Laminating roller, laminating device and method for laminating display apparatus

Patent metadata

Field	Value
Publication number	US-12343971-B2
Application number	US-202318451297-A
Country	US
Kind code	B2
Filing date	Aug 17, 2023
Priority date	Sep 28, 2018
Publication date	Jul 1, 2025
Grant date	Jul 1, 2025

Abstract

A laminating roller, a laminating device, and a method for laminating a display apparatus are provided. A laminating device includes a stage on which a display module including a folding area foldable about a folding axis and at least one non-folding area, which is not folded, is configured to be seated; a pressing part over the stage to overlap the non-folding area and having a diameter; and a connection part over the stage to overlap the folding area and connected to the pressing part, and the connection part has a diameter less than that of the pressing part and extends in a direction perpendicular to the folding axis.

First claim

What is claimed is:

1. A method for laminating a display apparatus, the method comprising:
seating a plurality of plates on a seating area defined on a stage;
seating a first adhesion member on the plates;
seating a display module foldable about a folding axis on the first adhesion member; and
pressing the display module to laminate the plates with the display module,
wherein the seating area comprises:
first and second areas defined on the stage to be spaced apart from each other and overlap with non-folding areas of the display module; and
a third area defined between the first and second areas on the stage to overlap with a folding area of the display module and comprising a spaced area,
wherein, in the seating of the plurality of plates, the plates are spaced apart from each other over the spaced area, and the folding axis overlaps the spaced area on a plane, and
in the laminating of the plates with the display module, a pressing force applied to the third area is less than that applied to each of the first and second areas.

2. The method of claim 1 , wherein, in the laminating of the plates with the display module, the display module is pressed by using a laminating roller, which extends in a direction perpendicular to the folding axis on the plane and rotates to move in a direction parallel to the folding axis.

3. The method of claim 2 , wherein the laminating roller comprises:
first and second pressing parts overlapping the first and second areas to press the non-folding areas of the display module; and
a connection part connecting the first and second pressing parts to each other and overlapping at least the third area to press the folding area of the display module,
wherein the connection part has a diameter less than that of each of the pressing parts.

4. The method of claim 3 , wherein the connection part comprises:
a first connection part connected to the first pressing part;
a second connection part connected to the second pressing part; and
a central part connecting the first connection part to the second connection part and pressing the folding area of the display module overlapping the spaced area,
wherein the central part has a diameter that is equal to or less than a mean diameter of each of the first connection part and the second connection part.

5. The method of claim 4 , wherein at least a portion of the laminating roller has an outer circumferential surface that has a modulus less than that of the central part.

6. The method of claim 2 , wherein the laminating roller comprises:
first and second pressing parts overlapping the first and second areas to press the non-folding areas of the display module; and
a connection part connecting the first and second pressing parts to each other and overlapping at least the third area to press the folding area of the display module,
wherein each of the first and second pressing parts has a modulus greater than that of the connection part.

7. The method of claim 1 , wherein the display module comprises a display panel comprising a plurality of display elements to display an image.

Assignees

• Samsung Display Co Ltd

Inventors

• Shin Jaiku
• Han Jiwon
• Lee Wonbaek
• Jung Seung-Ho
• Jung Taehyeog
• Choi Kyungmin

Classifications

• H10K71/00

  Manufacture or treatment specially adapted for the organic devices covered by this subclass · CPC title

• B32B2457/206

  Organic displays, e.g. OLED · CPC title

• B32B37/0053

  Constructional details of laminating machines comprising rollers; Constructional features of the rollers · CPC title

• H10K71/50

  Forming devices by joining two substrates together, e.g. lamination techniques · CPC title

• B32B3/04

  characterised by {at least one} layer folded at the edge, e.g. over another layer {; characterised by at least one layer enveloping or enclosing a material} · CPC title