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US 2015/0028328 A1Published application
Display device
AssigneeSemiconductor Energy Laboratory Co., Ltd.
InventorsHisao Ikeda, Hideki Uochi
Life of this patent
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Abstract
A non-breakable display device, electronic appliance, or lighting device is provided. A bendable display device in which a first flexible substrate and a second flexible substrate provided with transistors overlap each other with a bonding layer therebetween is fabricated. The display device is bent so that the first substrate is positioned on the inner side (the valley side) and the second substrate is positioned on the outer side (the mountain side).
Claims22
A display device comprising:
- a first substrate;
- a second substrate below the first substrate;
- a transistor on the second substrate, between the first substrate and the second substrate;
- and
- a third bonding layer between the first substrate and each of the transistor and the second substrate,
- wherein the third bonding layer comprises an adhesive material,
- wherein the first and the second substrates are flexible, and
- wherein the display device can have a bend portion displaying an image so that the second substrate is positioned on an outer side and the first substrate on an inner side in the bend portion.
5 more elements
A display device comprising:
- a first substrate;
- a first insulating layer underneath the first substrate;
- a light-blocking layer and a coloring layer each underneath the first substrate with the first insulating layer therebetween;
- a second substrate below the first substrate;
- a second insulating layer over the second substrate;
- a transistor comprising a semiconductor layer, a gate electrode, a source electrode, and a drain electrode on the second substrate with the second insulating layer therebetween;
- a transistor insulating layer over the transistor;
- a light-emitting element over the transistor with the transistor insulating layer therebetween, the light-emitting element including a first electrode, a second electrode, and an EL layer between the first electrode and the second electrode, the first electrode being electrically connected to the semiconductor layer via one of the source electrode and the drain electrode;
- a first bonding layer between the first substrate and the first insulating layer;
- a second bonding layer between the second substrate and the second insulating layer;
- and
- a third bonding layer between the second electrode and the first substrate and in contact with the second electrode,
- wherein each of the first to the third bonding layers comprises an adhesive material,
- wherein the first and the second substrates are flexible, and
- wherein the display device can have a bend portion displaying an image and so that the second substrate is positioned on an outer side and the first substrate on an inner side in the bend portion.
12 more elements
A display device comprising:
- a first substrate;
- a touch sensor over the first substrate;
- a first insulating layer underneath the first substrate;
- a light-blocking layer and a coloring layer each underneath the first substrate with the first insulating layer therebetween;
- a second substrate below the first substrate;
- a second insulating layer over the second substrate;
- a transistor comprising a semiconductor layer, a gate electrode, a source electrode, and a drain electrode on the second substrate with the second insulating layer therebetween;
- a transistor insulating layer over the transistor;
- a light-emitting element over the transistor with the transistor insulating layer therebetween, the light-emitting element including a first electrode, a second electrode, and an EL layer between the first electrode and the second electrode, the first electrode being electrically connected to the semiconductor layer via one of the source electrode and the drain electrode;
- a first bonding layer between the first substrate and the first insulating layer;
- a second bonding layer between the second substrate and the second insulating layer;
- and
- a third bonding layer between the second electrode and the first substrate and in contact with the second electrode,
- wherein each of the first to the third bonding layers comprises an adhesive material,
- wherein the first and the second substrates are flexible, and
- wherein the display device can have a bend portion displaying an image so that the second substrate is positioned on an outer side and the first substrate on an inner side in the bend portion.
13 more elements
Dependencies are inferred from the claim text.