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US 12,501,801 B2Granted
Display device
AssigneeSemiconductor Energy Laboratory Co., Ltd.
InventorsShunpei Yamazaki, Kensuke Yoshizumi
Life of this patent
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Abstract
One embodiment of the present invention provides a highly reliable display device. In particular, a display device to which a signal or a power supply potential can be supplied stably is provided. Further, a bendable display device to which a signal or a power supply potential can be supplied stably is provided. The display device includes, over a flexible substrate, a display portion, a plurality of connection terminals to which a signal from an outside can be input, and a plurality of wirings. One of the plurality of wirings electrically connects one of the plurality of connection terminals to the display portion. The one of the plurality of wirings includes a first portion including a plurality of separate lines and a second portion in which the plurality of lines converge.
Claims9
A display device comprising:
- a display portion over a substrate;
- a plurality of connection terminals over the substrate;
- and
- a plurality of wirings over the substrate, the plurality of wirings being provided between the display portion and the plurality of connection terminals,
- wherein the substrate comprises a bending portion and a flat portion provided continuously from the bending portion,
- wherein at least one of the plurality of wirings comprises a first portion that is split into a plurality of regions by at least one opening and a second portion where the plurality of regions converge,
- wherein the second portion has a first wiring width,
- wherein the first portion and the at least one opening comprise a first region located at the bending portion and a second region located at the flat portion,
- wherein the second portion comprises a region located at the flat portion,
- wherein the first region of the first portion has a second wiring width which includes the at least one opening,
- wherein the second wiring width is larger than the first wiring width,
- wherein the at least one of the plurality of wirings comprises a first conductive layer and a second conductive layer,
- wherein the second conductive layer comprises a region in contact with a top surface of the first conductive layer in the second portion,
- wherein, in the first portion, the second conductive layer comprises a region not overlapping with the first conductive layer,
- wherein the first conductive layer comprises the same material as a gate electrode of a transistor provided in the display portion, and
- wherein the second conductive layer comprises the same material as one of a source electrode and a drain electrode of the transistor.
13 more elements
A display device comprising:
- a display portion over a substrate;
- a plurality of connection terminals over the substrate;
- and
- a plurality of wirings over the substrate, the plurality of wirings being provided between the display portion and the plurality of connection terminals,
- wherein the substrate comprises a bending portion and a flat portion provided continuously from the bending portion,
- wherein at least one of the plurality of wirings comprises a first portion that is split into a plurality of regions by at least one opening and a second portion where the plurality of regions converge,
- wherein the second portion has a first wiring width,
- wherein the first portion and the at least one opening comprise a first region located at the bending portion and a second region located at the flat portion,
- wherein the second portion comprises a region located at the flat portion,
- wherein the first region of the first portion has a second wiring width which includes the at least one opening,
- wherein the second wiring width is larger than the first wiring width,
- wherein the at least one of the plurality of wirings comprises a first conductive layer and a second conductive layer,
- wherein the second conductive layer comprises a region in contact with the first conductive layer in the second portion, and
- wherein, in the first portion, the second conductive layer comprises a region not overlapping with the first conductive layer.
11 more elements
A display device comprising:
- a display portion over a substrate;
- a plurality of connection terminals over the substrate;
- and
- a plurality of wirings over the substrate, the plurality of wirings being provided between the display portion and the plurality of connection terminals,
- wherein the substrate comprises a bending portion and a flat portion provided continuously from the bending portion,
- wherein at least one of the plurality of wirings comprises a first portion that is split into a plurality of regions by at least one opening and a second portion where the plurality of regions converge,
- wherein the second portion has a first wiring width,
- wherein the first portion and the at least one opening comprise a first region located at the bending portion and a second region located at the flat portion,
- wherein the second portion comprises a region located at the flat portion,
- wherein the first region of the first portion has a second wiring width which includes the at least one opening,
- wherein the second wiring width is larger than the first wiring width,
- wherein the at least one of the plurality of wirings comprises a first conductive layer and a second conductive layer,
- wherein a first insulating layer comprises a region provided under the first conductive layer,
- wherein a second insulating layer comprises a region provided over the first conductive layer and under the second conductive layer,
- wherein the first insulating layer is connected to a base insulating layer provided in the display portion,
- wherein the second insulating layer is connected to a gate insulating layer of the transistor,
- wherein the second conductive layer comprises a region in contact with a top surface of the first conductive layer in the second portion, and
- wherein, in the first portion, the second conductive layer comprises a region in contact with the first insulating layer which does not overlap with the first conductive layer.
15 more elements
Dependencies are inferred from the claim text.