Patent ID: 7385655

Claim:
An electronic circuit device comprising: a first external light source; a second external light source; a first substrate provided between said first external light source and said second external light source; a first optical shutter provided over said first substrate; a second substrate provided adjacent to said first substrate so that said first substrate is provided between said first external light source and said second substrate; a second optical shutter provided between said first substrate and said second substrate; a third substrate provided between said second substrate and said second external light source; a first optical sensor provided between said third substrate and said second substrate; a second optical sensor provided over said first substrate; a first electronic circuit provided between said third substrate and said second substrate; and a second electronic circuit provided over said first substrate, wherein a first light emitted from said first external light source is inputted into said first optical shutter, and transmission and non-transmission of said first light are controlled by said first optical shutter, wherein in a case where said first optical shutter transmits said first light, the transmitted first light is inputted into said first optical sensor and is converted into a first electric signal by said first optical sensor to input said first electric signal into said first electronic circuit, wherein a second light emitted from said second external light source is inputted into said second optical shutter, and transmission and non-transmission of said second light are controlled by said second optical shutter, and wherein in a case where said second optical shutter transmits said second light, the transmitted second light is inputted into said second optical sensor and is converted into a second electric signal by said second optical sensor to input said second electric signal into said second electronic circuit.