US 12,240,161 B2
Curved-edge display covers and methods of making the same
Nicholas D. Abbatiello, Round Rock, TX (US); Laurent A. Regimbal, Georgetown, TX (US); and Brian John Yates, Cedar Park, TX (US)
Assigned to Dell Products L.P., Round Rock, TX (US)
Filed by Dell Products L.P., Round Rock, TX (US)
Filed on Nov. 20, 2020, as Appl. No. 17/100,809.
Prior Publication US 2022/0167516 A1, May 26, 2022
Int. Cl. B29C 45/73 (2006.01); B29C 45/56 (2006.01); B29K 105/26 (2006.01); B29L 31/34 (2006.01)
CPC B29C 45/73 (2013.01) [B29C 45/561 (2013.01); B29K 2105/26 (2013.01); B29L 2031/3475 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A method comprising:
heating one or more mold portions of a mold, the mold portions being movable relative to one another between:
an open position; and
first and second closed positions, in each of which the mold portions define a mold cavity, wherein the depth of the mold cavity is smaller in the second closed position than in the first closed position;
after heating one or more of the mold portions, injecting a polymeric material into the mold cavity when the mold portions are in the first closed position; and
moving the mold portions to the second closed position to produce a display cover from the polymeric material, the display cover having:
an outer surface and an opposing inner surface;
an edge that connects the outer and inner surfaces;
a central region that defines a portion of each of the outer and inner surfaces, the central region being planar such that a plane lies between the outer and inner surfaces throughout the central region;
lengthwise edge regions and widthwise edge regions, each of the edge regions:
defining a portion of each of the outer and inner surfaces; and
extending from the central region to define a portion of the edge;
wherein each of the widthwise edge regions curves away from the central region such that a line that is tangent to the outer surface at the edge region is substantially perpendicular to the plane of the central region; and
an average thickness, measured between the outer and inner surfaces, that is less than or equal to 0.5 mm.