Coil structure and electronic equipment

Abstract

The present disclosure provides a coil structure and electronic device, belonging to the technical field of electronic devices. The coil structure includes a dielectric substrate, a coil portion disposed on the dielectric substrate, and a first pattern. The first pattern extends through at least a portion of the dielectric substrate along the thickness of the dielectric substrate and does not overlap with the coil portion.

Description

Technical Field

[0001] The present disclosure belongs to the technical field of electronic devices, and particularly relates to a coil structure and an electronic device. Background Art

[0002] The substrate where the power receiving coil is located is easily stretched or bent during use, which can easily cause the coil to break. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art and provides a coil structure and an electronic device.

[0004] In a first aspect, an embodiment of the present disclosure provides a coil structure comprising a dielectric substrate, a coil portion disposed on the dielectric substrate, and a first pattern; wherein the first pattern penetrates at least a portion of the dielectric substrate along a thickness direction of the dielectric substrate, and the first pattern does not overlap with the coil portion.

[0005] In some examples, the dielectric substrate includes a first area, a second area, and a third area; the second area surrounds the first area, and the third area surrounds the second area; the coil portion is located in the second area, and the first pattern is present in both the first area and the third area.

[0006] In some examples, adjacent turns of the coil portion define a first sub-region of the second region, and the first pattern is provided in the first sub-region.

[0007] In some examples, the coil portion has a shape of at least one of a square, a hexagon, an octagon, and a circle.

[0008] In some examples, the outline shape of the first pattern is at least one of a straight line, an I-shape, and an arc shape.

[0009] In some examples, the coil structure includes a first pattern having two contour shapes, namely a first shape and a second shape; the first pattern is arranged along the row direction and the column direction of the dielectric substrate in an alternating manner of the first shape and the second shape.

[0010] In some examples, the coil portion is circular in shape; wherein,

[0011] The first pattern includes a plurality of first sub-patterns sequentially arranged in a clockwise direction. The contours of the first sub-patterns are arc-shaped, and the plurality of first sub-patterns share a common center.

[0012] In some examples, there are multiple first patterns, and the first sub-patterns of the first patterns are arranged in a one-to-one correspondence.

[0013] In some examples, the coil structure further includes a light-emitting device; the coil portion has a first connection end and a second connection end, the first connection end is connected to a first electrode of the light-emitting device, and the second connection end is connected to a second electrode of the light-emitting device.

[0014] In some examples, the coil structure further includes an insulating layer and a pixel defining layer sequentially disposed on a side of the coil portion away from the dielectric substrate, and the pixel defining layer has an accommodating portion; the light-emitting device includes a first electrode, a light-emitting layer, and a second electrode; the first electrode is located on a side of the insulating layer away from the coil portion, the light-emitting layer is located on a side of the first electrode away from the insulating layer and at least within the accommodating portion of the pixel defining layer, and the second electrode is located on a side of the light-emitting layer away from the first electrode;

[0015] The first connection end is connected to the first electrode through a first via hole, and the second connection end is connected to the second electrode through a second via hole; wherein the first via hole passes through the insulating layer, and the second via hole passes through the insulating layer and the pixel defining layer.

[0016] In some examples, the first pattern penetrates the dielectric substrate along a thickness direction of the dielectric substrate.

[0017] In some examples, the coil structure is a near field communication antenna or a charging coil.

[0018] In a second aspect, an embodiment of the present disclosure further provides an electronic device, which includes the above-mentioned coil structure and a functional device located on the coil structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of a coil structure provided in an embodiment of the present disclosure;

[0020] Figure 2a for Figure 1 Schematic diagram of the dielectric substrate area;

[0021] Figure 2b is a schematic diagram of an exemplary dielectric substrate area;

[0022] Figure 3 A schematic diagram of another coil structure provided in an embodiment of the present disclosure;

[0023] Figure 4 A schematic diagram of another coil structure provided in an embodiment of the present disclosure;

[0024] Figure 5 A schematic diagram of another coil structure provided in an embodiment of the present disclosure;

[0025] Figure 6 A schematic diagram of another coil structure provided in an embodiment of the present disclosure;

[0026] Figure 7 A schematic diagram of another coil structure provided in an embodiment of the present disclosure;

[0027] Figure 8 Schematic diagram of a light-emitting device in an embodiment of the present disclosure.

