Magnachip Schedules First Quarter 2011 Earnings Release and Conference Call

SEOUL, South Korea and CUPERTINO, Calif., April 5, 2011 — MagnaChip Semiconductor Corporation (“MagnaChip Semiconductor”) (NYSE: MX) will hold a conference call Wednesday, April 27, 2011 at 3 p.m. PDT to discuss the Company’s first quarter 2011 financial results. Participating in the call will be Sang Park, MagnaChip Chairman and CEO and Margaret Sakai, Executive Vice President and CFO. The earnings release will be issued after the market closes that day.

The conference call will be webcast live and is also available by dialing 1-866-776-2061 in the U.S. or 1-706-679-0298 for all other locations. The conference ID number is 57757395 and participants are encouraged to initiate their calls at least 10 minutes in advance of the 3 p.m. PDT start time to ensure a timely connection. The webcast and earnings release will be accessible at investors.magnachip.com.

A replay of the conference call will be available the same day and will run for 72 hours. The replay access numbers are 1-800-642-1687 and 1-706-645-9291. The access code is 57757395.

About MagnaChip Semiconductor

Headquartered in South Korea, MagnaChip Semiconductor is a Korea-based designer and manufacturer of analog and mixed-signal semiconductor products for high volume consumer applications. MagnaChip Semiconductor believes it has one of the broadest and deepest range of analog and mixed-signal semiconductor platforms in the industry, supported by its 30-year operating history, large portfolio of registered and pending patents and extensive engineering and manufacturing process expertise. For more information, please visit www.magnachip.com.