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US09227839B2 Wafer level packaged infrared (IR) focal plane array (FPA) with evanescent wave coupling 有权
晶圆级封装红外(IR)焦平面阵列(FPA)与ev逝波耦合

Wafer level packaged infrared (IR) focal plane array (FPA) with evanescent wave coupling
Abstract:
A structure for detecting electromagnetic radiation having a predetermined wavelength. The structure includes a device wafer having a sensing element disposed on a predetermined region of a surface of the device wafer responsive to the electromagnetic radiation. A cover wafer is provided having a region thereof transparent to the electromagnetic radiation for passing the electromagnetic radiation through the transparent region onto a surface of the sensing element. A bond gap spacer structure is provided for supporting the surface of the sensing element from an opposing surface of the transparent region of the cover wafer a distance less than a fraction of the predetermined wavelength when the cover wafer is bonded to the device wafer.
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