Driving circuit group, LED lamp string and LED display system

Abstract

The utility model relates to a driving circuit group, an LED lamp string and an LED display system. The driving circuit group comprises 2N driving circuits; the driving circuit groups are distributed in two rows and N columns; for each column of driving circuits in the driving circuits from the second column to the (N-1) th column, the second standby end of the driving circuit located in the first row in each column of driving circuits is connected with the first standby end of the driving circuit located in the second row to form a first bidirectional standby data channel corresponding to each column of driving circuits; the first bidirectional standby data channel is used for transmitting a first standby communication signal to the abnormal driving circuit under the condition that any driving circuit in the corresponding column of driving circuits has communication abnormity, so as to ensure that the abnormal driving circuit can recover the communication function in time and ensure the normal work of the subsequent driving circuit; the problem that in the prior art, a whole communication link is interrupted due to communication abnormity of a single driving circuit is solved, and the reliability of the driving circuit group is effectively improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to a driving circuit group, an LED lamp string and an LED display system. BACKGROUND

[0002] As a kind of LED display screen, LED light bar screen is widely used in the scene such as outdoor large area display.The display screen is mainly composed of multiple LED lamp string units, and each LED lamp string unit corresponds to a display area of LED display screen.Usually, LED lamp string units are cascaded into groups to expand the display area of display screen.Each LED lamp string unit is generally composed of LED driving circuit and several LEDs, wherein the LED driving circuit is used for driving the LEDs in the current lamp string unit, and also undertakes the communication transmission work between the lamp string units in the group.

[0003] However, once an abnormality occurs in a driving circuit in the prior art, the entire communication link is interrupted, thereby affecting the work of subsequent driving circuits. UTILITY MODEL CONTENT

[0004] Therefore, it is necessary to provide a driving circuit group, an LED lamp string and an LED display system to solve the above technical problems.

[0005] In a first aspect, the present application provides a driving circuit group, which includes 2N driving circuits;The driving circuit group is distributed in 2 rows and N columns;The driving circuit is provided with a first communication end, a second communication end, a first backup end and a second backup end;

[0006] For each row of driving circuits, from the first to the Nth driving circuit, the second communication end of each driving circuit is connected to the first communication end of the next level driving circuit, to form a serial data channel corresponding to each row of driving circuits;

[0007] For each column of driving circuits from the second column to the N-1th column, the second backup end of the driving circuit in the first row of each column of driving circuits is connected to the first backup end of the driving circuit in the second row, to form a first bidirectional backup data channel corresponding to each column of driving circuits;

[0008] The first bidirectional backup data channel is used to transmit a first backup communication signal to an abnormal driving circuit in the case that any driving circuit in the corresponding column of driving circuits has a communication abnormality.

[0009] In one embodiment, the driving circuit is further provided with a first power supply end and a second power supply end.

[0010] The first power supply end of the first driving circuit in each row is used for connecting a first external power supply end;

[0011] The second power supply end of the Nth driving circuit in each row is used for connecting a second external power supply end;

[0012] For each of the first to N-1th driving circuits in each row, the second power supply end of each driving circuit is connected with the first power supply end of the next-stage driving circuit.

[0013] For each of the first to N-1th columns of driving circuits, the second power supply end of the driving circuit in the first row is connected with the second power supply end of the driving circuit in the second row.

[0014] In one of the embodiments, the first communication end, the second communication end, the first backup end and the second backup end all have bidirectional communication function.

[0015] In one of the embodiments, the driving circuit group is provided with a first communication port group and a second communication port group; the first communication port group includes a first I / O end and a second I / O end; the second communication port group includes a third I / O end and a fourth I / O end.

[0016] The first I / O end is the first communication end of the first driving circuit in the first row.

[0017] The second I / O end is the first communication end of the first driving circuit in the second row.

[0018] The third I / O end is the second communication end of the Nth driving circuit in the first row.

[0019] The fourth I / O end is the second communication end of the Nth driving circuit in the second row.

[0020] In one of the embodiments, the driving circuit group is further provided with a first backup port group and a second backup port group; the first backup port group includes a first backup I / O end and a second backup I / O end; the second backup port group includes a third backup I / O end and a fourth backup I / O end.

[0021] The first backup I / O end is the second backup end of the first driving circuit in the first row.

[0022] The second backup I / O end is the second backup end of the Nth driving circuit in the first row.

[0023] The third backup I / O end is the first backup end of the first driving circuit in the second row.

[0024] the fourth spare I / O port is a first spare port of the Nth driving circuit in the second row.

[0025] In a second aspect, the application further provides an LED lamp string, which comprises M driving circuit groups according to any one of the embodiments of the first aspect; the driving circuit groups are provided with a first communication port group, a second communication port group, a first spare port group and a second spare port group; M≥2;

[0026] For each of the first to M-1th driving circuit groups, the second communication port group of each of the driving circuit groups is connected to the first communication port group of the next level driving circuit group one by one, forming a plurality of data channels.

