Portable display
In one embodiment, the modular display includes aggregates of individual panel tiles arranged between two large plastic sheets. The footprint of the large plastic sheet sandwich becomes the dimension of the display screen. The tilettes are phosphor emission panels with a full complement of emittable pixels. By separating the tilettes from the final full dimension sheet, the tilettes can be manufactured in transportable sizes and the outer full dimension sheets can be rolled for easy transport to the final install location.
1. An apparatus comprising:
a plurality of image emission modules each comprising:
multiple phosphor regions, wherein at least one phosphor region emits light of a first color when excited and at least one phosphor region emits light of a second color when excited;
a plurality of light engines, wherein each light engine generates one or more excitation beams to excite the multiple phosphor regions of a corresponding image emission module and the multiple phosphor regions of one or more image emission modules adjacent to the corresponding image emission module; and
a visible light transparent support structure comprising:
a first visible light transparent sheet; and
a second visible light transparent sheet, wherein the plurality of image emission modules are placed in between the first and second visible light transparent sheets and the apparatus has a continuous concave bend facing toward the plurality of light engines.
2. The apparatus of claim 1 , wherein the first visible light transparent sheet and the second visible light transparent sheet are bowed with one sheet held in compression and the other sheet held in tension to form the continuous concave bend.
3. The apparatus of claim 2 , wherein the bowed visible light transparent sheets apply a normal load to the plurality of image emission modules.
4. The apparatus of claim 1 , wherein the plurality of image emission modules are positioned adjacent to each other and the center of the adjacent positioned plurality of image emission modules, a center of the first visible light transparent sheet and a center of the second visible light transparent sheet are substantially centered to each other.
5. The apparatus of claim 4 , wherein the first visible light transparent sheet and the second visible light transparent sheet are of a size greater than an aggregate of the plurality of adjacent image emission modules such that the aggregate of the plurality of adjacent image emission modules are within a perimeter boundary of the first visible light transparent sheet and a perimeter boundary of the second visible light transparent sheet.
6. The apparatus of claim 1 , wherein the plurality of image emission modules further comprises a coextruded dichroic layer that passes excitation light in a first direction and filters visible light in a second direction.
7. The apparatus of claim 1 , wherein the first visible light transparent sheet and the second visible light transparent sheet are each independently selected from materials comprising poly(methyl methacrylate) (PMMA) and polycarbonate acrylic.
8. The apparatus of claim 1 , wherein the first visible light transparent sheet and the second visible light transparent sheet each have a thickness independently selected from about 1.0 millimeter to about 6.0 millimeters.
9. The apparatus of claim 8 , wherein the first visible light transparent sheet has a thickness from about 1.5 millimeters to about 3.0 millimeters, the second visible light transparent sheet has a thickness from about 4.5 millimeters to about 6.0 millimeters.
10. The apparatus of claim 1 , wherein the concave bend has an angle of about five degrees or less.
11. The apparatus of claim 1 , wherein the plurality of image emission modules further comprise a first transparent substrate on which the multiple phosphor regions are mounted.
12. The apparatus of claim 11 , wherein the plurality of image emission modules further comprise a second transparent substrate configured with color filter elements.
13. The apparatus of claim 12 , wherein the plurality of image emission modules further comprise divider members that separate the multiple phosphor regions, and the divider members have walls that are angled with respect to a transparent substrate to which the multiple phosphor regions are mounted.
14. The apparatus of claim 1 , wherein the one or more excitation beams are directed to excite discrete pixel elements formed from the phosphor regions.
15. An apparatus comprising:
a plurality of image emission modules each comprising:
multiple phosphor regions, wherein at least one phosphor region emits light of a first color when excited, and at least one alternate phosphor region emits light of a second color when excited;
a plurality of light engines, wherein each light engine generates one or more excitation beams to excite the multiple phosphor regions of a corresponding image emission module and the multiple phosphor regions of one or more image emission modules adjacent to the corresponding image emission module; and
a visible light transparent support structure comprising;
a first visible light transparent sheet; and
a second visible light transparent sheet;
wherein the plurality of image emission modules are positioned adjacent to each other between the first visible light transparent sheet and the second visible light transparent sheet, and wherein the center of the adjacent positioned plurality of image emission modules and the center of the first and second visible transparent sheets are substantially centered to each other.
16. The apparatus of claim 15 , wherein the first visible light transparent sheet and the second visible light transparent sheet are of a size greater than an aggregate of the plurality of adjacent image emission modules such that the aggregate of the plurality of adjacent image emission modules are within the perimeter boundaries of the first and second visible light transparent sheets.
17. The apparatus of claim 15 , wherein the one or more excitation beams are directed to excite discrete pixel elements formed from the phosphor regions.
18. The apparatus of claim 15 , wherein the plurality of image emission modules further comprise divider members that separate the multiple phosphor regions, and the divider members have walls that are angled with respect to a transparent substrate to which the multiple phosphor regions are mounted.
19. A method for making a portable display screen, comprising:
positioning a plurality of image emission modules on a first visible light transparent sheet, wherein the plurality of image emission modules comprise multiple phosphor regions, wherein at least one phosphor region emits light of a first color when excited and at least one phosphor region emits light of a second color when excited;
positioning a second visible light transparent sheet over the plurality of image emission modules and the first visible light transparent sheet to form a sandwich structure;
simultaneously bending the sandwich structure such that the bowed first and second visible light transparent sheets apply a normal load to the plurality of image emission modules; and
directing one or more beams generated from a light engine of a plurality of light engines to a corresponding image emission module of the plurality of image emission modules to excite the multiple phosphor regions of the corresponding image emission module and the multiple phosphor regions of one or more image emission modules adjacent to the corresponding image emission module.
20. The method of claim 19 , further comprising positioning the plurality of image emission modules adjacent to each other on the first visible light transparent sheet and substantially centering a center of the adjacent plurality of image emission modules and a center of the first and second visible transparent sheets to each other.