EV: Could you briefly describe the demos and prototypes you recently showed at CES? How do they compare with LCD and OLED in term of performance?
FD & AN: The working displays presented at CES were:
- a 1.5” diagonal RGB smart watch display with 20 micron microLEDs at 264ppi on a LTPS glass backplane. This display produces 4000 nits brightness, has infinite contrast, 120Hz refresh rate, 121% of DCI-P3 color gamut and uses less than 1W of power.
- a 0.7” diagonal RGB display for AR glasses and HUD applications with 10 micron microLEDs at 1000ppi on a CMOS backplane. This display produces 100,000 nits of brightness, has infinite contrast, 120% DCI-P3 color gamut, 120 Hz refresh rate and uses 3.25W power.
The best OLED display can produce a brightness of 1000 nits, but the organic LEDs degrade rapidly because they cannot withstand the higher currents required. An equivalent LCD display would have to use over ~85W of power, which is obviously not practical for any wearable display. An LCD display also does not offer the same color gamut, contrast or refresh rate. To summarize: glō microLED displays offer 10x more brightness and 5x better power efficiency with equal or better color quality than the best OLED
EV: Are those displays using 2D chips or your nanowire technology?
FD & AN: glō uses its unique epitaxy technology developed over the many years of nanowire work in all its microLEDs. The technology can be used to make both LED types, depending on the application. This month in Photonics West, our 100,000 nits HUD demo showcases our latest 2D LEDs, while the smartwatch display showcases the same technology in our latest 1D rendition.