Touch panel and display device
First Claim
1. A display device comprising:
- a touch panel including;
a plurality of first interconnections arranged along a first direction, each of the first interconnections extending along a second direction intersecting with the first direction;
a plurality of second interconnections arranged along a third direction intersecting with the first direction, each of the second interconnections extending along a fourth direction intersecting with the third direction;
a plurality of sensor units each provided in an intersection portion between each of the first interconnections and each of the second interconnections, each of the sensor units including a first ferromagnetic layer, a second ferromagnetic layer, and an intermediate layer containing a nonmagnetic material, allowing a current to be passed between the first ferromagnetic layer and the second ferromagnetic layer via the intermediate layer, having one end connected to each of the first interconnections, and having another end connected to each of the second interconnections; and
a control unit connected to the first interconnections and the second interconnections,an electric resistance between the first ferromagnetic layer of each of the sensor units and the second ferromagnetic layer of each of the sensor units being configured to change between a high resistance value and a low resistance value lower than the high resistance value in accordance with a stress applied to the sensor units,the control unit being configured to sense a change in the electric resistance in the sensor units;
a first transistor provided in each of the intersection portions;
a pixel electrode provided in each of the intersection portions and directly or indirectly connected to one end of each of the first transistors; and
an optical layer configured to emit light or change an optical property of the optical layer including at least one of birefringence, optical rotation, scattering, diffraction, and absorption based on a charge supplied to the pixel electrode via the first transistor,whereina gate of each of the first transistors is connected to each of the first interconnection,another end of each of the plurality of first transistors is connected to each of the plurality of second interconnections,the low resistance value is higher than an electric resistance between the one end of the first transistors and the other end of the first transistors when a portion between the one end of the first transistors and the other end of the first transistors is in a conduction state, andthe high resistance value is lower than an electric resistance between the one end of the first transistors and the other end of the first transistors when a portion between the one end of the first transistors and the other end of the first transistors is in a non-conduction state.
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Accused Products
Abstract
According to one embodiment, a touch panel includes first interconnections, second interconnections, sensor units and a control unit. The first interconnections are arranged along a first direction, and extend along a second direction intersecting with the first direction. The second interconnections are arranged along a third direction intersecting with the first direction, and extend along a fourth direction intersecting with the third direction. The sensor units are provided in intersection portions of the first and second interconnections, include first and second ferromagnetic layers, and an intermediate layer, allow a current to be passed, and have one end connected to the first interconnections and another end connected to the second interconnections. The control unit is connected to the first and second interconnections. An electric resistance of the sensor units changes in accordance with a stress applied. The control unit senses a change in the electric resistance.
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Citations
14 Claims
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1. A display device comprising:
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a touch panel including; a plurality of first interconnections arranged along a first direction, each of the first interconnections extending along a second direction intersecting with the first direction; a plurality of second interconnections arranged along a third direction intersecting with the first direction, each of the second interconnections extending along a fourth direction intersecting with the third direction; a plurality of sensor units each provided in an intersection portion between each of the first interconnections and each of the second interconnections, each of the sensor units including a first ferromagnetic layer, a second ferromagnetic layer, and an intermediate layer containing a nonmagnetic material, allowing a current to be passed between the first ferromagnetic layer and the second ferromagnetic layer via the intermediate layer, having one end connected to each of the first interconnections, and having another end connected to each of the second interconnections; and a control unit connected to the first interconnections and the second interconnections, an electric resistance between the first ferromagnetic layer of each of the sensor units and the second ferromagnetic layer of each of the sensor units being configured to change between a high resistance value and a low resistance value lower than the high resistance value in accordance with a stress applied to the sensor units, the control unit being configured to sense a change in the electric resistance in the sensor units; a first transistor provided in each of the intersection portions; a pixel electrode provided in each of the intersection portions and directly or indirectly connected to one end of each of the first transistors; and an optical layer configured to emit light or change an optical property of the optical layer including at least one of birefringence, optical rotation, scattering, diffraction, and absorption based on a charge supplied to the pixel electrode via the first transistor, wherein a gate of each of the first transistors is connected to each of the first interconnection, another end of each of the plurality of first transistors is connected to each of the plurality of second interconnections, the low resistance value is higher than an electric resistance between the one end of the first transistors and the other end of the first transistors when a portion between the one end of the first transistors and the other end of the first transistors is in a conduction state, and the high resistance value is lower than an electric resistance between the one end of the first transistors and the other end of the first transistors when a portion between the one end of the first transistors and the other end of the first transistors is in a non-conduction state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A display device comprising:
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a touch panel including; a plurality of first interconnections arranged along a first direction, each of the first interconnections extending along a second direction intersecting with the first direction; a plurality of second interconnections arranged along a third direction intersecting with the first direction, each of the second interconnections extending along a fourth direction intersecting with the third direction; a plurality of sensor units each provided in an intersection portion between each of the first interconnections and each of the second interconnections, each of the sensor units including a first ferromagnetic layer, a second ferromagnetic layer, and an intermediate layer containing a nonmagnetic material, allowing a current to be passed between the first ferromagnetic layer and the second ferromagnetic layer via the intermediate layer, having one end connected to each of the first interconnections, and having another end connected to each of the second interconnections; and a control unit connected to the first interconnections and the second interconnections, an electric resistance between the first ferromagnetic layer of each of the sensor units and the second ferromagnetic layer of each of the sensor units being configured to change between a high resistance value and a low resistance value lower than the high resistance value in accordance with a stress applied to the sensor units, the control unit being configured to sense a change in the electric resistance in the sensor units; a first transistor provided in each of the intersection portions; a pixel electrode provided in each of the intersection portions and directly or indirectly connected to one end of each of the first transistors; an optical layer configured to emit light or change an optical property of the optical layer including at least one of birefringence, optical rotation, scattering, diffraction, and absorption based on a charge supplied to the pixel electrode via the first transistor, a first substrate; a second substrate opposed to the first substrate; and a plurality of protrusions provided on at least one of a surface of the first substrate opposed to the second substrate and a surface of the second substrate opposed to the first substrate, the touch panel, the first transistors, and the pixel electrodes being provided on the surface of the first substrate opposed to the second substrate, the optical layer being disposed between the first substrate and the second substrate, each of the protrusions including a portion overlapping with the sensor unit when viewed from a direction perpendicular to a plane including the first direction and the second direction, the protrusions being configured to transfer a stress applied to the first substrate and the second substrate to the sensor units. - View Dependent Claims (14)
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Specification