Thin film pressure sensor type electronic skin

Abstract

The utility model relates to the technical field of electronic skin, in particular to film pressure sensor type electronic skin, which solves the problems of low sensitivity, multi-directional pressure measurement and difficulty in realizing mass production. An electronic skin inner layer is arranged in an insulation isolation layer between a first electrode layer and a second electrode layer, the first electrode layer and the second electrode layer are respectively provided with a plurality of positive electrode contacts and a plurality of negative electrode contacts which are arranged in parallel, the insulation isolation layer is provided with a plurality of through holes, and each through hole is used for exposing one positive electrode contact and one negative electrode contact. When the surface of the outer layer of the electronic skin is squeezed and touched, the second electrode layer is electrically connected with an external control box unit through the electric connector interface, the sensitivity of the electronic skin can be improved, and the two flexible buffer layers are both adhered to the two sides of the sensing unit, so that the sensitivity of the electronic skin is improved. The sensing unit can be conveniently pasted on the surface of the outer layer of the electronic skin, pressure borne by the skin can be read and monitored, and the use diversity of the electronic skin is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic skin, in particular to an electronic skin with a thin-film pressure sensor. Background Art

[0002] Using electronic devices to simulate human skin has become an emerging research field, which has attracted great interest from researchers and has broad application prospects in the fields of artificial intelligence and human-computer interaction. However, traditional rigid electronic devices are hard and brittle, difficult to withstand large deformations, and not suitable for integration on soft non-planar surfaces. Therefore, new electronic products that break through traditional rigid electronic devices, namely flexible electronic devices, have become the focus of researchers. Although many achievements have been made in the research of electronic skin, there are also many problems, such as insufficient device sensitivity, multi-directional pressure measurement, narrow linear range, complex manufacturing process, and difficulty in mass production. Content of the Utility Model

[0003] (1) Technical problems to be solved

[0004] To solve the problems of insufficient sensitivity, multi-directional pressure measurement, and difficulty in mass production.

[0005] (2) Technical solutions

[0006] The technical solution of the utility model is: an electronic skin with a thin-film pressure sensor, including an outer layer of the electronic skin and an inner layer of the electronic skin attached to the outer layer of the electronic skin; characterized in that: the outer layer of the electronic skin is a protective layer, the inner layer of the electronic skin is a circuit layer, the inner layer of the electronic skin has a first electrode layer, a second electrode layer, and an insulating isolation layer clamped between the first electrode layer and the second electrode layer. The first electrode layer and the second electrode layer are respectively provided with a plurality of positive electrode contacts and a plurality of negative electrode contacts arranged in parallel. The insulating isolation layer has a plurality of through holes, and each through hole is used to expose a positive electrode contact and a negative electrode contact. The positive electrode contact is used to conduct the negative electrode contact; the outer layer of the electronic skin is made of a soft material, the outer layer of the electronic skin is attached to the first electrode layer, and the second electrode layer is electrically connected to an external control box unit through a wire assembly or an electrical connector interface.

[0007] Preferably, by arranging the inner layer of the electronic skin between two outer layers of the electronic skin, with the inner layer of the electronic skin being the circuit layer and arranging it within the insulating isolation layer between the first electrode layer and the second electrode layer, the first electrode layer and the second electrode layer are respectively configured with multiple positive electrode contacts and multiple negative electrode contacts arranged in parallel. The insulating isolation layer has multiple perforations, and each perforation is used to expose one positive electrode contact and one negative electrode contact. The positive electrode contact is used to conduct the negative electrode contact. When the surface of the outer layer of the electronic skin is squeezed or touched, the second electrode layer is electrically connected to the external control box unit via the electrical connector interface, which can improve the sensitivity of the electronic skin. And both flexible buffer layers are pasted on both sides of the sensing unit. A paste layer is provided on the side of the flexible substrate layer away from the sensing unit, and the release layer is pasted on the surface of the outer layer of the electronic skin, which is convenient for pasting the sensing unit onto the surface of the outer layer of the electronic skin. The pressure received by the skin can be read and monitored, improving the diversity of the use of the electronic skin.

[0008] Furthermore, the outer layer of the electronic skin is made of sponge or silica gel, which can greatly approximate the tactile sensation of the skin tissue and has a good buffering effect.

[0009] Furthermore, the thickness of the outer layer of the electronic skin is 0.1 - 1.0 cm, which can improve the sensitivity of the electronic skin when contacting external objects.

[0010] Furthermore, the second electrode layer is attached, buckled or magnetically adsorbed to an external component. The insulating isolation layer has multiple first strips arranged in parallel and multiple second strips arranged in parallel. The first strips and the second strips are arranged crosswise, and adjacent two first strips and adjacent two second strips enclose to form perforations, further enhancing the firmness of the electronic skin.

