Japan Display Announces Revolutionary OLED Production Method Based on Lithography


Japan Display (JDI) announced that they have developed a new OLED deposition technology, which they call eLEAP, which is cost effective and can be used to create OLEDs that are brighter, more efficient and longer lasting than OLEDs produced using a mask. evaporation (FMM). eLEAP also allows OLED free-form deposition. JDI calls its new technology a “historic breakthrough in display technology”.

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

JDI claims that eLEAP screens deliver a 2X increase in emitting efficiency and peak brightness – while life is extended by 3X (which also reduces burn-in issues). These figures, if correct, are very impressive. JDI uses a 300PPI screen for these calculations.

eLEAP stands for andpositive environment, Llithography with deposit without mask, Elong life, low power and high luminance, and Any Form Patterning. JDI says eLEAP can be combined with the company’s HMO (High Mobility Oxide) backplane technology to dramatically improve OLED display performance. The eLEAP production technology can be scaled up to 8 Gen substrates (2200 x 2500 mm) – or even more, and is suitable for the production of OLED displays, from portable displays to TV sizes.

Finally, JDI claims that eLEAP lowers operating costs, reduces material waste and does not require cleaning fluids for masks – meaning eLEAP significantly reduces material usage, waste and CO2 emissions.

JDI says it has garnered considerable interest from customers and the company is already in discussions with customers as it aims to start production of eLEAP samples by the end of 2022. JDI also plans to supply eLEAP technology to other display manufacturers.


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