Variable light transmission panel and door having the same

A door including a frame and mounted on a body by a hinge so as to be opened and closed, the door comprising:

• a glass member provided on a front surface side of the frame;
• a protective panel provided on an inner surface side of the frame;
• a variable light transmission panel provided between the glass member and the protective panel;
• a light-emitting member provided between the protective panel and the variable light transmission panel;
• and
• a power supply member configured to supply power to the light-emitting member,
• wherein the variable light transmission panel includes a glass or acrylic plate that allows external light to pass therethrough, and a sheet attached to the glass or acrylic plate and made of a thermoplastic resin of polymethyl methacrylate (PMMA) or polycarbonate (PC) and nano-sized dyes,
• a plurality of nano-sized pores are provided in the sheet, and
• by irradiating light toward an outer periphery of the glass or acrylic plate, external light passes through the plurality of nano-sized pores to maintain a bright state.