CN214847672U - LED driving device, LED driving system and display equipment - Google Patents

Abstract

The utility model relates to a LED drive arrangement, LED actuating system and display device. The LED driving device includes: the storage module comprises M memories, the input end of each memory is connected with the burner, and each memory is used for storing display data burned by the burner; the LED driving module comprises N LED driving chips, the input ends of the LED driving chips are connected with the output end of the memory, the output ends of the LED driving chips are used for being connected with an LED, and the LED driving chips are used for driving the LED pixels to emit light based on the display data stored in the memory; wherein N and M are natural numbers of 1 or more. The LED driving device can reduce the power consumption of the LED display screen during displaying. The LED driving system circuit comprises the LED driving device. The display device comprises the LED driving device.

Description

LED driving device, LED driving system and display equipment

Technical Field

The utility model relates to a LED (Light Emitting Diode) technical field especially relates to a LED drive arrangement, LED actuating system and display device.

Background

With the development of the LED technology, an LED display screen appears, and when the LED display screen needs to display, the LED driving chip drives the correspondingly connected LED pixels to emit light, thereby realizing the display of the LED display screen.

At present, when an LED display screen needs to display, display data is output to a multimedia controller through a computer host, and then the display data is forwarded to an LED driving chip by the multimedia controller, so that the LED driving chip drives correspondingly connected LED pixels to emit light, thereby completing display.

However, the current LED display screen needs to be implemented by a host computer and a multimedia controller during displaying, which results in very large power consumption of the LED display screen during displaying.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is desirable to provide an LED driving device, an LED driving system, and a display device capable of reducing power consumption of an LED display panel during display.

An LED driving apparatus comprising:

the storage module comprises M memories, the input end of each memory is connected with the burner, and each memory is used for storing display data burned by the burner;

the LED driving module comprises N LED driving chips, the input ends of the LED driving chips are connected with the output end of the memory, the output ends of the LED driving chips are used for being connected with an LED, and the LED driving chips are used for driving the LED pixels to emit light based on the display data stored in the memory;

wherein N and M are natural numbers of 1 or more.

In one embodiment, the memory module and the LED driving module are packaged in one package, or the memory module is integrated in the LED driving module.

In one embodiment, N is greater than M, and at least two of the N LED driving chips share one memory.

In one embodiment, the shared memory comprises:

the LED display device comprises a plurality of LED drive chips, a plurality of connection ports and a plurality of N connection ports, wherein the plurality of connection ports are correspondingly connected with at least two of the N LED drive chips one to one, and the connection ports are used for transmitting display data to the correspondingly connected LED drive chips.

In one embodiment, at least two of the N LED driving chips constitute a serial link, and one of the LED driving chips of the serial link is connected to a common memory to forward display data stored in the common memory to other LED driving chips in the serial link.

In one embodiment, when N > 1, the N LED driving chips are connected in series, and a synchronization signal is forwarded between the N LED driving chips connected in series, where the synchronization signal is used to instruct the N LED driving chips to drive the corresponding LED pixels to emit light with the display data of the same frame.

In one embodiment, the memory includes at least one of volatile memory and non-volatile memory.

In one embodiment, the method further comprises the following steps:

the communication module is used for being connected with at least one of the storage module and the LED driving module, and the communication module is used for receiving display data sent from the outside so as to transmit the display data sent from the outside to at least one of the storage module and the LED driving module.

An LED driving system comprises the LED driving device, and further comprises:

and the burner is used for burning display data to the memory.

A display device comprises the LED driving device.

According to the LED driving device, the LED driving system and the display equipment, the display data burnt by the burner is stored through the memory, and the LED driving chip drives the LED pixels to emit light by utilizing the display data stored by the memory.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments or the conventional technologies of the present application, the drawings used in the descriptions of the embodiments or the conventional technologies will be briefly introduced below, it is obvious that the drawings in the following descriptions are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an LED driving apparatus according to an embodiment;

fig. 2 is a schematic diagram of at least two of the N LED driving chips sharing one memory according to an embodiment;

FIG. 3 is a diagram illustrating that at least two of the N LED driver chips share a memory according to an embodiment;

fig. 4 is a schematic structural diagram of another LED driving apparatus according to an embodiment.

Detailed Description

To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Embodiments of the present application are set forth in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

It will be understood that, as used herein, the terms "first," "second," and the like may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another. For example, a first resistance may be referred to as a second resistance, and similarly, a second resistance may be referred to as a first resistance, without departing from the scope of the present application. The first resistance and the second resistance are both resistances, but they are not the same resistance.

