LED display panel and LED display screen

Abstract

The invention discloses an LED display panel which comprises a plurality of display panel units and a plurality of connecting strips, and each display panel unit comprises a circuit and a plurality of LED lamp beads arranged on the circuit; the plurality of connecting strips are connected with the display panel units so as to connect the plurality of display panel units into a whole and limit relative displacement of the plurality of display panel units. The invention further discloses an LED display screen adopting the LED display panel.

Description

Technical Field

[0001] This application relates to the field of LED display technology, and in particular to an LED display panel and an LED display screen having the LED display panel. Background Technology

[0002] A common LED display screen includes a base plate, a front plate, and an LED display panel sandwiched between the base plate and the front plate by an adhesive film. For larger LED display panels, manufacturing them as a single unit presents significant manufacturing challenges. Larger LED display panels can be constructed by arranging multiple display panel units (e.g., elongated display panel units). However, with this type of structure, during the lamination process, the display panel units are prone to relative displacement when the adhesive film melts, thus affecting the quality of the final LED display screen. Summary of the Invention

[0003] The technical problem to be solved by this application is to provide an LED display panel and an LED display screen using the LED display panel, wherein the multiple display panel units constituting the LED display panel are not prone to relative displacement during the manufacturing process of the LED display screen, thereby ensuring the quality of the finished LED display screen.

[0004] To solve the above-mentioned technical problems, this application adopts the technical solution described below.

[0005] On one hand, this application provides an LED display panel, comprising: a plurality of display panel units, each of the display panel units including a circuit and a plurality of LED beads disposed on the circuit; and a plurality of connecting strips connected to the display panel units to connect the plurality of display panel units into one unit and restrict the relative displacement of the plurality of display panel units.

[0006] Furthermore, the connecting strip is fixedly connected to the display panel unit.

[0007] Further, the diameter of the connecting strip's cross-section is 0.2–1.2 mm, or the diameter of the circumscribed circle of the connecting strip's cross-section is 0.3–1.2 mm, or the cross-sectional area of ​​the connecting strip is 0.03–1.2 mm². 2 .

[0008] Furthermore, the connecting strip is a metal strip.

[0009] Furthermore, the plurality of display panel units are arranged longitudinally at intervals, and the plurality of connecting strips are arranged laterally at intervals.

[0010] Furthermore, the spacing between adjacent connecting strips is 20–100 mm.

[0011] Furthermore, the display panel unit includes a printed circuit board on which the circuit is formed and a plurality of LED beads arranged in a row on the circuit.

[0012] Furthermore, the display panel unit includes a circuit made of a metal strip and a plurality of LED beads arranged in a row on the circuit.

[0013] Furthermore, the circuit includes a positive power line, a negative power line, and a data signal line, and at least one of the connecting strips is electrically connected to the positive power lines of the plurality of display panel units and / or at least one of the connecting strips is electrically connected to the negative power lines of the plurality of display panel units.

[0014] Furthermore, the circuit includes a positive power line, a negative power line, and a data signal line. Among the connecting strips, some of the connecting strips are electrically connected to the positive power lines of multiple display panel units, while some of the connecting strips are electrically connected to the negative power lines of multiple display units. The connecting strips connected to the positive power lines and the connecting strips connected to the negative power lines are alternately arranged, or all of the connecting strips are electrically connected to either the positive power lines or the negative power lines of multiple display panel units.

[0015] Furthermore, the plurality of display panel units are arranged in a longitudinal and transverse manner. Each display panel unit includes a printed circuit board on which a plurality of lines are formed and a plurality of LED beads disposed on each of the lines. Each line is electrically connected to a corresponding line of a horizontally adjacent display panel unit. The plurality of connecting lines are arranged in a longitudinal and transverse manner to connect to the plurality of display panel units.

[0016] Furthermore, vertically arranged display panel units in the same row are connected by at least two vertically arranged connecting strips, and horizontally arranged display panel units in the same row are connected by at least two horizontally arranged connecting strips.

[0017] Furthermore, the spacing between multiple longitudinally arranged adjacent connecting strips is 20-100mm, and the spacing between multiple transversely arranged adjacent connecting strips is 20-100mm.

