Photomask for Semiconductor Lithography - Precision Grid Pattern Mask #3816808 (License: Personal Use)

This is a photomask-a critical tool in photolithography-used to transfer circuit patterns onto silicon wafers. The purple substrate is typically quartz or glass coated with chromium, with the white grid representing transparent areas where UV light passes through. Two registration holes ensure accurate alignment during exposure.

Used in semiconductor foundries and microelectronics labs for mask-aligner or stepper systems; matches user intent for technical documentation, procurement, or educational content on chip manufacturing.