Operating profit increased 54.3 percent to 12.6 trillion won from 8.1 trillion won a year earlier, more than half of which came from the firm's semiconductor business
Biden has spurred on support for the US chip industry amid a global chip shortage that has hit automakers and other industries.
He has met executives from major companies including Samsung in April and previously announced plans to invest $50 billion in semiconductor manufacturing and research.
Coronavirus-driven working from home has been boosting demand for devices powered by Samsung's chips, as well as home appliances such as TV and washing machines.
Its decision to pull out will leave its 10pc share in North America, where it is the No. 3 brand, to be gobbled up by smartphone titans Apple Inc and Samsung Electronics.
In offshore trading, the won was quoted at 1,143.1 per dollar, down 0.2% from the previous day, while in non-deliverable forward trading its one-month contract was quoted at 1,142.9.
Pandemic-fuelled buying of laptops and other personal gadgets, as well as televisions, have propped up sales of companies including Samsung Electronics and Panasonic Corp.
The trading volume during the session in the KOSPI index was 576.15 million shares. Of the total traded issues of 904, the number of advancing shares was 449.