Rollable display screen quilt
View Patent ↗A rollable display screen for use in electronic display systems includes a rollable screen that is mechanically coupled to a roller mechanism and has a plurality of pixel elements disposed thereon. The roller mechanism is configured as a stowing mechanism for the rollable screen, and may be further configured to deploy the rollable screen as a substantially planar viewing surface. The rollable display screen can be advantageously used for a durable and easily transported electronic display device since the rollable display screen is light-weight, durable, and compact.
1. An apparatus, comprising:
a composite phosphor-filter layer comprising:
stripes of phosphor where a plurality of parallel fluorescent stripes are formed, wherein adjacent fluorescent stripes are made of different fluorescent materials that absorb light at an excitation wavelength to emit light of different colors, respectively, where the fluorescent stripes include a low-index refraction that is disposed in the region between any separation between phosphor regions;
a first layer sheet, where the first layer sheet includes a coextruded filter layer, where the coextruded filter layer reflects white light and passes an excitation light, where the coextruded filter layer side which has the excitation light passed through is affixed to the stripes of phosphor;
a second layer sheet, where the second layer sheet includes a coextruded filter layer, where the coextruded filter layer reflects white light and passes an excitation light, where the coextruded filter layer side which has the excitation light passed through is affixed to the stripes of phosphor;
the first layer sheet and the second layer sheet are disposed next to one another such that the sheets abut one another to collectively form a single composite phosphor-filter layer, where the spacing between adjacent phosphor stripes is of a particular pitch, where the first layer sheet and the second layer sheet are coupled together by a coupling mechanism; the composite phosphor-filter layer is rolled.
2. The apparatus of claim 1 , further comprising a third layer sheet where the phosphor stripes are between the first layer sheet and the third layer sheet, where there is a low index gap between the phosphor stripes and the third layer sheet.
3. The apparatus of claim 2 , wherein the third layer sheet is the coupling mechanism.
4. The apparatus of claim 2 , wherein the composite phosphor-filter layer has a roll radius that is governed by: a total film thickness, an area of glue between the layers, a shear strength of the glues, and phosphor properties.
5. The apparatus of claim 2 , wherein the third layer sheet overlays the abutment of the first and second layer sheets.
6. The apparatus of claim 2 , wherein the third layer sheet edge is in line with the first layer sheet edge.
7. The apparatus of claim 1 , wherein the coupling mechanism is a tape, wherein the tape is attached at the seam between the first and second layer sheets on the non-phosphor side of the first and second layer sheets.
8. The apparatus of claim 1 , wherein the layer sheet is of an all-polymer construction.
9. The apparatus of claim 1 , wherein the first and second layer sheets further comprise reflective servo reference marks.
10. An apparatus, comprising:
one or more light engines, wherein each light engine includes one or more light sources for emitting a light towards a screen; and
a rollable screen, wherein the rollable screen includes:
a plurality of layer sheets disposed laterally adjacent each other; and
a composite filter layer coupled to the plurality of sheets, wherein the composite filter layer includes:
phosphor regions, wherein each phosphor region includes stripes of phosphor, wherein the stripes of phosphor are a plurality of parallel fluorescent stripes, wherein adjacent fluorescent stripes are made of different fluorescent materials that absorb light at an excitation wavelength to emit light of different colors, respectively; and
a low-index refraction material that is disposed in the region between any separation between phosphor regions.
11. The apparatus of claim 10 , further comprising reflective servo reference marks disposed on the plurality of sheets.
12. The apparatus of claim 11 , wherein the screen has a rolling radius that is between about 14 inches and about 40 inches.
13. The apparatus of claim 12 , wherein the plurality of layer sheets comprises at least 4 layer sheets.
14. An apparatus, comprising:
a rollable screen, wherein the rollable screen includes:
a first layer sheet having a first composite filter layer disposed thereon, wherein the first composite filter layer includes a plurality of first phosphor regions with a first low-index refraction material disposed in the region between any separation between first phosphor regions; and
a second layer sheet having a second composite filter layer disposed thereon, wherein the second composite filter layer includes a plurality of second phosphor regions with a second low-index refraction material disposed in the region between any separation between second phosphor regions, wherein the first layer sheet and the second layer sheet are disposed adjacent one another to collectively form a master layer sheet, and wherein the first composite filter layer and the second composite filter layer are disposed adjacent one another to collectively form a master composite filter layer.
15. The apparatus of claim 14 , further comprising reflective servo reference marks disposed on the plurality of sheets.
16. The apparatus of claim 15 , wherein the screen has a rolling radius that is between about 14 inches and about 40 inches.
17. The apparatus of claim 16 , wherein the plurality of layer sheets comprises at least 4 layer sheets.