Photomasks Explained (Contact and Projection): how to etch Thin Chromium Layers

In this video, the difference between contact/proximity masks and projection masks for photolithography is discussed. These masks are used  to produce MEMs and  integrated circuits. In the second half of the video, I will show how to quickly etch the chromium layer off a quartz substrate.

• #science_technology
• #contact_mask
• #proximity_mask
• #proximity_imaging
• #projection_mask
• #photolithography
• #etching_chromium
• #quartz_photomask
• #pellicle
• #etching
• #pattern