Method for producing display device, and display device
A method for manufacturing a display device includes: applying a first solution containing (a) and (b) to a substrate containing an oxide, (a) a first functional group capable of being coordinated to the oxide, (b) a second functional group that is cleaved by being irradiated with ultraviolet light to generate any one of an amino group, a carboxyl group, a thiol group, and a selenol group; irradiating at least a part of the first solution applied to the substrate with first ultraviolet light; and applying a solution containing halogenated first quantum dots to a portion irradiated with the first ultraviolet light in the irradiating at least a part of the first solution applied to the substrate to form a first quantum dot layer.
1 . A method for manufacturing a display device comprising:
applying a first solution containing (a) and (b) to a substrate containing an oxide,
(a) a first functional group capable of being coordinated to the oxide,
(b) a second functional group that is cleaved by being irradiated with ultraviolet light to generate any one of an amino group, a carboxyl group, a thiol group, and a selenol group;
irradiating at least a part of the first solution applied to the substrate with first ultraviolet light; and
applying a solution containing halogenated first quantum dots to a portion irradiated with the first ultraviolet light in the irradiating at least a part of the first solution applied to the substrate to form a first quantum dot layer.
2 . The method for manufacturing a display device according to claim 1 ,
wherein the first functional group contains any one of a phosphonyl group, a carboxyl group, and a silanol group.
3 . The method for manufacturing a display device according to claim 1 ,
wherein the second functional group contains an ester bond.
4 . The method for manufacturing a display device according to claim 1 ,
wherein the first solution does not contain an organic ligand including a functional group capable of being coordinated to each of the halogenated first quantum dots.
5 . The method for manufacturing a display device according to claim 1 ,
wherein (1) a first liquid in which first quantum dots each coordinated with an organic ligand are dispersed in a non-polar solvent and (2) a second liquid immiscible with the first liquid and containing an aprotic polar solvent and metal halide are mixed, and
the halogenated first quantum dots are taken out from a liquid obtained by mixing the first liquid and the second liquid.
6 . The method for manufacturing a display device according to claim 1 , the method further comprising:
irradiating a portion that is at least a part of the first solution applied to the substrate and is not irradiated with the first ultraviolet light with second ultraviolet light after the applying a solution containing halogenated first quantum dots, and
applying a solution containing halogenated second quantum dots to the portion irradiated with the second ultraviolet light in the irradiating a portion that is at least a part of the first solution applied to the substrate and is not irradiated with the first ultraviolet light to form a second quantum dot layer.
7 . The method for manufacturing a display device according to claim 6 ,
wherein, before the applying a solution containing halogenated second quantum dots, a detachment preventing agent for preventing the halogenated first quantum dots from being detached from the substrate is applied to at least the first quantum dot layer.
8 . The method for manufacturing a display device according to claim 1 ,
wherein after the applying a solution containing halogenated first quantum dots, a second solution containing (A) the halogenated first quantum dots constituting the first quantum dot layer and (B) a functional group capable of being coordinated to each of the halogenated second quantum dots are applied to at least the first quantum dot layer, and
a solution containing the halogenated second quantum dots is applied to a portion where the second solution is applied to the first quantum dot layer to form a second quantum dot layer.
9 . A display device comprising:
a substrate containing an oxide;
a first bonding functional group capable of bonding to the oxide;
a second bonding functional group bonded to the first bonding functional group via a carbon chain, the second bonding functional group being any one of an amino group, a carboxyl group, a thiol group, and a selenol group; and
a quantum dot layer,
wherein the quantum dot layer includes halogen and quantum dots each bonded to the second bonding functional group and the halogen.
10 . The display device according to claim 9 ,
wherein an average film thickness of an end portion of the quantum dot layer is 80% or more and 120% or less of an average film thickness of a central portion of the quantum dot layer.