The driving method

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PROBLEM TO BE SOLVED : To provide an element emitting red light (wavelength of 600-800 nm), which is an electroluminescent element containing an oxide having a perovskite type crystalline structure expressed by a general formula : RMO3, wherein a rare earth element is represented by R, and M expresses Al, Mn, or Cr. SOLUTION : This electroluminescent element has an electroluminescent layer between facing electrodes. (1) The electroluminescent layer comprises the oxide having the perovskite type crystalline structure expressed by the general formula : RMO3, wherein a rare earth metal element is represented by R, and M expresses Al, Mn or Cr. (2) This electroluminescent element emits light having a wavelength of 600-800 nm by impressing a pulse voltage with a frequency of not less than 1 kHz between the electrodes. COPYRIGHT : (C)2007, JPO&INPIT