LED lamp panel

Abstract

The embodiment of the utility model provides an LED lamp panel. According to the LED display screen, a serial-parallel mixed power supply mode is adopted for the LED lamp panel, under the condition that energy consumption is reduced through the serial power supply mode, the problem that follow-up LED power failure is caused by faults of a certain LED lamp bead can be solved, the number of the LED lamp beads which are subjected to power failure is reduced, the risk that the whole LED display screen fails is reduced, and the reliability of the LED display screen is improved. Furthermore, a first breakpoint continuous transmission line is introduced into each LED lamp bead, so that the data signal can still be transmitted to the next LED lamp bead when the LED driving chip fails; furthermore, a second broken line continuous transmission line is introduced between the first LED lamp bead and the second LED lamp bead which are spaced by at least two LED lamp beads, so that the data signal can be continuously transmitted to the second LED lamp bead and the subsequent LED lamp beads when a plurality of continuous LED lamp beads break down.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to an LED lamp panel. BACKGROUND

[0002] With the rapid development of science and technology, LED (Light Emitting Diode) technology has been widely used in the fields of lighting and display due to its high energy efficiency, long service life and environmental protection characteristics. Especially in the field of display technology, LED display screen has become the first choice for indoor and outdoor advertising, stage background, information display and other applications due to its excellent display effect and flexibility.

[0003] In the field of LED display technology, LED light bar screen is a common LED display screen, which usually includes a controller and a plurality of LED lamp strings, each LED lamp string including a plurality of LED lamp beads. On the one hand, the controller is responsible for display control of the LED lamp beads in the plurality of LED lamp strings, that is, providing a data signal for each LED lamp string, and the data signal is transmitted from the first LED lamp bead in the LED lamp string to the subsequent LED lamp beads in turn, so that each LED lamp bead displays the corresponding data.

[0004] On the other hand, the controller also controls the power supply of the LED lamp beads in the plurality of LED lamp strings, and usually adopts a stable voltage power supply mode to supply power to the plurality of LED lamp beads in the same LED lamp string in parallel, so as to reduce the mutual influence between the LED lamp beads. In the parallel power supply mode, in order to ensure the safety of the LED lamp beads, a current limiting resistor needs to be configured for each LED lamp bead to limit the current, and these resistors will generate heat and consume energy. Especially with the increase of the number of LED lamp beads, the energy consumption will also increase. Invention content

[0005] The present application provides an LED lamp panel to provide a series-parallel hybrid power supply LED lamp panel, the series power supply mode reduces energy consumption, and the parallel power supply solves the problem that the failure of a certain LED lamp bead causes all the subsequent LED lamp beads to be powered off.

[0006] The embodiment of the present application provides an LED lamp panel, which comprises: a plurality of LED lamp strings, each LED lamp string comprising: a plurality of LED lamp beads, each LED lamp bead being provided with a power input port and a power output port, and an LED driving chip and an LED light emitting unit being packaged inside the LED lamp bead; the power input port and the power output port of each LED lamp bead are electrically connected with the power input pin and the power output pin of the internal LED driving chip respectively, so as to provide a power signal for the LED light emitting unit through the LED driving chip; in the same LED lamp string, the power output port and the power input port of adjacent LED lamp beads are electrically connected to form a series power supply circuit; and the series power supply circuits between adjacent LED lamp strings are connected in parallel to form a parallel power supply circuit.

[0007] In an optional embodiment, the LED lamp beads in the plurality of LED lamp strings are arranged in a row-column manner, the LED lamp beads in the same LED lamp string are located in the same column, the LED lamp beads in the same position in different LED lamp strings are located in the same row, and the serial power supply lines between adjacent two rows of LED lamp beads are connected in parallel to form parallel power supply lines; or, the LED lamp beads in the plurality of LED lamp strings are arranged in a row-column manner, the LED lamp beads in the same LED lamp string are located in the same row, the LED lamp beads in the same position in different LED lamp strings are located in the same column, and the serial power supply lines between adjacent two columns of LED lamp beads are connected in parallel to form parallel power supply lines.

[0008] In an optional embodiment, each LED lamp bead further comprises a power supply gating circuit arranged between the power supply input port and the power supply input pin; the power supply gating circuit is configured to: when detecting that power supply signals exist on both the serial power supply line and the parallel power supply line, connect the serial power supply line with the power supply input pin; or, when detecting that power supply signals exist on one of the serial power supply line and the parallel power supply line and power supply signals do not exist on the other one, connect the power supply signal existing line with the power supply input pin.

[0009] In an optional embodiment, each LED lamp bead is further provided with a first signal input port and a first signal output port, a second signal input port and a second signal output port; the first signal input port, the second signal input port, the first signal output port and the second signal output port of each LED lamp bead are respectively electrically connected with the first signal input pin, the second signal input pin, the first signal output pin and the second signal output pin of the internal LED driving chip, so as to transmit data signals to the LED light emitting unit through any signal input pin of the LED driving chip; in the same LED lamp string, the first signal output port and the second output port of adjacent LED lamp beads are respectively electrically connected with the first signal input port and the second signal input port to form a serial signal line; and the first signal input port and the second signal output port of each LED lamp bead are directly electrically connected to form a first breakpoint transmission line, bypassing the internal LED driving chip.

[0010] In an optional embodiment, the second signal output port of a first LED lamp bead and the second signal input port of a second LED lamp bead in any LED lamp string are electrically connected to form a second breakpoint transmission line; wherein the first LED lamp bead is any LED lamp bead on the any LED lamp string, and the second LED lamp bead is spaced apart from the first LED lamp bead by at least two LED lamp beads.

[0011] In an optional embodiment, the first LED lamp bead and the second LED lamp bead form a lamp bead group, and there is one or more lamp bead groups on any LED lamp string, and different lamp bead groups have different first LED lamp beads and second LED lamp beads.

[0012] In an optional embodiment, in adjacent two lamp bead groups, the first LED lamp bead in the latter lamp bead group is the second LED lamp bead or the LED lamp bead behind the second LED lamp bead in the former lamp bead group; or, in adjacent two lamp bead groups, the first LED lamp bead in the latter lamp bead group is the LED lamp bead in front of the second LED lamp bead in the former lamp bead group.

[0013] In an optional embodiment, the number of LED lamp beads between the first LED lamp bead and the second LED lamp bead in different LED lamp bead groups is the same or different.

[0014] In an optional embodiment, the LED driving chip comprises a monitoring circuit electrically connected with the first signal input pin and the second signal input pin, an analysis circuit electrically connected with the monitoring circuit, and a driving circuit electrically connected with the analysis circuit; wherein the monitoring circuit outputs the data signal and the pin identification of any signal input pin to the analysis circuit in the case that the data signal is received by the any signal input pin; the analysis circuit analyzes the data segment corresponding to the LED light unit from the data signal according to the analysis mode corresponding to the pin identification, and outputs the data segment to the driving circuit; the driving circuit performs display control on the LED light unit according to the data segment; wherein different signal pins correspond to different analysis modes.