[0027] For each of the first to M-1th driving circuit groups, the first spare port group of each of the driving circuit groups is connected to the second spare port group of the next level driving circuit group one by one, forming a second bidirectional spare data channel corresponding to each of the driving circuit groups and the next level driving circuit group.

[0028] The second bidirectional spare data channel is used to transmit a second spare communication signal to an abnormal driving circuit group in the case that there is a communication abnormality in any of the corresponding two driving circuit groups.

[0029] In one of the embodiments, the first communication port group comprises a first I / O port and a second I / O port; the second communication port group comprises a third I / O port and a fourth I / O port; the plurality of data channels comprises a first data transmission channel and a second data transmission channel.

[0030] For each of the first to M-1th driving circuit groups, the third I / O port of each of the driving circuit groups is connected to the first I / O port of the next level driving circuit group, forming a first data transmission channel.

[0031] For each of the first to M-1th driving circuit groups, the fourth I / O port of each of the driving circuit groups is connected to the second I / O port of the next level driving circuit group, forming a second data transmission channel.

[0032] In one of the embodiments, the first spare port group comprises a first spare I / O port and a second spare I / O port; the second spare port group comprises a third spare I / O port and a fourth spare I / O port; the second bidirectional spare data channel comprises a first spare channel and a second spare channel.

[0033] The first spare I / O terminal of each of the first to the M-1th driving circuit groups is connected with the third spare I / O terminal of the next-stage driving circuit group, thereby forming a first spare channel corresponding to each of the driving circuit groups and the next-stage driving circuit group;

[0034] The second spare I / O terminal of each of the first to the M-1th driving circuit groups is connected with the fourth spare I / O terminal of the next-stage driving circuit group, thereby forming a second spare channel corresponding to each of the driving circuit groups and the next-stage driving circuit group.

[0035] In one of the embodiments, the first I / O terminal, the second I / O terminal, the third I / O terminal and the fourth I / O terminal all have bidirectional communication function.

[0036] In one of the embodiments, the first spare I / O terminal, the second spare I / O terminal, the third spare I / O terminal and the fourth spare I / O terminal all have bidirectional communication function.

[0037] In one of the embodiments, the driving circuit group is further provided with a first power supply port group and a second power supply port group.

[0038] The first power supply port groups of the M driving circuit groups are connected in parallel to a first external power supply terminal.

[0039] The second power supply port groups of the M driving circuit groups are connected in parallel to a second external power supply terminal.

[0040] In a third aspect, the present application further provides an LED display system, which comprises a master control terminal and at least one LED lamp string according to any one of the embodiments of the second aspect.

[0041] The master control terminal is in communication connection with the LED lamp string.

[0042] The driving circuit group, the LED lamp string and the LED display system, the driving circuit group comprises 2N driving circuits; the driving circuit group is distributed in 2 rows and N columns; the driving circuit is provided with a first communication end, a second communication end, a first standby end and a second standby end; for each row of driving circuits, from each driving circuit in the first driving circuit to the Nth driving circuit, the second communication end of each driving circuit is connected with the first communication end of the next stage driving circuit, to form a serial data channel corresponding to each row of driving circuits; based on the serial data channel corresponding to each row of driving circuits, the serial transmission of data between each row of driving circuits can be ensured, and the data flow can be effectively managed; for each column of driving circuits in the second column to the N-1th column of driving circuits, the second standby end of the driving circuit in the first row in each column of driving circuits is connected with the first standby end of the driving circuit in the second row, to form a first bidirectional standby data channel corresponding to each column of driving circuits; based on the first bidirectional standby data channel, in the case that any driving circuit in the corresponding column of driving circuits has a communication abnormality, a first standby communication signal can be transmitted to the abnormal driving circuit, to ensure that the abnormal driving circuit can timely recover the communication function, and the normal work of the subsequent driving circuit is ensured, thereby avoiding the problem that the whole communication link is interrupted due to the communication abnormality of a single driving circuit in the prior art, and the reliability of the driving circuit group is effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0043] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related art, the drawings needed to be used in the description of the embodiments of the present application or the related art will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other related drawings can be obtained by those skilled in the art without creative labor.

[0044] Figure 1 The structure schematic diagram of the driving circuit group in an embodiment;

[0045] Figure 2 The structure schematic diagram of the LED lamp string in an embodiment;

[0046] Figure 3 The structure schematic diagram of the LED lamp string in a specific embodiment.

[0047] Explanation of reference signs:

[0048] 100, driving circuit group; 110, driving circuit. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical scheme and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not to limit the present application.

