Conductive cover plate and smart watch

Abstract

The utility model discloses a conductive cover plate, comprising a flat cover plate having an inner surface and an outer surface arranged oppositely; the first conductive film is arranged on the outer surface of the flat cover plate; the second conductive film is arranged on the surface of one side, opposite to the flat cover plate, of the first conductive film; wherein the resistivity of the first conductive film is smaller than that of the second conductive film, and the hardness of the second conductive film is higher than that of the first conductive film. The conductive cover plate can improve the wear resistance of the conductive film. The utility model further discloses an intelligent watch which comprises the conductive cover plate.

Description

Technical Field

[0001] The utility model relates to the field of smart watches, and in particular to a conductive cover plate and a smart watch. Background Art

[0002] At present, with the increasing demand for smart watches, health-related aspects are receiving more and more attention. In order to obtain accurate information from the human body more intuitively, some smart watches have designed conductive films on the back cover. Through the contact between the skin and the conductive film, the information is transmitted to the chip in the case for health analysis. The conductive film placed on the back cover is exposed to the outside and will rub against the skin for a long time during use. It may even collide with hard objects during wearing, so there are high requirements for its abrasion resistance. Utility Model Content

[0003] In order to solve the above-mentioned deficiencies in the prior art, the utility model provides a conductive cover plate, which can improve the wear resistance of the conductive film.

[0004] The utility model also provides a smart watch, comprising the above-mentioned conductive cover plate.

[0005] The technical problem to be solved by the utility model is achieved through the following technical solutions:

[0006] A conductive cover plate, comprising:

[0007] A flat cover plate having an inner surface and an outer surface disposed opposite to each other;

[0008] A first conductive film is disposed on the outer surface of the flat cover;

[0009] A second conductive film is disposed on a surface of the first conductive film that is opposite to the flat cover plate;

[0010] The resistivity of the first conductive film is smaller than that of the second conductive film, and the hardness of the second conductive film is higher than that of the first conductive film.

[0011] Furthermore, the first conductive film is a pure metal film or a metal alloy film.

[0012] Furthermore, the second conductive film is a semiconductor alloy film.

[0013] Furthermore, the thickness of the first conductive film is 10-100 nm, and the thickness of the second conductive film is 5-50 nm.

[0014] Furthermore, a hardening treatment layer is formed on a surface of the second conductive film that is opposite to the first conductive film.

[0015] Furthermore, the flat cover plate also has a side surface, and the side surface is connected between the inner surface and the outer surface; the side surface and the inner surface of the flat cover plate are provided with terminal pins connected to the first conductive film.

[0016] Furthermore, the terminal pins are formed of conductive ink.

[0017] Furthermore, the flat cover plate is a glass cover plate, a plastic cover plate or a sapphire cover plate.

[0018] A smart watch comprises a watch case, a watch dial, a front cover plate and the above-mentioned conductive cover plate, wherein the watch case has an assembly groove inside, the front cover plate is arranged on the front side of the assembly groove of the watch case, the conductive cover plate is arranged on the back side of the assembly groove of the watch case and makes the second conductive film exposed, and the watch dial is arranged in the assembly groove of the watch case; a main control board is arranged on the back side of the watch dial, and the main control board is electrically connected to the first conductive film of the conductive cover plate through an electrical connector.

[0019] Furthermore, the smart watch also includes a strap, which is arranged on both ends of the watch case and is used to wear the smart watch on the wrist through the strap, so that the second conductive film of the conductive cover plate contacts the wrist skin.

[0020] The utility model has the following beneficial effects: the conductive cover plate of the utility model is used as the back cover plate of the smart watch, and adopts the first conductive film with good conductive performance as the conductive film body to collect the microcurrent on the human skin, and covers the surface of the first conductive film with a second conductive film with higher hardness, and utilizes the second conductive film to protect the first conductive film to avoid the first conductive film being exposed to the outside, and can prevent the first conductive film from being worn due to long-term contact and friction with external objects such as the skin or collision with hard objects; at the same time, the second conductive film is also conductive, and after contacting the skin, it can transfer the microcurrent on the skin to the first conductive film, and stacking the second conductive film on the first conductive layer is equivalent to increasing the overall thickness of the conductive film. Compared with only using the first conductive film, the whole has lower resistance and better conductive performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a diagram of the stacking structure of the conductive cover plate provided by the utility model.

