11th gen is the largest size that is being built, I believe. This article shows where Samsung is trying to increase its presence in China. Think quantum dots applied onto large sheets; the kilograms that would be used in production. I do not know where things are at with construction at this time.

Four 60-inch TV displays can be produced out of an 8th-gen LCD panel while 10 60-inch TV displays can be made out of one 11th-gen LCD sheet

Samsung Display said on Sept. 13, 2016 that it will join hands with Chinese display maker China Star Optoelectronics Technology to roll out next-generation liquid-crystal displays.

http://www.theinvestor.co.kr/view.php?ud=20160913000510