Friction power generation device and display device

Abstract

The utility model discloses a friction power generation device and a display device. The friction power generation device includes: a substrate; the elastic friction body is arranged on the surface of the base plate, elastically deforms under the action of external force and recovers to the original state after the external force is removed; the friction electrode is arranged around the elastic friction body, the elastic friction body is provided with a first end and a second end, the first end of the elastic friction body is insulated from the friction electrode, and the second end of the elastic friction body is in contact with the friction electrode when elastic deformation occurs; and the collecting electrode is used for collecting charges generated by the elastic friction body in the deformation process and guiding out the charges. By arranging the elastic friction body and the friction electrode, in the process of external force, the elastic friction body can generate elastic deformation and rub with the friction electrode, so that the elastic friction body carries one type of charge, and the friction electrode carries another type of charge. And the two charges can be transmitted to an external energy collection and conversion device, so that the recycling of the friction energy is realized.

Description

Technical Field

[0001] The present application relates to the technical field of electronic products, and in particular to a friction power generation device and a display device. Background Art

[0002] With the rapid development of electronic technology, people have put forward higher and higher requirements for the battery life of various portable electronic products and the emergency power supply plan in the event of an emergency or emergency! At present, the only solution to this problem is to configure an additional power generation battery for various electronic devices. Usually, the power generation batteries that can be used with electronic products include photovoltaic power generation batteries, thermoelectric power generation batteries and friction power generation batteries. For portable electronic products, the principle of photovoltaic power generation is to absorb ambient light energy to generate electricity, and the principle of thermoelectric power generation is to absorb ambient heat energy or excess heat generated by the working process of the device itself to generate electricity, while the mechanical energy of friction power generation comes from the mechanical energy generated by the user operation process that has never been used by the system-friction. Nowadays, various portable electronic products used by people, such as watches, mobile phones, tablets or notebooks, or various guides or readers with display functions set up in public places for consumers to inquire, are almost all equipped with touch functions. The touch operations of mobile phones and tablets that are used most frequently in daily life are as high as hundreds of times a day, or even tens of thousands of times a day. While so many manual touch operations bring people pleasant entertainment, they also consume huge energy for human society. How to utilize this energy is a new problem. Summary of the invention

[0003] In order to overcome the above-mentioned shortcomings and deficiencies of the prior art, the present application provides a friction power generation device and a display device, which can utilize the touch function of the user in the process of operating electronic products to collect friction energy, thereby achieving the purpose of energy saving.

[0004] The purpose of this application is achieved through the following technical solutions:

[0005] One embodiment of the present application provides a friction power generation device, comprising:

[0006] substrate;

[0007] An elastic friction body is arranged on the surface of the substrate, and the elastic friction body is elastically deformed under the action of an external force and returns to an original state after the external force is removed;

[0008] a friction electrode, arranged around the elastic friction body, the elastic friction body having a first end and a second end, the first end of the elastic friction body being insulated from the friction electrode, and the second end of the elastic friction body being in contact with the friction electrode when elastic deformation occurs;

[0009] A collecting electrode, configured to collect the charges generated by the mutual friction between the elastic friction body and the friction electrode during the deformation process of the elastic friction body and conduct them out.

[0010] In one embodiment, the collecting electrode is disposed around the friction electrode, the collecting electrode is insulated from the friction electrode, and the collecting electrode has no electrical connection with the elastic friction body before its deformation.

[0011] In one embodiment, the elastic friction body has a columnar or sheet-like structure, and a plurality of elastic friction bodies having a columnar or sheet-like structure are arranged in a regular shape in an array pattern, or are arranged in a random shape with a non-array pattern locally while having a regular shape in an overall regular array form.

[0012] In one embodiment, the collecting electrodes of the plurality of elastic friction bodies are connected to each other, so that the plurality of elastic friction bodies share the same collecting electrode.

[0013] In one embodiment, the elastic friction body, the friction electrode, and the collecting electrode are all located on the same surface of the substrate;

[0014] Alternatively, the triboelectric power generation device includes a second substrate, the elastic friction body is disposed on the surface of the substrate, and the friction electrode and the collecting electrode are disposed on the surface of the second substrate.

[0015] In one embodiment, when the friction electrode and the collecting electrode are disposed on the surface of the second substrate, the charges generated by the elastic friction body during the friction process are transmitted to the collecting electrode through contact discharge or non-contact discharge.

[0016] In one embodiment, the height of the elastic friction body is less than or equal to the distance between the substrate and the second substrate.

[0017] In one embodiment, the friction electrode and the collecting electrode are two physically separated structures in the horizontal direction or in the vertical direction, and the distance between the two is greater than 2 microns.

[0018] In one embodiment, one side of the collecting electrode close to the friction electrode is set to a first shape with a local protrusion;

[0019] And / or, one side of the friction electrode close to the collecting electrode is set to a second shape with a local protrusion;

[0020] The first shape and the second shape are disposed opposite to each other or are coupled to each other.

[0021] In one embodiment, the first shape and the second shape are in a triangular form or a semi-circular form.

[0022] In one embodiment, when the first shape and the second shape are in a triangular form, the angle of the protruding parts of the first shape and the second shape is greater than or equal to 90 degrees.

[0023] In one embodiment, the corners of the protruding parts of the first shape and the second shape are chamfered, and the radius of the chamfer is greater than or equal to 1.0 mm.

[0024] In one embodiment, the materials for manufacturing the friction electrode and the collecting electrode include: metallic materials, TCO materials, or semiconductor materials with a conductivity greater than 1000 s / m.

