Switchable peep-proof display device and backlight

Switchable peep-proof display device and backlight

  • CN 105,549,238 A
  • Filed: 03/01/2016
  • Published: 05/04/2016
  • Est. Priority Date: 03/01/2016
  • Status: Active Application
First Claim
Patent Images

1. a changeable peep-proof display device, is characterized in that, comprising:

  • the backlight set gradually, have collimation or to the optical element of centre focus effect, changeable diffusion sheet and display panel;

    Described backlight is used for providing backlight for described display panel;

    Described changeable diffusion sheet can switch between clear state and scattering states, and when being in clear state, described changeable diffusion sheet does not change the direction of propagation of described backlight;

    When being in scattering states, described changeable diffusion sheet carries out scattering to described backlight, obtains wide viewing angle backlight.

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