Electrode sheet for pressure detection and pressure detecting module including the same
First Claim
1. An electrode sheet which is disposed on a touch input device comprising a display module and a substrate located under the display module and is used to detect a pressure applied to a touch surface of the touch input device, the electrode sheet comprising:
- a first insulation layer;
a second insulation layer; and
an electrode layer disposed between the first insulation layer and the second insulation layer,wherein the first insulation layer comprises a support layer,wherein, when a pressure is applied to the touch surface, the display module is bent,wherein an electrical characteristic detected from the electrode layer is changed according to the bending of the display module,wherein a magnitude of the pressure applied to the touch surface is detected based cm the change amount of the electrical characteristics,wherein the electrode sheet is attached to one of the substrate and the display module,wherein a spacer layer is disposed between the display module and the substrate,wherein a supporting structure for providing support between the display module and the substrate is only located on at least one of borders of the substrate,wherein the spacer layer does not contribute to the providing support between the display module and the substrate.
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Abstract
An electrode sheet including an electrode layer and a support layer may be provided. The electrode layer includes a first electrode and a second electrode. The electrode sheet is used to detect a capacitance change between the first electrode and the second electrode, which is changed according to a relative distance change between the electrode layer and a reference potential layer disposed apart from the electrode sheet. The support layer is made of a material which is bent when a pressure is applied thereto and which is restored to its original state when the pressure is released therefrom.
19 Citations
21 Claims
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1. An electrode sheet which is disposed on a touch input device comprising a display module and a substrate located under the display module and is used to detect a pressure applied to a touch surface of the touch input device, the electrode sheet comprising:
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a first insulation layer; a second insulation layer; and an electrode layer disposed between the first insulation layer and the second insulation layer, wherein the first insulation layer comprises a support layer, wherein, when a pressure is applied to the touch surface, the display module is bent, wherein an electrical characteristic detected from the electrode layer is changed according to the bending of the display module, wherein a magnitude of the pressure applied to the touch surface is detected based cm the change amount of the electrical characteristics, wherein the electrode sheet is attached to one of the substrate and the display module, wherein a spacer layer is disposed between the display module and the substrate, wherein a supporting structure for providing support between the display module and the substrate is only located on at least one of borders of the substrate, wherein the spacer layer does not contribute to the providing support between the display module and the substrate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 19, 20, 21)
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9. An electrode sheet which is disposed on a touch input device comprising a display module and a substrate located under the display module and is used to detect a pressure applied to a touch surface of the touch input device, the electrode sheet comprising:
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a first electrode; a second electrode; and a first insulation layer disposed between the first electrode and the second electrode, wherein the first insulation layer comprises a support layer, wherein, when a pressure is applied to the touch surface, the display module is bent, wherein an electrical characteristic detected from one of the first electrode and the second electrode is changed according to the bending of the display module, wherein the first electrode and the second electrode are formed not to be overlapped with each other, wherein a magnitude of the pressure applied to the touch surface is detected based on the change amount of the electrical characteristics, wherein the electrode sheet is attached to the display module, wherein a spacer layer is disposed between the display module and the substrate, wherein a supporting structure for providing support between the display module and the substrate is only located on at least one of borders of the substrate, wherein the spacer layer does not contribute to providing support between the display module and the substrate. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification