Taiwanese smartphone maker HTC plans to bring out phones based on Microsoft's new Mango Windows phone software, which was launched on Tuesday, HTC Chief Executive Peter Chou said on Wednesday.

Microsoft hopes a host of new features on Mango, a stepping stone to a full Windows phone software update due next year, will help it close the gap on smartphones leaders Google and Apple.

"We have some Windows Mango phones," Chou told Reuters in an interview on the fringes of an Internet conference hosted by President Nicolas Sarkozy in Paris. "We are very committed to Windows phone products."

Chou, who is known for killing off products he is not satisfied with at a late stage of development, declined to say when the first HTC Mango phones might appear.

Taiwan-based HTC has seen runaway success with smartphones based on Google's Android operating system, a rival to Microsoft's Windows phone. But it also has a long-standing partnership with Microsoft, which Chou said would not change.

Last month, HTC said it expected its revenue to double in the current quarter.

Chou said on Wednesday: "Q2 looks pretty good."

IT research firm Gartner expects the smartphone market to grow 58 percent in 2011 and 35 percent in 2012.