LED display screen
By setting multiple light source sequences and staggered RGB unit structures in the LED display, the problem of low pixel density in the prior art is solved, achieving higher pixel density and better picture quality, while simplifying circuit design and heat dissipation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUIZHOU JUFEI OPTOELECTRONICS CO LTD
- Filing Date
- 2025-04-27
- Publication Date
- 2026-04-21
AI Technical Summary
Existing LED displays have low pixel density, making it difficult to improve image quality, and their compact arrangement can affect wiring and heat dissipation.
It employs a multi-column light source sequence, with each column containing red, blue, and green LED light sources to form an RGB unit. Adjacent columns of light sources are staggered, and any two adjacent light sources can be combined with another column of light sources to form a pixel unit. The units are electrically connected via control circuitry and the LED light sources are encapsulated with an adhesive layer.
It increased pixel density, enhanced image quality, simplified circuit layout, improved heat dissipation, and reduced production costs.
Smart Images
Figure CN224154584U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of LED technology, and in particular to an LED display screen. Background Technology
[0002] With the continuous advancement of LED technology, the requirements for the brightness and image quality of LED displays are becoming increasingly stringent. The image quality of an LED display largely depends on the number of pixels displayed. To improve the image quality and make it more detailed, it is necessary to increase the pixel density of the display.
[0003] Existing LED displays typically consist of a simple linear arrangement of three LED light sources—red, green, and blue—forming a pixel unit. Multiple pixel units are then arranged in an array along the row and column directions. This arrangement results in low pixel density on the same area of the LED display. If the pixel density is increased by arranging them too tightly, it can affect the wiring. Densely arranged pixel units also increase the cost of the LED light sources used, and dense wiring can also cause heat dissipation problems.
[0004] Therefore, the low pixel density of existing LED displays makes it difficult to improve the quality of the displayed images. Utility Model Content
[0005] To address the aforementioned problems, the present invention aims to provide an LED display screen that can solve the problem of low pixel density and difficulty in improving the display quality of existing LED displays.
[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution:
[0007] An LED display screen includes:
[0008] Substrate; and
[0009] A series of light sources are arranged in several columns on the substrate at intervals. Each column of the light source sequence includes several LED light sources arranged at uniform intervals. Any three consecutive LED light sources in each column of the light source sequence include a red LED light source, a blue LED light source, and a green LED light source to form an RGB unit. Any two adjacent columns of the light source sequence are staggered so that any two adjacent first LED light sources and second LED light sources in any column are combined with a third LED light source in another adjacent column to form a pixel unit. The third LED light source is located between the first LED light sources and the second LED light sources in the row direction. The first LED light source, the second LED light source, and the third LED light source are arranged in a triangular structure, and the three include a red LED light source, a blue LED light source, and a green LED light source.
[0010] In one feasible embodiment, the positive terminals of all the LED light sources in the same column of the light source sequence or the negative terminals of all the LED light sources are connected together through a first control line disposed on the substrate.
[0011] In one feasible embodiment, a first control line is provided between every two adjacent columns of the light source sequence, and the positive electrode of all the LED light sources in the two adjacent columns of the light source sequence or the negative electrode of all the LED light sources is connected to the first control line.
[0012] In one feasible embodiment, in a plurality of light source sequences, the LED light sources that are spaced one column apart and two columns apart are arranged in the same order, and the LED light sources located in the same row direction are light sources of the same color. The positive or negative terminals of all the LED light sources in the same row direction are connected together through a second control line disposed on the substrate.
[0013] In one feasible embodiment, the LED light source is disposed on the front side of the substrate, the second control circuit is disposed on the back side of the substrate, and conductive holes are provided on the substrate through both sides, and the LED light source and the second control circuit are electrically connected through the conductive holes.
[0014] In one possible embodiment, a driver chip is also included, which is disposed on the back side of the substrate.
[0015] In one feasible embodiment, an encapsulating adhesive layer is further included, the encapsulating adhesive layer comprising at least a black adhesive film disposed on the surface of the substrate and wrapping around the side of the LED light source.
[0016] In one feasible embodiment, the encapsulating adhesive layer further includes a transparent adhesive film disposed on the black adhesive film and covering the top of the LED light source.
[0017] In one feasible embodiment, the encapsulating adhesive layer further includes a transparent protective film covering the transparent adhesive film.
