Semiconductor device including light-collimating layer and biometric device using the same

A semiconductor device, comprising:

• a substrate having a plurality of pixels;
• and
• a light-collimating layer disposed on the substrate, comprising:
• a transparent material layer covering the pixels;
• a first light-shielding layer disposed on the substrate;
• a second light-shielding layer disposed on the first light-shielding layer;
• a third light-shielding layer disposed on the second light-shielding layer;
• and
• a plurality of transparent pillars disposed in the first light-shielding layer and the second light-shielding layer,
• wherein the transparent material layer comprises:
• a raised portion disposed between the substrate and the first light-shielding layer;
• and
• a plurality of separating portions disposed between the first light-shielding layer and the second light-shielding layer and disposed between the second light-shielding layer and the third light-shielding layer,
• wherein a thickness of the second light-shielding layer is different from a thickness of the third light-shielding layer.