Monday, September 28, 2015

Origin and History of Electro Luminescent Displays

As many of you know, Dr. Tuomo Suntola and co-workes invented many ALD technologies and processes and further developed Atomic Layer Deposition (ALD), then called Atomic Layer Epitaxy (ALE) to an industrial mass production process during the 70s and 80s. They did this in order to have a reliable manufacturing method with atomic level control of dopants and crystallinity of the individual thin film layers making up the EL device for producing Electro Luminescent Displays with reliable operation. Most ALD experts has com across this story numerous times and that is why it is interesting to read about it from a wider perspective. Here is an excellent article on the origin and history of EL Displays worth reading also including the early 20th century discoveries and work on electroluminescense and other big players like SHARP.

http://www.elwire.net/products/electroluminescent-displays/



For more ALD related information and History of they development that took place in Finland you should also visit the ADL 2014 Kyoto Tutorial by Riikka Puuronen (VTT, Finland) which is available at Slideshare: http://www.slideshare.net/RiikkaPuurunen/aldhistory-tutorial-in-kyoyo-al-dhistory-tutorialald2014riikkapuurunen20140615 (Slide above, Riikka Puurunen, VTT))

If you´re interest in more early history of ALD you should read about or join the VHPA Project - it is quite exciting!

Virtual Project on the History of ALD (VPHA)

VPHA is an open collaborative effort, whose goal is to clarify open questions related to the early history of the Atomic Layer Deposition (ALD) thin film deposition technique. VPHA was launched in July 2013. VPHA is based on voluntary efforts, and anyone interested in the history of ALD is welcome to join. All VPHA activities are made in an atmosphere of openness, respect and trust.

http://www.vph-ald.com