[0018] In one feasible embodiment, the line connecting the positive and negative electrodes of each LED light source is parallel to the column direction of the light source sequence, or the line connecting the positive and negative electrodes of each LED light source is perpendicular to the column direction of the light source sequence.
[0019] By adopting the above technical solution, this utility model has at least the following beneficial effects:
[0020] The LED display screen provided by this utility model sets up multiple columns of light source sequences. In each column, any three consecutive LED light sources, including red, blue, and green LED light sources, form a basic RGB unit. At the same time, the light source sequences of adjacent columns are staggered, so that any two adjacent first and second LED light sources in any column can be combined with a third LED light source in another adjacent column to form a pixel unit. Compared with the conventional method of forming pixel units in a single row or column, the forms of pixel units are more diverse, thereby increasing the pixel density. Under the same area and arrangement density, more pixels can be generated, which helps to improve the picture quality of the LED display screen. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of an existing LED display screen structure.
[0022] Figure 2 This is a schematic diagram of the front structure of the first type of LED display screen provided in this embodiment of the utility model;
[0023] Figure 3 This is a schematic diagram of a partial cross-sectional structure of an LED display screen provided in an embodiment of this utility model;
[0024] Figure 4 This is a schematic diagram of the first type of substrate front partial pad arrangement structure provided in this utility model embodiment;
[0025] Figure 5 This is a schematic diagram of a partial structure on the back of the substrate provided in the first embodiment of the present invention;
[0026] Figure 6 This is a schematic diagram of the front structure of the second type of LED display screen provided in this embodiment of the utility model;
[0027] Figure 7 This is a schematic diagram of the second type of substrate front partial pad arrangement structure provided in this embodiment of the utility model;
[0028] Figure 8 This is a partial structural diagram of the back side of the substrate provided in the second embodiment of the present invention;
[0029] Figure 9 This is a schematic diagram of the third type of substrate front partial pad arrangement structure provided in this embodiment of the utility model;
[0030] Figure 10 This is a schematic diagram of a partial structure on the back of the third type of substrate provided in this embodiment of the present invention.
[0031] In the attached diagram, 1 is the substrate; 11 is the conductive hole; 2 is the light source sequence; 21 is the red LED light source; 22 is the blue LED light source; 23 is the green LED light source; 24 is the first light source sequence; 25 is the second light source sequence; 3 is the RGB unit; 41 is the first LED light source; 42 is the second LED light source; 43 is the third LED light source; 5 is the pixel unit; 6 is the solder pad; 7 is the control circuit; 71 is the first control circuit; 72 is the second control circuit; 8 is the encapsulating adhesive layer; 81 is the black adhesive film; 82 is the transparent adhesive film; 83 is the transparent protective film; 9 is the driver chip; and 100 is the LED pixel unit. Detailed Implementation
[0032] The technical solution of this utility model patent will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0033] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0035] like Figure 1 The above, Figure 1This is a schematic diagram of a conventional LED display screen structure. In this conventional LED display screen, each LED pixel unit 100 mainly consists of a red LED light source (R), a green LED light source (G), and a blue LED light source (B) arranged in a linear fashion, thus forming a series of LED pixel units 100 arranged in rows and columns. However, it is obvious that the LED pixel units 100 in the row direction are independent of each other and there is no correlation or combination relationship between them. The pixel density can only be achieved by simply reducing the spacing, which makes it difficult to achieve better picture quality requirements.
[0036] See Figures 2-3 , Figure 2 This is a schematic diagram of the front structure of the first type of LED display screen provided in this embodiment. Figure 3 This is a partial cross-sectional structural diagram of the LED display screen provided in this embodiment. The LED display screen provided in this embodiment includes:
[0037] Substrate 1; and
[0038] A number of light source sequences 2 are arranged at intervals on the substrate 1. Each column of the light source sequence 2 includes a number of LED light sources arranged at uniform intervals. Any three consecutive LED light sources in each column of the light source sequence 2, including a red LED light source 21, a blue LED light source 22, and a green LED light source 23, form an RGB unit 3. Any two adjacent columns of the light source sequence 2 are staggered so that any two adjacent first LED light sources 41 and second LED light sources 42 in any column are combined with a third LED light source 43 in another adjacent column to form a pixel unit 5. The third LED light source 43 is located between the first LED light source 41 and the second LED light source 42 in the row direction. The first LED light source 41, the second LED light source 42, and the third LED light source 43 are arranged in a triangular structure, and the three include the red LED light source 21, the blue LED light source 22, and the green LED light source 23.
