Signal transmission breakpoint protection method and circuit, display panel and display device

Abstract

The embodiment of the invention relates to a signal transmission breakpoint protection method and circuit, a display panel and a display device, and the method comprises the steps: transmitting a first addressing signal and a second addressing signal to at least two constant-current driving modules which are connected in series according to a preset first signal transmission direction and a preset second signal transmission direction, receiving a returned first addressing feedback data set and a returned second addressing feedback data set; determining breakpoint positions in the at least two constant current driving modules based on the first addressing feedback data set and the second addressing feedback data set; and sending a first group of constant-current driving data to the first group of constant-current driving modules according to the breakpoint position and the first signal transmission direction, and sending a second group of constant-current driving data to the second group of constant-current driving modules according to the second signal transmission direction. According to the embodiment of the invention, signal transmission interruption caused by breakpoints can be avoided, the failure rate of equipment operation is reduced, and the stability of equipment operation is improved.

Description

Technical Field

[0001] The present application relates to the technical field of display panels, and in particular to a signal transmission breakpoint protection method, circuit, display panel and display device. Background Art

[0002] At present, in display panels using technologies such as Mini-LED, a single-line bidirectional communication method is usually used to drive LEDs (Light-Emitting Diodes) to emit light. There are two main single-line communication methods: one is starting from the constant current control IC (Integrated Circuit, chip), the signal passes through each constant current driver IC in turn, and then returns to the constant current control IC. The disadvantage is that it can only communicate in one direction. If there is a disconnection in the communication, the subsequent driver ICs cannot work properly; the other is starting from the constant current control IC, the signal passes through each constant current driver IC in turn, and then passes through each constant current driver IC in reverse from the last constant current driver IC, and returns to the constant current driver IC. Although bidirectional communication is possible, saving a signal line, it still cannot work properly after a breakpoint occurs.

[0003] Therefore, how to maintain normal signal transmission when a breakpoint occurs in the constant current driver IC connected in series is an urgent problem to be solved. Summary of the invention

[0004] In view of this, in order to solve some or all of the above-mentioned technical problems, the embodiments of the present application provide a signal transmission breakpoint protection method, circuit, display panel and display device.

[0005] In a first aspect, an embodiment of the present application provides a signal transmission breakpoint protection method, the method comprising: sending a first addressing signal to at least two constant current driving modules connected in series according to a preset first signal transmission direction, and receiving a first addressing feedback data set returned by at least two constant current driving modules; sending a second addressing signal to at least two constant current driving modules according to a preset second signal transmission direction, and receiving a second addressing feedback data set returned by at least two constant current driving modules; determining a breakpoint position in at least two constant current driving modules based on the first addressing feedback data set and the second addressing feedback data set; determining, from at least two constant current driving modules, a first group of constant current driving modules and a second group of constant current driving modules disconnected by the breakpoint position according to the breakpoint position; sending a first group of constant current driving data to the first group of constant current driving modules according to the first signal transmission direction, and sending a second group of constant current driving data to the second group of constant current driving modules according to the second signal transmission direction.

[0006] In one possible implementation, based on a first addressing feedback data set and a second addressing feedback data set, determining breakpoint positions in at least two constant current driving modules includes: if the first addressing feedback data set and the second addressing feedback data set are different from a preset data set, determining that there are breakpoints in at least two constant current driving modules; determining, from among the constant current driving modules corresponding to the first addressing feedback data set, that the last constant current driving module that receives the first addressing signal is the first target constant current driving module, and, from among the constant current driving modules corresponding to the second addressing feedback data set, determining that the last constant current driving module that receives the second addressing signal is the second target constant current driving module; and determining the position between the first target constant current driving module and the second target constant current driving module as the breakpoint position.

[0007] In one possible implementation, according to a preset first signal transmission direction, a first addressing signal is sent to at least two constant current driving modules connected in series, and a first addressing feedback data set returned by at least two constant current driving modules is received, including: sending a first addressing signal to a first-stage constant current driving module among the at least two constant current driving modules, and receiving a first addressing feedback data set from the first-stage constant current driving module; according to a preset second signal transmission direction, a second addressing signal is sent to at least two constant current driving modules, and a second addressing feedback data set returned by at least two constant current driving modules is received, including: sending a second addressing signal to a last-stage constant current driving module among the at least two constant current driving modules, and receiving a second addressing feedback data set from the last-stage constant current driving module.

[0008] In one possible implementation, a first group of constant current drive data is sent to a first group of constant current drive modules according to a first signal transmission direction, and a second group of constant current drive data is sent to a second group of constant current drive modules according to a second signal transmission direction, including: sending the first group of constant current drive data to a first-level constant current drive module according to the address of each constant current drive module in the first group of constant current drive modules, so that each constant current drive module in the first group of constant current drive modules sequentially receives the corresponding constant current drive data in a series manner; sending the second group of constant current drive data to a last-level constant current drive module according to the address of each constant current drive module in the second group of constant current drive modules, so that each constant current drive module in the second group of constant current drive modules sequentially receives the corresponding constant current drive data in a series manner.

