| 摘要 |
PROBLEM TO BE SOLVED: To enhance detection accuracy in a fingerprint sensor of a system detecting a fingerprint by using in-finger scattered light. SOLUTION: An optical sensor chip 52 and infrared light emitting diode chips 53-1 to 53-5, and the like are mounted on an interposer 51. In addition, a light guide image guide member 60 is mounted on the optical sensor chip 52. Further, a light guide member 70 is mounted to straddle the infrared light emitting diode chips 53-1 to 43-5. Furthermore, the entire portion is covered with a synthetic resin mold section 57. The light guide member 70 is obliquely declined at the light guide image guide member 60 side. The distance between the optical sensor chip 52 and the infrared light emitting diode chips 53-1 to 53-5 are spaced apart compared with the conventional system. The light guide member 70 at its upper surface 72 is closer to the light guide image guide member 60 compared with the conventional system. COPYRIGHT: (C)2006,JPO&NCIPI
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