| 摘要 |
PROBLEM TO BE SOLVED: To provide a wafer writing method for easy writing of information to a wafer, and to provide a wafer reading method for easy reading of the information. SOLUTION: Writing information is related to each of information opening parts in a block in advance, a hole is formed at such information opening part as corresponding to a desired writing information, position opening parts 1a-1f are formed at a position being upper part of the block on a wafer 100 corresponding to lines of specified number in the block for writing into the wafer 100, the position opening parts 1a-1f are detected against the wafer 100 written like that are detected, and information opening parts 2a-2f, 3a-3f, 4a-4f in blocks 7a and 7b are detected at the same timing as detection of the position opening parts 1a-1f. Such information opening part as a hole is formed in the blocks 7a and 7b is identified with that detection signal, and based on the result, the information written to the wafer 100 is read. |
