Display apparatus

Patent metadata

Field	Value
Publication number	US-2021399078-A1
Application number	US-202117228400-A
Country	US
Kind code	A1
Filing date	Apr 12, 2021
Priority date	Jun 18, 2020
Publication date	Dec 23, 2021
Grant date	—

Abstract

A display apparatus includes: a first pixel circuit on the substrate and including a first driving thin-film transistor and a first storage capacitor electrically connected to the first driving thin-film transistor; a second pixel circuit adjacent to the first pixel circuit and including a second driving thin-film transistor and a second storage capacitor electrically connected to the second driving thin-film transistor; a first initialization voltage line electrically connected to the first pixel circuit and the second pixel circuit; a second initialization voltage line electrically connected to the first initialization voltage line; and a driving voltage line between the first pixel circuit and the second pixel circuit, wherein a channel area of the first driving thin-film transistor or a channel area of the second driving thin-film transistor is between the second initialization voltage line and the driving voltage line.

First claim

What is claimed is:

1 . A display apparatus comprising:
a substrate; a first pixel circuit on the substrate and including a first driving thin-film transistor and a first storage capacitor electrically connected to the first driving thin-film transistor; a second pixel circuit adjacent to the first pixel circuit and including a second driving thin-film transistor and a second storage capacitor electrically connected to the second driving thin-film transistor; a first initialization voltage line electrically connected to the first pixel circuit and the second pixel circuit and extending in a first direction; a second initialization voltage line electrically connected to the first initialization voltage line and extending in a second direction crossing the first direction; and a driving voltage line extending in the second direction between the first pixel circuit and the second pixel circuit, wherein a channel area of the first driving thin-film transistor or a channel area of the second driving thin-film transistor is between the second initialization voltage line and the driving voltage line.

2 . The display apparatus of claim 1 , wherein the first pixel circuit includes a first operation control thin-film transistor electrically connected to the driving voltage line,
the second pixel circuit includes a second operation control thin-film transistor electrically connected to the driving voltage line, and the first operation control thin-film transistor and the second operation control thin-film transistor are asymmetric with respect to a virtual axis crossing between the first pixel circuit and the second pixel circuit.

3 . The display apparatus of claim 2 , wherein a semiconductor layer of the first operation control thin-film transistor is electrically connected to the driving voltage line through a first connection electrode.

4 . The display apparatus of claim 3 , wherein the first connection electrode includes:
a 1-1 st connection electrode corresponding to a portion of any one of electrodes of the first storage capacitor and contacting the driving voltage line; and a 1-2 nd connection electrode contacting the 1-1 st connection electrode and the semiconductor layer of the first operation control thin-film transistor.

5 . The display apparatus of claim 1 , wherein the first pixel circuit includes a first compensation thin-film transistor electrically connected to the first driving thin-film transistor, and
a portion of a semiconductor layer of the first compensation thin-film transistor overlaps a shield electrode electrically connected to the driving voltage line.

6 . The display apparatus of claim 5 , wherein the second pixel circuit includes a second compensation thin-film transistor electrically connected to the second driving thin-film transistor, and
a portion of a semiconductor layer of the second compensation thin-film transistor overlaps a shield electrode electrically connected to the second initialization voltage line.

7 . The display apparatus of claim 1 , wherein the second initialization voltage line is on the same layer as the driving voltage line.

8 . The display apparatus of claim 1 , wherein the second initialization voltage line is on a layer above the first initialization voltage line.

9 . The display apparatus of claim 8 , wherein the second initialization voltage line is electrically connected to the first initialization voltage line through a second connection electrode being integral with the second initialization voltage line.

10 . The display apparatus of claim 9 , wherein the first pixel circuit includes a first initialization thin-film transistor electrically connected to the first initialization voltage line, and the second connection electrode includes:
a 2-1 st connection electrode overlapping a portion of the first initialization voltage line and electrically connecting the first initialization voltage line with the second initialization voltage line; and a 2-2 nd connection electrode extending from the 2-1 st connection electrode and electrically connecting the first initialization voltage line with a semiconductor layer of the first initialization thin-film transistor.

11 . A display apparatus comprising:
a substrate; a first pixel circuit on the substrate and including a first driving thin-film transistor and a first storage capacitor electrically connected to the first driving thin-film transistor; a second pixel circuit adjacent to the first pixel circuit and including a second driving thin-film transistor and a second storage capacitor electrically connected to the second driving thin-film transistor; a first initialization voltage line electrically connected to the first pixel circuit and the second pixel circuit and extending in a first direction; a second initialization voltage line electrically connected to the first initialization voltage line and extending in a second direction crossing the first direction; and a driving voltage line extending in the second direction between the first pixel circuit and the second pixel circuit, wherein the second initialization voltage line overlaps the driving voltage line.

12 . The display apparatus of claim 11 , wherein the first pixel circuit and the second pixel circuit are symmetric with respect to a virtual axis crossing between the first pixel circuit and the second pixel circuit.

13 . The display apparatus of claim 12 , wherein the first pixel circuit includes a first compensation thin-film transistor electrically connected to the first driving thin-film transistor, and
the second pixel circuit includes a second compensation thin-film transistor electrically connected to the second driving thin-film transistor, and a portion of a semiconductor layer of the first compensation thin-film transistor and a portion of a semiconductor layer of the second compensation thin-film transistor overlap a shield electrode electrically connected to the driving voltage line.

14 . The display apparatus of claim 12 , wherein the driving voltage line is on a layer above the first initialization voltage line, and
the second initialization voltage line is on a layer above the driving voltage line.

15 . The display apparatus of claim 14 , wherein the first initialization voltage line and the second initialization voltage line are electrically connected to each other through a third connection electrode on a layer between the first initialization voltage line and the second initialization voltage line.

16 . A display apparatus comprising:
a substrate including a hole; a first pixel circuit and a second pixel circuit adjacent to each other around the hole; a first initialization voltage line electrically connected to the first pixel circuit and the second pixel circuit and extending in a first direction; a second initialization voltage line electrically connected to the first initialization voltage line and extending in a second direction crossing the first direction; and a driving voltage line extending in the second direction between the first pixel circuit and the second pixel circuit, wherein at least one of the first initialization voltage line, the second initialization voltage line, or the driving voltage line is disconnected around the hole.

17 . The display apparatus of claim 16 , wherein the first pixel circuit includes a first operation control thin-film transistor electrically connected to the driving voltage line,
the second pixel circuit includes a second operation control thin-film transistor electrically connected to

Assignees

• Samsung Display Co Ltd

Inventors

• Um Nuree
• Kim Mihae
• Kim Minjeong
• Park Hyungjun
• An Junyong

Classifications

• H10D86/441

  Interconnections, e.g. scanning lines · CPC title

• H10D86/481

  integrated with passive devices, e.g. auxiliary capacitors · CPC title

• H10D86/60

  wherein the TFTs are in active matrices · CPC title

• H10D86/423

  comprising semiconductor materials not belonging to the Group IV, e.g. InGaZnO · CPC title

• G09G2320/0214

  with crosstalk due to leakage current of pixel switch in active matrix panels · CPC title