Apparatus for manufacturing display device and method of manufacturing display device
A method of manufacturing a display device includes discharging ink including light emitting elements onto a substrate; applying a first electric field to the substrate to fix the light emitting elements; removing foreign substances from the substrate by using a cleaning device in a state in which the first electric field is applied to the substrate; and releasing application of the first electric field after the removing of the foreign substances from the substrate by using the cleaning device.
1 . An apparatus for manufacturing a display device comprising:
a stage supporting a substrate;
an inkjet head discharging ink including light emitting elements onto the substrate;
an electric field applying device applying a first electric field to the substrate to fix the light emitting elements; and
a cleaning device removing foreign substances from the substrate in a state in which the first electric field is applied to the substrate,
wherein the electric field applying device releases application of the first electric field after the cleaning device removes the foreign substances, and
wherein the electric field applying device applies a second electric field to the substrate to align the light emitting elements after the application of the first electric field is released.
2 . The apparatus of claim 1 , wherein
the light emitting elements are arranged and fixed in a random direction by the first electric field, and
the light emitting elements are arranged in a direction by the second electric field.
3 . The apparatus of claim 1 , further comprising:
a light irradiation device irradiating light to the substrate,
wherein the light irradiation device irradiates the light onto the substrate in a state in which the second electric field is applied to the substrate.
4 . The apparatus of claim 1 , wherein the inkjet head discharges additional ink onto the substrate after the application of the first electric field is released.
5 . The apparatus of claim 4 , further comprising:
a processor controlling at least one of the substrate, the inkjet head, the electric field applying device, or the cleaning device,
wherein the processor measures a number of the light emitting elements on the substrate and controls the inkjet head based on a result of comparing the number of the light emitting elements with a reference value.
6 . The apparatus of claim 5 , wherein the inkjet head discharges the additional ink onto the substrate in case that a measured number of the light emitting elements is not included in the reference value.
7 . The apparatus of claim 1 , wherein the cleaning device includes:
a gas supply part spraying gas onto the substrate; and
a gas suction part sucking the foreign substances and residual gas from the substrate.
8 . The apparatus of claim 1 , further comprising:
a driving part driving the stage,
wherein the driving part controls the stage so that the substrate to which the first electric field is applied passes through the cleaning device.
9 . The apparatus of claim 8 , wherein the driving part includes at least one of an air floating device, a roller conveyor device, a transport device connected to the substrate, or a transport device connected to the cleaning device.
10 . The apparatus of claim 1 , wherein the cleaning device includes an ultrasonic cleaner.