[0050] In one embodiment, as shown in Figure 1 Figure 1 is a structural schematic diagram of a driving circuit group in an embodiment; the driving circuit group 100 includes 2N driving circuits 110; the driving circuit group 100 is distributed in 2 rows and N columns; the driving circuit 110 is provided with a first communication end L, a second communication end R, a first backup end M1 and a second backup end M2; N≥3, N is a natural number;

[0051] For each row of driving circuits 110, the second communication end R of each driving circuit 110 in the first driving circuit 110 to the Nth driving circuit 110 is connected with the first communication end L of the next level driving circuit 110, thereby forming a serial data channel corresponding to each row of driving circuits 110;

[0052] For each column of driving circuits 110 in the second column to the N-1th column, the second backup end M2 of the driving circuit 110 in the first row in each column of driving circuits 110 is connected with the first backup end M1 of the driving circuit 110 in the second row, thereby forming a first bidirectional backup data channel corresponding to each column of driving circuits 110;

[0053] The first bidirectional backup data channel is used to transmit a first backup communication signal to an abnormal driving circuit (not marked in the figure) in the case that there is a communication abnormality in any driving circuit 110 in the corresponding column of driving circuits 110.

[0054] Among them, the driving circuit 110 is used to connect with one or more LED lamp beads (not shown in the figure); the driving circuit 110 is used to realize driving control of the LED lamp beads according to the received communication signal. Among them, the communication signal is generated by the master control end according to the actual display control requirement, which is not specifically limited here.

[0055] Among them, the first communication end L, the second communication end R, the first backup end M1 and the second backup end M2 of the driving circuit 110 all have bidirectional communication function; the bidirectional communication function means that the port can be used as input and output, which can be flexibly configured according to the actual communication requirement; it can be understood that at the same time, each port is only used to realize any one of input and output, so as to avoid data conflict problem.

[0056] ​It can be understood that, based on the bidirectional communication function, the need for additional dedicated input or output terminals can be effectively reduced, while allowing flexible switching of the communication direction to adapt to more complex communication modes, effectively improving the flexibility and adaptability of the communication of the drive circuit group 100.

[0057] The serial data channel corresponds to the main communication link of the drive circuit group 100, and is used to realize serial transmission of signals between the respective drive circuits 110 in the row. It can be understood that the drive circuit group 100 includes two serial data channels, i.e., the first row of drive circuits 110 corresponds to one serial data channel, and the second row of drive circuits 110 corresponds to one serial data channel.

[0058] It should be noted that, in the normal communication process, the drive circuit group 100 relies on the serial data channel to realize the communication function, i.e., based on the first communication end L and the second communication end R of each drive circuit 110 to realize the communication function. Only in the case of communication abnormality of a certain drive circuit 110, the corresponding abnormal drive circuit will automatically switch to the first backup end M1 or the second backup end M2, so as to receive the first backup communication signal through the first bidirectional backup data channel corresponding to the abnormal drive circuit, and realize rapid response to the communication abnormality.

[0059] The first bidirectional backup data channel is used to transmit the first backup communication signal to the abnormal drive circuit in the case of communication abnormality of any drive circuit 110 in the corresponding column of drive circuits 110. The abnormal drive circuit refers to the drive circuit 110 in the corresponding column of drive circuits 110 that has a communication abnormality.

[0060] The first backup communication signal is derived from the communication signal output by the backup end of the normal drive circuit in the corresponding column. It can be understood that the first backup communication signal can be the communication signal output by the second backup end M2 of the first row of drive circuits 110 in the corresponding column, or the communication signal output by the first backup end M1 of the second row of drive circuits 110 in the corresponding column. The first backup communication signal needs to be determined according to the actual abnormality of the drive circuit 110 in the corresponding column, which is not limited here.

[0061] It should be noted that the communication abnormality of the drive circuit 110 can be caused by various factors, which are not limited here, for example, output failure of the previous drive circuit 110, line breakage, poor contact, etc., which causes the drive circuit 110 to be unable to correctly receive the expected communication signal through the serial data channel.

[0062] In an exemplary embodiment, the drive circuit group 100 includes a first bidirectional backup data channel and a second bidirectional backup data channel. Figure 1Taking an example, the driving circuit group 100 includes 2N driving circuits 110; the driving circuit group 100 is arranged in 2 rows and N columns, where N≥3 and N is a natural number; the first row of N driving circuits 110 are driving circuits 1_1 to 1_N respectively, and the second row of N driving circuits 110 are driving circuits 2_1 to 2_N respectively. Taking the first row of driving circuits 110 as an example, the second communication terminal R of driving circuit 1_1 is connected to the first communication terminal L of the next stage driving circuit 1_2, the second communication terminal R of driving circuit 1_2 is connected to the first communication terminal L of the next stage driving circuit 1_3 (not shown in the figure), and so on, forming the serial data channel corresponding to the first row of driving circuits 110; similarly, the serial data channel corresponding to the second row of driving circuits 110 can be obtained according to the above implementation method, and the specific process will not be repeated here.

[0063] Furthermore, for the driving circuits 110 of columns 2 to N-1, taking the driving circuit 110 of column 2 as an example, the second spare terminal M2 of the driving circuit 1_2 of the first row is connected to the first spare terminal M1 of the driving circuit 2_2 of the second row to form the first bidirectional spare data channel corresponding to the driving circuit 110 of column 2. Similarly, the first bidirectional spare data channel corresponding to each of the driving circuits 110 of columns 3 to N-1 can be determined according to the above implementation method.

