Display screen

Abstract

The utility model provides a display screen which comprises a substrate, an ink layer, lamp beads and an oleophobic and hydrophobic layer. The substrate comprises a plate body and a bonding pad arranged on the plate body. The ink layer is arranged on the surface of the board body. And the lamp beads are fixed on the bonding pads. The surfaces, deviating from the substrate, of the lamp beads are light-emitting faces, and light emitted by the lamp beads is emitted out of the light-emitting faces. And the oleophobic and hydrophobic layer is arranged on the light-emitting surface of the lamp bead. The ink can flow out from the surface of the oleophobic and hydrophobic layer and move to the surface of the plate body to form an ink layer. The surface, close to the light-emitting face, of the oleophobic and hydrophobic layer is complementary and matched with the light-emitting face. The light-emitting surface of the lamp bead is provided with the oleophobic and hydrophobic layer, and the flowability of the ink on the surface of the light-emitting surface is improved by utilizing the oleophobic and hydrophobic properties of the oleophobic and hydrophobic layer, so that the ink is not left on the surface of the oleophobic and hydrophobic layer in the process of forming the ink layer, and the light emitted by the lamp bead can completely penetrate through the oleophobic and hydrophobic layer; the light-emitting effect of the lamp beads is ensured, and the color consistency of the display screen is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of display screens, and particularly relates to a display screen. Background Art

[0002] With the continuous progress of LED (Light Emitting Diode) display screen technology, the requirement for color consistency of LED display screens is getting higher and higher.

[0003] The production process of an LED display screen is: SMT - aging - inkjet - assembly - screen erection - calibration. Among them, after the inkjet process, it is often easy to have the phenomenon that the base color of the PCB (Printed Circuit Board) is different, and this phenomenon will cause the problem of ink color difference in the LED display screen.

[0004] To solve the above problems, the prior art improves the inkjet process. For example, different colors of ink are used as the base color of the PCB or different methods are used to achieve ink coating, etc., to solve the difference in the base color of the PCB.

[0005] However, with the decreasing pitch of the lamp beads in the LED display screen, the inkjet process in the prior art has certain limitations: in the process of spraying black ink on the PCB between the gaps of adjacent lamp beads using the equipment nozzle, it is necessary to align the equipment nozzle with the gap between adjacent lamp beads. This process has extremely high requirements for spraying stability, and it often occurs that the black ink is sprayed onto the surface of the lamp beads due to unstable spraying and finally dries and remains on the surface of the lamp beads, which will affect the light emission curve of the lamp beads and thus affect the color consistency of the LED display screen. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a display screen with relatively high color consistency.

[0007] To achieve the above purpose, the utility model adopts the following technical solutions:

[0008] According to one aspect of the present application, the present application provides a display screen, including:

[0009] A substrate, which includes a plate body and pads provided on the plate body;

[0010] An ink layer, which is provided on the surface of the plate body;

[0011] Lamp beads, which are fixed on the pads; the surface of the lamp beads facing away from the substrate is the light - emitting surface, and the light emitted by the lamp beads is emitted from the light - emitting surface;

[0012] An oleophobic and hydrophobic layer is provided on the light-emitting surface of the lamp bead; the ink can flow out from the surface of the oleophobic and hydrophobic layer and move to the surface of the plate body to form the ink layer; the surface of the oleophobic and hydrophobic layer close to the light-emitting surface is complementary and adapted to the light-emitting surface.

[0013] In some embodiments, the light-emitting surface of the lamp bead is provided with pores;

[0014] The oleophobic and hydrophobic layer includes a main body portion and bumps protruding from the surface of the main body portion. The main body portion is attached to the light-emitting surface of the lamp bead, and the bumps are received and filled in the pores of the lamp bead.

[0015] In some embodiments, the light-emitting surface of the lamp bead protrudes away from the substrate to form a first arc surface, and the surface of the main body portion close to the light-emitting surface of the lamp bead is recessed away from the lamp bead to form a second arc surface. The radian of the first arc surface is consistent with that of the second arc surface.

