Device comprising a multilayer structure and rollers

• US 10,281,794 B2
• Filed: 05/22/2017
• Issued: 05/07/2019
• Est. Priority Date: 04/16/2007
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Van Lieshout, Petrus Johannes Gerardus, Van Veenendaal, Erik, Kleijne, Elgar Denys, Verschoor, Volker Barnhart
• Primary Examiner(s): Tra, Tuyen
• Application Number:
  US15/601,405
• Publication Number:
  US 20170269452A1
• Time in Patent Office: 715 Days
• Field of Search: 359898, 359296, 345107
• CPC Class Codes: G02F 1/133305 Flexible substrates, e.g. plastics, organic film
• CPC Class Codes: G02F 1/167 by electrophoresis
• CPC Class Codes: G02F 1/16753 Structures for supporting or mounting cells, e.g. frames or bezels
• CPC Class Codes: G09F 11/29 of a band other than endless
• CPC Class Codes: G09F 9/372 the positions of the elements being controlled by the application of an electric field
• CPC Class Codes: Y10T 428/31504 Composite [nonstructural laminate]

Abstract

The invention relates to a device comprising a multilayered structure with a first portion and a second portion wherein the first portion is conceived to be rolled about a first roller, said device comprising a second roller for receiving the second portion for at least partially counteracting the effects of mechanical strain induced in the multilayered structure upon said rolling. The first roller is rotated in a first direction, whereby the second roller is rotated in a second direction. Preferably, the diameters of the first roller and the second roller are equal. Alternatively, the edge portions A, B of the multilayer structure are suitably interconnected by stoppers for preventing creeping.

Claims

1. An electronic device comprising:

a multilayered structure;

a first roller; and

a second roller,

wherein in response to each side of the multilayered structure being wound about the first and second rollers, a first creep area is formed at a first area of the multilayered structure and a second creep area is formed at a second area of the multilayered structure, respectively, and

wherein the first creep area and the second creep area are configured to offset creep which is formed while the multilayered structure is wound about the first and second rollers.

2. The device according to claim 1, wherein the first roller and the second roller are rotatable in an opposite direction or in a same direction.

3. The device according to claim 1, wherein the multilayered structure comprises a first layer and a second layer.

4. The device according to claim 3, wherein the first layer and the second layer are mechanically interconnected in at least one edge of the multilayered structure.

5. The device according to claim 4,

wherein the multilayered structure comprises a first portion and a second portion, and

wherein the first portion is wound about the first roller, and the second portion is wound about the second roller.

6. The device according to claim 5,

wherein the first portion comprises a first edge, and the second portion comprises a second edge, and

wherein the first and second layers are mechanically interconnected in at least one of the first edge and the second edge.

7. The device according to claim 3, wherein the first layer is a flexible display.

8. The device according to claim 7, wherein the second layer is a compliant middle layer.

9. The device according to claim 7, wherein the flexible display comprises a plurality of rows, each row being oriented in a roll up direction which is transverse to a longitudinal axis of a spool or roll.

10. The device according to claim 9, wherein the flexible display comprises electrophoretic material.

11. The device according to claim 1, wherein a diameter of the first roller substantially equals a diameter of the second roller.

12. The device according to claim 1,

wherein the device is accommodated in a housing, the housing comprising a first housing portion and a second housing portion, the first housing portion being displaceably arranged with respect to the second housing portion, and

wherein the first roller is arranged in the first housing portion, and the second roller is arranged in the second housing portion.