PPI - Page 6

Ireland-based micro-transfer printing developer X-Celeprint demonstrated a 5.1" Micro-LED display in a private demo room at SID Displayweek.

X-Celeprint's display has a low resolution - the pixel density is 70 PPI, which means the resolution is around 300x200. The display uses micro ICs to control and compensate each pixel (this is not a TFT display). X-Celeprint says it intends to spin off a new display-focused company within the next 12 months.

AUO demonstrated a micro-LED display, which it says is the world's highest resolution full-color TFT micro-LED.

The 8" panel features a resolution of 1280x480 (169 PPI). The micro-LEDs use blue LED chips with color conversion, on an LTPS backplane. AUO did not disclose any roadmap to commercialize this technology.

Shanghai-based JBD is developing micro-LED based Microdisplays for near-eye and image projection applications, using the company's proprietary hybrid monolithic integration technology. JBD received a $10 million investment and developed a 5,000 PPI micro-LED array, with plans to reach 10,000 PPI.

JBD is already offering VGA monochrome (red, green and blue) micro-LED microdisplays. LEDs Inside posted an interesting interview with JBD's CEO and CTO that discuss the company's technology and its goal for 2018 and 2019.

Taiwan's Innolux demonstrated a new prototype mini-LED display. The 10.1" panel features a resolution of 1540x720 (168 PPI) and it seems to be a monochrome white display. Innolux hopes to commercialize such displays by 2020.

Innolux says that this type is very suitable for automotive applications - as it has an almost infinite contrast (similar to OLED displays) and it can also work in the demanding temperatures required by the automotive industry. Innolux hopes that such mini-LED displays can find a market and be a bridge before the company can develop micro-LED displays with higher densities and increased brightness.