DEVICE AND METHOD FOR WAVELENGTH FILTERING
Embodiments include devices and methods for wavelength filtering. For example, one embodiment includes a display comprising a plurality of the display elements each comprising a movable reflector, a first partial reflector, and a second partial reflector. The first partial reflector is positioned at a first distance from the movable reflector and forms a first optical resonant cavity therebetween. The second partial reflector is positioned at a second distance from said first partial reflector and forming a second optical resonant cavity therebetween. In various embodiments, the movable reflector is movable with respect to the first partial reflector to alter the first optical cavity. Other embodiments include a method of making devices.
1 .- 39 . (canceled)
40 . A display device comprising a plurality of display elements, each of the display elements including:
a movable reflector;
a first partial reflector positioned at a first distance from the movable reflector, the movable reflector movable with respect to the first partial reflector to alter the first distance such that the movable reflector and the first partial reflector produce light with a first spectral response associated with a first color;
a second partial reflector positioned at a second fixed distance from the first partial reflector, the first partial reflector being disposed between the movable reflector and the second partial reflector; and
a dielectric layer between the first partial reflector and the second partial reflector, wherein the first partial reflector and the second partial reflector provide an interferometric filter in which the first partial reflector and the second partial reflector define an optical cavity that is configured to selectively transmit visible wavelengths associated with light having a second spectral response associated with a second color when illuminated with white light.
41 . The display device of claim 40 , further comprising an electrode between the first partial reflector and the second partial reflector, the electrode configured to alter the position of the movable reflector.
42 . The display device of claim 40 , further comprising a substrate, wherein the second partial reflector is between the first partial reflector and the substrate.
43 . The display device of claim 41 , further comprising a second dielectric layer between the electrode and the second partial reflector.
44 . The display device of claim 40 , further comprising:
a processor that is in electrical communication with the display elements, the processor being configured to process image data; and
a memory device in electrical communication with the processor.
45 . The display device of claim 44 , further comprising:
a driver circuit configured receive processed image data from the processor and to send at least one signal based on the processed image data to the display elements.
46 . The display device of claim 45 , further comprising:
a controller configured to send at least a portion of the image data to the driver circuit.
47 . The display device of claim 44 , further comprising:
an image source module configured to send the image data to the processor.
48 . The display device of claim 47 , wherein the image source module includes at least one of a receiver, transceiver, and transmitter.
49 . The display device of claim 44 , further comprising:
an input device configured to receive input data and to communicate the input data to the processor.
50 . The display device of claim 40 , wherein at least one of the first partial reflector and the second partial reflector includes a nanolaminate structure.
51 . The display device of claim 40 , wherein the second distance is established to provide a white point for the display device and the white point comprises a standardized white point.
52 . A display device comprising a plurality of display elements, each of the display elements including:
means for reflecting light;
first means for partially reflecting light, the first partially reflecting means positioned at a first distance from the reflecting means, wherein the reflecting means is movable with respect to the first partially reflecting means to alter the first distance such that the movable reflecting means and the first partially reflecting means produce light with a first spectral response associated with a first color;
second means for partially reflecting light, the second partially reflecting means positioned at a second fixed distance from the first partially reflecting means, the first partially reflecting means disposed between the reflecting means and the second partially reflecting means; and
at least one layer of dielectric material between the first partially reflecting means and the second partially reflecting means,
wherein the first partially reflecting means and the second partially reflecting means are configured to interferometrically filter light, the first partially reflecting means and the second partially reflecting means defining an optical cavity that is configured to selectively transmit visible wavelengths associated with light having a second spectral response associated with a second color when illuminated with white light.
53 . The display device of claim 52 , wherein the means for reflecting light includes a movable reflector or the first means for partially reflecting light includes a first partial reflector or the second means for partially reflecting light includes a second partial reflector.
54 . The display device of claim 52 , further comprising means for altering the position of the means for reflecting light between the first means for partially reflecting light and the second means for partially reflecting light.
55 . The display device of claim 54 , wherein the means for altering the position of the means for reflecting light includes an electrode.
56 . The display device of claim 52 , further comprising a substrate, wherein the second means for partially reflecting light is between the first means for partially reflecting light and the substrate.
57 . The display device of claim 54 , wherein the at least one layer of dielectric material includes a second layer of dielectric material between the means for altering the position of the means for reflecting light and the second means for partially reflecting light.
58 . A method of making display elements of a display device, the method comprising:
forming a movable reflector;
forming a first partial reflector positioned at a first distance from the movable reflector;
forming a second partial reflector positioned at a second distance from the first partial reflector, the first partial reflector being disposed between the movable reflector and the second partial reflector; and
forming a dielectric layer between the first and second partial reflectors, wherein:
the movable reflector is movable with respect to the first partial reflector to alter the first distance,
the first distance is such that the movable reflector and the first partial reflector produce light with a first spectral response associated with a first color, and
the first and second partial reflectors provide an interferometric filter in which the first and second partial reflectors define an optical cavity that is configured to selectively transmit visible wavelengths associated with light hag a second spectral response associated with a second color when illuminated with white light.
59 . The method of claim 58 , further comprising forming at least one layer of dielectric material between the first partial reflector and the movable reflector.
60 . The method of claim 58 , further comprising forming an electrode between the first partial reflector and the second partial reflector.
61 . The method of claim 60 , further comprising forming a second layer of dielectric material between the electrode and the second partial reflector.
62 . The method of claim 58 , further comprising performing the steps of forming onto a substrate, wherein the second partial reflector is between the first partial reflector and the substrate.
63 . The method of claim 58 , wherein at least one of the first partial reflector and second partial reflector includes a nanolaminate structure.
64 . The method of claim 58 , wherein the second distance is established to provide a white point for the display device and the white point comprises a standardized white point.
65 . The display device of claim 40 , wherein the second color is different than the first color.
66 . The display device of claim 40 , wherein the display device outputs light that appears white.
67 . The display device of claim 40 , wherein the first spectral response is associated with green light, and the second spectral response is associated with magenta light.
68 . The display device of claim 67 , wherein the display device outputs light that appears white.
69 . The display device of claim 52 , wherein the second color is different than the first color.
70 . The display device of claim 52 , wherein the display device outputs light that appears white.
71 . The display device of claim 52 , wherein the first spectral response is associated with green light, and the second spectral response is associated with magenta light.
72 . The display device of claim 71 , wherein the display device outputs light that appears white.
73 . The method of claim 58 , wherein the second color is different than the first color.
74 . The method of claim 58 , wherein the display device outputs light that appears white.
75 . The method of claim 58 , wherein the first spectral response is associated with green light, and the second spectral response is associated with magenta light.
76 . The method of claim 75 , wherein the display device outputs light that appears white.