[0025] In one embodiment, the materials for manufacturing the elastic friction body include:

[0026] High-molecular materials with strong electronegativity, including but not limited to: modified acrylic resin, modified PVDF resin, modified polyimide resin, modified silicone resin, modified phenolic resin, propylene glycol methyl ether acetate and its derivatives, modified TEFLON resin, EPDM rubber;

[0027] Or, fullerenes and their derivatives;

[0028] Or, high-molecular compounds containing -NO2, -CN, -F, -Cl, -Br, -CH3, -OCH3, or -OH components;

[0029] Or, materials containing strong electron-donating groups, including but not limited to P3HT, PEDOT:PSS, MoO3.

[0030] In one embodiment, the elastic friction body is composed of a columnar or sheet-like structure with a high-conductivity material wrapped on the surface, and the high-conductivity material includes PEDOT:PSS or PBFDO.

[0031] In one embodiment, when the elastic friction body is in a columnar structure, the maximum width of the cross-section of the middle region of the columnar structure is less than 1 / 2 of the radius corresponding to the arc formed when the columnar structure is bent under force.

[0032] In one embodiment, when the elastic friction body is in a sheet-like structure, the largest surface or structural surface in the sheet-like structure faces the side where the force on the triboelectric power generation device is relatively concentrated.

[0033] In one embodiment, the angle between the columnar or sheet-like structured elastic friction body and the substrate plane is less than or equal to 90 degrees.

[0034] In one embodiment, the angle between the elastic friction body of the columnar or sheet-like structure and the substrate plane is between 50 degrees and 80 degrees.

[0035] In one embodiment, the cross-sectional width of the second end of the elastic friction body is greater than the cross-sectional width of the first end of the elastic friction body.

[0036] One embodiment of the present invention provides a display device, including the triboelectric power generation device as described in any one of the above embodiments.

[0037] In one embodiment, the display device includes:

[0038] The upper substrate of the display;

[0039] A touch control device disposed on the upper substrate of the display; and

[0040] A protective cover plate disposed on the touch control device;

[0041] Wherein, the triboelectric power generation device is disposed inside the touch control device.

[0042] In one embodiment, the display device includes:

[0043] The upper substrate of the display;

[0044] A protective cover plate disposed on one side of the upper substrate of the display;

[0045] The lower substrate of the display, disposed on the other side of the upper substrate of the display;

[0046] Wherein, a first adhesive material is disposed between the upper substrate of the display and the protective cover plate, a second adhesive material is disposed between the upper substrate of the display and the lower substrate of the display, and the triboelectric power generation device is located in the space formed by the first adhesive material and the adjacent substrate, or the triboelectric power generation device is located in the space formed by the second adhesive material and the adjacent substrate.

[0047] In one embodiment, the display device includes:

[0048] The upper substrate of the display;

[0049] A touch control device disposed on one side of the upper substrate of the display;

[0050] A protective cover plate disposed on the surface of the touch control device;

[0051] The lower substrate of the display, disposed on the other side of the upper substrate of the display;

[0052] Among them, a first adhesive material is arranged between the upper substrate of the display and the touch device, a second adhesive material is arranged between the upper substrate of the display and the lower substrate of the display, and a third adhesive material is arranged between the touch device and the protective cover plate. The friction power generation device is located in the space formed by the first adhesive material and the adjacent substrate, or the friction power generation device is located in the space formed by the second adhesive material and the adjacent substrate, or the friction power generation device is located in the space formed by the third adhesive material and the adjacent substrate.

[0053] In one embodiment, in the friction power generation device, the elastic friction bodies are located in a non-display area between sub-pixels of the display device and are distributed in an array.

[0054] In one embodiment, the display device further includes:

[0055] A solar cell, wherein the solar cell is built-in or externally mounted in the display device;

[0056] When the display device has the solar cell built therein, the solar cell may be arranged on the surface of the display upper substrate or the display lower substrate;

[0057] When the solar cell is externally mounted on the display device, the solar cell may be attached to the upper surface of the display device or to the surface of the touch device;

[0058] Wherein, the friction power generation device is arranged in the solar cell, or is arranged between the solar cell and the display device or the touch device or the protective cover.

[0059] Compared with the prior art, the friction power generation device provided by the present application has the following advantages and beneficial effects:

[0060] The friction power generation device can collect and recycle the friction energy generated by the user when the user touches the product, thereby reducing the power loss of the electronic product. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] Figure 1 A schematic diagram of the structure of a friction power generation device provided in one of the embodiments of the present application;

[0062] Figure 2 for Figure 1 A schematic top view of the friction power generation device in FIG.

[0063] Figure 3 for Figure 1 A schematic diagram of one embodiment of the friction electrode and the collecting electrode;

[0064] Figure 4 Another schematic diagram of the friction electrode and the collection electrode in Figure 1 ;

[0065] Figure 5 Another Figure 1 schematic diagram of the friction electrode and the collection electrode in

[0066] Figure 6 Another Figure 1 schematic diagram of the friction electrode and the collection electrode in

[0067] Figure 7 Schematic diagram of the structure of the triboelectric power generation device provided by another embodiment of the present application;

[0068] Figure 8 Schematic diagram of the structure of the triboelectric power generation device provided by another embodiment of the present application;

[0069] Figure 9 Schematic diagram of the structure of the triboelectric power generation device provided by another embodiment of the present application;

[0070] Figure 10 Schematic diagram of the structure of the triboelectric power generation device provided by another embodiment of the present application;

[0071] Figure 11 Schematic diagram of the structure of the triboelectric power generation device provided by another embodiment of the present application;

[0072] Figure 12 Schematic diagram of the structure of the display device provided by one of the embodiments of the present application;

[0073] Figure 13 Another Figure 12 schematic diagram of the setting manner of the triboelectric power generation device in

[0074] Figure 14 Another Figure 12 schematic diagram of the setting manner of the triboelectric power generation device in another embodiment of

[0075] Figure 15 Schematic diagram of the structure of the display device provided by another embodiment of the present application;

[0076] Figure 16 Schematic diagram of the structure of the display device provided by another embodiment of the present application. Specific embodiments

[0077] The present application will be further described in detail below in conjunction with embodiments, but the embodiments of the present application are not limited thereto.