[0009] In the second aspect, an embodiment of the present application provides a signal transmission breakpoint protection circuit, which includes: a constant current control module and at least two constant current driving modules connected in series, the constant current control module includes a first data transmission end and a second data transmission end, the first data transmission end is connected to the first-level constant current driving module among the at least two constant current driving modules, and the second data transmission end is connected to the last-level constant current driving module among the at least two constant current driving modules; the constant current control module is used to execute the method described in the first aspect above.

[0010] In one possible embodiment, the constant current control module includes a controller and a signal switching unit, the controller is connected to the signal switching unit, and the signal switching unit includes a first data transmission end and a second data transmission end; the controller is used to send a first control signal to the signal switching unit; the signal switching unit is used to connect the first data transmission end with the controller according to the first control signal, so that the controller sends a first addressing signal to the first-level constant current driving module, receives a first addressing feedback data set from the first-level constant current driving module, and sends a first group of constant current driving data to the first group of constant current driving modules; the controller is also used to send a second control signal to the signal switching unit; the signal switching unit is also used to connect the second data transmission end with the controller according to the second control signal, so that the controller sends a second addressing signal to the last-level constant current driving module, receives a second addressing feedback data set from the last-level constant current driving module, and sends a second group of constant current driving data to the second group of constant current driving modules.

[0011] In a possible implementation, the signal switching unit includes a first group of controlled switches and a second group of controlled switches, the control ends of the first group of controlled switches and the second group of controlled switches are both connected to the control signal output end of the controller, the two signal transmission ends of the first group of controlled switches are respectively connected to the controller and the first signal transmission end, and the two signal transmission ends of the second group of controlled switches are respectively connected to the controller and the second signal transmission end.

[0012] In a possible implementation, the signal switching unit further includes a buffer, the first group of controlled switches includes a first switch unit and a second switch unit, the second group of controlled switches includes a third switch unit and a fourth switch unit, the first switch unit, the second switch unit, the third switch unit and the fourth switch unit are all connected to the control signal output end of the controller; the buffer is arranged between the first switch unit and the second switch unit, and between the third switch unit and the fourth switch unit.

[0013] In a third aspect, an embodiment of the present application provides a display panel, which includes: the signal transmission breakpoint protection circuit and the light-emitting unit array described in the second aspect above, and each constant current driving module in the signal transmission breakpoint protection circuit is connected to at least one light-emitting unit included in the light-emitting unit array.

[0014] In a fourth aspect, an embodiment of the present application provides a display device, comprising: a display panel as described in the third aspect above.

[0015] The signal transmission breakpoint protection method, circuit, display panel and display device provided in the embodiment of the present application are respectively sent to multiple constant current drive modules in series according to the first signal transmission direction and the second transmission direction, and the first addressing feedback data set and the second addressing feedback data set returned by each constant current drive module are received, and then the breakpoint position in each constant current drive module is determined based on the first addressing feedback data set and the second addressing feedback data set, and the first group of constant current drive modules and the second group of constant current drive modules are determined according to the breakpoint position, and finally, the constant current drive data is sent to the first group of constant current drive modules and the second group of constant current drive modules respectively according to different signal transmission directions. The embodiment of the present application realizes that when a breakpoint occurs in the constant current drive module in series, the signal can still be transmitted between the constant current drive modules, avoiding the interruption of signal transmission caused by the breakpoint, reducing the failure rate of the equipment operation, and improving the stability of the equipment operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0018] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0019] Figure 1 A schematic diagram of a flow chart of a signal transmission breakpoint protection method provided in an embodiment of the present application;

[0020] Figure 2 A schematic diagram of a flow chart of another signal transmission breakpoint protection method provided in an embodiment of the present application;

[0021] Figure 3 A flowchart of another signal transmission breakpoint protection method provided in an embodiment of the present application;

[0022] Figure 4A flowchart of another signal transmission breakpoint protection method provided in an embodiment of the present application;

[0023] Figure 5 A schematic diagram of the structure of a signal transmission breakpoint protection circuit provided in an embodiment of the present application;

[0024] Figure 6 A schematic diagram of the structure of another signal transmission breakpoint protection circuit provided in an embodiment of the present application;

[0025] Figure 7 A schematic diagram of the structure of another signal transmission breakpoint protection circuit provided in an embodiment of the present application;

[0026] Figure 8 A schematic diagram of the structure of a signal switching unit provided in an embodiment of the present application;

[0027] Fig. 9 A schematic diagram of the structure of a signal transmission breakpoint protection device provided in an embodiment of the present application;

[0028] Fig.10 A schematic diagram of the structure of a display panel provided in an embodiment of the present application;

[0029] Fig.11 A schematic diagram of the structure of a display device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0030] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. It should be noted that unless otherwise specifically stated, the relative arrangement of the components and steps, the numerical expressions and the numerical values ​​described in these embodiments do not limit the scope of the present application.

[0031] Those skilled in the art will understand that the terms "first" and "second" in the embodiments of the present application are only used to distinguish between different steps, devices, modules and other objects, and do not represent any specific technical meanings, nor do they indicate the logical order between them.

[0032] It should also be understood that in this embodiment, “plurality” may refer to two or more than two, and “at least one” may refer to one, two or more than two.

[0033] It should also be understood that any component, data or structure mentioned in the embodiments of the present application can generally be understood as one or more, unless explicitly limited or otherwise indicated in the context.

