CN108235631A - Electronic device and its glass cover-plate - Google Patents

Abstract

The invention relates to a glass cover, which includes a glass base, a decorative layer and a wireless charging receiving coil. The glass base has opposite inner and outer surfaces, and a groove is provided on one side of the inner surface of the glass base. The decorative layer is disposed on a side of the glass base located on the inner surface, and the wireless charging receiving coil is filled in the groove. The invention also relates to an electronic device having the above-mentioned glass cover. Placing the coil assembly for wireless charging on the glass substrate and forming it as part of the glass cover not only simplifies the structure of the wireless charging module, but also brings the wireless charging receiving coil closer to the external wireless charging transmitting coil. Conducive to improving the efficiency of wireless charging.

Description

Electronic device and its glass cover

technical field

The invention relates to the technical field of electronic devices, in particular to an electronic device with a wireless charging function and a glass cover thereof.

Background technique

The popularity of consumer electronic products such as smart phones has greatly facilitated people's life and work. As these electronic products become more powerful, they consume more and more energy. How to quickly and conveniently replenish electric energy for electronic devices is a problem that needs to be solved urgently. The wireless charging technology enables consumers to charge electronic devices more conveniently due to getting rid of the shackles of wired cables. Therefore, more and more manufacturers pay attention to how to improve the wireless charging technology so as to apply the wireless charging device in these electronic devices.

Contents of the invention

The present invention aims to provide an electronic device with wireless charging function and its glass cover.

A glass cover plate, including a glass substrate, a decorative layer and a wireless charging receiving coil, the glass substrate has opposite inner surfaces and outer surfaces, a groove is provided on one side of the inner surface of the glass substrate, and the decorative The layer is arranged on one side of the inner surface of the glass substrate, and the wireless charging receiving coil is filled in the groove.

In one of the embodiments, the inner surface of the glass substrate includes a first part and a second part, the second part is recessed toward the outer surface to form the groove, and the decorative layer includes a The main body portion on the first part and the extension portion laid on the inner wall of the groove.

In one of the embodiments, it also includes a colloidal layer disposed on the inner surface of the glass substrate, the surface of the colloidal layer away from the glass substrate includes a first part and a second part, and the second part faces The inner surface is depressed to form the groove, and the decoration layer includes a main body portion laid on the first part of the glue layer and an extension portion laid on the inner wall of the groove.

In one of the embodiments, the glue layer is a UV glue layer.

In one of the embodiments, a shielding layer covering the wireless charging receiving coil is also included.

In one of the embodiments, the shielding layer is a ferrite sheet.

In one embodiment, the wireless charging receiving coil has a thickness of 0.25-0.65mm.

In one embodiment, the wireless charging receiving coil is in the shape of a rectangular ring, the inner circle of the wireless charging receiving coil is 21-27mm long and 10-19mm wide; the outer circle is 33-45mm long and 30-35mm wide.

In one embodiment, the wireless charging receiving coil is in the shape of a ring, the diameter of the inner circle of the wireless charging receiving coil is 15-20mm, and the diameter of the outer circle is 35-43mm.

An electronic device, comprising a casing, a glass cover and a battery module, the casing and the glass cover form a cavity for accommodating the battery module, the battery module includes a positive terminal and a negative terminal, the glass The cover plate is any one of the above glass cover plates, one end of the wireless charging receiving coil is electrically connected to the positive terminal, and the other end is electrically connected to the negative terminal.

Setting the coil assembly for wireless charging on the glass substrate to form a part of the glass cover can not only simplify the structure of the wireless charging module, but also make the distance between the wireless charging receiving coil and the external wireless charging transmitting coil closer, It is beneficial to improve the efficiency of wireless charging.

Description of drawings

Fig. 1 is a schematic cross-sectional structure diagram of a glass cover plate provided by an embodiment of the present invention;

Fig. 2 is a schematic structural diagram of a wireless charging receiving coil on a glass cover provided by an embodiment of the present invention;

FIG. 3 is a schematic cross-sectional structure diagram of a glass cover plate provided by another embodiment of the present invention.

Detailed ways

As shown in FIG. 1 , a glass cover provided by an embodiment of the present invention can be applied to a consumer electronic device as a back cover of the electronic device. These electronic devices may be smartphones, tablet computers, and the like.

The glass cover includes a glass substrate 10 , a decorative layer 30 and a wireless charging receiving coil 50 .

The glass substrate 10 has opposing outer surface 101 and inner surface 102 . When the glass cover plate is applied to the electronic device, the inner surface 102 of the glass substrate 10 faces the inside of the electronic device, and the outer surface 101 faces the outside of the electronic device. The glass substrate 10 serves as a carrier for the decoration layer 30 and the wireless charging receiving coil 50 . In one embodiment, at least part of the glass substrate 10 is planar, so as to provide the wireless charging receiving coil 50 . In some other embodiments, the glass substrate 10 as a whole may take on a 3D glass structure, for example, a curved arc is provided at the edge.

