[5] Estimated capacity numbers are based on calculated maximum output rather than designed capacity. The actual capacity numbers may differ depending upon equipment delivery schedules, pace of migration to more advanced process technologies, and other factors affecting production ramp-up.

CAPEX for Foundry Segment

The foundry capital expenditure for 2014 will be US$1.3 billion. Spending during the first half of 2014 in the foundry segment was US$462 million.

Third Quarter of 2014 Outlook & Guidance

Quarter-over-Quarter Guidance:

• Foundry Segment Wafer Shipments: To increase by low single-digit percentage range
• Foundry Segment ASP in US$: To remain flat
• Foundry Segment Profitability: Gross profit margin will be in the mid-20 percentage range
• Foundry Segment Capacity Utilization: Low-90% range
• 2014 CAPEX for Foundry Segment: US$1.3bn
• Guidance to New Business Segment: Revenue to be approximately NT$1.2bn and net loss attributable to UMC parent company to be approximately NT$760mn

Recent Developments / Announcements

Please visit UMC's website for further details regarding the above announcements

Conference Call / Webcast Announcement

Wednesday, July 30, 2014

A live webcast and replay of the 2Q14 results announcement will be available at www.umc.com under the "Investors / Events" section.

About UMC

UMC (NYSE: UMC, TWSE: 2303) is a leading global semiconductor foundry that provides advanced technology and manufacturing for applications spanning every major sector of the IC industry. UMC's robust foundry solutions allow chip designers to leverage the company's leading-edge processes, which include 28nm poly-SiON and gate-last High-K/Metal Gate technology, mixed signal/RFCMOS, and a wide range of specialty technologies. Production is supported through 10 wafer manufacturing facilities that include two advanced 300mm fabs; Fab 12A in Taiwan and Singapore-based Fab 12i. Fab 12A consists of Phases 1-4 which are in production for customer products down to 28nm. Construction has been completed for Phases 5&6, with future plans for Phases 7&8. The company employs over 15,000 people worldwide and has offices in Taiwan, mainland China, Europe, Japan, Korea, Singapore, and the United States. UMC can be found on the web at http://www.umc.com

Note from UMC Concerning Forward-Looking Statements

Some of the statements in the foregoing announcement are forward looking within the meaning of the U.S.  Federal Securities laws, including statements about future outsourcing, wafer capacity, technologies, business relationships and market conditions.  Investors are cautioned that actual events and results could differ materially from these statements as a result of a variety of factors, including conditions in the overall semiconductor market and economy; acceptance and demand for products from UMC; and technological and development risks. Further information regarding these and other risks is included in UMC's filings with the U.S. Securities and Exchange Commission, including its registration statements and reports on Forms F-1, F-3, F-6 and 20-F and 6-K, in each case as amended. UMC does not undertake any obligation to update any forward-looking statement as a result of new information, future events or otherwise, except as required under applicable law

Safe Harbor Statements

This release contains forward-looking statements.  These statements constitute "forward-looking" statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, and as defined in the U.S. Private Securities Litigation Reform Act of 1995.  You can identify these forward-looking statements by use of words such as "strategy," "expects," "continues," "plans," "anticipates," "believes," "will," "estimates," "intends," "projects," "goals," "targets" and other words of similar meaning.  You can also identify them by the fact that they do not relate strictly to historical or current facts.