[0018] Furthermore, the circuit includes a positive power line, a negative power line, and a data signal line, and at least one longitudinally arranged connecting strip is electrically connected to the positive power lines of multiple display panel units and / or at least one longitudinally arranged connecting strip is electrically connected to the negative power lines of multiple display panel units.

[0019] Furthermore, the circuit includes a positive power line, a negative power line, and a data signal line. Among the connecting strips, some of the vertically arranged connecting strips are electrically connected to the positive power lines of multiple display panel units, while some of the vertically arranged connecting strips are electrically connected to the negative power lines of multiple display panel units. The vertically arranged connecting strips connected to the positive power lines and the vertically arranged connecting strips connected to the negative power lines are alternately arranged, or all the vertically arranged connecting strips are electrically connected to either the positive or negative power lines of multiple display panel units.

[0020] Furthermore, at least one horizontally arranged connecting strip is electrically connected to the positive power line of the same row of display panel units and / or at least one horizontally arranged connecting strip is electrically connected to the negative power line of the same row of display panel units.

[0021] Furthermore, each display panel unit in the same horizontal row is provided with at least two horizontally arranged connecting strips, wherein at least one of the connecting strips is electrically connected to the positive power line of the display panel unit in the same horizontal row, and at least one of the connecting strips is electrically connected to the negative power line of the display panel unit in the same horizontal row.

[0022] Furthermore, the display panel unit has multiple perforated holes, and the connecting strip is located in the non-perforated area of ​​the display panel unit.

[0023] On the other hand, this application provides an LED display screen, including a base plate, a transparent panel, and an LED display board sandwiched between the base plate and the panel by transparent adhesive, wherein the LED display board is an LED display board with the structure described above.

[0024] Furthermore, the base plate is a transparent plate.

[0025] The beneficial technical effect of this application is that: multiple display panel units of the LED display panel are connected into one unit by multiple connecting strips. By restricting the display panel units with the connecting strips, it is not easy for the display panel units to shift relative to each other during the manufacturing process of the LED display screen, which would affect the quality of the finished LED display screen, thereby improving the quality of the finished LED display screen. Attached Figure Description

[0026] Figure 1 These are exploded structural diagrams of LED display panels disclosed in some embodiments.

[0027] Figure 2 yes Figure 1 A partial structural schematic diagram of the LED display panel in the disclosed embodiment.

[0028] Figure 3 This is an exploded structural diagram of an LED display panel disclosed in some other embodiments.

[0029] Figure 4 yes Figure 3 A partial structural schematic diagram of the LED display panel in the disclosed embodiment.

[0030] Figure 5 This is an exploded structural diagram of an LED display panel disclosed in some embodiments.

[0031] Figure 6 yes Figure 5 A partial structural schematic diagram of the LED display panel in the disclosed embodiment.

[0032] Figure 7 These are schematic diagrams of the structure of an LED display screen as disclosed in some embodiments. Detailed Implementation

[0033] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0034] It should be understood that, in the description of this application, unless otherwise expressly specified and limited, the term "multiple" means two or more, and the terms "longitudinal," "lateral," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the position or element referred to must have a specific orientation or be constructed in a specific orientation, and should not be construed as a limitation on this application.

[0035] The LED display panel disclosed in this application includes multiple display panel units and multiple connecting strips. Each display panel unit includes circuitry and multiple LED beads disposed on the circuitry. The multiple connecting strips connect to the display panel units to integrate them into a single unit and restrict the relative displacement of the multiple display panel units. By integrating the multiple display panel units through the multiple connecting strips, the relative displacement of the display panel units, which would affect the quality of the finished LED display, is less likely to occur during the manufacturing process of the LED display, thereby improving the quality of the manufactured LED display.

[0036] Furthermore, in the LED display panel disclosed in this application embodiment, in addition to connecting multiple display panel units into a single unit, at least one of the connecting strips can be electrically connected to the positive power line of the multiple display panel units and / or at least one of the connecting strips can be electrically connected to the negative power line of the multiple display panel units. This allows for current exchange between the various display panel units, thereby achieving overall voltage equalization of the LED display panel, improving local peak brightness, and supplementing power to the LED display panel through the connecting strips, ensuring the display quality of the LED display panel.

