CN112928443B

CN112928443B - Dial and watch

Info

Publication number: CN112928443B
Application number: CN202110093544.7A
Authority: CN
Inventors: 黄昊
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2021-01-22
Filing date: 2021-01-22
Publication date: 2023-08-22
Anticipated expiration: 2041-01-22
Also published as: CN112928443A

Abstract

The application discloses a dial plate and a watch, wherein the dial plate comprises: the display device comprises a base, a conducting plate, a display screen, a radiator and a feed source, wherein the conducting plate is arranged between the base and the display screen, the base, the conducting plate and the display screen are sequentially connected, the base is grounded, and a feed point is arranged on the radiator; the surface of the conductive plate is provided with a strip-shaped slit, the strip-shaped slit is positioned at the edge of the conductive plate, and the radiator and the strip-shaped slit are arranged oppositely; the feed source is electrically connected with the feed point, and the radiator and the strip-shaped slit form a slot antenna. The scheme provided by the embodiment of the application at least can solve the problem of low radiation efficiency of the antenna of the existing watch.

Description

Dial and watch

Technical Field

The application relates to the technical field of electronic products, in particular to a dial and a watch.

Background

In the prior art, a smart watch generally includes an antenna for receiving and transmitting signals, and because the internal space in the smart watch is smaller, the existing smart watch generally uses a metal frame of a dial plate as a radiator of the antenna. Because in current intelligent wrist-watch, metal frame can be to the radiating energy of all directions, consequently, the user is wearing the circumstances of wrist-watch, because the influence of arm, the efficiency of antenna will reduce by a wide margin to lead to the lower problem of radiation efficiency of antenna.

Disclosure of Invention

The dial and the watch provided by the embodiment of the application can solve the problem of low radiation efficiency of the antenna of the existing watch.

In order to solve the technical problems, the application is realized as follows:

in a first aspect, an embodiment of the present application provides a dial, including a base, a conductive plate, a display screen, a radiator and a feed source, where the conductive plate is disposed between the base and the display screen, and the base, the conductive plate and the display screen are sequentially connected, the base is grounded, and the radiator is provided with a feed point;

the surface of the conductive plate is provided with a strip-shaped slit, the strip-shaped slit is positioned at the edge of the conductive plate, and the radiator and the strip-shaped slit are arranged oppositely;

the feed source is electrically connected with the feed point, and the radiator and the strip-shaped slit form a slot antenna.

In a second aspect, an embodiment of the present application provides a watch, including a dial as described in the first aspect.

In the embodiment of the application, the base and the strip-shaped slits on the conductive plate form a groove-shaped structure with an opening facing the display screen, so that when the energy fed into the radiator by the feed source is coupled to the inner wall of the strip-shaped slits, the radiation is carried out along the opening direction of the groove-shaped structure, namely, the main radiation direction faces the display screen. Compared with the prior art, the antenna in the watch can radiate energy to one side of the base of the watch, so that the influence of the wrist of the user on the radiation efficiency of the antenna under the condition that the user wears the watch can be effectively reduced, and the radiation efficiency of the antenna in the watch can be further improved.

Drawings

FIG. 1 is a schematic diagram of a dial according to an embodiment of the present application;

FIG. 2 is a schematic diagram of a dial according to a second embodiment of the present application;

fig. 3 is a schematic structural diagram of a matching circuit according to an embodiment of the present application.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged, as appropriate, such that embodiments of the present application may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type, and are not limited to the number of objects, such as the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.

The dial and the watch provided by the embodiment of the application are described in detail below through specific embodiments and application scenes thereof with reference to the accompanying drawings.

Referring to fig. 1-3, a dial provided in an embodiment of the present application includes a base 100, a conductive plate 200, a display screen (not shown in the figure), a radiator 300 and a feed source 500, where the conductive plate 200 is disposed between the base 100 and the display screen, and the base 100, the conductive plate 200 and the display screen are sequentially connected, and the radiator 300 is provided with a feed point 301; a strip-shaped slit 400 is formed on the surface of the conductive plate 200, the strip-shaped slit 400 is positioned at the edge of the conductive plate 200, and the radiator 300 is arranged opposite to the strip-shaped slit 400; the feed source 500 is electrically connected to the feed point 301, and the radiator 300 and the strip-shaped slit 400 form a slot antenna.