[0016] In some embodiments, the surface of the oleophobic and hydrophobic layer away from the lamp bead is a horizontal plane, or the surface of the oleophobic and hydrophobic layer away from the lamp bead is an arc surface protruding away from the lamp bead.

[0017] In some embodiments, the surface of the oleophobic and hydrophobic layer away from the lamp bead is smooth.

[0018] In some embodiments, the thickness of the oleophobic and hydrophobic layer is 10 nm to 1000 nm.

[0019] In some embodiments, the oleophobic and hydrophobic layer is a polytetrafluoroethylene layer, a silicon dioxide layer, an organosilicon compound layer, or a polymer nanocomposite layer.

[0020] In some embodiments, the ink layer is black.

[0021] In some embodiments, the lamp bead includes a light-emitting body, a lead, and an injection molding body. The light-emitting body is disposed inside the injection molding body and is used for emitting light; the injection molding body has the light-emitting surface; one end of the lead extends into the injection molding body and is connected to the side surface of the light-emitting body facing away from the light-emitting surface, and the other end of the lead is located outside the injection molding body facing away from the light-emitting surface and is attached and fixed to the pad. The lead is used to realize the electrical connection between the light-emitting body and the pad.

[0022] In some embodiments, the number of the pads is multiple, and the multiple pads are arranged in an array and spaced apart on the plate body;

[0023] The number of the lamp beads is multiple, and each lamp bead is fixedly connected to at least one pad.

[0024] As can be seen from the above technical solutions, the utility model has at least the following advantages and positive effects:

[0025] In the display screen of the present application, in the present application, by providing an oil-repellent and water-repellent layer on the light-emitting surface of the lamp beads, and utilizing the oil-repellent and water-repellent properties of the oil-repellent and water-repellent layer, the fluidity of the ink on its surface is improved, so that during the formation of the ink layer, the ink splashed onto the oil-repellent and water-repellent layer will directly flow along the oil-repellent and water-repellent layer to the surface of the plate body, rather than remaining on the surface of the oil-repellent and water-repellent layer, to ensure that the light emitted by the lamp beads can completely penetrate the oil-repellent and water-repellent layer, and to ensure good light-emitting effects of the lamp beads, thereby improving the color consistency of the display screen.

[0026] Moreover, since the surface of the oil-repellent and water-repellent layer close to the light-emitting surface is complementary and adapted to the light-emitting surface, the oil-repellent and water-repellent layer can better adhere and be fixed to the light-emitting surface of the lamp beads, thereby improving the stability of the oil-repellent and water-repellent layer.

[0027] In addition, the provision of the oil-repellent and water-repellent layer can also reduce the stability requirements for ink spraying, which is convenient for operation and can greatly improve the efficiency of ink spraying. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 Shows a schematic structural diagram of a display screen during inkjet printing in the prior art

[0029] Figure 2 Is a schematic structural diagram of the display screen in this embodiment.

[0030] Figure 3 Is Figure 2 An enlarged structural diagram of part A in

[0031] Figure 4 Is Figure 3 The exploded structural diagram of

[0032] Figure 5 Shows a schematic structural diagram of the display screen in this embodiment during inkjet printing.

[0033] The description of the reference numerals is as follows:

[0034] 100, inkjet device;

[0035] 1, substrate; 11, plate body; 12, pad; 2, ink layer; 3, lamp bead; 31, light-emitting surface; 32, first arc surface; 33, pin; 34, injection molding body; 4, oil-repellent and water-repellent layer; 41, second arc surface; 5, welding layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0036] The typical embodiments embodying the features and advantages of the present utility model will be described in detail in the following description. It should be understood that the present utility model can have various variations in different embodiments, all of which do not depart from the scope of the present utility model, and the descriptions and illustrations therein are essentially for illustrative purposes and not for limiting the present utility model.

[0037] In the description of the present application, it should be understood that in the embodiments shown in the drawings, the indication of the direction or position relationship (such as up, down, left, right, front and back, etc.) is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. When these elements are in the positions shown in the drawings, these descriptions are appropriate. If the description of the positions of these elements changes, then the indication of these directions also changes accordingly.

