abstract |
An organic electroluminescent color light-emitting apparatus including, on a supporting substrate ( 100 ), a first pixel ( 10 ) comprising a first organic electroluminescent device emitting light having an emission peak wavelength of λ 1 ; and a second pixel ( 20 ) comprising a second organic electroluminescent device emitting light having an emission peak wavelength of λ 2 ; the emission peak wavelength λ 2 being longer than λ 1 ; the first and second organic electroluminescent devices each being a device in which a light-reflective electrode ( 11 ), ( 12 ), an organic luminescent medium layer and a semitransparent electrode are stacked in this order in the light-outcoupling direction; and m 1 and m 2 defined by the following formula (1) satisfying the relationship of m 2 +1.3>m 1 >m 2 +0.7 (m 1 and/or m 2 is an approximate integer of 0 or more). n n n n n n n n n m n x n n = n n n n 2 n n n L n x n n n n λ n x n n n + n n n Φ n x n n n 2 n n π n n n n n n n n ( n 1 n ) |