[0034] In addition, the term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0035] It should also be understood that the description of the various embodiments in this application focuses on the differences between the various embodiments, and the same or similar aspects thereof can be referenced to each other, and for the sake of brevity, they will not be described one by one.

[0036] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present application, its application, or uses.

[0037] Technologies, circuits, and devices known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the above-mentioned technologies, circuits, and devices should be considered as part of the specification.

[0038] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0039] It should be noted that, in the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. To facilitate the understanding of the embodiments of the present application, the present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0040] In order to solve the technical problem of signal transmission interruption caused by breakpoints in the constant current drive modules connected in series in the prior art, the present application provides a signal transmission breakpoint protection method, which can transmit signals normally when a breakpoint occurs in the constant current drive modules connected in series, thereby avoiding equipment failure caused by the breakpoint.

[0041] Figure 1A flow chart of a signal transmission breakpoint protection method provided for an embodiment of the present application. This method can be applied to a display panel, and can also be applied to various electronic devices including constant current drive modules connected in series, such as LED display screens, LED light strips, etc. In addition, the execution subject of this method can be hardware or software. When the above-mentioned execution subject is hardware, the execution subject can be one or more of the above-mentioned electronic devices. For example, a single electronic device can execute this method, or a plurality of electronic devices can cooperate with each other to execute this method. When the above-mentioned execution subject is software, this method can be implemented as multiple software or software modules, or as a single software or software module. It is not specifically limited here.

[0042] like Figure 1 As shown, the method specifically includes:

[0043] Step 101: sending a first addressing signal to at least two constant current driving modules connected in series according to a preset first signal transmission direction, and receiving a first addressing feedback data set returned by the at least two constant current driving modules.

[0044] In some embodiments, each constant current drive module in at least two constant current drive modules is used to drive various electronic devices by outputting a constant current. For example, the constant current drive module can be a constant current drive IC for driving LEDs, which can drive the LED chips in the display panel. The above-mentioned at least two constant current drive modules are connected in series, that is, after a constant current drive module receives an input signal, the signal is sent to the next constant current drive module connected. For example, each constant current drive module can adopt a single-line two-way communication mode.

[0045] The first addressing signal is input into a constant current driving module, and the constant current driving module sends the first search signal to the next constant current driving module. Each constant current driving module receives the first addressing signal in turn according to the transmission mode of the serial signal, and returns the first addressing feedback data to the upper level constant current driving module. For example, at least two constant current driving modules include IC_1, IC_2, ... IC_N, and the first signal transmission direction is the direction from IC_1 to IC_N. After any constant current driving module receives the first addressing signal, it returns the first addressing feedback data in the direction opposite to the first signal transmission direction.

[0046] The first addressing signal is used to determine the position of each constant current driver module, that is, each constant current driver module corresponds to an address, and the first addressing signal includes the address. For example, after any constant current driver module receives the first addressing signal, if the received addressing signal is consistent with its own address, the addressing feedback data is returned to the upper level constant current driver module, and the first addressing signal is updated to the address of the next level constant current driver module (for example, the address plus 1). The addressing feedback data passes through each constant current driver module in turn, and finally returns to the electronic device that executes this method.

[0047] Step 102: sending a second addressing signal to at least two constant current driving modules according to a preset second signal transmission direction, and receiving a second addressing feedback data set returned by the at least two constant current driving modules.

[0048] In some embodiments, the second signal transmission direction is opposite to the first signal transmission direction. For example, if the first signal transmission direction is IC_1 to IC_N, the second signal transmission direction is IC_N to IC_1, that is, the electronic device first sends the second addressing signal to IC_N, and then transmits the second addressing signal in sequence through each constant current drive module in a serial signal transmission mode until it is sent to IC_1. After receiving the second addressing signal, each constant current drive module returns the second addressing feedback data in reverse to the electronic device that executes this method. The meaning of the second addressing signal and the second addressing feedback data is the same as the meaning of the first addressing signal and the first addressing feedback data mentioned above.

[0049] It should be noted that the execution order of step 101 and step 102 can be set arbitrarily. Figure 1 Step 101 and step 102 are connected by a dotted line.

[0050] Step 103: Determine breakpoint positions in at least two constant current driving modules based on the first addressing feedback data set and the second addressing feedback data set.

[0051] In some embodiments, if a circuit is broken between the constant current drive modules connected in series, the constant current drive module that receives the addressing signal last will automatically return the addressing feedback data, and the constant current drive module after the breakpoint will not return the addressing feedback data. Therefore, the first addressing feedback data set and the second addressing feedback data set can be compared with the preset correct feedback data, and the addressing feedback data where the error occurs can be found from the first addressing feedback data set and the second addressing feedback data set, and the breakpoint position can be determined according to the position of the constant current drive module corresponding to the erroneous addressing feedback data.

[0052] For example, if the first addressed feedback data set includes addressed feedback data sent by IC_1-IC_D, and the second addressed feedback data set includes addressed feedback data sent by IC_N-IC_D+1, then the position between IC_D and IC_D+1 is the breakpoint position.

[0053] Step 104 : determining, according to the breakpoint position, from at least two constant current driving modules, a first group of constant current driving modules and a second group of constant current driving modules that are disconnected by the breakpoint position.

