Improved baking of photomasks by a dynamically zone-controlled process approach

Peter Dress; Thomas M. Gairing; Werner Saule; Uwe U. Dietze; Jakob Szekeresch

doi:10.1117/12.438353

5 September 2001 Improved baking of photomasks by a dynamically zone-controlled process approach

Peter Dress, Thomas M. Gairing, Werner Saule, Uwe U. Dietze, Jakob Szekeresch

Author Affiliations +

Proceedings Volume 4409, Photomask and Next-Generation Lithography Mask Technology VIII; (2001) https://doi.org/10.1117/12.438353
Event: Photomask and Next Generation Lithography Mask Technology VIII, 2001, Kanagawa, Japan

Abstract

A new type of bake system for photomasks, APB5000, has been developed, using a dynamic and multiple zone approach, to enable more precise Post Exposure Bake (PEB) and Post Coat Bake (PCB) of conventional and chemically amplified resists (CAR). The principal equipment concept and the optimization strategies are presented. The baking performance of the APB5000 is demonstrated for several surface temperatures between 90 degree(s)C and 150 degree(s)C. The temperature uniformity ranges achieved at the resist plane are better than 0.25 degree(s)C after stabilization at the final temperature and better than 1.5 degree(s)C during the ramping period. The repeatability of the bake temperature is better than +/- 0.07 degree(s)C for the setpoint temperature.

Citation Download Citation

Peter Dress, Thomas M. Gairing, Werner Saule, Uwe U. Dietze, and Jakob Szekeresch "Improved baking of photomasks by a dynamically zone-controlled process approach", Proc. SPIE 4409, Photomask and Next-Generation Lithography Mask Technology VIII, (5 September 2001); https://doi.org/10.1117/12.438353

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