Flexible transparent LED display and device

Abstract

The application discloses a flexible transparent LED display screen, which comprises display panels and connecting pieces, wherein the display panels are at least two, and at least one display panel is arranged adjacent to another display panel; the display panel comprises LED lamp beads and a driving circuit, and the LED lamp beads are electrically connected to the driving circuit; the connecting pieces are used for connecting the adjacent two display panels; the connecting pieces comprise a flexible transparent substrate and a conductive structure; the flexible transparent substrate is arranged at the connecting position of the adjacent two display panels; the conductive structure is arranged on the flexible transparent substrate and is welded with the driving circuits of the adjacent two display panels respectively, so as to electrically connect the adjacent two display panels. The flexible transparent LED display screen has the advantages of good bending performance and high transparency.

Description

Technical Field

[0001] This invention relates to the field of display screen repair technology, and in particular to a flexible transparent LED display screen and device. Background Technology

[0002] LED displays are display devices that use light-emitting diodes (LEDs) as light-emitting elements. They offer advantages such as high brightness, low power consumption, long lifespan, and high reliability, and are widely used in various applications, including advertising, exhibitions, stage performances, and sports. With the continuous development of LED display technology, the requirements for LED displays are also increasing, especially regarding their flexibility and transparency. Flexible transparent LED displays refer to LED displays that can be bent and have a certain degree of light transmittance.

[0003] LED displays are typically spliced ​​together to achieve larger, movable display sizes. Currently, there are two main methods for splicing LED displays on the market: one is to directly weld two display panels, and the other is to connect two display panels using connectors or plugs. However, when these two splicing methods are applied to flexible transparent LED displays, the following drawbacks exist: directly welding two display panels results in insufficient bending performance of the spliced ​​display, preventing arbitrary bending; connecting two display panels using connectors or plugs leads to large gaps or protrusions at the splicing point, affecting the overall transparency and flatness of the display.

[0004] Therefore, there is an urgent need in the market for a new type of flexible transparent LED display that can overcome the shortcomings of existing solutions. Summary of the Invention

[0005] The main objective of this invention is to propose a flexible transparent LED display screen, which aims to solve the problems of insufficient bending and transparency in current spliced ​​flexible transparent LED display screens.

[0006] To achieve the above objectives, the present invention provides a flexible transparent LED display screen, comprising:

[0007] At least two display panels, each display panel being arranged adjacent to at least one of the other display panels, each display panel including LED beads and a driving circuit, the LED beads being electrically connected to the driving circuit; and

[0008] A connector for connecting two adjacent display panels. The connector includes a flexible transparent substrate and a conductive structure. The flexible transparent substrate is disposed at the connection point of the two adjacent display panels. The conductive structure is disposed on the flexible transparent substrate and is soldered to the driving circuits of the two adjacent display panels respectively, so as to electrically connect the two adjacent display panels.

[0009] In one embodiment, the conductive structure includes a conductive layer disposed on the surface of the flexible transparent substrate facing the display panel.

[0010] In one embodiment, the driving circuit includes a power supply line, a signal line, and a ground line arranged at intervals;

[0011] The conductive structure includes multiple conductive layers that correspond one-to-one with the power supply line, signal line, and ground line.

[0012] In one embodiment, the display panel has multiple sets of driving circuits arranged in parallel, and multiple sets of conductive structures are arranged in parallel on the flexible transparent substrate corresponding to the multiple sets of driving circuits.

[0013] In one embodiment, the coverage area of ​​the flexible transparent substrate is not less than the coverage area of ​​the conductive structure.

[0014] In one embodiment, the thickness of the flexible transparent substrate is at least 2 micrometers and at most 1 millimeter.

[0015] In one embodiment, the thickness of the conductive layer is at least 1 micrometer and at most 1 millimeter.

[0016] In one embodiment, the flexible transparent LED display screen further includes an encapsulation layer for encapsulating the spliced ​​display panel and the connector, and forming the outer layer of the flexible transparent LED display screen.

