Samsung still leads in LCD HDTV shipments, with Vizio close behind. LG moves up, while Sharp dips further.

Samsung continues to be the leading LCD HDTV shipper in the United States, claiming 19.7 percent of the market in the second quarter of 2010, according to market research firm iSuppli. The former leader, Vizio, is closing the gap, while Sony remains a distant third.

Fourth place now belongs to LG, which jumps ahead of Sanyo with an 8.8 percent market share. Toshiba suffers a notable drop of 1.4 percent, but still manages to hold on to sixth place. Seventh place Panasonic has slid from its 5 percent market share a year ago, though its plasma sales aren't counted in these numbers. Despite a big marketing campaign for its Quattron sets, Sharp's sales continue to erode -- it now has an anemic 2.4 percent of LCD shipments.

Overall, LCD shipments were up 12.8 percent from Q1, but the weakening economic recovery could halt an increase in the current quarter. Two trends that will probably continue: buyers gravitating more toward LED-backlit sets (a 5-percent jump from the first quarter) and more new HDTVs connected to the Internet (roughly 32 percent overall).