US 12,217,634 B2
Release film and hole inspection method using the same
Bugyoon Yoo, Hwaseong-si (KR); Joonhyuk Jang, Seoul (KR); Hoseung Kang, Anyang-si (KR); Minseop Kim, Cheonan-si (KR); Yunjae Kim, Cheonan-si (KR); and Munsik Ham, Cheonan-si (KR)
Assigned to Samsung Display Co., Ltd., Yongin-si (KR)
Filed by Samsung Display Co., Ltd., Yongin-si (KR)
Filed on May 18, 2021, as Appl. No. 17/303,022.
Claims priority of application No. 10-2020-0103868 (KR), filed on Aug. 19, 2020.
Prior Publication US 2022/0058990 A1, Feb. 24, 2022
Int. Cl. G09F 9/30 (2006.01); H10K 50/844 (2023.01); H10K 71/00 (2023.01); H10K 77/10 (2023.01); H10K 102/00 (2023.01)
CPC G09F 9/301 (2013.01) [H10K 50/844 (2023.02); H10K 71/00 (2023.02); H10K 77/111 (2023.02); H10K 2102/311 (2023.02)] 16 Claims
OG exemplary drawing
 
1. A release film comprising:
a first release film; and
a second release film below the first release film,
wherein the second release film comprises:
a first sub release film below the first release film; and
a second sub release film below the first sub release film and comprising a first portion and a second portion around the first portion at orthogonal sides of the first portion,
wherein the first portion is attached to and detached from the first sub release film, and
wherein the orthogonal sides of the first portion surround a hole in a plan view.