Keyboard device and electronic apparatus

An electronic apparatus comprising:

• a chassis;
• and
• a keyboard device including a light source and a plurality of keycaps that is capable of emitting light with light emitted from the light source and facing a top surface of the chassis,
• wherein the keyboard device includes
• a base plate configured to support the keycaps on a top surface side, and
• a membrane sheet that has a top contact sheet, a bottom contact sheet, and a spacer sheet interposed between the top contact sheet and the bottom contact sheet, and that is laminated on a top surface of the base plate,
• the top contact sheet, the bottom contact sheet, and the spacer sheet have light transmittance,
• a light reflecting layer is provided on a top surface of the top contact sheet, and
• the membrane sheet has a part of at least one sheet of the top contact sheet, the bottom contact sheet, and the spacer sheet disposed below the keycaps, and a light diffusion pattern on a surface of the part disposed below the keycaps.