What They Say
DSCC interviewed monolithic MicroLED maker Jade Bird Display (JBD) of Taiwan about its new full colour RGB microdisplays, which are expected to be in prototype “early next year”. The display will have the following specifications:
- 0.22” diagonal
- Native RGB colours (no color conversion)
- qHD resolution (960 × 540 pixels)
- 5 ?m color pixel pitch (2.5 ?m sub-pixel pitch) or approximately 5,000 PPI
- Single chip (monolithic) display
Surprisingly, the chip is made by integrating together ultra-thin InGaN and AlInGaP devices. High wall plug efficiency sub-pixels is achieved using a patented engineered epitaxy layers which are less susceptible to edge effects with reducing pixel size, in addition to effective mesa sidewall passivation and microlens array to provide directional beam shaping. The LEDs are made in house in the firm’s Hefei fab.
Although the prototypes will not be available until next year, JBD is looking for new partners to design-in the monolithic full color projector into their next generation glasses. Next on the roadmap is a display with 3 ?m color pixel pitch (about 8,500 PPI).
The interview confirmed that the firm has a colour conversion technology under development but is still looking for suitable high flux materials. It also confirmed that its existing X-Cube 3 panel colour design will continue and that the new product will not be in products until 2025.
The firm also confirmed that it is in a long term partnership with Porotech.
What We Think
This is quite an achievement. Making the LEDs using different materials significantly complicates a lot of the system design because of the different properties. JBD certainly seems to be doing well in making progress. (BR)
JBD’s Concept
