Sharp is reportedly set to ramp up production of LCD screens next month in time for an autumn launch of the next iPhone, most likely the iPhone 5S.
Apple is widely tipped to be planning to launch an iPhone 5S upgrade to the existing iPhone later this year, possibly followed by a cheaper iPhone later in the year or in 2014.
Sharp already supplies panels to Apple, Samsung and others, while LG Display is the world's laregest suppllier of screens of all sizes, from smartphones to TVs.
Japan Display formed at the back end of 2011 in an effort to give smaller screen-manufacturers greater collective clout, with the aim of expanding its production of small-sized screens for portable devices. The group bought an LCD factory from Panasonic for just that purpose, no less.
Whether it's the iPhone 5S or iPhone 6, any new iPhone will almost certainly have the same size screen as the iPhone 5 but run iOS 7, which will almost certainly be unveiled at the Apple WWDC in June.
Familiar Apple upgrades to the processor and camera are likely, too, while rumours of features such as a fingerprint sensor and an Apple streaming music service, 'iRadio', persist.
The Apple Worldwide Developers Conference (WWDC) will run from June 10th to 14th, so that looks set to be the next date for concrete iPhone news.
Written by Joe Cox