SI Diamond Technology Announces Investor Conference Call

Austin, Texas – July 18, 2001 – SI Diamond Technology, Inc. (OTC BB: SIDT) today announced a investor conference call for tomorrow, July 19, 2001 at 4:00 Eastern Time. On the call, management will discuss positive business developments as well as conduct a question and answer session.

To join the call, please dial 1-877-833-5338 in the United States, or 1-706-679-6093 internationally. The call will last approximately one hour.

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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