Display device
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.
1. A wrist-watch comprising:
a housing;
a band attached to the housing; and
a display device incorporated in the housing, the display device comprising:
a flexible substrate;
a display portion over the flexible substrate;
a connection terminal to which a signal from an outside is input, over the flexible substrate; and
a wiring electrically connecting the connection terminal with the display portion, over the flexible substrate,
wherein the wiring includes a first wiring and a second wiring,
wherein each of the first wiring and the second wiring includes a first portion and a second portion,
wherein the first portion has a same width as the second portion,
wherein at least two openings are opened in the first portion, and
wherein at least the first portion is bent.
2. The wrist-watch according to claim 1 ,
wherein the first portion has a smaller thickness than the second portion.
3. The wrist-watch according to claim 1 ,
wherein the flexible substrate includes a projecting part, and
wherein the connection terminal and part of the wiring are provided over the projecting part.
4. The wrist-watch according to claim 3 ,
wherein the projecting part can be folded toward a rear side of the flexible substrate.
5. The wrist-watch according to claim 1 , further comprising an IC over the flexible substrate,
wherein the IC is electrically connected to the display portion via a third wiring, and
wherein the IC is provided between the first portion and the connection terminal.
6. The wrist-watch according to claim 1 ,
wherein the first portion includes a first conductive film, and
wherein the second portion includes a stack of the first conductive film and a second conductive film.
7. The wrist-watch according to claim 6 ,
wherein a gate electrode of a transistor included in the display portion is formed by processing the same film as one of the first conductive film and the second conductive film, and
wherein source and drain electrodes of the transistor are formed by processing the same film as the other of the first conductive film and the second conductive film.
8. A wrist-watch comprising:
a housing;
a band attached to the housing; and
a display device incorporated in the housing, the display device comprising:
a flexible substrate;
a display portion over the flexible substrate;
a connection terminal to which a signal from an outside is input, over the flexible substrate; and
a wiring electrically connecting the connection terminal with the display portion, over the flexible substrate,
wherein the wiring includes a first wiring and a second wiring,
wherein each of the first wiring and the second wiring includes a first portion and a second portion,
wherein the first portion has a same width as the second portion,
wherein at least two openings are opened in the first portion,
wherein at least the first portion is bent, and
wherein a bending direction of the first portion is not the same as an extending direction of the wiring.
9. The wrist-watch according to claim 8 ,
wherein the first portion has a smaller thickness than the second portion.
10. The wrist-watch according to claim 8 ,
wherein the flexible substrate includes a projecting part, and
wherein the connection terminal and part of the wiring are provided over the projecting part.
11. The wrist-watch according to claim 10 ,
wherein the projecting part can be folded toward a rear side of the flexible substrate.
12. The wrist-watch according to claim 8 , further comprising an IC over the flexible substrate,
wherein the IC is electrically connected to the display portion via a third wiring, and
wherein the IC is provided between the first portion and the connection terminal.
13. The wrist-wwatch according to claim 8 ,
wherein the first portion includes a first conductive film, and
wherein the second portion includes a stack of the first conductive film and a second conductive film.
14. The wrist-watch according to claim 13 ,
wherein a gate electrode of a transistor included in the display portion is formed by processing the same film as one of the first conductive film and the second conductive film, and
wherein source and drain electrodes of the transistor are formed by processing the same film as the other of the first conductive film and the second conductive film.
15. A wrist-watch comprising:
a housing;
a band attached to the housing; and
a display device incorporated in the housing, the display device comprising:
a flexible substrate;
a display portion over the flexible substrate;
a first connection terminal to which a signal from an outside is configured to be input, over the flexible substrate;
a second connection terminal to which a signal from the outside is configured to be input, over the flexible substrate;
a first wiring electrically connecting the first connection terminal with the display portion, over the flexible substrate; and
a second wiring electrically connecting the second connection terminal with the display portion, over the flexible substrate,
wherein each of the first wiring and the second wiring includes at least two openings, and
wherein each of the first wiring and the second wiring is bent.
16. The wrist-watch according to claim 15 ,
wherein the flexible substrate includes a projecting part, and
wherein the first and second connection terminals and part of the first and second wirings are provided over the projecting part.
17. The wrist-watch according to claim 16 ,
wherein, the projecting part can be folded toward a rear side of the flexible substrate.
18. The wrist-watch according to claim 15 , further comprising an IC over the flexible substrate,
wherein the IC is electrically connected to the display portion via a third wiring.
19. A wrist-watch comprising:
a housing;
a band attached to the housing; and
a display device incorporated in the housing, the display device comprising:
a flexible substrate;
a display portion over the flexible substrate;
a first connection terminal to which a signal from an outside is configured to be input, over the flexible substrate;
a second connection terminal to which a signal from the outside is configured to be input, over the flexible substrate;
a first wiring electrically connecting the first connection terminal with the display portion, over the flexible substrate; and
a second wiring electrically connecting the second connection terminal with the display portion, over the flexible substrate,
wherein each of the first wiring and the second wiring includes at least two openings,
wherein each of the first wiring and the second wiring is bent, and
wherein a bending direction of the first wiring and the second wiring is not the same as an extending direction of the first wiring and the second wiring.
20. The wrist-watch according to claim 19 ,
wherein the flexible substrate includes a projecting part, and
wherein the first and second connection terminals and part of the first and second wirings are provided over the projecting part.
21. The wrist-watch according to claim 20 ,
wherein the projecting part can be folded toward a rear side of the flexible substrate.
22. The wrist-watch according to claim 19 , further comprising an IC over the flexible substrate,
wherein the IC is electrically connected to the display portion via a third wiring.