[0038] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, the meaning of "a plurality" is two or more unless otherwise specifically defined.

[0039] Figure 1 The structural schematic diagram of the display screen during inkjet in the prior art is shown.

[0040] Reference Figure 1 , in the prior art, during the process of spraying black ink on the PCB board in the gap between adjacent lamp beads using the device nozzle, it is necessary to align the device nozzle with the gap between adjacent lamp beads so that the ink only falls into the gap between adjacent lamp beads. However, this process has extremely high requirements for the stability of spraying, and it often occurs that due to unstable spraying, the black ink is sprayed onto the surface of the lamp beads and finally dries and remains on the surface of the lamp beads, which will affect the light emission curve of the lamp beads and thus affect the color consistency problem of the LED display screen.

[0041] To solve the above problems, the present application optimizes the structure of the display screen before inkjet, thereby avoiding ink remaining on the surface of the lamp beads and further improving the color consistency of the display screen.

[0042] The following will describe in detail the specific embodiments of the display screen of the present application with reference to the accompanying drawings.

[0043] Figure 2 This is the structural schematic diagram of the display screen in this embodiment. Figure 3 For Figure 2 the enlarged structural schematic diagram at A in

[0044] Reference Figure 2 andFigure 3 The display screen includes a substrate 1, an ink layer 2, lamp beads 3, and an oleophobic and hydrophobic layer 4. The substrate 1 includes a plate body 11 and pads 12 provided on the plate body 11. The ink layer 2 is disposed on the surface of the plate body 11. The lamp beads 3 are fixed to the pads 12. The surface of the lamp beads 3 facing away from the substrate 1 is a light-emitting surface 31, and the light emitted by the lamp beads 3 is emitted from the light-emitting surface 31. The oleophobic and hydrophobic layer 4 is provided on the light-emitting surface 31 of the lamp beads 3. The ink can flow out from the surface of the oleophobic and hydrophobic layer 4 and move to the surface of the plate body 11 to form the ink layer 2. The surface of the oleophobic and hydrophobic layer 4 close to the light-emitting surface 31 is complementary and adapted to the light-emitting surface 31.

[0045] In this application, by providing the oleophobic and hydrophobic layer 4 on the light-emitting surface 31 of the lamp beads 3 and utilizing the oleophobic and hydrophobic properties of the oleophobic and hydrophobic layer 4, the fluidity of the ink on its surface is improved, so that during the formation of the ink layer 2, the ink splashed onto the oleophobic and hydrophobic layer 4 will directly flow along the oleophobic and hydrophobic layer 4 to the surface of the plate body 11 without remaining on the surface of the oleophobic and hydrophobic layer 4, ensuring that the light emitted by the lamp beads 3 can completely pass through the oleophobic and hydrophobic layer 4, ensuring good light-emitting effects of the lamp beads 3, and further improving the color consistency of the display screen.

[0046] Moreover, since the surface of the oleophobic and hydrophobic layer 4 close to the light-emitting surface 31 is complementary and adapted to the light-emitting surface 31, the oleophobic and hydrophobic layer 4 can be better adhered and fixed to the light-emitting surface 31 of the lamp beads 3, thereby improving the stability of the oleophobic and hydrophobic layer 4.

[0047] In addition, the setting of the oleophobic and hydrophobic layer 4 can also reduce the stability requirements for ink spraying, making it convenient for operation and greatly improving the efficiency of ink spraying.

[0048] Reference Figure 2 and Figure 3 , the substrate 1 includes a plate body 11 and pads 12 provided on the plate body 11.

[0049] The number of the pads 12 is multiple, and the multiple pads 12 are arranged in an array on the surface of the plate body 11.

[0050] The ink layer 2 is disposed on the surface of the plate body 11 and is used to cover and shield the circuits on the plate body 11, etc., to achieve color consistency.

[0051] In this embodiment, the surface of the ink layer 2 facing away from the plate body 11 can be flush with the surface of the pads 12 facing away from the plate body 11, which can improve the flatness of the overall structure surface formed by the ink layer 2 and the substrate 1.

