Organic light-emitting diode display apparatus including first and second initialization connection lines maintaining initialization voltages

Patent metadata

Field	Value
Publication number	US-12446416-B2
Application number	US-202117186865-A
Country	US
Kind code	B2
Filing date	Feb 26, 2021
Priority date	Aug 24, 2020
Publication date	Oct 14, 2025
Grant date	Oct 14, 2025

Abstract

A display apparatus includes first initialization voltage lines extending in a first direction, second initialization voltage lines extending in the first direction, first initialization connection lines extending in a second direction intersecting the first direction and electrically connecting the first initialization voltage lines to each other, second initialization connection lines extending in the second direction and electrically connecting the second initialization voltage lines to each other, and pixels connected to the first initialization voltage lines, the second initialization voltage lines, the first initialization connection lines and the second initialization connection lines.

First claim

What is claimed is:

1. A display apparatus comprising:
first initialization voltage lines each of which extends in a first direction, wherein the first initialization voltage lines are sequentially arranged in a second direction intersecting the first direction;
second initialization voltage lines extending in the first direction, wherein the second initialization voltage lines are disconnected from the first initialization voltage lines;
a first initialization connection line extending in the second direction, wherein the first initialization connection line electrically connects the first initialization voltage lines to each other;
a second initialization connection line extending in the second direction, wherein the second initialization connection line electrically connects the second initialization voltage lines to each other; and
pixels electrically connected to the first initialization voltage lines and the second initialization voltage lines,
wherein a first initialization voltage transmitted through the first initialization voltage lines and a second initialization voltage transmitted through the second initialization voltage lines are respectively applied to two different transistors of each of the pixels,
wherein a first group of the pixels through which the first initialization connection line passes are electrically connected to a first initialization voltage line by the first initialization connection line, and
wherein the display apparatus further comprises first auxiliary initialization connection lines located in a second group of the pixels through which the first initialization connection line does not pass, wherein the first auxiliary initialization connection lines are electrically connected to the first initialization voltage line.

2. The display apparatus of claim 1 , wherein each of the pixels comprises:
an organic light-emitting diode;
a first transistor which controls, in response to a voltage applied to a first node, an amount of current flowing from a second node electrically connected to a power supply voltage line to the organic light-emitting diode;
a fourth transistor connected between the first node and the first initialization voltage line, wherein the fourth transistor initializes a voltage of a first gate electrode of the first transistor in response to a voltage applied to a fourth gate electrode thereof; and
a seventh transistor connected between the second initialization voltage line and a third node between the first transistor and the organic light-emitting diode, wherein the seventh transistor initializes a voltage of a pixel electrode of the organic light-emitting diode in response to a voltage applied to a seventh gate electrode thereof.

3. The display apparatus of claim 1 , wherein the first initialization connection line passes through each of the pixels arranged in the first direction.

4. The display apparatus of claim 1 , wherein
each of one of even-numbered columns and odd-numbered columns of the pixels includes the first initialization connection line, and
each of another of the even-numbered columns and the odd-numbered columns of the pixels includes the second initialization connection line.

5. The display apparatus of claim 1 , wherein, each of every m columns of the pixels includes the first initialization connection line, wherein m is a natural number greater than 1.

6. The display apparatus of claim 5 , wherein the second initialization connection line is arranged between neighboring first initialization connection lines.

7. The display apparatus of claim 5 , wherein columns of the pixels include the first initialization connection line and the second initialization connection line which are arranged alternately in the first direction.

8. The display apparatus of claim 1 , further comprising:
data lines extending in the second direction,
wherein the first initialization connection line and the second initialization connection line are disposed on a layer on which the data lines are disposed.

9. The display apparatus of claim 8 , wherein the first initialization connection line and the second initialization connection line comprise a same material as a material included in the data lines.

10. The display apparatus of claim 8 , wherein the first initialization voltage lines and the second initialization voltage lines are disposed under the first initialization connection line.

11. The display apparatus of claim 1 , further comprising:
power supply voltage lines extending in the second direction,
wherein the first initialization connection line and the second initialization connection line are disposed on a layer on which the power supply voltage lines are disposed.

12. The display apparatus of claim 11 , wherein the first initialization connection line and the second initialization connection line comprise a same material as a material included in the power supply voltage lines.

13. The display apparatus of claim 11 , wherein the first initialization voltage lines and the second initialization voltage lines are disposed under the first initialization connection line.

14. The display apparatus of claim 1 , further comprising:
a substrate, wherein a through-hole are defined through a top surface and a bottom surface of the substrate,
wherein the pixels are located outside the through-hole of the substrate.

15. A display apparatus comprising:
first initialization voltage lines each of which extends in a first direction, wherein the first initialization voltage lines are sequentially arranged in a second direction intersecting the first direction;
second initialization voltage lines extending in the first direction, wherein the second initialization voltage lines are disconnected from the first initialization voltage lines;
a first initialization connection line extending in the second direction, wherein the first initialization connection line electrically connects the first initialization voltage lines to each other;
a second initialization connection line extending in the second direction, wherein the second initialization connection line electrically connects the second initialization voltage lines to each other; and
pixels electrically connected to the first initialization voltage lines and the second initialization voltage lines,
wherein a first initialization voltage transmitted through the first initialization voltage lines and a second initialization voltage transmitted through the second initialization voltage lines are respectively applied to two different transistors of each of the pixels,

wherein a first group of the pixels through which the first initialization connection line passes are electrically connected to a first initialization voltage line by the first initialization connection line,
wherein a third group of the pixels through which the second initialization connection line passes are electrically connected to a second initialization voltage line by the second initialization connection line, and
wherein the display apparatus further comprises second auxiliary initialization connection lines located in a fourth group of the pixels through which the second initialization connection line does not pass, wherein the second auxiliary initialization connection lines are electrically connected to the second initialization voltage line.

16. A display apparatus comprising:
a substrate;
first initialization voltage lines and second initialization voltage lines, which are disposed on the substrate and extending in a first direction, wherein each of the first initialization voltage lines are seq

Assignees

• Samsung Display Co Ltd

Inventors

• Choi Junwon
• Lee Jaesic
• Kim Jaewon
• Min Junyoung
• Jang Jinhee

Classifications

• H10K59/1213

  the pixel elements being TFTs · CPC title

• H10D86/451

  characterised by the compositions or shapes of the interlayer dielectrics · CPC title

• H10D86/441

  Interconnections, e.g. scanning lines · CPC title

• G09G3/3258

  with pixel circuitry controlling the voltage across the light-emitting element · CPC title

• H10K59/131 Primary

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