[0064] Furthermore, with Figure 1 Taking the second column of the drive circuit 110 as an example, when drive circuit 1_2 experiences a communication anomaly, i.e., when drive circuit 1_2 cannot correctly receive communication signals through the serial data channel, it can receive the first backup communication signal transmitted from the first backup terminal M1 of drive circuit 2_2 to drive circuit 1_2 (i.e., the abnormal drive circuit) through the first bidirectional backup data channel corresponding to the second column of the drive circuit 110, so that drive circuit 1_2 can continue to communicate based on the first backup communication signal. Similarly, when drive circuit 2_2 experiences a communication anomaly, it can receive the first backup communication signal transmitted from the second backup terminal M2 of drive circuit 1_2 to drive circuit 2_2 through the first bidirectional backup data channel corresponding to the second column of the drive circuit 110, so that drive circuit 2_2 can continue to communicate based on the first backup communication signal.

[0065] It is understood that the response principle of the drive circuits 110 of columns 3 to N-1 in response to communication abnormalities is the same as that of the drive circuit 110 of column 2 in response to communication abnormalities described in the above embodiment, and will not be repeated here.

[0066] It should be noted that the second backup end M2 of the first driving circuit 110 in the first row, the second backup end M2 of the Nth driving circuit 110 in the first row, the first backup end M1 of the first driving circuit 110 in the second row, and the first backup end M2 of the Nth driving circuit 110 in the second row are used to realize the communication connection between the driving circuit groups 100, and the specific connection relationship will be described in detail below, which will not be described here.

[0067] In this embodiment, based on the serial data channel corresponding to each row of driving circuits 110, the serial transmission of data between each row of driving circuits 110 can be ensured, which facilitates effective management of data flow; based on the first bidirectional backup data channel, in the case that any driving circuit 110 in the corresponding column of driving circuits 110 has a communication abnormality, a first backup communication signal can be transmitted to the abnormal driving circuit, so as to ensure that the abnormal driving circuit can timely recover the communication function, and the normal work of the subsequent driving circuit 110 is ensured, thereby avoiding the problem that the entire communication link is interrupted due to the communication abnormality of a single driving circuit in the prior art, and the reliability of the driving circuit group 100 is effectively improved.

[0068] In one embodiment, referring to Figure 1 , the driving circuit 110 further comprises a first power supply end V1 and a second power supply end V2;

[0069] The first power supply end V1 of the first driving circuit 110 in each row is used to connect a first external power supply end;

[0070] The second power supply end V2 of the Nth driving circuit 110 in each row is used to connect a second external power supply end;

[0071] For each driving circuit 110 in the first driving circuit 110 to the N-1th driving circuit 110 in each row, the second power supply end V2 of each driving circuit 110 is connected with the first power supply end V1 of the next stage driving circuit 110;

[0072] For each column of driving circuits 110 from the first column to the N-1th column, the second power supply end V2 of the driving circuit 110 in the first row in each column is connected with the second power supply end V2 of the driving circuit 110 in the second row; or, for each column of driving circuits 110 from the second column to the Nth column, the first power supply end V1 of the driving circuit 110 in the first row in each column is connected with the first power supply end V1 of the driving circuit 110 in the second row.

[0073] The voltage of the first external power supply end and the voltage of the second external power supply end need to be set according to actual needs, and are not specifically limited here. For example, when the voltage of the first external power supply end is greater than the voltage of the second external power supply end, the first external power supply end is high, and the second external power supply end is low. When the voltage of the first external power supply end is less than the voltage of the second external power supply end, the second external power supply end is high, and the first external power supply end is low. The high level can be but is not limited to being realized by connecting a direct current power supply. The low level can be but is not limited to being realized by grounding.

[0074] It can be understood that the first external power supply end and the second external power supply end are used to provide a power supply voltage for the driving circuit group 100.

[0075] In this embodiment, based on the first external power supply end and the second external power supply end, a corresponding power supply voltage can be provided for each driving circuit 110 in the driving circuit group 100, ensuring that each driving circuit 110 can work normally, laying a foundation for improving the reliability of the driving circuit 110. At the same time, for each column of driving circuits 110 in the first column to the N-1th column of driving circuits 110, the second power supply end V2 of the driving circuit 110 located in the first row in each column of driving circuits 110 is connected with the second power supply end V2 of the driving circuit 110 located in the second row, which can ensure that the upper and lower driving circuits 110 in each column have the same potential, and further ensure the reliability and stability of communication of the upper and lower driving circuits 110 in each column.

[0076] In one embodiment, the driving circuit group 100 is provided with a first communication port group and a second communication port group; the first communication port group includes a first I / O end and a second I / O end; the second communication port group includes a third I / O end and a fourth I / O end;

[0077] The first I / O end is the first communication end L of the first driving circuit 110 in the first row;

[0078] The second I / O end is the first communication end L of the first driving circuit 110 in the second row;

[0079] The third I / O end is the second communication end R of the Nth driving circuit 110 in the first row;

[0080] The fourth I / O end is the second communication end R of the Nth driving circuit 110 in the second row.