[0028] The reference numerals in the figures are: dielectric substrate 01; coil portion 10; first pattern 20; first sub-pattern 201; first region Q1; second region Q2; third region Q3; light-emitting device 30; first connection end 101; second connection end 102; first electrode 03; second electrode 04; insulating layer 02; pixel defining layer PDL; light-emitting layer EL; encapsulation layer 05. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of the embodiments. The components of the embodiments of the present disclosure generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present disclosure provided in the drawings is not intended to limit the scope of the disclosure for which protection is sought, but merely represents selected embodiments of the present disclosure. Based on the embodiments of the present disclosure, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present disclosure.

[0030] Unless otherwise defined, the technical or scientific terms used in this disclosure should have the usual meanings understood by people with ordinary skills in the field to which this disclosure belongs. The words "first", "second" and similar words used in this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one", "an" or "the" do not indicate a quantity limitation, but rather indicate the existence of at least one. Words such as "include" or "comprise" mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0031] In this disclosure, "multiple or several" refers to two or more. "And / or" describes the relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can mean: A exists alone, A and B exist simultaneously, or B exists alone. The character " / " generally indicates that the associated objects are in an "or" relationship.

[0032] The receiving coil in the current magnetic induction coil is prone to deformation and thus breakage, affecting its function.

[0033] In view of this, a coil structure and an electronic device are provided in an embodiment of the present disclosure.

[0034] First, embodiments of the present disclosure provide a coil structure. By providing a first pattern 20 on a dielectric substrate 01, the first pattern 20 enhances the dielectric substrate 01's deformability and stretchability. This prevents the coil structure from breaking even when subjected to certain bending or stretching during use, thereby improving the reliability of the coil. Furthermore, this application is also applicable to applications requiring a special-shaped dielectric substrate 01.

[0035] Specifically, Figure 1 A schematic diagram of a coil structure provided in an embodiment of the present disclosure is shown in FIG. Figure 1 As shown, the coil structure includes a dielectric substrate 01, a coil portion 10 disposed on the dielectric substrate 01, and a first pattern 20. The first pattern 20 extends through at least a portion of the dielectric substrate 01 along the thickness direction of the dielectric substrate 01, and the first pattern 20 does not overlap with the coil portion 10. In other words, the first pattern 20 can be a blind slot that partially extends through the dielectric substrate 01, or a through slot that completely extends through the dielectric substrate 01. In the embodiments disclosed herein, the first pattern 20 is described as a through slot that completely extends through the dielectric substrate 01.

[0036] The dielectric substrate 01 can be a flexible substrate to facilitate forming the first pattern 20 . The coil portion 10 includes a coil for receiving power to implement communication and charging functions. The material of the coil portion 10 includes, but is not limited to, metal materials such as copper and aluminum. Preferably, the coil portion 10 is made of copper to achieve better electrical performance and a stronger magnetic field.

