UNE-EN 61747-4:2012 Liquid crystal display devices - Part 4: Liquid crystal display modules and cells - Essential ratings and characteristics (Endorsed by AENOR in February of 2013.)
2013UNE-EN 61747-4:2012 Liquid crystal display devices - Part 4: Liquid crystal display modules and cells - Essential ratings and characteristics (Endorsed by AENOR in February of 2013.)