Calfee, Halter & Griswold LLP
Diffraction device comprising first and second diffraction units each having a liquid crystal layer disposed between a diffraction lens and an electrode
A first diffraction unit includes a first diffraction unit which includes a first substrate provided with a first polarizer on one side thereof and a first electrode on the other side thereof; a first diffraction lens provided on the first electrode; a second substrate provided opposite to the first substrate, a second electrode is provided on a side of the second substrate facing to the first substrate; and a first liquid crystal layer provided between the second electrode and the first diffraction lens, and having liquid crystal therein configured to be in a state in which the liquid crystal has a long axis direction parallel to an axial direction of an transmission axis of the first polarizer, or in a state in which the liquid crystal has a long axis direction perpendicular to an axial direction of an transmission axis of the first polarizer.
BOE TECHNOLOGY GROUP CO., LTD.
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Xiaochuan Wei Jifeng Xiandong Jian
Chen Wang Tan Meng Gao