发明名称 |
Wafer level packaged infrared (IR) focal plane array (FPA) with evanescent wave coupling |
摘要 |
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. |
申请公布号 |
US9227839(B2) |
申请公布日期 |
2016.01.05 |
申请号 |
US201414270945 |
申请日期 |
2014.05.06 |
申请人 |
RAYTHEON COMPANY |
发明人 |
Gooch Roland W.;Black Stephen H.;Kocian Thomas A.;Kennedy Adam M.;Diep Buu Q. |
分类号 |
H01L23/02;B81B7/00;H01L37/00 |
主分类号 |
H01L23/02 |
代理机构 |
Daly, Crowley, Mofford & Durkee, LLP |
代理人 |
Daly, Crowley, Mofford & Durkee, LLP |
主权项 |
1. A structure for detecting electromagnetic radiation having a predetermined wavelength, comprising: 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 having a region thereof transparent to the electromagnetic radiation for passing the electromagnetic radiation through the transparent region onto a r:mrfoce of the sensing element; a bond gap spacer structure for supporting the surface of the sensing element from an opposing surface of the transparent region of the cover wafer a predetermined distance less than a fraction of the predetermined wavelength when the cover wafer is bonded to the device wafer, wherein the bond gap spacer forms a gap between the surface of the sensing element and the opposing surface of the transparent region of the cover wafer to enable evanescent wave coupling across the gap. |
地址 |
Waltham MA US |