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Suppression of Airborne Radioactivity Gettering on Video Display Terminal Screens by Use of a Commercially Available Cleaning Agent

IP.com Disclosure Number: IPCOM000106792D
Original Publication Date: 1993-Dec-01
Included in the Prior Art Database: 2005-Mar-21
Document File: 2 page(s) / 39K

Publishing Venue

IBM

Related People

Ziegler, JF: AUTHOR [+2]

Abstract

Disclosed is a method for eliminating the buildup of charged airborne radioactivity on Video Display Terminal (VDT) and Television (TV) screens by applying an ungrounded coating of a commercially available vinyl protectant/ cleaner to the screen surface. It constitutes a simple and inexpensive retrofit to existing VDT's which are operated in such environments.

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Suppression of Airborne Radioactivity Gettering on Video Display Terminal Screens by Use of a Commercially Available Cleaning Agent

      Disclosed is a method for eliminating the buildup of charged
airborne radioactivity on Video Display Terminal (VDT) and Television
(TV) screens by applying an ungrounded coating of a commercially
available vinyl protectant/ cleaner to the screen surface.  It
constitutes a simple and inexpensive retrofit to existing VDT's which
are operated in such environments.

      Under certain circumstances, radioactive Radon daughters are
deposited on VDT and TV screens due to their residual negatively
charged surfaces when the screen power is off [1].  Although it has
been shown [2]  that there is no real health risk associated with
this buildup, the user may nevertheless wish to eliminate the buildup
entirely.

      Application of this material to the screen does not affect the
properties of the electrostatic field which attracts the
radioactivity.  However, it modifies the properties of the surface so
that the radioactivity does not stick to the screen.  It is believed
that the active ingredient is a common silicone oil, such as
polydimethyl siloxane, stabilized with morpholine.  The coating has
the side effect of inhibiting the visible buildup of dust on the
screen.  It also suppresses the anti-glare properties of the screen,
which may improve readability for some high-resolution graphics
applications.

      A very small...