Apparatus for reading fingerprint

An apparatus for reading a fingerprint comprising:

• a light source;
• a photosensor having a transparent substrate opposing said light source, said photosensor having a plurality of photosensor portions formed on said substrate and a transparent resin layer covering said photosensor portions;
• a scattering reflection layer formed on said photosensor on a side opposing said light source;
• and
• an antistatic transparent conductive film formed between said photosensor and said scattering reflection layer;
• wherein light emitted by said light source and scattered and reflected by said scattering reflection layer is incident on each photosensor portion.

An apparatus for reading a fingerprint comprising:

• a light source;
• a photosensor having a transparent substrate opposing said light source, said photosensor having a plurality of photosensor portions formed on said substrate and a transparent resin layer covering said photosensor portions;
• and
• a scattering reflection layer formed on said photosensor on a side opposing said light source;
• wherein light emitted by said light source and scattered and reflected by said scattering reflection layer is incident on each photosensor portion;
• and
• wherein said scattering reflection layer includes a plurality of transparent sheets having different refractive indices.

An apparatus for reading a fingerprint comprising:

• a light source;
• a photosensor having a transparent substrate opposing said light source, said photosensor having a plurality of photosensor portions formed on said substrate and a transparent resin layer covering said photosensor portions;
• a scattering reflection layer formed on said photosensor on a side opposing said light source;
• and
• a transparent conductive film for preventing static electricity formed on one surface of said scattering reflection layer;
• wherein light emitted by said light source and scattered and reflected by said scattering reflection layer is incident on each photosensor portion.

An apparatus for reading a fingerprint comprising:

• a light source;
• a photosensor arranged on said light source and having a large number of photosensor portions;
• and
• a large number of transparent particles attached to said photosensor and spaced apart from each other.

An apparatus for reading a fingerprint comprising:

• a light source;
• a photosensor arranged on said light source and having a large number of photosensor portions;
• and
• a scattering reflection layer including a transparent base layer mounted on the photosensor and having a plurality of hollow portions in which at least one of a gas and a liquid is filled.

An apparatus for reading a fingerprint comprising:

• a light source;
• a photosensor arranged on said light source and having a large number of photosensor portions;
• a scattering reflection layer formed on said photosensor;
• and
• a transparent conductive film for preventing static electricity formed on said scattering reflection layer,
• wherein light emitted by said light source and scattered and reflected by said scattering reflection layer is incident on each photosensor portion.

An apparatus for reading a fingerprint comprising:

• a light source;
• a photosensor arranged on or over said light source, said photosensor comprising a plurality of photosensor portions each of which includes a semiconductor layer, source and drain electrodes, and a gate electrode, wherein each of said photosensor portions outputs a drain current in accordance with an amount of incident light to said semiconductor layer thereof;
• a recess/projection detection optical element layer disposed on said photosensor, said recess/projection detection optical element having an upper surface to be contacted with a finger thereon and a lower surface opposing said upper surface;
• and
• a transparent conductive film for preventing static electricity formed on one of said upper and lower surfaces of said recess/projection detection optical element layer.

An apparatus for reading a fingerprint comprising:

• a light source;
• a photosensor arranged on or over said light source, said photosensor comprising a plurality of photosensor portions each of which includes a semiconductor layer, source and drain electrodes, and a transparent gate electrode, wherein an overcoat film is deposited on an entire surface of said photosensor portions, and wherein each of said photosensor portions outputs a drain current in accordance with an amount of incident light to said semiconductor layer thereof;
• and
• a transparent conductive film for preventing static electricity formed on said overcoat film of said photosensor.