	US 11,997,905 B2
	OLED mask with end portioned corners
Oh-Seob Kwon, Yongin (KR)
Assigned to Samsung Display Co., Ltd., Yongin-si (KR)
Filed by Samsung Display Co., Ltd., Yongin-si (KR)
Filed on Mar. 14, 2022, as Appl. No. 17/694,613.
Application 17/694,613 is a division of application No. 15/284,210, filed on Oct. 3, 2016, granted, now 11,309,356.
Application 15/284,210 is a continuation of application No. 14/169,829, filed on Jan. 31, 2014, granted, now 9,484,391, issued on Nov. 1, 2016.
Claims priority of application No. 10-2013-0046362 (KR), filed on Apr. 25, 2013.
Prior Publication US 2022/0352260 A1, Nov. 3, 2022
Int. Cl. H01L 27/32 (2006.01); H01L 51/52 (2006.01); H10K 50/805 (2023.01); H10K 50/813 (2023.01); H10K 59/121 (2023.01); H10K 59/122 (2023.01); H10K 59/35 (2023.01); H10K 71/00 (2023.01); H10K 71/16 (2023.01); H10K 50/13 (2023.01)

CPC H10K 59/352 (2023.02) [H10K 50/805 (2023.02); H10K 50/813 (2023.02); H10K 59/121 (2023.02); H10K 59/122 (2023.02); H10K 59/35 (2023.02); H10K 59/353 (2023.02); H10K 71/00 (2023.02); H10K 71/166 (2023.02); H10K 50/13 (2023.02)]

16 Claims

1. A method for manufacturing an organic light emitting diode display, comprising:

forming a first electrode on a substrate,

forming a pixel defining layer on the first electrode, the pixel defining layer including a first opening overlapping the first electrode, and

forming a first organic emission layer on the first electrode using a first mask,

wherein:

the first mask includes a first mask pattern portion which is through-formed to correspond to the pixel defining layer across the first electrode corresponding to the first opening and includes a first end portion corresponding to a corner of the first opening;

an entire edge of the first mask pattern portion includes four of the first mask end portions which are spaced apart from each other and four first mask connection portions connecting ends of the first mask end portions;

each of the four first mask connection portions includes at least two straight portions connected at a corner having an obtuse angle and extended between the ends of the first mask end portions; and

each of the four first mask connection portions is arranged closer to a center of the first mask pattern portion than adjacent first mask end portions.