Patent ID: 11906476
Assignee: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
Field: Measurement (Instruments)
Classification: CPC G  C  B | IPC B  G

Claim 1:
2. The joining state detection method according to claim 1, wherein the mechanoluminescent substance contained in the joining state detection film is a substance represented by SrAl2O4 that is doped with Eu2+, a substance represented by SrAl2O4 that is doped with at least one of Eu2+, Ho3+, Dy2+, M1, M2, and M3 (M1, M2, and M3 are monovalent to trivalent different metal ions), or a substance represented by CaYAl3O7 that is doped with Eu2+.