[ad_1] On December 4, 1970, Martin Schadt of Switzerland and Wolfgang Helfrich of Germany – both physicists of the Swiss pharmaceutical company Hoffman-LaRoche – applied for a patent on liquid crystals (LC). That’s right: on the “spinning nematic cell” (Twisted Nematic, TN). With TN technology, they laid the foundation for …
Read More »50 years ago: an LCD patent applied for
