Particulate matter detection element and method of manufacturing same
First Claim
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1. A particulate matter detection element for detecting particulate matter contained in a measured gas comprising:
- an electrode layer laminated body which is made up of a plurality of first electrode layers, a plurality of second electrode layers, and a plurality of intermediate insulating layers, the first electrode layers and the second electrode layers being stacked to overlap each other in a lamination direction with each of the intermediate insulating layers being disposed between one of the first electrode layers and an adjacent one of the second electrode layers, thereby forming a detection surface and a mounting surface of the electrode layer laminated body, the detection surface and the mounting surface being opposed to each other through a thickness of the electrode layer laminated body in a direction perpendicular to the lamination direction and towards an electrode drawing layer,the electrode drawing layer including a first electrical conductor and a second electrical conductor configured to transmit a signal via an electrical connection, the signal representing one of a resistance, a capacitance and a impedance between each of the first electrode layers and an adjacent one of the second electrode layers as an electrical characteristic varying depending on an amount of particulate matter present between the pair of the detection electrodes;
whereinthe first and second electrode layers and the intermediate insulating layers each have a plate-like shape and a thickness in a range between 3 μ
m and 20 μ
m,the detection surface of the electrode layer laminated body is exposed to outside,the mounting surface is in physical contact with an insulating substrate, andthe first electrode layers are electrically connected to the first electrical conductors through respective electrical joints, and the second electrode layers are electrically connected to the second electrical conductor through respective electrical joints.
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Abstract
The particulate matter detection element is constituted of a laminated body including first and second electrode layers each having a plate-like shape and a thickness between 50 μm and 500 μm laminated on each other through an intermediate insulating layer having a plate-like shape and a thickness between 3 μm and 20 μm. A cross-sectional surface of the laminated body in the lamination direction is used as a detection surface of the particulate matter detection element.
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10 Claims
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1. A particulate matter detection element for detecting particulate matter contained in a measured gas comprising:
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an electrode layer laminated body which is made up of a plurality of first electrode layers, a plurality of second electrode layers, and a plurality of intermediate insulating layers, the first electrode layers and the second electrode layers being stacked to overlap each other in a lamination direction with each of the intermediate insulating layers being disposed between one of the first electrode layers and an adjacent one of the second electrode layers, thereby forming a detection surface and a mounting surface of the electrode layer laminated body, the detection surface and the mounting surface being opposed to each other through a thickness of the electrode layer laminated body in a direction perpendicular to the lamination direction and towards an electrode drawing layer, the electrode drawing layer including a first electrical conductor and a second electrical conductor configured to transmit a signal via an electrical connection, the signal representing one of a resistance, a capacitance and a impedance between each of the first electrode layers and an adjacent one of the second electrode layers as an electrical characteristic varying depending on an amount of particulate matter present between the pair of the detection electrodes; wherein the first and second electrode layers and the intermediate insulating layers each have a plate-like shape and a thickness in a range between 3 μ
m and 20 μ
m,the detection surface of the electrode layer laminated body is exposed to outside, the mounting surface is in physical contact with an insulating substrate, and the first electrode layers are electrically connected to the first electrical conductors through respective electrical joints, and the second electrode layers are electrically connected to the second electrical conductor through respective electrical joints. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification