Abstract: A method of brightness enhancement layer with sub-wavelength structure for a light-emitting element contains steps of: (a). synthesizing PS nanospheres by using emulsion polymerization without emulsifier; (b). spreading and suspending the PS nanospheres in a liquid level by way of PS nanosphere suspension; (c). forming the PS nanospheres in a close-packed arrangement by using surfactant solution; (d). regulating a diameter of the PS nanospheres in an oxygen plasma treatment so as to form non-close-packed single-layer PS nanosphere array structure, thus producing the sub-wavelength structure; (e) replicating the sub-wavelength structure onto an indium tin oxide (ITO) conductive glass in a nanoimprint lithography manner; and (f) using the ITO conductive glass with the sub-wavelength structure as a substrate so as to manufacture the light-emitting element.

Abstract: A method of brightness enhancement layer with sub-wavelength structure for a light-emitting element contains steps of: (a). synthesizing PS nanospheres by using emulsion polymerization without emulsifier; (b). spreading and suspending the PS nanospheres in a liquid level by way of PS nanosphere suspension; (c). forming the PS nanospheres in a close-packed arrangement by using surfactant solution; (d). regulating a diameter of the PS nanospheres in an oxygen plasma treatment so as to form non-close-packed single-layer PS nanosphere array structure, thus producing the sub-wavelength structure; (e) replicating the sub-wavelength structure onto an indium tin oxide (ITO) conductive glass in a nanoimprint lithography manner; and (f) using the ITO conductive glass with the sub-wavelength structure as a substrate so as to manufacture the light-emitting element.