×

Structure and method for motion sensor

  • US 9,365,416 B2
  • Filed: 03/29/2012
  • Issued: 06/14/2016
  • Est. Priority Date: 08/15/2011
  • Status: Active Grant
First Claim
Patent Images

1. A sensor structure, comprising:

  • a first substrate having an integrated circuit formed thereon;

    a second substrate bonded to the first substrate from a first surface, wherein the second substrate comprises a sensor formed thereon; and

    a third substrate bonded to a second surface of the second substrate using a bonding layer, wherein the third substrate includes a recessed region aligned with the sensor,wherein;

    the first substrate includes a silicon oxide layer;

    the second substrate includes silicon adjacent to the first surface and the second substrate is bonded to the first substrate between the silicon and silicon oxide layer by fusion bonding;

    the second substrate includes a trench adjacent to the second surface that is filled, at least in part, with material from the bonding layer.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×