Paper
3 July 1995 Quality control of embedded-type phase-shift mask
Yoshiro Yamada, Kazuaki Chiba, Eisei Karikawa, Hiromasa Unno, Yasutaka Kikuchi, Katsuhiro Kinemura, Masao Otaki
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Abstract
We have been developing the technology for phase shift masks since 1991 in order to supply the reticles for 64 MDRAM generation and after. We are still developing both the alternative and embedded types fori-line. The embedded type is suitable for ASIC and contact hole. Now, we are reaching an adequate supply of embedded type PSMs for practical use. Currently the embedded types is relatively popular because the burden on designing is small, the process is comparatively short, and defect repair is easier.
© (1995) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Yoshiro Yamada, Kazuaki Chiba, Eisei Karikawa, Hiromasa Unno, Yasutaka Kikuchi, Katsuhiro Kinemura, and Masao Otaki "Quality control of embedded-type phase-shift mask", Proc. SPIE 2512, Photomask and X-Ray Mask Technology II, (3 July 1995); https://doi.org/10.1117/12.212785
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KEYWORDS
Chromium

Phase shifts

Dry etching

Inspection

Photomasks

Reticles

Coating

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