CN109921476B - Wireless charging device - Google Patents
Wireless charging device Download PDFInfo
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- CN109921476B CN109921476B CN201711319392.8A CN201711319392A CN109921476B CN 109921476 B CN109921476 B CN 109921476B CN 201711319392 A CN201711319392 A CN 201711319392A CN 109921476 B CN109921476 B CN 109921476B
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Abstract
The invention relates to the field of electronic products, in particular to a wireless charging device. The wireless charging device comprises a display panel, a processor, a battery and a charging circuit. The battery is respectively connected with the display panel and the processor and is used for providing the power required by the wireless charging device. The processor is connected with the display panel. The display panel includes a touch sensor and a plurality of coils. The touch sensor includes a plurality of metal grids. The multiple metal grids are used for detecting touch operation, and the processor is used for processing the touch operation. The plurality of coils are arranged among the plurality of metal grids and generate induction current in response to a magnetic field generated by the wireless charging power supply. The charging circuit is connected with the plurality of coils and the battery and is used for collecting the induction current generated by the plurality of coils and charging the battery by using the induction current. The problem that the appearance of the wireless charging device is damaged due to the fact that the metal shell is required to be grooved when the metal shell is designed is solved.
Description
Technical Field
The invention relates to the field of electronic products, in particular to a wireless charging device.
Background
In the design of the existing wireless charging device, a magnetic field generated by a wireless charging power supply needs to pass through a rear cover of the wireless charging device, and then an induction coil of the wireless charging device generates current to charge. Since the metal case has a shielding effect on electromagnetic waves, the metal case is often avoided and a plastic case is used in the design of the rear cover of the wireless charging device. But the wireless charging device who has lid behind the plastic can not bring the experience effect for user's metallic feeling. In addition, in order to improve the charging performance of the wireless charging device and reduce the influence of the metal shell on the charging performance, some wireless charging devices with metal back covers are often provided with grooves on the metal back covers. However, the slotted metal housing detracts from the overall appearance of the device.
Disclosure of Invention
In view of the above, it is necessary to provide a wireless charging device to make the device have a metal texture and solve the problem that slotting on a metal back cover damages the appearance of the device.
A wireless charging device comprises a display panel, a processor and a battery, wherein the battery is respectively connected with the display panel and the processor and used for providing electric power required by the wireless charging device, the processor is connected with the display panel, the display panel comprises a touch sensor and a plurality of coils, the touch sensor comprises a plurality of metal grids which are used for detecting touch operation, the processor is used for processing the touch operation, the coils are arranged among the metal grids and respond to a magnetic field generated by a wireless charging power supply to generate induction current, the wireless charging device further comprises a charging circuit, and the charging circuit is connected with the coils and the battery and used for collecting the induction current generated by the coils and charging the battery by using the induction current.
Preferably, the plurality of coils are wound by photolithography and etching process.
Preferably, the plurality of metal grids include a plurality of first metal grids and a plurality of second metal grids, the plurality of first metal grids extend along a first direction to form a first metal grid layer, the plurality of second metal grids extend along a second direction to form a second metal grid layer, the first direction is perpendicular to the second direction, the plurality of coils are arranged in the first metal grid layer and are staggered with the plurality of first metal grids along the second direction, and the second metal grid layer is arranged between the first metal grid layer and the battery.
Preferably, the wireless charging device further comprises a middle frame and a rear cover, the display panel, the middle frame, the battery and the rear cover are sequentially and respectively arranged along a third direction, and the third direction is perpendicular to the first direction and the second direction.
Preferably, the wireless charging device is placed above the wireless charging power source in a downward posture of the display panel during charging, and the third direction is a downward-upward direction.
Preferably, the display panel is a liquid crystal display panel or an organic light emitting diode display panel.
Preferably, the rear cover is a metal housing.
Preferably, each of the coils is bent into a non-intersecting fence-like structure.
Preferably, the material of the plurality of coils is a metal or a conductive metal oxide.
