Manufacturing Bits: Dec. 8

Progress report on EUV resists The development of resists is a key part of extreme ultraviolet (EUV) lithography. “EUV resists are production ready,” said Kevin Cummings, Sematech’s director of lithography. “However, through Sematech’s work with the resist suppliers, we have observed a deceleration in the rate of improvements. As a result, Sematech is working not only with the re... » read more

Challenges In 3D Resists

3D integration straddles the line between CMOS fabs and packaging and assembly houses. Depending on the structure being fabricated, the most appropriate process might be more “CMOS-like” or more “package-like.” For example, in CMOS fabs lithography means spin-on photoresist, exposed by a high precision stepper. Inherent in this approach is an assumption that the wafer surface is flat... » read more

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