CN116887474A - Driving device of LED array and electronic equipment - Google Patents
Driving device of LED array and electronic equipment Download PDFInfo
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- CN116887474A CN116887474A CN202311143987.8A CN202311143987A CN116887474A CN 116887474 A CN116887474 A CN 116887474A CN 202311143987 A CN202311143987 A CN 202311143987A CN 116887474 A CN116887474 A CN 116887474A
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- led lamp
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- 238000010586 diagram Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 2
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
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Abstract
The application discloses a driving device and electronic equipment of an LED array, wherein the driving device of the LED array comprises the LED array, the LED array comprises at least one LED lamp group and at least two IO lines, the LED lamp group comprises at least one LED lamp, a first pole of each LED lamp in each LED lamp group is electrically connected with the same IO line in the at least two IO lines, a second pole of each LED lamp in each LED lamp group is electrically connected with other IO lines in the at least two IO lines respectively, and a first pole of each LED lamp group is connected with different IO lines respectively. The scheme can reduce the instantaneous current for driving the LED array.
Description
Technical Field
The application relates to the technical field of LED control, in particular to a driving device of an LED array and electronic equipment.
Background
Light-Emitting Diode (LED) lamps are widely used in various electronic products, and a large number of LED lamps are used in many products. When driving a large number of LED lamps, if all the LED lamps are driven at the same time, the instantaneous current becomes very large along with the increase of the number of the LED lamps, so that the problems of large heating value, shortened service life and the like of the LED lamps are caused.
Disclosure of Invention
The application provides a driving device and electronic equipment of an LED array, which can reduce the instantaneous current for driving the LED array.
In a first aspect, the present application provides a driving apparatus for an LED array, comprising:
the LED array comprises at least one LED lamp group and at least two IO lines, the LED lamp group comprises at least one LED lamp, each LED lamp group is provided with a first electrode and a second electrode, the first electrode of each LED lamp is electrically connected with the same IO line in the at least two IO lines, each LED lamp group is provided with a second electrode and at least two other IO lines in the IO lines, and each LED lamp group is provided with a first electrode and a second electrode, wherein the first electrode of each LED lamp group is electrically connected with different IO lines.
In the driving device for an LED array provided by the present application, the LED lamp group includes at most m LED lamps, where m=the number of IO lines (the number of IO lines—1).
The driving device of the LED array further comprises an IO control module, wherein IO pins are arranged on the IO control module, and the IO pins are electrically connected with the IO wires.
The driving device of the LED array further comprises a scanning logic module, wherein the scanning logic module is electrically connected with the IO control module and is used for dynamically scanning the LED array through the IO control module so as to independently control each LED lamp to be turned on or turned off.
In the driving device of the LED array, the scanning logic module is used for controlling the states of two IO lines respectively connected with two poles of each LED lamp through the IO control module so as to independently control each LED lamp to be turned on or turned off.
In the driving device of the LED array provided by the application, when the first electrode is an anode and the second electrode is a cathode, the logic scanning module is used for sequentially controlling the IO lines connected with the first electrode of each LED lamp to output a high level and the IO lines connected with the second electrode of each LED lamp to output a low level through the IO control module, and sequentially controlling the IO lines except for the two IO lines respectively connected with the two poles of each LED lamp to output a high-impedance state so as to turn on or off each LED lamp.
In the driving device of the LED array provided by the application, when the first electrode is a cathode and the second electrode is an anode, the logic scanning module is used for sequentially controlling the IO lines connected with the first electrode of each LED lamp to output a low level and the IO lines connected with the second electrode of each LED lamp to output a high level through the IO control module, and sequentially controlling the IO lines except for the two IO lines respectively connected with the two poles of each LED lamp to output a high-impedance state so as to turn on or off each LED lamp.
In the driving device of the LED array provided by the present application, the time for which each of the IO lines is controlled to be high level or low level is the same.
In the driving device of the LED array provided by the application, the lighting time of each LED lamp is the same.
In a second aspect, the present application provides an electronic device comprising a driving arrangement of an LED array as described in any one of the preceding claims.
