HIGH DYNAMIC RANGE DISPLAYS COMPRISING MEMS/IMOD COMPONENTS

• US 20130063496A1
• Filed: 07/12/2012
• Published: 03/14/2013
• Est. Priority Date: 09/09/2011
• Status: Active Grant

• Current Assignee: Dolby Laboratories Licensing Corporation (Dolby Laboratories Incorporated)
• Original Assignee: Dolby Laboratories Licensing Corporation (Dolby Laboratories Incorporated)
• Inventors: Basler, Brad, Erinjippurath, Gopal
• Granted Patent: US 9,324,250 B2
• Time in Patent Office: Days
• US Class Current: 345/690
• CPC Class Codes: G09G 2300/023 Display panel composed of stacked panels
• CPC Class Codes: G09G 2310/0235 Field-sequential colour display
• CPC Class Codes: G09G 2320/0242 Compensation of deficiencies in the appearance of colours
• CPC Class Codes: G09G 2320/0247 Flicker reduction other than flicker reduction circuits used for single beam cathode-ray tubes
• 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 3/003 to produce spatial visual effects
• CPC Class Codes: G09G 3/3413 Details of control of colour illumination sources
• CPC Class Codes: G09G 3/3466 based on interferometric effect
• CPC Class Codes: G09G 3/3611 Control of matrices with row and column drivers
• CPC Class Codes: H04N 13/305 using lenticular lenses, e.g. arrangements of cylindrical lenses
• CPC Class Codes: H04N 13/334 using spectral multiplexing
• CPC Class Codes: H04N 13/341 using temporal multiplexing

Abstract

Several embodiments of display systems are disclosed that comprise a backlight source, a first modulator, a second modulator and a controller. The backlight source may further comprise an edge-lit backlighting source that may be controlled to affect a field-sequential illumination for the dual or multiple modulator display system. In another embodiment, the display system may comprise two or more color primary emitters that each comprise a color gamut. When the color gamuts are driven in a field sequential pattern, the resulting overall gamut is substantially wider. Other display systems and methods are disclosed herein that affect a variety of 3D viewing embodiments. Systems, methods and techniques to increase the dynamic range, color gamut and bit precision of display systems comprising MEMS and/or IMODs are presented.

Claims

1. A display system comprising:

a backlight source, said backlight source providing light into an optical path;

a MEMS/IMOD modulator, receiving light from said backlight source and modulating said light on said optical path;

a second modulator, receiving light from said MEMS/IMOD modulator and transmitting said light;

a controller, said controller inputting image data to be rendered upon said display system and sending signals to said MEMS/IMOD modulator and said second modulator.

2. The display system as recited in claim 1 wherein said second modulator comprises one of a group, said group comprising a monochrome LCD display, a colored LCD display and a MEMS/IMOD modulator.

3. The display system as recited in claim 1 wherein said MEMS/IMOD modulator comprises one of a group, said group comprising:

a MEMS/IMOD reflector modulator, a MEMS/IMOD transmissive modulator and a MEMS/IMOD transflective modulator.

4. The display system as recited in claim 3 wherein both said first modulator and said second modulator comprise monochrome LCD displays, said monochrome LCDs displays further comprising monochrome subpixels.

5. The display system as recited in claim 1 wherein said backlight source further comprises an edge-lit backlight and said MEMS/IMOD modulator further comprises one of a group, said group comprising:

a MEMS/IMOD reflective modulator and a MEMS/IMOD transflective modulator.

6. The display system as recited in claim 5 wherein said edge-lit backlight comprises one of a group, said group comprising:

white LEDs, white CCFL, white OLEDs, white quantum dot enhancement film, colored LEDs, colored OLEDs.

7. The display system as recited in claim 1 wherein said backlight source further comprises an backlit backlight and said MEMS/IMOD modulator further comprises one of a group, said group comprising:

a MEMS/IMOD transmissive modulator and a MEMS/IMOD transflective modulator.

8. The display system as recited in claim 5 wherein said edge-lit backlight comprises one of a group, said group comprising:

white LEDs, white CCFL, white OLEDs, white quantum dot array, colored LEDs, colored OLEDs.

9. The display as recited in claim 1 wherein said MEMS/IMOD modulator further comprises a partitioned backplane wherein said partitioned backplane comprising a plurality of MEMS/IMOD modulators having different spectral characteristics.

10. The display as recited in claim 9 wherein said partitioned backplane comprises one of a group, said group comprising:

stripes, checkerboard pattern, PenTile pattern.

11. The display as recited in claim 10 wherein said partitioned backplane further comprises n x n pixels wherein each said pixel further comprises etalon-based bichromic cells.

12. The display as recited in claim 11 wherein said bichromic cells are substantially in alignment with one of more LCD subpixels.

13. The display as recited in claim 9 wherein said plurality of MEMS/IMOD modulators having different spectral characteristics further comprising at least two subsets of MEMS/IMOD modulators, each said subset capable of producing a white light.

14. The display as recited in claim 13 wherein said controller is capable of sending signals to said at least two subsets of MEMS/IMOD modulator to affect a field sequential display.

15. A display system comprising:

a backlight source, said backlight source providing light into an optical path;

a backplane, said backplane comprising a partition into at least two subsets, each subset comprising MEMS/IMOD modulators, said backplane receiving light from said backlight source and modulating said light on said optical path;

a second modulator, receiving light from said backplane and transmitting said light;

a controller, said controller inputting image data to be rendered upon said display system and sending signals to said backplane and said second modulator.

16. The display as recited in claim 15 wherein each at least two subsets comprises a first subset of MEMS/IMOD modulators and a second subset of MEMS/IMOD modulators such that said first subset is capable of producing a first gamut and said second subset is capable of producing a second gamut.

17. The display as recited in claim 16 wherein said first gamut and said second gamut comprise a white point.

18. The display as recited in claim 17 wherein said display system is capable of switching between said first gamut and said second gamut to affect field sequential displays of input images.