The availability of the iPad mini with Retina display may not be enough to meet market demand because Sharp's supply of 7.9-inch Retina display panels based on its Oxide TFT process is seeing low yield rates, according to sources with Taiwan's supply chain.

　　LG Display (LGD) is another supplier 7.9-inch Retina panels, the sources noted. LGD uses a-Si process and accounts for about 60% of the panels supplied for use in Apple's iPad mini with Retina display, with Sharp accounting for 40%, the sources said.

　　AU Optronics (AUO) and Innolux have tried to obtain orders for 7.9-inch Retina panels from Apple but failed, the sources added.

　　LGD also supplies 60% of 9.7-inch Retina panels for use in the iPad Air, with the remaining 40% supplied by Samsung Display, the sources indicated.