Method of producing electroluminescence apparatus, electroluminescence apparatus and electronic device
View Patent ↗A method of producing an electroluminescence apparatus, an electroluminescence apparatus, and an electronic device having excellent light-emitting properties and light-emitting life are provided. A suitable electron injection layer can be formed using a liquid-phase method while a light-emitting layer is prevented from dissolution by a composition ink. Also provided are a method of producing an electroluminescence apparatus, an electroluminescence apparatus, and an electronic device in which formation of the electron injection layer can be simplified. The method of producing an electroluminescence apparatus having a plurality of light-emitting layers that emit light with different colors can include the step of forming an electron injection layer by a liquid discharge method or a printing method when predetermined types of the light-emitting layers are formed. A material for forming the electron injection layer can be a liquid material containing an organic metal compound.
1. A method of producing an electroluminescence apparatus, comprising
forming a light-emitting layers that emits red light,
forming a light-emitting layers that emits green light,
forming a light-emitting layers that emits blue light, and
forming a layer containing an organic metal compound to contact only the layer that emits blue light;
where the organic metal compound contains a metal quinoline complex;
where the organic metal compound-containing layer is not formed on the layer that emits red light; and
where the organic metal compound-containing layer is not formed on the layer that emits green light.
2. The method of producing an electroluminescence apparatus according to claim 1 , further comprising a layer capable of reducing the metal of the organic metal compound that contains at least a metal selected from the group consisting of Mg, Ca, and Al.
3. The method of producing an electroluminescence apparatus according to claim 1 , wherein the layer containing the organic metal compound is formed by using a liquid material as a solvent containing one of an alcohol, a ketone, an ether, an ester, and an amide.
4. The method of producing an electroluminescence apparatus according to claim 1 , wherein the light-emitting layer that emits blue light is surrounded by a bank, and the layer containing the organic metal compound is formed by injecting a liquid material on the light-emitting layer surrounded by a bank.
5. The method of producing an electroluminescence apparatus according to claim 1 , wherein the organic metal compound contains at least one metal element selected from group 1 A of the periodic table, group 2 A of the periodic table and a rare earth element.
6. The method of producing an electroluminescence apparatus according to claim 5 , wherein the metal element is selected from the group consisting of Li, Na, K, Rb, Cs, Mg, Ca, Sr, Ba, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dv, Ho, Er, Tm, Yb and Lu.