Curved glass manufacturing method

A method for manufacturing curved glass, the method comprising:

• preparing a mold assembly by stacking a lower mold, a glass part that has a flat shape, and an upper mold, the mold assembly comprising an elastic member that is disposed between the lower mold and the upper mold and that defines a space between the upper mold and the glass part;
• placing the mold assembly in a first chamber, and heating the mold assembly in the first chamber;
• moving the mold assembly from the first chamber to a second chamber, and pressurizing the upper mold and the elastic member downward to the lower mold in the second chamber to mold the glass part into a curved shape;
• moving the mold assembly from the second chamber to a third chamber, and cooling the glass part in the third chamber;
• and
• moving the mold assembly from the third chamber to a fourth chamber, and cooling the glass part in the fourth chamber,
• wherein each of the first chamber, the second chamber, and the third chamber comprises a first hot plate comprising:
• a heating portion configured to contact each of an upper side of the upper mold and a lower side of the lower mold and to change a temperature of the mold assembly based on electric current, and
• a heat transfer layer that covers the heating portion, and
• wherein heating the mold assembly in the first chamber comprises bringing the first hot plate located in the first chamber into contact with each of the upper side of the upper mold and the lower side of the lower mold.