[0022] Figure 2 This is a stacking structure diagram of another conductive cover plate provided by the utility model.

[0023] Figure 3 This is a schematic diagram of the structure of the smart watch provided by the utility model. DETAILED DESCRIPTION

[0024] The present invention is described in detail below in conjunction with the accompanying drawings and embodiments, examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0025] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0026] In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first", "second", and "third" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0027] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix", "set" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] Embodiment 1

[0029] like Figure 1 As shown, a conductive cover plate comprises:

[0030] A flat cover plate 41 having an inner surface and an outer surface arranged opposite to each other;

[0031] A first conductive film 42 is disposed on the outer surface of the flat cover plate 41;

[0032] A second conductive film 43 is disposed on a surface of the first conductive film 42 which faces away from the flat cover plate 41;

[0033] The resistivity of the first conductive film 42 is smaller than that of the second conductive film 43 , and the hardness of the second conductive film 43 is higher than that of the first conductive film 42 .

[0034] The conductive cover of the utility model is used as the back cover of a smart watch, and adopts a first conductive film 42 with good conductive performance as the conductive film body to collect microcurrents on human skin, and covers the surface of the first conductive film 42 with a second conductive film 43 with higher hardness, and utilizes the second conductive film 43 to protect the first conductive film 42 to avoid the first conductive film 42 being exposed to the outside, and to prevent the first conductive film 42 from being worn due to long-term contact and friction with external objects such as skin or collision with hard objects; at the same time, the second conductive film 43 is also conductive, and after contacting the skin, it can transfer the microcurrent on the skin to the first conductive film 42, and stacking the second conductive film 43 on the first conductive layer is equivalent to increasing the overall thickness of the conductive film, and compared with only using the first conductive film 42, the whole has lower resistance and better conductive performance.

[0035] The first conductive film 42 is a pure metal film or a metal alloy film, including but not limited to at least one of a chromium film, a titanium film, a silver film and a gold film, or including but not limited to at least one of a copper alloy film, a nickel-aluminum alloy film and a gold-tin alloy film.

[0036] The second conductive film 43 is a semiconductor alloy film, including but not limited to at least one of a carbon silicon alloy film, a germanium silicon alloy film, a gallium arsenide aluminum alloy film and a cadmium sulfide zinc alloy film.

[0037] In this embodiment, the thickness of the first conductive film 42 is 10-100 nm, and the thickness of the second conductive film 43 is 5-50 nm.

[0038] The flat cover 41 also has a side surface, which is connected between the inner surface and the outer surface; the side surface and the inner surface of the flat cover 41 are provided with terminal pins 44 connected to the first conductive film 42, which are used to lead out the first conductive film 42 to facilitate electrical connection with the main control board of the smart watch.

[0039] In this embodiment, the terminal pins 44 are formed of conductive ink and are formed on the side surface and inner surface of the flat cover 41 by screen printing.

[0040] The flat cover plate 41 may be, but is not limited to, a glass cover plate, a plastic cover plate, or a sapphire cover plate.

[0041] Embodiment 2

[0042] As an optimization solution of the first embodiment, in this embodiment, if Figure 2As shown, a hardening treatment layer 431 is formed on a surface of the second conductive film 43 facing away from the first conductive film 42 .

[0043] The conductive cover plate of the present invention hardens the surface of the second conductive film 43 to form the hardened layer 431 on the surface of the second conductive film 43 , thereby further improving the surface hardness and wear resistance of the second conductive film 43 .

[0044] The second conductive film 43 is made of different materials, and its hardening treatment process is different. In this embodiment, the carbon-silicon alloy film is used as the second conductive film 43. When the carbon-silicon alloy target is deposited on the surface of the first conductive film 42 by the magnetron sputtering process, nitrogen is introduced into the magnetron sputtering chamber in the second half of the magnetron sputtering, so that part of the carbon and silicon react with the nitrogen to generate high-density carbon nitride and silicon nitride, so that the surface of the carbon-silicon alloy film is doped with carbon nitride and silicon nitride to form a harder hardened layer 431; by controlling the proportion of nitrogen to be between 20% and 30% (the volume proportion of the gasified carbon-silicon alloy), the carbon-silicon alloy film can meet the requirements of conductivity and wear resistance at the same time.

