US Patent No. 10,146,098

TRANSPARENT DISPLAY DEVICE


Patent No. 10,146,098
Issue Date December 04, 2018
Title Transparent Display Device
Inventorship Tsung-Hsien Lin, Kaohsiung (TW)
Cheng-Chang Li, Kaohsiung (TW)
Hung-Chang Jau, Kaohsiung (TW)
Sin-An Lin, Kaohsiung (TW)
Assignee NATIONAL SUN YAT-SEN UNIVERSITY, Kaohsiung (TW)

Claim of US Patent No. 10,146,098

1. A transparent display device, comprising:a first liquid crystal layer comprising a first electrode, a second electrode, a plurality of first liquid crystal molecules, and a plurality of first chiral molecules, wherein the first liquid crystal molecules and the first chiral molecules are disposed between the first electrode and the second electrode; and
a second liquid crystal layer disposed on one side of the first liquid crystal layer, wherein the second liquid crystal layer comprises a third electrode, a fourth electrode, a plurality of second liquid crystal molecules, a plurality of second chiral molecules, and a dichroic dye, and the second liquid crystal molecules, the second chiral molecules, and the dichroic dye are disposed between the third electrode and the fourth electrode;
wherein the first chiral molecules and the first liquid crystal molecules form a plurality of first cholesteric liquid crystals; the second chiral molecules and the second liquid crystal molecules form a plurality of second cholesteric liquid crystals;
the first liquid crystal molecules and the second liquid crystal molecules both have positive anisotropies, the dichroic dye has a visible absorption wavelength ranged between 400 to 780 nm;
wherein the first chiral molecules and the second chiral molecules are independently selected from a group consisting of