[0081] Preferably, the driving circuit group 100 is further provided with a first backup port group and a second backup port group; the first backup port group includes a first backup I / O end and a second backup I / O end; the second backup port group includes a third backup I / O end and a fourth backup I / O end;

[0082] The first spare I / O terminal is the second spare terminal M2 of the first drive circuit 110 in the first row;

[0083] The second spare I / O terminal is the second spare terminal M2 of the Nth drive circuit 110 in the first row;

[0084] The third spare I / O terminal is the first spare terminal M1 of the first drive circuit 110 in the second row;

[0085] The fourth spare I / O terminal is the first spare terminal M1 of the Nth drive circuit 110 in the second row.

[0086] For example, with Figure 1 Taking this example, let's denote the first I / O terminal as I / O1, the second I / O terminal as I / O2, the third I / O terminal as I / O5, and the fourth I / O terminal as I / O6. The first I / O terminal I / O1 is the first communication terminal L of the driver circuit 1_1; the second I / O terminal I / O2 is the first communication terminal L of the driver circuit 2_1; the third I / O terminal I / O5 is the second communication terminal R of the driver circuit 1_N; and the fourth I / O terminal I / O6 is the second communication terminal R of the driver circuit 1_N.

[0087] Furthermore, the first spare I / O terminal is designated as I / O7, the second spare I / O terminal as I / O8, the third spare I / O terminal as I / O3, and the fourth spare I / O terminal as I / O4; the first spare I / O terminal I / O7 is the second spare terminal M2 of the drive circuit 1_1; the second spare I / O terminal I / O8 is the second spare terminal M2 of the drive circuit 1_N; the third spare I / O terminal I / O3 is the first spare terminal M1 of the drive circuit 2_1; and the fourth spare I / O terminal I / O4 is the first spare terminal M1 of the drive circuit 2_N.

[0088] It should be noted that the first I / O terminal, the second I / O terminal, the third I / O terminal, the fourth I / O terminal, the first backup I / O terminal, the second backup I / O terminal, the third backup I / O terminal, and the fourth backup I / O terminal all have bidirectional communication capabilities and can be flexibly configured according to actual communication needs.

[0089] In this embodiment, the ports of the drive circuit group 100 are standardized to simplify the expansion process of the drive circuit group 100 and improve the flexibility of the expansion of the drive circuit group 100.

[0090] In one embodiment, such as Figure 2 As shown, Figure 2Fig. 1 is a schematic diagram of a structure of an LED lamp string in one embodiment; the LED lamp string comprises M driving circuit groups 100 according to any one of the embodiments described above; the driving circuit group 100 is provided with a first communication port group, a second communication port group, a first backup port group and a second backup port group; M≥2; M is a natural number;

[0091] For each of the first to M-1 driving circuit groups 100, the second communication port group of each driving circuit group 100 is connected to the first communication port group of the next level driving circuit group 100 one by one, forming a multi-channel data channel;

[0092] For each of the first to M-1 driving circuit groups 100, the first backup port group of each driving circuit group 100 is connected to the second backup port group of the next level driving circuit group 100 one by one, forming a second bidirectional backup data channel corresponding to each driving circuit group 100 and the next level driving circuit group 100;

[0093] The second bidirectional backup data channel is used to transmit a second backup communication signal to an abnormal driving circuit group (not marked in the figure) in the case of communication abnormality in any of the corresponding two driving circuit groups 100.

[0094] Among them, the first communication port group includes a first I / O end I / O1 and a second I / O end I / O2; the second communication port group includes a third I / O end I / O5 and a fourth I / O end I / O6.

[0095] It should be understood that, according to Figure 1 It can be seen that the communication line connection relationship between the driving circuits 110 in the driving circuit group 100 as a whole presents a central symmetric structure, and since the first communication end L, the second communication end R, the first backup end M1 and the second backup end M2 of the driving circuit 110 all have bidirectional communication function, the driving circuit group 100 can realize bidirectional communication, that is, the first I / O end I / O1, the second I / O end I / O2, the third I / O end I / O5 and the fourth I / O end I / O6 of the driving circuit group 100 all have bidirectional communication function, each port can be used as input or output, which needs to be flexibly configured according to actual communication demand, which is not specifically limited here. For example, when the first I / O end I / O1 and the second I / O end I / O2 are used as input, the third I / O end I / O5 and the fourth I / O end I / O6 are used as output; when the third I / O end I / O5 and the fourth I / O end I / O6 are used as input, the first I / O end I / O1 and the second I / O end I / O2 are used as output.

[0096] The multi-path data channel refers to a plurality of main communication links corresponding to the LED lamp string, and is used for realizing serial transmission of signals between the driving circuit groups 100 in the LED lamp string.

[0097] In an exemplary embodiment, the multi-path data channel includes a first data transmission channel and a second data transmission channel. Specifically, for each of the first to M-1 driving circuit groups 100, the third I / O end I / O5 of each driving circuit group 100 is connected to the first I / O end I / O1 of the next-stage driving circuit group 100, thereby constituting the first data transmission channel; for each of the first to M-1 driving circuit groups 100, the fourth I / O end I / O6 of each driving circuit group 100 is connected to the second I / O end I / O2 of the next-stage driving circuit group 100, thereby constituting the second data transmission channel.

