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Up: 8.2 Photoresist Exposure and
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Figure 8.27:
Cross sections of the resist profiles of the contact holes printed
over a planar silicon substrate (upper: coherent, middle: circular,
lower: quadrupole; left: best focus, right: 1 m defocus above).
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Figure 8.28:
Cross sections of the resist profiles of the contact holes printed
over a dielectric oxide step (upper: coherent, middle: circular,
lower: quadrupole; left: best focus, right: 1 m defocus above).
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Figure 8.29:
Cross sections of the resist profiles of the contact holes printed
over a reflective a-silicon step (upper: coherent, middle: circular,
lower: quadrupole; left: best focus, right: 1 m defocus above).
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Heinrich Kirchauer, Institute for Microelectronics, TU Vienna
1998-04-17