[0052] In this embodiment, the ink layer 2 is black and has high covering properties, which can better shield the circuits on the plate body 11, etc., to ensure color consistency and improve the overall visual effect of the display screen.

[0053] In this embodiment, the ink layer 2 is formed by drying the ink sprayed onto the surface of the plate body 11 by an inkjet device.

[0054] The lamp beads 3 are fixed on the pads 12. In this embodiment, the number of lamp beads 3 is multiple, and each lamp bead 3 is fixedly connected to at least one pad 12 to achieve the electrical connection between each lamp bead 3 and the substrate 1.

[0055] Figure 4 For Figure 3 the exploded structure schematic diagram in

[0056] Refer to Figures 2 to 4 , each lamp bead 3 includes a light-emitting surface 31 on the surface facing away from the substrate 1, and the light emitted by the lamp bead 3 is emitted from the light-emitting surface 31.

[0057] In this embodiment, the light-emitting surface 31 of the lamp bead 3 bulges towards the direction away from the substrate 1 to form a first arc surface 32, thus expanding the area of the light-emitting surface 31, enabling more light to be emitted through the light-emitting surface 31, increasing the light-emitting angle of the lamp bead 3, thereby improving the viewing angle of the display screen and enhancing the display effect of the display screen.

[0058] In this embodiment, the light-emitting surface 31 of the lamp bead 3 has pores.

[0059] In this embodiment, each lamp bead 3 includes a light-emitting body, a lead 33, and an injection-molded body 34.

[0060] The light-emitting body is used to emit light. The light-emitting body is arranged inside the injection-molded body 34, and the injection-molded body 34 can protect the light-emitting body.

[0061] The injection-molded body 34 has a light-emitting surface 31 for the light emitted by the light-emitting body to be emitted.

[0062] One end of the lead 33 extends into the injection-molded body 34 and is connected to the side surface of the light-emitting body facing away from the light-emitting surface 31. The other end of the lead 33 is located outside the injection-molded body 34 facing away from the light-emitting surface 31 and is fixedly attached to the pad 12. The lead 33 is used to achieve the electrical connection between the light-emitting body and the pad 12. Specifically, a welding layer 5 is provided between the lead 33 and the pad 12, and the welding layer 5 is used to achieve the welding and fixing between the lead 33 and the pad 12. Among them, the welding layer 5 is formed by the solidification of the liquid tin formed after the solder paste is melted.

[0063] In this embodiment, the outer edge of the pad 12 extends outward beyond the outer circumference of the lead 33 or is flush with the outer circumference of the lead 33, so that the end surface of the lead 33 facing away from the light-emitting surface 31 can be completely fixedly attached to the pad 12, ensuring the power-on effect between the lead 33 and the pad 12. Exemplarily, the pad 12 can extend outward beyond the outer circumference of the lead 33 along the circumferential direction, or a part of the outer edge extends outward beyond the outer circumference of the lead 33, and another part of the outer edge is flush with the outer circumference of the lead 33.

[0064] Each light-emitting bead 3 has at least one pin 33, and each pin 33 is correspondingly and fixedly attached to a pad 12. Exemplarily, the light-emitting bead 3 includes four pins 33, and the four pins 33 are arranged in an array. The four pins 33 of each light-emitting bead 3 are correspondingly and fixedly attached to four adjacent pads 12 arranged in an array on the board body 11 one by one.