[0054] In some embodiments, the first group of constant current drive modules and the second group of constant current drive modules are two groups of constant current drive modules divided by the breakpoint as the dividing point. For example, if the breakpoint is between IC_D and IC_D+1, then IC_1-IC_D is the first group of constant current drive modules, and IC_D+1-IC_N is the second group of constant current drive modules.

[0055] Step 105 , sending a first set of constant current driving data to a first set of constant current driving modules according to a first signal transmission direction, and sending a second set of constant current driving data to a second set of constant current driving modules according to a second signal transmission direction.

[0056] In some embodiments, the electronic device executing the present method can send constant current drive data twice according to the address of each constant current drive module. The first time, the constant current drive data is sent to the first group of constant current drive modules in the first signal transmission direction. For example, in the order of IC_1, IC_2, ... IC_D, the constant current drive data is sent to each constant current drive module in the first group of constant current drive modules in sequence. The second time, the constant current drive data is sent to the second group of constant current drive modules in the opposite direction. For example, in the order of IC_N, IC_N-1, ... IC_D+1, the constant current drive data is sent to each constant current drive module in the second group of constant current drive modules in sequence. The first group of constant current drive data and the second group of constant current drive data are combined into complete constant current drive data for driving each constant current drive module. After the constant current drive module receives the constant current drive data, it can output a constant current signal to the load (such as LED) to drive the load to achieve the corresponding function.

[0057] The signal transmission breakpoint protection method provided by the embodiment of the present application is to send addressing signals to multiple constant current drive modules in series according to the first signal transmission direction and the second transmission direction, respectively, and receive the first addressing feedback data set and the second addressing feedback data set returned by each constant current drive module, and then determine the breakpoint position in each constant current drive module based on the first addressing feedback data set and the second addressing feedback data set, and determine the first group of constant current drive modules and the second group of constant current drive modules according to the breakpoint position, and finally send constant current drive data to the first group of constant current drive modules and the second group of constant current drive modules respectively according to different signal transmission directions. The embodiment of the present application realizes that when a breakpoint occurs in the constant current drive module in series, the signal can still be transmitted between each constant current drive module, avoiding the interruption of signal transmission caused by the breakpoint, reducing the failure rate of equipment operation, and improving the stability of equipment operation.

[0058] In some optional implementations, such as Figure 2 As shown, step 103 includes:

[0059] Step 1031: If the first addressing feedback data set and the second addressing feedback data set are different from the preset data set, it is determined that breakpoints exist in at least two constant current driving modules.

[0060] The preset data set is the addressing feedback data set returned by at least two constant current driving modules when there is no breakpoint. If there is a breakpoint, the first addressing feedback data set and the second addressing feedback data set do not include the addressing feedback data returned by the constant current driving module after the breakpoint.

[0061] Step 1032, from each constant current driving module corresponding to the first addressing feedback data set, determine that the last constant current driving module that receives the first addressing signal is the first target constant current driving module, and, from each constant current driving module corresponding to the second addressing feedback data set, determine that the last constant current driving module that receives the second addressing signal is the second target constant current driving module.

[0062] Among them, the first addressing signal and the second addressing signal are sent to each constant current driving module in turn in opposite directions. Therefore, the next-level constant current driving module of the last constant current driving module to receive the first addressing signal or the second addressing signal cannot return the correct addressing feedback data due to the existence of the breakpoint.

[0063] Step 1033: determine the position between the first target constant current driving module and the second target constant current driving module as the breakpoint position.

[0064] As an example, the first target constant current driving module is IC_D, and the second target constant current driving module is IC_D+1, and the breakpoint position is between IC_D and IC_D+1.

[0065] This embodiment determines the first target constant current driving module and the second target constant current driving module by judging the data in the first addressing feedback data set and the second addressing feedback data set, and then determines the position between the first target constant current driving module and the second target constant current driving module as the breakpoint position, thereby realizing fast and accurate determination of the breakpoint position.

[0066] In some optional implementations, such as Figure 3 As shown, step 101 includes:

[0067] Step 1011: Send a first addressing signal to a first-stage constant current driving module among at least two constant current driving modules, and receive a first addressing feedback data set from the first-stage constant current driving module.

[0068] Among them, the first-level constant current driving module is the first one of the multiple constant current driving modules connected in series. For example, at least two constant current driving modules are represented as IC_1-IC_N in the order of arrangement, and IC_1 is the first-level constant current driving module. After sending the first addressing signal to the first-level constant current driving module, the constant current driving modules at each level return the addressing feedback data in turn, and the first-level constant current driving module sends each addressing feedback data to the electronic device that executes this method.

[0069] Step 102 includes:

[0070] Step 1021: Send a second addressing signal to a last-stage constant current driving module among the at least two constant current driving modules, and receive a second addressing feedback data set from the last-stage constant current driving module.

[0071] Among them, the last level constant current driving module is the last one of the multiple constant current driving modules connected in series. For example, the above IC_N is the last level constant current driving module. After sending the second addressing signal to the last level constant current driving module, the constant current driving modules at each level return the addressing feedback data in turn, and the last level constant current driving module sends each addressing feedback data to the electronic device that executes this method.

[0072] This embodiment sends addressing signals to the first-stage constant current driving module and the last-stage constant current driving module respectively, and can use the twice received addressing feedback data sets to fully verify the position of the breakpoint from two directions, thereby further improving the accuracy of determining the breakpoint position.