[0098] The first backup port group includes a first backup I / O end I / O7 and a second backup I / O end I / O8, and the second backup port group includes a third backup I / O end I / O3 and a fourth backup I / O end I / O4.

[0099] It should be noted that the first backup I / O end I / O7, the second backup I / O end I / O8, the third backup I / O end I / O3, and the fourth backup I / O end I / O4 all have bidirectional communication function, i.e., can be used as input or output, and need to be flexibly configured according to actual communication requirements, which is not limited here.

[0100] The second bidirectional backup data channel is used for transmitting a second backup communication signal to an abnormal driving circuit group in the case that there is a communication abnormality in any one of the corresponding two driving circuit groups 100. The abnormal driving circuit group refers to the driving circuit group 100 having a communication abnormality in the corresponding two driving circuit groups 100. The second backup communication signal is derived from the communication signal output by the backup I / O end corresponding to the normal driving circuit in the corresponding two driving circuit groups 100. It can be understood that the second bidirectional backup data channel is used for realizing bidirectional backup between the corresponding two driving circuit groups 100, so as to ensure that the abnormal driving circuit group can quickly recover the communication function.

[0101] It should be noted that the communication abnormality of the driving circuit group 100 can be caused by various factors, which are not limited here, for example, output failure of the previous-stage driving circuit group 100, line breakage, poor contact, etc., thereby causing the driving circuit group 100 to fail to correctly receive the expected communication signal through the corresponding data transmission channel in the multi-path data channel.

[0102] In an exemplary embodiment, the second bidirectional backup data channel comprises a first backup channel and a second backup channel; specifically, for each of the first to (M-1)th drive circuit groups 100, the first backup I / O terminal I / O7 of each drive circuit group 100 is connected to the third backup I / O terminal I / O3 of the next-stage drive circuit group 100, forming a first backup channel corresponding to each drive circuit group 100 and the next-stage drive circuit group 100; for each of the first to (M-1)th drive circuit groups 100, the second backup I / O terminal I / O8 of each drive circuit group 100 is connected to the fourth backup I / O terminal I / O4 of the next-stage drive circuit group 100, forming a second backup channel corresponding to each drive circuit group 100 and the next-stage drive circuit group 100.

[0103] Exemplarily, in combination with Figure 1 and Figure 2 , the two drive circuit groups 100 corresponding to the second bidirectional backup data channel are respectively denoted as the front-stage drive circuit group 100 and the rear-stage drive circuit group 100 in the direction from left to right along the row; assuming that the first I / O terminal I / O1 of the front-stage drive circuit group 100 has a communication abnormality when the front-stage drive circuit group 100 communicates in the direction from left to right along the row, at this time, the second backup communication signal transmitted by the third backup I / O terminal I / O3 of the rear-stage drive circuit group 100 to the first backup I / O terminal I / O7 of the front-stage drive circuit group 100 can be received through the first backup channel, so that the front-stage drive circuit group 100 can continue to communicate according to the second backup communication signal.

[0104] Similarly, assuming that the fourth I / O terminal I / O6 of the rear-stage drive circuit group 100 has a communication abnormality when the rear-stage drive circuit group 100 communicates in the direction from right to left along the row, at this time, the second backup communication signal transmitted by the second backup I / O terminal I / O8 of the front-stage drive circuit group 100 to the fourth backup I / O terminal I / O4 of the rear-stage drive circuit group 100 can be received through the second backup channel, so that the rear-stage drive circuit group 100 can continue to communicate according to the second backup communication signal.

[0105] It should be noted that the above two cases are only used as examples for illustration in the present embodiment, and are not used to limit the present application; in actual application, the corresponding second backup communication signal needs to be automatically identified and acquired in combination with the specific communication mode and the actual communication abnormality, so that the abnormal drive circuit group can recover the normal communication function according to the second backup communication signal.

[0106] In the embodiment, based on the multiple data channels, the serial transmission of data between the drive circuit groups can be ensured, and the data flow can be effectively managed; based on the second bidirectional backup data channel, in the case that communication abnormality exists in any one of the two drive circuit groups 100, the second backup communication signal can be transmitted to the abnormal drive circuit group, the communication function of the abnormal drive circuit group can be restored in time, the normal operation of the subsequent drive circuit groups 100 is ensured, and the problem that the communication link is interrupted due to the communication abnormality of a single drive circuit group in the prior art is avoided, and the reliability of the LED lamp string is effectively improved. Meanwhile, based on the bidirectional communication function of the I / O ports of the drive circuit groups 100, the drive circuit groups 100 are allowed to flexibly switch the communication direction to adapt to more complex communication modes, and the flexibility and adaptability of the LED lamp string communication are effectively improved.

[0107] In one embodiment, the drive circuit group 100 is also provided with a first power supply port group and a second power supply port group;

[0108] The first power supply port groups of the M drive circuit groups 100 are connected in parallel to the first external power supply end;

[0109] The second power supply port groups of the M drive circuit groups 100 are connected in parallel to the second external power supply end.

