IP Library Granted Patent US 10,642,411
Granted Patent B2
US 10,642,411 · App. 16/019,717 · Granted May 5, 2020

Touchscreen

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Quick Facts
Patent No.
US 10,642,411
App. No.
16/019,717
Granted
May 5, 2020
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 (61)

1. A touch panel comprising:

a substrate including a surface;

a plurality of X electrodes that extend above the surface of the substrate in a first direction;

a plurality of Y electrodes that extend above the surface of the substrate in the second direction so as to intersect the X electrodes; 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,

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 surface of the substrate,

wherein a planar shape of the pedestal layer viewed from the direction perpendicular to the surface of the substrate is more rounded than that of the intersection portion of the X electrode,

wherein the intersection portion of X electrodes has a width in the second direction,

wherein the intersection portion of Y electrodes has a width in the first direction, and

wherein the width of the intersection portion of Y electrodes is wider than that of the intersection portion of the X electrodes.

2. The touch panel according to claim 1 , wherein the planar shape 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 the direction perpendicular to the surface of the substrate.

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

4. The 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.

5. The 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 the direction perpendicular to the surface of the substrate.

6. The touch panel according to claim 1 , wherein both ends of adjacent electrode portions of the X electrodes in the first direction are formed under the pedestal layer.

7. The touch panel according to claim 1 , wherein the pedestal layer is formed in a tapered shape, a thickness of which gradually increases from an edge of the pedestal layer toward a planarized portion on an opposite side to a surface coming into contact with the substrate.

8. The touch panel according to claim 1 , 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 touch panel according to claim 1 , 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 surface of the substrate.

10. The touch panel according to claim 1 , further comprising:

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

11. A touch panel comprising:

a substrate including a surface;

a plurality of X electrodes that extend above the surface of the substrate in a first direction;

a plurality of Y electrodes that extend above the surface of the substrate in a second direction 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 intersecting the intersection portion of the X electrode has a nonlinear shape when viewed from a direction perpendicular to the surface of the substrate,

wherein a planar shape of the pedestal layer viewed from the direction perpendicular to the surface of the substrate is more rounded than that of the intersection portion of the X electrode,

wherein the intersection portion of X electrodes has a width in the second direction,

wherein the intersection portion of Y electrodes has a width in the first direction, and

wherein the width of the intersection portion of Y electrodes is wider than that of the intersection portion of the X electrodes.

12. The touch panel according to claim 11 , wherein the planar shape 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 the direction perpendicular to the surface of the substrate.

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

14. The 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.

15. The 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 the direction perpendicular to the surface of the substrate.

16. The touch panel according to claim 11 , wherein both ends of adjacent electrode portions of the X electrodes in the first direction are formed under the pedestal layer.

17. The touch panel according to claim 11 , wherein the pedestal layer is formed in a tapered shape, a thickness of which gradually increases from an edge of the pedestal layer toward a planarized portion on an opposite side to a surface coming into contact with the substrate.

18. The touch panel according to claim 11 , 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 touch panel according to claim 11 , 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 surface of the substrate.

20. The touch panel according to claim 1 , wherein the pedestal layer has a first region which overlaps the electrode portion of the X electrode,

the intersection portion of X electrode has a second region which overlaps the first region,

a part of the first region has a first width in the second direction,

the second region has a second width in the second direction, and

the first width is smaller than the second width.

21. The touch panel according to claim 11 , wherein the pedestal layer has a first region which overlaps the electrode portion of the X electrode,

the intersection portion of X electrode has a second region which overlaps the first region,

a part of the first region has a first width in the second direction,

the second region has a second width in the second direction, and

the first width is smaller than the second width.

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