Display device and method for manufacturing the same

Patent metadata

Field	Value
Publication number	US-10747073-B2
Application number	US-201715607856-A
Country	US
Kind code	B2
Filing date	May 30, 2017
Priority date	Jun 8, 2016
Publication date	Aug 18, 2020
Grant date	Aug 18, 2020

Abstract

A display device includes a display panel, a flexible film, and a conductive adhesion member. The display panel includes a first substrate which includes a pad electrode connected to a signal line, a second substrate, and a metal electrode electrically connected to the pad electrode and on a side surface of the display panel. The flexible film includes a line electrode electrically connected to the metal electrode and attached to the side surface of the display panel. The conductive adhesion member includes a connection electrode electrically connecting the metal electrode to the line electrode. The conductive adhesion member attaches the flexible film to the surface of the display panel. The connection electrode includes the solder particles in melted form.

First claim

What is claimed is:

1. A display device, comprising:
a display panel including a first substrate which includes a signal line, a pad electrode connected to the signal line, and a second substrate facing the first substrate;
a metal electrode electrically connected to the pad electrode, the metal electrode being on a side surface of the display panel;
a flexible film including a line electrode electrically connected to the metal electrode, the flexible film being attached to the side surface of the display panel;
a connection electrode directly contacting and electrically connecting the metal electrode to the line electrode, wherein the connection electrode includes solder particles in melted form; and
an adhesion layer having adhesion property and being disposed between the flexible film and the side surface of the display panel, wherein:
the first substrate includes an insulation layer on the signal line and the pad electrode,
the insulation layer includes an opening pattern overlapping and exposing a top surface of an end of the pad electrode,
the metal electrode is disposed in the opening pattern and contacts the top surface of the end of the pad electrode,
the connection electrode is disposed on the side surface of the display panel and is apart from the pad electrode in a plan view,
each of the metal electrode and the line electrode is not overlapped with a side surface of the second substrate along a direction perpendicular to the side surface of the second substrate, and
the adhesion layer is extended to the side surface of the second substrate and disposed between the side surface of the second substrate and the flexible film.

2. The display device as claimed in claim 1 , wherein the metal electrode includes a metallic material including silver or carbon.

3. The display device as claimed in claim 1 , wherein the solder particles include at least one of a tin-silver alloy, a tin-copper alloy, a tin-silver-copper alloy, a tin-bismuth alloy that consists entirely of tin and bismuth, a tin-zinc alloy, a tin-lead alloy, a tin-lead-silver alloy, a tin-bismuth-silver alloy, or a tin-indium alloy.

4. The display device as claimed in claim 3 , wherein:
the solder particles include the tin-bismuth alloy,
the tin is in a weight percentage ranging from about 37 wt % to about 47 wt % with respect to a total weight of the solder particles,
the bismuth is in a weight percentage ranging from about 53 wt % to about 63 wt % with respect to the total weight of the solder particles, and
a combined weight percentage of the tin and the bismuth in the tin-bismuth alloy being 100% with respect to the total weight of the solder particles.

5. The display device as claimed in claim 1 , wherein:
the first substrate includes a first base substrate having a first surface opposite to a second surface and side surfaces connecting the first and second surfaces,
the signal line and the pad electrode are on one of the first surface and the second surface, and
the metal electrode directly contacts the pad electrode.

6. The display device as claimed in claim 1 , wherein the flexible film includes:
a base film on which the line electrode is disposed; and
a cover film covering the line electrode.

7. The display device as claimed in claim 6 , wherein:
the base film includes a first section corresponding to a side surface of the first substrate and a second section corresponding to a side surface of the second substrate and outside the first section, and
the line electrode is in the first section and does not extend to the second section.

8. The display device as claimed in claim 7 , wherein:
the adhesion layer attaches the base film to the side surface of the display panel,
the connection electrode is disposed corresponding to the first section of the base film, and
the adhesion layer is disposed corresponding to the first and second sections of the base film.

9. The display device as claimed in claim 1 , wherein the second substrate further includes:
a second base substrate;
a common electrode on the second base substrate; and
an insulation structure on the common electrode and adjacent to the metal electrode to extend along the side surface of the display panel.

10. The display device as claimed in claim 1 , wherein:
the second substrate includes a second base substrate and a common electrode on the second base substrate, and
the common electrode does not overlap the metal electrode between the first and second substrates.

11. The display device as claimed in claim 1 , wherein the metal electrode, the opening pattern, and the pad electrode are provided as a plurality of metal electrodes and opening patterns arrayed in a direction, top surfaces of the plurality of pad electrodes being respectively overlapped with the plurality of the opening patterns, and the plurality of the metal electrodes respectively contacting the top surfaces of the pad electrodes.

12. The display device as claimed in claim 1 , wherein the metal electrode fills the opening pattern, the metal electrode being formed from a conductive paste injected into the opening pattern.

Assignees

• Samsung Display Co Ltd

Inventors

• Cho Youngmin
• Kim Minseok
• Kim Jonghwan
• Cho Yongyoul

Classifications

• H01B1/22

  the conductive material comprising metals or alloys · CPC title

• G02F1/1345 Primary

  Conductors connecting electrodes to cell terminals · CPC title

• H01B1/02

  mainly consisting of metals or alloys · CPC title

• G02F1/136295

  Materials; Compositions; Manufacture processes · CPC title

• G09F9/00

  Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements (in which the variable information is permanently attached to a movable support G09F11/00; abacus G06C1/00; slide-rules G06G1/00) · CPC title