Light-emitting device and manufacturing method thereof, taillight and vehicle

A manufacturing method of a light-emitting device, comprising:

• forming at least one light-emitting element on one side of a backplane, wherein a wavelength of a first light emitted by each of the at least one light-emitting element is 500 nm to 580 nm;
• forming a wavelength conversion layer on one side of the at least one light-emitting element away from the backplane, wherein the wavelength conversion layer is configured to emit a second light with a different color from the first light under excitation of the first light;
• and
• forming a first optical structure on one side of the wavelength conversion layer away from the backplane, wherein the first optical structure comprises one or more optical elements and a substrate, each of the one or more optical elements being configured to focus the second light along a direction perpendicular to the backplane;
• forming an encapsulation layer, wherein the encapsulation layer is between the at least one light-emitting element and the first optical structure, the substrate being located between the at least one optical element and the encapsulation layer;
• and
• forming a second optical structure located between the first optical structure and the encapsulation layer, and comprising a dimming portion, wherein a refractive index of the dimming portion is smaller than a refractive index of the substrate.

A light-emitting device, comprising:

• at least one light-emitting element located on one side of a backplane, wherein a wavelength of a first light emitted by each of the at least one light-emitting element is 500 nm to 580 nm;
• a wavelength conversion layer located on one side of the at least one light-emitting element away from the backplane and configured to emit a second light with a different color from the first light under excitation of the first light;
• a first optical structure located on one side of the wavelength conversion layer away from the backplane, and comprising one or more optical elements, each of the one or more optical elements being configured to focus the second light along a direction perpendicular to the backplane;
• an encapsulation layer located between the at least one light-emitting element and the first optical structure,
• wherein the encapsulation layer comprises a first inorganic material layer, an organic material layer and a second inorganic material layer which are sequentially stacked along a direction of the at least one light-emitting element away from the backplane, and the wavelength conversion layer is located between the first inorganic material layer and the second inorganic material layer.