[0015] In an optional embodiment, the LED lamp panel is electrically connected with a controller, the controller comprises a power supply end, a ground end and a plurality of communication ports; the plurality of LED lamp strings are respectively electrically connected with the plurality of communication ports, for receiving the data signal provided by the controller; the power input port of the first LED lamp bead and the power output port of the tail LED lamp bead in the plurality of LED lamp strings are respectively electrically connected with the power supply end and the ground end, for receiving the power signal provided by the controller. In the embodiment of the application, the serial-parallel hybrid power supply mode is adopted for the LED lamp panel, in the case that the serial power supply mode reduces energy consumption, the fusion of the parallel power supply mode can also solve the problem that the failure of a certain LED lamp bead leads to the power failure of subsequent LED lamp beads in the serial power supply mode, the number of LED lamp beads with power failure is minimized, the risk of failure of the entire LED display screen is reduced, and the reliability of the LED display screen is improved.

[0016] Further optionally, by directly electrically connecting between the first signal input port and the second signal output port of the LED lamp bead, a first breakpoint transmission circuit is formed, ensuring that the data signal can still be transmitted to the next LED lamp bead when the LED driving chip fails, solving the problem that the data signal cannot be transmitted to the subsequent LED lamp bead due to the failure of a certain LED lamp bead.

[0017] Further optionally, by electrically connecting between the second signal output port and the second signal input port of the first LED lamp bead and the second LED lamp bead which are at least spaced by two LED lamp beads, a second breakpoint transmission circuit is formed, so that when multiple consecutive LED lamp beads fail, the data signal can still continue to be transmitted to the second LED lamp bead and the subsequent LED, solving the problem that the data signal cannot continue to be transmitted to the subsequent LED lamp bead after multiple consecutive LED lamp beads fail. BRIEF DESCRIPTION OF DRAWINGS

[0018] The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and serve to explain the principles of the application. In the drawings:

[0019] Figure 1 A serial-parallel power supply LED lamp panel structure schematic diagram provided for the exemplary embodiments of the present application;

[0020] Figure 2a A structure schematic diagram of an LED lamp bead provided for the exemplary embodiments of the present application;

[0021] Figure 2b Another structure schematic diagram of an LED lamp bead provided for the exemplary embodiments of the present application;

[0022] Figure 3a A structure schematic diagram of an LED lamp string provided for the exemplary embodiments of the present application;

[0023] Figure 3b Another structure schematic diagram of an LED lamp string provided for the exemplary embodiments of the present application;

[0024] Figure 3c Still another structure schematic diagram of an LED lamp string provided for the exemplary embodiments of the present application;

[0025] Figure 3d Still another structure schematic diagram of an LED lamp string provided for the exemplary embodiments of the present application;

[0026] Figure 4a A structure schematic diagram of an LED display screen provided for the exemplary embodiments of the present application;

[0027] Figure 4bAnother structural schematic diagram of an LED display screen provided for an exemplary embodiment of the present application is shown in FIG. 6.

[0028] Figure 4c Another structural schematic diagram of an LED display screen provided for an exemplary embodiment of the present application is shown in FIG. 6. DETAILED DESCRIPTION

[0029] In order to make the objectives, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be described below in detail with reference to the embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0030] In the embodiments of the present application, by using the series-parallel hybrid power supply mode for the LED lamp panel, the problem of power failure of subsequent LED lamp beads caused by failure of a certain LED lamp bead in the series power supply mode can be solved under the condition of reducing energy consumption in the series power supply mode, the number of LED lamp beads with power failure is minimized, the risk of failure of the entire LED display screen is reduced, and the reliability of the LED display screen is improved.

[0031] Further optionally, in the embodiments of the present application, the technical problem that subsequent LED lamp beads cannot normally receive data signals due to failure of part of LED lamp beads in the same LED lamp string is solved by directly electrically connecting between the first signal input port and the second signal output port of the LED lamp bead to form a first breakpoint transmission circuit, so as to ensure that the data signal can still be transmitted to the next LED lamp bead when the LED driving chip fails, and the problem that the data signal cannot be transmitted to the subsequent LED lamp bead due to failure of a certain LED lamp bead is solved.

[0032] Further optionally, in the embodiments of the present application, by electrically connecting between the second signal output port and the second signal input port between the first LED lamp bead and the second LED lamp bead which are spaced apart by at least two LED lamp beads to form a second breakpoint transmission circuit, the data signal can still be transmitted to the second LED lamp bead and the subsequent LED when a plurality of continuous LED lamp beads fail, and the problem that the data signal cannot be continuously transmitted to the subsequent LED lamp bead after failure of a plurality of continuous LED lamp beads is solved.

[0033] The technical solutions provided by the embodiments of the present application will be described in detail below with reference to the drawings.

[0034] Figure 1 A structural schematic diagram of an LED lamp panel provided for an exemplary embodiment of the present application is shown in FIG. 1. Figure 1As shown, an LED lamp panel includes a plurality of LED lamp strings. The number of lamp strings included in the LED lamp panel is not limited, for example, it can be 2, 5, 6, 10, 20, 30, etc., of course, it can also be more or less, which can be determined according to the application scenario and the size of the display space. For example, in Figure 1 , and Figures 4a-4c , each LED lamp panel includes 4 LED lamp strings as an example, but is not limited thereto. Each LED lamp string includes a plurality of LED lamp beads 100. The number of LED lamp beads 100 included in the LED lamp string is not limited, for example, it can be 10, 30, 50, 100, etc., which can be determined according to the application scenario or the size of the display screen. Each LED lamp string in the embodiment of the present application Figure 1 is taken as an example of 5 LED lamp beads 100, but is not limited thereto. As shown in Figure 1 and Figure 2b , each LED lamp bead 100 is provided with a power input port Vin and a power output port Vout. Further, as shown in Figure 2a and Figure 2b , each LED lamp bead 100 is internally packaged with an LED driving chip 10 and an LED light emitting unit 20.

[0035] The LED light emitting unit 20 is a basic light emitting component, which is composed of one or more LED chips and their related auxiliary elements. The LED light emitting unit 20 is the core part of realizing light output, which is a diode made of semiconductor material that emits light when current passes through; the semiconductor materials that can be used include but are not limited to gallium arsenide (GaAs), gallium nitride (GaN), aluminum gallium indium phosphide (AlGaInP), etc.

[0036] The LED driving chip 10 is an integrated circuit specially used for controlling and driving the LED light emitting unit, the main function of which is to ensure that the LED light emitting unit 20 operates under safe and efficient working conditions, and to provide various additional functions to meet the needs of different application scenarios, for example, including but not limited to: display control of the LED light emitting unit 20, power supply control of the LED light emitting unit 20, etc. The display control of the LED light emitting unit 20 includes but is not limited to: providing data signals for the LED light emitting unit 20, dimming control of the LED light emitting unit 20, etc.; the power supply control of the LED light emitting unit 20 includes but is not limited to: providing power supply current for the LED light emitting unit 20, and overvoltage protection (to prevent high input voltage from damaging the LED light emitting unit), overcurrent protection (to prevent excessive current from causing the LED light emitting unit to overheat or be damaged), short circuit protection (when the circuit is short-circuited, the power supply is automatically cut off to protect the safety of the LED light emitting unit), etc.

