WASHINGTON — Retail sales of consumer electronics and appliances rose 3% year-over-year in the May quarter, up from 1.5% sequentially, according to the US Census Bureau.

Furthermore, North American TV shipments rose 4% during the first quarter, says research firm DisplaySearch, with LCD shipments leading the way, rising 110%.

The boosts, coupled with a 19% spike in US notebook PC unit sales during the quarter, have led some analysts to suggest the US tax rebate is having an effect on consumer buying patterns.