[0017] In one embodiment, the resistance of the driving circuit of the flexible transparent LED display screen satisfies the following condition:

[0018]

[0019] In the formula, R represents the resistance of the driving circuit; V represents the safe voltage drop of the flexible transparent LED display; P represents the spacing of the LED beads in the splicing direction of the flexible transparent LED display; A represents the operating current of the LED beads; and L is the total length of the driving circuit of the flexible transparent LED display.

[0020] In one embodiment, the resistance of the conductive structure is less than the resistance of the driving circuit.

[0021] The flexible transparent LED display screen of this application connects two adjacent display panels via connectors. The conductive structure enables connection and data / power transmission between adjacent display panels, while the flexible transparent substrate provides bending performance. This allows the connectors to deform along with the flexible transparent LED display screen when it is bent, preventing breakage or cracking at the connection point. Thus, the spliced ​​LED display screen achieves both flexibility and transparency while avoiding the insufficient bending performance issues caused by welding. Furthermore, both the flexible transparent substrate and the conductive structure in the connectors are materials with good light transmittance, having a weak impact on the light transmittance of the LED display screen, thereby ensuring its transmittance. Therefore, compared to flexible transparent LED displays obtained using traditional splicing methods, the flexible transparent LED display screen of this application has the advantages of excellent bending performance and high transparency. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0023] Figure 1 This is a structural schematic diagram of an embodiment of the flexible transparent LED display screen of the present invention;

[0024] Figure 2 for Figure 1 A partial structural diagram of the flexible transparent LED display screen is shown.

[0025] Figure 3 for Figure 1 The diagram shows the structure of a flexible transparent LED display screen where two adjacent display panels are not connected by connectors.

[0026] Figure 4 for Figure 1 The image shows a side view of the flexible transparent LED display screen.

[0027] Explanation of icon numbers:

[0028] 10. Display panel; 11. Flexible transparent substrate; 12. Driving circuit; 121. Power supply line; 122. Signal line; 123. Grounding wire; 13. LED beads; 20. Connector; 21. Flexible transparent substrate; 22. Conductive structure; 30. Encapsulation layer

[0029] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0031] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0032] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0033] This invention proposes a flexible transparent LED display screen.

[0034] In embodiments of the present invention, such as Figures 1 to 4 As shown, the flexible transparent LED display screen includes a display panel 10 and a connector 20. There are at least two display panels 10, and one display panel 10 is arranged adjacent to at least another display panel 10. The connector 20 is used to connect the two adjacent display panels 10.

[0035] Specifically, the display panel 10 includes a flexible transparent substrate 11, LED beads 13 and a driving circuit 12. The driving circuit 12 is disposed on the flexible transparent substrate 11, and the LED beads 13 are electrically connected to the driving circuit 12.

[0036] Specifically, the flexible transparent substrate 11 is the main base material of the display panel 10. It typically uses a flexible polymer material or a transparent film as the substrate. LED beads 13 are the light source of the display panel 10. LED beads 13 are typically composed of multiple LED chips, each emitting light of a specific color, such as red, green, or blue. A driving circuit 12 is disposed on the flexible transparent substrate 11 and is used to control the brightness and color of the LED beads 13. The driving circuit 12 is connected to the display driver control chip and the power supply to transmit current and driving signals to the LED beads 13. By adjusting the current and signals, the luminous intensity and color of the LED beads 13 are controlled, thereby achieving control and adjustment of the displayed content.

[0037] Furthermore, the connector 20 includes a flexible transparent substrate 21 and a conductive structure 22. The flexible transparent substrate 21 is disposed at the connection between two adjacent display panels 10, and the conductive structure 22 is disposed on the flexible transparent substrate 21 and is respectively welded to the driving circuits 12 of the two adjacent display panels 10 to electrically connect the two adjacent display panels 10.

[0038] Specifically, the flexible transparent substrate 21 typically uses a flexible polymer material or a transparent film as the base. These materials have good flexibility and bendability, allowing them to be bent, rolled, or stretched at the joints without breaking or being damaged. In addition, they have high transparency, allowing light to pass through and achieving a transparent display effect.

