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Display stack

  • US 9,811,188 B1
  • Filed: 12/23/2014
  • Issued: 11/07/2017
  • Est. Priority Date: 12/23/2014
  • Status: Active Grant
First Claim
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1. An electronic device comprising;

  • a display stack including;

    a coverglass with a top surface and a bottom surface, the top surface of the coverglass being etched to impart antiglare properties;

    a touch layer contacted with the bottom surface of the coverglass;

    a lightguide positioned beneath the coverglass and configured to receive light from a light source located adjacent to the lightguide;

    a first optically clear adhesive (OCA) layer disposed between the bottom surface of the coverglass and a top surface of the lightguide, the first OCA layer including an acrylic OCA with a predetermined luminous transmittance rating and a silicone OCA with a predefined refractive index;

    an electrophoretic display component positioned beneath the lightguide, the electrophoretic display component configured to display content;

    a second OCA layer disposed between the lightguide and the electrophoretic display component; and

    a ring adhesive disposed around an outer edge of the display stack, the ring adhesive extending from the top surface of the coverglass downward to a bottom surface of the lightguide;

    a midframe disposed below the display stack; and

    one or more elastically deformable foam components disposed between at least a portion of a bottom surface of the display stack and corresponding portions of a top surface of the midframe.

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