The radiator 300 may be a metal conductor. The radiator 300 may be connected to the base 100, and the radiator 300 may extend into the bar-shaped slit 400 from the base 100 side. In addition, the radiator 300 may be connected to other components of the conductive board 200 near the display screen, and extend into the strip-shaped slit 400 from the display screen side, for example, the radiator 300 may be connected to a circuit board between the conductor and the display screen. In addition, the radiator 300 may be disposed between the base 100 and the plane of the strip-shaped slit 400, so that the coupling between the radiator 300 and the strip-shaped slit 400 may be also achieved, and the energy fed into the radiator 300 by the feed source 500 is coupled to the inner wall of the strip-shaped slit 400 for radiation.

The strip-shaped slits 400 may be disposed along the circumferential direction of the conductive plate 200, so as to enhance the effect of the strip-shaped slits 400 in radiating energy outwards by disposing the strip-shaped slits 400 at the edge of the conductive plate 200.

Gaps are formed between the radiator 300 and two opposite inner walls of the strip slit 400, so that coupling between the radiator 300 and the inner walls of the strip slit 400 is realized, and thus, when the energy of the feed source 500 is fed into the radiator 300, the energy in the radiator 300 can be coupled to the inner walls of the strip slit 400 to radiate.

The base 100 may be a plate body with conductive properties, and since the slot 400 and the base 100 may form a slot structure with an opening facing the display screen, when the energy of the antenna is coupled to the inner wall of the slot 400, the energy of the inner wall of the slot 400 radiates toward the opening of the slot, i.e. the energy of the antenna of the watch radiates mainly in the direction facing the display screen, and the energy radiated to the side of the base 100 is relatively small. Because less energy is radiated to the dial plate base 100 side, and when the user wears the watch, the user's wrist mainly reduces the radiation efficiency of the energy radiated to the base 100 side, so that the effect of the user's wrist on the radiation efficiency of the antenna can be effectively reduced by adopting the watch with the dial plate.

The strip-shaped slit 400 may be used as the radiator 300 of a common antenna, for example, may be used as the radiator 300 of a GPS antenna, the radiator 300 of a WIFI antenna, or the like.

The base 100 may be a plate with conductive performance, and because the base 100 is grounded, the electric potential of the base 100 is the same as the electric potential of the wrist of the user, in this case, no matter whether the watch is in a wearing state, the electric potential of each position of the watch is kept unchanged, so that the influence of the body of the user on the radiation process of the antenna in the watch is further reduced. Meanwhile, since the base 100 forms a ground plate, it is possible to effectively block the energy coupled to the inner wall of the bar slit 400 from radiating to one side of the base 100. To further ensure that the radiation direction of the antenna in the watch is mainly directed towards the display screen side.

In this embodiment, a slot structure with an opening facing the display screen is formed by the base 100 and the strip slit 400 on the conductive plate 200, so that when the energy fed to the radiator 300 by the feed source is coupled to the inner wall of the strip slit 400, the radiation is performed along the opening direction of the slot structure, i.e. the main radiation direction is facing the display screen. Compared with the prior art, the antenna in the watch can radiate energy to one side of the base 100 of the watch, so that the influence of the wrist of the user on the radiation efficiency of the antenna under the condition that the user wears the watch can be effectively reduced, and the radiation efficiency of the antenna in the watch can be further improved.

Alternatively, the radiator 300 is disposed along the length direction of the bar slit 400.

Specifically, referring to fig. 1, the radiator 300 has a bar shape, and the radiator 300 is disposed along the length direction of the bar slit 400. Wherein the length of the radiator 300 may be smaller than the length of the bar slit 400.

In this embodiment, since the radiator 300 is disposed along the length direction of the strip-shaped slit 400, the area of the opposite portion of the strip-shaped slit 400 and the radiator 300 can be increased, so as to further improve the effect of coupling the antenna energy from the radiator 300 to the strip-shaped slit 400, and further improve the radiation efficiency of the antenna.