[0037] Figure 1The figure only illustrates that there is one coil part 10 of the coil structure, and the shape of the coil part 10 is square. Of course, it is understandable that there can be multiple coil parts 10, that is, the number of coil parts 10 depends on actual needs. The first pattern 20 can have a variety of contour shapes, and the first patterns 20 with a variety of contour shapes can be obtained by rotating a certain angle; here, the first pattern 20 has two contour shapes, and the contour of one first pattern 20 is obtained by rotating the contour of the other first pattern 20 by 90°, for example: the contour of one first pattern 20 is "one", and the contour of the other first pattern 20 is "1". The first pattern 20 is arranged along the row and column directions of the dielectric substrate 01 in an alternating manner of the above two shapes. The first patterns 20 are arranged around the coil portion 10 and within the square area enclosed by the coil portion 10. This arrangement ensures that the first patterns 20 are evenly distributed around and within the coil portion 10. When the coil structure is subjected to tension, the first patterns 20 provided on the dielectric substrate 01 evenly disperse the stress within the dielectric substrate 01. This prevents wire breakage caused by sudden stress changes at a specific location, thereby protecting the coil portion 10 and ensuring the electrical performance of the coil structure.

[0038] The first pattern 20 penetrates at least a portion of the dielectric substrate 01 along the thickness direction of the dielectric substrate 01, that is, the first pattern 20 may partially penetrate the dielectric substrate 01 or completely penetrate the dielectric substrate 01. Of course, it is understandable that when Figure 1 When the first pattern 20 completely penetrates the dielectric substrate 01, the dielectric substrate 01 can be stretched relatively widely. When the first pattern 20 partially penetrates the dielectric substrate 01, the dielectric substrate 01 can be stretched relatively less widely. The first pattern 20 does not overlap with the coil portion 10. In other words, the first pattern 20 should be formed away from the coil portion 10 to avoid adversely affecting the electrical performance of the coil portion 10.

[0039] In some examples, Figure 2a for Figure 1 Schematic diagram of the dielectric substrate area, such as Figure 1 and Figure 2a As shown, dielectric substrate 01 includes a first region Q1, a second region Q2, and a third region Q3. Second region Q2 surrounds first region Q1, and third region Q3 surrounds second region Q2. Coil portion 10 is located in second region Q2, and both first region Q1 and third region Q3 have first patterns 20. The area where coil portion 10 is located is second region Q2, while the areas surrounding coil portion 10 and the areas enclosed by coil portion 10 are third region Q3 and first region Q1, respectively. Both first region Q1 and third region Q3 have first patterns 20.

[0040] It should be noted that when there are multiple coil sections 10, the number of first region Q1, second region Q2, and third region Q3 is not all one. The number of coil sections 10 determines the number of second regions Q2 and first regions Q1, and one second region Q2 surrounds one first region Q1. Figure 2b is a schematic diagram of an exemplary dielectric substrate area, such as Figure 2b As shown, there are two coil portions 10, namely a first coil portion 10 (not shown) and a second coil portion 10 (not shown). The area where the first coil portion 10 is located is the second area Q2, and the area surrounded by the first coil portion 10 is the first area Q1. The area where the second coil portion 10 is located is the second area Q2, and the area surrounded by the second coil portion 10 is the first area Q1. That is, there are two first areas Q1 and two second areas Q2 on the dielectric substrate 01, and all other areas are the third area Q3.

[0041] Preferably, the second region Q2 where the coil portion 10 is located is the central region of the dielectric substrate 01. This arrangement can further evenly disperse the stress of the dielectric substrate 01. When the stress is released, the dielectric substrate 01 is less likely to warp, deform, or crack at the location where the stress remains.

[0042] Of course, it is understandable that the first pattern 20 can be provided only in the first region Q1 or the third region Q3 . The difference lies in the different stretching amounts of the dielectric substrate 01 that is ultimately formed.

[0043] In some examples, Figure 3 Another coil structure diagram provided in the embodiment of the present disclosure is as follows: Figure 3 As shown, in this coil structure, the area where the coil portion 10 is located is the second area Q2. Adjacent turns of the coil portion 10 define a first sub-area of ​​the second area Q2. First patterns 20 are provided in the first sub-area, the first area Q1, and the third area Q3. Providing the first patterns 20 maximizes the use of space within the dielectric substrate 01, resulting in a dielectric substrate 01 with greater stretchability.