[0045] Embodiment 3

[0046] like Figure 3 As shown, a smart watch includes a watch case 10, a dial 20, a front cover 30 and the conductive cover 40 described in Example 1 or Example 2, wherein the watch case 10 has an assembly slot 11, the front cover 30 is arranged on the front side of the assembly slot 11 of the watch case 10, the conductive cover 40 is arranged on the back side of the assembly slot 11 of the watch case 10 and the second conductive film 43 is exposed, and the dial 20 is arranged in the assembly slot 11 of the watch case 10; a main control board 50 is arranged on the back side of the dial 20, and the main control board 50 is electrically connected to the first conductive film 42 of the conductive cover 40 through an electrical connector 70.

[0047] The smart watch of the utility model adopts the conductive cover plate 40 as the back cover plate, and the conductive cover plate 40 adopts the first conductive film 42 with good conductive performance as the conductive film body to collect the microcurrent on the human skin, and covers the surface of the first conductive film 42 with a second conductive film 43 with higher hardness, and the first conductive film 42 is protected by the second conductive film 43 to avoid the first conductive film 42 being exposed to the outside, and the first conductive film 42 can be prevented from being worn due to long-term contact and friction with external objects such as the skin or collision with hard objects; at the same time, the second conductive film 43 is also conductive, and after contacting the skin, it can transfer the microcurrent on the skin to the first conductive film 42, and stacking the second conductive film 43 on the first conductive layer is equivalent to increasing the overall thickness of the conductive film. Compared with only using the first conductive film 42, the whole has lower resistance and better conductive performance.

[0048] The dial 20 is a mechanical dial 20 , an electronic dial 20 , or a mechanical and electronic combination dial 20 .

[0049] In this embodiment, the electrical connector 70 is a flexible circuit board, one end of which is electrically connected to the main control board 50 , and the other end of which is electrically connected to the first conductive film 42 through the terminal pin 44 .

[0050] The smart watch further includes a strap 60 , which is disposed on both ends of the watch case 10 , and is used to wear the smart watch on a wrist through the strap 60 , thereby making the second conductive film 43 of the conductive cover plate 40 contact with the wrist skin.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the utility model rather than to limit them. Although the embodiments of the utility model are described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the embodiments of the utility model can still be modified or replaced by equivalents, and these modifications or equivalent replacements cannot cause the modified technical solutions to deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A conductive cover plate, characterized in that: include: A flat cover plate having an inner surface and an outer surface disposed opposite to each other; A first conductive film is disposed on the outer surface of the flat cover; A second conductive film is disposed on a surface of the first conductive film that is opposite to the flat cover plate; The resistivity of the first conductive film is smaller than that of the second conductive film, and the hardness of the second conductive film is higher than that of the first conductive film.

2. The conductive cover plate according to claim 1, characterized in that: The first conductive film is a pure metal film or a metal alloy film.

3. The conductive cover plate according to claim 1, characterized in that: The second conductive film is a semiconductor alloy film.

4. The conductive cover plate according to claim 1, characterized in that: The thickness of the first conductive film is 10-100 nm, and the thickness of the second conductive film is 5-50 nm.

5. The conductive cover plate according to claim 1, characterized in that: A hardening treatment layer is formed on a surface of the second conductive film on a side facing away from the first conductive film.

6. The conductive cover plate according to claim 1, characterized in that: The flat cover plate also has a side surface, and the side surface is connected between the inner surface and the outer surface; terminal pins connected to the first conductive film are arranged on the side surface and the inner surface of the flat cover plate.

7. The conductive cover plate according to claim 6, characterized in that: The terminal pins are formed of conductive ink.

8. The conductive cover plate according to claim 1, characterized in that: The flat cover plate is a glass cover plate, a plastic cover plate or a sapphire cover plate.

9. A smart watch, characterized in that: It comprises a watch case, a dial, a front cover plate and the conductive cover plate as claimed in claim 1, wherein the watch case has an assembly groove, the front cover plate is arranged on the front side of the assembly groove of the watch case, the conductive cover plate is arranged on the back side of the assembly groove of the watch case and makes the second conductive film exposed, and the dial is arranged in the assembly groove of the watch case; a main control board is arranged on the back side of the dial, and the main control board is electrically connected to the first conductive film of the conductive cover plate through an electrical connector.

10. The smart watch according to claim 9, characterized in that: The smart watch also includes a watch strap, which is arranged on both ends of the watch case and is used to wear the smart watch on a wrist through the watch strap, so that the second conductive film of the conductive cover plate contacts the wrist skin.

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