Cost-Effective: Though not as bright as OLED, transparent displays made by LCD still remain relatively cheaper; also, larger screen sizes can easily be fabricated. Cost-Effective: Though not as bright as OLED, transparent displays made by LCD still remain relatively cheaper; also, larger screen sizes can easily be fabricated. Cost-Effective: Though not as bright as OLED, transparent displays made by LCD still remain relatively cheaper; also, larger screen sizes can easily be fabricated.