Display device
View Patent ↗A display device according to an embodiment of the present invention includes: a display panel including a display region, a backside region, and a curvature region, wherein the display panel comprises: an insulating base material disposed on the display region, the curvature region, and the backside region; a wiring layer that is disposed on an outer surface side of the insulating base material, and comprises an insulating layer and a wiring; a display element that is provided on an outer surface side of the wiring layer in the display region, and is electrically connected to the wiring; and a first protection sheet that is provided on an inner surface side of the insulating base material in the display region, and includes a plurality of projection parts that protrude toward a side of the curvature region from a side of the display region.
1. A display device comprising:
a display panel including a display region, a backside region that is opposed to at least a part of the display region, and a curvature region that connects the display region and the backside region,
wherein the display panel comprises:
an insulating base material disposed on the display region, the curvature region, and the backside region;
a wiring layer that is disposed on a first surface side of the insulating base material, and comprises an insulating layer and a wiring;
a display element that is provided on a first surface side of the wiring layer in the display region with the wiring layer positioned between the insulating base material and the display element, and is electrically connected to the wiring; and
a first protection sheet that is provided on a second surface side of the insulating base material opposite the first surface side of the insulating base material, in the display region, and includes a plurality of projection parts that protrude toward a side of the curvature region from a side of the display region.
2. The display device according to claim 1 ,
wherein shapes of the plurality of projection parts of the first protection sheet are almost triangular shapes whose apexes are rounded.
3. The display device according to Claim 1 ,
wherein the display panel further comprises:
a driver IC provided on the first surface side of the wiring layer in the backside region; and
a signal line that connects the display element and the driver IC, and
wherein the signal line is disposed on the first surface side of the insulating base material at a position corresponding to somewhere between apexes of two neighboring projection parts from among the plurality of projection parts of the first protection sheet.
4. The display device according to Claim 1 ,
wherein the display panel further comprises:
a driver IC provided on the first surface side of the wiring layer in the backside region;
a signal line that connects the display element and the driver IC; and
an electric power source line that supplies electric power to the display element,
wherein a distribution density of the plurality of projection parts of the first protection sheet is not uniform,
the signal line is disposed at a position corresponding to a region where the distribution density of the plurality of projection parts is high, and
the electric power source line is disposed at a position corresponding to a region where the distribution density of the plurality of projection parts is low.
5. The display device according to claim 4 ,
wherein on the first protection sheet the region where the distribution density of the plurality of projection parts is low is farther from a central part of the first protection sheet than the region where the distribution density of the plurality of projection parts is high.
6. The display device according to claim 1 ,
wherein a thickness of the first protection sheet becomes thinner as it extends from a side of the display region to a side of the curvature region.
7. The display device according to claim 1 ,
wherein the display panel further comprises a third protection sheet that is disposed at least in the curvature region on an opposite side of the insulating base material than the first protection sheet, and
a part of the third protection sheet and a part of the first protection sheet are opposed to each other with an interposition of the insulating base material and the wiring layer.
8. The display device according to claim 1 ,
wherein an intersection angle of one of the plurality of projection parts that the first protection sheet includes and an edge of the insulating base material is an obtuse angle.
9. The display device according to claim 1 ,
wherein the display panel further comprises a second protection sheet that is disposed on the second surface side of the insulating base material in the backside region and includes a plurality of projection parts that protrude from a side of the backside region toward a side of the curvature region.
10. The display device according to claim 9 ,
wherein at least one of apexes of the plurality of projection parts of the first protection sheet and at least one of apexes of the plurality of projection parts of the second protection sheet are opposed to each other.
11. The display device according to claim 9 ,
wherein the display panel further comprises:
a driver IC provided on the first surface side of the wiring layer in the backside region; and
a signal line that connects the display element and the driver IC, and
wherein the signal line extends on the first surface side of the insulating base material from a position corresponding to a side of one of the projection parts having triangular shapes of the first protection sheet to a position corresponding to a side of one of the projection parts having triangular shapes of the second protection sheet.
12. The display device according to claim 9 ,
wherein the signal line is disposed on the first surface side of the insulating base material at a position corresponding to somewhere between apexes of two neighboring projection parts from among the plurality of projection parts of the second protection sheet.
13. The display device according to claim 9 ,
wherein the display panel further comprises:
a driver IC provided on the first surface side of the wiring layer in the backside region;
a signal line that connects the display element and the driver IC; and
an electric power source line that supplies electric power to the display element, and
wherein a distribution density of the plurality of projection parts of the second protection sheet is not uniform,
the signal line is disposed at a position corresponding to a region where the distribution density of the plurality of projection parts is high, and
the electric power source line is disposed at a position corresponding to a region where the distribution density of the plurality of projection parts is low.
14. The display device according to claim 13 ,
wherein on the second protection sheet the region where the distribution density of the plurality of projection parts is low is farther from a central part of the second protection sheet than the region where the distribution density of the plurality of projection parts is high.
15. The display device according to claim 9 ,
wherein a thickness of the second protection sheet becomes thinner as it extends from a side of the backside region side to a side of the curvature region.
16. The display device according to claim 9 ,
wherein the display panel further comprises a third protection sheet that is disposed at least in the curvature region on an opposite side of the insulating base material than the first protection sheet, and
a part of the third protection sheet and a part of the second protection sheet are opposed to each other with an interposition of the insulating base material and the wiring layer.
17. The display device according to claim 9 ,
wherein an intersection angle of one of the plurality of projection parts that the second protection sheet includes and an edge of the insulating base material is an obtuse angle.