Apparatus for displaying a color image from digital data

• US 20040207820A1
• Filed: 05/06/2004
• Published: 10/21/2004
• Est. Priority Date: 10/11/2002
• Status: Active Grant

• Current Assignee: IMAX Theatres International Limited (IMAX Corporation)
• Original Assignee: James E. Roddy, Louis S Horvath, Nelson A. Blish, Robert J. Zolla
• Inventors: Zolla, Robert J., Roddy, James E., Blish, Nelson A., Horvath, Louis S.
• Granted Patent: US 6,863,402 B2
• Time in Patent Office: Days
• US Class Current: 353/94
• CPC Class Codes: G03B 21/00 Projectors or projection-type viewers; Accessories therefor devices for changing pictures G03B23/00
• CPC Class Codes: H04N 9/3158 for controlling the spectrum
• CPC Class Codes: H04N 9/3188 Scale or resolution adjustment scaling in general G06T3/40; resolution modifying circuits for displays in general G09G5/391

Abstract

A display system (10) for digital color images using six color light sources (12) or two or more multicolor LED arrays (212, 213) or OLEDs (220, 222) to provide an expanded color gamut. Apparatus (10) uses two or more spatial light modulators (20, 21), which may be cycled between two or more color light sources (12) or LED arrays (212, 213) to provide a six-color display output. Pairing of modulated colors using relative luminance helps to minimize flicker effects.

Claims

1. An apparatus for displaying a color image from digital data comprising:

(a) a first polymer light emitting diode for forming a first multicolor image beam;

(b) a second polymer light emitting diode for forming a second multicolor image beam;

(c) combining means for combining said first and second multicolor image beams to form a full multicolor image beam; and

(d) projection means for projecting said full multicolor image beam onto a display surface.

2. A method for displaying a color image from digital data comprising providing a color polymer light emitting diode capable of emitting at least five colors.

3. A method for displaying a color image from digital data comprising:

(a) providing image data for at least a first and a second color to a first polymer light emitting diode and emitting said at least said first and said second color from said first polymer light emitting diode as a first multicolor modulated beam;

(b) providing image data for at least a third and a fourth color to a second polymer light emitting diode and emitting said at least said third and said fourth color from said second polymer light emitting diode as a second multicolor modulated beam;

(c) combining said first and said second multicolor modulated beams to form a combined multicolor modulated beam; and

(d) directing said combined multicolor modulated beam to a display surface.