[0039] Furthermore, the conductive structure 22 is typically made of materials with good conductivity, such as metal wires or thin-film conductive layers. These materials can effectively conduct current and possess sufficient flexibility and transparency to meet the requirements of flexible transparent displays. In the technical solution of this application, after adjacent display panels 10 are electrically connected through the conductive structure 22, current can be smoothly transmitted in the connector 20, thereby transferring signals and electrical energy to the adjacent display panels 10.

[0040] It is understood that the flexible transparent LED display screen of this application connects two adjacent display panels 10 via connectors 20. The conductive structure 22 enables the connection and data / power transmission between adjacent display panels 10, while the flexible transparent substrate 21 provides a certain degree of bending performance. This allows the connector 20 to deform along with the flexible transparent LED display screen when it is bent, preventing breakage or cracking at the connection point of the display panels 10. Thus, the spliced ​​LED display screen achieves both flexibility and transparency while avoiding the problem of insufficient bending performance caused by welding. Furthermore, both the flexible transparent substrate 21 and the conductive structure 22 in the connector 20 are materials with good light transmittance, having a weak impact on the light transmittance of the LED display screen, thereby ensuring the light transmittance of the LED display screen. Therefore, compared to flexible transparent LED displays obtained using traditional splicing methods, the flexible transparent LED display screen of this application has the advantages of good bending performance and high transparency.

[0041] In some embodiments, the flexible transparent substrate 21 and the flexible transparent base material 11 are made of the same material. This arrangement maintains the consistency of the entire display screen. Adjacent display panels 10 and connectors 20 will have similar physical properties and optical performance, preventing uneven display effects caused by material differences. Furthermore, using the same material for the flexible transparent substrate 21 and the flexible transparent base material 11 simplifies the manufacturing process, improves production efficiency, and helps reduce the manufacturing cost of flexible transparent LED displays.

[0042] Of course, the design of this application is not limited to this. In other embodiments, there are also cases where the flexible transparent substrate 21 and the flexible transparent base material 11 use different materials. This may be to meet specific design requirements, such as using different materials in different areas to achieve specific transparency, bending performance, or flexibility. In this case, special attention needs to be paid to the compatibility between materials and the stability of the connection to ensure that the overall performance of the display panel 10 is not affected.

[0043] Alternatively, the flexible transparent substrate 11 and the flexible transparent base plate 21 can be made of polyethylene terephthalate (PET), polyetheretherketone (PEEK), polycarbonate (PC), transparent polyimide (CPI), transparent nylon (CPA), etc. All of these materials possess good flexibility and transparency, making them suitable for fabricating flexible transparent displays.

[0044] In some embodiments, the thickness of the flexible transparent substrate 21 is at least 2 micrometers and at most 1 millimeter. This range of choices can provide appropriate flexibility and strength while maintaining sufficient transparency and reliability.

[0045] Specifically, thinner flexible transparent substrates 21 (e.g., from 2 micrometers to tens of micrometers) are typically used in applications requiring greater flexibility and bending performance. Such substrates can be more easily bent, rolled, or stretched, making them suitable for display designs that require large deformations or complex curved surfaces. Thicker flexible transparent substrates 21 (e.g., from tens of micrometers to 1 millimeter) typically offer greater mechanical strength and stability. They provide better protection for the circuitry and components of the display panel 10 and offer a longer lifespan.

[0046] For example, the thickness of the flexible transparent substrate 21 can be set to 2 micrometers, 5 micrometers, 10 micrometers, 20 micrometers, 30 micrometers, 40 micrometers, 50 micrometers, 60 micrometers, 70 micrometers, 80 micrometers, 90 micrometers, 100 micrometers, 200 micrometers, 300 micrometers, 400 micrometers, 500 micrometers, 600 micrometers, 700 micrometers, 800 micrometers, 900 micrometers, 1 millimeter, etc.

[0047] In some embodiments, the conductive structure 22 includes a conductive layer disposed on the surface of the flexible transparent substrate 21 facing the display panel 10.

[0048] Specifically, the conductive layer is typically made of conductive materials, such as conductive oxides, conductive polymers, or thin metal films. The conductive layer and the driving circuitry 12 of the display panel 10 can be electrically connected via soldering or other electrical connection methods.