[0039] It is understood that the substrate 1 in this embodiment is mainly used for mounting LED light sources. In the art, it is generally a PCB board or carrier board, etc. Specifically, when the substrate 1 in this embodiment is applied to the display field, it can serve as a display backplane, and when applied to the lighting field, it can serve as a lighting substrate. The substrate 1 in this embodiment includes a substrate body. The shape of the substrate body is not strictly limited and can be square, circular, or irregular. The substrate body can be made of rigid material, such as, but not limited to, phenolic paper laminate, epoxy paper laminate, polyester glass mat laminate, epoxy glass cloth laminate, BT resin board, or glass plate; the substrate body can also be made of flexible material, such as, but not limited to, polyester film, polyimide film, or fluorinated ethylene propylene film. In some examples, corresponding circuits can be integrated into or on the substrate body according to application requirements, such as, but not limited to, circuits connected to the LED light source and driving circuits.
[0040] It is understood that the LED light source in this embodiment mainly refers to LED chips in the field of LED displays. In terms of size classification, the LED chips in this embodiment can be at least one of Mini LED chips, Micro LED chips, ordinary LED chips with a size larger than Mini LED chips, or large-size LED chips. In addition, when the specific LED light source is mounted on the substrate 1, in terms of the distribution of LED chip electrodes, it can include at least one of flip-chip LED chips, upright LED chips, and vertical LED chips. Specific installation and other implementation details will not be further described here.
[0041] It is understandable that, such as Figure 2As shown, each dashed box contains three linearly arranged LED light sources that form an RGB unit 3. It can be understood that in the row and column arrangement of RGB units 3 on the substrate 1, the number of RGB units 3 in each row or column can be the same or different. That is, the head or tail of each row or column can be aligned or not aligned. Specifically, the number of RGB units 3 in each row or column can be adjusted according to the actual shape of the substrate 1. For example, if the substrate 1 is rectangular, it is preferable that the number of RGB units 3 in each column or row is the same and evenly spaced. If it is hexagonal or circular, the rows and columns do not necessarily have the same number of RGB units 3. The specific number can be arranged according to the shape to fill the required area of the substrate 1. More specific situations will not be described further here. In addition to the influence of the shape of the substrate 1, the specific arrangement number can be designed by those skilled in the art according to actual needs. Furthermore, when arranging the three LED light sources within a single RGB unit 3, the arrangement can be one of the following combinations: red-blue-green, red-green-blue, green-red-blue, green-blue-red, blue-red-green, or blue-green-red. This embodiment primarily uses red-green-blue as an example for explanation, but the above arrangement can also be selected according to actual needs. It should be noted that if one of the sorting methods is selected, then preferably the sorting of the three LED light sources within each RGB unit 3 of the same light source sequence 2 is the same, which will not be further described here. It can also be understood that the distance between two adjacent LED light sources in the same column or row direction is the same, so that the LED light sources are arranged evenly with intervals, resulting in a uniform structure that is easy to design.
[0042] It is understood that the red LED light source 21, the blue LED light source 22, and the green LED light source 23 within the RGB unit 3 correspond to three LED chips. The specific types of LED chips can be conventionally used. For example, the blue LED light source 22 and the green LED light source 23 can be gallium nitride-based LED chips, while the red LED light source 21 can be a gallium arsenide-based LED chip. Of course, it is understood that in this embodiment, the red LED light source 21, the blue LED light source 22, and the green LED light source 23 mainly refer to the color or wavelength of the emitted light. The specific chips can be designed by combining other structures. For example, in some other examples, all LED chips in the LED light source can also be blue light-emitting LED chips. In order for some of the LED chips to emit green light and red light respectively, a corresponding light conversion layer can be set on the light-emitting surface of these LED chips. This will not be described further here.