[0073] In some optional implementations, such as Figure 4 As shown, step 105 includes:

[0074] Step 1051, according to the address of each constant current driving module in the first group of constant current driving modules, send a first group of constant current driving data to the first-level constant current driving module, so that each constant current driving module in the first group of constant current driving modules receives the corresponding constant current driving data in series.

[0075] Step 1052, according to the address of each constant current driving module in the second group of constant current driving modules, send the second group of constant current driving data to the last level constant current driving module, so that each constant current driving module in the second group of constant current driving modules receives the corresponding constant current driving data in series.

[0076] Specifically, after the breakpoint position is determined, the address of each constant current drive module in the first group of constant current drive modules and the address of each constant current drive module in the second group of constant current drive modules can be determined, and then the single-line bidirectional communication protocol can be used to send constant current drive data to the first group of constant current drive modules and the second group of constant current drive modules respectively. The constant current drive data sent twice can completely drive the above-mentioned at least two constant current drive modules.

[0077] This embodiment implements sending constant current drive data twice according to the address of each constant current drive module in the first group of constant current drive modules and the second group of constant current drive modules, thereby more accurately sending constant current drive data to each constant current drive module and improving the stability of load operation.

[0078] Figure 5 A schematic diagram of the structure of a signal transmission breakpoint protection circuit provided in an embodiment of the present application, the circuit is generally used in a display panel, and the circuit specifically includes: a constant current control module 501 and at least two constant current drive modules 502 connected in series.

[0079] like Figure 5 As shown, the constant current control module 501 includes a first data transmission terminal B1 and a second data transmission terminal B2, the first data transmission terminal is connected to the first level constant current driving module of at least two constant current driving modules 502, and the second data transmission terminal is connected to the last level constant current driving module of at least two constant current driving modules 502. At least two constant current driving modules 502 include IC_1 to IC_N. IC_1 is the first level constant current driving module, and IC_N is the last level constant current driving module.

[0080] The constant current control module 501 is used to execute the above signal transmission breakpoint protection method. The constant current control module 501 may include various electronic devices with logic control functions, such as MCU (Microcontroller Unit), FPGA (Field Programmable Gate Array), etc.

[0081] The method specifically performed by the constant current control module 501 includes:

[0082] According to a preset first signal transmission direction (i.e., the direction from IC_1 to IC_N), a first addressing signal is sent to at least two constant current driving modules 502, and a first addressing feedback data set returned by at least two constant current driving modules 502 is received;

[0083] According to a preset second signal transmission direction (i.e., the direction from IC_N to IC_1), a second addressing signal is sent to at least two constant current driving modules 502, and a second addressing feedback data set returned by at least two constant current driving modules 502 is received;

[0084] Determine breakpoint locations in at least two constant current drive modules 502 based on the first addressing feedback data set and the second addressing feedback data set;

[0085] According to the breakpoint position, determining, from the at least two constant current driving modules 502, a first group of constant current driving modules and a second group of constant current driving modules disconnected by the breakpoint position;

[0086] According to the first signal transmission direction, a first group of constant current driving data is sent to the first group of constant current driving modules, and according to the second signal transmission direction, a second group of constant current driving data is sent to the second group of constant current driving modules.

[0087] The signal transmission breakpoint protection circuit provided in the embodiment of the present application, through the constant current control module 501, sends addressing signals to multiple constant current drive modules in series according to the first signal transmission direction and the second transmission direction, and receives the first addressing feedback data set and the second addressing feedback data set returned by each constant current drive module, and then determines the breakpoint position based on the first addressing feedback data set and the second addressing feedback data set, and determines the first group of constant current drive modules and the second group of constant current drive modules according to the breakpoint position, and finally sends constant current drive data to the first group of constant current drive modules and the second group of constant current drive modules respectively according to different signal transmission directions. This circuit realizes that when a breakpoint occurs in the constant current drive module in series, the signal can still be transmitted between each constant current drive module, avoiding the interruption of signal transmission caused by the breakpoint, reducing the failure rate of equipment operation, and improving the stability of equipment operation.

[0088] In some optional implementations, such as Figure 6 As shown, the constant current control module 501 includes a controller 5011 and a signal switching unit 5012 . The controller 5011 is connected to the signal switching unit 5012 . The signal switching unit 5012 includes a first data transmission terminal B1 and a second data transmission terminal B2 .

[0089] The controller 5011 may be any electronic device with a logic control function, such as an MCU, an FPGA, etc. The signal switching unit 5012 may include a controlled switch for switching the flow direction of the signal under the control of the controller 5011 .

[0090] The controller 5011 is used to send a first control signal to the signal switching unit 5012 .

[0091] The signal switching unit 5012 is used to connect the first data transmission end with the controller 5011 according to the first control signal, so that the controller 5011 sends a first addressing signal to the first-level constant current driving module, receives a first addressing feedback data set from the first-level constant current driving module, and sends a first group of constant current driving data to the first group of constant current driving modules.

[0092] The controller 5011 is further configured to send a second control signal to the signal switching unit 5012 .

