Display device and manufacturing method for same
A display device is provided with a light-emitting element layer including an anode electrode, a cathode electrode, and a quantum dot light-emitting layer sandwiched between the anode electrode and the cathode electrode, wherein the quantum dot light-emitting layer includes at least quantum dots and nanofibers. A method for manufacturing a display device includes forming a quantum dot light-emitting layer by applying a colloidal solution including at least quantum dots and nanofibers by ink-jet.
1. A display device, comprising:
a light-emitting element including
an anode electrode,
a cathode electrode, and
a quantum dot light-emitting layer sandwiched between the anode electrode and the cathode electrode,
wherein the quantum dot light-emitting layer includes at least quantum dots and nanofibers.
2. The display device according to claim 1 ,
wherein a number of the quantum dots included in the quantum dot light-emitting layer is greater than a number of the nanofibers.
3. The display device according to claim 1 ,
wherein a diameter of the nanofibers included in the quantum dot light-emitting layer is less than a diameter of the quantum dots, and
a length of the nanofibers is greater than the diameter of the quantum dots.
4. The display device according to claim 1 ,
wherein a length of the nanofibers included in the quantum dot light-emitting layer ranges from not less than 2 times a thickness of the quantum dot light-emitting layer to not greater than 1 μm.
5. The display device according to claim 1 ,
wherein the light-emitting element further comprises a charge transport layer and a hole transport layer, and
the charge transport layer and/or the hole transport layer include nanofibers.
6. The display device according to claim 1 ,
wherein the nanofibers are cellulose nanofibers.
7. The display device according to claim 1 ,
wherein the nanofibers are TEMPO-oxidized cellulose nanofibers.
8. A method for manufacturing a display device, comprising:
forming a quantum dot light-emitting layer by applying a colloidal solution including at least quantum dots and nanofibers by ink-jet.
9. The method for manufacturing a display device according to claim 8 ,
wherein an amount of nanofibers in the colloidal solution is greater than 0 and less than or equal to 1 wt. %.
10. The method for manufacturing a display device according to claim 8 ,
wherein a viscosity of the colloidal solution at room temperature (from 20° C. to 25° C.) ranges from 5 mPa·s to 20 mPa·s.