1. Introduction
1.1 Industry- Semiconductor

Semiconductor is a material that originally doesn`t conduct electricity but it conducts electricity when we apply heat or some impurity. So, it can be handled easily rather than conductor so that it is a critical part of almost every IT product.
In detail, Semiconductor can be classified by two big parts, “Memory semiconductor” and “Non-Memory semiconductor”. And Memory semiconductor is divided into “D-ram” and “NAND-flash”. D-ram is used in computer mainboard, and NAND-flash is used in cell-phone or MP3 player.

Thanks to this easy using feature and wide variety of using scope, the size of market is $298 billion big in 2010. In this huge industry, 23% of that market is a “Memory semiconductor” market, which is $70 billion. It is relatively small comparing with “Non-memory” but it is still a big number.

The firm of South Korea is the strongest firm in this Memory semiconductor part. Especially in D-ram part, Korean firms show overwhelming results. As you can see in below chart, market share in D-ram market in 2011, Q3, Samsung and Hynix have 63% of the world market share in D-ram market.