[0044] Specifically, such as Figure 3As shown, the shape of the coil part 10 of the coil structure is an octagon, and each turn of the coil is wound in an octagon shape. For any two turns of the coil, the turn farther from the geometric center of the coil part 10 completely encloses the other turn; a first sub-region of the second region Q2 is defined between adjacent turns of the coil part 10, and a first pattern 20 is provided in the first sub-region, the first region Q1, and the third region Q3. In the first region Q1 and the third region Q3, the first pattern 20 has two contour shapes, and the contour of one first pattern 20 is obtained by rotating the contour of the other first pattern 20 by 90°. For example: the contour of one first pattern 20 is "one", and the contour of the other first pattern 20 is "1". The first pattern 20 is arranged in an alternating manner of the above two shapes along the row direction and the column direction of the dielectric substrate 01; in the first sub-region, the first pattern 20 has various contour shapes because the distance between adjacent turns of the coil part 10 is small. Therefore, within the first sub-region of the second region Q2 defined between adjacent turns of the coil part 10, the contour shape of the first pattern 20 is parallel to the parallel region defined between adjacent turns, and this setting can avoid the coil part 10 when forming the first pattern 20, avoiding adverse effects on the electrical performance of the coil part 10.

[0045] Preferably, the intervals between adjacent turns of the coil part 10 are equal. This setting can make the coil part 10受力均匀 when the coil structure is subjected to tension, and the wire breakage caused by the sudden change of stress at a certain position will not occur, thus playing a role in protecting the coil part 10 and further ensuring the electrical performance of the coil structure.

[0046] It should be noted that when the first pattern 20 is provided in the first sub-region, the contour shape of the first pattern 20 is adapted to the shape of the first sub-region of the second region Q2 defined between adjacent turns of the coil part 10. For example, when the shape of the coil part 10 of the coil structure is square, the first pattern 20 can be as Figure 1 shown, having two contour shapes, and the contour of one first pattern 20 is obtained by rotating the contour of the other first pattern 20 by 90°. For example: the contour of one first pattern 20 is "one", and the contour of the other first pattern 20 is "1". The first pattern 20 is arranged parallel to the row direction and the column direction of the dielectric substrate 01 in the above two shapes.

[0047] In some examples, the shape of the coil part is at least one of square, hexagon, octagon, and circle. Figure 4 Another schematic diagram of the coil structure provided by the embodiment of the present disclosure; as Figure 1 、 3 and 4 shown, the shapes of the coil part 10 are square, octagon, and circle respectively.

[0048] Specifically, in Figure 1 each turn of the coil is wound in a square shape; in Figure 3 In [specific context], each turn of the coil is wound in an octagonal shape; in Figure 4 In [another context], each turn of the coil is wound in a circular shape. In the present disclosure, the shape of the coil portion 10 is not limited, and it can be any one of various geometric shapes such as square, hexagon (not shown in the figure), octagon, circle, etc. That is, the number of coil portions 10 is one, or it can be any combination of the above shapes, that is, the number of coil portions 10 is multiple. It can also be any one of the above shapes, but the number of coil portions 10 is multiple, that is, multiple coil portions 10 have the same shape.

[0049] It can be understood that any of the above coil portions 10 and their deformations or combinations should aim to enhance the anti-deformation ability of the coil structure.

[0050] Preferably, the shape of the coil portion 10 is a centrally symmetric figure, such as a rectangle, a regular polygon, etc. With this setting, when the coil structure is subjected to tensile force, the internal stress in the dielectric substrate 01 can be evenly dispersed, and at the same time, there will be no wire breakage caused by a sudden change in stress at a certain position, thus playing a role in protecting the coil portion 10 and further ensuring the electrical performance of the coil structure.

[0051] In some examples, Figure 5 is another schematic diagram of the coil structure provided by an embodiment of the present disclosure; Figure 6 is another schematic diagram of the coil structure provided by an embodiment of the present disclosure, as shown in Figure 1 、 6 and 5, the contour shapes of the first pattern 20 are respectively a straight line shape, an I-shaped shape, and an arc shape.

[0052] Specifically, in the present disclosure, the contour shape of the first pattern 20 is not limited. For example, the contour shape of the first pattern 20 can be a straight line shape as shown in Figure 1 , the contour shape of the first pattern 20 can also be an I-shaped shape as shown in Figure 6 , and the contour shape of the first pattern 20 can also be an arc shape as shown in Figure 5 ; the contour shape of the first pattern 20 can be any one of various geometric shapes such as a straight line shape, an I-shaped shape, and an arc shape. That is, the contour shape of the first pattern 20 is only one kind, or it can be any combination of the above shapes, that is, the contour shape of the first pattern 20 has multiple kinds. It can also be any one of the above shapes, but this kind of contour shape can form different shapes through methods such as rotating a certain degree. For example, as shown in Figure 1 , in this kind of coil structure, the contour shape of the first pattern 20 is actually a straight line shape, but this kind of contour shape can be rotated clockwise / counterclockwise by ninety degrees, and finally a first pattern 20 with two contour shapes, namely "one" and "1", can be obtained.

[0053] It is understandable that the contour shape of any of the above-mentioned first patterns 20 and its deformation or combination should be aimed at enhancing the anti-deformation ability of the coil structure.

[0054] Preferably, the first pattern 20 has a centrally symmetrical outline. This configuration evenly distributes stress within the dielectric substrate 01 when the coil structure is subjected to tension, preventing wire breakage caused by sudden stress changes at a specific location. This protects the coil portion 10 and ensures the electrical performance of the coil structure.

[0055] In some examples, such as Figure 1 and Figure 6 As shown, the coil structure includes a first pattern 20 having two contour shapes, namely a first shape and a second shape; the first pattern 20 is arranged along the row direction and the column direction of the dielectric substrate 01 in an alternating manner of the first shape and the second shape.

[0056] Specifically, such as Figure 1 As shown, the outline shape of the first pattern 20 is actually a straight line, but this outline shape can be rotated 90 degrees clockwise / counterclockwise to finally obtain a first pattern 20 with two outline shapes, namely a first shape "1" and a second shape "1", and the first pattern 20 is arranged in the row direction and column direction of the dielectric substrate 01 in an alternating manner of the above two shapes; similarly, as shown in FIG. Figure 6 As shown, the outline shape of the first pattern 20 is actually an I-shape, but this outline shape can be rotated 90 degrees clockwise or counterclockwise to ultimately obtain the first pattern 20 with two outline shapes, namely a first shape "I" and a second shape "H". The first pattern 20 is arranged in the row direction and column direction of the dielectric substrate 01 in an alternating manner of the above two shapes.

[0057] In some examples, such as Figure 5 As shown, in this coil structure, the shape of the coil portion 10 is circular; wherein the first pattern 20 includes a plurality of first sub-patterns 201 arranged in a clockwise order, the contour of the first sub-pattern 201 is an arc shape, and the plurality of first sub-patterns 201 share a common center. Figure 5 As shown, each turn of the coil portion 10 is wound in a circular shape, and a plurality of first sub-patterns 201 with arc-shaped outlines together form a first pattern 20 , and the first pattern 20 is circular.

[0058] In some examples, there are multiple first patterns 20, and the first sub-patterns 201 of each first pattern 20 are arranged in a one-to-one correspondence. For example, each first pattern 20 contains the same number of first sub-patterns 201; the first sub-patterns 201 of each first pattern 20 are divided into multiple groups arranged sequentially along the circumference of the outline of any first pattern 20. Within each group of first sub-patterns 201, the first sub-patterns 201 of different first patterns 20 are arranged sequentially along the radial direction of the outline of any first pattern 20. This arrangement allows the first patterns 20 to evenly absorb tension when the coil structure is subjected to tension, while simplifying fabrication and reducing process costs.

