AN ELECTRONIC DISPLAY WITH AN IMPROVED DEAD-FRONT PRESENTATION

摘要

Disclosed herein is an electronic display with an improved dead-front presentation. The electronic display comprises a backlit display configured to present content, a dichroic guest host dye layer disposed on the backlit display and a circuit electrically coupled to the backlit display and to the dichroic guest host dye layer. The guest host dye layer has: (i) an on state in which guest host dye crystals included therein are oriented in an orthogonal orientation to the backlit display whereby light from the backlit display is able to pass through the guest host dye layer; and (ii) an off state in which guest host dye crystals included therein are oriented in a parallel orientation to the backlit display whereby transmission of light through the guest host dye layer is effectively blocked. The circuit is configured, in response to the backlit display being on, to control the guest host dye layer to be in the on state and is configured, in response to the backlit display being off, to control the guest host dye layer to be in the off state.