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US 2023/0157044 A1Published application
Method for producing display device, and display device
AssigneeSharp Kabushiki Kaisha
InventorsJUN SAKUMA, YASUSHI ASAOKA
Life of this patent
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Abstract
A method for manufacturing a display device, including: a step of applying a first mixture obtained by mixing green quantum dots and a photosensitive resin on a green electron transport layer, an exposure step of pattern-exposing the first mixture to cure a portion of the first mixture, the portion being a green light-emitting layer; a development step of removing an uncured portion of the first mixture and developing the green light-emitting layer; and an etching step of etching the green electron transport layer with an etching solution that is an alkaline solution or an organic solvent using the green light-emitting layer as a mask.
Claims13
-5. (canceled)
A display device comprising:
- a substrate;
- a first subpixel including a first pixel electrode provided on the substrate, a first light-emitting layer including first quantum dots, and a first charge transport layer provided between the first pixel electrode and the first light-emitting layer;
- a second subpixel including a second pixel electrode provided on the substrate, a second light-emitting layer including second quantum dots, and a second charge transport layer provided between the second pixel electrode and the second light-emitting layer and having the same polarity as the first charge transport layer, the second subpixel being adjacent to the first subpixel;
- and
- a third subpixel including a third pixel electrode provided on the substrate, a third light-emitting layer including third quantum dots, and a third charge transport layer provided between the third pixel electrode and the third light-emitting layer and having the same polarity as the first charge transport layer, the third subpixel being adjacent to the first subpixel,
- wherein the first charge transport layer, the second charge transport layer, and the third charge transport layer are soluble in an etching solution which is an alkaline solution or an organic solvent,
- the first light-emitting layer is in direct contact with the first charge transport layer,
- the second light-emitting layer is in direct contact with the second charge transport layer,
- the third light-emitting layer is in direct contact with the third charge transport layer,
- each of the first light-emitting layer, the second light-emitting layer, and the third light-emitting layer includes a cured photosensitive resin that is insoluble in the etching solution, and
- the first charge transport layer, the second charge transport layer, and the third charge transport layer are separated from each other.
8 more elements
A display device comprising:
- a substrate;
- a first subpixel including a first pixel electrode provided on the substrate, a first light-emitting layer including first quantum dots, and a first charge transport layer provided between the first pixel electrode and the first light-emitting layer;
- a second subpixel including a second pixel electrode provided on the substrate, a second light-emitting layer including second quantum dots, and a second charge transport layer provided between the second pixel electrode and the second light-emitting layer and having the same polarity as the first charge transport layer, the second subpixel being adjacent to the first subpixel;
- and
- a third subpixel including a third pixel electrode provided on the substrate, a third light-emitting layer including third quantum dots, and a third charge transport layer provided between the third pixel electrode and the third light-emitting layer and having the same polarity as the first charge transport layer, the third subpixel being adjacent to the first subpixel,
- wherein the first charge transport layer, the second charge transport layer, and the third charge transport layer are soluble in an etching solution that is an alkaline solution or an organic solvent,
- the first light-emitting layer is in direct contact with the first charge transport layer,
- the second light-emitting layer is in direct contact with the second charge transport layer,
- the third light-emitting layer is in direct contact with the third charge transport layer,
- each of the first light-emitting layer, the second light-emitting layer, and the third light-emitting layer includes a cured photosensitive resin that is insoluble in the etching solution,
- a portion of the second charge transport layer overlaps with a portion of the first charge transport layer with the first light-emitting layer interposed between the portion of the second charge transport layer and the portion of the first charge transport layer, and
- a portion of the third charge transport layer overlaps with a portion of the first charge transport layer with the first light-emitting layer interposed between the portion of the third charge transport layer and the portion of the first charge transport layer.
9 more elements
A display device comprising:
- a substrate;
- a first subpixel including a first pixel electrode provided on the substrate, a first light-emitting layer including first quantum dots, and a first portion of a charge transport layer provided between the first pixel electrode and the first light-emitting layer;
- a second subpixel including a second pixel electrode provided on the substrate, a second light-emitting layer including second quantum dots, and a second portion of the charge transport layer provided between the second pixel electrode and the second light-emitting layer, the second subpixel being adjacent to the first subpixel;
- and
- a third subpixel including a third pixel electrode provided on the substrate, a third light-emitting layer including third quantum dots, and a third portion of the charge transport layer provided between the third pixel electrode and the third light-emitting layer, the third subpixel being adjacent to the first subpixel,
- wherein the charge transport layer is soluble in an etching solution that is an alkaline solution or an organic solvent,
- the first light-emitting layer
- is in direct contact with the first portion of the charge transport layer, and
- includes a cured photosensitive resin that is insoluble in the etching solution, and
- each of the second portion and the third portion of the charge transport layer is thinner than the first portion of the charge transport layer.
7 more elements
Dependencies are inferred from the claim text.