Display Devices

Abstract

The present invention discloses a display device, which includes: a housing, a plurality of display panels, a light-emitting device and a light-distributing film. The housing is arranged in a polyhedron; the plurality of display panels are arranged on different surfaces of the housing; the light-emitting device is arranged in the housing, including a flexible circuit board and a light-emitting element, the flexible circuit board is bent to form a plurality of light-emitting areas, and the light-emitting elements are arranged in the plurality of light-emitting areas; the light-distributing film is arranged on one side of the flexible circuit board close to the display area, and the light-distributing film is used to refract the light signal emitted by each light-emitting element to the corresponding display area, and process the light signal emitted by the light-emitting element to form an image on the corresponding display panel. By controlling the light-emitting elements in the plurality of light-emitting areas to emit light respectively, different contents are displayed on each display panel.

Description

Technical Field

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

[0002] Display devices have become one of the most important electronic devices in today's society. In public places with high population mobility, multiple display panels are generally required to display different content. However, existing display devices can generally only display on a single display panel, or display the same content on multiple display panels, which has many usage restrictions. Summary of the invention

[0003] The main purpose of the present invention is to provide a display device, aiming to solve the problem that traditional display devices can only display on a single display panel, or display the same content on multiple display panels.

[0004] To achieve the above object, the present invention provides a display device, the display device comprising:

[0005] The housing is arranged in a polyhedron, and display areas are arranged on different faces of the housing;

[0006] A plurality of display panels are arranged in a one-to-one correspondence in the plurality of display areas;

[0007] a light emitting device, disposed in the housing, comprising a flexible circuit board and a plurality of light emitting elements, wherein the flexible circuit board is bent to form a plurality of light emitting areas corresponding to the plurality of display panels, and the plurality of light emitting elements are respectively arranged in the plurality of light emitting areas; and

[0008] The light distribution film is arranged on a side of the flexible circuit board close to the display area, and the light distribution film is used to refract the light signal emitted by each light-emitting element to the corresponding display area.

[0009] Optionally, the light distribution film includes a quantum layer, a light distribution layer and a diffusion coating layer stacked in sequence from the light-emitting device to the shell, the material of the quantum layer includes quantum dots, the light distribution layer is used to uniformly refract the light passing through the quantum layer to the diffusion coating layer, and the diffusion coating layer is used to atomize the light passing through.

[0010] Optionally, the light distribution layer includes a main body portion, and the interior of the main body portion is filled with a diffusing agent;

[0011] A plurality of grooves are arranged at intervals on one side of the main body close to the quantum layer, each of the grooves is gradually narrowed from the quantum layer to the diffusion coating layer, and the light distribution layer further comprises optical glue filled in the plurality of grooves.

[0012] Optionally, the main body portion includes a light incident area disposed between every two adjacent grooves, and each of the light incident areas is disposed relative to one of the light-emitting elements.

[0013] Optionally, the light distribution film further includes a PET layer, and the PET layer is arranged between the diffusion coating layer and the light distribution layer.

[0014] Optionally, the light distribution film further includes an edge sealing adhesive layer, and the edge sealing adhesive layer is covered on the periphery of the quantum layer, the light distribution layer and the diffusion coating layer to bond the three together.

[0015] Optionally, the shell is arranged in a polygonal column, the multiple display areas are respectively arranged on different sides of the shell, the flexible circuit board is curled to form a cylindrical structure, and the side walls of the flexible circuit board are arranged opposite to each side of the shell.

[0016] Optionally, the light distribution film is provided in a cylindrical shape to be sleeved on the outer circumference of the flexible circuit board, and one end of the light distribution film is provided with a flange extending along its radial direction, and the flange is bonded to the shell.

[0017] Optionally, the light distribution film is bonded to the flexible circuit board; or,

[0018] The light distribution film is spaced apart from the flexible circuit board, and the distance between the light distribution film and the flexible circuit board is no greater than 10 mm.

[0019] Optionally, the light emitting element is a MiniLED chip or a MiniLED lamp bead; and / or,

[0020] The flexible circuit board is provided with a reflective layer in each of the light-emitting regions to reflect the light emitted by the plurality of light-emitting elements toward the light distribution film.

