In mold manufacture of an object with embedded display panel
View Patent ↗This invention relates to an object having a display panel embedded in its top surface and processes for its manufacture. This invention also relates to an in-mold display transfer film or foil, which comprises a temporary carrier film, a release layer, a display panel, an adhesive or tie layer and optionally a durable layer.
1. An in-mold display transfer film or foil which comprises the following layers in sequence:
(a) a temporary carrier film,
(b) a release layer,
(c) an optional durable layer,
(d) a display panel, and
(e) an adhesive or tie layer, wherein the display panel comprises a display device that is a flipping ball display, a liquid powder display, an electrophoretic display, an organic light emitting display, a polymer light emitting display, or a liquid crystal display; and wherein the temporary carrier film is in contact with the inner surface of a mold.
2. The in-mold display transfer film or foil of claim 1 wherein said temporary carrier film is a thin film of PET, PEN or PC.
3. The in-mold display transfer film or foil of claim 1 wherein said release layer is formed from wax, paraffin or silicone or a highly smooth and impermeable coating prepared from a radiation curable multifunctional acrylate, silicone acrylate, epoxide, vinyl ester, vinyl ether, allyl or vinyl, unsaturated polyester or a blend thereof.
4. The in-mold display transfer film or foil of claim 1 wherein said release layer comprises a condensation polymer, copolymer, blend or composite selected from the group consisting of epoxy, polyurethane, polyimide, polyamide, melamine formaldehyde, urea formaldehyde and phenol formaldehyde.
5. The in-mold display transfer film or foil of claim 1 wherein said optional durable layer is formed from a radiation curable multifunctional acrylate, epoxide, vinyl ester, diallyl phthalate, vinyl ether or a blend thereof.
6. The in-mold display transfer film or foil of claim 1 wherein said optional durable layer comprises a condensation polymer or copolymer.
7. The in-mold display transfer film or foil of claim 1 wherein said optional durable layer comprises a sol-gel silicate or titanium ester.
8. The in-mold display transfer film or foil of claim 1 wherein said adhesive layer is formed from polyacrylate, polymethacrylate, polystyrene, polycarbonate, polyurethane, polyester, polyamide, epoxy resin, ethylene vinylacetate copolymer, or thermoplastic elastomer or a copolymer, blend or composite thereof.
9. The in-mold display transfer film or foil of claim 1 wherein said adhesive layer is a hot melt or heat activated adhesive.
10. The in-mold display transfer film or foil according to claim 1 , wherein said electrophoretic display is a microcup-based electrophoretic display.
11. The in-mold display transfer film or foil according to claim 1 , wherein said liquid crystal display is a cholesteric liquid crystal display, a polymer dispersed liquid crystal display, or a microcup-based liquid crystal display.
12. An in-mold display insertion film or foil which comprises only one carrier layer, a display panel and an adhesive layer, wherein said display panel is between the carrier layer and the adhesive layer, wherein the display panel comprises a display device that is a flipping ball display, a liquid powder display, an electrophoretic display, an organic light emitting display, a polymer light emitting display, or a liquid crystal display; and wherein the carrier layer is in contact with the inner surface of a mold.
13. The in-mold display insertion film or foil of claim 12 wherein said display panel is formed directly on the carrier layer.
14. The in-mold display insertion film or foil according to claim 12 , wherein said electrophoretic display is a microcup-based electrophoretic display.
15. The in-mold display insertion film or foil according to claim 12 , wherein said liquid crystal display is a cholesteric liquid crystal display, a polymer dispersed liquid crystal display, or a microcup-based liquid crystal display.