| 摘要 |
<p>It is an object to provide a long life white color light emitting device that generates white color light with good color purity. A white color light emitting device is comprised of oppositely arranged electrodes (3, 4), a light emitting layer (A) having an organic material and/or inorganic nanoparticles to carry out EL light emitting, a light emitting layer (B) having inorganic nanoparticles to carry out PL light emitting, and oppositely arranged reflective layers (5, 6) to resonate with light generated in the light emitting layer (A) in the inside of the device, thereby forming white color light with the light generated in the light emitting layer (A) and the light generated in the light emitting layer (B), wherein either one of the oppositely arranged electrodes (3, 4) or its adjacent layer has a total reflectance function and is formed as either one of the reflective layers while another one of the oppositely arranged electrodes (3, 4) or its adjacent layer has a semitransparent reflective function and is formed as another one of the reflective layers.</p> |
