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. 02, 2019
Filed:
Jul. 11, 2016
Shenzhen China Star Optoelectronics Technology Co., Ltd., Shenzhen, Guangdong, CN;
Shenzhen China Star Optoelectronics Technology Co., Ltd, Shenzhen, Guangdong, CN;
Abstract
The present disclosure discloses a copper etchant solution additives and a method for producing copper etchant solution. The method includes: producing copper etchant solution additives, wherein the copper etchant solution additives is an inorganic solution with cupric ions (Cu2+), and deionized water is a solvent for the copper etchant solution additives and is electric neutrality; before wet-etching, the copper etchant solution additives is added in the copper etchant solution, and the copper etchant solution is with a cupric ions (Cu2+) concentration of 700-1000 ppm. Through the above method, the present disclosure can improve etchant property of copper etchant solution to increase etching rate and uniformity.