Preferably, this wireless charging device is smart mobile phone, wearable equipment or panel computer.
In the present embodiment, the coil is disposed in the display panel, and the coil receives the magnetic field from the wireless charging power source to generate an induced current, which can be used to charge the battery. Therefore, the wireless charging device solves the problem that the metal shell is avoided in the design of the wireless charging device, and also solves the problem that the metal shell is required to be grooved when the design of the metal shell is adopted, so that the appearance of the wireless charging device is damaged.
Drawings
Fig. 1 is a diagram of an application environment of a wireless charging device according to an embodiment of the invention.
Fig. 2 is a schematic diagram of a wireless charging device according to an embodiment of the invention.
Fig. 3 is a functional block diagram of a wireless charging device according to an embodiment of the invention.
FIG. 4 is a functional block diagram of a display panel according to an embodiment of the present invention
Fig. 5a-5b are partial structural diagrams of a wireless charging device according to an embodiment of the invention.
Description of the main elements
The following detailed description will further illustrate the invention in conjunction with the above-described figures.
Detailed Description
Referring to fig. 1, an application environment of a wireless charging apparatus 1 according to an embodiment of the invention is shown. The wireless charging device 1 is capable of receiving the magnetic field emitted by the wireless charging power supply 2 and generating an induction current according to the magnetic field to charge the wireless charging device 1. The wireless charging device 1 may be a mobile electronic device such as a smart phone, a wearable device, or a tablet computer.
Referring to fig. 2 and fig. 3, the wireless charging device 1 includes a display panel 11, a middle frame 12, a battery 13, a processor 14, a charging circuit 15, and a rear cover 16. Fig. 2 shows that the wireless charging device 1 is placed above the wireless charging power supply 2 in a posture that the display panel 11 faces downward when charging. In the present embodiment, the display panel 11, the middle frame 12, the battery 13, the processor 14 and the charging circuit 15 are respectively accommodated in a housing (not shown) of the wireless charging device 1, and the rear cover 16 is a part of the housing. In the present embodiment, the rear cover 16 is a metal case. The middle frame 12 is made of metal and is used for supporting and fixing the display panel 11. In this embodiment, the middle frame 12 is also used to shield electromagnetic interference inside the wireless charging device 1 and increase the structural strength of the wireless charging device 1.
In this embodiment, the display panel 11 and the battery 13 are electrically connected to the processor 14. The battery 13 is connected to the display panel 11, the processor 14 and the charging circuit 15. The battery 13 is used for supplying power to the display panel 11 and the processor 14 to provide the power required by the wireless charging device 1, and receiving the power transmitted by the wireless charging power supply 2 through the charging circuit 15 and storing the power.
Referring to fig. 4, a functional block diagram of a display panel according to an embodiment of the invention is shown. The display panel 11 includes a touch sensor 112 and a plurality of coils 114. The touch sensor 112 includes a plurality of metal grids 113. The metal grids 113 are used for detecting a touch operation, and the processor 14 is used for processing the touch operation. The plurality of coils 114 are disposed between the plurality of metal meshes 113. In the present embodiment, the plurality of coils 114 can generate an induction current in response to the magnetic field generated by the wireless charging power supply 2. The charging circuit 15 is connected to the plurality of coils 114 and the battery 13. The charging circuit 15 collects the induced current and charges the battery 13 using the induced current. In this embodiment, the Display Panel 11 may be a Liquid Crystal Display Panel (LCD Panel) or an Organic Light Emitting Diode Display Panel (OLED Display Panel), but is not limited thereto.
Fig. 5a and fig. 5b are schematic views of a partial structure of a wireless charging device 1 according to an embodiment of the present invention. The plurality of metal grids 113 includes a plurality of first metal grids 1132 and a plurality of second metal grids 1133. The plurality of first metal meshes 1132 extend in a first direction to form a first metal mesh layer 1134. The plurality of second metal grids 1133 extend along the second direction to form a second metal grid layer 1135. In this embodiment, the first direction and the second direction are perpendicular to each other. The second metal mesh layer 1135 is disposed between the first metal mesh layer 1134 and the battery 13. The plurality of coils 114 are disposed in the first metal mesh layer 1134 and are staggered with the plurality of first metal meshes 1132 along the second direction.
