IP Library Granted Patent US 9,465,498
Granted Patent B2
US 9,465,498 · App. 14/719,415 · Granted Oct 11, 2016

Touchscreen

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Quick Facts
Patent No.
US 9,465,498
App. No.
14/719,415
Granted
Oct 11, 2016
Kind
B2
Abstract

A touchscreen includes a plurality of X electrodes extending in a first direction and arranged in parallel in a second direction, a plurality of Y electrodes extending in the second direction so as to intersect the X electrodes and arranged in parallel in the first direction, and pedestal layers formed at respective intersections between the plurality of X electrodes and the plurality of Y electrodes, wherein an intersection portion of each Y electrode is formed under the pedestal layer, wherein a part of an intersection portion of each X electrode is formed on the pedestal layer and both ends thereof are electrically connected to adjacent electrode portions of the X electrodes, and wherein a profile of a portion of the pedestal layer intersecting the intersection portion of the X electrode has a nonlinear shape when viewed from a direction perpendicular to the substrate.

Claims (51)

1. A display device with touch panel comprising:

a display panel; and

a touch panel attached to the display panel,

the touch panel comprising:

a substrate;

a plurality of X electrodes that extend above the substrate in a first direction and are arranged in a second direction intersecting the first direction;

a plurality of Y electrodes that extend above the substrate in the second direction so as to intersect the X electrodes and are arranged in the first direction; and

pedestal layers that are formed at respective intersections between the plurality of X electrodes and the plurality of Y electrodes,

wherein the Y electrode includes an intersection portion intersecting the X electrode and an electrode portion formed in the same layer as the X electrode so as to be separated from the X electrode,

wherein the X electrode includes an intersection portion intersecting the Y electrode and an electrode portion formed in the same layer as the Y electrode so as to be separated from the Y electrode,

wherein the intersection portion of Y electrode is formed under the pedestal layer,

wherein a part of the intersection portion of X electrode is formed on the pedestal layer and both ends of the intersection portion of X electrode are electrically connected to adjacent electrode portions of the X electrodes, and

wherein a profile of a portion of the pedestal layer is more rounded than a profile of the intersection portion of the X electrode.

2. The display device with touch panel according to claim 1 , wherein the profile of the pedestal layer is a polygonal shape of which the number of sides is equal to or more than a pentagonal shape when viewed from a direction perpendicular to the substrate.

3. The display device with touch panel according to claim 1 , wherein the profile of the pedestal layer is a circular shape when viewed from a direction perpendicular to the substrate.

4. The display device with touch panel according to claim 2 , wherein both ends of the electrode portion of the Y electrode in the first direction and both ends of the electrode portion of the X electrode in the second direction are formed under the pedestal layer.

5. The display device with touch panel according to claim 1 , wherein the pedestal layer has an elliptical shape of which a long axis direction is an extending direction of the intersection portion of the X electrode when viewed from a direction perpendicular to the substrate.

6. The display device with touch panel according to claim 5 , wherein both ends of each of the electrode portions of the plurality of X electrodes in the second direction are formed under the pedestal layer.

7. The display device with touch panel according to claim 6 , wherein the pedestal layer is formed in a tapered shape of which a thickness of a side surface gradually increases toward a planarized portion on an opposite side to a surface coming into contact with the substrate.

8. The display device with touch panel according to claim 7 , further comprising:

an index matching layer that is formed on the substrate,

wherein the X electrodes, the Y electrodes, and the pedestal layers are formed on the index matching layer.

9. The display device with touch panel according to claim 8 , wherein the electrode portion of the X electrode and the electrode portion of the Y electrode have a rhombic shape when viewed from the direction perpendicular to the substrate.

10. The display device with touch panel according to claim 9 , further comprising:

a protective layer that is formed so as to cover the X electrodes and the Y electrodes.

11. A display device with touch panel comprising:

a display panel; and

a touch panel attached to the display panel,

the touch panel comprising:

a substrate;

a plurality of X electrodes that extend above the substrate;

a plurality of Y electrodes that extend above the substrate so as to intersect the X electrodes;

a plurality of pedestal layers that are formed at intersections of the plurality of X electrodes and the plurality of Y electrodes; and

a protective layer formed so as to cover the X electrode, the Y electrode and the pedestal layer,

wherein the Y electrode includes an intersection portion intersecting the X electrode and an electrode portion formed in the same layer as the X electrode so as to be separated from the X electrode,

wherein the X electrode includes an intersection portion intersecting the Y electrode and an electrode portion formed in the same layer as the Y electrode so as to be separated from the Y electrode,

wherein the intersection portion of Y electrode is formed under the pedestal layer,

wherein a part of the intersection portion of X electrode is formed on the pedestal layer and both ends of the intersection portion of the X electrode are electrically connected to adjacent electrode portions of the X electrode,

wherein a profile of a portion of the pedestal layer is more rounded than a profile of the intersection portion of the X electrode, and

wherein the protective layer is formed on the electrode portion of the X electrode and the Y electrode.

12. The display device with touch panel according to claim 11 , wherein the profile of the pedestal layer is a polygonal shape of which the number of sides is equal to or more than a pentagonal shape when viewed from a direction perpendicular to the substrate.

13. The display device with touch panel according to claim 11 , wherein the profile of the pedestal layer is a circular shape when viewed from a direction perpendicular to the substrate.

14. The display device with touch panel according to claim 12 , wherein both ends of the electrode portion of the Y electrode in a first direction and both ends of the electrode portion of the X electrode in a second direction are formed under the pedestal layer.

15. The display device with touch panel according to claim 11 , wherein the pedestal layer has an elliptical shape of which a long axis direction is an extending direction of the intersection portion of the X electrode when viewed from a direction perpendicular to the substrate.

16. The display device with touch panel according to claim 15 , wherein both ends of each of the electrode portions of the plurality of X electrodes in a second direction are formed under the pedestal layer.

17. The display device with touch panel according to claim 16 , wherein the pedestal layer is formed in a tapered shape of which a thickness of a side surface gradually increases toward a planarized portion on an opposite side to a surface coming into contact with the substrate.

18. The display device with touch panel according to claim 17 , further comprising:

an index matching layer that is formed on the substrate,

wherein the X electrodes, the Y electrodes, and the pedestal layers are formed on the index matching layer.

19. The display device with touch panel according to claim 18 , wherein the electrode portion of the X electrode and the electrode portion of the Y electrode have a rhombic shape when viewed from the direction perpendicular to the substrate.

20. The display device with touch panel according to claim 3 , wherein both ends of the electrode portion of the Y electrode in the first direction and both ends of the electrode portion of the X electrode in the second direction are formed under the pedestal layer.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 22, 2025
From: JAPAN DISPLAY INC.
To: MAGNOLIA WHITE CORPORATION
Reel/Frame 072130/0313 →