| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an electronic component which identifies a built-in electronic component mounted in a mold material from the outside of the mold material, a piezoelectric oscillator, a recognition method of the built-in electronic component, and the recognition method of a piezoelectric vibrator. <P>SOLUTION: The electronic component 30 has the built-in electronic component 10, and a molding part covering the built-in electronic component 10 by the mold material 46. The surface of the built-in electronic component 10 is coated with an X-ray absorption material, and an indicator for identifying the built-in electronic is formed. By irradiating such an electronic component 30 with an X-ray, the indicator formed in the built-in electronic component 10 is recognized. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