Specifically, the plurality of first metal grids 1132 are sequentially arranged at intervals to form the first metal grid layer 1134. In an embodiment, an accommodating space 1136 is formed between two adjacent first metal grids 1132, and the plurality of coils 114 are disposed in the accommodating space 1136 formed by the plurality of first metal grids 1132. In the present embodiment, the coil 114 is formed by winding through photolithography and etching process, but not limited thereto. In one embodiment, each of the coils 114 is bent to form a non-crossed fence-like structure, so as to form a large-area charging area for receiving the electric energy transmitted by the wireless charging power supply 2. In one embodiment, the material of the coil 114 is a metal or a conductive metal oxide. For example, the metal material of the coil 114 may be gold, silver, aluminum, copper, etc., but is not limited thereto. The conductive metal oxide material of the coil 114 may be indium tin oxide.
In this embodiment, the display panel 11, the middle frame 12, the battery 13 and the rear cover 16 are sequentially disposed along a third direction. The third direction is perpendicular to the first direction and the second direction. The wireless charging device 1 is in the upward posture of the display panel 11 during normal use. The display panel 11 is positioned uppermost and the rear cover 16 is positioned lowermost. When the wireless charging device 1 is charged, the display panel 11 is placed above the wireless charging power supply 2 in a downward posture, the third direction is a downward direction, the display panel 11 is located at the lowest position, and the rear cover 16 is located at the highest position, as shown in fig. 2.
In summary, in the present embodiment, the coil 114 is disposed in the display panel 11, and thereby the battery 13 is charged by receiving the magnetic field generated by the wireless charging power supply 2 to generate an induced current. The magnetic field need not pass through the rear cover 16 during charging. Therefore, the wireless charging device solves the problem that the metal shell is avoided in the design of the wireless charging device 1, and also solves the problem that the metal shell is required to be grooved when the design of the metal shell is adopted, so that the appearance of the wireless charging device is damaged.
Although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the invention.
Claims (9)
1. A wireless charging device comprises a display panel, a processor and a battery, wherein the battery is respectively connected with the display panel and the processor and used for providing power required by the wireless charging device, the processor is connected with the display panel, the wireless charging device is characterized in that the display panel comprises a touch sensor and a plurality of coils, the touch sensor comprises a plurality of metal grids used for detecting touch operation, the processor is used for processing the touch operation, the plurality of coils are arranged among the plurality of metal grids and respond to a magnetic field generated by a wireless charging power supply to generate induction current, the wireless charging device also comprises a charging circuit, the charging circuit is connected with the plurality of coils and the battery and used for collecting the induction current generated by the plurality of coils and charging the battery by using the induction current, the plurality of metal grids comprise a plurality of first metal grids and a plurality of second metal grids, the plurality of first metal grids extend along a first direction to form a first metal grid layer, the plurality of second metal grids extend along a second direction to form a second metal grid layer, the first direction is perpendicular to the second direction, an accommodating space is formed between every two adjacent first metal grids, the plurality of coils are arranged in the accommodating space formed by the plurality of first metal grids, and each coil is bent into a non-crossed fence-shaped structure.
2. The wireless charging device of claim 1, wherein the plurality of coils are wound by photolithography.
3. The wireless charging device as claimed in claim 1, wherein the plurality of coils and the plurality of first metal grids are disposed alternately along the second direction, and the second metal grid layer is disposed between the first metal grid layer and the battery.
4. The wireless charging device as claimed in claim 3, further comprising a middle frame and a rear cover, wherein the display panel, the middle frame, the battery and the rear cover are sequentially disposed along a third direction, respectively, and the third direction is perpendicular to the first direction and the second direction.
