Surface shape recognition sensor and method of manufacturing the same
First Claim
1. A surface shape recognition sensor comprising:
- a plurality of capacitive detection elements formed from lower electrodes and a deformable plate-like upper electrode made of a metal, the lower electrodes being insulated and isolated from each other and stationarily laid out on a single plane of an interlevel dielectric formed on a semiconductor substrate, and the upper electrode being laid out above the lower electrodes at a predetermined interval and having a plurality of opening portions;
a support electrode laid out around the lower electrodes while being insulated and isolated from the lower electrodes, and formed to be higher than the lower electrodes to support the upper electrode;
a protective film formed on the upper electrode to close the opening portions; and
a plurality of projections per one pixel laid out in a region of said protective film above said capacitive detection element.
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Accused Products
Abstract
A surface shape recognition sensor includes capacitive detection elements, support electrode, protective film, and projections. The detection elements are formed from lower electrodes and a deformable plate-like upper electrode made of a metal. The lower electrodes are insulated and isolated from each other and stationarily laid out on a single plane of an interlevel dielectric formed on a semiconductor substrate. The upper electrode is laid out above the lower electrodes at a predetermined interval and has opening portions. The support electrode is laid out around the lower electrodes while being insulated and isolated from the lower electrodes, and formed to be higher than the lower electrodes to support the upper electrode. The protective film is formed on the upper electrode to close the opening portions. The projections per one pixel are laid out in a region of the protective film above the capacitive detection element.
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Citations
10 Claims
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1. A surface shape recognition sensor comprising:
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a plurality of capacitive detection elements formed from lower electrodes and a deformable plate-like upper electrode made of a metal, the lower electrodes being insulated and isolated from each other and stationarily laid out on a single plane of an interlevel dielectric formed on a semiconductor substrate, and the upper electrode being laid out above the lower electrodes at a predetermined interval and having a plurality of opening portions;
a support electrode laid out around the lower electrodes while being insulated and isolated from the lower electrodes, and formed to be higher than the lower electrodes to support the upper electrode;
a protective film formed on the upper electrode to close the opening portions; and
a plurality of projections per one pixel laid out in a region of said protective film above said capacitive detection element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification