Patent ID: 6270620
Filing Date: 2001-08-07
Classification: C23F,H05K

Abstract:
An etching device capable of forming a uniform etchant film, the etching device disposed on a plurality of parallel and coplanar hollow rollers used to support a double-sided board, wherein a plurality of first etchant nozzles is disposed under the hollow rollers, the device comprising:a plurality of solid rollers coplanarly disposed over the hollow rollers and parallel to each other, wherein adjacent solid rollers comprise an interval, the intervals are divided into a plurality of first intervals and a plurality of second intervals and the solid rollers touch the double-sided board to make an etchant film covering the double-sided board more uniform;a plurality of rows of second etchant nozzles disposed over the first intervals and parallel to axes of the solid rollers; anda plurality of rows of air nozzles disposed over the second intervals and parallel to the axes of the solid rollers.