[0011] Furthermore, the outer layer of the electronic skin further includes flexible buffer layers covering the sensing unit. The flexible buffer layers are made of sponge or silica gel, and both flexible buffer layers are pasted on both sides of the sensing unit. By arranging the sensing unit on the flexible buffer layer, the pressure sensing sensitivity of the electronic skin can be further improved.

[0012] Furthermore, the outer layer of the electronic skin further includes a release layer. A paste layer is provided on the side of the flexible substrate layer away from the sensing unit, and the release layer is pasted on the surface of the outer layer of the electronic skin, which is convenient for pasting the sensing unit onto the surface of the outer layer of the electronic skin.

[0013] (3) Beneficial effects

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows: By arranging the inner layer of the electronic skin between two outer layers of the electronic skin, the inner layer of the electronic skin is a circuit layer, and the inner layer of the electronic skin is arranged in an insulating isolation layer between the first electrode layer and the second electrode layer. The first electrode layer and the second electrode layer are respectively configured with a plurality of positive electrode contacts and a plurality of negative electrode contacts arranged in parallel. The insulating isolation layer has a plurality of through holes, and each through hole is used to expose a positive electrode contact and a negative electrode contact. The positive electrode contact is used to conduct the negative electrode contact. When the surface of the outer layer of the electronic skin is squeezed or touched, the second electrode layer is electrically connected to an external control box unit via an electrical connector interface, which can improve the sensitivity of the electronic skin. And both flexible buffer layers are pasted on both sides of the sensing unit. A paste layer is provided on one side of the flexible substrate layer away from the sensing unit, and a release layer is attached to the surface of the outer layer of the electronic skin, which is convenient for pasting the sensing unit on the surface of the outer layer of the electronic skin. The pressure received by the skin can be read and monitored, improving the diversity of the use of the electronic skin. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 FIG. shows a schematic structural diagram of the sensing unit of the present utility model;

[0016] Figure 2 FIG. shows an exploded view of the electronic skin of the present utility model;

[0017] Figure 3 FIG. shows a partial cross-sectional view of the electronic skin of the present utility model;

[0018] Figure 4 FIG. shows an installation diagram of the flexible buffer layer and the sensing unit of the present utility model;

[0019] Figure 5 FIG. shows a distribution diagram of the sensing units of the present utility model;

[0020] Figure 6 FIG. shows in the present utility model Figure 5 An enlarged view of part A.

[0021] Explanation of reference numerals: 1 - outer layer of the electronic skin, 2 - inner layer of the electronic skin, 3 - circuit layer, 4 - flexible buffer layer, 5 - sensing unit. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The present utility model will be further described below with reference to the drawings and embodiments.

[0023] Embodiment 1:

[0024] 7. Please refer to Figures 1-6, the present utility model provides an embodiment: a thin-film pressure sensor type electronic skin, comprising an outer layer of the electronic skin and an inner layer of the electronic skin attached to the outer layer of the electronic skin; characterized in that: the outer layer of the electronic skin is a protective layer, and the inner layer of the electronic skin is a circuit layer. The inner layer of the electronic skin has a first electrode layer, a second electrode layer, and an insulating isolation layer clamped between the first electrode layer and the second electrode layer. The first electrode layer and the second electrode layer are respectively provided with a plurality of positive electrode contacts and a plurality of negative electrode contacts arranged in parallel. The insulating isolation layer has a plurality of through holes, and each through hole is used to expose a positive electrode contact and a negative electrode contact. The positive electrode contact is used to conduct the negative electrode contact. The outer layer of the electronic skin is made of a soft material and is attached to the first electrode layer. The second electrode layer is electrically connected to an external control box unit via a wire assembly or an electrical connector interface. The outer layer of the electronic skin is made of sponge or silica gel, which can closely approximate the tactile sensation of skin tissue to a great extent and has a good buffering effect. The thickness of the outer layer of the electronic skin is 0.1 - 1.0 cm, which can improve the sensitivity of the electronic skin when contacting an external object. The second electrode layer is attached, buckled, or magnetically adsorbed to an external component. The insulating isolation layer has a plurality of first strips arranged in parallel and a plurality of second strips arranged in parallel. The first strips and the second strips are arranged crosswise, and adjacent two first strips and adjacent two second strips enclose to form through holes, further enhancing the firmness of the electronic skin. By arranging the inner layer of the electronic skin between two outer layers of the electronic skin, and the inner layer of the electronic skin being a circuit layer, arranging the inner layer of the electronic skin in the insulating isolation layer between the first electrode layer and the second electrode layer, the first electrode layer and the second electrode layer are respectively provided with a plurality of positive electrode contacts and a plurality of negative electrode contacts arranged in parallel. The insulating isolation layer has a plurality of through holes, and each through hole is used to expose a positive electrode contact and a negative electrode contact. The positive electrode contact is used to conduct the negative electrode contact. When the surface of the outer layer of the electronic skin is squeezed or touched, the second electrode layer is electrically connected to an external control box unit via an electrical connector interface, which can improve the sensitivity of the electronic skin, and both flexible buffer layers are attached to both sides of the sensing unit. A paste layer is provided on the side of the flexible substrate layer away from the sensing unit, and the release layer is attached to the surface of the outer layer of the electronic skin, facilitating the attachment of the sensing unit to the surface of the outer layer of the electronic skin, and the pressure received by the skin can be read and monitored, improving the diversity of the use of the electronic skin;