[0037] The LED driving chip 10 and the LED light-emitting unit 20 have a plurality of pins, respectively, and the interconnection relationship between the pins is the basis for the LED driving chip 10 to control and drive the LED light-emitting unit 20 to emit light. The pins are electrically connected to each other through circuit design, so that the LED driving chip 10 transmits a data signal to the LED light-emitting unit 20, and the data signal is used to control the behavior of the LED light-emitting unit 20. Different signal inputs are set to control different behaviors of the LED light-emitting unit 20, including but not limited to brightness adjustment, color correction, temperature compensation, etc. The signal driving form of the data signal can be various, as long as it can meet the needs of LED display, which is not limited in the embodiments of the present application. For example, the signal driving can be a simple clock driving for synchronizing the data signal; it can be a data driving for transmitting image or text information; or it can be a control driving for adjusting the on-off state and brightness level of the LED. This design enables the LED light-emitting unit 20 to accurately reproduce various images and video content, providing a rich and colorful visual experience. In the embodiments of the present application, the internal implementation structure and pins of the LED driving chip 10 are not limited, and the internal implementation structure and pins of the LED light-emitting unit 20 are also not limited. The pins of the LED driving chip 10 and the pins of the LED light-emitting unit 20 are only exemplarily described from the functional point of view as follows:

[0038] The pins of the LED driving chip 10 include but are not limited to: 1. A power input pin V1 for connecting an external power signal. 2. A ground pin, which can be used as a circuit ground for reference potential, and is connected to an external common ground. 3. A dimming control pin for receiving a dimming signal such as a PWM signal or an analog voltage to adjust the brightness of the LED. 4. An enable pin for controlling the on and off state of the LED driving chip 10; 5. A power output pin V2 for providing driving current to the LED light-emitting unit 20. 6. A communication interface pin for realizing digital communication between the LED light-emitting unit 20 and the outside. In the embodiments of the present application, the communication interface pin of the LED driving chip 10 includes at least a first signal input pin P1 and a first signal output pin M1, a second signal input pin P2 and a second signal output pin M2, and a signal control pin is exemplarily described.

[0039] The pins of the LED light-emitting unit 20 include but are not limited to: 1. A positive pin as the positive of the LED for accepting current inflow, which can be connected to the power output pin V2 of the LED driving chip 10. 2. A negative pin as the negative of the LED responsible for current outflow, which can be connected to the power output pin V2 of the LED driving chip 10 or directly connected to the ground. 3. A communication pin for connecting the communication interface pin of the LED driving chip 10, such as the signal control pin, for receiving data signals and displaying.

[0040] In the LED light board provided in this embodiment, the controller is electrically connected to the power input port Vin of the first LED bead 100 and the power output port Vout of the last LED bead 100 in each LED string, for providing power signals to the LED bead 100. Furthermore, the power signal can be provided by the controller, which can connect to... Figure 1 The power supply terminal VCC and the ground terminal GND shown are electrically connected to provide power signals to the LED strings in the LED light panel. Optionally, the controller can be directly connected to the power supply terminal and the ground terminal, or it can be connected to them via a connector or other intermediate circuitry; this is not limited. The power input port Vin of the first LED bead 100 in each of the multiple LED strings in the LED light panel is connected in parallel to the power supply terminal VCC, meaning all LED strings receive power directly from VCC. The power output port Vout of the last LED bead 100 in each of the multiple LED strings in the LED light panel is connected in parallel to the ground terminal GND, ensuring that the ends of all LED strings are correctly grounded. By connecting in parallel to the power supply terminal and the ground terminal, each LED string receives a stable power supply, while the serial power supply line ensures the continuity of the power signal throughout the entire LED string.

[0041] like Figure 2b As shown, each LED bead 100 is provided with a power input port Vin and a power output port Vout. These ports are electrically connected to the power input pin V1 and power output pin V2 of the LED driver chip inside the LED bead 100. This connection method ensures that the LED driver chip can receive power signals from the power input port Vin and pass them to the LED light-emitting unit, so as to provide power signals to the LED light-emitting unit through the LED driver chip, thereby driving the LED light-emitting unit to display.

[0042] In each LED string, adjacent LED beads 100 are electrically connected through their power input port Vin and power output port Vout. That is, the power output port Vout of the previous LED bead 100 is electrically connected to the power input port Vin of its next adjacent LED bead 100, forming a serial power supply line. This serial connection method ensures that the power signal can be transmitted sequentially along the LED string.

[0043] Furthermore, in the LED light panel, the serial power supply lines between adjacent LED strings are connected in parallel to form parallel power supply lines; for the LED light panel, the serial power supply lines and parallel power supply lines are combined to form a serial-parallel power supply method. Optionally, the serial power supply lines between adjacent LED strings can be directly connected by wires, or other connection methods can be used, which are not limited.

[0044] In this embodiment, for the LED lamp strings in the LED lamp panel, the serial power supply mode is adopted preferentially, that is, the LED lamp beads 100 in the LED lamp string are located on the same serial power supply line, and the same power supply is used to uniformly supply power to these LED lamp beads 100, and each LED lamp bead 100 has the same current. The same current can ensure that the brightness of each LED is consistent, and the problem of uneven brightness caused by current difference is avoided. In addition, under the serial power supply mode, it is not necessary to separately configure a current limiting resistor for each LED lamp bead 100, which can reduce the energy consumption of this part, especially as the number of LED lamp beads 100 increases, the energy consumption can be significantly saved. Furthermore, compared with the parallel power supply mode, the serial power supply mode only needs one constant current source to supply power to the entire LED lamp string, which is conducive to reducing the complexity of the driving chip. Further, compared with the parallel power supply mode, the current borne by each LED lamp bead 100 in the serial power supply mode is relatively low, which reduces the heat generation of a single LED. Not only can the energy consumption be reduced, but also the life of the LED can be prolonged.

[0045] Further, on the basis of the serial power supply mode, the parallel power supply mode is introduced to solve the problem that the subsequent LED lamp beads 100 cannot obtain the power supply signal due to the failure of a certain LED lamp bead 100 on the serial power supply line.

[0046] Further optionally, in the embodiments of the present application, the arrangement mode of the LED lamp panel is not limited and can be row-column arrangement.

[0047] For example, the LED lamp beads 100 in the plurality of LED lamp strings in the LED lamp panel are arranged in a row-column manner, the LED lamp beads 100 in the same LED lamp string are located in the same column, the LED lamp beads 100 in different LED lamp strings are located in the same row, and the serial power supply lines between the adjacent two rows of LED lamp beads 100 are connected in parallel to form parallel power supply lines. Optionally, the serial power supply lines between the adjacent two rows of LED lamp beads 100 can be directly connected by wires, or other connection modes can also be used, which are not limited. This connection mode ensures that each row of LED lamp beads 100 can obtain stable power supply, and at the same time allows the power supply signal to be transmitted in parallel between different columns, for example, the LED lamp beads 100 in a column in the previous row can supply power in parallel to the LED lamp beads 100 in each column in the next row, and the LED in the same column in the previous row can supply power in series to the LED lamp beads 100 in the next row, realizing a hybrid power supply mode of series and parallel connection. The parallel power supply mode is used to solve the problem that the subsequent LED lamp beads 100 cannot obtain the power supply signal due to the failure of a certain LED lamp bead 100 on the serial power supply line.