[0049] It is understandable that directly setting a conductive layer on the surface of the flexible transparent substrate 21 as a conductive structure 22 is a relatively simple solution that does not require additional connectors 20 or components. This reduces the material and production costs of the display panels 10 while ensuring the reliability of electrical connections between adjacent display panels 10. Furthermore, since the conductive layer is located on the surface of the flexible transparent substrate 21, the structural integrity of the flexible transparent substrate 21 can be guaranteed, thereby ensuring its structural strength. This allows the connectors 20 to provide sufficient support for the connection of adjacent display panels 10 and the bending of the flexible transparent LED display screen.

[0050] Furthermore, by setting the conductive structure 22 as a conductive layer, the flexibility of the conductive layer can be utilized to maximize the bending performance of the flexible display.

[0051] Of course, the design of this application is not limited to this. In other embodiments, conductive tape, elastic conductive wire, elastic conductive pad, elastic conductive coating, etc. can also be used as conductive structure 22.

[0052] Alternatively, a conductive layer can be fabricated on the flexible transparent substrate 21 by methods such as sputtering, electroplating, chemical plating, or calendering. These methods can be selected as needed to meet the requirements of different applications.

[0053] Alternatively, the conductive layer can be made of gold, silver, copper, nickel, aluminum, their alloys, or composite materials; it can also be a composite material of plastic and metal (i.e., a metal colloidal coating). Furthermore, the conductive layer can also be a colloidal coating made of C-stage or B-stage epoxy resin, acrylic resin, or other polyester materials and metal powders such as gold, silver, copper, nickel, aluminum, their alloys, or composite materials.

[0054] In some embodiments, the thickness of the conductive layer is at least 1 micrometer and at most 1 millimeter. This range can meet the needs of different applications. Specifically, thinner conductive layers (e.g., from 1 micrometer to tens of micrometers) typically offer greater flexibility and transparency, suitable for applications requiring high flexibility and transparency. Thicker conductive layers (e.g., from tens of micrometers to hundreds of micrometers) can provide better conductivity and mechanical strength, suitable for applications requiring higher current transmission and structural support.

[0055] In actual production, the thickness of the conductive layer can be determined according to the application requirements, the characteristics of the conductive material, and the preparation process, in order to balance factors such as conductivity, mechanical strength, and transparency.

[0056] For example, the thickness of the conductive layer can be set to 1 micrometer, 10 micrometer, 20 micrometer, 30 micrometer, 40 micrometer, 50 micrometer, 100 micrometer, 200 micrometer, 300 micrometer, 400 micrometer, 500 micrometer, 600 micrometer, 700 micrometer, 800 micrometer, 900 micrometer, 1 millimeter, etc.

[0057] In some embodiments, the drive circuit 12 includes a power supply line 121, a signal line 122, and a ground line 123 that are spaced apart.

[0058] Specifically, power supply line 121 is used to provide power, connecting the power source to the LED beads 13 and other electronic components to ensure their normal operation. Signal line 122 is used to transmit control signals, controlling the brightness, color, and display mode of the LED beads 13, etc. Grounding line 123 is used to establish a grounding connection to ensure system stability and anti-interference capability.

[0059] It is worth noting that, in order to improve the heat dissipation and light transmittance of the drive circuit 12, the power supply line 121, signal line 122 and ground line 123 are arranged in a grid pattern.

[0060] Furthermore, the conductive structure 22 includes multiple conductive layers corresponding one-to-one with the power supply line 121, signal line 122 and ground line 123, which are used to connect the power supply line 121, signal line 122 and ground line 123 on the adjacent display panel 10 respectively.

[0061] Specifically, in this embodiment, the conductive structure 22 includes three conductive layers, and these three conductive layers are respectively connected to the power supply line 121, signal line 122, and ground line 123 on the adjacent display panel 10. In some embodiments, since the driving circuit 12 may include two or more signal lines 122, the conductive structure 22 is also configured to include a corresponding number of conductive layers.

