| 摘要 |
PROBLEM TO BE SOLVED: To provide an electronic component having an external surface part made of ceramic with excellent mechanical strength, on which marking with a laser can be carried out. SOLUTION: A ceramic material layer made of ceramic whose deflective strength is≥147 N/mm<SP>2</SP>containing transition metal elements such as titanium oxide is formed on the external surface of an electronic component element assembly, and marking A with a laser is carried out on the external surface part constituted of the ceramic material layer to configure a piezoelectric resonance component 1. COPYRIGHT: (C)2004,JPO
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