[0065] Reference Figure 2 、 Figure 3 , in this embodiment, the oil-repellent and water-repellent layer 4 is disposed on the light-emitting surface 31 of the light-emitting bead 3. It has oil-repellent and water-repellent properties, which can improve the fluidity of the ink on its surface. During the formation of the ink layer 2, the ink splashed onto the oil-repellent and water-repellent layer 4 will directly flow along the oil-repellent and water-repellent layer 4 to the surface of the board body 11 and will not remain on the surface of the oil-repellent and water-repellent layer 4. In this way, it can ensure that the light emitted by the light-emitting bead 3 can completely pass through the oil-repellent and water-repellent layer 4 to ensure good light-emitting effect of the light-emitting bead 3, thereby improving the color consistency of the display screen. In addition, the setting of the oil-repellent and water-repellent layer 4 can also reduce the stability requirements for ink spraying, so that during the inkjet process, it is not necessary to align the ink outlet of the inkjet device 100 with the gap between adjacent light-emitting beads 3, that is, the ink outlet of the inkjet device 100 can be located at any position corresponding to the board body 11. This can simplify and facilitate the ink spraying operation, and is also convenient for adapting to the ink spraying operation of the board body 11 fixed with light-emitting beads 3 having different spacings, which can greatly improve the ink spraying efficiency.

[0066] In this embodiment, the surface of the oil-repellent and water-repellent layer 4 close to the light-emitting surface 31 is complementary and adapted to the light-emitting surface 31, so that the oil-repellent and water-repellent layer 4 can better fit and be fixed to the light-emitting surface 31 of the light-emitting bead 3, thereby improving the stability of the oil-repellent and water-repellent layer 4.

[0067] The oil-repellent and water-repellent layer 4 includes a main body portion and bumps protruding from the surface of the main body portion.

[0068] Among them, the main body portion is attached to the light-emitting surface 31 of the light-emitting bead 3. Specifically, the surface of the main body portion close to the light-emitting surface 31 of the light-emitting bead 3 is recessed in a direction away from the light-emitting bead 3 to form a second arc surface 41, and the curvature of the first arc surface 32 is the same as that of the second arc surface 41, so that the main body portion can better fit with the light-emitting bead 3.

[0069] The bump is accommodated and filled in the pores of the lamp bead 3, and is matched with the main body to complementarily adapt to the shape of the light-emitting surface 31 of the lamp bead 3, so that the oil-repellent and water-repellent layer 4 can be completely combined with the light-emitting surface 31, improving the structural stability and adhesion of the oil-repellent and water-repellent layer 4, making the oil-repellent and water-repellent layer 4 not easy to peel off and not easy to separate from the light-emitting surface 31 of the lamp bead 3, so that the oil-repellent and water-repellent layer 4 can still remain stable under long-term use and complex environments. For example, in frequent cleaning and contact operations, the oil-repellent and water-repellent layer 4 can still firmly adhere to the light-emitting surface 31 of the lamp bead 3. Moreover, the cooperation between the bump and the main body can also improve the sealing performance and wear resistance of the light-emitting surface 31 of the lamp bead 3, eliminate the gap between the oil-repellent and water-repellent layer 4 and the light-emitting surface 31, prevent ink from splashing into the gap, and thus ensure the light-emitting effect of the lamp bead 3.

[0070] In this embodiment, the surface of the oil-repellent and water-repellent layer 4 away from the lamp bead 3 is a horizontal plane to improve the structural flatness. At this time, since the surface of the main body of the oil-repellent and water-repellent layer 4 close to the light-emitting surface 31 is complementarily adapted to the light-emitting surface 31 of the lamp bead 3, it is convenient to ensure that the surface of the formed oil-repellent and water-repellent layer 4 away from the lamp bead 3 is a horizontal plane.

[0071] In other embodiments, the surface of the oil-repellent and water-repellent layer 4 away from the lamp bead 3 can also be a convex arc surface facing away from the lamp bead 3. In this way, the area of the surface of the oil-repellent and water-repellent layer 4 away from the lamp bead 3 is enlarged, and more light can be emitted through the oil-repellent and water-repellent layer 4, increasing the light-emitting angle of the lamp bead 3, thereby improving the viewing angle of the display screen and enhancing the display effect of the display screen.

[0072] In this embodiment, the shapes of the surfaces of the oil-repellent and water-repellent layers 4 away from the lamp beads 3 on each lamp bead 3 are the same, which can ensure the consistency of the light-emitting angles of each lamp bead 3, thereby improving the display effect and color consistency of the display screen.

