Tablet makers shipped almost 73 million units in 2011, accounting for 25.2 percent of the global mobile PC market.
According to new data released by the Displaysearch division of market research firm NDP, 72.7 million tablet devices were shipped in 2011, representing a staggering 252 percent increase over 2010, The Inquirer reports.
NDP said that tablet devices with 250ppi to 300ppi screens will account for 25 percent of the tablet PC market next year.
"In the short term, tablet PCs will be the growth accelerate in the overall mobile PC market, as macroeconomic factors and hard drive motor supply issues impact the market for notebook PCs," said Richard Shim, senior analyst at NPD Displaysearch.
"In the longer term, notebook PC shipments will bounce back as ASPs [average selling prices] continue to decline, Windows 8 launches, and new form factors, such as ultrabooks, continue to emerge," he added.
The company said that Ultrabooks will impress consumers with their slim design and advanced features like instant on, but will fail to make it big in the market for the next two years.