Display device

Abstract

The utility model relates to a display device which comprises a box body, a plurality of lamp panels and a covering film, the plurality of lamp panels are installed on the box body, each lamp panel comprises a circuit board, a plurality of LED chips and a lamp shell, the plurality of LED chips are arranged on the circuit board, the plurality of lamp panels are arranged in a spliced mode, so that the light-emitting surfaces of the plurality of lamp panels jointly form a display surface of the display device, and the covering film covers the display surface of the display device. Splicing gaps are formed between the edges of the lamp shells of the adjacent lamp panels, the multiple lamp panels are covered with the covering film, the splicing gaps are shielded by the covering film, and light emitted by the lamp panels can be transmitted through the covering film. According to the display device, the multiple spliced lamp panels are covered with the covering film, due to the fact that the covering film can shield the splicing gaps, and the light rays emitted by the lamp panels can penetrate through the covering film, under the condition that light emitting display of the lamp panels is not affected, visual splicing gaps are reduced through shielding of the covering film on the splicing gaps. In this way, the display surface of the display device is integrated through the covering film covering the lamp panels, and the overall appearance attractiveness of the display device is improved.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display device. Background Art

[0002] With the development of display technology, users have increasingly higher requirements on the size of the display surface of display devices.

[0003] In the display devices of related art, multiple light panels are usually spliced ​​together on the box body to present a large display surface. With the advancement of technology, the splicing gaps between adjacent light panels can be made very small, and even the edges of the spliced ​​light panels can be tightly pressed together. However, there are still splicing marks on the display surface of the display device, forming a visual seam. Figure 1 As shown, although the lamp panels 20 are tightly spliced ​​on the box body 10, the edge contour of each lamp panel 20 is still clearly visible, so the splicing gaps 20a between the lamp panels will still form visual seams, thereby affecting the overall appearance of the display device. Utility Model Content

[0004] Based on this, the present application provides a display device to solve the technical problem that the display surface of the display device has visual seams that affect the overall appearance.

[0005] The present application provides a display device, comprising:

[0006] Box;

[0007] A plurality of light boards are mounted on the housing, the light boards comprising a circuit board, a plurality of LED chips, and a lamp housing. The plurality of LED chips are disposed on the circuit board, which is disposed within a space enclosed by the lamp housing. Light emitted by the LED chips can pass through the lamp housing, enabling the light boards to emit light and display. The plurality of light boards are spliced ​​together so that the light-emitting surfaces of the plurality of light boards together constitute the display surface of the display device, and a splicing gap is formed between the edges of the lamp housings of adjacent light boards.

[0008] A covering film is provided on the plurality of light panels and covers the joint gaps, and the covering film can transmit the light emitted by the light panels.

[0009] In one embodiment, the transmittance of the coating ranges from 40% to 45%.

[0010] In one embodiment, the coating includes an anti-glare protective film containing light-absorbing particles.

[0011] In one embodiment, the light-absorbing particles are carbon black particles.

[0012] In one embodiment, the volume percentage of the carbon black particles in the anti-glare protective film is 91 vol% to 92 vol%.

[0013] In one embodiment, the volume percentage of the carbon black particles in the anti-glare protective film is 91.6 vol%.

[0014] In one embodiment, the thickness of the coating is 45 μm to 55 μm.

[0015] In one embodiment, the thickness of the coating is 50 μm.

[0016] In one embodiment, a base film is attached to one side of the circuit board on which the LED chip is arranged, and the base film covers a plurality of the LED chips. In the light boards spliced ​​together, the surface of the base film on the side facing away from the circuit board is flush; the transmittance of the base film is greater than the transmittance of the covering film, and the covering film is arranged on the side of the base film facing away from the circuit board.

[0017] In one embodiment, the base film is formed by curing an adhesive material spin-coated on the circuit board to form a groove at a position corresponding to the LED chip, and the LED chip is embedded in the groove.

[0018] In the aforementioned display device, the multiple light panels are covered with a film. Because the film conceals the joint gaps, and light emitted by the light panels can pass through the film, the film shields the joint gaps and reduces the visual gaps without affecting the light output of the light panels. The film covering the multiple light panels makes the display surface of the display device appear as a single entity, enhancing the overall aesthetics of the display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the following briefly introduces the drawings required for use in the embodiments or related technical descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, without paying any creative work, they can also obtain drawings of other embodiments based on these drawings.