[0059] Specifically, such as Figure 5 As shown, in the first region Q1 of the dielectric substrate 01, each first pattern 20 has four first sub-patterns 201, each of which has an arc-shaped outline. In the third region Q3 of the dielectric substrate 01, each first pattern 20 has eight first sub-patterns 201. In the first region Q1 of the dielectric substrate 01, the first sub-patterns 201 of the four first patterns 20 are divided into four groups arranged sequentially along the circumference of the outline of any first pattern 20. In each group of first sub-patterns 201, the first sub-patterns 201 of different first patterns 20 are arranged sequentially along the radial direction of the outline of any first pattern 20. In the third region Q3 of the dielectric substrate 01, the first sub-patterns 201 of the three first patterns 20 are divided into eight groups arranged sequentially along the circumference of the outline of any first pattern 20. In each group of first sub-patterns 201, the first sub-patterns 201 of different first patterns 20 are arranged sequentially along the radial direction of the outline of any first pattern 20. It is understood that the arc lengths of the first sub-patterns 201 can be equal or unequal.

[0060] Preferably, the arc lengths of the first sub-patterns 201 are equal. With this arrangement, when the coil structure is subjected to tension, the internal stress of the dielectric substrate 01 can be evenly dispersed by the first pattern 20 .

[0061] Multiple first patterns 20, with increasing radius, are nested sequentially on dielectric substrate 01 and are co-centered with coil portion 10. This arrangement evenly distributes stress within dielectric substrate 01 and prevents wire breakage caused by sudden stress changes at a specific location, thereby protecting coil portion 10 and ensuring the electrical performance of the coil structure.

[0062] Preferably, when the radii of the plurality of first patterns 20 are nested sequentially on the dielectric substrate 01 from small to large, the spacing between two adjacent first patterns 20 is equal, thereby further ensuring that the dielectric substrate 01 is subjected to uniform force.

[0063] In some examples, Figure 7 Another coil structure diagram provided in the embodiment of the present disclosure is as follows: Figure 7 As shown, the coil structure also includes a light-emitting device 30; the coil portion 10 has a first connection end 101 and a second connection end 102, the first connection end 101 is connected to the first electrode 03 of the light-emitting device 30, and the second connection end 102 is connected to the second electrode 04 of the light-emitting device 30; it should be noted that the embodiment of the present disclosure is described by taking the first electrode 03 as the anode of the light-emitting device 30 and the second electrode 04 as the cathode of the light-emitting device 30 as an example, which will not be repeated below.

[0064] According to Faraday's law of electromagnetic induction, a time-varying magnetic field passing through a closed space generates an induced electromotive force. Therefore, when the coil structure of the present disclosure is placed in a time-varying magnetic field, the magnetic field couples to the coil portion 10 of the coil structure of the present disclosure, generating voltage energy within the coil portion 10. This not only achieves its electrical properties and transmits energy and signals, but also illuminates the light-emitting device 30.

[0065] Specifically, the light emitting device 30 in the coil structure can serve as a reminder. When the coil structure of the present disclosure is powered on and working, the light emitting device 30 is lit at the same time, which can remind the user that the coil structure is working properly.

[0066] It should be noted that the light emitting device 30 disclosed herein includes but is not limited to an organic electroluminescence display (OLED) device, as long as it can serve as a prompt.

