The Meaning of ‘Flexpai’, the World’s First Foldable Mobile Phone

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Reporter : Daejeong Yoon

Having a Gen5.5 7.5K line in Shenzhen, Royole is known as a head mount display (HMD) company rather than a display company. After completing installation of equipment in the second quarter of this year, Royole has been developing panels for the target of 7.8-inch tablet PC.
RoYole has two peculiarities in OLED field. One is the world’s first mass-production of foldable OLEDs and the other is the first use of oxide TFTs in mobile displays.

Source: Royole Homepage

Because plastic film is used for the cover window of foldable phone, the display of out folding foldable phone is very likely to be damaged due to the external environment.

In fact, Samsung Display already developed a QHD resolution outfolding foldable OLED with a bending radius of 5 mm a few years ago, but the company plans to mass produce infolding foldable OLED to minimize damage to the screen from December.

Since Royole has not yet produced products with oxide TFT, the company has not achieved complete TFT reliability. Because of very low yield for the time, the available supply volume is expected to be limited even if the sales begin.