[0110] The first power supply port group includes a first power supply end VIN1 and a second power supply end VIN2; and the second power supply port group includes a third power supply end VIN3 and a fourth power supply end VIN4.

[0111] Specifically, the first power supply ends VIN1 of the M drive circuit groups 100 are connected in parallel to the first external power supply end; the second power supply ends VIN2 of the M drive circuit groups 100 are connected in parallel to the first external power supply end; the third power supply ends VIN3 of the M drive circuit groups 100 are connected in parallel to the second external power supply end; and the fourth power supply ends VIN4 of the M drive circuit groups 100 are connected in parallel to the second external power supply end.

[0112] The voltage of the first external power supply end and the voltage of the second external power supply end need to be set according to actual needs, which are not limited here; for example, when the voltage of the first external power supply end is greater than the voltage of the second external power supply end, the first external power supply end is high, and the second external power supply end is low; when the voltage of the first external power supply end is less than the voltage of the second external power supply end, the second external power supply end is high, and the first external power supply end is low. The high level can be but is not limited to realized by connecting a direct current power supply; and the low level can be but is not limited to realized by grounding. It can be understood that the first external power supply end and the second external power supply end are used to provide power supply voltage for the drive circuit groups 100 in the LED lamp string.

[0113] In the embodiment, based on the first external power supply end and the second external power supply end, the corresponding power supply voltage can be provided for each driving circuit group 100 in the LED lamp string, and it is ensured that each driving circuit group 100 can work normally, thereby laying a foundation for improving the reliability of the LED lamp string.

[0114] In one specific embodiment, as shown in Figure 3 Figure 3 is a structural schematic diagram of the LED lamp string in one specific embodiment. The LED lamp string includes three driving circuit groups 100 according to any one of the above embodiments; each driving circuit group 100 includes 2x4 driving circuits 110. The connection mode between the driving circuits 110 in the LED lamp string in the embodiment and the connection mode between the driving circuit groups 100 are the same as the connection mode principles described in the above embodiments, and will not be described here.

[0115] It can be understood that the LED lamp string in the embodiment can effectively avoid the problem of interruption of the entire communication link caused by communication abnormalities of part of the driving circuits 110 or part of the driving circuit groups 100, and effectively improve the reliability of the LED lamp string, by setting different bidirectional backup data channels between the driving circuits 110 and between the driving circuit groups 100.

[0116] In one embodiment, an LED display system is provided, and the LED display system includes a master control end and at least one LED lamp string according to any one of the above embodiments.

[0117] The master control end is in communication connection with the LED lamp string.

[0118] The master control end is configured to send corresponding communication signals to the LED lamp string. The master control end can be, but is not limited to, a control chip, a control device, etc., and will not be specifically limited here.

[0119] The LED display system in the embodiment can effectively avoid the problem of interruption of the entire communication link caused by communication abnormalities of a certain driving circuit or driving circuit group in the prior art, ensures that the communication link can still be connected when a problem occurs locally, and further ensures the normal work of subsequent driving circuits or driving circuit groups, reduces the risk of performance degradation of the overall LED display system caused by communication abnormalities of a single driving circuit or driving circuit group, and effectively improves the reliability of the LED display system.

[0120] Unless otherwise defined, 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 in the description herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0121] ​It can be understood that the terms "first", "second", and the like used in the present application can be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish a first element from another element. For example, without departing from the scope of the present application, a first resistor can be referred to as a second resistor, and similarly, a second resistor can be referred to as a first resistor. Both the first resistor and the second resistor are resistors, but they are not the same resistor.

[0122] It can be understood that "connection" in the following embodiments, if the circuits, modules, units, etc. connected to each other have the transmission of electrical signals or data, should be understood as "electrically connected", "communicatively connected", etc.

[0123] It can be understood that "at least one" means one or more, and "multiple" means two or more. "At least part of the element" means part or all of the element.

[0124] As used herein, the singular forms "a", "an" and "the" can include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "comprise / comprising" or "have / having" or the like specifies the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but does not exclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

[0125] In the description of the present specification, the description of the terms "some embodiments", "other embodiments", and the like means that the specific features, structures, materials or characteristics described in connection with the embodiments or examples are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example.

[0126] The technical features of the above-described embodiments can be combined in any combination. In order to make the description simple, all possible combinations of the technical features in the above-described embodiments are not described, but as long as the combination of the technical features does not exist, it should be considered as the scope of the present specification.

[0127] The above-described embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it should not be understood as limiting the scope of the present application. It should be noted that for those skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A drive circuit set, characterized by, The driving circuit group comprises 2N driving circuits; the driving circuit group is arranged in 2 rows and N columns; the driving circuit is provided with a first communication end, a second communication end, a first backup end and a second backup end; For each row of the driving circuit, the second communication end of each of the first to the Nth driving circuit is connected with the first communication end of the next stage driving circuit, thereby forming a serial data channel corresponding to each row of the driving circuit; For each column of the driving circuit, the second backup end of the driving circuit in the first row is connected with the first backup end of the driving circuit in the second row, thereby forming a first bidirectional backup data channel corresponding to each column of the driving circuit; The first bidirectional backup data channel is used for transmitting a first backup communication signal to an abnormal driving circuit in the case that there is a communication abnormality in any driving circuit in the corresponding column.