[0048] For example, the LED lamp beads 100 in the plurality of LED lamp strings are arranged in rows and columns, the LED lamp beads 100 in the same LED lamp string are located in the same row, the LED lamp beads 100 in different LED lamp strings are located in the same column, and the serial power supply lines between the adjacent two columns of LED lamp beads 100 are connected in parallel to form parallel power supply lines. This connection mode ensures that each column of LED lamp beads 100 can obtain stable power supply, while allowing the power supply signals to be transmitted in parallel between different rows, realizing a hybrid power supply mode of series and parallel connection. The parallel power supply mode is used to solve the problem that the subsequent LED lamp beads 100 cannot obtain the power supply signal due to the failure of a certain LED lamp bead 100 on the serial power supply line.

[0049] Further, in the hybrid power supply mode of series and parallel connection, considering that each LED lamp bead 100 simultaneously receives the power supply signal on the serial power supply line and the power supply signal on the parallel power supply line, in the embodiment of the present application, each LED lamp bead 100 in the LED lamp panel further includes a power supply gating circuit arranged between the power input port Vin and the power input pin V1, which is used to select the power supply signal finally used from the serial power supply line and the parallel power supply line.

[0050] Specifically, the power supply gating circuit can detect whether the power supply signal is received on the serial power supply line and the parallel power supply line. In the case that the power supply signal exists on both the serial power supply line and the parallel power supply line, the serial power supply line is connected to the power input pin V1, and the serial power supply mode is used preferentially, that is, the serial power supply line is used as the main power supply path preferentially to give full play to the advantages of the serial power supply mode. Or, in the case that the power supply signal exists on one of the serial power supply line and the parallel power supply line and does not exist on the other, the power supply line with the power supply signal is connected to the power input pin V1 to preferentially solve the power supply problem of the LED lamp bead 100.

[0051] Further, in the case that the serial power supply line has no power supply signal due to the failure of the previous LED lamp bead 100, the parallel power supply line as a backup route can be gated to supply power to the subsequent LED lamp bead 100 in time, so that the subsequent LED lamp bead 100 can work normally. This circuit design ensures that the power supply of the LED lamp bead 100 has high reliability and flexibility. The serial power supply line as the main power supply path can reduce energy consumption, ensure the consistency of the brightness of the LED lamp bead 100, and simplify the circuit complexity of the driving chip. The parallel power supply line as the backup power supply path ensures that even if there is a problem in the main path, the subsequent LED lamp bead 100 can still obtain the power supply signal and the LED lamp bead 100 can work normally.

[0052] In the embodiments of the present application, the power gating circuit contained in each LED lamp bead 100 in the LED lamp panel can be implemented by a relay or an electronic switch, but is not limited thereto.

[0053] In the LED lamp panel provided by the embodiments of the present application, the LED lamp beads 100 in each LED lamp string can not only receive power signals, but also receive data signals for display control. In an optional embodiment, the data signals in the LED lamp panel can be provided by a controller. Specifically, the controller further includes a plurality of communication ports, which are respectively electrically connected with the plurality of LED lamp strings, for providing data signals to the plurality of LED lamp strings, wherein the data signals refer to display data required for display control of the LED lamp beads.

[0054] Correspondingly, as shown in Figure 2a and Figure 2b In addition to the power input port Vin and the power output port Vout, each LED lamp bead 100 further externally provides a first signal input port DI, a first signal output port DO, a second signal input port FDI and a second signal output port FDO. The first signal input port DI and the first signal output port DO are respectively electrically connected with the first signal input pin P1 and the first signal output pin M1 of the LED driving chip 10, forming a transmission line of data signals; the second signal input port FDI and the second signal output port FDO are respectively electrically connected with the second signal input pin P2 and the second signal output pin M2 of the LED driving chip 10, forming another transmission line of data signals; wherein the data signals can be transmitted from the LED driving chip 10 to the LED light unit 20 through the two transmission lines, so as to control the display of the LED light unit 20.

[0055] Further, the first signal output port DO and the second output port FDO of the LED lamp bead 100 are respectively electrically connected with the first signal input port DI and the second signal input port FDI of the next LED lamp bead 100 in the LED lamp string to which the LED lamp bead 100 belongs, that is, the electrical connection between the corresponding signal input ports and the signal output ports of the adjacent LED lamp beads 100 can form a serial signal line, which is used to ensure that the data signals can be continuously transmitted to the subsequent LED lamp beads 100.

[0056] For each LED lamp bead 100, the data signal can enter the first signal input pin P1 of the LED driving chip through the first signal input port DI, flow into the first signal output port DO through the first signal output pin M1 of the LED driving chip 10, and then enter the next LED lamp bead 100 through the first signal input port DI of the next LED lamp bead 100 to realize serial transmission; or the data signal can enter the second signal input pin P2 of the LED driving chip through the second signal input port FDI of the LED lamp bead 100, flow into the second signal output port FDO through the second signal output pin M2 of the LED driving chip, and then enter the next LED lamp bead 100 through the second signal input port FDI of the next LED lamp bead 100 to realize serial transmission. As can be seen, the above two transmission lines both pass through the LED driving chip 10, so if the LED driving chip 10 fails or the LED lamp bead 100 fails, the data signal will not be able to continue to be transmitted to the subsequent lamp beads.

[0057] In some optional embodiments, the LED lamp beads in the LED lamp panel can be implemented by using the LED lamp bead structure provided in the above embodiments, and the LED lamp panel adopts the serial-parallel power supply mode but does not have the breakpoint continuation function. It is explained here that the LED lamp panel is not limited to the LED lamp bead structure provided in the above embodiments. In other optional embodiments, in order to improve the fault tolerance of the data signal transmission between the LED lamp beads 100, for the LED lamp beads 100 in the LED lamp panel, a first breakpoint continuation line can also be additionally arranged between the first signal input port DI and the second signal output port FDO of the LED lamp bead 100, that is, the LED driving chip 10 is directly electrically connected between the first signal input port DI and the second signal output port FDO, for example, the first signal input port DI and the second signal output port FDO can be directly electrically connected through a wire, or a wire (or a wiring) that does not pass through the LED driving chip can be additionally arranged between the first signal input port DI and the second signal output port FDO on the PCB board where the LED lamp bead 100 is located, and the first signal input port DI and the second signal output port FDO are directly electrically connected through the wire, thereby forming the first breakpoint continuation line between the first signal input port DI and the second signal output port FDO.

[0058] In the case of adding the first breakpoint transmission line, if the LED driving chip 10 in the LED lamp bead 100 fails (or the LED lamp bead 100 fails), as the first signal input port DI of the LED lamp bead 100 -> the first signal input pin P1 of the LED driving chip -> the first signal output pin M1 -> the first signal output port DO of the LED lamp bead 100 -> the second signal input port FDI of the LED lamp bead 100 -> the second signal input pin P2 of the LED driving chip -> the second signal output pin M2 -> the second signal output port FDO of the LED lamp bead 100 cannot continue to transmit the data signal to the subsequent LED lamp bead 100, but the data signal can continue to be transmitted to the subsequent LED lamp bead 100 through the first breakpoint transmission line (in the case of skipping the LED driving chip) between the first signal input port DI of the LED lamp bead 100 -> the second signal output port FDO, ensuring the stable operation of the entire LED lamp string and reducing the failure of the entire LED lamp string due to the failure of a single LED lamp bead 100 or driving chip.

