Çѱ¹Á¤º¸Åë½ÅÇÐȸ ³í¹®Áö (Journal of the Korea Institute of Information and Communication Engineering)
ÇѱÛÁ¦¸ñ(Korean Title) |
128¡¿144 pixel array Áö¹®Àνļ¾¼ ¼³°è |
¿µ¹®Á¦¸ñ(English Title) |
Design of a Fingerprint Authentication Sensor with 128¡¿144 pixel array |
ÀúÀÚ(Author) |
Á¤½Â¹Î
±èÁ¤ÅÂ
À̹®±â
Seung-Min Jung
Jung-Tae Kim
Moon-Key Lee
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¿ø¹®¼ö·Ïó(Citation) |
VOL 07 NO. 06 PP. 1297 ~ 1303 (2003. 11) |
Çѱ۳»¿ë (Korean Abstract) |
¹ÝµµÃ¼ ¹æ½ÄÀÇ capacitive type Áö¹®Àνļ¾¼ÀÇ ½Åȣ󸮸¦ À§ÇÑ °³¼±µÈ ȸ·Î¸¦ ¼³°èÇÏ¿´´Ù. ÃÖ »óÀ§ sensor plate°¡ Áö¹®ÀÇ ±¼°îÀ» °¨ÁöÇÑ capacitanceÀÇ º¯È¸¦ Àü¾ÐÀÇ ½ÅÈ£·Î ÀüȯÇϱâÀ§Çؼ charge-sharing ¹æ½ÄÀÇ È¸·Î¸¦ Àû¿ëÇÏ¿´´Ù. Áö¹®¼¾¼ °¨µµÀúÇÏÀÇ °¡Àå Å« ¿øÀÎÀÎ sensor plate¿¡ Á¸ÀçÇÏ´Â parasitic capacitance¸¦ ÃÖ¼ÒÈÇÏ°í ridge¿Í valley »çÀÌÀÇ Àü¾ÐÂ÷¸¦ Çâ»ó½ÃÅ°±â À§ÇÏ¿© ±âÁ¸°ú´Â ´Ù¸¥ ¾Æ³¯·Î±×¹öÆÛȸ·Î¸¦ ¼³°èÇÏ¿´´Ù. ¼¾¼Àü¾Ð°ú ±âÁØÀü¾Ð ½ÅÈ£¸¦ ºñ±³Çϱâ À§Çؼ ºñ±³±â¸¦ ¼³°èÇÏ¿´À¸¸ç, ¼¾¼¾î·¹ÀÌÀÇ ¼öÁ÷, ¼öÆò°£ isolation ´ëÃ¥À» ÅëÇÏ¿© ESD ¹× ³ëÀÌÁî¹æÁö¸¦ À§ÇÑ ¼³°è¸¦ Á¦¾ÈÇÏ¿´´Ù. Á¦¾ÈµÈ ½Åȣó¸®È¸·Î´Â 128¡¿l44 pixel ±Ô¸ðÀÇ È¸·Î·Î ±¸ÇöµÇ¾ú´Ù. º» ¼³°èȸ·Î´Â ÇâÈÄ »ýüÀνÄÀ» ÀÌ¿ëÇÑ Á¤º¸º¸È£¿ë Áö¹®ÀÎ½Ä ½Ã½ºÅÛ¿¡ ÀÀ¿ëµÉ ¼ö ÀÖÀ¸¸®¶óº»´Ù.
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¿µ¹®³»¿ë (English Abstract) |
This paper propose an advanced circuit for fingerprint sensor signal processing. We increased the voltage between ridge and valley by modifying the parasitic capacitance eliminating circuit of sensor plate. The analog comparator was designed for comparing the sensor signal voltage with the reference signal voltage. We also propose an effective isolation strategy for removing noise and signal coupling, ESD of each sensor pixel. The 128¡¿l44 pixel fingerprint sensor circuit was designed and simulated, and the layout was performed.
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Å°¿öµå(Keyword) |
fingerprint
sensor
pixel
capacitive type
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ÆÄÀÏ÷ºÎ |
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