| 主权项 |
1. A light controlling apparatus, comprising:
a first electrode on a first substrate; a first alignment film on the first electrode; a second electrode on a second substrate facing the first substrate; a second alignment film on the second electrode; and a guest-host liquid crystal layer between the first alignment film and the second alignment film, the guest-host liquid crystal layer including cholesteric liquid crystals and dichroic dyes, wherein the first and second electrodes provide a vertical electric field, at least one of the first and second electrodes provides a horizontal electric field, the cholesteric liquid crystals have a homeotropic state when an electric field in a first direction is applied to the guest-host liquid crystal layer, whereby a transparent mode transmitting incident light is realized, the cholesteric liquid crystals have a focal conic state when an electric field in a second direction is applied to the guest-host liquid crystal layer, whereby a light shielding mode shielding incident light is realized, and the cholesteric liquid crystals and the dichroic dyes maintain the same state when no electric field is applied to the guest-host liquid crystal layer. |