[0078] One embodiment of the present application provides a triboelectric power generation device 100. The triboelectric power generation device 100 includes a substrate 110, an elastic friction body 120, a friction electrode 130, and a collection electrode 140.

[0079] The elastic friction body 120 is disposed on the surface of the substrate 110. The elastic friction body 120 undergoes elastic deformation under an external force and returns to its original state after the external force is removed.

[0080] The friction electrode 130 is disposed around the elastic friction body 120. The elastic friction body 120 has a first end 121 and a second end 122. The first end 121 of the elastic friction body 120 is insulated from the friction electrode 130. The second end 122 of the elastic friction body 120 comes into contact with the friction electrode 130 when elastic deformation occurs.

[0081] The collection electrode 140 is used to collect the charges generated during the deformation of the elastic friction body 120 and the friction with the friction electrode and conduct them out.

[0082] In the triboelectric power generation device 100 provided in this embodiment, by providing the elastic friction body 120 and the friction electrode 130, during the action of an external force, the elastic friction body 120 will undergo elastic deformation and rub against the friction electrode 130, so that the elastic friction body 120 carries one kind of charge and the friction electrode 130 carries another kind of charge. These two kinds of charges can be transmitted to an external energy collection and conversion device, thereby realizing the recycling of frictional energy. That is, the triboelectric power generation device 100 can collect and recycle the frictional energy generated by the user during the touch process, thereby reducing the power consumption of electronic products.

[0083] In this embodiment, the materials for making the elastic friction body 120 include:

[0084] High molecular materials with strong electronegativity, including but not limited to: modified acrylic resin, modified PVDF resin, modified polyimide resin, modified silicone resin, modified phenolic resin, propylene glycol methyl ether acetate and its derivatives, modified TEFLON resin, EPDM rubber;

[0085] Or, fullerenes and their derivatives;

[0086] Or, high molecular compounds containing -NO2, -CN, -F, -Cl, -Br, -CH3, -OCH3 or -OH components;

[0087] Or, materials containing strong electron-donating groups, including but not limited to P3HT, PEDOT:PSS, MoO3.

[0088] In this embodiment, the elastic friction body 120 has a columnar structure. Specifically, the plurality of columnar elastic friction bodies are arranged in a regular shape in an array pattern, or are arranged in a random shape with a non-array pattern locally while presenting a regular shape in an overall regular array form. The columnar structure can be in the form of a triangular prism, a quadrangular prism, or a polygonal prism. According to requirements, the columnar structure can also be an irregular polyhedron structure, or a trapezoidal or inverted trapezoidal structure, or a cylindrical structure, etc. As long as the elastic friction body 120 can generate elastic deformation under an external force and friction with the friction electrode 130. The height or length of the columnar structure is less than or equal to the thickness of the cavity for setting the triboelectric power generation device 100. The manufacturing method of the elastic friction body 120 includes, but is not limited to, being manufactured by means of lithography technology, 3D printing technology, or nanoimprinting technology, etc.

[0089] In this embodiment, the collecting electrode 140 is disposed around the friction electrode 130. The collecting electrode 140 is insulated from the friction electrode 130. The collecting electrode 140 is not electrically connected to the elastic friction body 120 before its deformation. According to requirements, the charges generated by the elastic friction body 120 during the friction process are transmitted to the collecting electrode 140 through contact or capacitive discharge.

[0090] Specifically, the friction electrode 130 is locally or entirely disposed around the elastic friction body 120. The width range of the friction electrode 130 is set in the area that can be touched and has relative friction possibility after the elastic friction body 120 is bent by 180°. Further, the friction electrode 130 can also extend to the bottom of the elastic friction body 120 and be in contact with the elastic friction body 120. When the elastic friction body 120 is bent under an external force (multi-vector pressure), since it is elastic deformation, it can quickly return to its original set state after the external force is withdrawn. Around the circumferential friction electrode 130, a circle of collecting electrodes 140 is disposed at intervals and in a surrounding manner. The shape of the collecting electrode 140 on the side close to the friction electrode 130 is set as a smooth line. The friction electrode 130 and the collecting electrode 140 are two physically separated structures in the horizontal or vertical direction, and the distance is greater than 2 microns.

[0091] In one embodiment, the collecting electrodes 140 of the plurality of elastic friction bodies 120 are connected to each other, so that the plurality of elastic friction bodies 120 share the same collecting electrode 140, as Figure 2 shown.

[0092] It can be understood that the shape of the collecting electrode 140 on the side close to the friction electrode 130 is not limited to being set as a smooth line. Please refer toFigure 3 In one embodiment, one side of the collecting electrode 140 close to the friction electrode 130 is arranged in a first shape with a local protrusion. One side of the friction electrode 130 close to the collecting electrode 140 is arranged in a second shape with a local protrusion. The first shape and the second shape may be a triangular type, a semi-circular type, a trapezoidal type or a polygonal type, etc. In this embodiment, the first shape and the second shape are of a triangular type. The first shape with a local protrusion of the collecting electrode 140 is arranged opposite to the second shape with a local protrusion of the friction electrode 130. That is, the tip of the triangle with a local protrusion of the collecting electrode 140 is just arranged opposite to the tip of the triangle with a local protrusion of the friction electrode 130.

