Method and device for manipulating color in a display
First Claim
Patent Images
1. A display comprising:
- at least one interferometric modulator configured to selectively reflect light incident thereon, the at least one modulator having a first spectral response across substantially the visible light spectrum, the first spectral response further having a spectral peak centered in the green portion of the visible light spectrum; and
at least one filter positioned in front of the at least one interferometric modulator so as to receive the selectively reflected light from the at least one interferometric modulator and configured to selectively transmit visible wavelengths associated with magenta light, the filter having a second spectral response characterizing transmission through the filter over the visible spectrum, the second spectral response having two portions corresponding to transmission of red and blue wavelengths and a non-zero reduced portion of the spectrum therebetween,wherein a combination of the at least one interferometric modulator and the at least one filter has a third spectral response lower than the first spectral response of the at least one interferometric modulator due to the at least one filter being configured to remove at least a portion of the said light selectively reflected by the at least one interferometric modulator to output white light, andwherein the at least one interferometric modulator includes a reflective surface and a partially reflective surface defining an optical cavity, the optical cavity having an optical path length that is substantially equal to one half of a wavelength associated with green light.
3 Assignments
0 Petitions
Accused Products
Abstract
A method and device for manipulating color in a display is disclosed. In one embodiment, a display comprises interferometric display elements formed to have spectral responses that produce white light. In one embodiment, the produced white light is characterized by a standardized white point.
-
Citations
19 Claims
-
1. A display comprising:
-
at least one interferometric modulator configured to selectively reflect light incident thereon, the at least one modulator having a first spectral response across substantially the visible light spectrum, the first spectral response further having a spectral peak centered in the green portion of the visible light spectrum; and at least one filter positioned in front of the at least one interferometric modulator so as to receive the selectively reflected light from the at least one interferometric modulator and configured to selectively transmit visible wavelengths associated with magenta light, the filter having a second spectral response characterizing transmission through the filter over the visible spectrum, the second spectral response having two portions corresponding to transmission of red and blue wavelengths and a non-zero reduced portion of the spectrum therebetween, wherein a combination of the at least one interferometric modulator and the at least one filter has a third spectral response lower than the first spectral response of the at least one interferometric modulator due to the at least one filter being configured to remove at least a portion of the said light selectively reflected by the at least one interferometric modulator to output white light, and wherein the at least one interferometric modulator includes a reflective surface and a partially reflective surface defining an optical cavity, the optical cavity having an optical path length that is substantially equal to one half of a wavelength associated with green light. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A display comprising:
-
means for modulating light, the modulating means selectively reflecting light incident thereon, and having a first spectral response across substantially the visible light spectrum, the first spectral response further having a spectral peak centered in the green portion of the visible light spectrum; and means for filtering positioned in front of the means for modulating light so as to receive the selectively reflected light from the means for modulating light, the filtering means selectively transmitting visible wavelengths associated with magenta light, the filtering means having a second spectral response characterizing transmission through the filtering means over the visible spectrum, the second spectral response having two portions corresponding to transmission of red and blue wavelengths and a non-zero reduced portion of the spectrum therebetween, wherein the means for modulating includes an electromechanical system and wherein a combination of the means for modulating light and the means for filtering has a third spectral response lower than the first spectral response of the means for modulating light due to the means for filtering being configured to remove at least a portion of the light selectively reflected by the means for modulating light to output white light, and wherein the modulating means includes a reflective surface and a partially reflective surface defining an optical cavity, the optical cavity having an optical path length that is substantially equal to one half of a wavelength associated with green light. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
-
Specification