[0037] It is understood that the accompanying drawings are schematic diagrams and are not intended to limit this application. For example, the number and size of the display panel units shown in the drawings, the number of LED beads set in each display panel unit, etc., are not intended to limit this application.

[0038] See Figure 1 and Figure 2 In some embodiments, the LED display panel 10 includes multiple display panel units 11 and multiple connecting strips 12. Each display panel unit 11 is designed as an elongated strip, comprising a printed circuit board (PCB) with a line 110 formed thereon and multiple LED beads 111 arranged in a row on the line 110. The multiple connecting strips 12 are connected to the display panel units 11 to connect the multiple display panel units 11 into a single unit and restrict the relative displacement of the multiple display panel units 11. The LED beads 111 of this type of display panel unit 11 can be LED beads with integrated driver chips, or a separate lamp-driver solution can be used. The LED beads 111 can be disposed on the line 110 by methods such as soldering. In the embodiment shown in the figures, the line 110 includes a positive power line 1100, a negative power line 1101, and a data signal line 1102 for transmitting data signals.

[0039] Preparation such as Figure 1 and Figure 2 When making an LED display panel of this type, a long strip-shaped display panel unit 11 can be prepared first. Multiple display panel units 11 are placed on a fixture according to a preset display panel unit 11 arrangement design. Then, the connecting strip 12 is connected to the display panel unit 11 according to a preset connecting strip 12 wiring design, thereby connecting multiple display panel units 11 into one unit.

[0040] See Figure 3 and Figure 4In some embodiments, the LED display panel 10 includes multiple display panel units 11 and multiple connecting strips 12. Each display panel unit 11 is designed as a long strip and includes a line 110 made of a metal strip and multiple LED beads 111 arranged in a row on the line 110. The multiple connecting strips 12 are connected to the display panel units 11 to connect the multiple display panel units 11 into a single unit and restrict the relative displacement of the multiple display panel units 11. The LED beads 111 of this type of display panel unit 11 preferably, but not limited to, are LED beads with integrated driver chips and can be disposed on the line 11 by methods such as soldering. In the embodiment shown in the accompanying drawings, the line 110 includes a positive power line 1100, a negative power line 1101, and a data signal line 1102 for transmitting data signals.

[0041] Preparation such as Figure 3 and Figure 4 When using the LED display panel of this type, multiple LED beads 111 can be placed on a fixture according to a preset bead arrangement design. A metal strip, preferably made of copper, is used as the positive power line 1100, negative power line 1101, and data signal line 1101 and is soldered to the corresponding multiple LED beads 111 to form multiple strip-shaped display panel units 11. Then, the connecting strip 12 is connected to the display panel units 11 according to a preset connecting strip wiring design, thereby connecting multiple display panel units 11 into one unit.

[0042] Referring to the accompanying drawings, in some embodiments, multiple elongated display panel units 11 are arranged longitudinally at intervals, and multiple connecting strips 12 are arranged laterally at intervals. Preferably, the spacing between adjacent connecting strips 12 is designed to be 20-100mm, so that the number of connecting strips 12 is kept appropriate. While ensuring effective connection between each display panel unit 11, it can avoid increasing the workload of connecting the connecting strips 12 to the display panel unit 11 due to excessive number of connecting strips 12, and at the same time ensure the cutout ratio of the LED display panel 10.

[0043] The elongated display panel unit 11 can be a single-piece display panel unit or a display panel unit assembled from multiple pieces.

[0044] See Figure 5 and Figure 6In some embodiments, the LED display panel 10 includes a plurality of display panel units 11 and a plurality of connecting strips 12. The plurality of display panel units 11 are arranged in a longitudinal and transverse manner. The display panel unit 11 is designed as a block-shaped display panel unit, including a printed circuit board (PCB) on which a plurality of lines 110 are formed and a plurality of LED beads 111 disposed on each line 110. Each line 110 is electrically connected to the corresponding line 110 of the horizontally adjacent display panel unit 11 through an existing connection method such as a pin header 13. The plurality of connecting strips 12 are arranged in a longitudinal and transverse manner and connected to the plurality of display panel units 11 to connect the plurality of display panel units 11 into a whole and restrict the relative displacement of the plurality of display panel units 11.