[0093] It can be understood that the relative positions of the first shape with a local protrusion of the collecting electrode 140 and the second shape with a local protrusion of the friction electrode 130 are not limited to the above embodiments. Please refer to Figure 4 In this embodiment, the first shape with a local protrusion of the collecting electrode 140 and the second shape with a local protrusion of the friction electrode 130 are arranged in a coupled manner. That is, the tip of the triangle with a local protrusion of the collecting electrode 140 just corresponds to the recessed part of the triangle with a local protrusion of the friction electrode 130; while the tip of the triangle with a local protrusion of the friction electrode 130 just corresponds to the recessed part of the triangle with a local protrusion of the collecting electrode 140.

[0094] In this embodiment, when the first shape and the second shape are of a triangular type, the angles of the protruding parts of the first shape and the second shape are greater than or equal to 90 degrees. As required, the angles of the protruding parts of the first shape and the second shape are chamfered, and the radius of the chamfer is greater than or equal to 1.0 mm. That is, when the protruding parts of the collecting electrode 140 and the friction electrode 130 are designed as triangles, the angles of the protruding parts are preferably obtuse angles of ≥90°, and the tips of the obtuse angles need to be chamfered smoothly, and the radius of the chamfer is ≥1.0 mm, so as to facilitate the rapid transfer of the charges induced by the elastic friction body without damaging the protruding parts of the collecting electrode.

[0095] Please refer to Figure 5, in one embodiment, one side of the collecting electrode 140 close to the friction electrode 130 is arranged in a first shape with a local protrusion. One side of the friction electrode 130 close to the collecting electrode 140 is arranged in a second shape with a local protrusion. The first shape and the second shape are semi-circular types. The first shape with the local protrusion of the collecting electrode 140 is arranged opposite to the second shape with the local protrusion of the friction electrode 130. That is, the protruding end of the semi-circular shape with the local protrusion of the collecting electrode 140 is just arranged opposite to the protruding end of the semi-circular shape with the local protrusion of the friction electrode 130.

[0096] It can be understood that the relative position of the first shape with the local protrusion of the collecting electrode 140 and the second shape with the local protrusion of the friction electrode 130 is not limited to the above embodiment. Please refer to Figure 6 , in this embodiment, the first shape with the local protrusion of the collecting electrode 140 and the second shape with the local protrusion of the friction electrode 130 are arranged in a coupled manner. That is, the protruding end of the semi-circular shape with the local protrusion of the collecting electrode 140 just corresponds to the recessed part of the semi-circular shape with the local protrusion of the friction electrode 130; while the protruding end of the semi-circular shape with the local protrusion of the friction electrode 130 just corresponds to the recessed part of the semi-circular shape with the local protrusion of the collecting electrode 140.

[0097] As required, the manufacturing materials of the friction electrode 130 and the collecting electrode 140 include: metal materials, TCO materials or semiconductor materials with a conductivity greater than 1000 s / m. As required, the elastic friction body is composed of a columnar structure with a high-conductivity material wrapped on the surface, and the high-conductivity material includes PEDOT:PSS or PBFDO.

[0098] In the actual application process, since the set areas of the friction electrode 130 and the collection electrode 140 may partially cover the sub-pixels of the display device, the materials of the friction electrode 130 and the collection electrode 140 can be selected as the same TCO material or a semiconductor material with a conductivity greater than 1000 s / m, or different materials can be selected respectively to improve the optical and electrical properties of the display device. Preferably, the elastic friction body 120 is composed of a multi-prism body with a high-conductivity material such as PEDOT:PSS or PBFDO wrapped on its surface. The material of the friction electrode 130 is preferably Cu, Al, or TCO. It can be understood that the outer dimension of the top end of the elastic friction body 120 is larger than that of the bottom end, so as to obtain a longer friction distance and more induced charges when an external force is applied. For example, in one embodiment, the cross-sectional width of the second end 122 of the elastic friction body 120 is greater than the cross-sectional width of the first end 121 of the elastic friction body 120. At this time, when the elastic friction body 120 is under an external force, more induced charges can be generated at the second end 122 of the elastic friction body 120. According to needs, the elastic friction body 120 can be formed into a mushroom shape or an umbrella shape, which is not specifically limited here.

[0099] Since the friction electrode 130 is arranged around the elastic friction body 120, the elastic friction body 120 can obtain the possibility of contacting with the friction electrode 130 and generating relative friction under external forces in different vector directions. Therefore, when the user operates the display screen of the display through contact, the friction power generation function will be triggered. The following is a brief description of the friction power generation process: In the figure, the elastic friction body 120 is in a vertical state when it is not subjected to external force. When the elastic friction body 120 is subjected to an external force F from the left to the right, the elastic friction body 120 undergoes elastic bending deformation to the right. When the force F is large, the elastic friction body 120 may be bent at an angle greater than 180°, as shown in the state of 120-A in the figure. At this time, the end (second end) of the elastic friction body 120 is located at point A of the friction electrode 130. When the force is moderate, the elastic friction body 120 is bent at an angle close to 180°, as shown in the state of 120-B in the figure. At this time, the end (second end) of the elastic friction body 120 is located at point B of the friction electrode 130. When the applied force is small, the elastic friction body 120 is bent at an angle less than 180°, as shown in the state of 120-C in the figure. At this time, the end (second end) of the elastic friction body 120 is located at point C of the friction electrode 130. Regardless of the above situation, the end (second end) of the elastic friction body 120 will have the opportunity to contact the friction electrode 130 and have a relative displacement of different distances, thereby inducing charges at the end of the elastic friction body 120. After the external force disappears, the elastic friction body 120 will return to the initial state, contact the collection electrode 140 outside the friction electrode 130 and release the induced accumulated charge, or have a gap discharge with the collection electrode 140, so that the charge induced by the elastic friction body 120 is quickly released to the collection electrode 140 and transmitted to the energy collection device. It should be noted that, when the external force F is greater, the bending deformation of the elastic friction body 120 is greater, so that the bending angle is also greater.