2. The drive circuit set according to claim 1, characterized in that, The driving circuit is further provided with a first power supply end and a second power supply end; The first power supply end of the first driving circuit in each row is used for connecting a first external power supply end; The second power supply end of the Nth driving circuit in each row is used for connecting a second external power supply end; For each of the first to the N-1th driving circuit in each row, the second power supply end of each of the driving circuit is connected with the first power supply end of the next stage driving circuit; For each column of the driving circuit, the second power supply end of the driving circuit in the first row is connected with the second power supply end of the driving circuit in the second row.

3. The driving circuit group according to claim 1, wherein The first communication end, the second communication end, the first backup end and the second backup end all have bidirectional communication function.

4. The drive circuit set of claim 1, wherein The driving circuit group is provided with a first communication port group and a second communication port group; the first communication port group comprises a first I / O end and a second I / O end; the second communication port group comprises a third I / O end and a fourth I / O end; The first I / O end is the first communication end of the first driving circuit in the first row; The second I / O end is the first communication end of the first driving circuit in the second row; The third I / O end is the second communication end of the Nth driving circuit in the first row; The fourth I / O end is the second communication end of the Nth driving circuit in the second row.

5. The drive circuit set of claim 1, wherein The driving circuit group is further provided with a first backup port group and a second backup port group; the first backup port group comprises a first backup I / O end and a second backup I / O end; the second backup port group comprises a third backup I / O end and a fourth backup I / O end; The first backup I / O end is the second backup end of the first driving circuit in the first row; The second backup I / O end is the second backup end of the Nth driving circuit in the first row; The third backup I / O end is the first backup end of the first driving circuit in the second row; The fourth spare I / O terminal is a first spare terminal of the Nth driving circuit in the second row.

6. An LED light string, characterized in that The LED lamp string comprises M groups of driving circuits according to any one of claims 1 to 5; the driving circuit groups are provided with a first communication port group, a second communication port group, a first spare port group and a second spare port group; M≥2; For each of the first to M-1th driving circuit groups, the second communication port group of each driving circuit group is connected to the first communication port group of the next level driving circuit group one by one, forming a plurality of data channels. For each of the first to M-1th driving circuit groups, the first spare port group of each driving circuit group is connected to the second spare port group of the next level driving circuit group one by one, forming a second bidirectional spare data channel corresponding to each driving circuit group and the next level driving circuit group. The second bidirectional spare data channel is used to transmit a second spare communication signal to an abnormal driving circuit group in the case that any driving circuit group in the corresponding two driving circuit groups has a communication abnormality.

7. The LED light string of claim 6, wherein, The first communication port group comprises a first I / O terminal and a second I / O terminal; the second communication port group comprises a third I / O terminal and a fourth I / O terminal; the plurality of data channels comprises a first data transmission channel and a second data transmission channel; For each of the first to M-1th driving circuit groups, the third I / O terminal of each driving circuit group is connected to the first I / O terminal of the next level driving circuit group, forming a first data transmission channel. For each of the first to M-1th driving circuit groups, the fourth I / O terminal of each driving circuit group is connected to the second I / O terminal of the next level driving circuit group, forming a second data transmission channel.

8. The LED light string of claim 6, wherein, The first spare port group comprises a first spare I / O terminal and a second spare I / O terminal; the second spare port group comprises a third spare I / O terminal and a fourth spare I / O terminal; the second bidirectional spare data channel comprises a first spare channel and a second spare channel; For each of the first to M-1th driving circuit groups, the first spare I / O terminal of each driving circuit group is connected to the third spare I / O terminal of the next level driving circuit group, forming a first spare channel corresponding to each driving circuit group and the next level driving circuit group; For each of the first to M-1th driving circuit groups, the second spare I / O terminal of each driving circuit group is connected to the fourth spare I / O terminal of the next level driving circuit group, forming a second spare channel corresponding to each driving circuit group and the next level driving circuit group.

9. The LED lamp string according to claim 7, wherein The first I / O terminal, the second I / O terminal, the third I / O terminal and the fourth I / O terminal all have bidirectional communication function.

10. The LED lamp string according to claim 8, wherein The first, second, third and fourth spare I / O terminals all have bidirectional communication function.

11. The LED lamp string of claim 6, wherein, The driving circuit groups are also provided with a first power supply port group and a second power supply port group; The first power supply port groups of the M driving circuit groups are connected in parallel to a first external power supply end; The second power supply port groups of the M driving circuit groups are connected in parallel to a second external power supply end.

12. An LED display system, comprising: The LED display system comprises a master control end and at least one LED lamp string as claimed in any one of claims 6 to 11; The master control end is in communication connection with the LED lamp string.

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