https://finance.yahoo.com/news/apple-secretly-developing-own-screens-010000955.html

The screens are far more difficult to produce than OLED displays, and the company almost killed the project a year or so ago, the people say. Engineers have since been making progress and the technology is now at an advanced stage, they say, though consumers will probably have to wait a few years before seeing the results.

The ambitious undertaking is the latest example of Apple bringing the design of key components in-house. The company has designed chips powering its mobile devices for several years. Its move into displays has the long-term potential to hurt a range of suppliers, from screen makers like Samsung Electronics Co., Japan Display Inc., Sharp Corp. and LG Display Co. to companies like Synaptics Inc. that produce chip-screen interfaces. It may also hurt Universal Display Corp., a leading developer of OLED technology.