Light-emitting device and camera
A small light-emitting device is provided. A light-emitting device which is less likely to produce a shadow is provided. A structure including a switching circuit for supplying a pulsed constant current and a light-emitting panel supplied with the pulsed constant current has been conceived.
1. A semiconductor device comprising:
a light-emitting panel; and
a camera comprising a lens,
wherein the light-emitting panel and the lens are over the same side of a substrate,
wherein the light-emitting panel is configured to be used for a display,
wherein the light-emitting panel is configured to be used for a flash of the camera,
wherein the light-emitting panel includes a touch panel,
wherein the flash is surface emitting, and
wherein an area of the surface emitting is more than or equal to 5 cm 2 and less than or equal to 200 cm 2 .
2. The semiconductor device according to claim 1 ,
wherein the light-emitting panel comprises a support substrate and a light-emitting element extending in a planar manner over the support substrate, and
wherein the light-emitting element comprises a first electrode on a support substrate side, a second electrode overlapping with the first electrode, and an EL layer between the first electrode and the second electrode.
3. The semiconductor device according to claim 1 ,
wherein the light-emitting panel comprises a curved surface, a support substrate having flexibility, and a light-emitting element extending in a planar manner over the support substrate, and
wherein the light-emitting element comprises a first electrode on a support substrate side, a second electrode overlapping with the first electrode, and an EL layer between the first electrode and the second electrode.
4. A cellular phone or a digital still camera comprising the semiconductor device according to claim 1 .
5. A semiconductor device comprising:
a light-emitting panel; and
a camera comprising a lens,
wherein the lens is surrounded by the light-emitting panel,
wherein the light-emitting panel and the lens are over the same side of a substrate,
wherein the light-emitting panel is configured to be used for a display,
wherein the light-emitting panel is configured to be used for a flash of the camera,
wherein the light-emitting panel includes a touch panel,
wherein the flash is surface emitting, and
wherein an area of the surface emitting is more than or equal to 5 cm 2 and less than or equal to 200 cm 2 .
6. The semiconductor device according to claim 5 ,
wherein the light-emitting panel comprises a support substrate and a light-emitting element extending in a planar manner over the support substrate, and
wherein the light-emitting element comprises a first electrode on a support substrate side, a second electrode overlapping with the first electrode, and an EL layer between the first electrode and the second electrode.
7. The semiconductor device according to claim 5 ,
wherein the light-emitting panel comprises a curved surface, a support substrate having flexibility, and a light-emitting element extending in a planar manner over the support substrate, and
wherein the light-emitting element comprises a first electrode on a support substrate side, a second electrode overlapping with the first electrode, and an EL layer between the first electrode and the second electrode.
8. A cellular phone or a digital still camera comprising the semiconductor device according to claim 5 .