It is to be understood that "connection" in the following embodiments is to be understood as "electrical connection", "communication connection", and the like if the connected circuits, modules, units, and the like have communication of electrical signals or data with each other.

As used herein, the singular forms "a", "an" and "the" may include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises/comprising," "includes" or "including," etc., specify the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof. Also, as used in this specification, the term "and/or" includes any and all combinations of the associated listed items.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an LED driving apparatus according to an embodiment. In one embodiment, as shown in fig. 1, an LED driving apparatus 10 is provided, which includes a storage module 100 and an LED driving module 200. Wherein:

the memory module 100 includes M memories 110, an input end of the memory 110 is used for connecting with the burner 20, and the memory 110 is used for storing display data burned by the burner 20. The LED driving module 200 includes N LED driving chips 210, an input end of each LED driving chip 210 is connected to an output end of the memory 110, an output end of each LED driving chip 210 is used for being connected to an LED, and the LED driving chips 210 are used for driving the LED pixels 30 to emit light based on the display data stored in the memory 110. Wherein N and M are natural numbers of 1 or more.

The memory 110 is a storage unit for storing programs and various data information. In the present embodiment, the memory 110 is at least used for storing display data. The burner 20 refers to a programmable integrated circuit writing tool. In the present embodiment, the burner 20 is used for burning the display data into the memory 110. In this embodiment, there is at least one memory 110, and there is at least one LED driving chip 210. The size of N and M is not particularly limited in this embodiment. For example, N.gtoreq.M, or N < M. Specifically, when N ═ M, each LED driving chip 210 is connected to one memory 110; when N is greater than M, at least two of the N LED driving chips 210 share one memory 110; when N is less than M, at least two of the M memories 110 are connected to one LED driving chip 210.

Specifically, before display is needed, the burner 20 burns the display data into the memory 110, and when display is needed, the N LED driving chips 210 respectively read the display data burnt in advance from the correspondingly connected memory 110, so as to drive the correspondingly connected LED pixels 30 to emit light by using the display data. Since the LED driving chip 210 reads the pre-programmed display data from the memory 110 to drive the LED pixels 30 to emit light, when the LED display screen needs to switch video or image, new display data is programmed into the memory 110 again.

In the embodiment, because the display data acquired by the LED driving chip 210 is pre-burned in the memory 110, the display data is burned in the memory 110 before displaying, and the display data stored in the memory 110 only needs to be read by the LED driving chip 210 when the LED display screen is displayed, and the display can be realized without using a computer host and a multimedia controller, so that the power consumption generated by the work of the computer host and the multimedia controller is reduced, the problem of very large power consumption of the LED display screen during displaying is avoided, and the power consumption of the LED display screen during displaying is reduced. In addition, the reduction of a computer host and a multimedia controller reduces the requirement on wiring, does not need to require a large amount of high-speed data transmission during high-frame-rate display, greatly reduces the requirement on signal routing, and does not need to use a large amount of high-speed shielding wires and multilayer PCB boards. In addition, due to the fact that the real-time performance of data transmission is enhanced, screen flicker caused by data error codes can be reduced, and the anti-interference capacity is greatly improved. In addition, since the LED driving chip 210 can directly read the display data from the memory 110, the time length for the display data to be transmitted from the computer host to the multimedia controller and then transmitted from the multimedia controller to the LED driving chip 210 is reduced, and the frame rate of the LED display can be improved.

When N > 1, that is, when there are a plurality of LED driving chips 210, the synchronization signals need to be forwarded between the plurality of LED driving chips 210, so that the plurality of LED driving chips 210 drive the corresponding LED pixels 30 to emit light according to the display data of the same frame. Specifically, the video is formed by arranging one frame of images according to a certain time sequence, and the plurality of LED driving chips 210 can drive the corresponding LED pixels 30 to emit light according to the display data of the same frame through the synchronization signal, so that the picture displayed by the display screen is complete and normal.

In one embodiment, the memory 110 optionally includes at least one of volatile memory 110 and non-volatile memory 110.

In one embodiment, the memory module 100 and the LED driving module 200 are packaged in one package. In the present embodiment, the Package includes various types of packages, such as a Small Out-Line Package (SOP)/dual in-Line Package (DIP), and the specific type of the Package is not limited in the present embodiment. The memory module 100 and the LED driving module 200 may transmit display data through one or more paths.

In one embodiment, the memory module 100 is integrated within the LED driver module 200. In the present embodiment, the LED driving apparatus 10 has a higher integration level, so that the instability and implementation difficulty caused by the connection between the memory module 100 and the LED driving module 200 are reduced.