The inner surface 102 of the glass substrate 10 includes a first portion 103 and a second portion 104 , the second portion 104 is recessed toward the outer surface 101 to form a groove 105 . In an embodiment, the groove 105 may be formed on the inner surface 102 of the glass substrate 10 by etching.

The decoration layer 30 is disposed on the inner surface 101 of the glass substrate 10 . The decoration layer 30 plays the role of beautifying and decorating the glass substrate 10 . For example, the decorative layer 30 can set the glass base 10 to be non-transparent, so as to block the components and parts in the glass base 10, so that the inner surface 102 side of the glass base 10 cannot be observed on the outer surface 101 side of the glass base 10. components. The decoration layer 30 may also have a certain pattern or pattern, so that the glass substrate 10 presents various ornamental figures. The decoration layer 30 may include at least one ink layer. The ink layer can be in any suitable color. The decoration layer 30 may also include at least one coating layer. The coating layer can present patterns and shapes such as waves, water patterns, and wood grains. When the coating layer and the ink layer are provided at the same time, the coating layer is formed on the inner surface 102 of the glass substrate 10 first, and then the ink layer is formed on the coating layer.

The decoration layer 30 includes a main body portion 31 laid on the first portion 103 of the inner surface 102 and an extension portion 32 laid on the inner wall of the groove 105 . The thickness of the decoration layer 30 is smaller than the depth of the groove 105 , and after the decoration layer 30 is formed on the inner surface 102 , the groove 105 still has a significant depth for setting the wireless charging receiving coil 50 .

The wireless charging receiving coil 50 is filled in the groove 105 . During manufacture, conductive materials such as silver paste, copper paste, etc. can be filled into the groove 105 and then sintered and solidified to obtain the wireless charging receiving coil 50 .

The wireless charging receiving coil 50 is used in conjunction with the external wireless charging transmitting coil, and the principle of electromagnetic induction can be used to induce current through the wireless charging receiving coil 50 and the external wireless charging transmitting coil, thereby charging the battery module in the electronic device. .

As shown in Figure 2, in one embodiment, the wireless charging receiving coil 50 is in the shape of a rectangular ring, the inner circle of the wireless charging receiving coil 50 is 21-27mm long and 10-19mm wide; the outer circle is 33-45mm long and 30mm wide. -35mm. The wireless charging receiving coil 50 has two ends 501 , 502 . The two ends 501, 502 are used to form electrical communication with the positive terminal and the negative terminal of the battery module in the electronic device.

When making the wireless charging receiving coil 50, the end portion 501 and the end portion 502 can be respectively arranged on the outside and inside of the ring of the wireless charging receiving coil 50, and then the connecting section 503 with insulation treatment can be connected across the wireless charging receiving coil 50. The ring-shaped inner end 502 forms a connection with a corresponding terminal of the battery module. For example, the connection section 503 can be a wire with an insulating outer layer. When the glass cover is assembled into the electronic device, one end of the connection section 503 is electrically connected to the end 502, and the other end of the connection section 503 is connected to the battery. Corresponding terminals of the modules form an electrical connection.

In some other embodiments, the wireless charging receiving coil 50 may be in the shape of a ring, the inner diameter of the wireless charging receiving coil 41 is 15-20mm, and the outer diameter is 35-43mm.

Further, it also includes a shielding layer 40 covering the wireless charging receiving coil 50 . The shielding layer 40 can be absolutely arranged on the wireless charging receiving coil 50 in the form of bonding. The shielding layer 40 may be a ferrite sheet. By covering the shielding layer 40 , the influence of various electrical signals in the electronic device on the electromagnetic signal between the wireless charging receiving coil 50 and the external wireless charging transmitting coil can be reduced, and the efficiency of wireless charging can be improved. It can be understood that two openings may be provided on the shielding layer 40 for leading out the two ends 501 , 502 of the wireless charging receiving coil 50 . In some other embodiments, the shielding layer 40 does not need to be provided with openings, and the two ends 501 and 502 of the wireless charging receiving coil 50 are drawn out from the edge of the shielding layer 40 .

In one embodiment, the wireless charging receiving coil 50 has a thickness of 0.25-0.65mm. Arranging the wireless charging receiving coil 50 on the glass substrate 10 to form a part of the glass cover can not only simplify the structure of the wireless charging module, but also make the distance between the wireless charging receiving coil and the external wireless charging transmitting coil closer. It is beneficial to improve the efficiency of wireless charging.