[0100] The friction electrode 130 and the collecting electrode 140 are electrically connected to the positive and negative electrodes of the display device power supply (rechargeable battery) through the rectifier circuit. Since the voltage generated by friction power generation is relatively high, about several hundred volts to thousands of volts, and the current is generally tens of microamperes, and the maximum is only a few milliamperes, the voltage needs to be adjusted to a range slightly higher than the minimum charging voltage of the power supply (rechargeable battery) but lower than its rated maximum charging voltage through the rectifier circuit before the battery can be charged.

[0101] In this embodiment, the elastic friction body 120 has a columnar structure. When the elastic friction body 120 has a columnar structure, the maximum width of the cross-section of the middle region of the columnar structure is less than 1 / 2 of the radius corresponding to the arc formed when the columnar structure is bent under force.

[0102] It can be understood that the setting manner of the elastic friction body 120 is not limited to the above embodiments. Please also refer to Figure 7 , the elastic friction body 120 is insulated from the friction electrode 130. In order to make the elastic friction body 120 more likely to deform under an external force, the angle between the columnar elastic friction body 120 and the plane of the substrate 110 is less than or equal to 90 degrees. Preferably, the angle between the columnar elastic friction body 120 and the plane of the substrate 110 is between 50 degrees and 80 degrees. When the angle is set too small, the relative sliding distance between the end of the elastic friction body 120 and the friction electrode 130 after bending becomes smaller, affecting the power generation efficiency. When the angle is set too large, when the external force used by the user to touch the device is small, the bending amplitude of the end of the elastic friction body 120 may be insufficient, resulting in insufficient contact between the end of the elastic friction body 120 and the friction electrode 130, or even if the contact is sufficient, the sliding distance of the end on the surface of the friction electrode 130 is not long enough, which will also affect the power generation efficiency of the friction power generation device 100.

[0103] Furthermore, for the need of circuit layout, the friction electrode 130 and the collecting electrode 140 are at different heights (not in the same horizontal plane) on the surface of the same substrate 110, and the collecting electrode 140 is slightly lower or slightly higher than the friction electrode 130 in space. After the collecting electrode 140 obtains the charge transferred from the friction electrode 130, it directly conducts the charge through the circuit arranged under the friction electrode 130. An organic or inorganic insulating layer is also arranged between the circuits of the friction electrode 130 and the collecting electrode 140 to prevent short circuit between the two electrodes.

[0104] The structure of the elastic friction body 120 is not limited to the above embodiments. Please refer to Figure 8 , another embodiment of the present application provides a friction power generation device 200. The friction power generation device 200 includes a substrate 210, an elastic friction body 220, a friction electrode 230, and a collecting electrode 240.

[0105] The elastic friction body 220 is arranged on the surface of the substrate 210. The elastic friction body 220 undergoes elastic deformation under an external force and returns to its original state after the external force is removed.

[0106] The friction electrode 230 is disposed around the elastic friction body 220. The elastic friction body 220 has a first end 221 and a second end 222. The first end 221 of the elastic friction body 220 is insulated from the friction electrode 230. The second end 222 of the elastic friction body 220 contacts the friction electrode 230 when elastic deformation occurs.

[0107] The collecting electrode 240 is configured to collect the charges generated by the friction between the elastic friction body 220 and the friction electrode 230 during the deformation process and conduct them out.

[0108] In this embodiment, the materials and the setting manners of the friction electrode 230 and the collecting electrode 240 are similar to those of the friction electrode 130 and the collecting electrode 140 in the previous embodiment, and thus will not be elaborated herein.

[0109] In this embodiment, the elastic friction body 220 has a sheet-like structure. Specifically, the plurality of sheet-like elastic friction bodies 220 are arranged in a regular shape in an array pattern, or are arranged in a random shape with a non-array pattern locally while presenting a regular shape in an overall regular array form. The sheet-like structure may be a sheet-like structure with a uniform thickness, or a sheet-like structure with a non-uniform thickness, etc. As long as the elastic friction body 220 can generate elastic deformation under an external force and friction with the friction electrode 230. The height or length of the sheet-like structure is less than or equal to the thickness of the cavity for setting the triboelectric power generation device 200. The manufacturing method of the elastic friction body 220 includes, but is not limited to, being manufactured by means of photolithography technology, 3D printing technology, or nanoimprinting technology, etc.

[0110] In this embodiment, the purpose of setting the elastic friction body 220 as a sheet-like structure is as follows: when the result of the touch operation statistics of the display device shows that the vectors in a certain direction or in certain directions are relatively concentrated, the elastic friction body 220 can be set as a sheet-like structure, and the largest area surface or structural surface in the sheet-like structure is consistent with the maximum value of the vector statistics probability, so that the triboelectric power generation efficiency can be maximized. That is, when the elastic friction body 220 is a sheet-like structure, the largest area surface or structural surface in the sheet-like structure faces the surface where the force application direction of the triboelectric power generation device 200 is relatively concentrated.