In one embodiment, the LED driving chip 210 can drive the corresponding connected LED pixels 30 to emit light through one or more driving channels. It can be understood that by driving the LED pixels 30 to emit light in multiple ways, the stability of the light emission of the LED pixels 30 can be improved.

In one embodiment, the number of the memories 110 is less than the number of the LED driving chips 210, i.e., N > M, and at least two of the N LED driving chips 210 share one memory 110. In the present embodiment, when N-M is 1, two of the N LED driving chips 210 share one memory 110; when N-M > 1, three of the N LED driving chips 210 may share one memory 110, or four of the N LED driving chips 210 may be divided into two groups, each group includes two LED driving chips 210, and the two LED driving chips 210 of each group share one memory 110, which is not limited herein.

Referring to fig. 2, fig. 2 is a schematic diagram illustrating that at least two of the N LED driving chips 210 share one memory 110 according to an embodiment. In one embodiment, as shown in FIG. 2, the shared memory 110 includes a plurality of connection ports 111, wherein:

the plurality of connection ports 111 are correspondingly connected to at least two of the N LED driving chips 210, and the connection ports 111 are used for transmitting the display data to the correspondingly connected LED driving chips 210.

In this embodiment, the shared memory 110 has a plurality of connection ports 111, and each connection port 111 can be connected to one LED driving chip 210, so as to transmit the required display data to at least two LED driving chips 210 through the plurality of connection ports 111 of the shared memory 110.

Referring to fig. 3, fig. 3 is a schematic diagram illustrating that at least two of the N LED driving chips 210 share one memory 110 according to an embodiment. In one embodiment, the shared memory 110 has only one connection port 111, as shown in fig. 3, at least two of the N LED driving chips 210 form a serial link, and one LED driving chip 210 of the serial link is connected to the shared memory 110 to forward the display data stored in the shared memory 110 to the other LED driving chips 210 in the serial link.

The other LED driving chips 210 are chips other than the LED driving chips 210 connected to the common memory 110 in the serial link. In the present embodiment, the form of the serial link formed by at least two of the N LED driving chips 210 is not particularly limited. For example, at least two LED driving chips 210 may be cascaded in sequence, one of the cascaded LED driving chips 210 is connected to the shared memory 110, and the LED driving chip 210 connected to the shared memory 110 is responsible for forwarding the display data to other LED driving chips 210 in the cascaded link. For example, the LED driving chips A, B, C and D share one memory 110, the LED driving chips A, B, C and D are sequentially cascaded, the LED driving chip a is connected to the shared memory 110, and the LED driving chip a reads the display data in the shared memory 110 and forwards the display data to the LED driving chips B, C and D.

In addition, one of the at least two LED driving chips 210 may be connected to the common memory 110, and the other LED driving chips 210 are respectively connected to the LED driving chips 210 connected to the common memory 110, so that the display data may be transferred to the other LED driving chips 210 by the LED driving chips 210 connected to the common memory 110. For example, the LED driving chips A, B, C and D share one memory 110, and if the LED driving chip a is connected to the shared memory 110, the LED driving chips B, C and D are both connected to the LED driving chip a; if the LED driving chip B is connected to the common memory 110, both the LED driving chips A, C and D are connected to the LED driving chip B.

In one embodiment, when N > 1, the N LED driving chips 210 are connected in series, and the N LED driving chips 210 connected in series forward a synchronization signal, where the synchronization signal is used to instruct the N LED driving chips 210 to drive the corresponding LED pixels 30 to emit light with the same frame of display data.

In this embodiment, the N LED driving chips 210 may forward the synchronization signal in a cascade manner.

In this embodiment, the forwarding of the synchronization signal is performed between the N LED driving chips 210 connected in series, so that the normal synchronous display of the LED display screen can be ensured.

In one embodiment, a carrier power source may be further provided, and the carrier power source is connected to each LED driving chip 210, so that the carrier power source sends a synchronization signal to the N LED driving chips 210 in a power carrier manner.

Referring to fig. 4, fig. 4 is a schematic structural diagram of another LED driving apparatus according to an embodiment. In one embodiment, the LED driving apparatus 10 further includes a communication module 300. Wherein:

the communication module 300 is configured to be connected to at least one of the storage module 100 and the LED driving module 200, and the communication module 300 is configured to receive display data sent from the outside, so as to transmit the display data sent from the outside to at least one of the storage module 100 and the LED driving module 200.