[0059] Further, on the basis of the LED lamp bead 100 shown in the above Figure 2a or Figure 2b The LED lamp string in the LED lamp panel provided by the embodiment of the present application can use the LED lamp bead with the first breakpoint transmission line described above, but is not limited thereto. Hereinafter, the LED lamp string using the LED lamp bead 100 shown in the above Figure 2a or Figure 2b will be introduced and described. As shown in the above Figure 3a , the LED lamp string in the embodiment of the present application includes a plurality of LED lamp beads 100 connected in series. Here, the series connection includes series connection in data signal transmission and series connection in power supply. Specifically, each LED lamp bead 100 is provided with a first signal input port and a first signal output port, a second signal input port and a second signal output port, and an LED driving chip and an LED light emitting unit are packaged inside the LED lamp bead 100. The series connection of the plurality of LED lamp beads 100 includes series transmission of data signals and series connection of power signals. In the LED lamp string, the first signal input port and the second signal input port of the first LED lamp bead 100 are responsible for receiving data signals from the controller. When the controller outputs data signals, the first signal input port and the second signal input port of the first LED lamp bead 100 receive these data signals, and then transmit these signals to the next LED lamp bead 100 through the first signal output port and the second signal output port thereof. Such series connection ensures that the data signals can be transmitted from one LED lamp bead 100 to the next one in order, until the last LED lamp bead of the entire LED lamp string.

[0060] In the embodiments of the present application, each LED lamp bead 100 of the LED lamp string has two signal input ports (DI and FDI) and two signal output ports (DO and FDO). Wherein, the LED driving chip and the LED light emitting unit are encapsulated inside each LED lamp bead 100. A path called "first breakpoint continuation circuit" is formed between the first signal input port (DI) and the second signal output port (FDO) of each LED lamp bead 100 through direct electrical connection. When the LED driving chip works normally, the data signal enters the LED lamp bead 100 through DI or FDI, and is transmitted to the next lamp bead through DO or FDO after being processed by the LED driving chip. However, if the LED driving chip fails, the data signal will not be output through DO or FDO. At this time, since there is a direct electrical connection between DI and FDO, the data signal can directly jump over the failed LED driving chip through FDO and be transmitted to the next LED lamp bead 100. In this way, even if the LED driving chip of a certain LED lamp bead 100 fails, the data signal can still continue to be transmitted to the next LED lamp bead 100, and the data transmission of the entire LED lamp string can still continue.

[0061] Further, Figure 3b Another structure schematic diagram of an LED lamp string provided by the exemplary embodiments of the present application is provided. Figure 3b In Figure 3a On the basis of the LED lamp string shown, the second signal output port of the first LED lamp bead 100 in the LED lamp string and the second signal input port of the second LED lamp bead 100 are electrically connected, thereby forming a second breakpoint continuation circuit, so that when two or more LED lamp beads 100 between the first LED lamp bead 100 and the second LED lamp bead 100 fail, the data signal can still be transmitted to the second LED lamp bead 100 and the subsequent LED lamp beads 100 thereof; wherein the first LED lamp bead 100 is any LED lamp bead 100 on the LED lamp string, and the second LED lamp bead 100 is spaced apart from the first LED lamp bead 100 by at least two LED lamp beads 100.

[0062] For ease of description, the first LED lamp bead 100 and the second LED lamp bead 100 can form a lamp bead group, and the first LED lamp bead 100 and the second LED lamp bead 100 in a lamp bead group are spaced apart by at least two LED lamp beads 100, for example, can be spaced apart by 2 LED lamp beads 100, or can be spaced apart by 3, 4 or more LED lamp beads 100. In Figure 3b In the embodiments of the present application, the first LED lamp bead 100 and the second LED lamp bead 100 are spaced apart by 2 LED lamp beads 100, but are not limited thereto.

[0063] One or more lamp bead groups can exist on one LED lamp string. In the case that multiple lamp bead groups exist on one LED lamp string, different lamp bead groups have different first LED lamp beads 100 and second LED lamp beads 100. When two or more LED lamp beads 100 between the first LED lamp bead 100 and the second LED lamp bead 100 fail, the failed LED lamp beads 100 cannot transmit data signals to subsequent LED lamp beads through the serial transmission line between the failed LED lamp beads 100 and the next LED lamp bead 100, but can transmit data signals to the next LED lamp bead 100 through the first breakpoint transmission line. Further, when the next LED lamp bead 100 also fails, data signals cannot be transmitted to subsequent LED lamp beads through the first breakpoint transmission line in the next LED lamp bead 100. However, due to the existence of the second breakpoint transmission line, data signals can be directly sent from the second signal output port of the first LED lamp bead 100 to the second signal input port of the second LED lamp bead 100 through the second breakpoint transmission line, thereby ensuring that data signals can continue to be transmitted to the second LED lamp bead 100 and subsequent LED lamp beads. The second breakpoint transmission line can directly skip the failed LED lamp beads 100 in the middle, ensuring that data signals can continue to be transmitted to the second LED lamp bead 100 and subsequent LED lamp beads 100, allowing local LED lamp beads 100 in the LED lamp string to fail without causing the entire LED lamp string to fail, thereby improving the performance of the LED lamp string.

[0064] For example, in the first lamp bead group shown in FIG. 1, there are two LED lamp beads 100 between the first LED lamp bead 100 and the second LED lamp bead 100. The second signal output port of the first LED lamp bead 100 and the second signal input port of the second LED lamp bead 100 are electrically connected to form a second breakpoint transmission line. When the first LED lamp bead 100 behind the first LED lamp bead 100 fails, data signals can be transmitted to the LED lamp bead 100 behind the failed LED lamp bead 100 through the first breakpoint transmission line. However, when two LED lamp beads 100 behind the first LED lamp bead 100 fail, data signals cannot be transmitted through the first breakpoint transmission line. At this time, data signals can be transmitted from the first LED lamp bead 100 to the second LED lamp bead 100 through the second breakpoint transmission line, bypassing the two failed LED lamp beads. Figure 3b In the embodiments of the present application, different lamp bead groups in the LED lamp string have different first LED lamp beads 100 and second LED lamp beads 100. As shown in FIG. 1, the first LED lamp bead 100 and the second LED lamp bead 100 in the first lamp bead group, the second lamp bead group, and the third lamp bead group are all different.

[0065] Figure 3b As shown in FIG. 1, the first LED lamp bead 100 and the second LED lamp bead 100 in the first lamp bead group, the second lamp bead group, and the third lamp bead group are all different. ​

[0066] In the embodiments of the present application, the position relationship between the first LED lamp bead 100 in one lamp bead group and the second LED lamp bead 100 in another lamp bead group is not limited. In an optional embodiment, in the adjacent two lamp bead groups of the LED lamp string, the first LED lamp bead 100 in the latter lamp bead group is the LED lamp bead 100 in front of the second LED lamp bead 100 in the former lamp bead group, but different from the first LED lamp bead 100 in the former lamp bead group, so that the adjacent lamp bead groups are staggered, which is beneficial to solve the problem of further reducing the influence of the failed LED lamp bead 100. In another optional embodiment, in the adjacent two lamp bead groups of the LED lamp string, the first LED lamp bead 100 in the latter lamp bead group is the second LED lamp bead 100 or the LED lamp bead 100 behind the second LED lamp bead 100 in the former lamp bead group, so that the adjacent lamp bead groups appear in sequence without staggering.

