×

Bistable liquid crystal display and writing device with high brightness and contrast

  • US 10,228,599 B1
  • Filed: 08/15/2016
  • Issued: 03/12/2019
  • Est. Priority Date: 08/14/2015
  • Status: Active Grant
First Claim
Patent Images

1. A liquid crystal device, comprising:

  • a first conductive layer;

    a second conductive layer; and

    a liquid crystal film between the first and second conductive layers, the liquid crystal film including a first liquid crystal layer, a second liquid crystal layer and a middle polymer layer between the first and second liquid crystal layers;

    wherein the first and second liquid crystal layers are configured to switch from a light scattering state to a light reflective state to display content, and the first and second liquid crystal layers are configured to switch from the light reflective state to the light scattering state to erase the content;

    wherein during operation a portion of the first liquid crystal layer and a portion of the second liquid crystal layer are configured to switch from the light scattering state to the light reflective state to display the content in response to a mechanical pressure applied to a surface of the liquid crystal device at a place where the content is to be displayed without an electric field applied across the first and second liquid crystal layers.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×