Display apparatus and manufacturing method thereof

Patent metadata

Field	Value
Publication number	US-11315993-B2
Application number	US-201916508265-A
Country	US
Kind code	B2
Filing date	Jul 10, 2019
Priority date	Sep 4, 2018
Publication date	Apr 26, 2022
Grant date	Apr 26, 2022

Abstract

A display apparatus includes a plurality of pixels. Each pixel of the pixels includes a thin film transistor, a first insulating pattern positioned on the thin film transistor, a pixel electrode positioned on the first insulating pattern, and a second insulating pattern covering an edge of the pixel electrode and contacting an edge of the first insulating pattern.

First claim

What is claimed is:

1. A display apparatus comprising:
a plurality of pixels, wherein each pixel of the pixels comprises:
a thin film transistor;
a first insulating pattern positioned on the thin film transistor;
a pixel electrode positioned on the first insulating pattern; and
a second insulating pattern covering an edge of the pixel electrode,

wherein the second insulating pattern covers a side surface of the first insulating pattern,
wherein each of the first insulating patterns and the second insulating patterns of the plurality of pixels is in a form of an island, each of the first insulating patterns and the second insulating patterns in the form of the island being spaced from other first insulating patterns and other second insulating patterns in a plan view of the display apparatus and a cross-sectional view of the display apparatus.

2. The display apparatus of claim 1 ,
wherein the first insulating pattern comprises a hole partially exposing an electrode of the thin film transistor.

3. The display apparatus of claim 2 ,
wherein the second insulating pattern overlaps an edge of the hole.

4. The display apparatus of claim 1 , further comprising an insulating layer positioned between a component of the thin film transistor and the first insulating pattern.

5. The display apparatus of claim 1 ,
wherein the pixels comprise a first pixel and a second pixel, and
wherein a first distance between the first insulating pattern of the first pixel and the first insulating pattern of the second pixel is greater than a second distance between the second insulating pattern of the first pixel and the second insulating pattern of the second pixel.

6. A display apparatus comprising:
an insulator;
thin film transistors;
a first insulating layer on the thin film transistors;
pixel electrodes on the first insulating layer; and
a second insulating layer covering edges of the pixel electrodes,
wherein the first insulating layer comprises a plurality of first insulating patterns having different sizes, and/or the second insulating layer comprises a plurality of second insulating patterns having different sizes,
wherein the first insulating patterns and the second insulating patterns are in a form of an island and spaced from other first insulating patterns and other second insulating patterns in a plan view of the display apparatus and a cross-sectional view of the display apparatus,
wherein the first insulating patterns include a first insulating island and a second insulating island that are spaced from each other,
wherein the pixel electrodes include a first pixel electrode and a second pixel electrode that are respectively disposed on the first insulating island and the second insulating island, and
wherein the first insulating island is positioned between the first pixel electrode and the insulator, directly contacts the insulator, exposes an exposed portion of the insulator, and is surrounded by the exposed portion of the insulator in the plan view of the display apparatus.

7. The display apparatus of claim 6 ,
wherein a first distance between the first insulating patterns is greater than a second distance between the second insulating patterns.

8. The display apparatus of claim 6 ,
wherein the number of the first insulating patterns of the first insulating layer is the same as the number of the second insulating patterns of the second insulating layer.

9. The display apparatus of claim 6 ,
the number of the first insulating patterns of the first insulating layer is different from the number of the second insulating patterns of the second insulating layer.

10. The display apparatus of claim 6 ,
wherein each of some of the plurality of first insulating patterns is shared by at least two pixels and each of some of the plurality of second insulating patterns is shared by at least two pixels.

Assignees

• Samsung Display Co Ltd

Inventors

• Yang Yonghoon
• Ko Minsuk
• Kim Sikwang
• Kim Taegyun

Classifications

• H10K59/123

  Connection of the pixel electrodes to the thin film transistors [TFT] · CPC title

• H10K59/124 Primary

  Insulating layers formed between TFT elements and OLED elements · CPC title

• H10K59/1213 Primary

  the pixel elements being TFTs · CPC title

• H10K59/873

  Encapsulations · CPC title

• H10K59/8052

  Cathodes · CPC title