[0111] It can be understood that the setting manner of the sheet-like elastic friction body 220 is not limited to the above embodiments. Please refer to Figure 9, in order to make the elastic friction body 220 more likely to deform under an external force, the angle between the elastic friction body 220 with a sheet-like structure and the plane of the substrate 210 is less than or equal to 90 degrees. Preferably, the angle between the elastic friction body 220 with a sheet-like structure and the plane of the substrate 210 is between 50 degrees and 80 degrees. When the angle is set too small, the relative sliding distance between the end of the elastic friction body 220 and the friction electrode 230 after bending becomes smaller, affecting the power generation efficiency. When the angle is set too large, when the external force used by the user to touch the device is small, the bending amplitude of the end of the elastic friction body 220 may be insufficient, resulting in insufficient contact between the end of the elastic friction body 220 and the friction electrode 230, or even if the contact is sufficient, the sliding distance of the end on the surface of the friction electrode 230 is not long enough, which will also affect the power generation efficiency of the friction power generation device 200.

[0112] In the above embodiments, the elastic friction body, the friction electrode, and the collecting electrode are all located on the same surface of the substrate. However, the arrangement manners of the elastic friction body, the friction electrode, and the collecting electrode are not limited to the above embodiments.

[0113] Please refer to Figure 10 , one embodiment of the present application provides a friction power generation device 300. The friction power generation device 300 includes a substrate 310, an elastic friction body 320, a friction electrode 330, and a collecting electrode 340. In this embodiment, the friction power generation device 300 further includes a second substrate 350.

[0114] The elastic friction body 320 is disposed on the surface of the substrate 310. The elastic friction body 320 undergoes elastic deformation under an external force and returns to its original state after the external force is withdrawn.

[0115] The friction electrode 330 is disposed around the projection of the elastic friction body 320 on the surface of the second substrate 350 in space. The elastic friction body 320 has a first end 321 and a second end 322. The first end 321 of the elastic friction body 320 is insulated from the substrate 310. The second end 322 of the elastic friction body 320 contacts the friction electrode 330 when undergoing elastic deformation.

[0116] The collecting electrode 340 is used to collect the charges generated by the friction between the elastic friction body 320 and the friction electrode 330 during the deformation process and conduct them out.

[0117] In this embodiment, the triboelectric power generation device 300 includes a second substrate 350. At this time, the elastic friction body 320 is disposed on the surface of the substrate 310. The friction electrode 330 and the collection electrode 340 are disposed on the surface of the second substrate 350. At this time, the elastic friction body 320 and the friction electrode 330 and the collection electrode 340 are respectively disposed on two opposite surfaces. As needed, the substrate 310 may be the upper substrate of a display (or a touch device), and the second substrate 350 may be the lower substrate of a display (or a touch device). At this time, the elastic friction body 320 is disposed on the inner surface of the upper substrate of the display (or the touch device), and the friction electrode 330 and the collection electrode 340 are adjacently disposed on the inner surface of the lower substrate of the display (or the touch device). In this way, the process of manufacturing the entire triboelectric power generation device 300 can be distributed to different substrate manufacturing processes, making it possible for some processes to be reworked and reducing the overall manufacturing difficulty of the triboelectric power generation device 300.

[0118] In this embodiment, when the friction electrode 330 and the collection electrode 340 are disposed on the surface of the second substrate 350, the charges generated by the elastic friction body 320 during the friction process are transmitted to the collection electrode 340 through air discharge or contact discharge.

[0119] In this embodiment, the height of the elastic friction body 320 is less than or equal to the distance between the substrate 310 and the second substrate 350.

[0120] In this embodiment, the elastic friction body 320 has a columnar structure. It can be understood that in another embodiment, the elastic friction body 320 may also have a sheet structure.

[0121] Please refer to Figure 11 , one embodiment of the present application provides a triboelectric power generation device 400. The triboelectric power generation device 400 includes a substrate 410, an elastic friction body 420, a friction electrode 430, and a collection electrode 440. In this embodiment, the triboelectric power generation device 400 further includes a second substrate 450.

[0122] The elastic friction body 420 is disposed on the surface of the substrate 410. The elastic friction body 420 undergoes elastic deformation under an external force and returns to its original state after the external force is removed.

[0123] The friction electrode 430 is disposed around the projection of the elastic friction body 420 on the surface of the second substrate 450. The elastic friction body 420 has a first end 421 and a second end 422. The first end 421 of the elastic friction body 420 is insulated from the substrate 410. The second end 422 of the elastic friction body 420 contacts the friction electrode 430 when elastic deformation occurs.

[0124] The collecting electrode 440 is used to conduct away the charges generated by the elastic friction body 420 during the deformation process.

[0125] In this embodiment, the friction power generation device 400 includes a second substrate 450. At this time, the elastic friction body 420 is arranged on the surface of the substrate 410. The friction electrode 430 and the collecting electrode 440 are arranged on the surface of the second substrate 450. At this time, the elastic friction body 420 and the friction electrode 430 and the collecting electrode 440 are arranged on two opposite surfaces respectively. As required, the substrate 410 can be the upper substrate of the display (or touch device), and the second substrate 450 can be the lower substrate of the display (or touch device). At this time, the elastic friction body 420 is arranged on the inner surface of the upper substrate of the display (or touch device), and the friction electrode 430 and the collecting electrode 440 are adjacently arranged on the inner surface of the lower substrate of the display (or touch device). In this way, the manufacturing process of the entire friction power generation device 400 can be distributed to different substrate manufacturing processes, so that some processes have the possibility of rework, reducing the overall manufacturing difficulty of the friction power generation device 400. In this embodiment, the elastic friction body 420 is a sheet structure.

[0126] One embodiment of the present invention further provides a display device, which includes the friction power generation device as described in any one of the above embodiments.

[0127] See also Figure 12 In one embodiment, the display device 500 includes a display upper substrate 510 , a frame adhesive 520 , and a protective cover 530 .

