 Although offering significant advantages, deep trench technology is technically difficult to manufacture and has led to slippage of Qimonda's technology shrink roadmap in comparison to many of its rivals in recent years.In 2008, Qimonda announced the development of its Buried Wordline Technology.Retaining many of the advantages of Deep Trench technology, in theory it simplifies the manufacturing process and the time provided Qimonda with a competitive technology shrink roadmap.