Touch sensor, touch panel, and manufacturing method of touch panel
First Claim
1. A touch sensor comprising:
- a circuit comprising;
a transistor, a channel formation region of the transistor comprising an oxide semiconductor layer; and
a capacitor comprising a pair of electrodes, one of the pair of electrodes comprising an oxide conductor layer,wherein one of a source and a drain of the transistor is electrically connected to one of the pair of electrodes of the capacitor,wherein the circuit is configured to output a signal based on a change in a capacitance of the capacitor,wherein the oxide semiconductor layer is provided separately from the oxide conductor layer,wherein an insulating film is provided over the oxide semiconductor layer and the oxide conductor layer, andwherein the insulating film is not in contact with the oxide semiconductor layer and is in contact with the oxide conductor layer.
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Accused Products
Abstract
To provide a touch sensor including a transistor and a capacitor in which the transistor and the capacitor are electrically connected to each other, the capacitor includes a pair of electrodes and a dielectric layer, the dielectric layer is located between the pair of electrodes, and one of the pair of electrodes includes an oxide conductor layer. To provide a touch panel including the touch sensor, a light-blocking layer, and a display element in which the touch sensor is located more on the display surface side of the touch panel than on the display element side, the light-blocking layer is located more on the display surface side than on the touch sensor side, the display element includes a portion overlapping with the capacitor, and the light-blocking layer includes a portion overlapping with the transistor.
144 Citations
34 Claims
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1. A touch sensor comprising:
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a circuit comprising; a transistor, a channel formation region of the transistor comprising an oxide semiconductor layer; and a capacitor comprising a pair of electrodes, one of the pair of electrodes comprising an oxide conductor layer, wherein one of a source and a drain of the transistor is electrically connected to one of the pair of electrodes of the capacitor, wherein the circuit is configured to output a signal based on a change in a capacitance of the capacitor, wherein the oxide semiconductor layer is provided separately from the oxide conductor layer, wherein an insulating film is provided over the oxide semiconductor layer and the oxide conductor layer, and wherein the insulating film is not in contact with the oxide semiconductor layer and is in contact with the oxide conductor layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A touch sensor comprising:
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a circuit comprising; a first transistor, a second transistor, and a third transistor, a channel formation region of at least one of the first transistor, the second transistor, and the third transistor comprising an oxide semiconductor layer; and a capacitor comprising a pair of electrodes, one of the pair of electrodes comprising an oxide conductor layer, wherein one of a source and a drain of the first transistor is electrically connected to a gate of the second transistor and one of the pair of electrodes of the capacitor, wherein one of a source and a drain of the second transistor is electrically connected to one of a source and a drain of the third transistor, wherein the circuit is configured to output a signal based on a change in a capacitance of the capacitor, and wherein the oxide semiconductor layer is provided separately from the oxide conductor layer. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. A touch panel comprising:
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a touch sensor comprising a circuit, the circuit comprising; a transistor, a channel formation region of the transistor comprising an oxide semiconductor layer; and a capacitor comprising a pair of electrodes, one of the pair of electrodes comprising an oxide conductor layer; and a display element, wherein one of a source and a drain of the transistor is electrically connected to one of the pair of electrodes of the capacitor, wherein the circuit is configured to output a signal based on a change in a capacitance of the capacitor, wherein the oxide semiconductor layer is provided separately from the oxide conductor layer, and wherein the capacitor and the display element overlap with each other. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25)
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26. A sensor comprising:
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a circuit comprising; a transistor, a channel formation region of the transistor comprising a first layer which comprises an oxide semiconductor; and a capacitor comprising a pair of electrodes, one of the pair of electrodes comprising a second layer which comprises an oxide conductor, wherein one of a source and a drain of the transistor is electrically connected to one of the pair of electrodes of the capacitor, wherein the circuit is configured to output a signal based on a change in a capacitance of the capacitor, wherein an insulating film is provided over the first layer and the second layer, and wherein the insulating film is not in contact with the first layer and is in contact with the second layer. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34)
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Specification