Alternatively, the conductive plate 200 has a circular plate shape, and the bar slit 400 is an arc slit arranged along a circumferential direction of the conductive plate 200.

The strip-shaped slit 400 may be a circular slit arranged along the circumferential direction of the conductive plate 200, and the strip-shaped slit 400 may be an arc-shaped slit, for example, an arc-shaped slit of 3/5 to 4/5 circle.

In this embodiment, the electrical length of the strip-shaped slot 400 may be 1/2 wavelength of the antenna center resonant frequency of the wristwatch, so that the radiator 300 may excite the loop mode of the strip-shaped slot 400, thereby further improving the radiation efficiency of the antenna in the wristwatch.

Optionally, the conductive plate 200 includes a blocking portion 201, the blocking portion 201 is located on a circumference where the strip-shaped slit 400 is located, and the blocking portion 201 blocks the strip-shaped slit 400;

the conductive plate 200 is rotatably connected with the base 100, the length of the radiator 300 is smaller than that of the strip-shaped slit 400, and the barrier 201 moves towards or away from the radiator 300 on the circumference of the strip-shaped slit 400 during the rotation of the conductive plate 200 relative to the base 100.

Referring to fig. 1, the two ends of the strip-shaped slit 400 are separated by the barrier 201, i.e. the strip-shaped slit 400 is a non-closed loop slit. The conductive plate 200 may further include a circular portion 202 at a middle portion and an annular portion 203 at an outer circumference, and both ends of the barrier 201 are respectively connected with a sidewall of the circular portion 202 and an inner sidewall of the annular portion 203.

Specifically, in the process of receiving and transmitting signals, the signal strength of the antenna may be different in different directions due to a large relationship between the strength of the signal and the relative position between the antenna and the base station. Since the radiator 300 is located at different positions in the bar slit 400, the signal gain direction of the antenna in the dial is different. Therefore, in the embodiment of the present application, the conductive plate 200 is rotatably connected to the base 100, and the length of the radiator is smaller than the length of the strip-shaped slot, so that the conductive plate 200 can rotate relative to the base 100, and during the rotation of the conductive plate 200, the relative position between the radiator 300 and the barrier 201 changes, that is, the position of the radiator 300 in the strip-shaped slot 400 changes, so as to adjust the signal gain direction of the antenna in the dial. Therefore, the radiation effect of the antenna in the dial plate can be further improved by adjusting the signal gain direction of the antenna in the dial plate to a better radiation direction.

The above-mentioned conductive plate 200 and the base 100 may be rotationally connected by a common rotational connection manner, for example, a rotational connection may be adopted by a rotational shaft, or one of the conductive plate 200 and the base 100 is provided with a circular groove, and the other is provided with a protrusion adapted to the circular groove, and the rotational connection between the conductive plate 200 and the base 100 may be also realized by embedding the protrusion into the groove.

The length of the radiator 300 is smaller than that of the strip-shaped slit 400, which may be referred to as: in the longitudinal direction of the strip-shaped slit 400, the length of the radiator 300 is smaller than the length of the strip-shaped slit 400, for example, please refer to fig. 1, the radiator 300 is a strip-shaped plate disposed along the longitudinal direction of the strip-shaped slit 400, and in this case, the length of the strip-shaped plate is smaller than the length of the strip-shaped slit 400. Thus, when the conductive plate 200 rotates relative to the base 100, the bar slit 400 rotates relative to the radiator 300, thereby ensuring that the conductive plate 200 can be rotated relative to the base 100. It should be appreciated that the relative position of the radiator 300 and the strip slit 400 is changed during the rotation of the conductive plate 200 with respect to the base 100, thereby achieving the effect of changing the radiation direction of the strip slit 400.

In this embodiment, the conductive plate 200 is rotatably connected to the base 100, so that the signal gain direction of the antenna in the dial can be changed by rotating the conductive plate 200, thereby further improving the radiation effect of the antenna.

Optionally, the dial further includes a control element, where the control element is configured to control the conductive plate 200 to rotate to a target position according to a signal intensity of an antenna in the dial.

The control element may be various chips with information processing function in the watch, for example, a micro control unit (Microcontroller Unit, MCU) may be used.

In addition, the dial may further include a detecting element for detecting the signal intensity of the antenna in the dial and a driving member for controlling the rotation of the conductive plate 200 with respect to the base 100, wherein the driving member may be various motors. The detection element and the driving piece are respectively and electrically connected with the control element.

Specifically, the signal intensity of the antenna in the watch can be detected by the detecting element to determine the current radiation efficiency of the antenna, wherein when the signal intensity is strong, the current radiation efficiency of the antenna can be determined to be high, whereas when the signal intensity is weak, the current radiation efficiency of the antenna can be determined to be low. Specifically, the conductor can be driven to rotate relative to the base 100 by the driving member for one turn, and the signal intensity of the antenna can be detected in real time by the detecting element while the conductor rotates relative to the base 100, so that the position where the radiation efficiency of the antenna is optimal can be determined among the relative positions of the conductor and the base 100, and the radiation efficiency of the antenna can be further improved by rotating the conductor to the position where the radiation efficiency is optimal. The target position may be a position where the radiation efficiency of the antenna is optimal.

Optionally, the feed source 500 is connected with the feed point 301 through a matching circuit 600, where the matching circuit 600 includes N first sub-matching circuits, and N is an integer greater than 1;

the control element is configured to control a first target sub-matching circuit of the N first sub-matching circuits to conduct the feed source 500 and the feed point 301 according to a relative position between the conductor and the base 100;

the first target sub-matching circuit is a first sub-matching circuit with the largest corresponding signal intensity in the N first sub-matching circuits.

Specifically, the correspondence between the relative position of the conductor on the base 100 and the N first sub-matching circuits may be pre-constructed, and at the same time, the relative position between the conductor and the base 100 may also be detected in real time by a position detecting element, where the position detecting element may be a position sensor, and the position detecting element and the matching circuit 600 are electrically connected to the control element respectively. Thus, when the position detecting element detects a change in the relative position between the conductor and the base 100, the control element may control the first target sub-matching circuit in the matching circuit 600 to conduct the feed 500 and the feed point 301.

The matching circuit 600 may be a matching circuit 600 of a scenario, for example, please refer to fig. 3, which is a schematic diagram of a structure of the matching circuit 600 according to an embodiment of the present application, wherein the matching circuit 600 includes a first inductor 601, a first capacitor 602, a second inductor 603, a third inductor 605, a fourth inductor 607, a second capacitor 609, a first switch 604, a second switch 606, and a third switch 608. The feed source 500 is electrically connected with the first end of the first inductor 601, the first end of the first inductor 601 is further grounded through a first capacitor 602, three parallel sub-circuits are arranged between the second end of the first inductor 601 and the feed point 301, and specifically include a first sub-circuit, a second sub-circuit and a third sub-circuit, the first sub-circuit includes a second inductor 603 and a first switch 604 which are connected in series, the second sub-circuit includes a third inductor 605 and a second switch 606 which are connected in series, the third sub-circuit includes a fourth inductor 607 and a third switch 608 which are connected in series, and the second end of the first inductor 601 is further grounded through a second capacitor 609. Thus, by changing the conductive states of the first switch 604, the second switch 606, and the third switch 608, a different first sub-matching circuit can be formed.

In this embodiment, the radiation state of the antenna is correspondingly different due to the different relative positions between the conductor and the base 100. Therefore, the control element can adjust the matching circuit 600 to a state that is most matched with the current state of the conductor based on the relative position between the conductor and the base 100, thereby improving the effect of impedance matching of the antenna.

Optionally, the dial plate further comprises a display screen;

during the relative rotation of the conductive plate 200 and the base 100, the display screen displays the signal intensity value of the antenna in the dial.

Specifically, when the relative position between the conductive plate 200 and the base 100 changes, the signal intensity value of the antenna in the dial can be detected in real time by the detection element, and the detected signal intensity value of the antenna is sent to the display screen for display.

