Last week we reported that Ennostar Incorporation (formed by a merger of Taiwan's Epistar and Lextar in 2020) demonstrated a 10.6" transparent microLED display at Touch Taiwan 2021. We now have more information on Lextar's new display prototype.
This square display features a 640x640 resolution (85 PPI) and uses LED chips that are <50 um in size. This is a TFT-based display (LTPS? we're not sure) that achieves a transparency of 61%, a brightness of 3,000 nits (peak value) and a 120Hz refresh rate.
Lextar also demonstrated a smaller 5.1-inch transparent display that was developed in collaboration with X-Display (this could be the same display shown in 2019). This display is based on a micro-IC structure to achieve a transparency of over 70%.
During the event, Lextar also announces its new micro-chip-in-package products. Lextar says that technology makes it possible to reduce micro-R/G/B LED chips to a pixel-sized package that is embedded onto PCB substrates. This enables very high contrast and Lextar says that this technology not only makes screens appear more three-dimensional, but it also enables excellent color uniformity over a wide range of viewing angles.