[0073] In this embodiment, the surface of the oil-repellent and water-repellent layer 4 away from the lamp bead 3 is smooth, which can reduce friction and resistance, help improve the flow performance of fluids such as ink on its surface, and reduce residues.

[0074] In this embodiment, the thickness of the oil-repellent and water-repellent layer 4 is 10 nm to 1000 nm. This nanoscale thickness can not only provide the required performance improvement (hydrophobic / oily) on the surface of the lamp bead 3, but also will not significantly increase the original thickness of the lamp bead 3.

[0075] Among them, the thicknesses of the oil-repellent and water-repellent layers 4 on each lamp bead 3 are the same, which can ensure the consistency of the light-emitting angles of each lamp bead 3, thereby improving the display effect and color consistency of the display screen.

[0076] In this embodiment, the oil-repellent and water-repellent layer 4 is a polytetrafluoroethylene layer, a silicon dioxide layer, a silicone compound layer or a polymer nanocomposite layer. That is, the oil-repellent and water-repellent layer 4 is formed by film-forming of high-molecular nano materials such as polytetrafluoroethylene (PTFE), silicon dioxide, silicone compounds, polymer nanocomposites, etc.

[0077] Among them, the materials used for the oil-repellent and water-repellent layers 4 on each lamp bead 3 are the same, which can ensure the consistency of the oil-repellent and water-repellent properties of the surfaces of each oil-repellent and water-repellent layer 4.

[0078] In this embodiment, the oil-repellent and water-repellent layer 4 is integrally formed. Exemplarily, the oil-repellent and water-repellent layer 4 is formed by means such as spin coating or chemical vapor deposition, so that the high-molecular nano material uniformly covers the light-emitting surface 31 of the lamp bead 3, without obvious uneven thickness or holes. This uniformity contributes to the consistency of the water / oil repellency on the surface of each lamp bead 3. Moreover, by using the above method for coating the high-molecular nano material, during the coating process, the high-molecular nano material can first fill the pores of the light-emitting surface 31 of the lamp bead 3, and then uniformly cover the light-emitting surface 31 of the lamp bead 3.

[0079] In other embodiments, the oil-repellent and water-repellent layer 4 can also be formed by means such as spraying, dipping, printing, etc., and the specific method is determined according to needs and is not limited herein.

[0080] Exemplarily list a method for forming the above display screen:

[0081] Provide a substrate 1 and a plurality of lamp beads 3, and mount the lamp beads 3 on the pads 12 of the substrate 1 through a chip mounter to form a semi-finished display screen. Then, perform an aging test on the substrate 1 of the semi-finished display screen to screen and remove the lamp beads 3 that are not fully fixed. Then, uniformly spray the high-molecular nano material on the light-emitting surface 31 of the lamp beads 3 through a device (such as a spin coater, a vapor deposition device, etc.), so that the high-molecular nano material first fills the pores of the light-emitting surface 31 of the lamp beads 3, and then is uniformly distributed on the light-emitting surface 31 of the lamp beads 3. Wait for the high-molecular nano material to form a film to form an oil-repellent and water-repellent layer on the light-emitting surface 31 of the lamp beads 3. Figure 5 Shows the schematic diagram of the inkjet process structure of the display screen in this embodiment. Refer to Figure 5 , spray the ink towards the plate body 11 through the inkjet device 100. During this process, there is no need to limit the position where the ink outlet of the inkjet device 100 is aligned. The ink splashed on the surface of the oil-repellent and water-repellent layer 4 will slide along the surface of the oil-repellent and water-repellent layer 4 to the plate body 11 and finally dry to form an ink layer 2. Then, perform processes such as assembly, screen erection, and calibration in sequence to form a display screen.

[0082] From the above technical solutions, it can be seen that the present utility model has at least the following advantages and positive effects:

[0083] In this application, an oil-repellent and water-repellent layer is provided on the light-emitting surface of the lamp bead, and the oil-repellent and water-repellent properties of the oil-repellent and water-repellent layer are utilized to improve the fluidity of the ink on its surface. During the formation of the ink layer, the ink splashed onto the oil-repellent and water-repellent layer will directly flow along the oil-repellent and water-repellent layer to the surface of the plate body, rather than remaining on the surface of the oil-repellent and water-repellent layer, so as to ensure that the light emitted by the lamp bead can completely pass through the oil-repellent and water-repellent layer, ensuring good light-emitting effect of the lamp bead, and further improving the color consistency of the display screen.