[0093] The signal switching unit 5012 is also used to connect the second data transmission end with the controller 5011 according to the second control signal, so that the controller 5011 sends a second addressing signal to the last-stage constant current driving module, receives a second addressing feedback data set from the last-stage constant current driving module, and sends a second group of constant current driving data to the second group of constant current driving modules.

[0094] The signal switching unit 5012 may include a controlled switch, and after receiving the first control signal, the controlled switch may connect the first data transmission end with the controller 5011, and the signal is transmitted between the controller 5011 and the first data transmission end. That is, at least two constant current driving modules 502 transmit the first addressing signal and the constant current driving data according to the first signal transmission direction.

[0095] After receiving the second control signal, the controlled switch can connect the second data transmission end with the controller 5011, and the signal is transmitted between the controller 5011 and the second data transmission end. That is, at least two constant current drive modules 502 transmit the second addressing signal and constant current drive data according to the second signal transmission direction.

[0096] This embodiment realizes the control of the signal switching unit by setting a controller and a signal switching unit in the circuit, thereby switching the path of signal flow. The structure of the circuit is simple and effective, which helps to accurately and efficiently control the signal transmission direction between the controller 5011 and each constant current driving module.

[0097] In some optional implementations of this embodiment, such as Figure 7As shown, the signal switching unit 5012 includes a first group of controlled switches 50121 and a second group of controlled switches 50122. The control ends C of the first group of controlled switches 50121 and the second group of controlled switches 50122 are both connected to the control signal output end of the controller 5011. The two signal transmission ends of the first group of controlled switches 50121 are respectively connected to the controller 5011 and the first signal transmission end. The two signal transmission ends of the second group of controlled switches 50122 are respectively connected to the controller 5011 and the second signal transmission end.

[0098] The first group of controlled switches 50121 and the second group of controlled switches 50122 may respectively include at least one controlled switch, and the controlled switch is switched to an on or off state under the control of the controller 5011 .

[0099] For example, the controller 5011 sends a first control signal to the first group of controlled switches 50121 and the second group of controlled switches 50122, and the first group of controlled switches 50121 is turned on under the drive of the first control signal, and the second group of controlled switches 50122 is turned off under the drive of the first control signal. The first addressing signal and the first group of constant current driving data flow from IC_1 to IC_N according to the first signal transmission direction. The controller 5011 sends a second control signal to the first group of controlled switches 50121 and the second group of controlled switches 50122, and the first group of controlled switches 50121 is turned off under the drive of the first control signal, and the second group of controlled switches 50122 is turned on under the drive of the first control signal, and the second addressing signal and the second group of constant current driving data flow from IC_N to IC_1 according to the second signal transmission direction.

[0100] This embodiment achieves flexible control of the first signal transmission direction and the second signal transmission direction by setting the first group of controlled switches and the second group of controlled switches, which helps to improve the accuracy and convenience of controlling the signal flow direction.

[0101] In some optional implementations of this embodiment, such as Figure 8 As shown, the signal switching unit 5012 also includes a buffer 50123, the first group of controlled switches 50121 includes a first switch unit K1 and a second switch unit K2, the second group of controlled switches 50122 includes a third switch unit K3 and a fourth switch unit K4, and the first switch unit, the second switch unit, the third switch unit and the fourth switch unit are all connected to the control signal output end of the controller 5011.

[0102] The buffer 50123 is disposed between the first switch unit K1 and the second switch unit K2 , and between the third switch unit K3 and the fourth switch unit K4 .

[0103] The buffer 50123 is used to buffer received data and send the buffered data to the constant current drive module or controller 5011 .

[0104] Specifically, the controller 5011 passes Figure 8 After the C port shown sends the first control signal to each switch unit, the first switch unit and the second switch unit are turned on, the third switch unit and the fourth switch unit are turned off, and the signal is transmitted through the port A and the port B1 between the controller 5011, the first switch unit, the buffer 50123, the second switch unit, and at least two constant current drive modules 502. After the controller 5011 sends the second control signal to each switch unit, the third switch unit and the fourth switch unit are turned on, the first switch unit and the second switch unit are turned off, and the signal is transmitted through the port A and the port B2 between the controller 5011, the third switch unit, the buffer 50123, the fourth switch unit, and at least two constant current drive modules 502.

[0105] This embodiment realizes caching and line switching of data transmitted between the controller and at least two constant current drive modules by setting a buffer and four switch units, which helps to make data transmission smoother and avoid freezes or data loss when the data transmission volume is large.

[0106] Fig. 9 A schematic diagram of the structure of a signal transmission breakpoint protection device provided in an embodiment of the present application. Specifically comprising: a first transmission module 901, for sending a first addressing signal to at least two constant current drive modules in series according to a preset first signal transmission direction, and receiving a first addressing feedback data set returned by at least two constant current drive modules; a second transmission module 902, for sending a second addressing signal to at least two constant current drive modules according to a preset second signal transmission direction, and receiving a second addressing feedback data set returned by at least two constant current drive modules; a first determination module 903, for determining the breakpoint position in at least two constant current drive modules based on the first addressing feedback data set and the second addressing feedback data set; a second determination module 904, for determining, from at least two constant current drive modules, a first group of constant current drive modules and a second group of constant current drive modules disconnected by the breakpoint position according to the breakpoint position; a sending module 905, for sending a first group of constant current drive data to a first group of constant current drive modules according to the first signal transmission direction, and sending a second group of constant current drive data to a second group of constant current drive modules according to the second signal transmission direction.