[0062] It is understandable that by setting multiple conductive layers to connect the power supply line 121, signal line 122, and ground line 123 on adjacent display panels 10 respectively, different circuits can be effectively isolated, reducing interference and cross-interference between circuits. This helps improve the stability and reliability of the circuit, ensuring the accuracy and consistency of signal transmission. On the other hand, it increases the number of current transmission channels, thereby improving the current transmission capability and reliability of the entire circuit. In addition, setting multiple conductive layers can also enhance the bending ability of the connector 20 while ensuring the structural strength of the connector 20, thus ensuring the mechanical strength and bending performance of the flexible transparent LED display panel 10.

[0063] Correspondingly, the width of the conductive layer matches the width of the connected driving circuit 12. This arrangement ensures a good electrical connection between the conductive layer and the driving circuit 12, enabling the conductive layer to effectively transmit power and signals. Simultaneously, this arrangement also ensures that the connector 20 has sufficient strength to support the bending of the flexible transparent LED display.

[0064] Alternatively, the material of the driving circuit 12 can be gold, silver, copper, nickel, aluminum and their alloys or composite materials, or it can be nano silver, indium tin oxide, conductive polymers, etc.

[0065] In some embodiments, the thickness of the drive circuit 12 is at least 1 nanometer and at most 0.5 millimeters. This range is chosen considering several factors, including circuit performance, flexibility, and manufacturing process limitations.

[0066] Specifically, a thinner driving circuit 12 provides better flexibility, allowing the display to bend and twist more freely, adapting to various curved surfaces and shapes. Furthermore, a thinner driving circuit 12 reduces the overall thickness of the display, making it lighter and more flexible and portable. Conversely, a thicker driving circuit 12 can improve the circuit performance of the flexible transparent LED display, enabling it to handle higher currents.

[0067] For example, the thickness of the driving circuit 12 can be set to 1 nanometer, 5 nanometer, 10 nanometer, 20 nanometer, 30 nanometer, 40 nanometer, 50 nanometer, 60 nanometer, 70 nanometer, 80 nanometer, 90 nanometer, 100 nanometer, 200 nanometer, 300 nanometer, 400 nanometer, 500 nanometer, 600 nanometer, 700 nanometer, 800 nanometer, 900 nanometer, 1 micrometer, 5 micrometer, 10 micrometer, 20 micrometer, 30 micrometer, 40 micrometer, 50 micrometer, 60 micrometer, 70 micrometer, 80 micrometer, 90 micrometer, 100 micrometer, 200 micrometer, 300 micrometer, 400 micrometer, 500 micrometer, etc.

[0068] In some embodiments, the display panel 10 has multiple sets of driving circuits 12 arranged in parallel, and multiple sets of conductive structures 22 are arranged in parallel on the flexible transparent substrate 21 corresponding to the multiple sets of driving circuits 12.

[0069] Specifically, in flexible transparent LED displays, multiple sets of driving circuits 12 arranged in parallel are often used to improve the circuit efficiency and response speed of the display panel 10. This means that there will be multiple independent sets of driving circuits 12 on the display panel 10, each set responsible for controlling and driving the LED beads 13 in a specific area.

[0070] To achieve this parallel arrangement, multiple sets of conductive structures 22 are arranged in parallel on the same flexible transparent substrate 21, corresponding to multiple sets of driving circuits 12. Each conductive structure 22 is connected to its corresponding driving circuit 12 and is responsible for transmitting current and signals to the corresponding LED beads 13. This design can activate multiple sets of LED beads 13 simultaneously, achieving parallel processing and thus improving the refresh rate and image quality of the display panel 10.

[0071] It is understandable that setting multiple sets of conductive structures 22 on the same flexible transparent substrate 21 can improve the structural strength of the connector 20, thereby maximizing the bending performance of the flexible transparent LED display. Furthermore, this arrangement also ensures the consistency of transparency and the uniformity of appearance at the connection points of adjacent display panels 10, thus guaranteeing the aesthetics of the flexible transparent LED display. In addition, setting multiple sets of conductive structures 22 on the same flexible transparent substrate 21 is more conducive to reducing the material and production costs of the display.

[0072] Of course, the design of this application is not limited to this. In other embodiments, multiple connectors 20 can be provided for each of the multiple sets of driving circuits 12, or two or more sets of driving circuits 12 can be connected by one connector 20.

