US 12,317,710 B2
Method of determining the spread of an organic layer in an oled
Ki Ho Bang, Hwaseong-si (KR); Eun Hye Kim, Namyangju-si (KR); and Won Suk Choi, Seoul (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Gyeonggi-Do (KR)
Filed by Samsung Display Co., Ltd., Yongin-si (KR)
Filed on Dec. 19, 2023, as Appl. No. 18/545,278.
Application 18/545,278 is a division of application No. 17/114,986, filed on Dec. 8, 2020, granted, now 11,882,735.
Claims priority of application No. 10-2020-0011221 (KR), filed on Jan. 30, 2020.
Prior Publication US 2024/0122017 A1, Apr. 11, 2024
Int. Cl. H01L 27/32 (2006.01); H01L 51/52 (2006.01); H01L 51/56 (2006.01); H10K 50/844 (2023.01); H10K 59/122 (2023.01); H10K 59/131 (2023.01); H10K 71/00 (2023.01); H10K 59/12 (2023.01)
CPC H10K 59/131 (2023.02) [H10K 50/844 (2023.02); H10K 59/122 (2023.02); H10K 71/00 (2023.02); H10K 59/1201 (2023.02)] 5 Claims
OG exemplary drawing
 
1. A method of manufacturing a display apparatus including a display area for displaying an image and a non-display area adjacent to the display area, the method comprising:
providing a thin film transistor layer, which includes a thin film transistor and an insulating layer, on a base substrate;
providing a first via insulating layer on the thin film transistor layer;
providing a conductive layer, which includes a power supply wire, on the first via insulating layer;
providing a second via insulating layer on the first via insulating layer, on which the conductive layer is provided, wherein a portion of the second via insulating layer constitutes a first dam disposed in the non-display area to surround the display area, wherein a portion of the second via insulating layer constitutes a first stacked structure disposed between the first dam and the display area in the non-display area;
providing a first inorganic layer on the base substrate, on which the second via insulating layer is provided;
providing an organic material onto the first inorganic layer; and
determining a location of an outer periphery of the organic material, which spreads along a top surface of the first inorganic layer, based on change of a light reflection degree on the first stacked structure.