Fingerprint collection device and electronic device

Abstract

The embodiments of the present application provide a fingerprint collection device and an electronic device. The device includes: a light source, emitting light; a glass cover plate, including a flat area and an arc-shaped side; a first conversion structure and a second conversion structure, which are arranged on the inner and / or outer side of the glass cover plate along the length direction of the arc-shaped side, the first conversion structure couples the light emitted by the light source into the glass cover plate, and converts it into a first waveguide light that is fully reflected and propagated along the length direction of the arc-shaped side, and the second conversion structure couples the first waveguide light out of the glass cover plate and converts it into a second waveguide light; an image sensor, receiving the second waveguide light; when a finger contacts the fingerprint pressing area on the arc-shaped side and destroys the fully reflected propagation of the first waveguide light, the second waveguide light carries the fingerprint image of the finger. In this way, fingerprint collection can be achieved on the arc-shaped side without grooving the arc-shaped side, and the setting of the position and size of the fingerprint collection is more flexible, which can improve the overall aesthetics and comfort of the product, and simplify the assembly process of the whole machine.

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