[0073] In some embodiments, the coverage area of ​​the flexible transparent substrate 21 is not less than the coverage area of ​​the conductive structure 22.

[0074] Specifically, the coverage area of ​​the flexible transparent substrate 21 is not less than the coverage area of ​​the conductive structure 22, which means that the size of the flexible transparent substrate 21 is greater than or equal to the size of the conductive structure 22, so as to ensure that the substrate can completely cover the conductive structure 22.

[0075] It should be noted that the flexible transparent substrate 21 will be subjected to certain stress when bent or twisted. By increasing the coverage area of ​​the substrate, the stress can be distributed more evenly, reducing the possibility of local stress concentration. This helps to reduce the risk of substrate fatigue and damage, and improve the reliability and lifespan of the display screen. With this configuration, the connector 20 can provide sufficient support to ensure the bending performance and structural strength of the flexible transparent LED display screen. This design helps to reduce weak areas of the flexible transparent substrate 21 and ensures that the entire display screen will not experience excessive strain or breakage when bent or twisted, thereby improving the reliability of the display screen and extending its lifespan.

[0076] In some embodiments, the flexible transparent LED display screen further includes an encapsulation layer 30, which is used to encapsulate the spliced ​​display panel 10 and connector 20, and form the outer layer of the flexible transparent LED display screen.

[0077] Specifically, the encapsulation layer 30 can simultaneously protect the flexible transparent substrate 21, the conductive structure 22, the driving circuit 12, and the LED beads 13, and wrap around the upper and lower surfaces of all display panels 10, giving the entire LED display screen sufficient toughness and bending resistance after splicing. In addition, the encapsulation layer 30 can also prevent external factors such as dust, moisture, and chemicals from damaging the display panel 10 and connectors 20, and protect them from mechanical impacts and physical collisions.

[0078] Alternatively, the encapsulation layer 30 is typically made of a transparent or translucent material to maintain the transparency and flexibility of the display panel 10. Commonly used encapsulation materials include polymeric materials such as ethylene-vinyl acetate copolymer (EVA), polyvinyl butyral (PVB), ionic interlayer (SGP), thermoplastic polyurethane elastomer rubber (TPU), thermoplastic elastomer (TPE), silicone, or composites of the above materials. These materials have good flexibility and transparency, allowing them to adapt to the bending and curved shapes of the display screen.

[0079] In some embodiments, the resistance of the driving circuit of the flexible transparent LED display screen satisfies the following condition:

[0080]

[0081] In the formula, R represents the resistance of the driving circuit;

[0082] V represents the safe voltage drop of the flexible transparent LED display, which is the voltage drop allowed for the display under normal operating conditions;

[0083] P represents the spacing between LED beads in the splicing direction in a flexible transparent LED display screen, that is, the distance between adjacent LED beads;

[0084] A represents the operating current of the LED beads in the flexible transparent LED display, that is, the current of each LED bead when the LED display is operating at normal brightness;

[0085] L represents the length of the driving circuit of the flexible transparent LED display, that is, the total length of the driving circuit.

[0086] Specifically, when designing the resistor of a flexible transparent LED display, we can set the number of LED beads 13 connected in series on the driving circuit 12 as N, the length of the voltage drop-free driving circuit 12 (including the length of the conductive structure 22 on the connector 20) as L, and the spacing between each LED bead as P.

[0087] Therefore, the number N of LED beads 13 connected in series on the driving circuit 12 is:

[0088] N = L / P……(1);

[0089] The total current A that the zero-dropout drive circuit 12 needs to withstand Total for:

[0090] A Total =A×N……(2);

[0091] The maximum resistance R of the voltage drop-free drive circuit 12 max for:

[0092] R max =V / A Total ...(3);

[0093] By transforming formulas (1), (2), and (3), we can obtain the maximum resistance R of the voltage drop-free drive circuit 12. max for:

[0094]

[0095] Based on formula (4), we can obtain the design conditions for the resistor R of the driving circuit required for the normal operation of the flexible transparent LED display, namely:

[0096]

[0097] The above design conditions can limit the driving circuit of the flexible transparent LED display, thereby avoiding excessive voltage drop and power consumption caused by excessive resistance in the spliced ​​LED display, and thus ensuring the normal operation of the spliced ​​flexible transparent LED display.