In this embodiment, the current signal intensity value of the antenna can be displayed on the display screen in real time during the rotation of the conductive plate 200 by the manual rotation of the conductive plate 200, so that the user can adjust the conductive plate 200 to the position with the best radiation effect.

Optionally, the base 100 is a plate body with conductive performance, and the base 100 forms a ground plate of the dial;

at least one of the conductive plate 200 and the radiator 300 is disposed to be insulated with respect to the base 100.

Wherein, by insulating at least one of the conductive plate 200 and the radiator 300 with respect to the base 100, it is possible to avoid conduction between the radiator 300 and the conductive plate 200 through the base 100.

In this embodiment, the base 100 is used as the ground plate of the dial, that is, the base 100 is used as the ground end of the dial. In this way, the electric potential of the base 100 is the same as that of the wrist of the user, and in this case, the electric potential of each position of the wristwatch remains unchanged regardless of whether the wristwatch is in a wearing state, so that the influence of the body of the user on the wristwatch can be further reduced.

Optionally, the dial further comprises a display screen, wherein the display screen comprises a non-display area positioned at the edge;

the display screen is located at a side of the conductive plate 200 facing away from the base 100, and is stacked with the conductive plate 200, and the non-display area is disposed opposite to the bar slit 400.

Wherein the non-display area may be a black edge of the display screen.

In this embodiment, the strip-shaped slit 400 is disposed opposite to the non-display area of the display screen, so that the compactness of the dial structure can be effectively improved.

The embodiment of the application also provides a watch, which comprises a dial plate and a watchband, wherein the structure of the dial plate can be described with reference to the embodiment, and the details are not repeated here. The watch provided by the embodiment of the application adopts the structure of the watch disc in the embodiment, so that the watch provided by the embodiment of the application can realize all the beneficial effects of the watch disc in the embodiment.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are to be protected by the present application.

Claims

1. The dial plate is characterized by comprising a base, a conducting plate, a display screen, a radiator and a feed source, wherein the conducting plate is arranged between the base and the display screen, the base, the conducting plate and the display screen are sequentially connected, the base is grounded, and a feed point is arranged on the radiator;

the feed source is electrically connected with the feed point, and the radiator and the strip-shaped slit form a slot antenna;

the conductive plate is in a circular plate shape, the strip-shaped slits are arc-shaped slits arranged along the circumferential direction of the conductive plate, the conductive plate comprises a separation part, the separation part is positioned on the circumference of the strip-shaped slits, and the separation part separates the strip-shaped slits; the conducting plate is rotatably connected with the base, the length of the radiator is smaller than that of the strip-shaped slit, and the baffle part moves towards or back to the radiator on the circumference of the strip-shaped slit in the process of rotating the conducting plate relative to the base.

2. The dial of claim 1, wherein the radiator is disposed along a length of the slot.

3. The dial as claimed in claim 1, further comprising a control element for controlling the rotation of the conductive plate to a target position according to the signal strength of the antenna in the dial.

4. A dial according to claim 3, wherein the feed source and the feed point are connected by a matching circuit, the matching circuit comprising N first sub-matching circuits, N being an integer greater than 1;

the control element is used for controlling a first target sub-matching circuit in the N first sub-matching circuits to conduct the feed source and the feed point according to the relative position between the conductor and the base;

5. The dial of claim 1, wherein the dial further comprises a display screen;

in the process of relative rotation of the conducting plate and the base, the display screen displays the signal intensity value of the antenna in the dial plate.

6. The dial according to claim 1, wherein the base is a plate body having electrical conductivity;

at least one of the conductive plate and the radiator is disposed in insulation with respect to the base.

7. The dial of claim 1, further comprising a display screen, the display screen including a non-display area at an edge;

the display screen is located one side of the conducting plate, which is opposite to the base, and the display screen is arranged in a stacked mode with the conducting plate, and the non-display area is arranged opposite to the strip-shaped seam.

8. A wristwatch comprising a dial according to any one of claims 1-7.