[0025] Embodiment 2:

[0026] Please refer to Figure 2, in this embodiment, the outer layer of the electronic skin further includes a flexible buffer layer covering the sensing unit. The flexible buffer layer is made of sponge or silica gel. Both flexible buffer layers are pasted on both sides of the sensing unit. By arranging the sensing unit on the flexible buffer layer, the pressure sensing sensitivity of the electronic skin can be further improved. The outer layer of the electronic skin further includes a release layer. A paste layer is provided on the side of the flexible substrate layer away from the sensing unit. The release layer is pasted on the surface of the outer layer of the electronic skin, which facilitates pasting the sensing unit onto the surface of the outer layer of the electronic skin.

[0027] Through the above steps, by arranging the inner layer of the electronic skin between two outer layers of the electronic skin, the inner layer of the electronic skin is a circuit layer, and the inner layer of the electronic skin is arranged in the insulating isolation layer between the first electrode layer and the second electrode layer. The first electrode layer and the second electrode layer are respectively provided with a plurality of positive electrode contacts and a plurality of negative electrode contacts arranged in parallel. The insulating isolation layer has a plurality of through holes, and each through hole is used to expose a positive electrode contact and a negative electrode contact. The positive electrode contact is used to conduct the negative electrode contact. When the surface of the outer layer of the electronic skin is squeezed or touched, the second electrode layer is electrically connected to an external control box unit via an electrical connector interface, which can improve the sensitivity of the electronic skin. And both flexible buffer layers are pasted on both sides of the sensing unit. A paste layer is provided on the side of the flexible substrate layer away from the sensing unit. The release layer is pasted on the surface of the outer layer of the electronic skin, which facilitates pasting the sensing unit onto the surface of the outer layer of the electronic skin and can read and monitor the pressure received by the skin, improving the diversity of the use of the electronic skin.

[0028] The above describes the embodiments of the present invention in detail with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the purpose of the present invention.

Claims

1. A thin-film pressure sensor-based electronic skin, comprising an outer layer of the electronic skin and an inner layer of the electronic skin attached to the outer layer of the electronic skin; characterized in that: The outer layer of the electronic skin is a protective layer, and the inner layer of the electronic skin is a circuit layer. The inner layer of the electronic skin has a first electrode layer, a second electrode layer, and an insulating isolation layer clamped between the first electrode layer and the second electrode layer. The first electrode layer and the second electrode layer are respectively provided with a plurality of positive electrode contacts and a plurality of negative electrode contacts arranged in parallel. The insulating isolation layer has a plurality of through holes, and each through hole is used to expose a positive electrode contact and a negative electrode contact. The positive electrode contact is used to conduct the negative electrode contact. The outer layer of the electronic skin is made of a soft material, and the outer layer of the electronic skin is attached to the first electrode layer. The second electrode layer is electrically connected to an external control box unit via a wire assembly or an electrical connector interface. The second electrode layer is attached, buckled, or magnetically adsorbed to an external component. The insulating isolation layer has a plurality of first strips arranged in parallel and a plurality of second strips arranged in parallel. The first strips and the second strips are arranged crosswise, and adjacent two first strips and adjacent two second strips enclose to form through holes. The outer layer of the electronic skin further includes a flexible buffer layer covering the sensing unit. The flexible buffer layer is made of sponge or silica gel, and both flexible buffer layers are attached to both sides of the sensing unit. The outer layer of the electronic skin further includes a release layer. A paste layer is provided on the side of the flexible substrate layer away from the sensing unit, and the release layer is attached to the surface of the outer layer of the electronic skin.

2. The thin-film pressure sensor-based electronic skin according to claim 1, wherein: The outer layer of the electronic skin is made of sponge or silica gel.

3. The thin-film pressure sensor type electronic skin according to claim 1, characterized in that: The thickness of the outer layer of the electronic skin is 0.1 - 1.0 cm.

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