"The second quarter proved better than forecast overall, with the U.S., EMEA, and Canada markets recording solid year-over-year results. However, IDC expects the global monitor market will continue to decline at rates around 3% year over year from 2018 through 2020," said Maura Fitzgerald, senior research analyst, Worldwide Trackers.

IDC currently forecasts 118 million PC monitor units will be shipped for the full year 2016 and expects to see a year-over-year decline of 12.7% in worldwide shipments to 26.7 million units in the second quarter of 2017.

By 2020, worldwide shipments are expected to be less than 100 million units as the adoption of mobile devices at lower price points is expected to continue.

IDC also noted that curved monitors continue to be on the rise, with 1.9% market share in 2Q16. This represents year-over-year growth of 221%.

In addition, 21.5-inches wide and 19.5-inches wide segments continue to dominate the worldwide market, with 22.0% and 12.2% market share respectively in 2Q16. Of the top 10 screen sizes, 23.8-inches wide and 31.5-inches wide saw the largest year-over-year growth, posting 100.1% and 76.8%, respectively, in 2Q16.

Monitors with TV tuners are expected to have 5.3% market share in 2Q17, up from 4.8% in 2Q16, led by LG and Samsung with a combined market share of 99.0% in this category.