| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent a bad influence due to an infrared ray transmitted through a substrate for improvement of detection accuracy in a fingerprint sensor detecting a fingerprint by using scattered light inside a finger. <P>SOLUTION: A solid pattern 90 is arranged in an area for mounting a linear optical sensor chip 52 on the upper face of the substrate 51. The pattern 90 is provided with a mounting area corresponding part 91 corresponding to a linear optical sensor chip mounting area 83 and expansion area parts 92X1, 92X2, 99Y1, and 99Y2 expanding from the mounting area corresponding part 91 in the whole circumference directions. The expansion area parts 92X1, 92X2, 99Y1, and 99Y2 restrict leakage of the infrared ray 10B, which is transmitted through the substrate, to the upper face of the substrate 51 in the circumference part of the linear optical sensor chip 52. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