[0020] Figure 1 Schematic diagram of the three-dimensional structure of a display device in the related art.

[0021] Figure 2 FIG. 1 is a schematic diagram of the three-dimensional structure of a display device according to an embodiment of the present application.

[0022] Figure 3 This is a schematic cross-sectional view of a display device according to one embodiment of the present application, in which a coating is applied to a light panel and covers a splicing gap.

[0023] Figure 4 Schematic diagram of the light path of external light when it passes through the cover film and enters the splicing gap in the display device according to one embodiment of the present application.

[0024] Figure 5 This is a schematic diagram of an assembly tool splicing multiple light panels during the assembly process of a display device according to one embodiment of the present application.

[0025] Figure 6 This is a schematic diagram of connecting a bracket to a plurality of light panels during the assembly process of a display device according to one embodiment of the present application.

[0026] Figure 7 This is a schematic diagram of removing a bracket together with a plurality of light panels from an assembly tool during the assembly process of a display device according to one embodiment of the present application.

[0027] Figure 8 This is a schematic diagram of attaching a covering film to the display surfaces of multiple light panels during the assembly process of the display device according to one embodiment of the present application.

[0028] Description of reference numerals:

[0029] 10. Box body; 20. Light board; 20a. Joint gap; 20b. Lamp housing; 21. Circuit board; 22. LED chip; 23. Base film; 23a. Groove; 30. Lamination; 100. Assembly tooling; 110. Positioning beam; 200. Bracket. DETAILED DESCRIPTION

[0030] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0031] In the description of this application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0032] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0033] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0034] In this application, unless otherwise expressly specified or limited, if a first feature is described as being "above" or "below" a second feature, or similar descriptions, this may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is described as being "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is described as being "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0035] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only embodiment.

[0036] Combine Figure 2 and Figure 3 As shown, the display device provided in one embodiment of the present application can be used to play videos in a theater, or to display images in scenarios such as traffic monitoring, power dispatching, or subway dispatching. The application scenarios of the display device are not limited here.

[0037] The display device includes a housing 10 and a plurality of light panels 20 mounted on the housing 10, wherein the plurality of light panels 20 are spliced ​​together. The housing 10 serves as a mounting carrier for the light panels 20, and the housing 10 can be made of a metal material such as aluminum alloy or stainless steel. It should be noted that after the plurality of light panels 20 are spliced ​​together, the display surfaces of the plurality of light panels 20 are pieced together to form the display surface of the display device. In this way, the display device can present a larger display screen area than a single light panel 20, thereby providing a large-format display visual effect.

[0038] It should be noted that the light panel 20 in this application is an independent display unit, that is, the light panel 20 can independently emit light and display when not spliced ​​with other light panels 20, and multiple light panels 20 can be independently assembled to the box 10 and independently removed from the box 10, so that the light panel 20 can be independently replaced when damaged. Of course, multiple light panels 20 can be assembled to the box 10 together using assembly tools.

[0039] The lamp board 20 includes a lamp housing 20b. A plurality of lamp boards 20 are spliced ​​together so that the light-emitting surfaces of the plurality of lamp boards 20 together constitute the display surface of the display device. The lamp board 20 includes a circuit board 21 and a plurality of LED chips 22. The plurality of LED chips 22 are arranged on the circuit board 21. The circuit board 21 is arranged in the space enclosed by the lamp housing. The light emitted by the LED chips 22 can pass through the lamp housing, so that the lamp board 20 can emit light and display; for the sake of convenience of description, the gap between the lamp housings 20b of adjacent lamp boards 20 will be referred to as a "splicing gap 20a" below. Understandably, due to the limitations of processing accuracy, the edges of the lamp housings 20b of the lamp board 20 will have a certain surface roughness. In this way, when the lamp boards 20 and the lamp boards 20 are spliced ​​together, a splicing gap 20a will appear between the edges of their lamp housings 20b. It should be noted here that the splicing gap 20a refers to the "visual gap" formed by visually seeing the outline of the lamp housing 20b, and is not limited to the physical gap between the edge of the lamp housing 20b of the lamp board 20 and the edge of the lamp housing 20b of another lamp board 20. In summary, in the present application, the adjacent lamp boards 20 are seamlessly spliced ​​(that is, the physical gap between the adjacent lamp boards 20 is close to 0), so that the lamp housings 20b are tightly abutted together. At this time, when the outline of the lamp housing 20b is visible to the naked eye, there will still be a visual splicing gap 20a between the spliced ​​lamp boards 20. Of course, in some embodiments, there is a gap between the spliced ​​lamp boards 20 themselves, that is, there is a gap between the edges of the lamp housings 20b of the spliced ​​lamp boards 20, and in this case, a splicing gap 20a will also be visually generated. The size of the gap between the spliced ​​lamp boards 20 is not limited here.

