US 12,446,351 B2
Substrate for solar cell, solar cell, and solar cell manufacturing method
JungBae Kim, Gwangju-si (KR); JunYoung Kang, Gwangju-si (KR); HyangJu Mun, Gwangju-si (KR); SeonKi Min, Gwangju-si (KR); JeongHo Seo, Gwangju-si (KR); WonSuk Shin, Gwangju-si (KR); HyunKyo Shin, Gwangju-si (KR); YoungTae Yoon, Gwangju-si (KR); KyoungJin Lim, Gwangju-si (KR); and Chul Joo Hwang, Gwangju-si (KR)
Assigned to JUSUNG ENGINEERING CO., LTD., (KR)
Filed by JUSUNG ENGINEERING CO., LTD., Gwangju-si (KR)
Filed on Apr. 4, 2024, as Appl. No. 18/627,348.
Application 18/627,348 is a division of application No. 17/438,415, granted, now 12,062,733, previously published as PCT/KR2020/004683, filed on Apr. 7, 2020.
Claims priority of application No. 10-2019-0065829 (KR), filed on Jun. 4, 2019; and application No. 10-2019-0120384 (KR), filed on Sep. 30, 2019.
Prior Publication US 2024/0250202 A1, Jul. 25, 2024
Int. Cl. H10F 71/00 (2025.01); H10F 19/33 (2025.01)
CPC H10F 71/1395 (2025.01) [H10F 19/33 (2025.01)] 6 Claims
OG exemplary drawing
 
1. A solar cell comprising:
a substrate having a conductive polarity; and
a first thin film layer formed on the substrate,
wherein
a substrate division part for dividing the substrate into a plurality of unit cells is formed at one surface of the substrate,
the substrate division part is formed so that a size thereof is progressively reduced in a downward direction, and
the first thin film layer comprises a first division member inserted into the substrate division part,
wherein each of the plurality of unit cells comprises:
a cell top surface disposed in an upward direction;
a cell cross-sectional groove formed in the cell top surface;
a first cross-sectional surface disposed to face the cell cross-sectional groove; and
a second cross-sectional surface connected to each of the first cross-sectional surface and the cell top surface, and
a third cross-sectional surface connected to each of the first cross-sectional surface and a cell bottom surface,
wherein a first corner is formed at a portion at which the first cross-sectional surface is connected to the second cross-sectional surface,
wherein a second corner is formed at a portion at which the second cross-sectional surface is connected to the cell top surface,
wherein a third corner is formed at a portion at which the first cross-sectional surface and the third cross-sectional surface, and
wherein a fourth corner is formed at a portion at which the third cross-sectional surface and the cell bottom surface.