Fingerprint identification device and electronic device using same

An electronic device comprising:

• a fingerprint identification device comprising:
• a cover;
• a light-shielding layer formed on the cover;
• an adhesive layer formed on the light-shielding layer;
• an intermediate layer between the light-shielding layer and the adhesive layer;
• a protection layer formed on the adhesive layer;
• and
• a fingerprint identification element configured to identify a fingerprint, and the fingerprint identification element being embedded in the protection layer;
• wherein the intermediate layer is configured to dissolve in an organic solvent to separate the light-shielding layer from the adhesive layer when recycling the fingerprint identification device by dipping the fingerprint identification device in the organic solvent;
• the intermediate layer is configured to not dissolve in the organic solvent to protect the fingerprint identification element from being destroyed by the organic solvent when recycling the fingerprint identification device;
• wherein both the adhesive layer and the intermediate layer have rectangular shapes;
• the intermediate layer has a length of D1 and a width of W1;
• the adhesive layer has a length of D2 and a width of W2;
• D1 is at least 50 μm larger than D2, and W1 is at least 50 μm larger than W2.