Patent ID: 11927879
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 13:
14. The method of claim 1,
wherein the first photomask comprises:
a mask substrate having a first surface, and a second surface opposing the first surface;
a mask layout region on the first surface of the mask substrate; and
wherein the mask layout region comprises the N mask chip regions and the first mask scribe lane region,
wherein the first mask scribe lane region has a first side, and a second side opposing the first side,
wherein the first mask scribe lane region comprises first mask alignment patterns, and
wherein the first mask alignment patterns comprise:
a first mask alignment layout pattern adjacent to a central area on the first side; and
a second mask alignment layout pattern adjacent to a central area on the second side.