[0067] Further optionally, when there is only one LED lamp bead 100 between the adjacent two second breakpoint continuation circuits in the LED lamp string, the lamp bead is the second LED lamp bead 100 in the former lamp bead group in the adjacent lamp bead group, and is also the first LED lamp bead 100 in the latter lamp bead group. When there are at least two LED lamp beads 100 between the adjacent two second breakpoint continuation circuits in the LED lamp string, the first LED lamp bead 100 of the latter lamp bead group in the adjacent lamp bead group is the LED lamp bead 100 behind the second LED lamp bead 100 of the former lamp bead group. As shown in Figure 3b the first lamp bead group and the second lamp bead group, and the first LED lamp bead 100 in the third lamp bead group is the LED lamp bead 100 behind the second LED lamp bead 100 in the second lamp bead group.

[0068] In the embodiments of the present application, the number of LED lamp beads 100 spaced between the first LED lamp bead 100 and the second LED lamp bead 100 in different LED lamp bead groups can be the same or different. The number of LED lamp beads 100 spaced between the first LED lamp bead 100 and the second LED lamp bead 100 in the LED lamp bead group can be adjusted according to different application scenarios, including the voltage requirement of each LED lamp bead 100 or the failure probability of the LED lamp bead 100, and the embodiments of the present application do not limit this. For example, in the application scenario, the voltage of the LED lamp beads 100 in the LED lamp string needs to be the same, so the number of LED lamp beads 100 spaced between the first LED lamp bead 100 and the second LED lamp bead 100 in different LED lamp bead groups in the LED lamp string is the same; in the application scenario, the first LED lamp bead group is a high-voltage LED lamp bead 100, and the second LED lamp bead group is a low-voltage LED lamp bead 100, so that the first LED lamp bead 100 and the second LED lamp bead 100 in the first LED lamp bead group are spaced by two LED lamp beads 100, and the first LED lamp bead 100 and the second LED lamp bead 100 in the second LED lamp bead group are spaced by five LED lamp beads 100, so that the number of LED lamp beads spaced between the first LED lamp bead and the second LED lamp bead in different LED lamp bead groups of the LED lamp string is different.

[0069] Figure 3c Another structure diagram of an LED lamp string is provided for the exemplary embodiments of the present application. Compared with the LED lamp string shown in Figure 3a and Figure 3b , the lamp string shown in Figure 3c shows the partial structure inside the LED lamp bead 100. As shown in Figure 3c , the LED lamp string includes a plurality of LED lamp beads 100, and the plurality of LED lamp beads 100 are connected in series. The series connection relationship between the plurality of LED lamp beads 100 and the data signal transmission line are the same as those in the foregoing embodiments, and will not be described again here. Similarly, the internal structure of each LED lamp bead 100 is also the same as that of the LED lamp bead 100 in the foregoing embodiments, and will not be described again here.

[0070] Further optionally, in the LED lamp string shown in Figure 3c , the LED driving chip in the LED lamp bead 100 includes a monitoring circuit electrically connected to the first signal input pin and the second signal input pin of the LED driving chip, an analysis circuit electrically connected to the monitoring circuit, and a driving circuit electrically connected to the analysis circuit; wherein the monitoring circuit is used to monitor whether a data signal is received on the first signal input pin and the second signal input pin, and in the case that any signal input pin receives a data signal, the monitoring circuit outputs the data signal and the pin identification of the any signal input pin receiving the data signal to the analysis circuit.

[0071] It is explained that data signals can be received on both signal input pins. Alternatively, if data signals are received on the two signal input pins successively, the data signal received earlier is taken as the main one, and the signal input pin receiving the data signal earlier is taken as the main pin, and the pin identification of the main pin and the data signal output value received on the main pin are parsed; and the signal input pin receiving the data signal later is taken as the backup pin, and the data signal received on the backup pin is discarded. Alternatively, if data signals are received on the two signal input pins simultaneously, the first signal input pin is taken as the main pin, and the pin identification of the main pin and the data signal output value received on the main pin are parsed; and the second signal input pin is taken as the backup pin, and the data signal received on the backup pin is discarded.

[0072] In which, different pin identifications correspond to different signal input pins, and the data signals received on different signal input pins can be different, which is related to the processing mode of the data signal by the LED driving chip (specifically, the driving circuit in the LED driving chip). In an optional embodiment, the LED driving chip (specifically, the driving circuit in the LED driving chip) in each LED lamp bead 100 is responsible for parsing the data segment required by the LED lamp bead 100 from the received data signal, and driving the LED light unit in the LED lamp bead 100 to emit light using the data segment; and then sending the data signal with the remaining data segment to the subsequent LED lamp bead 100. In this embodiment, it can be known from the first breakpoint continuation circuit and / or the second breakpoint continuation circuit provided in the foregoing embodiments that the remaining data segment included in the data signal coming from different signal input pins will be different, which leads to different processing modes of the LED driving chip in the subsequent LED lamp bead 100. Therefore, in the embodiments of the present application, different parsing modes are implemented for different signal input pins, and the parsing circuit adopts a suitable parsing mode to parse the data segment required by the LED lamp bead 100 to which it belongs from the received data signal.

[0073] Specifically, the parsing circuit is configured to receive the pin identifier and the data signal output by the monitoring circuit, parse the data segment corresponding to the LED light unit from the data signal according to the parsing mode corresponding to the pin identifier, and output the data segment to the driving circuit; the driving circuit controls the display of the LED light unit according to the data segment; wherein different signal pins correspond to different parsing modes. In combination with the above-mentioned manner of processing the data signal, if the pin identifier output by the monitoring circuit corresponds to the first signal input pin, the corresponding parsing mode is to parse the data segment required by the LED lamp bead 100 from the corresponding position in the received data signal according to the serial order between the LED lamp beads 100; if the pin identifier output by the monitoring circuit corresponds to the second signal input pin, the corresponding parsing mode not only needs to parse the data segment required by the LED lamp bead 100 from the corresponding position in the received data signal according to the serial order between the LED lamp beads 100, but also can delete other data segments (these data segments correspond to the faulty LED lamp bead 100 and belong to invalid data segments) before the data segment, so as to reduce the amount of data transmitted subsequently, save transmission and processing resources. It is stated here that the manner of processing the data signal by the LED driving chip and the corresponding parsing mode are only exemplary and are not limited thereto, and the embodiments of the present application are not limited thereto.

[0074] In the embodiment of the present application, the LED driving chip includes a monitoring circuit, an analysis circuit and a driving circuit. The monitoring circuit ensures that the data signal can be correctly identified and transmitted no matter which pin the data signal is input from; the analysis circuit processes the data according to the specific analysis method of different pins to ensure the correct extraction of data segments; and the driving circuit accurately controls the LED light-emitting unit according to the analyzed data segments to achieve the expected display effect. When the first signal input pin or the second signal input pin of the LED driving chip receives a data signal, the monitoring circuit will immediately monitor the data signal and transmit the received data signal to the analysis circuit, while sending the pin identifier of the currently received data signal to inform the analysis circuit of the source of the data signal. The analysis circuit selects the corresponding analysis method according to the received pin identifier, because different signal pins correspond to different analysis methods to ensure the accuracy of analysis. The analysis circuit extracts data segments related to the LED light-emitting unit from the data signal according to the analysis method corresponding to the pin identifier. These data segments contain specific information on how to control the LED light-emitting unit, such as brightness adjustment or color change, etc. Finally, the analysis circuit transmits these data segments to the driving circuit, and the driving circuit executes specific display control according to the received information, so that the LED lamp bead 100 emits light in the expected way. The whole process realizes seamless connection from signal monitoring, analysis to final control, allowing the same LED driving chip to flexibly control the LED light-emitting unit according to different input signals, ensuring the accuracy and efficiency of signal processing, and also improving the control flexibility and expressiveness of the LED lamp string.

