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:
Oct. 04, 2016
Filed:
Apr. 22, 2011
Jae-jin Kim, Daejeon, KR;
Bu-gon Shin, Daejeon, KR;
Won-jong Kwon, Daejeon, KR;
LG CHEM, LTD., Seoul, KR;
Abstract
A privacy filter and its preparation method are disclosed. One embodiment of the privacy filter comprises: a first transparent substrate; a second transparent substrate positioned a predetermined distance apart from and opposite to the first transparent substrate; an electrolyte filled between the first and second transparent substrates; and a second transparent conductive layer disposed between the electrolyte and the second transparent substrate. The first transparent substrate comprises: an uneven pattern having a wire grid and trenches formed on the first transparent substrate; a first transparent conductive layer formed on the wire grid and the trenches of the uneven pattern; and an electrochromic layer being formed on the first transparent conductive layer along the sidewall of the wire grid and containing an electrochromic material to transmit or absorb visible light depending on whether an electrical signal is applied or not.