In this embodiment, specifically, the communication module 300 may be connected to only the storage module 100, only the LED driving module 200, or both the storage module 100 and the LED driving module 200, which is not limited herein. When the communication module 300 is connected to the memory module 100, the communication module 300 transmits the display data transmitted from the outside to the M memories 110 of the memory module 100 for storage. When the communication module 300 is connected to the LED driving module 200, the communication module 300 forwards the display data to the LED driving chip 210 in real time, so that the LED driving chip 210 drives the LED pixel 30 to emit light. In addition, the display data can be transmitted to the storage module 100 through the communication module 300 for storage, and when display is required, the display data is simultaneously transmitted to the LED driving chip 210 through the communication module 300 and the storage module 100, so that the data volume of the display data which can be received by the LED driving chip 210 in unit time is larger, and a display effect with a higher frame rate and a better fidelity effect can be realized.

It is understood that the exterior of the present embodiment represents only components for transmitting display data to the communication module 300, relative to the LED driving apparatus 10. For example, the external device may be a computer host, a multimedia controller, etc., and is not limited herein.

In this embodiment, by providing the communication module 300, the LED driving device 10 can also display videos and images with high real-time requirements. For example, a video with high real-time requirement, such as a live broadcast, can be received through the communication module 300, so that the live broadcast is played on the LED display screen.

It should be noted that the communication module 300 of the present embodiment may be a wireless communication module 300, such as a 4G communication module 300, a 5G communication module 300, a WiFi module, etc., and is not limited herein. Additionally, the communication module 300 may also be a limited communication module 300.

In one embodiment, an LED driving system is also provided. The LED driving system comprises an LED driving device 10 and a burner 20. For the description of the LED driving apparatus 10, reference may be made to the description of any one of the above embodiments, which is not repeated herein. The burner 20 is used for burning display data into the memory 110.

In one embodiment, a display device is also provided. The display device includes the LED driving apparatus 10 according to any of the above embodiments. It is understood that the display device of the present embodiment may include not only the LED driving apparatus 10, but also other components for implementing a display function, which can be determined by referring to the prior art, and the present embodiment is not particularly limited.

The LED driving apparatus 10, the LED driving system and the display device can be used in a scene with low real-time requirement of the displayed video or image, and if the LED driving apparatus 10 needs to be used in a scene with real-time requirement of the displayed video or image, a communication module 300 can be arranged in the LED driving apparatus 10.

In the description herein, references to the description of "some embodiments," "other embodiments," "desired embodiments," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, a schematic description of the above terminology may not necessarily refer to the same embodiment or example.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. An LED driving apparatus, comprising:

the storage module comprises M memories, the input end of each memory is connected with the burner, and each memory is used for storing display data burned by the burner;

the LED driving module comprises N LED driving chips, the input ends of the LED driving chips are connected with the output end of the memory, the output ends of the LED driving chips are used for being connected with an LED, and the LED driving chips are used for driving the LED pixels to emit light based on the display data stored in the memory;

wherein N and M are natural numbers of 1 or more.

2. The LED driving apparatus according to claim 1, wherein the memory module and the LED driving module are packaged in one package, or the memory module is integrated in the LED driving module.

3. The LED driving apparatus according to claim 1, wherein N > M, at least two of the N LED driving chips sharing one memory.

4. The LED driving apparatus according to claim 3, wherein the common memory includes:

the LED display device comprises a plurality of LED drive chips, a plurality of connection ports and a plurality of N connection ports, wherein the plurality of connection ports are correspondingly connected with at least two of the N LED drive chips one to one, and the connection ports are used for transmitting display data to the correspondingly connected LED drive chips.

5. The LED driving apparatus according to claim 3, wherein at least two of the N LED driving chips constitute a serial link, and one of the LED driving chips of the serial link is connected to a common memory to forward display data stored in the common memory to other LED driving chips in the serial link.

6. The LED driving apparatus according to claim 1, wherein when N > 1, the N LED driving chips are connected in series, and a synchronization signal is forwarded between the N LED driving chips connected in series, wherein the synchronization signal is used for instructing the N LED driving chips to drive the corresponding LED pixel to emit light with the same frame of display data.

7. The LED driving apparatus according to claim 1, wherein the memory includes at least one of a volatile memory and a non-volatile memory.

8. The LED driving apparatus according to any one of claims 1 to 7, further comprising:

the communication module is used for being connected with at least one of the storage module and the LED driving module, and the communication module is used for receiving display data sent from the outside so as to transmit the display data sent from the outside to at least one of the storage module and the LED driving module.

9. An LED driving system comprising the LED driving apparatus according to any one of claims 1 to 8, further comprising:

a burner.

10. A display device comprising the LED driving apparatus according to any one of claims 1 to 8.

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