Browse Prior Art Database

Elastomer Coated Rib for Optical Pressure Block

IP.com Disclosure Number: IPCOM000107253D
Original Publication Date: 1992-Jan-01
Included in the Prior Art Database: 2005-Mar-21
Document File: 1 page(s) / 37K

Publishing Venue

IBM

Related People

Liutkus, J: AUTHOR [+4]

Abstract

We disclose an elastomer-coated rib consisting of a thin glass or quartz rectangle upon which is a uniform rectangular layer of elastomer. (See figure.) We also disclose the process to manufacture such an item. The elastomer-coated rib is flat, optically transparent, and is placed on the bottom of the optical pressure block.

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Elastomer Coated Rib for Optical Pressure Block

      We disclose an elastomer-coated rib consisting of a thin glass
or quartz rectangle upon which is a uniform rectangular layer of
elastomer.  (See figure.)  We also disclose the process to
manufacture such an item.  The elastomer-coated rib is flat,
optically transparent, and is placed on the bottom of the optical
pressure block.

      The optical pressure block pushes test beams down onto
corresponding test sights on a silicon wafer. An elastomer coating
applied to the rib on the bottom surface of the block will ensure
planarity of the block and top surface of the test beams.  The force
exerted on the beams will be spread evenly over all of them.

      The elastomer coating applied to the bottom of the Optical
Block is a clear and colorless silicone.

      A spinning process has been developed for the application of
the silicone to the rib.  The silicone is spun onto a glass or quartz
substrate, cured, and then diced.  This ensures an even profile of
silicone.  The silicone can be layered when spun to control
thickness.

      Disclosed anonymously.