[0040] Continue to combine Figure 2 and Figure 3As shown, the display device in the embodiment of the present application also includes a coating 30 covering the multiple light panels 20. The coating 30 shields the splicing gaps 20a, and the coating 30 can transmit the light emitted by the light panels 20. In this embodiment, since the coating 30 can shield the splicing gaps 20a, when the display device is not displaying light (i.e., in the off-screen state), the light from the outside world that passes through the coating 30 and is reflected at the splicing gaps 20a of the light panels 20 will be weakened when passing through the coating 30. In this way, the intensity of the reflected light entering the user's eyes is weakened, and the user's eyes are not easily able to observe the splicing gaps 20a, thereby achieving the effect of reducing visual splicing. In this way, the coating 30 covering the multiple light panels 20 makes the display surface of the display device appear as a whole, thereby improving the overall aesthetic appearance of the display device. Since the light emitted by the light panels 20 can pass through the coating 30, the display device can display images normally. It should be noted here that since the lamp board 20 can emit light by itself, the light intensity emitted by the lamp board 20 when the display device displays the image is much stronger than the external light. Therefore, even if the coating 30 is not completely transparent (that is, the transmittance is less than 100%) due to the need to shield the splicing gap 20a, the light emitted by the lamp board 20 itself can also pass through the coating 30 for normal display.

[0041] In the display device of the present application, the number of light boards 20 is not limited. For example, eight light boards 20 are arranged in a 2×4 array. In other embodiments, the light boards 20 may be arranged in a 3×4 array, a 4×4 array, a 4×5 array, or a 5×6 array.

[0042] In some embodiments, the coating 30 includes an anti-glare protective film (AG film) containing light-absorbing particles. In this embodiment, the anti-glare protective film reduces glare on the display surface of the display device, which can affect the visual quality of the displayed image. Furthermore, when the display panel 20 is not emitting light, the light-absorbing particles absorb light to reduce the amount of external light that is incident on the location of the splicing gap 20a and reflected back to the user's eyes. This makes the splicing gap 20a less visible to the user, thereby reducing the visual gap.

[0043] Furthermore, the light-absorbing particles are carbon black particles. In this way, the properties of carbon black particles in absorbing and scattering light are utilized so that external light is not easily reflected to the user's eyes at the location of the splicing gap 20a, thereby facilitating the elimination of visual seams. It should be noted here that when the particle size of the carbon black particles is less than a certain degree, they can be considered as carbon black powder. In the embodiment of the present application, the carbon black particles include granular carbon black and powdered carbon black. The particle size of the carbon black particles is not limited here.

[0044] In some embodiments, the volume percentage of carbon black particles in the anti-glare protective film is 91 vol% to 92 vol%. For example, the volume percentage of carbon black particles in the anti-glare protective film is 91 vol%, 91.1 vol%, 91.2 vol%, 91.3 vol%, 91.4 vol%, 91.5 vol%, 91.6 vol%, 91.7 vol%, 91.8 vol%, 91.9 vol%, or 92 vol%. Since carbon black particles have the effect of absorbing and scattering light, the higher the volume percentage of carbon black particles in the anti-glare protective film, the lower the transmittance of the coating 30; accordingly, the lower the volume percentage of carbon black particles in the anti-glare protective film, the higher the transmittance of the coating 30. After research, the inventors found that when the volume percentage of carbon black particles in the anti-glare protective film is less than 91 vol%, the transmittance of the coating 30 is high, and light can easily penetrate the coating 30. At this time, the coating 30 can only reduce visual seams. When the volume percentage of carbon black particles in the anti-glare protective film reaches 91 vol%, the user's eyes cannot see the splicing gap 20a at all. In addition, the inventors have found through research that when the volume percentage of carbon black particles in the anti-glare protective film exceeds 92 vol%, the light emitted by the light panel 20 is largely absorbed by the coating 30, resulting in a dim display brightness. Therefore, in this embodiment, the volume percentage of carbon black particles in the anti-glare protective film is set to 91 vol% to 92 vol%. This not only allows the coating 30 to shield the splicing gap 20a, thereby eliminating the visual splicing gap, but also ensures that the coating 30 has sufficient transmittance to ensure the normal light display of the light panel 20.