[0045] In some embodiments, as shown in the accompanying drawings, each line 110 on the block-shaped display panel unit 11 includes a positive power line 1100, a negative power line 1101, and a data signal line 1102 for transmitting data signals. The positive power lines 1100 and negative power lines 1101 of the multiple lines 11 on the same display panel unit 11 can be designed to be electrically connected, or they can be designed to be non-electrically connected.

[0046] In some embodiments, the spacing between multiple vertically arranged adjacent connecting strips 12 is designed to be 20-100 mm, and the spacing between multiple horizontally arranged adjacent connecting strips 12 is designed to be 20-100 mm, so that the number of connecting strips 12 is maintained at an appropriate level. In order to improve the connection stability of the block display panel units 11, the display panel units 12 arranged in the same row vertically are connected by at least two vertically arranged connecting strips 12, and the display panel units 12 arranged in the same row horizontally are connected by at least two horizontally arranged connecting strips 12.

[0047] The connecting strip 12 is preferably made of a metal strip such as copper or steel. It can be fixedly connected to the display panel unit 11 by welding, thereby connecting multiple display panel units 11 into one unit. Alternatively, in other embodiments, other non-conductive non-metallic strips can be used as the connecting strip 12 and fixedly connected to the display panel unit 11 by suitable connection methods such as snap-fit ​​or bonding, thereby connecting multiple display panel units 11 into one unit. For the connecting strip 12 that does not form an electrical connection with the lines 110 of the display panel unit 11, it can be made of a conductive material such as metal or a non-conductive material such as plastic.

[0048] The connecting strip 12 is preferably made of a material with suitable rigidity, such as metal, and designed to be of suitable thickness. In some embodiments, the connecting strip 12 is a circular cross-section, preferably with a cross-sectional diameter of 0.2–1.2 mm. In other embodiments, the connecting strip 12 may also be a regular shape with a polygonal cross-section, preferably with a circumcircle diameter of 0.3–1.2 mm. Of course, in other embodiments, the connecting strip 12 may also be a connecting strip with an irregular or other regular cross-section, preferably with a cross-sectional area of ​​0.03–1.2 mm². 2 .

[0049] See Figure 5 and Figure 6 In some embodiments, the display panel unit 11 has a plurality of cutout holes 120, and the LED display panel 10 using such a display panel unit 11 can be used to manufacture a transparent LED display screen. Preferably, the connecting strip 12 is disposed in the non-cutout area of ​​the display panel unit 11 to avoid affecting the cutout ratio of the LED display panel 10.

[0050] In some embodiments, the display panel unit 11 may also be designed as a strip-shaped display panel unit containing multiple rows of lines 110 and multiple rows of LED beads 111. Such display panel unit 11 may be a display panel unit manufactured as a single piece, or it may be a display panel unit spliced ​​together. Multiple display panel units 11 are arranged longitudinally at intervals, and multiple connecting strips 12 are arranged laterally at intervals to connect multiple display panel units 11 into a single unit.

[0051] In some embodiments, at least one connecting strip 12 may be electrically connected to the positive power line 1100 of a plurality of display panel units 11 and / or at least one connecting strip 12 may be electrically connected to the negative power line 1101 of a plurality of display panel units 11 to achieve current interconnection between the various display panel units 11, thereby achieving overall voltage equalization of the LED display panel 10, improving the local peak brightness of the display, and supplementing power supply to the LED display panel 11 through the connecting strip 12 to ensure the display quality of the LED display panel 10.

[0052] like Figures 1 to 4 As shown, in this embodiment, some of the connecting strips 12 are electrically connected to the positive power line 1100 of the line 110 of the plurality of display panel units 11, and some of the connecting strips 12 are electrically connected to the negative power line 1101 of the line 110 of the plurality of display panel units 11. Preferably, the connecting strips 12 connected to the positive power line 1100 and the connecting strips 12 connected to the negative power line 1101 are alternately arranged.

[0053] In other embodiments, the connecting strips 12 may be electrically connected to the positive power lines 1100 or negative power lines 1101 of the lines 110 of the multiple display panel units 11. Alternatively, in other embodiments, only one connecting strip 12 may be selected to be connected to the positive power line 1100 of the line 110, and / or only one connecting strip 12 may be selected to be connected to the negative power line 1101 of the line 110.

