Light-emitting device and camera
AssigneeSemiconductor Energy Laboratory Co., Ltd.
InventorsYoshiharu Hirakata, Nobuharu Ohsawa, Hisao Ikeda, Kazuhiko Fujita, Akihiro Kaita
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Abstract
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.
Claims15
An electronic device comprising a first camera, a second camera, and a display portion, the electronic device comprising:
- a light-emitting panel,
- wherein the light-emitting panel includes a light-emitting element emitting red light, a light-emitting element emitting green light, and a light-emitting element emitting blue light,
- wherein the display portion is configured to display a photographic subject, and to be a light-emitting portion as flash light,
- wherein the display portion is changed to the light-emitting portion as the flash light shortly before taking an image,
- wherein the display portion is provided on a same side as a first lens of the first camera,
- wherein the display portion is provided to avoid the first lens,
- wherein the display portion is provided to surround the first lens when seen from a display surface,
- wherein a second lens of the second camera is provided on a rear side of the display portion, and
- wherein a diameter of the second lens is different from a diameter of the first lens.
An electronic device comprising a first camera, a second camera, and a display portion, the electronic device comprising:
- a light-emitting panel including an organic EL element,
- wherein the display portion is configured to display a photographic subject, and to be a light-emitting portion as flash light,
- wherein the display portion is changed to the light-emitting portion as the flash light shortly before taking an image,
- wherein the display portion is provided on a same side as a first lens of the first camera,
- wherein the display portion is provided to avoid the first lens,
- wherein the display portion is provided to surround the first lens when seen from a display surface,
- wherein a second lens of the second camera is provided on a rear side of the display portion, and
- wherein a diameter of the second lens is different from a diameter of the first lens.
An electronic device comprising a first camera, a second camera, and a display portion, the electronic device comprising:
- a light-emitting panel including an organic EL element,
- wherein the display portion is configured to display a photographic subject, and to be a light-emitting portion as flash light,
- wherein the display portion is changed to the light-emitting portion as the flash light shortly before taking an image,
- wherein the display portion is provided on a same side as a first lens of the first camera,
- wherein the display portion is provided to avoid the first lens,
- wherein the display portion is provided to surround the first lens when seen from a display surface,
- wherein an area of the light-emitting portion is more than or equal to 5 cm2 and less than or equal to 200 cm2,
- wherein a second lens of the second camera is provided on a rear side of the display portion, and
- wherein a diameter of the second lens is different from a diameter of the first lens.
Dependencies are inferred from the claim text.