According to foreign media reports, Google Vice President Clay Bavor revealed that Google has partnered with "one of the leading OLED manufacturers" to carry out a secret development project for high-end VR displays. It aims to develop an OLED display with 20 million pixels per eye.
This number represents a fairly high resolution, usually a 4K display has 8.3 million pixels, which means that the number of pixels can reach 2.5 times 4K. Its display density (depending on the panel size, here assumed to be 3.5 inches) is approximately 1800 PPI.
In May 2016, Samsung demonstrated a 5.5-inch resolution 3840×2160 display with a pixel density of 806 PPI. Reported that Samsung will produce 1200PPI AMOLED screen in March 2017, and the company's goal is to reach 1500PPI.
In November 2016, Sunic Systems announced that it has developed an FOLED-based AMOLED manufacturing process that enables relatively high density planar source evaporation. The 100μm mask introduced in November can reach 1500PPI. This is probably the system Samsung is testing. Sunic said that the technology can eventually achieve 2250PPI, which is enough to meet Google's 20Mp goal.
Therefore, the 1500PPI is very likely. And this so-called "leading OLED manufacturer" is likely to be Samsung Display (SDC) or LG Display (LGD). Last month, it was reported that Google hopes to invest 872 million U.S. dollars in LGD to ensure flexible OLED production.
Google also announced that it is working with Sharp to develop a VR LCD monitor aimed at introducing a liquid crystal display with fast response time and high resolution. All current high-end VR headsets use OLEDs because of their fast response time.
Guangzhou Bolei Electronic Technology Co., Ltd. , https://www.nzpal.com