[0043] It is understandable that, such as Figure 2 The area enclosed by the dashed triangle in the middle contains three triangularly arranged LED light sources that form a pixel unit 5. Figure 2 For example, pixel unit 5 can be composed of two LED light sources in the first light source sequence 24 and one LED light source in the second light source sequence 25. Alternatively, it can be composed of two LED light sources in the second light source sequence 25 and one LED light source in the first light source sequence 24. That is, the first LED light source 41 and the second LED light source 42 can be from the first light source sequence 24 or the second light source sequence 25. The third LED light source can belong to another adjacent light source sequence. (The specific details can be found in the above description and...) Figure 2 Simply understand it.
[0044] In addition, the first LED light source 41, the second LED light source 42 and the third LED light source 43 are arranged in a triangular structure. They can be set as isosceles triangles, equilateral triangles or acute triangles, as long as they form the pixel unit 5. The specific details can be adjusted according to actual needs, and will not be described further here.
[0045] Furthermore, the first LED light source 41, the second LED light source 42, and the third LED light source 43 include red LED light source 21, blue LED light source 22, and green LED light source 23. The designations "first," "second," and "third" are merely simple distinctions; the specific LED colors corresponding to these three can be determined based on actual circumstances and are not strictly limited. For example... Figure 2 The first LED light source 41, the second LED light source 42, and the third LED light source 43 can be one of the combinations of red-blue-green, red-green-blue, green-red-blue, green-blue-red, blue-red-green, and blue-green-red in the order of red, blue, green, and green. For example, the first LED light source 41 can be one of blue, red, or green light sources, while the second LED light source 42 and the third LED light source 43 correspond to the other two colors of light sources. The specifics will not be described further here.
[0046] like Figures 4-5 As shown, Figure 4 This is a schematic diagram of the first type of substrate front partial pad arrangement structure provided in this embodiment. Figure 5 This is a partial structural diagram of the back side of the first type of substrate provided in this embodiment. Several pads 6 are located on the front side of the substrate 1. LED light sources are soldered and fixed to the substrate 1 via these pads 6. It can be understood that the + / - pads 6 are connected to the positive and negative terminals of the LED light source.
[0047] It is understood that the number of pads 6 and their arrangement on the front side of the substrate 1 in this embodiment can be flexibly set according to application requirements. For example, multiple pads 6 can be provided, and the multiple pads 6 can be arranged in an array on the substrate 1. In some examples of this embodiment, the material of the pads 6 can be, but is not limited to, copper, silver, gold, etc. In this embodiment, the pads 6 on the front side of the substrate 1 can be used for, but is not limited to, electrical connection with the positive and negative electrodes of the LED light source, and can also be connected to other electronic devices.
[0048] Furthermore, it is understood that the row and column in this embodiment refer to both rows and columns. The row and column are only used as relative descriptions. Those skilled in the art can change the column in this embodiment to a row by changing its direction, or change the row to a column by changing its direction. No strict limitation is imposed here.
[0049] In this embodiment, the positive electrodes of all the LED light sources in the same column of the light source sequence 2 or the negative electrodes of all the LED light sources are connected together through a first control line disposed on the substrate 1.
[0050] In this embodiment, as Figure 4 As shown, a first control line 71 is provided between each two adjacent columns of the light source sequence 2, and the positive electrode of all the LED light sources or the negative electrode of all the LED light sources in the two adjacent columns of the light source sequence 2 is connected to the first control line 71.
[0051] Specifically, in this embodiment, the positive terminals of the three LEDs within each RGB unit 3 may be connected via the same first control line 71, while the negative terminals are not required; or the negative terminals of the three LEDs may be connected via the same first control line 71, while the positive terminals are not required. For example... Figure 2 As shown in the figure, in this embodiment, by setting a first control line 71 between two adjacent light source sequences 2, the negative terminals of the LED light sources of the two adjacent light source sequences 2 are all connected to the first control line 71. In general, the arrangement of lines can be reduced, the design difficulty of the substrate 1 can be reduced, and the number of lines can be reduced, thereby simplifying the manufacturing process and also helping to dissipate heat.
[0052] In this embodiment, as Figure 2 and Figure 4 As shown, in the plurality of columns of the light source sequence 2, the LED light sources that are spaced one column apart and two columns apart are arranged in the same order, and the LED light sources located in the same row direction are of the same color. The positive or negative terminals of all the LED light sources in the same row direction are connected together through the second control line 72 provided on the substrate 1.
