US 11,758,650 B2
Flexible printed circuit board and electronic device including the same
Dae Jung Byun, Suwon-si (KR); Jung Soo Kim, Suwon-si (KR); Sang Hyun Sim, Suwon-si (KR); Chang Min Ha, Suwon-si (KR); and Jin Won Lee, Suwon-si (KR)
Assigned to SAMSUNG ELECTRO-MECHANICS CO., LTD., Suwon-si (KR)
Filed by SAMSUNG ELECTRO-MECHANICS CO., LTD., Suwon-si (KR)
Filed on Apr. 30, 2021, as Appl. No. 17/246,271.
Claims priority of application No. 10-2020-0160268 (KR), filed on Nov. 25, 2020.
Prior Publication US 2022/0167496 A1, May 26, 2022
Int. Cl. H05K 1/18 (2006.01); H05K 1/02 (2006.01); G06F 1/16 (2006.01)
CPC H05K 1/0281 (2013.01) [G06F 1/1652 (2013.01); H05K 1/189 (2013.01); H05K 2201/10128 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A flexible printed circuit board, comprising:
a base film;
a circuit pattern disposed on one surface of the base film; and
a coverlay film covering the circuit pattern,
wherein the base film is divided into a flexible area and a rigid area,
the circuit pattern of the flexible area comprises a portion thinner than a portion of the circuit pattern of the rigid area,
the circuit pattern of the flexible area includes a plurality of grooves spaced apart from one another at regular intervals, such that the coverlay film disposed on the circuit pattern of the flexible area has a plurality of stepped portions on one surface of the coverlay film, and
one of the plurality of grooves is formed in only a part of the circuit pattern of the flexible area in a thickness direction of the circuit pattern.