Electronic Billboard Technology Announces Continuation Of McDonald's Test

Austin, Texas – June 18, 2001 – Electronic Billboard Technology, Inc. (EBT), a subsidiary of SI Diamond Technology, Inc. (OTC BB: SIDT) today announced a continuation of its test with a major Quick Service Restaurant chain (see press release February 27, 2001). Based on successful results, a pilot program with McDonald's (NYSE: MCD) will continue through September 2001.

Under the terms of the agreement, McDonald's may at its discretion enter into a definitive agreement for a larger scale rollout.

"We're very excited that McDonald's is experiencing positive sales results using our E-WindowTM and E-BannerTM products," said Marc Eller, Chairman and CEO of SI Diamond Technology. "We believe this pilot program will continue to benefit McDonald's by increasing sales and attracting additional customer visits at the locations using our point-of-purchase vehicles."

"Overall, there is a paradigm shift of advertising and promotional dollars being spent from the more traditional venues such as television and radio to point-of-purchase (POP) advertising. EBT provides POP advertising vehicles that are measurable and proving to be very effective for many retailers," continued Eller.

Safe Harbor Statement

This press release contains forward-looking information within the meaning of Section 27A of the Securities Act of 1933, and Section 21E of the Securities Act of 1934, and is subject to the safe harbor created by those sections. The Company's actual results could differ materially from those projected in the forward-looking information. Future results may be impacted by risk factors listed from time to time in SIDT's SEC reports. SI Diamond Technology, Inc. disclaims any intent or obligation to update forward-looking information.

SI Diamond Technology is a holding company consisting of three operating subsidiaries. The wholly owned Field Emission Picture Element Technology, Inc. (FEPET) subsidiary is developing products for applications utilizing SIDT's proprietary field emission technology. The wholly owned Electronic Billboard Technology, Inc. (EBT) subsidiary is geared toward the commercialization of electronic digitized sign technology. Sign Builders of America, Inc. (SBOA), a wholly owned subsidiary of EBT is a manufacturer of high quality signage. SI Diamond Technology's website is www.sidiamond.com.

Company Contact:
Doug Baker
Applied Nanotech Holdings, Inc.
248.391.0612
dbaker(at)appliednanotech.net

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