[0053] Similarly, in this specific embodiment, the positive terminals of all LED light sources in the same row direction may be connected through the same second control line, while the negative terminals are not required; or the negative terminals of all LED light sources in the same row direction may be connected through the same two second control lines, while the positive terminals are not required. For example... Figure 4 As shown in the figure, in this embodiment, by setting a second control line 72 on all the LED light sources along the same row direction on the back side of the substrate 1, the positive electrode of the LED light source in the same row is connected to the second control line 72. In general, the arrangement of the lines can be reduced, the design difficulty of the substrate 1 can be reduced, and the number of lines can be reduced, thereby simplifying the manufacturing process and also helping to dissipate heat.
[0054] It is understandable that the first control circuit 71 and the second control circuit 72 are configured to correspond to the positive and negative terminals of the LED light source, so one of them is connected to the positive terminal and the other is connected to the negative terminal. Figure 4 In this case, the first control line 71 is connected to the negative terminal, and the second control line 72 is connected to the positive terminal. Other cases will not be further illustrated here.
[0055] In this embodiment, combined with Figures 4-5 The LED light source is disposed on the front side of the substrate 1, and the second control circuit 72 is disposed on the back side of the substrate 1. Conductive holes 11 are provided on both sides of the substrate 1, and the LED light source and the second control circuit 72 are electrically connected through the conductive holes 11. The conductive holes 11 can be filled with copper-plated or other metal materials to achieve wire connection, which is a conventional process in this field and will not be further described here.
[0056] It is understood that the first control line 71 and the second control line 72 may be disposed on the front side of the substrate 1 and the other on the back side. In this embodiment, the second control line 72 is disposed on the back side of the substrate 1 as an example, and the corresponding first control line 71 is disposed on the front side of the substrate 1. In other embodiments, they may be disposed in reverse order, which will not be further described here.
[0057] In this embodiment, as Figure 3 As shown, the substrate also includes a driver chip 9, which is disposed on the back side of the substrate 1. It is understood that the main function of the driver chip 9 is to control and manage the current and brightness of the LED light source. The driver chip 9 typically integrates functions such as current regulation, voltage regulation, and temperature protection to ensure stable operation of the LED light source and extend its lifespan. The driver chip 9 can be selected from existing technologies according to actual needs, and will not be further described here.
[0058] In this embodiment, as Figure 3As shown, it also includes an encapsulating adhesive layer 8, which includes at least a black adhesive film 81, which is disposed on the surface of the substrate 1 and wraps around the side of the LED light source.
[0059] Furthermore, it can be understood that the encapsulating adhesive layer 8 in this embodiment is formed by pressing the LED light source onto the front side of the substrate 1 after each LED light source is disposed on the front side of the substrate 1. After pressing, the black adhesive film 81 of the encapsulating adhesive layer 8 is disposed on the front side of the substrate 1 and wraps around the side of the LED light source, so as to cover the area between each LED light source and each pad 6, and the top light-emitting surface of each LED light source is exposed outside the black adhesive film 81. Therefore, after each LED light source is soldered to the corresponding pad 6 on the front side of the substrate 1, the surface of the pad 6 is covered by a black adhesive film 81. Compared with the existing solder paste covering the surface of the pad 6, which is silver, this embodiment can utilize the black optical properties of the adhesive film 81 to absorb the incident light, thereby preventing the pad 6 from reflecting light due to its silver surface, which can improve the contrast. It also ensures that the top light-emitting surface of each LED light source is exposed to the black adhesive film 81, which can improve the light output of each LED light source and reduce the power consumption and heat generation of each LED light source. Furthermore, since the black adhesive film 81 also covers the area between each LED light source on the substrate 1, it prevents the area outside the pad 6 on the front side of the substrate 1 from reducing the contrast of the LED light source due to reflection, which can further improve the display or lighting effect. Moreover, it is not necessary to make the front side of the substrate 1 black by spraying a black ink layer or other methods, which can simplify the manufacturing process, reduce the manufacturing cost, and reduce the thickness of the display panel by omitting the black ink layer.