[0067] In some examples, Figure 8 is a schematic diagram of a light emitting device in an embodiment of the present disclosure, such as Figure 7 and Figure 8 As shown, the coil structure also includes an insulating layer 02 and a pixel defining layer PDL, which are sequentially arranged on the side of the coil portion 10 away from the dielectric substrate 01, and the pixel defining layer PDL has an accommodating portion; wherein the insulating layer 02 is provided to separate the light-emitting device 30 from the coil portion 10, thereby ensuring that the functions of both are not affected; the light-emitting device 30 includes a first electrode 03, a light-emitting layer EL and a second electrode 04; the first electrode 03 is located on the side of the insulating layer 02 away from the coil portion 10, the light-emitting layer EL is located on the side of the first electrode 03 away from the insulating layer 02, and is at least located in the accommodating portion of the pixel defining layer PDL, and the second electrode 04 is located on the side of the light-emitting layer EL away from the first electrode 03; the first connecting end 101 is connected to the first electrode 03 through a first via hole (not shown in the figure), and the second connecting end 102 is connected to the second electrode 04 through a second via hole (not shown in the figure); wherein the first via hole penetrates the insulating layer 02, and the second via hole penetrates the insulating layer 02 and the pixel defining layer PDL.

[0068] The light emitting device 30 also includes an encapsulation layer 05. Encapsulating the light emitting device 30 through the encapsulation layer 05 can effectively block water and oxygen corrosion, thereby avoiding the situation where the light emitting layer EL fails and the light emitting device 30 cannot achieve the prompt function, thereby extending the service life of the light emitting device 30.

[0069] Any coil structure disclosed herein may include a light emitting device 30, and the present disclosure does not limit the position and quantity of the light emitting device 30. Figure 8 The coil structure with the light emitting device 30 shown in FIG is taken as an example for description.

[0070] Specifically, the pixel defining layer PDL has an accommodating portion to form the light-emitting layer EL, and ensures that the light-emitting layer EL can be connected to the first electrode 03 through the accommodating portion; the first via hole penetrates the insulating layer 02, so that the first connection end 101 of the coil portion 10 is connected to the first electrode 03 through the first via hole, and the second via hole penetrates the insulating layer 02 and the pixel defining layer PDL, so that the second connection end 102 of the coil portion 10 is connected to the second electrode 04 through the second via hole, so that the light-emitting device 30 and the coil portion 10 form a complete circuit. When the coil portion 10 is in a time-varying magnetic field to generate an induced electromotive force, the light-emitting device 30 can be lit when the voltage difference in the coil portion 10 reaches the start-up voltage of the light-emitting device 30, thereby realizing the prompt function of the light-emitting device 30, that is, the role of an indicator light.

[0071] Preferably, the light-emitting device 30 in the embodiment of the present disclosure is an OLED display device. Since the OLED display device has the characteristics of self-luminescence, high brightness, high contrast, low operating voltage, and can be made into flexible displays, it is more suitable for the coil structure of the present disclosure.

[0072] In some examples, the first pattern 20 penetrates the dielectric substrate 01 along the thickness direction of the dielectric substrate 01. When the coil structure provided in the embodiments of the present disclosure includes the light-emitting device 30, the dielectric substrate 01 coil structure further includes an insulating layer 02 disposed on a side of the coil portion 10 away from the dielectric substrate 01. The first pattern 20 completely penetrates the dielectric substrate 01 along the thickness direction of the dielectric substrate 01 and also penetrates the insulating layer 02.

[0073] The first pattern 20 completely penetrates the dielectric substrate 01 along its thickness, as well as the insulating layer 02, allowing the dielectric substrate 01 to achieve greater stretchability. When the coil structure is subjected to tension, the stress within the dielectric substrate 01 is evenly distributed, preventing wire breakage caused by sudden stress changes at a specific location. This protects the coil 10 and ensures the electrical performance of the coil structure.

[0074] In some examples, the coil structure is a near field communication (NFC) antenna or a charging coil. When the coil structure is an NFC antenna, the coil structure can be regarded as a coupled coil. According to Ampere's law, when current flows through a section of wire, a magnetic field is generated around the conductor, and the magnetic field induction intensity is proportional to the number of coil turns and the coil area, and decays with the cube of the distance. According to Faraday's law of electromagnetic induction, a time-varying magnetic field passing through a closed space will generate an induced electromotive force. Therefore, these two laws are applied to NFC readers and NFC cards respectively. The magnetic field generated by the NFC reader antenna is coupled to the NFC card antenna to generate voltage energy, thereby activating the chip in the NFC card, thereby transmitting energy and signals.

