Ugbu a, BEF film technology bụ monopolized site 3M, n'ihi na TFT LCD, Merck na Germany nwara imebi ọnọdụ a, usoro bụ na-etolite spiral gradient na fim site diffusing ìhè inductive chemical ogige site Mr.DJBroer , Holand, ime ka. N.phase BEF film.ma usoro a ga-decarded n'ihi na echiche na transmittence ife band enweghị ike ikpuchi dum ìhè anya ife band.
Mr.Yanghuai, Beijing Technology University emewo a itunanya na nkà na ụzụ , na-agbaji monoply nke 3M, ọma na-eweta N * LC BEF atụmatụ naanị 1 oyi akwa mkpuchi ,whereas narị n'ígwé maka 3M;ọnụ ahịa ya bụ naanị 40% nke 3M megide ojiji ọkụ karịrị 70%, 10% dị elu karịa 3M.na nnukwu ihe nkiri mpaghara dị mfe ime karịa 3M.
Oge nzipu: Jan-09-2021