Title:
FINGERPRINT IMAGING SYSTEM AND FORMING METHOD THEREOF
Document Type and Number:
WIPO Patent Application WO/2017/063119
Kind Code:
A1
Abstract:
A fingerprint imaging system and a method for forming the same are provided. The system includes: a backlight system; a sensor array on the backlight system, wherein the sensor array comprises a plurality of photodiodes and a plurality of light transmission regions between adjacent photodiodes; and an anti-light-scattering layer formed on the sensor array, wherein the anti-light-scattering layer comprises a plurality of first portions and a plurality of second portions disposed between adjacent first portions, wherein the plurality of first portions cover at least the plurality of photodiodes respectively, and refractivity of the plurality of first portions is greater than refractivity of the plurality of second portions. In the present disclosure, possibility of light scattering and crosstalk may be reduced, and quality of images formed may be improved accordingly.
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Inventors:
ZHU HONG (CN)
LING YAN (CN)
ZHENG YAJIE (CN)
LING YAN (CN)
ZHENG YAJIE (CN)
Application Number:
PCT/CN2015/091742
Publication Date:
April 20, 2017
Filing Date:
October 12, 2015
Export Citation:
Assignee:
SHANGHAI OXI TECH CO LTD (CN)
International Classes:
G06V30/144
Domestic Patent References:
| WO2014109711A1 | 2014-07-17 |
Foreign References:
| US5446290A | 1995-08-29 | |||
| US20090074316A1 | 2009-03-19 | |||
| US20130119237A1 | 2013-05-16 | |||
| US20120211644A1 | 2012-08-23 | |||
| CN204463158U | 2015-07-08 | |||
| US20050213799A1 | 2005-09-29 |
Attorney, Agent or Firm:
UNITALEN ATTORNEYS AT LAW (CN)
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