Light-emitting device, functional panel, display device, input/output device, and data processing device

A light-emitting device comprising:

• an insulating film;
• a first structure body and a second structure body;
• a layer comprising a light-emitting material;
• a first electrode;
• and
• a second electrode,
• wherein the insulating film comprises a first surface,
• wherein an entirety of the first structure body and the first electrode overlap with each other,
• wherein an entirety of the second structure body and the first electrode overlap with each other,
• wherein the first structure body and the second structure body are apart from each other with a first distance therebetween,
• wherein the first structure body comprises a sidewall,
• wherein the sidewall forms a first angle with the first surface,
• wherein the first angle is greater than 0°and less than or equal to 90°,
• wherein the layer comprising the light-emitting material comprises a first region,
• wherein the first region is interposed between the second electrode and the first electrode,
• wherein light is emitted from the first region,
• wherein the first electrode comprises a second region and a third region,
• wherein the second region is interposed between the first region and the first surface,
• wherein the sidewall is interposed between the layer comprising the light-emitting material and the third region, and
• wherein the light is configured to be reflected in the third region.