Altering surfaces of display screens

• US 8,154,691 B2
• Filed: 03/11/2008
• Issued: 04/10/2012
• Est. Priority Date: 11/17/2000
• Status: Expired due to Term

• Current Assignee: Aptiv Technologies AG (Aptiv PLC)
• Original Assignee: Pure Depth Limited
• Inventors: Searle, Mark John
• Primary Examiner(s): RUDE, TIMOTHY L
• Application Number:
  US12/046,265
• Publication Number:
  US 20080152842A1
• Time in Patent Office: 1,491 Days
• Field of Search: None
• US Class Current: 349/112
• CPC Class Codes: C09K 2323/03 Viewing layer characterised by chemical composition
• CPC Class Codes: G02B 1/10 Optical coatings produced by application to, or surface treatment of, optical elements G02B1/08 takes precedence
• CPC Class Codes: G02F 1/133502 Antiglare, refractive index matching layers
• CPC Class Codes: G02F 1/133528 Polarisers
• CPC Class Codes: G02F 1/13363 Birefringent elements, e.g. for optical compensation
• CPC Class Codes: Y10T 156/10 Methods of surface bonding and/or assembly therefor

Abstract

A matte surface of a display screen is converted to an optically flat surface, for example, via an epoxy resin coating or the like which has a refractive index equal to that of the matte surface. A film with a substantially flat surface may be applied to the matte surface. Alternatively, the matte surface may be removed from the screen, and replaced with an optically smooth surface. The matte surface may be a diffusive surface formed on a birefringent film of an LCD screen. The display screen is the front screen of a multilevel three-dimensional display comprising layered screens, and altering the surface from matte to flat reduces the blurring of displayed images.

Claims

1. A method of altering a matte surface, said method comprising:

removing a first component of a display device, wherein said first component comprises said matte surface, wherein said display device comprises a first display screen and a second display screen, wherein said first and second display screens overlap, wherein said first display screen is operable to display a first image using a first plurality of pixels, wherein said second display screen is operable to display a second image using a second plurality of pixels; and

replacing said first component with a second component comprising a smooth surface.

2. The method of claim 1, wherein said second component comprises a polarizing film.

3. The method of claim 2, wherein said polarizing film comprises a polarizer encapsulated within a protective laminate.

4. The method of claim 1, wherein a blurriness of said first image viewed through said second component is less than a blurriness of said first image viewed through said first component.

5. The method of claim 1, wherein said removing further comprises removing said first display screen, and wherein said replacing further comprises replacing said first display screen with a third display screen comprising said second component.

6. The method of claim 1, wherein said first display screen comprises a liquid crystal display.

7. The method of claim 1, wherein said second display screen comprises a liquid crystal display.