초록 ▼

An electroluminescent (EL) device is disclosed and includes an electroluminescent element (9) having a light-emitting surface (91), and a prismatic film (1) having a surface (11) on which a plurality of prisms are provided and a back surface (12) opposed to said surface (11) and being placed on said

An electroluminescent (EL) device is disclosed and includes an electroluminescent element (9) having a light-emitting surface (91), and a prismatic film (1) having a surface (11) on which a plurality of prisms are provided and a back surface (12) opposed to said surface (11) and being placed on said light-emitting surface (91), wherein the back surface (12) of the prismatic film (1) and said light-emitting-surface (91) of the electroluminescent element (9) are closely bonded optically. The EL device can effectively intensify the light which is emitted in the normal line direction and also in the direction deviating from the normal line, and increase the luminance in the wide observation angle range.

대표청구항 ▼

An electroluminescent (EL) device is disclosed and includes an electroluminescent element (9) having a light-emitting surface (91), and a prismatic film (1) having a surface (11) on which a plurality of prisms are provided and a back surface (12) opposed to said surface (11) and being placed on said

An electroluminescent (EL) device is disclosed and includes an electroluminescent element (9) having a light-emitting surface (91), and a prismatic film (1) having a surface (11) on which a plurality of prisms are provided and a back surface (12) opposed to said surface (11) and being placed on said light-emitting surface (91), wherein the back surface (12) of the prismatic film (1) and said light-emitting-surface (91) of the electroluminescent element (9) are closely bonded optically. The EL device can effectively intensify the light which is emitted in the normal line direction and also in the direction deviating from the normal line, and increase the luminance in the wide observation angle range. mission Cathodes with Molybdenum Cases", J. Applied Physics, vol. 47, No. 12, Dec. 1976, pp. 5248-5263. C.A. Mead, "Operation of Tunnel-Emission Devices," J. Applied Physics, vol. 32, No. 4, Apr. 1961, pp. 646-652. W.P. Dyke et al., "Field Emission", Advances in Electronics and Electron Physics, 1956, pp. 89-185. M. Elinson, et al. "The Emission of Hot Electrons and the Field Emissions of Electrons From Tin Oxide", Radio Engineering and Electronic Physics, Jul. 1965, pp. 1290-1296. G. Dittmer, "Electrical Conduction and Electron Emission of Discontinuous Thin Films", Thin Solid Films, 9, 1972 pp. 317-328. M. Hartwell et al., "Strong Electron Emission From Patterned Tin-Indium Oxide Films", IEDM, 1975, pp. 519-521. H. Araki, et al., "Electroforming and Electron Emission of Carbon Thin Films", Journal of the Vacuum Soc. of Japan, vol. 26, No. 1, 1983; pp. 22-29 (with English Abstract on p. 22). A. Gehan, et al. "Nitrogen Containing Hydrogenated Amorphous Carbon for Thin-film Field Emission Cathodes", Appl. Phys. Lett 68(18), Apr. 29, 1996, pp. 2529-2531. E. Joon Chi, et al., "Effects of Heat Treatment On the Field Emission Property of Amorphous Carbon Nitride", J. Vac. Sci. Technolg. B 16(3), May/Jun. 1998, pp. 1219-1221. A Weber et al., "Carbon Based Thin Film Cathodes For Field Emission Displays", J. Vac. Sci. Technol. a 16(3), May/Jun. 1998; pp. 919-921. M.W. Geis et al., "Electron Field Emission from Diamond and other Carbon Materials after H2,O2,and Cs Treatment," Appl. Phys. Lett. 67(9), 2B Aug. 1995, pp. 1328-1330. K. Okano, et al., "Low-threshold Cold Cathodes Made of Nitorgen-doped Chemical-Vapour-Deposited diamond", Nature, vol. 381, May 9, 1996, pp. 140-141.