A Hidden Fingerprint Device on an Opaque Display Panel

A Hidden Fingerprint Device on an Opaque Display Panel

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Home Goods In recent years, fingerprint recognition has become more and more widely used in mobile phones.A fingerprint recognition device hidden under an opaque display panel designed based on a waveguide and frustrated total internal reflection (FTIR) is proposed and demonstrated herein.In order to meet the demand for a high screen ratio for Connettore mobile phone displays, we use a symmetrical zoom-in and zoom-out coupler design.With this comprehensive coupler and waveguide design, not only can fingerprint recognition be achieved using an opaque display panel, but it also meets the appearance requirements for a mobile phone with a high screen ratio.