Method of manufacturing a curved display

• US 20060098153A1
• Filed: 10/29/2003
• Published: 05/11/2006
• Est. Priority Date: 11/22/2002
• Status: Abandoned Application

• Current Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Original Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Inventors: Cirkel, Peter Albert, Bouten, Petrus Cornelis Paulus, Slikkerveer, Peter J
• Application Number:
  US10/535,753
• Publication Number:
  US 20060098153A1
• Time in Patent Office: Days
• US Class Current: 349/187
• CPC Class Codes: G02F 1/133305 Flexible substrates, e.g. plastics, organic film
• CPC Class Codes: Y10T 156/1002 with permanent bending or reshaping or surface deformation of self sustaining lamina
• CPC Class Codes: Y10T 156/1028 by bending, drawing or stretch forming sheet to assume shape of configured lamina while in contact therewith

Abstract

This invention relates to a method of manufacturing a curved flat panel display device, comprising the step of adhering, at least a first film (1, 11) to the surface of a second film (2, 12), in such a way that the films (1, 11; 2, 12) are held in a curved shape by means of the adhesion between the films (1, 11; 2, 12). The invention also relates to a curved flat panel display device, comprising at least a first and a second film, characterised in that the first and second films are adhered to each other, whereby the adhesion between said films is arranged to hold the display device in a curved shape.

Claims

1. A method of manufacturing a curved flat panel display device, comprising the step of adhering, at least a first film to the surface of a second film, in such a way that the films are held in a curved shape by means of the adhesion between the films.

2. A method as in claim 1, wherein one of said films is a display layer exhibiting display functionality, and the other one of said layerfilms is an additional film.

3. A method as in claim 2, further comprising the step of pre-tensioning said additional film before it is adhered to the surface of said display layer.

4. A method as in claim 3, wherein the step of pre-tensioning said additional film comprises the step of uni-axially stretching said additional film, during the adhering process.

5. A method as claim 2, wherein the step of adhering the films to each other comprises the step of applying a bending force to one of said films, in which position the other film is bent and adhered to a surface of the bent film.

6. A method as in claim 2, wherein said additional film is arranged to be adhered to one of an intended inner or outer side of the curvature of the flat panel display.

7. A method as in claim 2, wherein said adhering of the additional film to the display film is done by means of laminating.

10. A curved display device, being manufactured in accordance with claim 1.

8. A curved flat panel display device, comprising at least a first and a second film, characterised in that the first and second films are adhered to each other, whereby the adhesion between said films is arranged to hold the display device in a curved shape.

9. A display device as in claim 8, wherein the first and second film is an additional film and a display layer, respectively.

11. A display device as in claim 9, wherein said additional film is arranged to cover essentially the entire surface of the display layer.

12. A display device as in claim 9, wherein said additional film is arranged to only partly cover parts of the surface of the display layer.

13. A display device as in claim 9, wherein said additional film is arranged essentially along an edge of the display layer surface.

14. A display device as in claim 9, wherein the additional film has a varying thickness.

15. A display device as in claim 9, wherein the thickness of said additional film is selected to shift a plane of essentially zero tensile or compressive stress of the display device upon bending of the display device to a desired plane of the display device cross section.

16. A display device as in claim 9 wherein said display device is one of an liquid crystal display device, an electrophoretic display device, an e-ink device, a polymer light emitting display device or an organic light emitting display device.

17. A display device as in claim 9 wherein said additional film further is arranged to function as at least one of polariser, a front light, a backlight, a brightness enhancing film, a reflector film, an anti-reflection film or a retardation film.