Integrated capacitance sensing module and associated system
Abstract:
An integrated capacitance sensing module includes a silicon substrate, a first and a second and a third interlayer dielectric layers, plural conducting layers, a shielding layer, a lower and a upper sensing electrode layers, a protective coating layer. An embedded memory and a sensing circuit are constructed in the silicon substrate. The first interlayer dielectric layer covers the silicon substrate. The plural conducting layers are formed over the first interlayer dielectric layer. The shielding layer is formed over the plural conducting layers. The second interlayer dielectric layer covers the shielding layer. The lower sensing electrode layer is formed over the second interlayer dielectric layer. The third interlayer dielectric layer is formed over the lower sensing electrode layer. The upper sensing electrode layer is formed over the third interlayer dielectric layer. The protective coating layer covers the upper sensing electrode layer.
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