[0060] Furthermore, since the black adhesive film 81 used in this embodiment preferably has a certain degree of adhesion, it is easier to bond with the substrate 1 and the LED light source, which can improve airtightness and provide better protection for the LED light source. At the same time, during the pressing process, the fluidity of the black adhesive film 81 can be used to fully fill the gaps between the substrate 1 and the LED light source, which can further improve the contrast. In some other examples of this embodiment, the black adhesive film 81 can only cover the part of the side of the LED light source near the bottom surface of the LED light source, while the part of the side of the LED light source near its top light-emitting surface is exposed outside the black adhesive film 81. That is, the black adhesive film 81 can only cover a part of the side of the LED light source. This arrangement allows a part of the light emitted from the side of the LED light source to be emitted directly without passing through the black adhesive film 81, thereby improving the contrast of the LED display screen and further improving the light output efficiency of the LED light source. More specific embodiments will not be described in detail here.
[0061] In this embodiment, the thickness of the black adhesive film 81 can be flexibly set according to application requirements. For example, in one example, the thickness of the black adhesive film 81 can be, but is not limited to, 5μm to 200μm. Here, μm is the unit micrometer. In this embodiment, the thickness of the black adhesive film 81 is the thickness before the black adhesive film 81 is pressed onto the substrate 1. In this embodiment, in order to ensure the light absorption effect of the black adhesive film 81, a black adhesive layer with a transmittance range of 0%-30% can be used. In this embodiment, the black adhesive film 81 can be made of various black insulating adhesive materials, such as, but not limited to, insulating adhesives doped with carbon black materials.
[0062] In this embodiment, the encapsulating adhesive layer 8 further includes a transparent adhesive film 82, which is disposed on the black adhesive film 81 and covers the top of the LED light source.
[0063] It is understood that the included transparent film 82 can provide further protection for each LED light source, and light conversion materials or diffusion materials can be added to the transparent film 82 as needed to adjust and improve the luminous effect of the LED light source. In this embodiment, the light transmittance of the transparent film 82 can be, but is not limited to, 30% to 100%, and its thickness can be 5μm to 300μm. In this embodiment, the transparent film 82 can be a composite adhesive layer composed of at least two sub-adhesive layers, or a single-layer adhesive layer with a single-layer adhesive layer structure. In some application scenarios, the transparent film 82 can include at least one of the following: a transparent adhesive layer, a diffusion adhesive layer mixed with diffusion particles, or a light-emitting conversion adhesive layer with light conversion particles or a QD (Quantum Dots) film. More specific embodiments are not further described here.
[0064] In this embodiment, the encapsulating adhesive layer 8 further includes a transparent protective film 83, which covers the transparent adhesive film 82.
[0065] It is understood that the transparent protective film 83 can further improve the protection performance of the LED light source, and the thickness of the transparent protective film 83 in this embodiment can also be flexibly set according to requirements, for example, it can be set to, but not limited to, 10μm to 300μm. In addition, the transparent protective film 83 in this embodiment can be a composite layer structure composed of at least two sub-adhesive layers, or it can be a single-layer structure, and the transparent protective film 83 can be made of, but not limited to, transparent adhesive layers or plastic sheets, etc. More specific embodiments will not be further described here.
[0066] In this embodiment, the line connecting the positive and negative electrodes of each LED light source is parallel to the column direction of the light source sequence 2, or the line connecting the positive and negative electrodes of each LED light source is perpendicular to the column direction of the light source sequence 2.
[0067] Specifically, such as Figure 4As shown in the figure, in the case where the line connecting the positive and negative electrodes of each LED light source is parallel to the column direction of the light source sequence 2, the corresponding situation is as follows: Figure 5 As shown, the spacing of the second control line 72 is wider, which facilitates circuit design and heat dissipation.
[0068] In addition, such as Figure 6 As shown, Figure 6 This embodiment provides a schematic diagram of the front structure of the second type of LED display screen. Figure 6 When the line connecting the positive and negative electrodes of each LED light source is perpendicular to the column direction of the light source sequence, the corresponding situation is as follows: Figures 7-8 As shown, Figure 7 This is a schematic diagram of the second type of substrate front partial pad arrangement structure provided in this embodiment. Figure 8 This is a partial structural diagram of the back side of the second type of substrate provided in this embodiment. The spacing of the second control lines 72 can be made narrower, the LED light source arrangement can be made more compact, and the pixel density is higher. It is understood that... Figures 7-8 The case in this example is where the first control line 71 is connected to the positive electrode of the LED light source, and the second control line 72 is connected to the negative electrode of the LED light source.