As shown in FIG. 3 , a glass cover provided by another embodiment of the present invention includes a glass substrate 10 , a glue layer 20 , a decoration layer 30 , a shielding layer 40 and a wireless charging receiving coil 50 . Compared with the embodiment shown in FIG. 1, the groove 105 is directly formed on the inner surface 102 of the glass substrate 10. In the embodiment shown in FIG. The glue layer 20 , and a groove for accommodating the wireless charging receiving coil 50 is provided on the glue layer 20 .

Specifically, the surface of the glue layer 20 away from the glass substrate 10 includes a first portion 201 and a second portion 202 , and the second portion 202 is recessed toward the inner surface 102 to form the groove 203 . In one embodiment, the glue layer 20 may be a UV glue layer. The groove 203 can be formed by embossing.

Similarly, the decoration layer 30 includes a main body portion 31 laid on the first portion 201 of the glue layer 20 and an extension portion 32 laid on the inner wall of the groove 203 .

The decoration layer 30 may be a coating layer. The thickness of the decoration layer 30 is smaller than the depth of the groove 203 , and after the decoration layer 30 is formed on the glue layer 20 , the groove 203 still has an obvious depth for setting the wireless charging receiving coil 50 .

When forming the wireless charging receiving coil 50, the groove 203 can be filled with nano-silver ink by scraping coating technology, and then sintered at 150°C, so that the silver in the nano-silver ink is sintered into conductive fine wires to form wireless charging. receiving coil 50 . Among them, the solid content of the silver ink is 35%, and the solvent evaporates during sintering.

Other unmentioned structural features in the embodiment shown in FIG. 3 may be the same as those in the embodiment shown in FIG. 1 , and will not be repeated here.

The present invention also provides an electronic device, including a casing, a glass cover and a battery module, the casing and the glass cover form a cavity for accommodating the battery module, and the battery module includes a positive terminal and a negative terminal .

The glass cover is the glass cover in any one of the above embodiments, one end 501 of the wireless charging receiving coil 50 is electrically connected to the positive terminal of the battery module, and the other end 502 is electrically connected to the negative terminal of the battery module. Electrical conduction. It can be understood that the battery module may also include circuit designs such as a high-frequency oscillation circuit, a high-frequency power amplifier circuit, and a high-frequency rectification and filtering circuit, so that the induced current generated by the wireless charging receiving coil 50 can be used to charge the battery module.

The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, should be considered as within the scope of this specification.

The above-mentioned embodiments only express several implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but should not be construed as limiting the patent scope of the invention. It should be pointed out that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention should be based on the appended claims.

Claims (10)

1. A glass cover, characterized in that it comprises a glass base, a decorative layer and a wireless charging receiving coil, the glass base has opposite inner surfaces and outer surfaces, and one side of the glass base located on the inner surface is provided with a concave The groove, the decorative layer is arranged on one side of the inner surface of the glass substrate, and the wireless charging receiving coil is filled in the groove. 2. The glass cover plate according to claim 1, wherein the inner surface of the glass substrate comprises a first part and a second part, and the second part is recessed toward the outer surface to form the groove, so The decoration layer includes a main body part laid on the first part of the inner surface and an extension part laid on the inner wall of the groove. 3. The glass cover plate according to claim 1, further comprising a colloidal layer disposed on the inner surface of the glass substrate, the surface of the colloidal layer away from the glass substrate comprising a first portion and a The second part is recessed toward the inner surface to form the groove, and the decorative layer includes a main body laid on the first part of the glue layer and a groove laid on the inner wall of the groove. extension. 4. The glass cover plate according to claim 3, characterized in that, the glue layer is a UV glue layer. 5. The glass cover according to claim 1, further comprising a shielding layer covering the wireless charging receiving coil. 6. The glass cover according to claim 5, wherein the shielding layer is a ferrite sheet. 7. The glass cover according to claim 1, wherein the wireless charging receiving coil has a thickness of 0.25-0.65 mm. 8. The glass cover according to claim 1, wherein the wireless charging receiving coil is in a rectangular ring shape, the inner circle of the wireless charging receiving coil is 21-27mm long and 10-19mm wide; the outer circle is long 33-45mm, width 30-35mm. 9. The glass cover plate according to claim 1, characterized in that, the wireless charging receiving coil is circular, the diameter of the inner ring of the wireless charging receiving coil is 15-20 mm, and the diameter of the outer ring is 35-43 mm . 10. An electronic device, comprising a casing, a glass cover and a battery module, the casing and the glass cover forming a cavity for accommodating the battery module, the battery module including a positive terminal and a negative terminal, which It is characterized in that the glass cover plate is the glass cover plate described in any one of claims 1-9, one end of the wireless charging receiving coil is electrically connected to the positive terminal, and the other end is electrically connected to the negative terminal. Pass.