SANTA CLARA, CA – Momentum behind tablet (slate) PC shipments is growing, with a year-over-year increase of nearly 200% to 55.7 million units expected in 2011, according to DisplaySearch.

Though growth rates will slow during the forecast period, the slate PC share of the overall mobile PC market, which also includes notebooks and mini-notes, will rise to nearly 35%, or 172.4 million units, by 2014, says the firm. Total shipments of the mobile PC market are expected to reach 503.8 million units by 2014.

DisplaySearch expects 7" wide, 10" standard, and 10" wide to be the dominant screen sizes used by new products in the coming years.

Mobile PC shipment growth is expected to be in the double-digit range throughout the forecast period, peaking in 2011, at 30.4% year-over-year, and gradually declining to 17.7% growth in 2014.