VR and AR devices need very high PPI because the screen is very close to the eyes, so the human eye cannot see the "big pixel fruit". But in fact, the current top VR devices are faced with insufficient screen PPI and performance bottlenecks. Even the newly released HTC Vive Pro has just increased its resolution from 2160x1200 to 2880x1600 (actually up to 78%).

HTC vive Pro

However, this figure does not compare well with the previous highest PPI record on mobile phones. In Sony Xperia series mobile phones, 4K resolution is inserted in 5.5 inches, and the PPI is as high as 806.

But in fact, the PPI arms race continues. In November 2016, JDI released a 3-inch screen with 651PPI. Then in February 2017, the American Optical Society announced that the new generation of blue liquid crystal technology had been successfully developed and was approaching mass production. It claimed that the PPI (number of pixels per inch of area) of the panel could reach 1500.

In mid March this year, it was revealed that Google would release a VR dedicated OLED screen jointly developed with LG in May. It is said that this 4.3 exposed screen has a total of 18 million pixels (5657 x 3182), 1443 PPI, and a 120Hz refresh rate.

On May 12, it was reported that JDI officially released a 3.25-inch, 2160x2432, PPI 1001 LCD screen. The screen material is LTPS, the response time is 2.2ms (usually 4.5ms), and the refresh rate is 120Hz. Although the parameters are not as good as those of Google and LG before, it is LCD after all, and the technical route is different. But the bad news is that this screen is scheduled to be commercially shipped in March 2019.