IP Library Granted Patent US 7,352,424
Granted Patent B2
US 7,352,424 · App. 10/416,885 · Granted Apr 1, 2008

Altering surface of display screen from matt to optically smooth

Assignee: Deep Video Imaging Limited
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Quick Facts
Patent No.
US 7,352,424
App. No.
10/416,885
Granted
Apr 1, 2008
Kind
B2
Abstract

A matt surface ( 7 ) of a display screen ( 2 ) is converted to a non-diffuse optically smooth surface ( 11 ). The matt surface may be a diffusive surface ( 7 ) formed on a birefringent film ( 6 ) of an LCD screen ( 2 ). The display screen ( 2 ) is the front screen of a multilevel three dimensional display comprising layered screens ( 2, 3 ). The conversion from matt to non-diffuse and optically smooth surface reduces the blurring of displayed images.

Claims (12)

1. A method of altering a surface of a multi focal-plane display said method comprising:

removing an existing material comprising a matte surface from said multi focal-plane display; and and

replacing said existing material comprising said matte surface with a material comprising a non-diffuse surface.

2. The method of claim 1 , wherein at least one display screen of said multi focal-plane display comprises an LCD.

3. The method of claim 1 , wherein said material comprising said non-diffuse surface comprises a polarizer film.

4. The method of claim 3 , wherein said polarizer film is formed from a protective transparent layer encapsulating a polarizing layer.

5. The method of claim 1 , wherein said multi focal-plane display comprises a first display screen and a second display screen, and wherein said first and second display screens overlap.

6. The method of claim 5 , wherein said material comprising said matte surface is removed from said second display screen and replaced with said material comprising said non-diffuse surface.

7. The method of claim 6 , wherein a graphical object displayed on said first display screen is viewable through said second display screen, and wherein said graphical object has greater clarity when viewed through said material comprising said non-diffuse surface than when viewed through said material comprising said matte surface.

8. The method of claim 5 , wherein said second display screen is interchangeable with a third display screen, wherein said second display screen is coupled with said material comprising said matte surface and said third display screen is coupled with said material comprising said non-diffuse surface.

9. The method of claim 8 , wherein a graphical object displayed on said first display screen is viewable through at least one of said second and third display screens, and wherein said graphical object has greater clarity when viewed through said material comprising said non-diffuse surface than when, viewed through said material comprising said matte surface.

10. The method of claim 1 , wherein said non-diffuse surface is optically smooth.

Assignments (4)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 5, 2022
From: PUREDEPTH LIMITED (ALSO REFERRED TO AS PURE DEPTH LIMITED); PUREDEPTH INC. (ALSO REFERRED TO AS PURE DEPTH)
To: APTIV TECHNOLOGIES LIMITED
Reel/Frame 059596/0413 →
SECURITY INTEREST Recorded Jun 30, 2015
From: PUREDEPTH LIMITED
To: K ONE W ONE LIMITED
Reel/Frame 035997/0146 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 15, 2005
From: DEEP VIDEO IMAGING LIMITED
To: PURE DEPTH LIMITED
Reel/Frame 016401/0909 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 20, 2003
From: SEARLE, MARK JOHN
To: DEEP VIDEO IMAGING LTD.
Reel/Frame 014778/0298 →
Priority Claims (2)
NZ 508258 · Nov 17, 2000 · national
NZ 508826 · Dec 12, 2000 · national
Continuity (1)
Related Publication 20040066475A1 · Apr 8, 2004