In summary, the driving device of the LED array provided by the application comprises the LED array, the LED array comprises at least one LED lamp group and at least two IO lines, the LED lamp group comprises at least one LED lamp, the first pole of each LED lamp in each LED lamp group is electrically connected with the same IO line in the at least two IO lines, the second pole of each LED lamp in each LED lamp group is electrically connected with other IO lines in the at least two IO lines, and the first poles of each LED lamp group are respectively connected with different IO lines. According to the scheme, each LED lamp can be independently controlled, so that the instantaneous current for driving the LED array can be reduced by dynamically scanning the LED array.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a driving apparatus for an LED array according to an embodiment of the present application.
Fig. 2 is a schematic structural diagram of an LED array according to an embodiment of the present application.
Fig. 3 is a schematic diagram of an IO line arrangement manner according to an embodiment of the present application.
Fig. 4 is a schematic diagram of a scanning mode period according to an embodiment of the present application.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the application. Rather, they are merely examples of apparatus and methods consistent with aspects of the application as detailed in the accompanying claims.
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, the element defined by the phrase "comprising one … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element, and furthermore, elements having the same name in different embodiments of the application may have the same meaning or may have different meanings, the particular meaning of which is to be determined by its interpretation in this particular embodiment or by further combining the context of this particular embodiment.
It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.
In the following description, suffixes such as "module", "component", or "unit" for representing elements are used only for facilitating the description of the present application, and have no specific meaning in themselves. Thus, "module," "component," or "unit" may be used in combination.
In the description of the present application, it should be noted that the positional or positional relationship indicated by the terms such as "upper", "lower", "left", "right", "inner", "outer", etc. are based on the positional or positional relationship shown in the drawings, are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The technical schemes shown in the application will be respectively described in detail through specific examples. The following description of the embodiments is not intended to limit the priority of the embodiments.
The LED lamp is widely used in various electronic products, and a large number of LED lamps can be used in a large number of products. When driving a large number of LED lamps, if all the LED lamps are driven at the same time, the instantaneous current becomes very large along with the increase of the number of the LED lamps, so that the problems of large heating value, shortened service life and the like of the LED lamps are caused.
Based on this, the embodiment of the application provides a driving device of an LED array and an electronic device, and it should be noted that the driving device of the LED array may be integrated in the electronic device. The electronic device can be a mobile phone, a wearable intelligent device, a tablet computer, a notebook computer, a personal computer (PC, personal Computer) and other terminal devices.
The driving device and the electronic device for the LED array provided by the embodiments of the present application will be described in detail below. It should be noted that the following description order of embodiments is not a limitation of the priority order of embodiments.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a driving device of an LED array according to an embodiment of the application. The driving device of the LED array may include an LED array 10, an IO control module 20, and a scan logic module 30.
The LED array 10 includes at least one LED lamp group and at least two IO lines, the LED lamp group includes at least one LED lamp, a first pole of each LED lamp in each LED lamp group is electrically connected with the same IO line in the at least two IO lines, a second pole of each LED lamp in each LED lamp group is electrically connected with other IO lines in the at least two IO lines, and a first pole of each LED lamp group is connected with different IO lines.
In the embodiment of the present application, the LED lamp group includes at most m LED lamps, where m=the number of IO lines (i.e. the number of IO lines—1). For example, the number of IO lines is 3, and then the number of LED lamps is 6. For another example, the number of IO lines is 4, and then the number of LED lamps is 12.
It is understood that the first pole may be an anode or a cathode and the second pole may be an anode or a cathode. When the first electrode is an anode, the second electrode is a cathode; when the first electrode is a cathode, the second electrode is an anode.
In some embodiments, when the LED array 10 has 6 IO lines, up to 30 LED lamps may be disposed in the LED array 10, and the specific arrangement may be as shown in fig. 2. It should be noted that, in fig. 2, each row of LED lamps (i.e., the LED lamps in the dashed box) is an LED lamp group.
The LED lamp sets in the dashed line frame are set as the first lamp set, and the rest are sequentially set as the second lamp set, the third lamp set, the fourth lamp set, the fifth lamp set and the sixth lamp set. At this time, the first pole of each LED lamp in the first lamp group is electrically connected with IO1, the first pole of each LED lamp in the second lamp group is electrically connected with IO2, the first pole of each LED lamp in the third lamp group is electrically connected with IO3, the first pole of each LED lamp in the fourth lamp group is electrically connected with IO4, the first pole of each LED lamp in the fifth lamp group is electrically connected with IO5, and the first pole of each LED lamp in the sixth lamp group is electrically connected with IO 6.