[0128] In this embodiment, the display device 500 includes only one solid substrate, and the packaging structure of the display device 500 is composed of a thin film layer. At this time, the friction power generation device 100 is arranged between the display surface and the transparent protective cover, that is, it can be arranged on the surface of the display panel 510 or on the inner surface of the protective cover 530.

[0129] As required, in the friction power generation device 100, the elastic friction body 120 is located in the non-display area between the sub-pixels of the display device 500, and is distributed in an array pattern on the display upper substrate 510 or the protective cover 530, such as Figure 13 At this time, the arrangement of the elastic friction body 120 has no effect on the display effect of the display device 500. As required, when the height (or length) of the adjacent elastic friction body 120 does not exceed the outer dimensions of a single sub-pixel, the elastic friction body 120 may also be arranged in the sub-pixel of the display without affecting the display effect, such asFigure 14 As shown. At this time, the distance between two adjacent elastic friction bodies 120 is greater than the height (or length) of any one of them. Preferably, the distance between two adjacent elastic friction bodies 120 is the sum of their heights. Such a design can enable any two adjacent elastic friction bodies 120 to have the opportunity to share a collecting electrode, and can maximize the layout density of the elastic friction bodies 120.

[0130] As needed, the display device 500 further includes a display lower substrate 540. The display lower substrate 540 is disposed on a surface of the display upper substrate 510 opposite to the touch control device 520.

[0131] Please refer to Figure 15 , in one embodiment, the display device 600 includes a display upper substrate 610, a protection cover plate 620, and a display lower substrate 630.

[0132] The protection cover plate 620 is disposed on one surface of the display upper substrate 610.

[0133] The display lower substrate 630 is disposed on the other surface of the display upper substrate 610.

[0134] Wherein, a first adhesive material 640 is disposed between the display upper substrate 610 and the protection cover plate 620. A second adhesive material 650 is disposed between the display upper substrate 610 and the display lower substrate 630. The triboelectric power generation device 100 is located in a space formed by the first adhesive material 640 and adjacent substrates (the display upper substrate 610 and the protection cover plate 620), or the triboelectric power generation device 100 is located in a space formed by the second adhesive material 650 and adjacent substrates (the display upper substrate 610 and the display lower substrate 630).

[0135] In this embodiment, the display device is composed of two upper and lower substrates and an adhesive material for bonding the substrates. The upper substrate or the lower substrate in the display device can be a structure with electrical and / or optical functions respectively, or one of them only serves as a packaging function to improve the lifespan of the device. As needed, the display device is equipped with an internal or external touch control function. When the display device has an internal touch control function, the touch control device can be disposed on the surface of the upper substrate or the lower substrate. The triboelectric power generation functional structure is disposed inside the display device or between the display device and the protection cover plate.

[0136] Please refer to Figure 16 , in one embodiment, the display device 700 includes a display upper substrate 710, a touch control device 720, a protection cover plate 730, and a display lower substrate 740.

[0137] The touch device 720 is disposed on one surface of the upper substrate 710 of the display.

[0138] The protection cover plate 730 is disposed on the surface of the touch device 720.

[0139] The lower substrate 740 of the display is disposed on the other surface of the upper substrate 710 of the display.

[0140] Wherein, a first adhesive material 750 is disposed between the upper substrate 710 of the display and the touch device 720. A second adhesive material 760 is disposed between the upper substrate 710 of the display and the lower substrate 740 of the display. A third adhesive material 770 is disposed between the touch device 720 and the protection cover plate 730. The triboelectric power generation device 100 is located in the space formed by the first adhesive material 750 and the adjacent substrates (the upper substrate 710 of the display and the touch device 720), or the triboelectric power generation device 100 is located in the space formed by the second adhesive material 760 and the adjacent substrates (the upper substrate 710 of the display and the lower substrate 740 of the display), or the triboelectric power generation device 100 is located in the space formed by the third adhesive material 770 and the adjacent substrates (the protection cover plate 730 and the touch device 720).

[0141] In this embodiment, when the display device has an external touch function, the triboelectric power generation device can be disposed inside the touch device, inside the display device, between the touch device and the display device, and / or between the touch device and the protection cover plate. As needed, the display device can also be equipped with an internal or external solar cell. When the display device has an internal solar cell, the solar cell can be disposed on the surface of the upper substrate or the lower substrate. When the solar cell is external to the display device, the solar cell can be attached to the upper surface of the display device, or attached to the surface of the touch device. At this time, the triboelectric power generation device can also be disposed inside the solar cell, or disposed between the solar cell and the display device or the touch device or the protection cover plate.

[0142] The above embodiments are the preferred embodiments of the present application, but the embodiments of the present application are not limited by the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present application shall be equivalent replacement methods and are all included in the protection scope of the present application.

Claims

1. A friction power generation device, characterized in that: include: substrate; An elastic friction body is arranged on the surface of the substrate, and the elastic friction body is elastically deformed under the action of an external force and returns to an original state after the external force is removed; a friction electrode, arranged around the elastic friction body, the elastic friction body having a first end and a second end, the first end of the elastic friction body being insulated from the friction electrode, and the second end of the elastic friction body being in contact with the friction electrode when elastic deformation occurs; The collecting electrode is used to collect and conduct away the electric charges generated by the elastic friction body during the deformation and friction with the friction electrode.

2. The friction power generation device according to claim 1, characterized in that: The collecting electrode is arranged around the friction electrode, and the collecting electrode and the friction electrode are insulated from each other.

3. The friction power generation device according to claim 1, characterized in that: The elastic friction body is a columnar or sheet-like structure, and the multiple columnar or sheet-like elastic friction bodies are arranged in a regular array shape, or arranged in a random shape that is partially non-array-like, but is a regular array shape as a whole.

