Display device
AssigneeSemiconductor Energy Laboratory Co., Ltd.
InventorsTakuya Kawata, Akihiro Chida
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Abstract
A display device, an electronic device, or a lighting device that is unlikely to be broken is provided. A flexible first substrate and a flexible second substrate overlap with each other with a display element provided therebetween. A flexible third substrate is bonded on the outer surface of the first substrate, and a flexible fourth substrate is bonded on the outer surface of the second substrate. The third substrate is formed using a material softer than the first substrate, and the fourth substrate is formed using a material softer than the second substrate.
Claims12
A display device comprising:
- a first substrate and a second substrate overlapping with each other with a display element provided therebetween;
- and
- a third substrate and a fourth substrate overlapping with each other with the first substrate and the second substrate provided therebetween,
- wherein the first substrate and the second substrate are in contact with the third substrate and the fourth substrate, respectively,
- wherein each of the first substrate and the second substrate includes an organic resin material,
- wherein a Young's modulus of the first substrate and the second substrate is larger than or equal to 1 GPa and smaller than or equal to 100 GPa,
- wherein a Young's modulus of the third substrate and the fourth substrate is smaller than or equal to one fiftieth of the Young's modulus of the first substrate and the second substrate, and
- wherein the display device is configured to be bent at any part.
A display device comprising:
- a first substrate and a second substrate overlapping with each other with a display element provided therebetween;
- and
- a third substrate and a fourth substrate overlapping with each other with the first substrate and the second substrate provided therebetween,
- wherein the first substrate and the second substrate are in contact with the third substrate and the fourth substrate, respectively,
- wherein a Young's modulus of the first substrate and the second substrate is larger than or equal to 1 GPa and smaller than or equal to 100 GPa,
- wherein a Young's modulus of the third substrate and the fourth substrate is smaller than or equal to one fiftieth of the Young's modulus of the first substrate and the second substrate,
- wherein the third substrate and the fourth substrate comprise silicone rubber or fluorine rubber, and
- wherein the display device is configured to be bent at any part.
Dependencies are inferred from the claim text.