Talks between Samsung Electronics and Apple Computer over a possible joint investment to produce NAND flash memory chips have broken down.
The firm is the world's biggest producer of DRAM and NAND chips
"Talks didn't proceed beyond the preliminary stages," Sungin Cho, a Samsung spokeswoman told AP.
"We're not commenting on the reason that talks didn't develop."
Reports said the $3.8bn (£2.1bn) deal collapsed after news of an inquiry into the terms under which Samsung supplies NAND chips for Apple's iPod Nano.
Reports in South Korea have said that Samsung is selling the chips to Apple at half their market value, something Samsung executives deny.
Earlier in October, Samsung agreed to plead guilty to involvement in price fixing in the US and to pay a $300m fine.
This is the second largest criminal anti-trust penalty in US history, and the largest for five years.
The Korean firm is the world's biggest producer of DRAM and NAND chips.
It is also the second-biggest semiconductor maker after Intel, and one of the largest makers of liquid crystal displays along with LG Philips.