A few months ago, Japan Display (JDI) announced that it has developed a "historic breakthrough in display technology" - a new OLED deposition process which they refer to as eLEAP, that is said to be cost effective and can be used to create freeform OLEDs that are brighter, more efficient, and longer lasting compared to OLEDs produced using mask evaporation (FMM).

JDI eLEAP aperture ratio image

According to a new report from Korea, Samsung Display is interested in JDI's new technique. Interestingly the report shows conflicting views within SDC - some are interested in adopting this new technology, especially at SDC's upcoming 8-Gen IT OLED production line, while others are more interested in preventing SDC's competitors (JDI, or others?) from using it, perhaps by pressuring OLED equipment makers to not offer needed equipment to JDI.

The report also suggests that a high-level delegation from SDC recently visited Applied Materials' headquarters, to discuss JDI's eLEAP technology. Applied is JDI's supplier of OLED deposition equipment.

eLEAP is based on a lithographic method, and does not require any masks. The main advantage seems to be that OLED displays produced by eLEAP technology can achieve an aperture ratio of 60%, compared with FMM OLEDs which achieve a ratio of about 28%. This means that the OLED displays can be driven at lower currents - which extends the lifetime, improves the efficiency and also enables higher-peak brightness when needed.

JDI claims that eLEAP displays offer a boost of 2X in emission efficiency and peak brightness - while lifetime is extended by of 3X (which also reduces burn-in problems). These numbers, if accurate, are highly impressive. JDI is using a 300PPI display for these calculations.



eLEAP stands for environment positive, Lithography with maskless deposition, Extreme long life, low power, and high luminance, and Any shape Patterning. JDI says that eLEAP can be combined with the company's HMO (High Mobility Oxide) backplane technology to dramatically improve OLED display performance. eLEAP production technology can be scaled up to 8-Gen (2200x2500 mm) substrates - or even larger, and is suitable for OLED display production from wearable-size displays to TV sizes.

Finally, JDI says that eLEAP reduces operating costs, reduces material waste and does not require cleaning fluids for the masks - which means that eLEAP significantly reduces material usage, waste and CO2 emissions.

Earlier this year JDI said that it has received significant customer interest, and the company is already in talks with customers as it aims to start sample eLEAP production by the end of 2022. JDI also expects to provide eLEAP technology to other display makers, which is something that SDC is indeed interested in.

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Innovation

This development is one of the most interesting and promising things to ever happen in OLED tech progression.I have been following such developments for about 18 years thanks to OLED-info.com.Thanks for keeping us apprised and updated,Ron and the OLED -info team ...we appreciate your efforts!

Merck - Advancing Display, Advancing LifeMerck - Advancing Display, Advancing Life