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EL

EL( electroluminescence) 　　EL冷光片結構圖Electroluminescence means luminescence produced by high energy generated from electrons which are accelerated within phosphors when an alternating current is applied to a luminous layer consisting of phosphor powder。 　　EL element is largely divided into two types; dispersion-type EL with luminous layer consisting of phosphors and thin film-type EL consisting of dense thin films。 Each EL is also subdivided into alternating current type and direct current type according to driving method。 　　電致發光片是將發光粉置于兩個平板電極之間而構成的。