Patent ID: 7423368

Claim:
A method of producing a phosphor for a plasma display device, comprising: a process in which one of metal salt, nitrate salt, and organometallic salt, including zinc, silicon and manganese elements which comprise a green phosphor, are blended so that an element ratio of Zn to Si is to be 2/1, and then the salt and water are mixed to produce mixed liquid; a pre-firing process in which, after the mixed liquid is dried, the mixed liquid is fired in an air at 600° C. to 900° C., to produce pre-fired matter; and a firing process in which the pre-fired matter is fired in an atmosphere including at least one of N 2 , N 2 —O 2 , and Ar—O 2 , between 0.105 MPa and 150 MPa inclusive, at 1,000° C. to 1,350° C.