ORGANIC LIGHT EMITTING DISPLAY DEVICE

摘要

An organic light emitting display device includes a first electrode formed on a substrate and being a reflective electrode, a second electrode facing the first electrode and being a semi-transparent electrode, and red, green and blue emission layers formed between the first and second electrodes, wherein a maximum electroluminescent peak of the redemission layer and a maximum photoluminescence peak of a host included in the red emission layer satisfy Equation 1 below:;REDELλmax−RHPLλmax≧120 nm  ;wherein REDELλmax is a maximum electroluminescent peak of the red emission layer, and RHPLλmax is a maximum photoluminescence peak of a red host included in the red emission layer.

主权项

1. An organic light emitting display device comprising:
a first electrode formed on a substrate and being a reflective electrode; a second electrode facing the first electrode and being a semi-transparent electrode; and red, green and blue emission layers formed between the first and second electrodes, wherein a maximum electroluminescent peak of each of the red, green and blue emission layers and a maximum photoluminescence peak of a host included in each emission layer satisfy Equations 1 to 3 below:
REDELλmax−RHpLλmax≧120 nm   wherein REDELλmax is a maximum electroluminescent peak of the red emission layer, and RHPLλmax is a maximum photoluminescence peak of a red host included in the red emission layer,
GreenELλmax−GHPLλmax≧20 nm   wherein GREENELλmax is a maximum electroluminescent peak of the green emission layer, and GHPLλmax is a maximum photoluminescence peak of a green host included in the green emission layer, and
BLUEmELλmax−BHpPLλmax≧20 nm   wherein BLUEELλmax is a maximum electroluminescent peak of the blue emission layer, and BHPLλmax is a maximum photoluminescence peak of a blue host included in the blue emission layer.