[0075] Figure 3d Another structure diagram of an LED lamp string is provided for the exemplary embodiment of the present application. In the structure diagram, the data signal related structure is highlighted in Figures 3a-3c , and the power signal related and data signal related structures are completely illustrated in Figure 3d . The description of the data signal related structure and the description of the power signal related structure can be referred to the foregoing embodiment, which will not be repeated here.

[0076] Further, the embodiment of the present application also provides an LED lamp string including Figure 1The LED display screen of the illustrated LED lamp panel. The LED display screen provided by the embodiment of the application comprises: at least two LED lamp panels; the at least two LED lamp panels are spliced together in sequence to form the LED display screen; wherein at least one of the at least two LED lamp panels adopts a serial-parallel power supply mode. Optionally, all the LED lamp panels can adopt the serial-parallel power supply mode, or part of the LED lamp panels can adopt the serial-parallel power supply mode, for example, one LED lamp panel. For the LED lamp panel that does not adopt the serial-parallel power supply mode, a serial power supply mode or a parallel power supply mode can be adopted. The embodiment of the application does not limit the number of LED lamp panels included in the LED display screen, for example, it can be 2, 3, 4, 5 or 10, 30, etc., which can be determined according to the application scenario and the size of the display space. For example, three LED lamp panels D, E and F are shown in Figure 4a ; three LED lamp panels J, K and L are shown in Figure 4b ; and three LED lamp panels G, H and I are shown in Figure 4c . In addition, the LED lamp panels included in the LED display screen can be the same LED lamp panel or different LED lamp panels. Here, the same refers to the structure, type, size and power supply mode of the LED lamp panel being the same; correspondingly, the different LED lamp panels refer to at least one of the structure, type, size and power supply mode of the LED lamp panel being different. This flexibility allows the LED display screen to use the same or different LED lamp panels to meet different display requirements or application scenarios. Optionally, the same LED lamp panel is adopted in the LED display screen shown in Figures 4a-4c . Figure 4a and Figure 4b The difference between the LED display screens shown in Figure 4a and Figure 4b and Figure 4c Figure 4c part of the LED lamp panels adopt a serial power supply mode, and part of the LED lamp panels adopt a parallel power supply mode. For details, refer to the description in the subsequent embodiments.

[0077] The embodiment of the application does not limit the signal flow direction in the at least two LED lamp panels. For example, the signal flow directions in the at least two LED lamp panels are the same, or the signal flow directions of at least part of the adjacent LED lamp panels in the at least two LED lamp panels are opposite. For example, the signal flow direction of the last LED lamp panel in the at least two LED lamp panels is opposite to the signal flow directions of the other LED lamp panels. The signal flow direction here includes the flow directions of the data signal and the power signal. For one LED lamp panel, the signal flow direction can be from top to bottom, or from bottom to top, or from left to right, or from right to left. ​

[0078] Figure 4a This is a schematic diagram of an LED display screen structure provided for an exemplary embodiment of this application. Figure 4a As shown, this LED display screen consists of three LED light boards (DFs), and the number of LED light boards is only for example. These LED light boards are all powered by series-parallel power supplies, and these three LED light boards (DFs) are spliced ​​together to form a complete LED display screen. Figure 4a In the LED display shown, the controller is located at the top of the LED display, and the signal flow direction of the LED light panels (DF) is the same, that is, from top to bottom, thus ensuring that the signal transmission direction of the entire LED display is uniform. Optionally, in Figure 4a In the LED display shown, the LED strings in each LED panel can be... Figures 3a-3d The LED string structure shown is not limited to this. Furthermore, the controller for the LED light panel DF can be located at the top or bottom of the LED display screen where the LED light panel is located, or simultaneously at the top and bottom of the LED display screen. That is, a controller can be located at the top of the LED display screen, a controller can be located at the bottom, or simultaneously at both the top and bottom. Each controller is responsible for driving an LED string of a certain length, the specific length of which is not limited; for example, it can drive a string of lights 5 meters, 6 meters, or 8 meters long. These figures are merely examples, and the length of the LED string that each controller can drive can also be longer or shorter. If one controller is used, it can be located at the top or bottom of the LED display screen; when more LED light panels need to be driven, two controllers can be used, one at the top and one at the bottom of the display screen. This configuration ensures that there are no obstructions in the middle of the entire LED display screen caused by the controllers, meeting the transparency requirements of the display screen, thus enabling the LED display screen to be a transparent screen. When the controller is located at the top of the display screen, or when there are two controllers (one at the top and one at the bottom), the entire display screen can be designed as a suspended screen. This method is suitable for locations with high ceilings, such as exhibition halls, theaters, or large conference rooms, providing flexible installation options. If the controller is only placed at the bottom of the display screen, a base is usually used to support the entire display screen, making it a floor-standing form. This method is suitable for scenarios that do not require suspension, such as shop windows or small display spaces. Further optionally, the controller can also be placed on the side of the LED display screen where the LED light panels are located. The entire display screen can be designed as a side-controlled flat LED screen or a curved LED screen. This method is suitable for occasions that require side access to signals or power, such as commercial advertising, stage performances, and traffic signs. Optionally, the controller and the LED light panels can be directly electrically connected, or it can be achieved through dedicated connectors. These connectors not only ensure the reliability of the electrical connection but also facilitate installation and maintenance.Figure 4a For example, the LED lamp panel is set on the top of the LED display screen.

[0079] Figure 4b Another LED display screen structure is provided for the exemplary embodiments of the present application. As shown in the figure, the LED display screen is composed of three LED lamp panels J-L. The power supply mode of these LED lamp panels is series-parallel power supply, and the three LED lamp panels J-L are spliced together to form a complete LED display screen. In the LED display screen shown in the figure, the controller is arranged on the top of the LED display screen, and the signal flow direction of the LED lamp panels J-L is the same, i.e., from top to bottom, thereby ensuring the uniform signal transmission direction of the entire LED display screen. Figure 4b Figure 4b As shown in the figure, the LED display screen is composed of three LED lamp panels J-L. The power supply mode of these LED lamp panels is series-parallel power supply, and the three LED lamp panels J-L are spliced together to form a complete LED display screen. In the LED display screen shown in the figure, the controller is arranged on the top of the LED display screen, and the signal flow direction of the LED lamp panels J-L is the same, i.e., from top to bottom, thereby ensuring the uniform signal transmission direction of the entire LED display screen. Figure 4b Figures 3a-3d As shown in the figure, the LED display screen is composed of three LED lamp panels J-L. The power supply mode of these LED lamp panels is series-parallel power supply, and the three LED lamp panels J-L are spliced together to form a complete LED display screen. In the LED display screen shown in the figure, the controller is arranged on the top of the LED display screen, and the signal flow direction of the LED lamp panels J-L is the same, i.e., from top to bottom, thereby ensuring the uniform signal transmission direction of the entire LED display screen.