[0107] In some optional implementations, the first determination module includes: a first determination unit, used to determine that there is a breakpoint in at least two constant current driving modules if the first addressing feedback data set and the second addressing feedback data set are different from the preset data set; a second determination unit, used to determine that the last constant current driving module that receives the first addressing signal is the first target constant current driving module from the constant current driving modules corresponding to the first addressing feedback data set, and, from the constant current driving modules corresponding to the second addressing feedback data set, determine that the last constant current driving module that receives the second addressing signal is the second target constant current driving module; a third determination unit, used to determine the position between the first target constant current driving module and the second target constant current driving module as the breakpoint position.

[0108] In some optional implementations, the first transmission module is further used to: send a first addressing signal to a first-level constant current driving module among at least two constant current driving modules, and receive a first addressed feedback data set from the first-level constant current driving module; the second transmission module is further used to: send a second addressing signal to a last-level constant current driving module among at least two constant current driving modules, and receive a second addressed feedback data set from the last-level constant current driving module.

[0109] In some optional implementations, the sending module includes: a first sending unit, used to send a first group of constant current driving data to the first-level constant current driving module according to the address of each constant current driving module in the first group of constant current driving modules, so that each constant current driving module in the first group of constant current driving modules receives the corresponding constant current driving data in sequence in a series manner; a second sending unit, used to send a second group of constant current driving data to the last-level constant current driving module according to the address of each constant current driving module in the second group of constant current driving modules, so that each constant current driving module in the second group of constant current driving modules receives the corresponding constant current driving data in sequence in a series manner.

[0110] The signal transmission breakpoint protection device provided in this embodiment can be as follows Fig. 9 The signal transmission breakpoint protection device shown in can execute all steps of the above signal transmission breakpoint protection methods, thereby achieving the technical effects of the above signal transmission breakpoint protection methods. Please refer to the above related description for details. For the sake of brevity, it will not be repeated here.

[0111] Fig.10 A schematic diagram of the structure of a display panel 1000 provided in an embodiment of the present application is shown in FIG. Fig.10 As shown, the display panel specifically includes: the signal transmission breakpoint protection circuit 500 and the light-emitting unit array 1001 described in the above embodiments, and each constant current driving module in the signal transmission breakpoint protection circuit is connected to at least one light-emitting unit included in the light-emitting unit array.

[0112] like Fig.10 As shown, the number of the signal transmission breakpoint protection circuits can be multiple (including signal transmission breakpoint protection circuit 1-signal transmission breakpoint protection circuit N), which respectively drive multiple light-emitting units included in an area in the light-emitting unit array.

[0113] The display panel provided in the embodiment of the present application, by applying the above-mentioned signal transmission breakpoint protection circuit, realizes that when a breakpoint occurs in the constant current driving modules connected in series, the signal can still be transmitted between the various constant current driving modules, thereby avoiding the interruption of some light-emitting units being unable to light up due to the breakpoint, reducing the failure rate of the display panel operation, and improving the stability of the display panel operation.

[0114] Fig.11 A schematic diagram of the structure of a display device 1100 provided in an embodiment of the present application is shown in FIG. Fig.11 As shown, the display device includes the display panel 1000 described above.

[0115] In addition, the display device may further include a panel frame 1101, a power module 1102, and a data receiving module 1103. Fig.10 The display panel 1000 is shown in FIG. The display panel 1000 is mounted on a panel frame 1101 .

[0116] The power supply end of the display panel 1000 is connected to the power module 1102 , and the signal receiving end of the display panel 1000 is connected to the data receiving module 1103 .

[0117] The power module 1102 can provide the display panel 1000 with the power required for operation, the data receiving module 1103 can receive input data, and the display panel 1000 drives the corresponding pixels to display the corresponding colors according to the received data.

[0118] In addition, the display device Fig.11 In addition to the parts shown, it may also include a memory for storing data and programs, a processor for running application programs, a data transmission bus, various data interfaces (such as a network interface, a user interface), etc.

[0119] The display device provided in the embodiment of the present application, by applying the above-mentioned display panel, realizes that when a breakpoint occurs in the constant current driving modules connected in series, the signal can still be transmitted between the various constant current driving modules, thereby avoiding the interruption of some light-emitting units failing to light up due to the breakpoint, reducing the failure rate of the display device operation, and improving the stability of the display image of the display device.

[0120] The professionals should further realize that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the composition and steps of each example have been generally described in terms of function in the above description. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different circuits to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0121] The steps of the circuits or algorithms described in conjunction with the embodiments disclosed herein may be implemented using hardware, software modules executed by a processor, or a combination of the two. The software modules may be placed in a random access memory (RAM), a memory, a read-only memory (ROM), an electrically programmable ROM, an electrically erasable programmable ROM, a register, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.