The second pole of the first LED lamp in the first lamp group is electrically connected with IO 2; a second pole of a second LED lamp in the first lamp group is electrically connected with IO 3; the second pole of the third LED lamp in the first lamp group is electrically connected with IO 4; the second pole of the fourth LED lamp in the first lamp group is electrically connected with IO 5; the second pole of the fifth LED lamp in the first lamp group is electrically connected with IO 6. It should be noted that, the arrangement mode of each LED lamp in the second lamp set, the third lamp set, the fourth lamp set, the fifth lamp set and the sixth lamp set is shown in the figure, and will not be described in detail herein.
Note that, the arrangement of the IO lines of the LED array 10 includes, but is not limited to, the arrangement shown in fig. 2. The arrangement of the IO lines of the LED array 10 may also be as shown in FIG. 3. The LED lamps are similar to those shown in fig. 2, and are not described in detail herein.
The IO control module 20 is provided with an IO pin, and the IO pin is electrically connected to an IO line.
The scan logic module 30 is electrically connected to the IO control module 20, and the scan logic module 30 is configured to dynamically scan the LED array 10 through the IO control module 20 to individually control each LED lamp to be turned on or off.
It is understood that IO in the embodiments of the present application refers to I/O, i.e., input/Output (I/O).
In a specific implementation process, the scan logic module 30 is configured to control, through the IO control module 20, states of two IO lines respectively connected to two poles of each LED lamp, so as to individually control each LED lamp to be turned on or off.
Specifically, when the first electrode is an anode and the second electrode is a cathode, the logic scanning module 30 is configured to sequentially control, through the IO control module 20, the IO line connected to the first electrode of each LED lamp to output a high level, and the IO line connected to the second electrode of each LED lamp to output a low level, and sequentially control each LED lamp to turn on or off by controlling the IO lines other than the two IO lines respectively connected to the two electrodes of each LED lamp to output a high resistance state.
When the first electrode is a cathode and the second electrode is an anode, the logic scanning module 30 is configured to sequentially control, through the IO control module 20, the IO line connected to the first electrode of each LED lamp to output a low level, and the IO line connected to the second electrode of each LED lamp to output a high level, and to sequentially control each LED lamp to turn on or off by controlling the IO lines except for the two IO lines respectively connected to the two electrodes of each LED lamp to output a high resistance state.
For example, as shown in fig. 4, in some embodiments, when n IO lines are used as an array, a period time is T, each IO line is sequentially controlled to be at a low level in one period in sequence, a time t=t/n when each IO line is controlled to be at a low level, and when other IO control outputs a high level in a time T when each IO line is controlled to be at a low level, a corresponding connected LED lamp is turned on.
It will be appreciated that in the implementation, the scanning order of the LED array is variable, and the scanning can be started from IO1 to IOn at will.
In summary, the driving device for an LED array provided by the embodiment of the present application includes an LED array 10, where the LED array 10 includes at least one LED lamp group and at least two IO lines, the LED lamp group includes at least one LED lamp, a first pole of each LED lamp in each LED lamp group is electrically connected to the same IO line in the at least two IO lines, a second pole of each LED lamp in each LED lamp group is electrically connected to other IO lines in the at least two IO lines, and a first pole of each LED lamp group is connected to a different IO line. The scheme can independently control each LED lamp, so that the instantaneous current for driving the LED array 10 can be reduced by dynamically scanning the LED array 10
In addition, the embodiment of the application can independently control a large number of LED lamps under the condition of using few IO lines, namely, the brightness of each LED lamp is ensured and the scanning time of each LED lamp is ensured.
For the driving device of the LED array provided by the embodiment of the present application, each functional module may be integrated in one processing chip, or each module may exist separately and physically, or two or more modules may be integrated in one module. The integrated modules may be implemented in hardware or in software functional modules. The integrated modules may also be stored in a computer readable storage medium if implemented as software functional modules and sold or used as a stand-alone product.
The driving device and the electronic device of the LED array provided by the present application are respectively described in detail, and specific examples are applied to illustrate the principle and the implementation of the present application, and the description of the above examples is only used to help understand the core idea of the present application; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in light of the ideas of the present application, the present description should not be construed as limiting the present application.
