| 摘要 |
PROBLEM TO BE SOLVED: To provide a manufacturing method for a stencil plate for printing sealing which makes it possible to form a pass hole part, a circular pass hole edge part and a circular counter-bored part of an arbitrary depth, together with counter-bored parts for various uses, if necessary, and makes it possible to sufficiently satisfy a quality and a performance as well, by only applying an etching means substantially. SOLUTION: In the manufacturing method for the stencil plate for printing sealing which has the pass hole part for transferring and supplying a liquid sealing resin onto an electronic component of an object of sealing and the circular counter-bored part surrounding the circumference of the lower end opening part of the pass hole part with the circular pass hole edge part interposed, a plurality of thin-section metal blanks to be joined together vertically are etched respectively from the upper and lower sides so that a through hole be formed, and then the etching is completed. Simultaneously with this etching, etching is executed from the lower surface side of the lowermost metal blank and ended simultaneously with the completion of the above etching and thereby the circular counter-bored part having a depth corresponding to about 1/2 of the height of the through hole is formed. By joining the metal blank of each stage to the others, the pass hole part is formed of a combination of the through holes. COPYRIGHT: (C)2003,JPO
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