The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 10, 2023
Filed:
Nov. 02, 2018
Lg Chem, Ltd., Seoul, KR;
Abstract
A transmittance-variable device, a driving method thereof, a method for improving a light shielding ratio therein, and a use thereof are disclosed herein. In some embodiments, a transmittance-variable device includes a transmittance-variable film capable of switching between a transparent mode and a black mode depending on application of a voltage signal; and a power source for applying a voltage signal having a frequency of 30 Hz or less to implement the black mode, wherein the transmittance-variable film comprises a first electrode substrate, an electrophoretic layer, and a second electrode substrate sequentially arranged. The transmittance-variable device can exhibit an excellent light shielding ratio in the black mode after driving with a voltage signal, and such a transmittance-variable device can be usefully used in a smart window.