[0069] In addition, such as Figures 9-10 As shown, Figure 9 This is a schematic diagram of the third type of substrate front partial pad arrangement structure provided in this embodiment. Figure 10 This is a schematic diagram of a partial structure on the back side of the third type of substrate provided in this embodiment. Figures 9-10 The diagram shows another circuit arrangement where the line connecting the positive and negative terminals of each LED light source is perpendicular to the column direction of the light source sequence. Figures 9-10 In the case where the positive electrode of the LED light source is connected to the first control line 71 and the negative electrode of the LED light source is connected to the second control line 72, and the first control line 71 is disposed on the back of the substrate 1 and the second control line 72 is disposed on the front of the substrate 1, the LED display screen in this embodiment can be realized. Further details will not be described in detail here. Those skilled in the art can understand and implement it in a simple way based on the above description and illustration.
[0070] By adopting the above technical solution, this utility model has at least the following beneficial effects:
[0071] The LED display screen provided by this utility model sets up multiple columns of light source sequences. In each column, any three consecutive LED light sources, including red, blue, and green LED light sources, form a basic RGB unit. At the same time, the light source sequences of adjacent columns are staggered in the column direction, so that any two adjacent first and second LED light sources in any column can be combined with a third LED light source in another adjacent column to form a pixel unit. Compared with the conventional method of forming pixel units in a single row or column, the forms of pixel units are more diverse, thereby increasing the pixel density. Under the same area and arrangement density, more pixels can be generated, which helps to improve the picture quality of the LED display screen.
[0072] Although the present invention has been described in detail above with general descriptions and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.
Claims
1. An LED display screen, characterized in that, include: substrate; as well as A series of light sources are arranged in several columns on the substrate at intervals. Each column of the light source sequence includes several LED light sources arranged at uniform intervals. Any three consecutive LED light sources in each column of the light source sequence include a red LED light source, a blue LED light source, and a green LED light source to form an RGB unit. Any two adjacent columns of the light source sequence are staggered so that any two adjacent first LED light sources and second LED light sources in any column are combined with a third LED light source in another adjacent column to form a pixel unit. The third LED light source is located between the first LED light sources and the second LED light sources in the row direction. The first LED light source, the second LED light source, and the third LED light source are arranged in a triangular structure, and the three include a red LED light source, a blue LED light source, and a green LED light source.
2. The LED display screen of claim 1, wherein, The positive terminals of all LED light sources in the same column of the light source sequence or the negative terminals of all LED light sources are connected together through a first control line disposed on the substrate.
3. The LED display screen of claim 2, wherein, A first control line is provided between each pair of adjacent light source sequences, and the positive or negative terminals of all LED light sources in the two adjacent light source sequences are connected to the first control line.
4. The LED display screen of claim 1, wherein, In the several columns of light source sequences, the LED light sources that are spaced one column apart and two columns apart are arranged in the same order, and the LED light sources located in the same row direction are light sources of the same color. The positive or negative terminals of all the LED light sources in the same row direction are connected together through a second control line provided on the substrate.
5. The LED display screen of claim 4, wherein, The LED light source is disposed on the front side of the substrate, and the second control circuit is disposed on the back side of the substrate. The substrate has conductive holes extending through both sides, and the LED light source and the second control circuit are electrically connected through the conductive holes.
6. The LED display screen of claim 1, wherein, It also includes a driver chip, which is disposed on the back side of the substrate.
7. The LED display screen of claim 1, wherein, It also includes an encapsulating adhesive layer, which includes at least a black adhesive film disposed on the surface of the substrate and wrapping around the side of the LED light source.
8. The LED display screen of claim 7, wherein, The encapsulating adhesive layer also includes a transparent adhesive film, which is disposed on the black adhesive film and covers the top of the LED light source.
9. The LED display screen of claim 8, wherein, The encapsulating adhesive layer also includes a transparent protective film, which covers the transparent adhesive film.
10. The LED display screen of claim 1, wherein, The line connecting the positive and negative electrodes of each LED light source is parallel to the column direction of the light source sequence, or the line connecting the positive and negative electrodes of each LED light source is perpendicular to the column direction of the light source sequence.