Fingerprint identification module and display device

A display device, comprising:

• a display panel;
• and
• a fingerprint identification module, comprising:
• a first lens assembly;
• a second lens assembly with a primary optical axis not parallel to a primary optical axis of the first lens assembly;
• a reflecting mirror assembly comprising a reflecting mirror and a rotating shaft coupled to the reflecting mirror, wherein the rotating shaft is configured to drive the reflecting mirror to rotate, the reflecting mirror comprises a reflecting surface, and the reflecting surface is located at a light exiting side of the first lens assembly and a light incident side of the second lens assembly;
• and
• a light-sensitive element located at a light exiting side of the second lens assembly, wherein:
• the first lens assembly is configured to converge fingerprint-reflected light and project the fingerprint-reflected light onto the reflecting surface, the reflecting surface is configured to reflect the fingerprint-reflected light to the second lens assembly, the second lens assembly is configured to converge the fingerprint-reflected light to the light-sensitive element, and the light-sensitive element is configured to convert the fingerprint-reflected light into an electrical signal to identify fingerprint information;
• in a projection obtained in a thickness direction of the display panel, a projective plane of the fingerprint identification module is located in a projective plane of the display panel;
• and
• the reflecting mirror assembly further comprises:
• a driving element coupled to the rotating shaft;
• a detecting element configured to detect an incident angle of the fingerprint-reflected light projected on the reflecting surface;
• and
• a control element coupled to the detecting element and the driving element, and configured to control the driving element to drive the rotating shaft to rotate according to the incident angle detected by the detecting element.

A fingerprint identification module, comprising:

• a first lens assembly;
• a second lens assembly with a primary optical axis not parallel to a primary optical axis of the first lens assembly;
• a reflecting mirror assembly comprising a reflecting mirror and a rotating shaft coupled to the reflecting mirror, wherein the rotating shaft is configured to drive the reflecting mirror to rotate, the reflecting mirror comprises a reflecting surface, and the reflecting surface is located at a light exiting side of the first lens assembly and a light incident side of the second lens assembly;
• and
• a light-sensitive element located at a light exiting side of the second lens assembly, wherein:
• the first lens assembly is configured to converge fingerprint-reflected light and project the fingerprint-reflected light onto the reflecting surface, the reflecting surface is configured to reflect the fingerprint-reflected light to the second lens assembly, the second lens assembly is configured to converge the fingerprint-reflected light to the light-sensitive element, and the light-sensitive element is configured to convert the fingerprint-reflected light into an electrical signal to identify fingerprint information;
• the reflecting mirror assembly further comprises:
• a driving element coupled to the rotating shaft;
• a detecting element configured to detect an incident angle of the fingerprint-reflected light projected on the reflecting surface;
• and
• a control element coupled to the detecting element and the driving element, and configured to control the driving element to drive the rotating shaft to rotate according to the incident angle detected by the detecting element;
• the detecting element is one of a plurality of detecting elements;
• and
• in a projection obtained in a direction perpendicular to the reflecting surface, projective planes of the plurality of detecting elements are evenly distributed in a projective plane of the reflecting surface.