Light-emitting device and electronic device
View Patent ↗A light-emitting device includes a light-emitting element between two substrates, a terminal portion which includes at least two terminals and is electrically connected to the light-emitting element, and an adhesive layer between the two substrates. A substrate having a coefficient of thermal expansion of 10 ppm/K or lower is used as a substrate that overlaps with a terminal portion connected to an FPC.
1. A light-emitting device comprising:
a first substrate;
a second substrate facing the first substrate;
a light-emitting element between the first substrate and the second substrate;
a third substrate partly overlapping with the first substrate;
a terminal portion electrically connected to the light-emitting element and over the third substrate, the terminal portion comprising at least two terminals; and
an adhesive layer between the first substrate and the second substrate,
wherein a coefficient of thermal expansion of the third substrate is 10 ppm/K or lower.
2. The light-emitting device according to claim 1 ,
wherein the adhesive layer is in contact with the third substrate.
3. The light-emitting device according to claim 1 ,
wherein the third substrate does not overlap with the light-emitting element.
4. The light-emitting device according to claim 1 ,
wherein an absolute value of a difference between a first coefficient of thermal expansion of the first substrate and a second coefficient of thermal expansion of the second substrate is within 10% of the first coefficient of thermal expansion or within 10% of the second coefficient of thermal expansion.
5. An electronic device comprising the light-emitting device according to claim 4 in a display portion.
6. A light-emitting device comprising:
a first substrate;
a second substrate facing the first substrate, the second substrate overlapping with a region of the first substrate;
a light-emitting element between the first substrate and the second substrate;
a terminal portion electrically connected to the light-emitting element and over an outer region of the region of the first substrate, the terminal portion comprising at least two terminals; and
an adhesive layer between the first substrate and the second substrate,
wherein a coefficient of thermal expansion of the first substrate is 10 ppm/K or lower.
7. The light-emitting device according to claim 6 ,
wherein an absolute value of a difference between a first coefficient of thermal expansion of the first substrate and a second coefficient of thermal expansion of the second substrate is within 10% of the first coefficient of thermal expansion or within 10% of the second coefficient of thermal expansion.
8. The light-emitting device according to claim 6 ,
wherein an FPC is electrically connected to the terminal portion though an anisotropic conductive layer.
9. An electronic device comprising the light-emitting device according to claim 6 in a display portion.