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:
Jun. 01, 2021
Filed:
Jan. 11, 2018
Sharp Kabushiki Kaisha, Sakai, JP;
Takatoshi Orui, Sakai, JP;
Tadashi Ohtake, Sakai, JP;
Wataru Nakamura, Sakai, JP;
Kiyoshi Minoura, Sakai, JP;
Kenichi Kitoh, Sakai, JP;
SHARP KABUSHIKI KAISHA, Sakai, JP;
Abstract
A scanning antenna includes a TFT substrate including a plurality of TFTs supported by a first dielectric substrate and a plurality of patch electrodes, a slot substrate including a slot electrode supported by a second dielectric substrate, a liquid crystal layer provided between the TFT substrate and the slot substrate, and a reflective conductive plate disposed opposing the second dielectric substrate across a dielectric layer. The slot electrode includes a plurality of slots disposed corresponding to the plurality of patch electrodes, each patch electrode is connected to a drain of the corresponding TFT, the slot electrode includes Cu layers, and lower metal layers and/or an upper metal layer, and the lower metal layer and/or the upper metal layer decrease about a half or more of a tensile stress of the Cu layer.