Display device

Abstract

A display device including light emitting elements corresponding to respective colors disposed on a substrate. Each of the light emitting elements corresponding to the respective colors has a cavity structure in which a light emission functioning layer including a light emitting layer is held between a reflecting electrode and a semi-transmitting electrode. The light emission functioning layer except for the light emitting layer is common to the light emitting elements corresponding to the respective colors.

1 . A display device comprising a plurality of organo-electroluminescent light emitting devices, each light emitting device have a resonance structure in which a light emission layer between upper and lower electrodes within which light can resonate, at least one of the light emitting devices has a adjusting layer to adjust the resonant structure. 
     
     
         2 . The display device of  claim 1 , wherein the light emitting devices emit light of different wavelengths. 
     
     
         3 . The display device of  claim 1 , wherein at least one light emitting device emits red light, at least one light emitting device emits blue light, and at least one light emitting device emits green light. 
     
     
         3 . The display device of  claim 1 , comprising:
 a substrate; and   an insulating layer on the substrate, the insulating layer having concavities therein;   wherein,   each light emitting device corresponds to a respective concavity,   each the light emitting device has a respective portion of a light emission layer within its respective concavity,   each lower electrode is a reflecting electrode,   each upper electrode is a semi-transmitting electrode,   each respective light emission layer portion includes a respective light emitting layer, and   the light emission layer, except for the respective light emitting layers and the light adjusting layer, is common to all of the light emitting elements.   
     
     
         4 . The display device of  claim 3 , comprising red, blue and green light emission layers. 
     
     
         5 . The display device of  claim 1 , comprising:
 a substrate;   an insulating layer on the substrate, the insulating layer having concavities therein, each concavity corresponding to a respective light emitting device; and   at least first, second and third light emitting elements carried on the substrate, the first, second and third light emitting elements emitting light having first, second and third wavelengths, respectively, the first wavelength being shorter than the second wavelength, the second wavelength being shorter than the third wavelength, the first, second and third light emitting elements being associated with a respective concavity in the insulating layer,   wherein,   each of the light emitting devices has a cavity structure in which a respective portion of a light emission layer is held within its respective concavity, each respective light emission layer portion being held between the upper electrode and lower electrode electrode,   each upper electrode is a semi-transmitting electrode,   each lower electrode is a reflective electrode, each respective light emission layer portion includes a respective light emitting layer,   at least the first light emitting device has an adjusting layer in its respective light layer portion, and   the light emission layer, except for the respective light emitting layers and the light adjusting layer, is common to the first, second and third light emitting devices.   
     
     
         6 . The display device of  claim 5 , wherein at least two of the first, second and third light emitting devices have adjusting layers. 
     
     
         7 . The display device of  claim 5 , wherein the light adjusting layers are a common layer between the at least two of the first, second and third light emitting devices. 
     
     
         8 . The display device of  claim 1 , wherein at least two of the light emitting devices have a an adjustment layer.