Display Utilizing Simultaneous Color Intelligent Backlighting and luminescence Controlling Shutters

• US 20090251401A1
• Filed: 09/14/2007
• Published: 10/08/2009
• Est. Priority Date: 09/15/2006
• Status: Abandoned Application

• Current Assignee: Istvan Gorog
• Original Assignee: Thomson Licensing (Vantiva SA)
• Inventors: Gorog, Istvan
• Application Number:
  US12/083,444
• Publication Number:
  US 20090251401A1
• Time in Patent Office: Days
• US Class Current: 345/102
• CPC Class Codes: G09G 2320/0646 Modulation of illumination source brightness and image signal correlated to each other
• CPC Class Codes: G09G 2360/16 Calculation or use of calculated indices related to luminance levels in display data
• CPC Class Codes: G09G 3/3426 the different display panel areas being distributed in two dimensions, e.g. matrix

Abstract

A display comprises a front-end component having a matrix of neutral light valves that defines the resolution of the display. A backlight unit provides backlighting for the front-end component and has a plurality of individual elements grouped into repeat units, wherein the individual elements in the repeat units differ in color and the repeat units have a resolution less than the display resolution. All individual elements in individual repeat units are capable of simultaneously emitting light incident on more than one neutral light valve.

Claims

1. A display comprising:

a front-end component having a matrix of light valves, the matrix defining a display resolution; and

a backlight unit having a plurality of non-sequentially emitting separate color elements grouped into repeat units, the repeat units having a resolution less than the display resolution.

2. The display of claim 1, wherein the plurality of emitting separate color elements simultaneously emit light.

3. The display of claim 2, wherein the light valves control luminance.

4. The display of claim 3, wherein the light Valves are programmable.

5. The display of claim 4, wherein the backlight is a tricolor system.

6. The display of claim 5, wherein the backlight uses phosphor material which decay in a timeframe shorter than a frame period.

7. The display of claim 6, wherein the backlight is a field emission device.

8. The display of claim 7, wherein the front-end component is a liquid crystal device using neutral light valves.

9. The display of claim 2, wherein the backlight is a programmable field emission device and front-end component is a liquid crystal device using neutral light valves.

10. A method for displaying video images, comprising the steps of:

modulating a plurality of light transmission paths arranged in a first array responsive to luminance information;

emitting a plurality of colored light beams arranged in a second array responsive to color content information;

emitting a smaller number of said colored light beams than said plurality of said light transmission paths; and

,

non-sequentially illuminating said first array of said modulated light transmission paths with said second array of said colored light-beams during a frame of said video images.

11. The method of claim 10, wherein in the non-sequentially illuminating step, said first array is simultaneously illuminated.

12. The method of claim 11, comprising the step of reducing said color content information in resolution prior to said emitting steps.

13. The method of claim 11, comprising the step of providing said luminance information at a higher level of resolution, and providing said color content information at a lower level of resolution, relative to one another.

14. The method of claim 11, comprising the step of illuminating a given number of said modulated light transmission paths with fewer than said given number of said colored light beams.