[0080] In addition, the controller of the LED lamp panel J-L can be arranged on the top, bottom or side of the LED display screen. In an optional embodiment, as shown in the figure, the controllers of the LED lamp panels J and K are arranged on the top of the display screen, and the controller of the LED lamp panel L is arranged on the bottom of the display screen, which can avoid the obstruction caused by the controller on the LED display screen and meet the transparency requirement of the display screen. Figure 4b

[0081] In an optional embodiment, the power supply mode of the LED lamp panel of the LED display screen can also be partially series power supply and partially series-parallel power supply. Figure 4c Another LED display screen structure is provided for the exemplary embodiments of the present application. As shown in the figure, the LED display screen is composed of three LED lamp panels G-I. The power supply mode of the LED lamp panel G is series power supply, and the power supply mode of the LED lamp panels H and I is series-parallel power supply, and the three LED lamp panels D-F are spliced together to form a complete LED display screen. In the LED display screen shown in the figure, the controller is arranged on the top of the LED display screen, and the signal flow direction of the LED lamp panels G-I is the same, i.e., from top to bottom, thereby ensuring the uniform signal transmission direction of the entire LED display screen. Figure 4c Figure 4c As shown in the figure, the LED display screen is composed of three LED lamp panels J-L. The power supply mode of these LED lamp panels is series-parallel power supply, and the three LED lamp panels J-L are spliced together to form a complete LED display screen. In the LED display screen shown in the figure, the controller is arranged on the top of the LED display screen, and the signal flow direction of the LED lamp panels J-L is the same, i.e., from top to bottom, thereby ensuring the uniform signal transmission direction of the entire LED display screen. Figure 4c Figures 3a-3d As shown in the figure, the LED display screen is composed of three LED lamp panels J-L. The power supply mode of these LED lamp panels is series-parallel power supply, and the three LED lamp panels J-L are spliced together to form a complete LED display screen. In the LED display screen shown in the figure, the controller is arranged on the top of the LED display screen, and the signal flow direction of the LED lamp panels J-L is the same, i.e., from top to bottom, thereby ensuring the uniform signal transmission direction of the entire LED display screen. Figure 4c ​​​​​For example, the LED lamp panel is set on the top of the LED lamp panel.

[0082] It should be noted that the terms "first", "second", etc. in this article are used to distinguish different messages, devices, modules, etc. and do not represent the order of sequence, nor limit the "first" and "second" to be different types.

[0083] It should also be noted that the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, product or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, product or device. Without more limitations, the element defined by the statement "including a" does not exclude the presence of other identical elements in the process, method, product or device including the element.

[0084] The above is only an embodiment of the present application and is not intended to limit the present application. The present application can have various modifications and changes for those skilled in the art. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the scope of claims of the present application.

Claims

1. An LED light panel, characterized in that, include: Multiple LED light strings, each LED light string includes: multiple LED beads, each LED bead is provided with a power input port and a power output port, and each LED bead internally encapsulates an LED driver chip and an LED light-emitting unit; The power input port and power output port of each LED bead are electrically connected to the power input pin and power output pin of the internal LED driver chip, respectively, so as to provide power signals to the LED light-emitting unit through the LED driver chip; In the same LED string, the power output ports and power input ports of adjacent LED beads are electrically connected to form a serial power supply line; and the serial power supply lines between adjacent LED strings are connected in parallel to form a parallel power supply line.

2. The LED light panel according to claim 1, characterized in that, The LED beads in the multiple LED light strings are arranged in rows and columns. The LED beads in the same LED light string are located in the same column, and the LED beads at the same position in different LED light strings are located in the same row. The serial power supply lines between adjacent rows of LED beads are connected in parallel to form parallel power supply lines. or, The LED beads in the multiple LED light strings are arranged in rows and columns. The LED beads in the same LED light string are located in the same row, and the LED beads in the same position in different LED light strings are located in the same column. The serial power supply lines between adjacent columns of LED beads are connected in parallel to form parallel power supply lines.

3. The LED light panel according to claim 2, characterized in that, Each LED also includes a power gating circuit disposed between the power input port and the power input pin; When the power selection circuit detects that power signals exist simultaneously on both the serial power supply line and the parallel power supply line, it connects the serial power supply line to the power input pin; or, when it detects that a power signal exists on one of the serial power supply lines and the other does not, it connects the line with the power signal to the power input pin.

4. The LED light panel according to any one of claims 1-3, characterized in that, Each LED bead is also equipped with a first signal input port and a first signal output port, a second signal input port and a second signal output port; The first signal input port, second signal input port, first signal output port, and second signal output port of each LED are electrically connected to the first signal input pin, second signal input pin, first signal output pin, and second signal output pin of the internal LED driver chip, respectively, so as to transmit data signals to the LED light-emitting unit through any signal input pin of the LED driver chip; In the same LED string, the first signal output port and the second output port of adjacent LED beads are electrically connected to the first signal input port and the second signal input port, respectively, to form a serial signal line; as well as The first signal input port and the second signal output port of each LED bead are directly electrically connected, bypassing the internal LED driver chip, to form the first breakpoint continuation line.

5. The LED light panel according to claim 4, characterized in that, Electrical connection is made between the second signal output port of the first LED bead and the second signal input port of the second LED bead in any LED string to form a second breakpoint continuation line. Wherein, the first LED bead is any LED bead on any LED string, and the second LED bead is spaced at least two LED beads apart from the first LED bead.

6. The LED light panel according to claim 5, characterized in that, The first LED and the second LED form a group of LEDs. Each LED string has one or more groups of LEDs, and different groups of LEDs have different first LEDs and second LEDs.

7. The LED light panel according to claim 6, characterized in that, In two adjacent LED groups, the first LED in the latter LED group is either the second LED in the former LED group or the LED following the second LED in the former LED group. or, In two adjacent LED groups, the first LED in the latter LED group is the LED in front of the second LED in the former LED group.

8. The LED light panel according to claim 5, characterized in that, The number of LEDs between the first LED and the second LED in different LED groups may be the same or different.

9. The LED light panel according to claim 5, characterized in that, The LED driver chip includes: a monitoring circuit electrically connected to the first signal input pin and the second signal input pin, a parsing circuit electrically connected to the monitoring circuit, and a driving circuit electrically connected to the parsing circuit; When the monitoring circuit receives a data signal at any signal input pin, it outputs the data signal and the pin identifier of the signal input pin to the parsing circuit. The parsing circuit parses the data segment corresponding to the LED light-emitting unit from the data signal according to the parsing method corresponding to the pin identifier, and outputs the data segment to the driving circuit. The driving circuit performs display control on the LED light-emitting unit according to the data segment. Different signal pins correspond to different parsing methods.

10. The LED light panel according to claim 4, characterized in that, The LED light board is electrically connected to the controller, which includes a power supply terminal, a grounding terminal, and multiple communication ports. The plurality of LED light strings are electrically connected to the plurality of communication ports respectively, for receiving data signals provided by the controller; The power input port of the first LED in the multiple LED strings and the power output port of the last LED are electrically connected to the power supply terminal and the ground terminal, respectively, to receive the power signal provided by the controller.

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