US-12628505-B2 - Display apparatus

US12628505B2US 12628505 B2US12628505 B2US 12628505B2US-12628505-B2

Abstract

A display apparatus includes: a base substrate; a thin film transistor disposed on the base substrate and including an active pattern; an insulating layer disposed on the active pattern of the thin film transistor; a connection electrode disposed on the insulating layer, and electrically connected to the thin film transistor, wherein the connection electrode includes a curved wiring portion; a first via insulating layer covering the connection electrode; a first electrode disposed on the first via insulating layer; a light emitting layer disposed on the first electrode and at least partially overlapping the connection electrode; and a second electrode disposed on the light emitting layer.

Inventors

Jinsook BANG
Sang Hoon YIM
Dong Hoon Kim
Jin Wook Jeong
Jinyoung Choi
Eunjeong HONG

Assignees

SAMSUNG DISPLAY CO., LTD.

Dates

Publication Date: 20260512
Application Date: 20230103
Priority Date: 20190918

Claims (20)

1 . A display apparatus comprising: a base substrate; a thin film transistor disposed on the base substrate and including an active pattern; an insulating layer disposed on the active pattern of the thin film transistor; a first conductive layer disposed on the insulating layer and including an electrode electrically connected to the thin film transistor, wherein the electrode includes a curved wiring portion in a plan view; a first via insulating layer directly contacting an uppermost surface of the electrode and covering an entirety of the uppermost surface of the electrode; a first electrode disposed on an upper surface of the first via insulating layer; a light emitting layer disposed on the first electrode and at least partially overlapping the electrode; and a second electrode disposed on the light emitting layer.
2 . The display apparatus of claim 1 , further comprising: a plurality of data lines arranged along a first direction and included in the first conductive layer, wherein each of the data lines extend in a second direction crossing the first direction, wherein the electrode includes a first contact portion, a second contact portion spaced apart from the first contact portion in the second direction, and the curved wiring portion which connects the first contact portion to the second contact portion.
3 . The display apparatus of claim 2 , wherein a data line, of the plurality of data lines, adjacent to the electrode includes a straight line portion and a curved line portion connected to the straight line portion, wherein the curved line portion is adjacent to the curved wiring portion of the electrode.
4 . The display apparatus of claim 1 , wherein the light emitting layer includes a blue light emitting layer configured to emit blue light.
5 . The display apparatus of claim 4 , further comprising: a red light emitting layer spaced apart from the blue light emitting layer and configured to emit red light; and a green light emitting layer spaced apart from the blue light emitting layer and the red light emitting layer and configured to emit green light, wherein a thickness of the blue light emitting layer is smaller than a thickness of each of the red and green light emitting layers.
6 . The display apparatus of claim 1 , further comprising: a plurality of power lines arranged along a first direction and included in the first conductive layer, wherein each of the power lines extend in a second direction crossing the first direction, wherein the electrode includes a first contact portion, a second contact portion spaced apart from the first contact portion in the second direction, and the curved wiring portion which connects the first contact portion to the second contact portion, and wherein a power line, of the plurality of power lines, adjacent to the electrode includes a straight line portion and a curved line portion connected to the straight line portion, wherein the curved line portion is adjacent to the curved wiring portion of the electrode.
7 . The display apparatus of claim 1 , wherein the electrode includes a first contact portion, a second contact portion spaced apart from the first contact portion, and the curved wiring portion connecting the first contact portion to the second contact portion, and wherein the curved wiring portion has an annular shape.
8 . The display apparatus of claim 7 , wherein the curved wiring portion overlaps the light emitting layer.
9 . The display apparatus of claim 1 , wherein the electrode includes a first contact portion, a second contact portion spaced apart from the first contact portion, and the curved wiring portion connecting the first contact portion to the second contact portion, and wherein the curved wiring portion has a curved shape.
10 . The display apparatus of claim 1 , further comprising: a second conductive layer including source and drain electrodes and disposed between the base substrate and the first conductive layer; and a second via insulating layer disposed between the source and drain electrodes and the electrode, wherein the electrode is electrically connected to the drain electrode through a contact hole formed through the second via insulating layer.
11 . The display apparatus of claim 10 , wherein the electrode includes a contact portion and the curved wiring portion connected to the contact portion, and wherein the contact portion of the electrode is electrically connected to the first electrode through a contact hole formed through the first via insulating layer.
12 . The display apparatus of claim 11 , wherein the curved wiring portion of the electrode has an annular shape, and wherein the curved wiring portion overlaps the light emitting layer.
13 . The display apparatus of claim 11 , wherein the curved wiring portion of the electrode has a curved shape, and wherein the curved wiring portion overlaps the light emitting layer.
14 . The display apparatus of claim 10 , wherein the electrode includes a first contact portion, a second contact portion spaced apart from the first contact portion, and the curved wiring portion which connects the first contact portion to the second contact portion, and wherein each of the first contact portion and the second contact portion is electrically connected to a conductive pattern of another layer through a contact hole formed through the second via insulating layer.
15 . The display apparatus of claim 1 , wherein a concavo-convex portion corresponding to the electrode is formed on a top surface of the first via insulating layer.
16 . The display apparatus of claim 15 , wherein a concavo-convex portion corresponding to the concavo-convex portion of the first via insulating layer is formed on a top surface of the first electrode.