[0122] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive and therefore specify the presence of stated features, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the order of execution is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0123] The above is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A signal transmission breakpoint protection method, characterized in that: The method comprises: Sending a first addressing signal to at least two constant current driving modules connected in series according to a preset first signal transmission direction, and receiving a first addressing feedback data set returned by the at least two constant current driving modules; Sending a second addressing signal to the at least two constant current driving modules according to a preset second signal transmission direction, and receiving a second addressing feedback data set returned by the at least two constant current driving modules; Determining breakpoint positions in the at least two constant current drive modules based on the first addressing feedback data set and the second addressing feedback data set; According to the breakpoint position, determining, from the at least two constant current driving modules, a first group of constant current driving modules and a second group of constant current driving modules disconnected by the breakpoint position; According to the first signal transmission direction, a first group of constant current driving data is sent to the first group of constant current driving modules, and according to the second signal transmission direction, a second group of constant current driving data is sent to the second group of constant current driving modules.

2. The method according to claim 1, characterized in that The determining the breakpoint positions in the at least two constant current driving modules based on the first addressing feedback data set and the second addressing feedback data set comprises: If the first addressing feedback data set and the second addressing feedback data set are different from the preset data set, determining that there is a breakpoint in the at least two constant current driving modules; Determine, from among the constant current drive modules corresponding to the first addressing feedback data set, the last constant current drive module that receives the first addressing signal as the first target constant current drive module, and, from among the constant current drive modules corresponding to the second addressing feedback data set, determine, from among the constant current drive modules that receive the second addressing signal, the last constant current drive module that receives the second addressing signal as the second target constant current drive module; A position between the first target constant current driving module and the second target constant current driving module is determined as the breakpoint position.

3. The method according to claim 1, characterized in that: The method of sending a first addressing signal to at least two constant current driving modules connected in series according to a preset first signal transmission direction, and receiving a first addressing feedback data set returned by the at least two constant current driving modules, comprises: Sending a first addressing signal to a first-stage constant current driving module among the at least two constant current driving modules, and receiving the first addressing feedback data set from the first-stage constant current driving module; The step of sending a second addressing signal to the at least two constant current driving modules according to a preset second signal transmission direction, and receiving a second addressing feedback data set returned by the at least two constant current driving modules, comprises: A second addressing signal is sent to a last-stage constant current driving module among the at least two constant current driving modules, and the second addressing feedback data set is received from the last-stage constant current driving module.

4. The method according to claim 3, characterized in that The step of sending a first group of constant current driving data to the first group of constant current driving modules according to the first signal transmission direction, and sending a second group of constant current driving data to the second group of constant current driving modules according to the second signal transmission direction, comprises: According to the address of each constant current driving module in the first group of constant current driving modules, the first group of constant current driving data is sent to the first-stage constant current driving module, so that each constant current driving module in the first group of constant current driving modules sequentially receives the corresponding constant current driving data in a serial manner; According to the address of each constant current driving module in the second group of constant current driving modules, the second group of constant current driving data is sent to the last level constant current driving module, so that each constant current driving module in the second group of constant current driving modules receives the corresponding constant current driving data in series.

5. A signal transmission breakpoint protection circuit, characterized in that: The circuit comprises: a constant current control module and at least two constant current driving modules connected in series, the constant current control module comprises a first data transmission end and a second data transmission end, the first data transmission end is connected to a first-stage constant current driving module of the at least two constant current driving modules, and the second data transmission end is connected to a last-stage constant current driving module of the at least two constant current driving modules; The constant current control module is used to execute the method according to any one of claims 1 to 4.

6. The circuit according to claim 5, characterized in that The constant current control module includes a controller and a signal switching unit, the controller is connected to the signal switching unit, and the signal switching unit includes the first data transmission end and the second data transmission end; The controller is used to send a first control signal to the signal switching unit; The signal switching unit is used to connect the first data transmission end with the controller according to the first control signal, so that the controller sends a first addressing signal to the first-level constant current driving module, receives a first addressing feedback data set from the first-level constant current driving module, and sends a first group of constant current driving data to the first group of constant current driving modules; The controller is also used to send a second control signal to the signal switching unit; The signal switching unit is also used to connect the second data transmission end with the controller according to the second control signal, so that the controller sends a second addressing signal to the last-stage constant current driving module, receives a second addressing feedback data set from the last-stage constant current driving module, and sends a second group of constant current driving data to the second group of constant current driving modules.

7. The circuit according to claim 5, characterized in that The signal switching unit includes a first group of controlled switches and a second group of controlled switches, wherein the control ends of the first group of controlled switches and the second group of controlled switches are both connected to the control signal output end of the controller, the two signal transmission ends of the first group of controlled switches are respectively connected to the controller and the first signal transmission end, and the two signal transmission ends of the second group of controlled switches are respectively connected to the controller and the second signal transmission end.

8. The circuit according to claim 7, characterized in that The signal switching unit further includes a buffer, the first group of controlled switches includes a first switch unit and a second switch unit, the second group of controlled switches includes a third switch unit and a fourth switch unit, and the first switch unit, the second switch unit, the third switch unit and the fourth switch unit are all connected to the control signal output terminal of the controller; The buffer is disposed between the first switch unit and the second switch unit, and between the third switch unit and the fourth switch unit.

9. A display panel, characterized in that: include: The signal transmission breakpoint protection circuit and the light-emitting unit array described in any one of claims 5 to 8, wherein each constant current driving module in the signal transmission breakpoint protection circuit is connected to at least one light-emitting unit included in the light-emitting unit array.

10. A display device, characterized in that: include: The display panel as claimed in claim 9.

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