[0045] Preferably, the volume percentage of the carbon black particles in the anti-glare protective film is 91.6 vol%. In this embodiment, when the volume percentage of the carbon black particles in the anti-glare protective film is 91.6 vol%, the coating 30 has a significant shielding effect on the splicing gap 20a. When the light emitted by the light panel 20 passes through the coating 30 for display, the display brightness is neither too dark nor too bright, thereby providing a good display effect.

[0046] Combine Figure 3As shown, in some embodiments, the thickness d of the coating 30 is 45μm~55μm. For example, the thickness d of the coating 30 is 45μm, 46μm, 47μm, 48μm, 49μm, 50μm, 51μm, 52μm, 53μm, 54μm or 55μm. In this embodiment, the thickness of the coating 30 is related to the length of the propagation path of the light when passing through the coating 30. After research, the inventor found that when the thickness d of the coating 30 is set to 45μm~55μm, the coating 30 can not only well shield the splicing gap 20a, but also ensure that the light board 20 can display normally. When the thickness d of the coating 30 is less than 45μm, the thinner the thickness of the coating 30, the worse the shielding effect of the splicing gap 20a; when the thickness d of the coating 30 is greater than 55μm, the thicker the thickness of the coating 30, the darker the display brightness when the light board 20 displays light, resulting in poor display effect. Therefore, in this embodiment, the thickness d of the coating 30 is set to 45 μm to 55 μm, which can reduce visual seams while taking into account the luminous display effect of the light panel 20.

[0047] Preferably, the thickness d of the coating 30 is 50 μm. In this embodiment, when the thickness d of the coating 30 is 50 μm, the coating 30 has a significant shielding effect on the splicing gap 20a, and the light emitted by the light board 20 passes through the coating 30 for display, and the display brightness is neither too dark nor too bright, thereby providing a good display effect.

[0048] Continue to combine Figure 3 As shown, in an embodiment in which the lamp board 20 includes a circuit board 21 and a plurality of LED chips 22, a base film 23 is attached to one side of the circuit board 21 where the LED chips 22 are provided. The base film 23 covers the plurality of LED chips 22, and in the lamp boards 20 that are spliced ​​together, the surface of the side of the base film 23 that faces away from the circuit board 21 is flush. In this embodiment, since the base film 23 covers the plurality of LED chips 22, it can provide good dustproof and waterproof effects, thereby helping to extend the service life of the LED chips 22. The covering film 30 is covered on the side of the base film 23 that faces away from the circuit board 21. Compared to the case where the covering film 30 directly covers the LED chips 22, which is prone to local arching and unevenness, the covering film 30 is covered on the side of the base film 23 that faces away from the circuit board 21. The base film 23 can be used to cover the LED chips 22 to provide a flat attachment surface for the covering film 30, so as to ensure the flatness of the covering film 30, thereby helping to improve the aesthetic appearance of the display surface of the display device. It should be noted that the transmittance of the base film 23 is greater than the transmittance of the covering film 30 , so that the light emitted by the lamp board 20 can easily penetrate the base film 23 . In other words, the loss of light from the lamp board 20 when passing through the base film 23 is reduced.

[0049] The LED chip 22 can be a Mini LED chip or a Micro LED chip. The type of LED chip 22 is not limited here. Mini LED chips and Micro LED chips have the characteristics of high efficiency, long life, environmental protection, and low energy consumption. Their brightness is high enough to penetrate the cover film 30 for a clear display.