17 . A display apparatus comprising: a base substrate; a thin film transistor disposed on the base substrate and including an active pattern; an insulating layer disposed on the active pattern of the thin film transistor; a conductive layer disposed on the insulating layer and including an electrode electrically connected to the thin film transistor, wherein the electrode includes a dummy portion including a horizontal portion extending in a first direction in a plan view; a via insulating layer directly contacting an uppermost surface of the electrode and covering an entirety of the uppermost surface of the electrode; a first electrode disposed on an upper surface of the via insulating layer; a light emitting layer disposed on the first electrode and overlapping the dummy portion of the electrode; and a second electrode disposed on the light emitting layer, wherein the electrode further includes a connection wiring portion extending in a second direction that intersects the first direction in a plan view.
18 . The display apparatus of claim 17 , wherein the dummy portion further includes a vertical portion extending in a second direction substantially perpendicular to the first direction.
19 . The display apparatus of claim 17 , wherein the electrode further includes a first contact portion, and a second contact portion spaced apart from the first contact portion in the second direction, wherein the connection wiring portion connects the first contact portion to the second contact portion, and wherein the dummy portion extends from the first contact portion, the second contact portion, or the connection wiring portion, and wherein the dummy portion overlaps the light emitting layer.
20 . The display apparatus of claim 17 , wherein the light emitting layer is a blue light emitting layer configured to emit blue light, wherein the display apparatus further comprises: a red light emitting layer spaced apart from the blue light emitting layer and configured to emit red light; and a green light emitting layer spaced apart from the blue light emitting layer and the red light emitting layer and configured to emit green light, and wherein a thickness of the blue light emitting layer is smaller than a thickness of each of the red and green light emitting layers.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This application is a continuation of U.S. patent application Ser. No. 16/899,789 filed on Jun. 12, 2020, which claims priority under 35 USC § 119 to Korean Patent Application No. 10-2019-0114783 filed on Sep. 18, 2019 in the Korean Intellectual Property Office (KIPO), the disclosures of which are incorporated by reference herein in their entireties. TECHNICAL FIELD Exemplary embodiments of the present inventive concept relate generally to a display apparatus. More particularly, exemplary embodiments of the present inventive concept relate to a display apparatus having a connection electrode. DISCUSSION OF THE RELATED ART As the technology improves, display products having smaller sizes, lighter weights, and superior performance are being produced. Conventional cathode ray tube (CRT) televisions have been widely used for display apparatuses because of their performance and price. Recently, however, a display apparatus such as a plasma display apparatus, a liquid crystal display apparatus, and an organic light emitting diode display apparatus have been increasingly used because, when compared to a CRT, these display apparatuses provide increased miniaturization or portability, are light in weight, and have relatively low power consumption. The organic light emitting diode display apparatus typically includes a substrate, a plurality of wirings disposed on the substrate, and a light emitting structure disposed on the wirings. SUMMARY According to an exemplary embodiment of the present inventive concept, a display apparatus includes: a base substrate; a thin film transistor disposed on the base substrate and including an active pattern; an insulating layer disposed on the active pattern of the thin film transistor; a connection electrode disposed on the insulating layer, and electrically connected to the thin film transistor, wherein the connection electrode includes a curved wiring portion; a first via insulating layer covering the connection electrode; a first electrode disposed on the first via insulating layer; a light emitting layer disposed on the first electrode and at least partially overlapping the connection electrode; and a second electrode disposed on the light emitting layer. In an exemplary embodiment of the present inventive concept, the display apparatus further includes: a plurality of data lines arranged along a first direction, wherein each of the data lines extend in a second direction crossing the first direction, wherein the connection electrode includes a first contact portion, a second contact portion spaced apart from the first contact portion in the second direction, and the curved wiring portion which connects the first contact portion to the second contact portion. In an exemplary embodiment of the present inventive concept, a data line, of the plurality of data lines, adjacent to the connection electrode includes a straight line portion and a curved line portion connected to the straight line portion, wherein the curved line portion is adjacent to the curved wiring portion of the connection electrode. In an exemplary embodiment of the present inventive concept, the light emitting layer includes a blue light emitting layer configured to emit blue light. In an exemplary embodiment of the present inventive concept, the display apparatus further includes: a red light emitting layer spaced apart from the blue light emitting layer and configured to emit red light; and a green light emitting layer spaced apart from the blue light emitting layer and the red light emitting layer and configured to emit green light, wherein a thickness of the blue light emitting layer is smaller than a thickness of each of the red and green light emitting layers. In an exemplary embodiment of the present inventive concept, the display apparatus further includes: a plurality of power lines arranged along a first direction, wherein each of the power lines extend in a second direction crossing the first direction, wherein the connection electrode includes a first contact portion, a second contact portion spaced apart from the first contact portion in the second direction, and the curved wiring portion which connects the first contact portion to the second contact portion, and wherein a power line, of the plurality of power lines, adjacent to the connection electrode includes a straight line portion and a curved line portion connected to the straight line portion, wherein the curved line portion is adjacent to the curved wiring portion of the connection electrode. In an exemplary embodiment of the present inventive concept, the connection electrode includes a first contact portion, a second contact portion spaced apart from the first contact portion, and the curved wiring portion connecting the first contact portion to the second contact portion, and wherein the curved wiring portion has an annular shape. In an exemplary embodiment of the present inventive concept, the curv