[0054] like Figures 5 and 6 As shown, in this embodiment, some of the vertically arranged connecting strips 12 are electrically connected to the positive power line 1100 of the lines 110 of the multiple display panel units 11, and some of the vertically arranged connecting strips 12 are electrically connected to the negative power line 1101 of the lines 110 of the multiple display panel units 11. Preferably, the vertically arranged connecting strips 12 connected to the positive power line 1100 and the vertically arranged connecting strips 12 connected to the negative power line 1101 are alternately arranged.

[0055] In other embodiments, the vertically arranged connecting strips 12 may be electrically connected to the positive power lines 1100 or negative power lines 1101 of the lines 110 of the multiple display panel units 11. In other embodiments, only one of the vertically arranged connecting strips 12 may be selected to be connected to the positive power lines 1100 of the lines 110, and / or only one of the vertically arranged connecting strips 12 may be selected to be connected to the negative power lines 1101 of the lines 110.

[0056] In some embodiments, at least one horizontally arranged connecting strip 12 is electrically connected to the positive power line 1100 of the display panel units 11 in the same row and / or at least one horizontally arranged connecting strip 12 is electrically connected to the negative power line 1101 of the display panel units 11 in the same row. Preferably, the display panel units 11 in the same horizontal row are provided with at least two horizontally arranged connecting strips 12, wherein at least one connecting strip 12 is electrically connected to the positive power line 1100 of the display panel units 11 in the same horizontal row, and at least one connecting strip 12 is electrically connected to the negative power line 1101 of the display panel units 11 in the same horizontal row.

[0057] See Figure 7In some embodiments, the disclosed LED display screen includes a base plate 20, a transparent panel 30, and an LED display board 10 sandwiched between the base plate 20 and the panel 30 by transparent adhesive 40. The LED display board 10 is the LED display board disclosed in the above embodiments. In the embodiment shown in the accompanying drawings, transparent adhesive 40 is provided between the LED display board 10 and the base plate 20, and between the LED display board 10 and the panel 30. In other embodiments, transparent adhesive 40 may be provided only between the LED display board 10 and the base plate 20, or between the LED display board 10 and the panel 30.

[0058] In some embodiments, the base plate 20 also uses a transparent panel, thus the resulting LED display is a transparent LED display.

[0059] In some embodiments, the transparent adhesive 40 may be selected from suitable transparent adhesives in the prior art, including ethylene-vinyl acetate copolymer (EVA) film and polyvinyl butyral (PVB) film. In some embodiments, the panel 30 may be selected from suitable transparent materials in the prior art, such as tempered glass, PC transparent sheet, and PET film, and the base plate may be selected from suitable transparent materials in the prior art, such as tempered glass or PC transparent sheet.

[0060] LED displays can be manufactured using a lamination process. The base plate 20, transparent adhesive 40, LED display board 10, and panel 30 are stacked according to a predetermined design. The stacked product to be pressed is placed in a vacuum laminator for vacuum lamination, thereby obtaining an LED display.

[0061] The above description is merely a preferred embodiment of this application and is not intended to limit the application in any way. Those skilled in the art can make various equivalent changes and improvements based on the above embodiments, and all equivalent changes or modifications made within the scope of the claims should fall within the protection scope of this application.

Claims

1. An LED display panel, characterized in that, The LED display panel includes: Multiple display panel units, each of the display panel units including circuitry and multiple LED beads disposed on the circuitry; Multiple connecting strips are connected to the display panel units to connect the multiple display panel units into one unit and restrict the relative displacement of the multiple display panel units.

2. The LED display panel as described in claim 1, characterized in that, The connecting strip is fixedly connected to the display panel unit.

3. The LED display panel as described in claim 1, characterized in that, The connecting strip has a cross-sectional diameter of 0.2–1.2 mm, or a cross-sectional circumcircle diameter of 0.3–1.2 mm, or a cross-sectional area of ​​0.03–1.2 mm². 2 .

