MOUNTING SUBSTRATE, AND DEVICE AND METHOD FOR DETECTING BAD MARK

摘要

PROBLEM TO BE SOLVED: To efficiently detect bad marks on a split substrate. SOLUTION: A mounting substrate 18 that is applied to a device and method for detecting bad marks is a multiple substrate that is an aggregate of a plurality of split substrates 19 where electronic components are mounted, the split substrates 19 for composing the multiple substrate are divided into a plurality of blocks (for example, blocks 1-9), and each block is marked by a block bad mark BM1.