COVER ASSEMBLY FOR AN ELECTRONIC DEVICE, METHOD OF MANUFACTURE, AND DEVICE COMPRISING THE COVER ASSEMBLY
A cover assembly for an electronic device includes a glass layer having a first surface and a second surface opposite the first surface, a first having a first surface and a second surface opposite the first surface, and an optically clear polymer film disposed on the optically clear adhesive on a side opposite the glass layer, the polymer film comprising a thermoplastic polymer. The cover assembly transmits greater than 85% of visible light as determined according to ASTM D1003-00. A method of manufacturing the cover assembly is also described. The cover assembly can be useful for use with an electronic device.
1 . A cover assembly for an electronic device, comprising
a glass layer having a first surface and a second surface opposite the first surface;
a first optically clear adhesive layer disposed on at least a portion of the first surface of the glass layer; and
an optically clear polymer film disposed on the optically clear adhesive on a side opposite the glass layer, the polymer film comprising a thermoplastic polymer;
wherein the cover assembly transmits greater than 85% of visible light as determined according to ASTM D1003-00.
2 . The cover assembly of claim 1 , wherein the glass layer has a thickness of
50 micrometers to 25 millimeters; or
greater than 450 micrometers.
3 . The cover assembly of claim 1 , wherein the glass layer comprises chemically strengthened glass, non-strengthened glass, tempered glass, or optically transparent synthetic crystal.
4 . The cover assembly of claim 1 , wherein the optically clear adhesive layer comprises epoxy, acrylate, amine, urethane, silicone, thermoplastic urethane, ethyl vinyl acetate, hindered amine light stabilizer free ethyl vinyl acetate, or a combination comprising at least one of the foregoing.
5 . The cover assembly of claim 1 , wherein the optically clear adhesive has a thickness of 1 to 2000 micrometers.
6 . The cover assembly of claim 1 , wherein the polymer film comprises a polyacetal, poly(C 1-6 alkyl)acrylate, polyarylate, polycarbonate, polyester, polyetherimide, polyimide, poly(C 1-6 alkyl)methacrylate, polyolefin, polystyrene, polyurethane, polyvinyl alcohol, polyvinyl ester, polyvinyl ether, polyvinyl halide, polyvinyl nitrile, polyvinyl ketone, polyvinylidene fluoride, or a combination comprising at least one of the foregoing thermoplastic polymers.
7 . The cover assembly of claim 1 , wherein the polymer film has a thickness of
1 micrometer to 20 millimeters; or
less than 300 micrometers.
8 . The cover assembly of claim 1 , wherein the cover assembly further comprises a second optically clear adhesive layer.
9 . The cover assembly of claim 1 , wherein the cover assembly further comprises a functional layer disposed on at least a portion of the glass layer, the polymer film, or both.
10 . The cover assembly of claim 9 , wherein the functional layer comprises an anti-reflection coating, an anti-glare coating, an antimicrobial coating, a conductive layer, an anti-fingerprint coating, an anti-smudge coating, an anti-fog coating, or a combination comprising at least one of the foregoing.
11 . The cover assembly of claim 9 or 10 , wherein the functional layer comprises a conductive layer disposed on at least a portion of the polymer film on a side opposite the first optically clear adhesive layer.
12 . The cover assembly of claim 1 , further comprising a decorative pattern disposed on at least a portion of the glass layer, the polymer film, or both, or wherein the glass layer, the polymer film, or both is textured.
13 . The cover assembly of claim 1 , wherein the cover assembly exhibits curvature in a direction perpendicular to the first and second surfaces of the glass layer, or wherein the cover assembly is at least partially curvilinear.
14 . A method of manufacturing the cover assembly of claim 1 , the method comprising,
applying the optically clear adhesive to at least a portion of the first surface of the glass layer; and
applying the polymer film to the optically clear adhesive on a side opposite the first surface of the glass layer.
15 . An electronic device comprising the cover assembly of claim 1 .
16 . The electronic device of claim 15 , comprising the cover assembly disposed on a display of the electronic device.
17 . The electronic device of claim 16 , wherein the display is heads-up display, a display console, or a touch screen display.
18 . The electronic device of claim 15 , wherein the device is a lighting device.
19 . The electronic device of claim 15 , wherein the cover assembly is laminated onto the device, or molded onto the device, or welded onto the device.
20 . The electronic device of claim 15 , wherein the cover assembly exhibits curvature in a direction perpendicular to the first and second surfaces of the glass layer, and the display of the electronic device exhibits a curvature that is complementary to the curvature of the cover assembly.