4. The LED display panel as described in claim 1, characterized in that, The connecting strip is a metal strip.

5. The LED display panel as described in any one of claims 1 to 4, characterized in that, The multiple display panel units are arranged at longitudinal intervals, and the multiple connecting strips are arranged at transverse intervals.

6. The LED display panel as described in claim 5, characterized in that, The spacing between adjacent connecting strips is 20–100 mm.

7. The LED display panel as described in claim 5, characterized in that, The display panel unit includes a printed circuit board on which the aforementioned circuit is formed and a plurality of LED beads arranged in a row on the aforementioned circuit.

8. The LED display panel as described in claim 5, characterized in that, The display panel unit includes a circuit made of metal strips and a plurality of LED beads arranged in a row on the circuit.

9. The LED display panel according to any one of claims 1 to 4, characterized in that, The circuit includes a positive power line, a negative power line, and a data signal line, and at least one of the connecting strips is electrically connected to the positive power lines of the plurality of display panel units and / or at least one of the connecting strips is electrically connected to the negative power lines of the plurality of display panel units.

10. The LED display panel according to any one of claims 1 to 4, characterized in that, The circuit includes a positive power line, a negative power line, and a data signal line. Among the connecting strips, some of the connecting strips are electrically connected to the positive power lines of multiple display panel units, while some of the connecting strips are electrically connected to the negative power lines of multiple display units. The connecting strips connected to the positive power lines and the connecting strips connected to the negative power lines are alternately arranged, or all of the connecting strips are electrically connected to either the positive power lines or the negative power lines of multiple display panel units.

11. The LED display panel according to any one of claims 1 to 4, characterized in that, Multiple display panel units are arranged in a longitudinal and transverse manner. Each display panel unit includes a printed circuit board on which multiple lines are formed and multiple LED beads disposed on each of the lines. Each line is electrically connected to a corresponding line of a horizontally adjacent display panel unit. Multiple connecting lines are arranged in a longitudinal and transverse manner to connect to the multiple display panel units.

12. The LED display panel as claimed in claim 11, characterized in that, Vertically arranged display panel units in the same row are connected by at least two vertically arranged connecting strips, and horizontally arranged display panel units in the same row are connected by at least two horizontally arranged connecting strips.

13. The LED display panel as claimed in claim 11, characterized in that, The spacing between multiple adjacent connecting strips arranged longitudinally is 20-100mm, and the spacing between multiple adjacent connecting strips arranged laterally is 20-100mm.

14. The LED display panel as described in claim 11, characterized in that, The circuit includes a positive power line, a negative power line, and a data signal line. At least one longitudinally arranged connecting strip is electrically connected to the positive power lines of multiple display panel units and / or at least one longitudinally arranged connecting strip is electrically connected to the negative power lines of multiple display panel units.

15. The LED display panel as described in claim 11, characterized in that, The circuit includes a positive power line, a negative power line, and a data signal line. Among the connecting strips, some of the vertically arranged connecting strips are electrically connected to the positive power lines of multiple display panel units, while some of the vertically arranged connecting strips are electrically connected to the negative power lines of multiple display panel units. Alternatively, all the vertically arranged connecting strips are electrically connected to either the positive or negative power lines of multiple display panel units.

16. The LED display panel as described in claim 14, characterized in that, At least one horizontally arranged connecting strip is electrically connected to the positive power line of the same row of display panel units and / or at least one horizontally arranged connecting strip is electrically connected to the negative power line of the same row of display panel units.

17. The LED display panel as described in claim 14, characterized in that, The display panel units in the same horizontal row are provided with at least two horizontally arranged connecting strips, wherein at least one of the connecting strips is electrically connected to the positive power line of the display panel units in the same horizontal row, and at least one of the connecting strips is electrically connected to the negative power line of the display panel units in the same horizontal row.

18. The LED display panel as described in claim 11, characterized in that, The display panel unit has multiple cutouts, and the connecting strip is located in the non-cutout area of ​​the display panel unit.

19. An LED display screen, characterized in that, The LED display screen includes a base plate, a transparent panel, and an LED display board sandwiched between the base plate and the panel by transparent adhesive. The LED display board is the LED display board according to any one of claims 1 to 18.

20. The LED display screen as described in claim 19, characterized in that, The base plate is a transparent plate.

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