D-Matrix Corp., a Microsoft Corp.-backed AI chip startup, raised $275 million from new investors including Qatar Investment Authority and Singapore’s EDBI, valuing the company at $2 billion.The funding round was co-led by European technology investor BullhoundCapital, Triatomic Capital, and Singapore state investor Temasek. Microsoft’s M12 venture fund and Mirae Assets, Industry Ventures and Nautilus Venture Partners put in more money after previous investments. The company, which has raised a t...