1. A light-emitting device comprising:
a substrate having a curved surface and with plasticity;
a light-emitting element over the curved surface of the substrate, the light-emitting element comprising a light-emitting layer between a pair of electrodes;
a sealing layer covering the light-emitting element; and
a protective layer over and in contact with the sealing layer.
2. The light-emitting device according to claim 1, wherein the substrate comprises at least one of a metal material and an alloy material.
3. The light-emitting device according to claim 1, wherein the substrate comprises at least one of aluminum, copper, iron, nickel, titanium, and magnesium.
4. The light-emitting device according to claim 1, further comprising a planarization layer between the light-emitting element and the substrate.
5. The light-emitting device according to claim 4, wherein the planarization layer comprises a resin in which particles comprising at least one of a metal material and an alloy material are dispersed.
6. The light-emitting device according to claim 1, further comprising a plurality of pixels over the curved surface of the substrate.
7. The light-emitting device according to claim 1, wherein the protective layer comprises a glass layer.
8. The light-emitting device according to claim 1, wherein the protective layer is a stack in which a glass layer, a bonding layer, and a resin layer are stacked.
9. A light-emitting device comprising:
a substrate having a curved surface and with plasticity;
a light-emitting element over the curved surface of the substrate, the light-emitting element comprising a light-emitting layer between a pair of electrodes;
a transistor electrically connected to the light-emitting element;
a sealing layer covering the light-emitting element; and
a protective layer over and in contact with the sealing layer,
wherein a channel formation region of the transistor comprises an oxide semiconductor.
10. The light-emitting device according to claim 9, wherein the substrate comprises at least one of a metal material and an alloy material.
11. The light-emitting device according to claim 9, wherein the substrate comprises at least one of aluminum, copper, iron, nickel, titanium, and magnesium.
12. The light-emitting device according to claim 9, further comprising a planarization layer between the light-emitting element and the substrate.
13. The light-emitting device according to claim 12, wherein the planarization layer comprises a resin in which particles comprising at least one of a metal material and an alloy material are dispersed.
14. The light-emitting device according to claim 9, further comprising a plurality of pixels over the curved surface of the substrate.
15. The light-emitting device according to claim 9, wherein the protective layer comprises a glass layer.
16. The light-emitting device according to claim 9, wherein the protective layer is a stack in which a glass layer, a bonding layer, and a resin layer are stacked.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. An objective lens unit, comprising:
an objective lens for irradiating and converging laser light on an optical disc as an a light information recording medium; and
a lens frame for retaining the objective lens,
wherein the lens frame is structured so that at least a portion closer to a rotation center of the optical disc is offset to an inner side of the lens frame with regards to a virtual edge section closer to the rotation center of the optical disc, wherein the virtual edge section is in a nodal line of a virtual plane that includes an end face which is closest to the optical disc in the lens frame and the objective lens, and that is perpendicular to an optical axis and a virtual rotation curved surface that is obtained when a virtual straight line passing a portion which is farthest from the optical axis in the lens frame and the objective lens, in parallel with the optical axis, is rotated around the optical axis as a center axis.
2. The objective lens unit of claim 1, wherein at least a part of an outer circumference section of the lens frame closer to the rotation center of the optical disc is corner-rounded.
3. The objective lens unit of claim 1, wherein a part of the lens frame closer to the rotation center of the optical disc has a reduced thickness.
4. The objective lens unit of claim 1, wherein the lens frame comprises a projection section for positioning the objective lens in a direction perpendicular to the optical axis except for a rotation center direction of the optical disc.
5. The objective lens unit of claim 1, wherein:
the objective lens comprises a flange section;
the lens frame retains the objective lens by a surface of the flange section on a light source side; and
an outer circumference of the flange section is exposed at at least a part of the lens frame closer to the rotation center of the optical disc.
6. The objective lens unit of claim 5, wherein the surface of the flange section on the light source side comprises an engagement section for engaging with the lens frame to position the objective lens in a direction perpendicular to the optical axis.
7. The objective lens unit of claim 1, wherein:
the objective lens unit comprises two optical elements; and
the lens frame is integrated with one of the optical elements.
8. An optical pickup device comprises a light source and an objective lens unit,
wherein the objective lens unit comprises:
an objective lens for irradiating and converging laser light on an optical disc as an a light information recording medium; and
a lens frame for retaining the objective lens,
wherein the lens frame is structured so that at least a portion closer to a rotation center of the optical disc is offset to an inner side of the lens frame with regards to a virtual edge section closer to the rotation center of the optical disc, wherein the virtual edge section is in a nodal line of a virtual plane that includes an end face which is closest to the optical disc in the lens frame and the objective lens, and that is perpendicular to an optical axis and a virtual rotation curved surface that is obtained when a virtual straight line passing a portion which is farthest from the optical axis in the lens frame and the objective lens, in parallel with the optical axis, is rotated around the optical axis as a center axis.
9. The optical pickup device of claim 8, wherein at least a part of an outer circumference section of the lens frame closer to the rotation center of the optical disc is corner-rounded.
10. The optical pickup device of claim 8, wherein a part of the lens frame closer to the rotation center of the optical disc has a reduced thickness.
11. The optical pickup device of claim 8, wherein the lens frame comprises a projection section for positioning the objective lens in a direction perpendicular to the optical axis except for a rotation center direction of the optical disc.
12. The optical pickup device of claim 8, wherein:
the objective lens comprises a flange section;
the lens frame retains the objective lens by a surface of the flange section on a light source side; and
an outer circumference of the flange section is exposed at at least a part of the lens frame closer to the rotation center of the optical disc.
13. The optical pickup device of claim 12, wherein the surface of the flange section on the light source side comprises an engagement section for engaging with the lens frame to position the objective lens in a direction perpendicular to the optical axis.
14. The optical pickup device of claim 8, wherein:
the objective lens unit comprises two optical elements; and
the lens frame is integrated with one of the optical elements.