[0084] Moreover, since the surface of the oil-repellent and water-repellent layer close to the light-emitting surface is complementary and adapted to the light-emitting surface, the oil-repellent and water-repellent layer can better fit and be fixed on the light-emitting surface of the lamp bead, thereby improving the stability of the oil-repellent and water-repellent layer.

[0085] In addition, the setting of the oil-repellent and water-repellent layer can also reduce the stability requirements for ink spraying, which is convenient for operation and can greatly improve the efficiency of ink spraying.

[0086] Although the present utility model has been described with reference to several exemplary embodiments, it should be understood that the terms used are illustrative and exemplary, rather than restrictive. Since the present utility model can be embodied in many forms without departing from the spirit or essence of the utility model, it should be understood that the above-described embodiments are not limited to any of the foregoing details, but should be broadly interpreted within the spirit and scope defined by the appended claims. Therefore, all changes and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A display screen, characterized in that, Comprising: A substrate, which includes a board body and pads provided on the board body; An ink layer, which is disposed on the surface of the board body; A lamp bead, which is fixed on the pad; the surface of the lamp bead facing away from the substrate is a light-emitting surface, and the light emitted by the lamp bead is emitted from the light-emitting surface; An oil-repellent and water-repellent layer, which is disposed on the light-emitting surface of the lamp bead; The ink can flow out from the surface of the oil-repellent and water-repellent layer and move to the surface of the board body, thereby forming the ink layer; the surface of the oil-repellent and water-repellent layer close to the light-emitting surface is complementary and adapted to the light-emitting surface.

2. The display screen according to claim 1, wherein The light-emitting surface of the lamp bead is provided with pores; The oil-repellent and water-repellent layer includes a main body portion and bumps protruding from the surface of the main body portion. The main body portion is attached to the light-emitting surface of the lamp bead, and the bumps are accommodated and filled in the pores of the lamp bead.

3. The display screen according to claim 2, wherein, The light-emitting surface of the lamp bead bulges away from the substrate to form a first arc surface, and the surface of the main body portion close to the light-emitting surface of the lamp bead depresses away from the lamp bead to form a second arc surface. The radian of the first arc surface is consistent with that of the second arc surface.

4. The display screen according to claim 1, characterized in that, The surface of the oil-repellent and water-repellent layer away from the lamp bead is a horizontal plane, or the surface of the oil-repellent and water-repellent layer away from the lamp bead is an arc surface protruding away from the lamp bead.

5. The display screen according to claim 1, characterized in that, The surface of the oil-repellent and water-repellent layer away from the lamp bead is smooth.

6. The display screen according to claim 1, wherein The thickness of the oil-repellent and water-repellent layer is 10 nm to 1000 nm.

7. The display screen according to claim 1, characterized in that The oil-repellent and water-repellent layer is a polytetrafluoroethylene layer, a silicon dioxide layer, an organosilicon compound layer or a polymer nanocomposite layer.

8. The display screen according to claim 1, characterized in that, The ink layer is black.

9. The display screen according to claim 1, characterized in that, The lamp bead includes a light-emitting body, pins and an injection-molded body. The light-emitting body is disposed inside the injection-molded body and is used for emitting light; the injection-molded body has the light-emitting surface; one end of the pin extends into the injection-molded body and is connected to the side surface of the light-emitting body facing away from the light-emitting surface, and the other end of the pin is located outside the injection-molded body facing away from the light-emitting surface and is attached and fixed to the pad. The pin is used to realize the electrical connection between the light-emitting body and the pad.

10. The display screen according to claim 1, characterized in that, The number of the pads is multiple, and the multiple pads are arranged in an array and spaced apart on the board body; The number of the lamp beads is multiple, and each lamp bead is fixedly connected to at least one pad.

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