Samsung Electronics on Thursday said it expected the memory chip boom to continue in the current quarter, after reporting a record operating profit for the three months through June.
The world's biggest maker of memory chips, smartphones and television sets is widely expected to be on track to break profit records for the full year.
"Looking ahead to the third quarter, the company expects favourable semiconductor conditions to continue, although overall earnings may slightly decline quarter-on-quarter as earnings weaken for the display panel and mobile businesses," Asia's third most-valuable company by market value said in a statement.
Operating profit rose 72.7 per cent in the second quarter from the same period a year earlier, to 14.1 trillion won (S$17.2 billion), Samsung said in a regulatory filing.
That compared with 14 trillion won estimated in July.
Revenue rose 19.8 per cent to 61 trillion won, also in line with its earlier estimate.
The chip business was Samsung's top earner as profit rose to a record 8 trillion won from 2.6 trillion won in the second quarter of 2016.
Client demand for more powerful devices and supply constraints are pushing up prices of both DRAM and NAND memory chips, widening profit margins.
The mobile division, which competes with Apple, reported a profit of 4.1 trillion won, a decline from 4.3 trillion won a year prior.
Some analysts and fund managers said sales of Samsung's new flagship Galaxy S8 smartphone have not exceeded those of the S7 by as much as the market had expected.
But Koh Dong-jin, head of the firm's mobile communications business, has said cumulative sales of the S8 and S8+ handsets from April is 15 per cent higher than those of its predecessor.
The record earnings come as the firm's Vice Chairman Jay Y. Lee is in detention while on trial for his alleged role in a corruption scandal involving former president Park Geun-hye. He has denied wrongdoing.
The lower court ruling is widely expected to come before Lee's current detention period ends on August 27, a Seoul court spokesman said.
The company on Thursday also announced a share buyback of 1.7 trillion won worth of common shares, and the cancellation of 2 trillion won worth of its own shares.
Samsung Electronics shares were up 1 per cent soon after the earnings release, while the Kospi benchmark share price index was up 0.3 per cent.