Abstract: A method for thinning a fingerprint identification module includes the steps of: providing at least one fingerprint identification module, wherein the fingerprint identification module includes a glass substrate and a plurality of laminated fingerprint identification members; providing a protective layer on each laminated fingerprint identification member; providing a dissociable sealant around each laminated fingerprint identification member and the protective layer of the fingerprint identification module and being adhered to support plate to form a carrier plate to be etched; etching the carrier plate to be etched and allowing an etching solution to etch the glass substrate until a thickness to be thinned is etched to form a semi-finished carrier plate; dissociating the dissociable sealant of the semi-finished carrier plate to reduce its viscosity; and removing the support plate, the dissociable sealant and the protective layer to complete a finished product of the thinned fingerprint identification module

Abstract: The disclosure provides a touch recognition device, including a display device and manufacturing method thereof. The touch recognition device includes a substrate, a thin film transistor layer, a transparent conductive layer, a first metal layer, a piezoelectric material layer and a second metal layer. The transparent conductive layer is disposed on an end of the thin film transistor layer, and the transparent conductive layer includes a plurality of transparent electrodes. The first metal layer is adjacent to the plurality of transparent electrodes. The piezoelectric material layer is disposed on the transparent conductive layer and the first metal layer. The second metal layer is disposed on the piezoelectric material layer to achieve the effect of increasing voltage of signals and power of ultrasound.

Abstract: The present invention is a display device, comprising a display module, a fingerprint recognition module and a speaker module. The back of the display module is provided with a fingerprint recognition module and a speaker module. A common electrode layer is arranged between the fingerprint recognition module and the speaker module, so that the thickness of the display can be greatly reduced.