Etching is a technique in which materials are removed by chemical reaction or physical impact. Etching techniques can be divided into two types: wet etching and dry etching. It can be used to remove the protective film of the area to be etched after exposure, plate making and development, and contact with chemical solutions during etching to achieve the effect of dissolving and corroding, forming bumps or hollowing out.
It was first used to manufacture copper plate, zinc plate and other printing embossing plates, and also widely used in the processing of weight reduction instrument panels, nameplates and thin workpieces that are difficult to process by traditional processing methods; after continuous improvement and process equipment Development can also be used in the processing of precision etching products for electronic thin parts in the aviation, machinery, and chemical industries. Especially in the semiconductor manufacturing process, etching is an indispensable technology.
