Digipack

Digipacks usually consist of a gate fold or book style paperboard or card outer binder with one or more plastic trays which hold a CD or DVD that's attached to the inside. The MPAC Group first owned the digipak trademark. Atlas Holdings owned rights to the digipak from 2010. CD Digipacks were first seen as limited edition products but improvements in CD production and CD packaging and printing techniques meant they were available at much lower prices and produced on a larger scale. The most common CD digipacks is the 4 panel digipack which opens like a book. 6 panel CD digipack's are also popular, providing a larger area for CD pictures and text about the CD. 8 panel and 10 panel CD digipack's are also on the market. 
Here is an image of a digipak: