Apparatus for manufacturing display device
An apparatus for manufacturing a display device includes a chamber, a heating member disposed inside the chamber to provide a thermal atmosphere inside the chamber, where the heating member includes a first heater and a second heater facing each other, a height adjustment member including an end disposed between the first heater and the second heater, and a driving unit which drives the end of the height adjustment member to move up or down such that the end of the height adjustment member is located at one of a first height and a second height which are different heights between the first heater and the second heater. Each of the first height and the second height is different from a height of a top surface of the first heater, and different from a height of a bottom surface of the second heater facing the top surface of the first heater.
1. A method for manufacturing a display device, the method comprising:
providing a chamber in which a first heater and a second heater facing each other along a first direction are located in an inner space;
arranging a target substrate between the first heater and the second heater;
comparing a height of the target substrate along the first direction with a height of a thermal equilibrium zone along the first direction by a comparison operation unit; and
adjusting the height of the target substrate along the first direction based on a comparison result of the comparison operation unit so as to locate the target substrate in the thermal equilibrium zone;
wherein the thermal equilibrium zone, which is thermally uniform, is located between the first heater and the second heater along the first direction.
2. The method of claim 1 , further comprising:
heating a target substrate using the first heater and the second heater.
3. The method of claim 1 , wherein
the first heater is disposed at a lower part of the inner space of the chamber,
the second heater is disposed at an upper part of the inner space of the chamber, and
the target substrate is arranged at a middle part of the inner space of the chamber.
4. The method of claim 1 , further comprising:
measuring a location of the thermal equilibrium zone between the first heater and the second heater.
5. The method of claim 1 , wherein
the target substrate is spaced apart from the first heater and the second heater, and
a temperature of the target substrate is different from a temperature of the first heater and a temperature of the second heater.
6. The method of claim 1 , wherein
the first heater and the second heater are parallel to each other, and
a height adjustment member supports the target substrate in parallel with the first heater and the second heater.
7. The method of claim 1 , wherein each of a width of the first heater and a width of the second heater is greater than a width of the target substrate.
8. The method of claim 7 , wherein each of a side surface of the first heater and a side surface of the second heater protrudes further outward than a side surface of the target substrate.
9. The method of claim 1 , wherein
a temperature of the first heater increases from a center toward an edge of the first heater, and
a temperature of the second heater increases from a center toward an edge of the second heater.
10. The method of claim 1 , further comprising:
cooling the target substrate,
wherein the cooling the target substrate comprises:
suppling gas into the chamber; and
discharging the gas;
wherein the gas includes at least one selected from nitrogen (N 2 ) and argon (Ar).