Samsung is set to spend $4 billion (£2.5 billion) to upgrade its factory in the US which makes processors for mobile phones and tablets.
The site in Austin, Texas, is the firm's only semiconductor plant outside its home country of South Korea.
As well as making chips for Samsung smartphones, it also provides them for Apple's iPhone and iPads.
This fresh investment will allow the base to make the latest system-on-chip designs in which various technologies are fused on to the same circuit. This helps reduce manufacturing costs.
Austin is home to a technology hub nicknamed Silicon Hills, which is one of the US's biggest research and development centres outside of Silicon Valley in San Francisco.
Samsung's Austin Semiconductor president Woosung Han said of the fresh investment: "We are extremely pleased to extend our presence in Austin and reinforce Samsung's capacity for highly advanced logic products. The added production will allow to better respond to market needs."
Posted by Claire Marshall