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:
Apr. 12, 2016
Filed:
Dec. 17, 2013
Htc Corporation, Taoyuan, Taoyuan County, TW;
Fu-Cheng Fan, Taoyuan, TW;
Ming-Tien Lin, Taoyuan, TW;
HTC CORPORATION, Taoyuan, TW;
Abstract
An active filter includes a transparent area and a non-transparent area; a first cavity arranged in the transparent area and formed between a first pair of electrode plates; a second cavity arranged in the non-transparent area and formed between a second pair of electrode plates, wherein the second cavity connects to the first cavity through a first passage; a first liquid flowing between the first cavity and the second cavity for filtering light within a first wavelength range; and a controller for selectively applying a voltage difference to the first pair of electrode plates or the second pair of electrode plates to make the first liquid flow into one of the first cavity and the second cavity.