| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an EL device capable of improving color purity of output light with a simple structure and easy to manufacture. <P>SOLUTION: The EL device 100 is equipped with R pixels of red color, G pixels of green color and B pixels of blue color, each of the R, G, B pixels equipped with a light-emitting layer 7 intercalated between a pair of electrodes 4, 9. An insulation laminated membrane 18 formed on a side surface of a translucent electrode 4 opposite to the light-emitting layer 7 includes low refractive index layers 17a, 17b, 17c and high refractive index layers 16a, 16b, 16c. Each of the low refractive index layers and the high refractive index layers includes a uniform thickness. When the light-emitting layer 7 emits light, thicknesses of the low refractive index layers and the high refractive index layers are determined so that light with higher intensity is emitted from the insulation laminated membrane than in case without the insulation laminated membrane in whichever light-emitting peak wavelength among the R pixel, the G pixel and the B pixel, by reflection at an interface between the translucent electrode 4 and the insulation laminated membrane 18 as well as an interface between the low refractive index layers 17a, 17b, 17c and the high refractive index layers 16a, 16b, 16c. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
