RED PHOSPHOR, METHOD FOR PRODUCING RED PHOSPHOR, WHITE LIGHT SOURCE, ILLUMINATING DEVICE, AND LIQUID CRYSTAL DISPLAY

摘要

PROBLEM TO BE SOLVED: To obtain a red phosphor having high luminous intensity and high luminance by using a compound having silicon, aluminum, strontium, europium, nitrogen and oxygen, and to widen a color gamut of a white LED by using the red phosphor.SOLUTION: The red phosphor includes an element A, europium (Eu), silicon (Si), aluminum (Al), oxygen (O) and nitrogen (N) at the atomic number ratio of composition formula (1), wherein the element A in composition formula (1) is at least one of magnesium (Mg), calcium (Ca), strontium (Sr) or barium (Ba), and m, x, y and n in composition formula (1) satisfy inequalities of 3