5. The wireless charging device as claimed in claim 4, wherein the wireless charging device is placed above the wireless charging power source in a downward posture of the display panel during charging, and the third direction is a downward direction.
6. The wireless charging device of claim 4, wherein the display panel is a liquid crystal display panel or an organic light emitting diode display panel.
7. The wireless charging device of claim 4, wherein the rear cover is a metal housing.
8. The wireless charging device of claim 1, wherein the material of the plurality of coils is metal or conductive metal oxide.
9. The wireless charging device of claim 1, wherein the wireless charging device is a smart phone, a wearable device, or a tablet computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711319392.8A CN109921476B (en) | 2017-12-12 | 2017-12-12 | Wireless charging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711319392.8A CN109921476B (en) | 2017-12-12 | 2017-12-12 | Wireless charging device |
Publications (2)
| Publication Number | Publication Date |
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| CN109921476A CN109921476A (en) | 2019-06-21 |
| CN109921476B true CN109921476B (en) | 2022-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711319392.8A Active CN109921476B (en) | 2017-12-12 | 2017-12-12 | Wireless charging device |
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Citations (6)
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| KR20140046947A (en) * | 2012-10-11 | 2014-04-21 | 엘지이노텍 주식회사 | Touch panel, display device with the same and methde of cordless charging |
| CN104063091A (en) * | 2014-06-06 | 2014-09-24 | 上海天马微电子有限公司 | Inductance touch screen, inductance touch display panel and inductance touch display device |
| CN203982340U (en) * | 2014-07-14 | 2014-12-03 | 联想(北京)有限公司 | Touch-screen and electronic equipment |
| CN106208278A (en) * | 2016-09-27 | 2016-12-07 | 乐视控股（北京）有限公司 | Wireless charging device, electronic equipment and wireless charging method |
| CN107222033A (en) * | 2017-06-30 | 2017-09-29 | 努比亚技术有限公司 | A kind of wireless charging method and wireless charging electroplax |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103927070B (en) * | 2013-08-23 | 2017-04-19 | 上海天马微电子有限公司 | Embedded electromagnetic touch display screen and touch display device |
| KR102238813B1 (en) * | 2014-01-28 | 2021-04-09 | 엘지이노텍 주식회사 | Touch window |
| KR101581672B1 (en) * | 2014-06-09 | 2015-12-31 | 주식회사 더한 | Multiple input pad and input system capable of detecting electrostatic touch and induced electromagnetic field |
| KR102499120B1 (en) * | 2016-02-17 | 2023-02-15 | 삼성전자주식회사 | Electronic device including antenna |
| CN106502471B (en) * | 2016-12-21 | 2023-05-30 | 深圳市精源宇科技有限公司 | Handwriting drawing screen |
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2017
- 2017-12-12 CN CN201711319392.8A patent/CN109921476B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102654801A (en) * | 2011-03-04 | 2012-09-05 | 联胜（中国）科技有限公司 | Touch control panel and electronic device |
| KR20140046947A (en) * | 2012-10-11 | 2014-04-21 | 엘지이노텍 주식회사 | Touch panel, display device with the same and methde of cordless charging |
| CN104063091A (en) * | 2014-06-06 | 2014-09-24 | 上海天马微电子有限公司 | Inductance touch screen, inductance touch display panel and inductance touch display device |
| CN203982340U (en) * | 2014-07-14 | 2014-12-03 | 联想(北京)有限公司 | Touch-screen and electronic equipment |
| CN106208278A (en) * | 2016-09-27 | 2016-12-07 | 乐视控股（北京）有限公司 | Wireless charging device, electronic equipment and wireless charging method |
| CN107222033A (en) * | 2017-06-30 | 2017-09-29 | 努比亚技术有限公司 | A kind of wireless charging method and wireless charging electroplax |
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| Publication number | Publication date |
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| CN109921476A (en) | 2019-06-21 |
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