| 摘要 |
PURPOSE: A blue fluorescent substance, fluorescent lamp including thereof, and a high quality liquid crystal display device which has long lifetime and high color reproduction range are provided to facilitate center emission wavelength and to enhance color purity and stability of heat and moisture. CONSTITUTION: A blue fluorescent substance includes a substance which is represented by chemical formula 2: 2×(a×SrCl2*x'H2O + b×CaCl2*x''H2O + cNH4Cl + d(j'Sr(NO3)2 + k'SrCO3) + e(j''Ca(NO3)2 + k''CaCO3) + f(1/2Eu2O3)) + 5×(g(j'''B(OH)3 + k'''B2O3) + hAl2O3 + h'SiO2). Here, a + b + d + e + f = 1, 0.25 Δ a + b Δ 0.999, 0.1 Δ a + d Δ 0.8, 0 Δ c Δ 6, 0.001 Δ f Δ 0.5, 1 Δ g + h + h 'Δ 1.5, 0.9 Δ g Δ 1.5, j' + k '= 1, j' '+ k' '= 1, j' '' + k''' = 1, 0 Δ x' Δ 10, 0 Δ x'' Δ 10, 0 Δ 2×x' + 2×x'' + 5×g×j''' Δ 50.
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