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System and method for preventing damage to products

  • US 10,182,665 B2
  • Filed: 10/13/2015
  • Issued: 01/22/2019
  • Est. Priority Date: 10/15/2014
  • Status: Active Grant
First Claim
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1. An apparatus for preventing damage to products in a display case having a door, the apparatus comprising:

  • a normally black transparent liquid crystal display comprising a number of pixels and positioned between a front glass and a rear glass of the door; and

    a controller electrically connected to the liquid crystal display and comprising a processor and a non-transitory storage device;

    wherein the non-transitory storage device comprises preprogrammed transparency data which when executed by the processor causes the controller to drive the liquid crystal display according to the preprogrammed transparency data;

    wherein the preprogrammed transparency data comprises multiple preprogrammed transparency levels for the liquid crystal display, each of which is associated with a respective time of day;

    wherein said transparency levels are achieved by applying particular voltages to the pixels.

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