4. The friction power generation device according to claim 3, characterized in that: The collecting electrodes of the plurality of elastic friction bodies are connected to each other, so that the plurality of elastic friction bodies share the same collecting electrode.

5. The friction power generation device according to claim 1, characterized in that: The elastic friction body, the friction electrode, and the collecting electrode are all located on the same surface of the substrate; Alternatively, the friction power generation device includes a second substrate, the elastic friction body is arranged on the surface of the substrate, and the friction electrode and the collecting electrode are arranged on the surface of the second substrate.

6. The friction power generation device according to claim 5, characterized in that: When the friction electrode and the collecting electrode are arranged on the surface of the second substrate, the charges generated by the elastic friction body during the friction process are transmitted to the collecting electrode through contact discharge or gap discharge.

7. The friction power generation device according to claim 5, characterized in that: The height of the elastic friction body is less than or equal to the distance between the first substrate and the second substrate.

8. The friction power generation device according to any one of claims 1 to 7, characterized in that: The friction electrode and the collecting electrode are two physically separated structures in the horizontal direction or in the vertical direction, and the distance between the two is greater than 2 micrometers.

9. The friction power generation device according to claim 8, characterized in that: The collecting electrode is configured to have a first shape with a local protrusion on one side close to the friction electrode; And / or, a side of the friction electrode close to the collecting electrode is configured to be a partially protruding second shape; The first shape and the second shape are arranged opposite to each other or coupled to each other.

10. The friction power generation device according to claim 9, characterized in that: The first shape and the second shape are triangular or semicircular.

11. The friction power generation device according to claim 10, characterized in that: When the first shape and the second shape are triangular, an angle of a protruding portion of the first shape and the second shape is greater than or equal to 90 degrees.

12. The friction power generation device according to claim 11, characterized in that: Corners of the protruding parts of the first shape and the second shape are chamfered, and the radius of the chamfer is greater than or equal to 1.0 mm.

13. The friction power generation device according to any one of claims 1 to 7, characterized in that: The materials used to make the friction electrode and the collecting electrode include: metal materials, TCO materials or semiconductor materials with an electrical conductivity greater than 1000s / m.

14. The friction power generation device according to any one of claims 1 to 7, characterized in that: The elastic friction body is composed of a column or sheet structure with a high-conductivity material wrapped on the surface, and the high-conductivity material includes PEDOT:PSS or PBFDO.

15. The friction power generation device according to claim 3, characterized in that: When the elastic friction body is a columnar structure, the maximum width of the cross section of the middle region of the columnar structure is less than 1 / 2 of the radius corresponding to the arc formed when the columnar structure is bent under force.

16. The friction power generation device according to claim 3, characterized in that: When the elastic friction body is a sheet-like structure, the side or structural surface with the largest area in the sheet-like structure faces the side where the force direction of the friction power generation device is relatively concentrated.

17. The friction power generation device according to claim 3, characterized in that: The angle between the columnar or sheet-like elastic friction body and the substrate plane is less than or equal to 90 degrees.

18. The friction power generation device according to claim 17, characterized in that: The angle between the columnar or sheet-like elastic friction body and the substrate plane is between 50 degrees and 80 degrees.

19. The friction power generation device according to claim 3, characterized in that: The cross-sectional width of the second end of the elastic friction body is greater than the cross-sectional width of the first end of the elastic friction body.

20. A display device, characterized in that: It comprises a friction power generation device as described in any one of claims 1-19.

21. The display device according to claim 20, characterized in that: include: Display upper substrate; A touch device, disposed on the display upper substrate; as well as A protective cover plate, disposed on the touch control device; Wherein, the friction power generation device is arranged inside the touch control device.

22. The display device according to claim 20, characterized in that include: Display upper substrate; A protective cover plate, disposed on one side of the display upper substrate; A display lower substrate, arranged on the other side of the display upper substrate; Among them, a first adhesive material is arranged between the upper substrate of the display and the protective cover plate, a second adhesive material is arranged between the upper substrate of the display and the lower substrate of the display, and the friction power generation device is located in the space formed by the first adhesive material and the adjacent substrate, or the friction power generation device is located in the space formed by the second adhesive material and the adjacent substrate.

23. The display device according to claim 20, characterized in that include: Display upper substrate; A touch device, disposed on one side of the display substrate; A protective cover plate, disposed on the surface of the touch device; A display lower substrate, arranged on the other side of the display upper substrate; Among them, a first adhesive material is arranged between the upper substrate of the display and the touch device, a second adhesive material is arranged between the upper substrate of the display and the lower substrate of the display, and a third adhesive material is arranged between the touch device and the protective cover plate. The friction power generation device is located in the space formed by the first adhesive material and the adjacent substrate, or the friction power generation device is located in the space formed by the second adhesive material and the adjacent substrate, or the friction power generation device is located in the space formed by the third adhesive material and the adjacent substrate.

24. The display device according to any one of claims 20 to 23, characterized in that: In the friction power generation device, the elastic friction bodies are located in the non-display area between the sub-pixels of the display device and are distributed in an array.

25. The display device according to claim 23, characterized in that: Also includes: A solar cell, wherein the solar cell is built-in or externally mounted in the display device; When the display device has the solar cell built therein, the solar cell may be arranged on the surface of the display upper substrate or the display lower substrate; When the solar cell is externally placed on the display device, the solar cell can be attached to the upper surface of the display device, or to the surface of the touch device; wherein the friction power generation device is arranged inside the solar cell, or between the solar cell and the display device or the touch device or the protective cover.

Images