer.

19 . The display apparatus of claim 18 , further comprising:
polarizing plate disposed on the additional layer, wherein the additional layer is a pressure-sensitive adhesive layer.

20 . A method of manufacturing a display apparatus, the method comprising:
forming a pixel electrode on a substrate; forming a pixel-defining layer covering edges of the pixel electrode on the pixel electrode, wherein an opening is formed through the pixel-defining layer to expose a central portion of the pixel electrode; forming an insulating layer including a photoresist component over the pixel-defining layer; and forming a light-condensing layer by patterning the insulating layer by using a half-tone mask or a slit-mask, wherein the light-condensing layer is disposed over the pixel electrode to correspond to the opening of the pixel-defining layer, and a first first slope angle of a first first side surface of the light-condensing layer with respect to a lower surface of the light-condensing layer is different from a second first slope angle of a second first side surface of the light-condensing layer with respect to the lower surface of the light-condensing layer, and the second first side surface is a side surface opposite to the first first side surface.

Assignees

• Samsung Display Co Ltd

Inventors

• Lim Jaeik
• Lee Seongjun
• Lee Hyungseok
• Cho Jaebum

Classifications

• H10K59/8793

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

• H10K59/879

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

• H10K71/00

  Manufacture or treatment specially adapted for the organic devices covered by this subclass · CPC title

• H10K59/122

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

• H10K59/40 Primary

  OLEDs integrated with touch screens · CPC title