Display apparatus and method of manufacturing the same

Patent metadata

Field	Value
Publication number	US-10914992-B2
Application number	US-202016892544-A
Country	US
Kind code	B2
Filing date	Jun 4, 2020
Priority date	Dec 16, 2016
Publication date	Feb 9, 2021
Grant date	Feb 9, 2021

Abstract

A display apparatus includes a display panel including a lower base substrate and a connecting portion disposed on the lower base substrate, a flexible circuit board attached on a side surface of the display panel, and including a base film and a conductive pattern disposed on the base film, a conductive paste part disposed between the side surface of the display panel and the flexible circuit board, a first anisotropic conductive film (ACF) film disposed between the side surface of the display panel and the conductive paste part, and a second ACF film disposed between the conductive paste part and the flexible circuit board. The connecting portion is exposed at the side surface of the display panel, and the first ACF film directly makes contact with the connecting portion.

First claim

What is claimed is:

1. A display apparatus, comprising:
a display panel comprising a lower base substrate, a connecting portion disposed on the lower base substrate and a cover layer disposed on the lower base substrate;
a flexible circuit board attached on a side surface of the display panel, wherein the flexible circuit board further comprises a base film and a conductive pattern disposed on the base film;
a conductive paste part disposed between the side surface of the display panel and the flexible circuit board;
a first anisotropic conductive film disposed between the side surface of the display panel and the conductive paste part; and
a second anisotropic conductive film disposed between the conductive paste part and the flexible circuit board,
wherein the first anisotropic conductive film makes contact with the connecting portion, the lower base substrate and the cover layer at the side surface of the display panel.

2. The display apparatus of claim 1 , wherein the first anisotropic conductive film is a non-random array anisotropic conductive film.

3. The display apparatus of claim 2 , wherein the first anisotropic conductive film further comprises a resin film and a plurality of conductive balls, wherein the plurality of conductive balls are arranged in a matrix form in one layer in the resin film.

4. The display apparatus of claim 3 , wherein a thickness of the resin film is equal to or smaller than a diameter of one of the plurality of conductive balls.

5. The display apparatus of claim 4 , wherein the display panel displays an image on a plane extending in a first direction and a second direction, wherein the second direction is an extension direction of the side surface of the display panel, and the second direction is perpendicular to the first direction, and
the plurality of conductive balls are arranged in the matrix form in a plane formed by the second direction and a third direction, wherein the third direction is perpendicular to the second direction and is a thickness direction of the display panel.

6. The display apparatus of claim 5 , wherein the plurality of conductive balls are arranged in the matrix form in a plane formed by the second direction and an inclined direction, wherein the inclined direction is inclined with respect to the third direction by a predetermined angle.

7. The display apparatus of claim 1 , wherein the connecting portion further comprises a plurality of connecting lines,
the plurality of connecting lines are spaced apart from each other in an extending direction of the side surface of the display panel, and
an end of the plurality of connecting line makes contact with the first anisotropic conductive film at the side surface of the display panel.

8. The display apparatus of claim 7 , wherein the conductive paste part further comprises a plurality of conductive paste lines corresponding to each of the plurality of connecting lines, the plurality of conductive paste lines spaced apart from each other in an extension direction of the side surface of the display panel, and
the conductive pattern is formed corresponding to the plurality of conductive paste lines.

9. The display apparatus of claim 1 , wherein the flexible circuit board further comprises a driving circuit, wherein the driving circuit is mounted on the base film and electrically connected to the conductive pattern, and
a signal generated from the driving circuit is provided to the display panel through the conductive pattern, the second anisotropic conductive film, the conductive paste part, the first anisotropic conductive film, and the connecting portion.

10. The display apparatus of claim 1 , wherein the first anisotropic conductive film, the conductive paste part, the second anisotropic conductive film, and the flexible circuit board are bent and attached on the cover layer.

11. A display apparatus, comprising:
a display panel comprising a lower base substrate, a connecting portion disposed on the lower base substrate, an upper base substrate facing the lower base substrate and a sealing member disposed between the upper base substrate and the lower base substrate;
a flexible circuit board attached on a side surface of the display panel, wherein the flexible circuit board further comprises a base film and a conductive pattern disposed on the base film;
a conductive paste part disposed between the side surface of the display panel and the flexible circuit board;
a first anisotropic conductive film disposed between the side surface of the display panel and the conductive paste part; and
a second anisotropic conductive film disposed between the conductive paste part and the flexible circuit board,
wherein the first anisotropic conductive film makes contact with the connecting portion, the lower base substrate, the sealing member and the upper base substrate at the side surface of the display panel.

12. The display apparatus of claim 11 , wherein the first anisotropic conductive film is a non-random array anisotropic conductive film.

13. The display apparatus of claim 12 , wherein the first anisotropic conductive film further comprises a resin film and a plurality of conductive balls, wherein the plurality of conductive balls are arranged in a matrix form in one layer in the resin film.

14. The display apparatus of claim 13 , wherein a thickness of the resin film is equal to or smaller than a diameter of one of the plurality of conductive balls.

15. The display apparatus of claim 14 , wherein the display panel displays an image on a plane extending in a first direction and a second direction, wherein the second direction is an extension direction of the side surface of the display panel, and the second direction is perpendicular to the first direction, and
the plurality of conductive balls are arranged in the matrix form in a plane formed by the second direction and a third direction, wherein the third direction is perpendicular to the second direction and is a thickness direction of the display panel.

16. The display apparatus of claim 15 , wherein the plurality of conductive balls are arranged in the matrix form in a plane formed by the second direction and an inclined direction, wherein the inclined direction is inclined with respect to the third direction by a predetermined angle.

17. The display apparatus of claim 11 , wherein the second anisotropic conductive film is an anisotropic conductive film, wherein the second anisotropic conductive film further comprises a plurality of conductive balls and a resin film, the plurality of conductive balls are randomly arranged in the resin film.

18. The display apparatus of claim 11 , wherein the connecting portion further comprises a plurality of connecting lines,
the plurality of connecting lines are spaced apart from each other in an extending direction of the side surface of the display panel, and
an end of the plurality of connecting line makes contact with the first anisotropic conductive film at the side surface of the display panel.

19. The display apparatus of claim 18 , wherein the conductive paste part further comprises a plurality of conductive paste lines corresponding to each of the plurality of connecting lines, the plurality of conductive paste lines spaced apart from each other in an extension direction of the side surface of the display panel, and
the conductive pattern is formed corresponding to the plurality of conductive paste lines.

20. The display apparatus of claim 11 , wherein the flexible circuit board further comprises

Assignees

• Samsung Display Co Ltd

Inventors

• Kim Minseok
• Kim Jonghwan
• Cho Youngmin

Classifications

• H10W72/07338

  hardening the adhesive by curing, e.g. thermosetting · CPC title

• H10W72/07339

  hardening the adhesive by cooling, e.g. thermoplastics · CPC title

• H10W72/074

  of anisotropic conductive adhesives · CPC title

• H10W72/07336

  Soldering or alloying · CPC title

• H10W72/073

  of die-attach connectors · CPC title