Construction of saw devices
1 Assignment
0 Petitions
Accused Products
Abstract
A silicon or quartz wafer for forming a SAW device is the subject of grinding and lapping operation to form its basic shape. The opposing surfaces, as well as the edges extending therebetween, are the polished to reduce the number and size of defects in the surfaces. Metal is deposited onto one of the opposing surfaces which, in use, will be under compression, to form electronic components thereon, and a multi-metallic coating having an outer layer formed of gold is applied to the other surface to form a solder pad by means of which the wafer may be fastened to a shaft or the like by soldering. Martensitic stainless steel is used as a mount, saddle or housing for the SAW substrate.
20 Citations
26 Claims
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1-16. -16. (canceled)
- 17. An apparatus comprising a packaging for a SAW substrate at least partially formed of martensitic stainless steel.
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22. A device for protecting a substrate in a non-environmentally-isolating package, comprising:
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a sensor including a SAW substrate; and
a martensitic stainless steel mount coupled to said SAW substrate, wherein said martensitic stainless steel mount possesses a high elastic range so that said sensor is able to monitor the environment through said mount. - View Dependent Claims (23, 24, 25, 26)
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Specification