[0050] The base film 23 may be made of materials including, but not limited to, PET (Polyethylene terephthalate), PVC (Polyvinyl chloride), and PP (Polypropylene). In some embodiments, the base film 23 is formed by curing an adhesive that is spin-coated onto the circuit board 21. A recess 23a is formed at the location corresponding to the LED chip 22. The LED chip 22 is embedded in the recess 23a, enhancing its stability on the circuit board 21. The base film 23 also provides a good seal for the LED chip 22.

[0051] The light absorption performance of the light absorbing particles can be characterized by the molar absorption coefficient. In some embodiments, the molar absorption coefficient of the light absorbing particles ranges from 1.7×10 4 m -1 ~2.3×10 4 m -1 For example, when the light-absorbing particles are carbon black particles, the molar absorption coefficient of the carbon black particles can be 1.7×10 4 m -1 , 2.0×10 4 m -1 or 2.3 × 10 4 m -1 .

[0052] For ease of understanding, the following is an example of a sample with a molar absorption coefficient of 2.0×10 4 m -1 The working principle of the coating 30 of the display device will be described by taking the coating 30 having carbon black particles and a thickness d of 50 μm as an example.

[0053] Combine Figure 4 As shown, when light enters the coating 30 with carbon black powder, the light will be partially absorbed and scattered by the carbon black powder. Considering only absorption, according to the Beer-Lambert law:

[0054]

[0055] Where I is the outgoing light intensity; I0 is the incident light intensity; α is the carbon black absorption coefficient; ε is the carbon black molar absorption coefficient; c is the carbon black concentration; L is the light propagation distance; θ is the angle between the incident light and the normal.

[0056] Taking a Mini LED display as an example, the luminous performance of the display device of this application was verified. It was found that when the luminous brightness of the LED chip 22 was 1500 nit, the display brightness of the display device during light display was approximately 600 nit due to the shielding of the coating 30. This display brightness is not too dark for the display device, resulting in poor display effect. Since the degree of attenuation of the light emitted by the LED chip 22 when passing through the coating 30 is consistent with the transmittance of the coating 30, that is, the transmittance of the coating 30 at this time is approximately (600 / 1500) × 100%, that is, the transmittance of the coating 30 is approximately 40%. Based on this, if the display brightness of the display device during light display is required to be no less than 600 nit to ensure that the display brightness is not too dark, it is more appropriate to set the transmittance of the coating 30 to be greater than or equal to 40%.

[0057] Understandably, in the display device of the present application, the cover film 30 is required to shield the joint gap 20a to eliminate the adverse effect of the visual joint on the overall aesthetic appearance of the display device. The transmittance of the cover film 30 should not be too high. If the transmittance of the cover film 30 is too high, the shielding effect of the joint gap 20a will be ineffective. In addition, if the transmittance of the cover film 30 is too high, the display brightness of the display device may be too high and glare.

[0058] It should be noted that when the Mini LED display is turned off, it is only illuminated by ambient light, so the seam is visible at this time. The reflected light also comes from the ambient light, which is about 400lx. When the light reflected at the seam is less than 80lx, the human eye cannot easily detect this position. When light enters the film 30 and reaches the seam, it is reflected to the human eye. The light passes through the film 30 twice. Based on the total transmittance of 80 / 400=20%, the single pass rate is less than (approximately 45%). Based on this, in some embodiments of the application, the transmittance of the coating 30 ranges from 40% to 45%. This configuration allows the display device to meet the brightness requirements for light output while making the seam less noticeable, thereby reducing visual seams.

[0059] Furthermore, according to the transmittance required by the coating 30 when the display device is lit and the light intensity requirement for the reflected light when the display device is not lit, it can be seen that the lower the transmittance of the coating 30, the better its shielding effect on the splicing gap 20a. Therefore, in order to better reduce the visual seams and ensure that the light emitted by the light board 20 is not too dark when displayed through the coating 30, the best transmittance of the coating 30 is 40%.

[0060] It should be noted that, because the coating 30 is applied to multiple light boards 20 in the present application, in embodiments where the coating 30 comprises an anti-glare protective film containing light-absorbing particles, it is not necessary to provide a separate anti-glare protective film on each light board 20. Therefore, in the display device of the present application, applying the coating 30 to multiple light boards 20 is more efficient than providing a separate anti-glare protective film on each light board 20.

