Patent ID: 11942481
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 9:
10. A method of manufacturing a display device, comprising:
forming an amorphous silicon layer on a substrate;
cleaning the amorphous silicon layer with hydrofluoric acid;
rinsing the amorphous silicon layer with hydrogenated deionized water;
irradiating the amorphous silicon layer with a laser beam having an energy density in a range of about 440 mJ/cm2 to about 490 mJ/cm2 to form a polycrystalline silicon layer;
etching the polycrystalline silicon layer to form a polycrystalline silicon pattern;
forming an insulation layer on the polycrystalline silicon pattern;
forming a gate electrode on the insulation layer;
injecting an ion at a portion of the polycrystalline silicon pattern to form an active pattern; and
forming a display element on the gate electrode.