GT Advanced Technologies to Showcase Sapphire Cover Screen Material at 2013 SID Display Week Show May 20-24 in Vancouver, BC

GT Advanced Technologies to Showcase Sapphire Cover Screen Material at 2013
SID Display Week Show May 20-24 in Vancouver, BC

Company to Discuss Preliminary Results of Sapphire Mechanical Testing

NASHUA, N.H., May 20, 2013 (GLOBE NEWSWIRE) -- GT Advanced Technologies
(Nasdaq:GTAT) is participating in the 2013 Society for Information Display's
Display Week event May 20-24 in Vancouver, BC. The company will be showcasing
sapphire cover screens for smartphones and other mobile devices including
touch panel demonstrations with sapphire screens developed by Atmel and Ocular
that highlight sapphire touch sensitivity when integrated into a touch module.
In addition, the company will be delivering presentations during Monday's
Business and Touch Gesture Motion conferences. The presentations will
highlight results of recent sapphire material testing and provide an update on
the progress being made in the development of an optimized fabrication value
chain for delivering low-cost and high volume sapphire screen material.

GT is developing and investing in a number of innovative technologies that,
when commercialized, will help to lower the cost of sapphire cover screens to
levels that are competitive with reinforced glass material. GT continues to
advance its ASF® sapphire growth furnace for the production of high volume,
high quality sapphire material. In addition, the company's recently announced
acquisition of Thermal Technology broadens its sapphire equipment offerings
with a sapphire annealing furnace that the company believes will be important
in the manufacturing of sapphire cover screens. GT is also developing its
Hyperion implant technology, which it expects could significantly lower the
cost of sapphire cover screens by delivering thin, exfoliated sapphire
substrates in high volumes.

GT is completing a series of third-party tests on sapphire cover screens to
demonstrate how sapphire material compares with other glass cover solutions.
Preliminary results of these tests will be presented in the Touch Gesture
Motion Conference Monday, May 20. The presentation will be available on GT's
web site at [].

About GT Advanced Technologies Inc.

GT Advanced Technologies Inc. is a diversified technology company with
innovative crystal growth equipment and solutions for the global solar, LED
and electronics industries. Our products accelerate the adoption of new
advanced materials that improve performance and lower the cost of
manufacturing. For additional information about GT Advanced Technologies,
please visit

Forward-Looking Statements

Certain of the information in this press release relate to the Company's
future expectations, plans and prospects for its business and industry that
constitute "forward-looking statements" for the purposes of the safe-harbor
provisions of the Private Securities Litigation Reform Act of 1995, including
but not limited to: the Company's ability to successfully integrate Thermal
Technology products into its business operation; the Company's ability to
successfully develop Thermal Technology annealing furnace for use in sapphire
cover screen manufacturing; the Company's ability to successfully develop and
deliver an annealing furnace; the company's ability to develop and
commercialize its Hyperion implant technology; and the Company's ability to
market its sapphire material to new market segments outside of its traditional
LED and optical application segments. These forward-looking statements are not
a guarantee of performance and are subject to a number of uncertainties and
other factors, many of which are outside the Company's control, which could
cause actual events to differ materially from those expressed or implied by
the statements. Other factors that may cause actual events to differ
materially from those expressed or implied by our forward-looking statements
include the impact of continued decreased demand and/or excess capacity in the
markets for the output of our solar and sapphire equipment, general economic
conditions and the tightening credit market having an adverse impact on demand
for the Company's products, the possibility that changes in government
incentives may reduce demand for solar products, which would, in turn, reduce
demand for our equipment, technological changes could render existing products
or technologies obsolete, the Company may be unable to protect its
intellectual property rights, competition from other manufacturers may
increase, exchange rate fluctuations and conditions in the credit markets and
economy may reduce demand for the Company's products and various other risks
as outlined in GT Advanced Technologies Inc.'s filings with the Securities and
Exchange Commission, including the statements under the heading "Risk Factors"
in the company's annual report on Form 10-K for the transition period ended
December 31, 2012. Statements in this press release should be evaluated in
light of these important factors. The statements in this press release
represent GT Advanced Technologies Inc.'s expectations and beliefs as of the
date of this press release. GT Advanced Technologies Inc. anticipates that
subsequent events and developments may cause these expectations and beliefs to
change. GT Advanced Technologies Inc. is under no obligation to, and expressly
disclaims any such obligation to, update or alter its forward-looking
statements, whether as a result of new information, future events, or

         Jeff Nestel-Patt
         Ryan Flaim

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