Light-emitting device including a dual emission panel
AssigneeSemiconductor Energy Laboratory Co., Ltd.
InventorsJunichiro Sakata, Takahiro Ibe, Hisao Ikeda
Life of this patent
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Abstract
There is a problem in a dual emission device emitting light out of both surfaces that an image on the surface and an image on the rear surface are different from each other (either image is mirror-reversed). A dual emission device is disclosed in which either light emitted from the light-emitting device is reflected by glass including a semi-transmissive film to display on glass an image same as another image obtained also from the light-emitting device, and simultaneously, external information can be viewed through the glass. A mirror can be arranged between the dual emission device and the glass including a semitransparent film.
Claims10
A semiconductor device comprising:
- a light-emitting device comprising:
- a substrate having a flat surface;
- and
- a light emitting layer over the substrate;
- and
- an optical device adjacent to the light-emitting device,
- wherein the optical device includes a first surface and a second surface,
- wherein the first surface is flat and parallel to the flat surface,
- wherein the second surface is a concave surface,
- wherein the optical device is configured to allow light from the light-emitting device to be extracted from the second surface, and
- wherein the optical device is capable of adjusting an optical path at the second surface.
A semiconductor device comprising:
- a light-emitting device comprising:
- a substrate having a flat surface;
- a first transistor over the substrate;
- a second transistor over the substrate and electrically connected to the first transistor;
- and
- a light emitting layer over the first transistor and the second transistor;
- and
- an optical device adjacent to the light-emitting device,
- wherein the optical device includes a first surface and a second surface,
- wherein the first surface is flat and parallel to the flat surface,
- wherein the second surface is a concave surface,
- wherein the optical device is configured to allow light from the light-emitting device to be extracted from the second surface, and
- wherein the optical device is capable of adjusting an optical path at the second surface.
Dependencies are inferred from the claim text.