Multilayered fluorescent screens for scanning beam display systems
First Claim
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1. A display screen, comprising:
- a plurality of screen layers forming a planar stack, the screen layers including;
a fluorescent layer comprising a plurality of parallel fluorescent stripes, wherein the plurality of parallel fluorescent stripes each absorbs excitation light and emits visible light of a respective color, and wherein adjacent fluorescent stripes emit visible light of different respective colors;
an entrance layer on a first side of the fluorescent layer to receive the excitation light and to direct the excitation light to the fluorescent layer; and
a first filter layer on a second side of the fluorescent layer opposite to the first sidewherein the first filter layer comprises a plurality of parallel, first filter stripes, each first filter stripe is aligned with a corresponding fluorescent stripe along a direction perpendicular to the screen layers, the first filter stripe transmits visible light of the respective color emitted by the corresponding fluorescent stripe and absorbs visible light of the respective colors emitted by other fluorescent stripes adjacent to the corresponding fluorescent stripe,wherein the fluorescent layer further includes a plurality of first stripe dividers, each first stripe divider being located between a pair of adjacent fluorescent stripes in the florescent layer and has side walls that are reflective and opaque, andwherein the first filter layer further includes a plurality of second stripe dividers, each second stripe divider being located between a pair of adjacent filter stripes in the filter layer and has side walls that are reflective and opaque.
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Abstract
Fluorescent screens and display systems and devices based on such screens using at least one excitation optical beam to excite one or more fluorescent materials on a screen which emit light to form images. The fluorescent materials may include phosphor materials and non-phosphor materials such as quantum dots.
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Citations
28 Claims
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1. A display screen, comprising:
a plurality of screen layers forming a planar stack, the screen layers including; a fluorescent layer comprising a plurality of parallel fluorescent stripes, wherein the plurality of parallel fluorescent stripes each absorbs excitation light and emits visible light of a respective color, and wherein adjacent fluorescent stripes emit visible light of different respective colors; an entrance layer on a first side of the fluorescent layer to receive the excitation light and to direct the excitation light to the fluorescent layer; and a first filter layer on a second side of the fluorescent layer opposite to the first side wherein the first filter layer comprises a plurality of parallel, first filter stripes, each first filter stripe is aligned with a corresponding fluorescent stripe along a direction perpendicular to the screen layers, the first filter stripe transmits visible light of the respective color emitted by the corresponding fluorescent stripe and absorbs visible light of the respective colors emitted by other fluorescent stripes adjacent to the corresponding fluorescent stripe, wherein the fluorescent layer further includes a plurality of first stripe dividers, each first stripe divider being located between a pair of adjacent fluorescent stripes in the florescent layer and has side walls that are reflective and opaque, and wherein the first filter layer further includes a plurality of second stripe dividers, each second stripe divider being located between a pair of adjacent filter stripes in the filter layer and has side walls that are reflective and opaque. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A display screen, comprising:
a plurality of screen layers forming a planar stack, the screen layers including; a fluorescent layer comprising a plurality of parallel fluorescent stripes, wherein the plurality of parallel fluorescent stripes each absorbs excitation light and emits visible light of a respective color, and wherein adjacent fluorescent stripes emit visible light of different respective colors; an entrance layer on a first side of the fluorescent layer to receive the excitation light and to direct the excitation light to the fluorescent layer; and a first filter layer on a second side of the fluorescent layer opposite to the first side, wherein the first filter layer comprises a plurality of parallel, first filter stripes, each first filter stripe is aligned with a corresponding fluorescent stripe along a direction perpendicular to the screen layers, the first filter stripe transmits visible light of the respective color emitted by the corresponding fluorescent stripe and absorbs visible light of the respective colors emitted by other fluorescent stripes adjacent to the corresponding fluorescent stripe, and wherein each first filter stripe is separated from its corresponding fluorescent stripe by a respective dielectric layer, the respective dielectric layer having a lower refractive index than the fluorescent layer, and a plurality of parallel stripe dividers, wherein each stripe divider is located between a pair of adjacent fluorescent stripes in the fluorescent layer and between a pair of adjacent filter stripes in the first filter layer. - View Dependent Claims (16, 17, 18, 19, 20)
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21. A display screen, comprising:
a plurality of screen layers forming a planar stack, the screen layers including; a fluorescent layer comprising a plurality of parallel fluorescent stripes, wherein the plurality of parallel fluorescent stripes each absorbs excitation light and emits visible light of a respective color, and wherein adjacent fluorescent stripes emit visible light of different respective colors; an entrance layer on a first side of the fluorescent layer to receive the excitation light and to direct the excitation light to the fluorescent layer; and a first filter layer on a second side of the fluorescent layer opposite to the first side, wherein the first filter layer comprises a plurality of parallel, first filter stripes, each first filter stripe is aligned with a corresponding fluorescent stripe along a direction perpendicular to the screen layers, the first filter stripe transmits visible light of the respective color emitted by the corresponding fluorescent stripe and absorbs visible light of the respective colors emitted by other fluorescent stripes adjacent to the corresponding fluorescent stripe; and a dielectric layer in contact with the fluorescent layer on the second side of the fluorescent layer. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28)
Specification