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US 11,950,474 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.
Claims3
An electronic device comprising:
- a display device, the display device comprising:
- a protruding portion protruding from part of a short-side of the display device;
- a first substrate having flexibility;
- an oxide layer over the first substrate;
- a first conductive layer and a second conductive layer over the oxide layer;
- a first insulating layer over the first conductive layer and the second conductive layer;
- a third conductive layer over the first insulating layer and overlapping with the first conductive layer;
- a fourth conductive layer over the first insulating layer;
- a light-emitting element over the fourth conductive layer;
- an adhesive layer over the light-emitting element;
- and
- a second substrate over the adhesive layer,
- wherein the third conductive layer is electrically connected to the first conductive layer,
- wherein the third conductive layer is configured to function as one of a plurality of first wirings,
- wherein the second conductive layer is configured to function as a gate electrode of a first transistor,
- wherein the fourth conductive layer is configured to function as one of a source electrode and a drain electrode of the first transistor,
- wherein the third conductive layer and the fourth conductive layer are formed from a same layer,
- wherein the protruding portion comprises a connection terminal and a bending portion,
- wherein the bending portion is bent and the protruding portion is folded back so that a first portion of a first surface of the first substrate faces a second portion of the first surface of the first substrate, whereby a surface of the connection terminal overlaps with a back side of a display portion,
- wherein a source driver circuit provided over the protruding portion overlaps with the back side of the display portion, and
- wherein the display device is incorporated into the electronic device with the bending portion folded back.
18 more elements
An electronic device comprising:
- a display device, the display device comprising:
- a protruding portion protruding from part of a short-side of the display device;
- a first substrate having flexibility;
- an oxide layer over the first substrate;
- a first conductive layer and a second conductive layer over the oxide layer;
- a first insulating layer over the first conductive layer and the second conductive layer;
- a third conductive layer over the first insulating layer and overlapping with the first conductive layer;
- a fourth conductive layer over the first insulating layer;
- a light-emitting element over the fourth conductive layer;
- an adhesive layer over the light-emitting element;
- and
- a second substrate over the adhesive layer,
- wherein the third conductive layer is electrically connected to the first conductive layer,
- wherein the third conductive layer is configured to function as one of a plurality of first wirings,
- wherein the second conductive layer is configured to function as a gate electrode of a first transistor,
- wherein the fourth conductive layer is configured to function as one of a source electrode and a drain electrode of the first transistor,
- wherein the third conductive layer and the fourth conductive layer are formed from a same layer,
- wherein the protruding portion comprises a connection terminal and a bending portion,
- wherein the bending portion is bent and the protruding portion is folded back so that a first portion of a first surface of the first substrate faces a second portion of the first surface of the first substrate, whereby a surface of the connection terminal overlaps with a back side of a display portion,
- wherein a source driver circuit provided over the protruding portion overlaps with the back side of the display portion,
- wherein the display device is incorporated into the electronic device with the bending portion folded back,
- wherein, in a short-side direction of the display device, each of two end portions of a short-side of the protruding portion is provided farther inside than end portions of the short-side of the display device, and
- wherein the plurality of first wirings has a region comprising an opening and a branching portion where the plurality of first wirings branches into a plurality of second wirings with the opening therebetween.
20 more elements
An electronic device comprising:
- a display device, the display device comprising:
- a protruding portion protruding from part of a short-side of the display device;
- a first substrate having flexibility;
- an oxide layer over the first substrate;
- a first conductive layer and a second conductive layer over the oxide layer;
- a first insulating layer over the first conductive layer and the second conductive layer;
- a third conductive layer over the first insulating layer and overlapping with the first conductive layer;
- a fourth conductive layer over the first insulating layer;
- a light-emitting element over the fourth conductive layer;
- an adhesive layer over the light-emitting element;
- and
- a second substrate over the adhesive layer,
- wherein the third conductive layer is electrically connected to the first conductive layer,
- wherein the third conductive layer is configured to function as one of a plurality of first wirings,
- wherein the second conductive layer is configured to function as a gate electrode of a first transistor,
- wherein the fourth conductive layer is configured to function as one of a source electrode and a drain electrode of the first transistor,
- wherein the third conductive layer and the fourth conductive layer are formed from a same layer,
- wherein the protruding portion comprises a connection terminal and a bending portion,
- wherein the bending portion is bent and the protruding portion is folded back so that a first portion of a first surface of the first substrate faces a second portion of the first surface of the first substrate, whereby a surface of the connection terminal overlaps with a back side of a display portion,
- wherein a source driver circuit provided over the protruding portion overlaps with the back side of the display portion,
- wherein the display device is incorporated into the electronic device with the bending portion folded back,
- wherein, in a short-side direction of the display device, each of two end portions of a short-side of the protruding portion is provided farther inside than end portions of the short-side of the display device,
- wherein, in the case where the display device is provided so that the protruding portion is located on the short-side of the display device without folding the protruding portion back, the plurality of first wirings that pass through the bending portion is provided from each of a first portion, a second portion, and a third portion of the short-side of the display device,
- wherein the plurality of first wirings is provided so as to come together from each of the first portion, the second portion, and the third portion of the short-side of the display device toward the protruding portion,
- wherein the plurality of first wirings has a region comprising an opening and a branching portion where the plurality of first wirings branches into a plurality of second wirings with the opening therebetween, and
- wherein the bending portion is curved to overlap with the branching portion.
23 more elements
Dependencies are inferred from the claim text.