Touch Panel
First Claim
1. A touch panel comprising:
- a microstructure over a first substrate, the microstructure comprising a lower electrode, an upper electrode over the lower electrode and a filler layer between the lower electrode and the upper electrode;
a thin film transistor over the first substrate, the thin film transistor comprising a gate electrode and a semiconductor layer;
a conductive layer over the first substrate, the conductive layer being in contact with the semiconductor layer;
a light-emitting element over the first substrate, the light-emitting element comprising a first electrode electrically connected to the conductive layer, a light-emitting layer over the first electrode and a second electrode over the light-emitting layer; and
a spacer over the upper electrode, the spacer overlapping with the filler layer,wherein the lower electrode is formed using the same material as the gate electrode, andwherein the upper electrode is formed using the same material as the first electrode.
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Accused Products
Abstract
A touch sensor (touch panel) which can be formed over the same substrate as a display portion is provided. Alternatively, a touch sensor (touch panel) which does not cause degradation in the quality of an image displayed on a display portion is provided. The touch panel includes a light-emitting element and a microstructure in which a pair of electrodes facing each other is isolated with an insulating material. As the insulating material, an elastic material or a material having a hole is used so that a filler layer formed using the insulating material can be deformed when a movable portion operates. It is preferable to use a material which is softened or hardened by certain treatment (e.g., heat treatment or chemical treatment) after formation.
105 Citations
25 Claims
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1. A touch panel comprising:
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a microstructure over a first substrate, the microstructure comprising a lower electrode, an upper electrode over the lower electrode and a filler layer between the lower electrode and the upper electrode; a thin film transistor over the first substrate, the thin film transistor comprising a gate electrode and a semiconductor layer; a conductive layer over the first substrate, the conductive layer being in contact with the semiconductor layer; a light-emitting element over the first substrate, the light-emitting element comprising a first electrode electrically connected to the conductive layer, a light-emitting layer over the first electrode and a second electrode over the light-emitting layer; and a spacer over the upper electrode, the spacer overlapping with the filler layer, wherein the lower electrode is formed using the same material as the gate electrode, and wherein the upper electrode is formed using the same material as the first electrode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A touch panel comprising:
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a microstructure over a first substrate, the microstructure comprising a lower electrode, an upper electrode over the lower electrode and a filler layer between the lower electrode and the upper electrode; a thin film transistor over the first substrate, the thin film transistor comprising a gate electrode and a semiconductor layer; a conductive layer over the first substrate, the conductive layer being in contact with the semiconductor layer; a light-emitting element over the first substrate, the light-emitting element comprising a first electrode electrically connected to the conductive layer, a light-emitting layer over the first electrode and a second electrode over the light-emitting layer; and a spacer over the upper electrode, the spacer overlapping with the filler layer, wherein the lower electrode is formed using the same material as the conductive layer, and wherein the upper electrode is formed using the same material as the first electrode. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A method for manufacturing a touch panel, the method comprising the steps of:
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forming a gate electrode over a substrate; forming an insulating film over the gate electrode; forming a semiconductor layer over the insulating film; forming a first conductive layer and a lower electrode over the insulating film, wherein a part of the first conductive layer overlaps the semiconductor layer; forming an insulating layer over the first conductive layer and the lower electrode; forming an hole in the insulating layer, wherein the hole overlaps the lower electrode; forming a filler layer in the hole; forming a first electrode and an upper electrode, wherein the first electrode is electrically connected to the semiconductor layer and a part of the upper electrode overlaps the filler layer; forming a partition wall for covering an end portion of the first electrode over the insulating layer, wherein the partition wall for covering the end portion of the first electrode has an opening overlapping with the filler layer; forming a spacer in the opening, wherein the spacer overlaps the filler layer; forming a light-emitting layer over the first electrode; and forming a second electrode over the light-emitting layer.
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Specification