[0061] The following will be combined Figures 5 to 8 As shown, the assembly of the display device is explained.

[0062] First, if Figure 5 As shown, a group of light boards 20 (including multiple light boards 20) are placed with the display surface facing down into the assembly tool 100, and the positioning beams 110 on the two sides of the assembly tool 100 are pushed to the sides of the light boards 20 and squeezed to reduce the gaps between the light boards 20.

[0063] Then, combine Figure 6 As shown, a bracket 200 is provided for positioning the light board 20. Double-sided tape is applied to the area where the bracket 200 meets the light board 20, and the release paper of the double-sided tape is removed. The bracket 200 is then bonded to the side of the light board 20 facing away from the display surface using the double-sided tape. During the bonding process, the bracket 200 can be pressed to enhance the stability of the connection between the bracket 200 and the light board 20.

[0064] Combine Figure 7 As shown, after the bracket 200 is used to position the plurality of light panels 20, the bracket 200 together with the plurality of light panels 20 is removed from the assembly tool 100. Figure 8 As shown, a sheet of film 30 is attached to the display surfaces of multiple light panels 20, such that the film 30 covers the joint gaps 20a between the light panels 20. It is understood that a film 30 having an area larger than the joint area of ​​the multiple light panels 20 can be used to cover the multiple light panels 20. In this way, after the film 30 covers the multiple light panels 20, a portion of the film 30 will extend from the outer edge of the assembled light panel 20. In this case, the excess film 30 can be trimmed away using a knife or cutter to align the edges of the film 30 with the outer edge of the assembled light panel 20. The resulting display device then has the film 30 neatly covering the multiple light panels 20.

[0065] It should be noted that during the process of attaching the covering film 30 to the multiple light boards 20, the bracket 200 can be folded so that the display surfaces of the multiple light boards 20 on the bracket 200 face upward, thereby facilitating the attachment of the covering film 30. Furthermore, when trimming the excess portion of the covering film 30, the bracket 200 can be flipped again so that the display surfaces of the multiple light boards 20 face downward, with the covering film 30 positioned below the multiple light boards 20, so that the excess portion of the covering film 30 can be trimmed along the outer edge of the light board 20 assembly formed by splicing the multiple light boards 20.

[0066] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0067] The above embodiments merely illustrate several implementation methods of the present application, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the inventive concept of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A display device, characterized in that: include: Box; A plurality of light boards are mounted on the housing, the light boards comprising a circuit board, a plurality of LED chips, and a lamp housing. The plurality of LED chips are disposed on the circuit board, which is disposed within a space enclosed by the lamp housing. Light emitted by the LED chips can pass through the lamp housing, enabling the light boards to emit light and display. The plurality of light boards are spliced ​​together so that the light-emitting surfaces of the plurality of light boards together constitute the display surface of the display device, and a splicing gap is formed between the edges of the lamp housings of adjacent light boards. A covering film is provided on the plurality of light panels and covers the joint gaps, and the covering film can transmit the light emitted by the light panels.

2. The display device according to claim 1, wherein The transmittance of the coating ranges from 40% to 45%.

3. The display device according to claim 1 or 2, characterized in that The coating includes an anti-glare protective film containing light-absorbing particles.

4. The display device according to claim 3, wherein: The light-absorbing particles are carbon black particles.

5. The display device according to claim 1, wherein The thickness of the coating is 45 μm to 55 μm.

6. The display device according to claim 5, wherein: The thickness of the coating is 50 μm.

7. The display device according to claim 1, wherein A base film is attached to one side of the circuit board where the LED chip is arranged. The base film covers a plurality of the LED chips, and in the light boards spliced ​​together, the surface of the base film on the side facing away from the circuit board is flush.

8. The display device according to claim 7, wherein: The transmittance of the base film is greater than the transmittance of the cover film.

9. The display device according to claim 7, wherein: The covering film is arranged on a side of the base film facing away from the circuit board.

10. The display device according to claim 7, wherein: The base film is formed by curing a glue material spin-coated on the circuit board to form a groove at a position corresponding to the LED chip, and the LED chip is embedded in the groove.

Images