Image reading device and semiconductor device

An image reading device comprising:

• a first image reading chip that reads an image;
• and
• an optical unit that forms a reduced image of the image on the first image reading chip,
• wherein the first image reading chip includes:
• a first side;
• a second side that is shorter than the first side;
• a first pixel that includes a first photodetector that receives light of a reduced image of the image and performs photoelectric conversion, and generates a first pixel signal;
• a second pixel that includes a second photodetector that receives light of a reduced image of the image and performs photoelectric conversion, and generates a second pixel signal;
• a first readout circuit that is electrically connected to the first pixel and outputs a first readout signal based on the first pixel signal;
• and
• a second readout circuit that is electrically connected to the second pixel and outputs a second readout signal based on the second pixel signal;
• and
• a control circuit that controls operations of the first readout circuit and the second readout circuit,
• wherein the first pixel and the second pixel are provided side by side in a direction in which the first side extends, and
• the first readout circuit, the second readout circuit, and the control circuit are provided side by side in the direction in which the first side extends.