The present invention provides a high-efficiency red phosphor and a method of manufacturing the same, a white light source and a lighting device capable of performing white light by using the red phosphor, and further provides a liquid crystal display device with good color reproducibility. (A), europium (Eu), silicon (Si), carbon (C), oxygen (O) and nitrogen (N) However, in the composition formula (1), the element A is a Group 2 element containing at least calcium (Ca) and strontium (Sr). In the composition formula (1), m, x, y and n satisfy the relationship of 3 m 5, 0 x 1, 0 y 9, 0 n 10. According to such a red phosphor, the quantum efficiency can be improved as compared with a red phosphor containing no calcium (Ca) and containing strontium (Sr) as the element A.
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