Display apparatus

Patent metadata

Field	Value
Publication number	US-11877487-B2
Application number	US-202217883520-A
Country	US
Kind code	B2
Filing date	Aug 8, 2022
Priority date	Aug 9, 2021
Publication date	Jan 16, 2024
Grant date	Jan 16, 2024

Abstract

A display apparatus including first-through-third pixels sequentially arranged in a row direction, a first shielding electrode arranged between the first pixel and the second pixel, a first voltage line configured to transmit a first initialization voltage, a second voltage line configured to transmit a second initialization voltage, a first contact plug connecting the first pixel and the second pixel to the first voltage line, a second contact plug connecting the second pixel and the third pixel to the second voltage line, and a third contact plug connecting the first shielding electrode to the first voltage line.

First claim

What is claimed is:

1. A display apparatus comprising:
first-through-third pixels sequentially arranged in a row direction;
a first shielding electrode arranged between the first pixel and the second pixel;
a first voltage line configured to transmit a first initialization voltage;
a second voltage line configured to transmit a second initialization voltage;
a first contact plug connecting the first pixel and the second pixel to the first voltage line;
a second contact plug connecting the second pixel and the third pixel to the second voltage line; and
a third contact plug connecting the first shielding electrode to the first voltage line.

2. The display apparatus of claim 1 , further comprising:
a second shielding electrode arranged between the second pixel and the third pixel; and
a fourth contact plug connecting the second shielding electrode to the second voltage line.

3. The display apparatus of claim 1 , further comprising first-through-third power lines sequentially arranged and apart from each other in the row direction,
wherein:
the first power line is configured to transmit a driving voltage to the first pixel;
the second power line is configured to transmit the driving voltage to the second pixel; and
the third power line is configured to transmit the driving voltage to the third pixel.

4. The display apparatus of claim 3 , further comprising:
a third shielding electrode adjacent to the first shielding electrode in a column direction; and
at least one fifth contact plug connecting the third shielding electrode to at least one of the first-through-third power lines.

5. The display apparatus of claim 3 , wherein:
the first voltage line extends in a column direction and arranged between the first power line and the second power line;
the second voltage line extends in the column direction and arranged between the second power line and the third power line;
the first power line and the second power line are symmetrical with each other with respect to the first voltage line; and
the second power line and the third power line are symmetrical with each other with respect to the second voltage line.

6. The display apparatus of claim 3 , wherein the first-through-third power lines have a same shape in a plan view.

7. The display apparatus of claim 3 , further comprising:
a first connection electrode connecting the first power line with the second power line; and
a second connection electrode connecting the second power line with the third power line,
wherein:
the first-through-third power lines extend in a column direction; and
the first connection electrode and the second connection electrode extend in the row direction.

8. The display apparatus of claim 7 , wherein a first length of the first connection electrode in the row direction is greater than a second length of the second connection electrode in the row direction.

9. The display apparatus of claim 7 , wherein a first length of the first connection electrode in the row direction is equal to a second length of the second connection electrode in the row direction.

10. The display apparatus of claim 1 , further comprising:
a first data line configured to transmit a first data voltage to the first pixel; and
a second data line configured to transmit a second data voltage to the second pixel,
wherein the first data line and the second data line at least partially overlap the first shielding electrode.

11. The display apparatus of claim 1 , wherein each of the first-through-third pixels comprises:
a light-emitting device;
a driving transistor configured to control a current flowing to the light-emitting device according to a gate-source voltage;
a first initialization transistor configured to apply one of the first initialization voltage and the second initialization voltage to an electrode of the driving transistor in response to a first scan signal; and
a second initialization transistor configured to apply the other of the first initialization voltage and the second initialization voltage to an electrode of the light-emitting device in response to a second scan signal.

12. A display apparatus comprising:
a semiconductor pattern integrally provided and continually extending in a row direction;
at least one first shielding electrode arranged on a same layer as the semiconductor pattern and apart from the semiconductor pattern;
at least one first voltage line configured to transmit a first initialization voltage; and
at least one first contact plug connecting the at least one first shielding electrode to the at least one first voltage line.

13. The display apparatus of claim 12 , further comprising:
at least one second shielding electrode arranged on a same layer as the semiconductor pattern and apart from the semiconductor pattern;
at least one second voltage line configured to transmit a second initialization voltage; and
at least one second contact plug connecting the at least one second shielding electrode to the at least one second voltage line.

14. The display apparatus of claim 13 , wherein:
the at least one first shielding electrode and the at least one second shielding electrode are provided in plurality; and
the plurality of first shielding electrodes and the plurality of second shielding electrodes are alternately arranged with each other in the row direction.

15. The display apparatus of claim 12 , further comprising:
a plurality of power lines configured to transmit a driving voltage to the semiconductor pattern and arranged to be apart from each other in the row direction; and
a plurality of connection electrodes connecting power lines adjacent to each other in the row direction from among the plurality of power lines with each other, respectively.

16. The display apparatus of claim 15 , further comprising an insulating layer arranged between the semiconductor pattern and the plurality of power lines,
wherein each of the plurality of power lines has an opening exposing at least a portion of the insulating layer.

17. The display apparatus of claim 12 , further comprising at least one third shielding electrode, which extends from the semiconductor pattern, and to which a driving voltage is applied,
wherein the at least one first shielding electrode and the at least one third shielding electrode are adjacent to each other in a column direction.

18. The display apparatus of claim 12 , further comprising: a plurality of pixels arranged in the row direction; and a plurality of second voltage lines configured to transmit a second initialization voltage, wherein: the at least one first voltage line is provided in plurality, a pixel in a 2j−1 th column and a pixel in a 2j th column from among the plurality of pixels share a plurality of first contact plugs connecting the pixel in the 2j−1 th column and the pixel in the 2j th column to the plurality of first voltage lines; the pixel in the 2j th column and a pixel in a 2j+1 th column from among the plurality of pixels share a plurality of second contact plugs connecting the pixel in the 2j th column and the pixel in the 2j+1 th column to the plurality of second voltage lines; and the semiconductor pattern includes a plurality of pixel areas included in the plurality of pixels, respectively, a plurality of first contact areas corresponding to the plurality of first contact plugs, respectively, and a plurality of second contact areas corresponding to the plurality of second contact plugs, respectively (where j is a natural number).

19. The display appa

Assignees

• Samsung Display Co Ltd

Inventors

• Park Hyungjun
• An Junyong
• Um Nuree

Classifications

• H10K59/131 Primary

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

• G09G3/3233

  with pixel circuitry controlling the current through the light-emitting element · CPC title

• G09G2300/0426

  Layout of electrodes and connections · CPC title

• G09G2300/0819

  used for counteracting undesired variations, e.g. feedback or autozeroing · CPC title

• G09G2300/0842

  forming a memory circuit, e.g. a dynamic memory with one capacitor · CPC title