Claims (10)
1. A driving device of an LED array, comprising:
the LED array comprises at least one LED lamp group and at least two IO lines, the LED lamp group comprises at least one LED lamp, each LED lamp group is provided with a first electrode and a second electrode, the first electrode of each LED lamp is electrically connected with the same IO line in the at least two IO lines, each LED lamp group is provided with a second electrode and at least two other IO lines in the IO lines, and each LED lamp group is provided with a first electrode and a second electrode, wherein the first electrode of each LED lamp group is electrically connected with different IO lines.
2. The LED array driving apparatus according to claim 1, wherein the LED lamp group includes at most m LED lamps, m=the number of IO lines (the number of IO lines-1).
3. The driving device for an LED array according to claim 1, further comprising an IO control module, wherein an IO pin is provided on the IO control module, and the IO pin is electrically connected to the IO line.
4. The driving device of the LED array according to claim 1, further comprising a scan logic module electrically connected to the IO control module, the scan logic module being configured to dynamically scan the LED array through the IO control module to individually control each of the LED lamps to be turned on or off.
5. The LED array driving apparatus of claim 4, wherein the scan logic module is configured to control states of two IO lines respectively connected to two poles of each of the LED lamps through the IO control module, so as to individually control each of the LED lamps to be turned on or off.
6. The LED array driving apparatus of claim 5, wherein when the first electrode is an anode and the second electrode is a cathode, the logic scanning module is configured to sequentially control, through the IO control module, an IO line output high level connected to the first electrode of each LED lamp, and an IO line output low level connected to the second electrode of each LED lamp, and sequentially control each LED lamp to be turned on or off by controlling an IO line output high impedance state except for two IO lines respectively connected to the two electrodes of each LED lamp.
7. The LED array driving apparatus of claim 5, wherein when the first electrode is a cathode and the second electrode is an anode, the logic scanning module is configured to sequentially control, through the IO control module, an IO line output low level connected to the first electrode of each LED lamp, and an IO line output high level connected to the second electrode of each LED lamp, and sequentially control each LED lamp to be turned on or off by controlling an IO line output high impedance state except for two IO lines respectively connected to the two electrodes of each LED lamp.
8. The driving device of an LED array according to claim 6 or 7, wherein a time at which each of the IO lines is controlled to be high or low is the same.
9. The LED array driving apparatus of claim 8, wherein the lighting time of each of the LED lamps is the same.
10. An electronic device comprising a driving arrangement of an LED array according to any one of claims 1-9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311143987.8A CN116887474A (en) | 2023-09-06 | 2023-09-06 | Driving device of LED array and electronic equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311143987.8A CN116887474A (en) | 2023-09-06 | 2023-09-06 | Driving device of LED array and electronic equipment |
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| CN116887474A true CN116887474A (en) | 2023-10-13 |
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| CN110390904A (en) * | 2018-04-13 | 2019-10-29 | 比亚迪股份有限公司 | The driving device and method of electronic equipment and LED array |
| CN113516943A (en) * | 2021-08-13 | 2021-10-19 | 珠海格力电器股份有限公司 | Control device and method of LED array and LED display screen |
| CN114784046A (en) * | 2022-05-19 | 2022-07-22 | 深圳市奋达科技股份有限公司 | Display device of LED array and electronic display screen |
| CN217588941U (en) * | 2022-05-19 | 2022-10-14 | 深圳市奋达科技股份有限公司 | Display device of LED array and electronic display screen |
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- 2023-09-06 CN CN202311143987.8A patent/CN116887474A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110390904A (en) * | 2018-04-13 | 2019-10-29 | 比亚迪股份有限公司 | The driving device and method of electronic equipment and LED array |
| CN109766249A (en) * | 2019-01-09 | 2019-05-17 | 郑州云海信息技术有限公司 | A kind of state display device of array hard disk |
| CN113516943A (en) * | 2021-08-13 | 2021-10-19 | 珠海格力电器股份有限公司 | Control device and method of LED array and LED display screen |
| CN114784046A (en) * | 2022-05-19 | 2022-07-22 | 深圳市奋达科技股份有限公司 | Display device of LED array and electronic display screen |
| CN217588941U (en) * | 2022-05-19 | 2022-10-14 | 深圳市奋达科技股份有限公司 | Display device of LED array and electronic display screen |
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