Display apparatus with a shielding layer between adjacent data lines

Patent metadata

Field	Value
Publication number	US-11380750-B2
Application number	US-201916518010-A
Country	US
Kind code	B2
Filing date	Jul 22, 2019
Priority date	Oct 31, 2018
Publication date	Jul 5, 2022
Grant date	Jul 5, 2022

Abstract

A display apparatus includes a substrate, a first pixel positioned on the substrate, a first data line which applies a first data signal to the first pixel, a second pixel positioned on the substrate and being adjacent to the first pixel, a second data line which applies a second data signal to the second pixel, and a shielding layer between the first data line and the second data line. The first data line and the second data line are parallel to each other and are disposed at different heights, and the shielding layer includes a metallic layer.

First claim

What is claimed is:

1. A display apparatus comprising:
a substrate;
a first pixel positioned on the substrate;
a first data line which applies a first data signal to the first pixel;
a second pixel positioned on the substrate and being adjacent to the first pixel;
a second data line which applies a second data signal to the second pixel; and
a shielding layer between the first data line and the second data line, the shielding layer including a metallic layer,
wherein the first data line and the second data line are parallel to each other and one of the first data line and the second data line is disposed above the shielding layer and the other of the first data line and the second data line is disposed below the shielding layer.

2. The display apparatus of claim 1 , wherein the shielding layer further comprises a metallic oxide layer on the metallic layer.

3. The display apparatus of claim 2 , wherein a metallic oxide in the metallic oxide layer is an oxide of metal in the metallic layer.

4. The display apparatus of claim 2 , wherein a concentration of oxygen in the metallic oxide layer is gradually increased from a lower portion to an upper portion of the metallic oxide layer.

5. The display apparatus of claim 1 , further comprising, between the first data line and the second date line, a first insulating layer and a second insulating layer, which are positioned at a lower portion and an upper portion of the shielding layer, respectively.

6. The display apparatus of claim 5 , wherein each of the first pixel and the second pixel comprises an organic light-emitting diode (OLED) and a pixel electrode and a circuit unit for driving the OLED, and
the circuit unit comprises a thin-film transistor (TFT) including a drain electrode electrically connected to the pixel electrode,
the first data line is on a same layer as the drain electrode, and
an organic insulating layer is positioned between the second data line and the pixel electrode.

7. The display apparatus of claim 6 , wherein the pixel electrode is electrically connected to the drain electrode via a contact hole in the organic insulating layer, the second insulating layer, the shielding layer, and the first insulating layer, and the second insulating layer covers side surfaces of the shielding layer and the first insulating layer at an inner side surface of the contact hole.

8. The display apparatus of claim 1 , wherein the shielding layer is positioned as one body commonly to correspond to the first pixel and the second pixel.

9. The display apparatus of claim 1 , wherein the shielding layer is in a floating state.

10. The display apparatus of claim 1 , wherein a width of the second data line positioned on the shielding layer is greater than a width of the first data line positioned under the shielding layer.

11. A display apparatus comprising:
a pixel unit comprising a plurality of pixels and a plurality of data lines which applies a data signal to the plurality of pixels and is arranged to be parallel to each other;
a data driving unit which generates the data signal and is connected to the plurality of data lines; and
a shielding layer which blocks signal interference between two adjacent data lines among the plurality of data lines, is positioned between the two adjacent data lines, and is positioned as one body commonly to correspond to the plurality of pixels,
wherein one of the two adjacent data lines is disposed above the shielding layer and the other of the two data lines is disposed below the shielding layer.

12. The display apparatus of claim 11 , wherein the shielding layer comprises a metallic layer and a metallic oxide layer on the metallic layer.

13. The display apparatus of claim 12 , wherein a metallic oxide in the metallic oxide layer is an oxide of metal in the metallic layer.

14. The display apparatus of claim 12 , wherein a concentration of oxygen in the metallic oxide layer is gradually increased from a lower portion to an upper portion of the metallic oxide layer.

15. The display apparatus of claim 11 , wherein the shielding layer is in a floating state.

16. The display apparatus of claim 11 , wherein first data lines among the plurality of data lines positioned at the lower portion of the shielding layer, and second data lines among the plurality of data lines positioned at the upper portion of the shielding layer, are alternately arranged in a first direction.

17. The display apparatus of claim 16 , further comprising, between the first data lines and the second data lines, a first insulating layer and a second insulating layer, which are positioned at the lower portion and the upper portion of the shielding layer, respectively.

18. The display apparatus of claim 17 , wherein each of the plurality of pixels comprises an organic light-emitting diode (OLED) and a pixel electrode and a circuit unit for driving the OLED, and
the circuit unit comprises a thin-film transistor (TFT) including a drain electrode electrically connected to the pixel electrode, and
the first data lines are positioned on a same layer as the drain electrode, and
an organic insulating layer is positioned on the second data lines, and
the pixel electrode is positioned on the organic insulating layer.

19. The display apparatus of claim 18 , wherein the pixel electrode is electrically connected to the drain electrode via a contact hole in the organic insulating layer, the second insulating layer, the shielding layer, and the first insulating layer, and the second insulating layer covers side surfaces of the shielding layer and the first insulating layer at an inner side surface of the contact hole.

20. The display apparatus of claim 16 , wherein widths of the second data lines are greater than widths of the first data lines.

Assignees

• Samsung Display Co Ltd

Inventors

• Seo Woori
• Bae Injun

Classifications

• G09G2330/06

  Handling electromagnetic interferences [EMI], covering emitted as well as received electromagnetic radiation · CPC title

• G09G3/3225 Primary

  using an active matrix · CPC title

• G09G3/3275

  Details of drivers for data electrodes · CPC title

• G09G2320/0209

  Crosstalk reduction, i.e. to reduce direct or indirect influences of signals directed to a certain pixel of the displayed image on other pixels of said image, inclusive of influences affecting pixels in different frames or fields or sub-images which constitute a same image, e.g. left and right images of a stereoscopic display · CPC title

• G09G2300/0426

  Layout of electrodes and connections · CPC title