[0098] It is worth noting that the distance between each series-connected individual LED can be equidistant or non-equidistant along the length of the electrode, and is not limited to this.

[0099] It is also worth noting that the length of the driving circuit 12, the number of LEDs, the spacing between LEDs, and the safety voltage drop can be obtained from the design standards of flexible transparent LED displays, or calculated and tested based on the corresponding sample screens.

[0100] In some embodiments, the resistance of the conductive structure 22 is less than the resistance of the driving circuit 12.

[0101] Understandably, the conductive structure 22 is a crucial component responsible for connecting the driving circuit 12 to the LED beads 13 of the display panel 10. If the resistance of the conductive structure 22 is high, while the resistance of the driving circuit 12 is low, the current will encounter a large impedance difference between the conductive structure 22 and the driving circuit 12. This will result in a large voltage drop at the conductive structure 22, potentially causing unstable current distribution and operational problems.

[0102] Therefore, the resistance of the conductive structure 22 is set to be less than the resistance of the driving circuit 12. This reduces the voltage drop at the conductive structure 22, ensuring a more uniform current distribution between the driving circuit 12 and the conductive structure 22. This helps improve the stability, reliability, and performance of the display screen and facilitates accurate calculation of the resistance limit of the driving circuit 12.

[0103] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A flexible transparent LED display screen, characterized in that, include: At least two display panels are provided, with each display panel being disposed adjacent to at least one of the other display panels. Each display panel includes a flexible transparent substrate, LED beads, and a driving circuit, with the LED beads being electrically connected to the driving circuit. as well as A connector is disposed on the same side as the LED beads on a flexible transparent substrate for connecting two adjacent display panels. The connector includes a flexible transparent substrate and a conductive structure. The flexible transparent substrate is disposed at the connection point of the two adjacent display panels. The conductive structure is disposed on the surface of the flexible transparent substrate facing the display panel and is soldered to the driving circuits of the two adjacent display panels respectively to electrically connect the two adjacent display panels. The flexible transparent LED display screen also includes an encapsulation layer, which is used to encapsulate the spliced ​​display panel and the connector, and forms the outer layer of the flexible transparent LED display screen.

2. The flexible transparent LED display screen as described in claim 1, characterized in that, The conductive structure includes a conductive layer disposed on the surface of the flexible transparent substrate facing the display panel.

3. The flexible transparent LED display screen as described in claim 2, characterized in that, The driving circuit includes power supply lines, signal lines and ground lines arranged at intervals, and the power supply lines, signal lines and ground lines are arranged in a grid pattern; The conductive structure includes multiple conductive layers that correspond one-to-one with the power supply line, signal line, and ground line.

4. The flexible transparent LED display screen as described in claim 3, characterized in that, The display panel has multiple sets of driving circuits arranged in parallel, and multiple sets of conductive structures are arranged in parallel on the flexible transparent substrate corresponding to the multiple sets of driving circuits.

5. The flexible transparent LED display screen as described in claim 4, characterized in that, The coverage area of ​​the flexible transparent substrate is not less than the coverage area of ​​the conductive structure.

6. The flexible transparent LED display screen as described in claim 4, characterized in that, The thickness of the flexible transparent substrate is at least 2 micrometers and at most 1 millimeter.

7. The flexible transparent LED display screen as described in claim 4, characterized in that, The thickness of the conductive layer is at least 1 micrometer and at most 1 millimeter.

8. The flexible transparent LED display screen as described in claim 1, characterized in that, The resistance of the driving circuit of the flexible transparent LED display screen satisfies the following condition: ; In the formula, R represents the resistance of the driving circuit; V represents the safe voltage drop of the flexible transparent LED display; P represents the spacing of the LED beads in the splicing direction of the flexible transparent LED display; A represents the operating current of the LED beads; and L is the total length of the driving circuit of the flexible transparent LED display.

9. The flexible transparent LED display screen as described in claim 1 or 8, characterized in that, The resistance of the conductive structure is less than the resistance of the driving circuit.

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