[0075] When the coil structure is a charging coil, it can be primarily used in wireless charging. The principle of electromagnetic induction wireless charging is similar to that of a transformer. Coils installed on the charging base and receiving device, respectively, transfer energy using the generated magnetic field. When a sinusoidal alternating current is applied to the transmitting coil on the charging base, it induces a current in the adjacent receiving coil, ultimately charging the mobile phone battery. Of course, it is understandable that when the coil structure is a charging coil, it can be applied not only to consumer electronics but also to a wide range of other fields, such as smart home systems and industrial systems.

[0076] In a second aspect, embodiments of the present disclosure further provide an electronic device comprising the aforementioned coil structure and a functional device located on the coil structure. The electronic device provided by embodiments of the present disclosure may include a liquid crystal display panel, i.e., a liquid crystal display (LCD) panel, or an OLED display panel, which may be a flexible display. The electronic devices provided by embodiments of the present disclosure include, but are not limited to, mobile phones, electronic bracelets, electronic watches, tablet computers, in-vehicle devices, augmented reality (AR) devices, virtual reality (VR) devices, and the like.

[0077] It will be understood that the above embodiments are merely exemplary embodiments for illustrating the principles of the present invention, and the present invention is not limited thereto. Those skilled in the art will appreciate that various modifications and improvements can be made without departing from the spirit and substance of the present invention, and such modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A coil structure comprising a dielectric substrate, a coil portion disposed on the dielectric substrate, and a first pattern; wherein: The first pattern penetrates at least a portion of the dielectric substrate along the thickness direction of the dielectric substrate, and the first pattern does not overlap with the coil portion; the coil portion is circular in shape; the first pattern includes a plurality of first sub-patterns arranged in sequence along a clockwise direction, the first sub-patterns have arc-shaped outlines, and the plurality of first sub-patterns share a common center; there are a plurality of first patterns, and the first sub-patterns of the first patterns are arranged in a one-to-one correspondence; The dielectric substrate includes a first area and a second area surrounding the first area, the coil portion is located in the second area, and has the first pattern in the first area; A first sub-region of the second region is defined between adjacent turns of the coil portion, and the first pattern is provided in the first sub-region.

2. The coil structure according to claim 1, wherein: The dielectric substrate further includes a third area surrounding the second area, and the first pattern is located in the third area.

3. The coil structure according to claim 1 or 2, wherein: The coil structure further includes a light emitting device; the coil portion has a first connection end and a second connection end, the first connection end is connected to a first electrode of the light emitting device, and the second connection end is connected to a second electrode of the light emitting device.

4. The coil structure according to claim 3, wherein: The coil structure further includes an insulating layer and a pixel defining layer sequentially arranged on a side of the coil portion away from the dielectric substrate, and the pixel defining layer has a receiving portion; the light-emitting device includes a first electrode, a light-emitting layer, and a second electrode; the first electrode is located on a side of the insulating layer away from the coil portion, the light-emitting layer is located on a side of the first electrode away from the insulating layer and is at least located within the receiving portion of the pixel defining layer, and the second electrode is located on a side of the light-emitting layer away from the first electrode; The first connection end is connected to the first electrode through a first via hole, and the second connection end is connected to the second electrode through a second via hole; wherein the first via hole passes through the insulating layer, and the second via hole passes through the insulating layer and the pixel defining layer.

5. The coil structure according to claim 4, wherein: The first pattern penetrates the dielectric substrate along a thickness direction of the dielectric substrate. The coil structure according to claim 1 , wherein: The coil structure is a near field communication antenna or a charging coil.

7. An electronic device, wherein: The electronic device comprises the coil structure according to any one of claims 1 to 6, and a functional device located on the coil structure.

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