[0021] In the technical solution of the present invention, the display device is provided with the display panels on different surfaces of the housing, and the light-emitting device is provided with the flexible circuit board by bending the flexible circuit board, so that the multiple light-emitting elements provided on the flexible circuit board can emit light in different directions, so as to form images on different display panels. In fact, the bending of the flexible circuit board is performed corresponding to the positions of different circuit boards on the housing, so that the flexible circuit board has light-emitting areas corresponding to the multiple display panels, and then the light-emitting elements in the multiple light-emitting areas are controlled to emit light, so that different contents are displayed on each display panel.

[0022] The light distribution film is actually arranged close to the light emitting element, and the light distribution film refracts the light emitted by each light emitting element to the corresponding display panel. In this process, the light emitted by the light emitting element will pass through the multi-layer film structure in the light distribution film, thereby processing the light signal emitted by the light emitting element to ensure normal imaging of the display panel.

[0023] During specific use, the display device can set the shape of the shell according to the number of display panels required, and then adjust the shape of the flexible circuit board according to the shape of the shell and the position of each display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0025] Figure 1 A schematic structural diagram of an embodiment of a display device provided by the present invention;

[0026] Figure 2 for Figure 1 A schematic diagram of the structure of the light emitting device (planar);

[0027] Figure 3 for Figure 2 A schematic structural diagram of another state (cylindrical) of the light-emitting device;

[0028] Figure 4 for Figure 1 A cross-sectional schematic diagram of the light emitting device;

[0029] Figure 5 for Figure 1 Schematic diagram of the structure of the middle light distribution film (flat shape);

[0030] Figure 6 for Figure 5 A schematic diagram of the structure of another state (cylindrical) of the middle light distribution film;

[0031] Figure 7 for Figure 1 A schematic cross-sectional view of the light distribution film;

[0032] Figure 8 for Figure 1 A cross-sectional schematic diagram of some structures in the device is shown in FIG.

[0033] Description of Figure Numbers:

[0034]

[0035]

[0036] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0039] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0040] Display devices have become one of the most important electronic devices in today's society. In public places with high population mobility, multiple display panels are generally required to display different content. However, existing display devices can generally only display on a single display panel, or display the same content on multiple display panels, which has many usage restrictions.

[0041] In view of this, the main purpose of the present invention is to provide a display device, aiming to solve the problem that traditional display devices can only display on a single display panel, or display the same content on multiple display panels. Figures 1 to 8 This is an embodiment of a display device provided by the present invention.

[0042] See also Figure 1 , Figure 2 , Figure 3 and Figure 6 As shown, the display device proposed by the present invention includes: a housing 1, a plurality of display panels 2, a light-emitting device 3 and a light-distributing film 4. The housing 1 is a polyhedron, and the housing 1 is provided with display areas on different faces; the plurality of display panels 2 are provided in a one-to-one correspondence in the plurality of display areas; the light-emitting device 3 is provided in the housing 1, and includes a flexible circuit board 31 and a plurality of light-emitting elements 32, the flexible circuit board 31 is bent to form a plurality of light-emitting areas corresponding to the plurality of display panels 2, and the plurality of light-emitting elements 32 are respectively arranged in the plurality of light-emitting areas; the light-distributing film 4 is provided on a side of the flexible circuit board 31 close to the display area, and the light-distributing film 4 is used to refract the light signal emitted by each light-emitting element 32 to the corresponding display area.

[0043] In the technical solution of the present invention, the display device is provided with the display panels 2 on different surfaces of the housing 1, and the light emitting device 3 is provided with the flexible circuit board 31 by bending the flexible circuit board 31, so that the multiple light emitting elements 32 provided on the flexible circuit board 31 can emit light in different directions, so as to form images on different display panels 2. In fact, the bending of the flexible circuit board 31 is performed corresponding to the positions of different circuit boards on the housing 1, so that the flexible circuit board 31 has light emitting areas corresponding to the multiple display panels 2, and then the light emitting elements 32 in the multiple light emitting areas are controlled to emit light, so that different contents are displayed on each display panel 2.

[0044] The light distribution film 4 is actually arranged close to the light emitting element 32. The light distribution film 4 refracts the light emitted by each light emitting element 32 to the corresponding display panel 2. In this process, the light emitted by the light emitting element 32 will pass through the multi-layer film structure in the light distribution film 4, thereby processing the optical signal emitted by the light emitting element 32 to ensure normal imaging of the display panel 2.

[0045] During specific use, the display device can set the shape of the housing 1 according to the number of display panels 2 required, and then adjust the shape of the flexible circuit board 31 according to the shape of the housing 1 and the position of each display panel 2 .

[0046] For further information, see Figures 5 to 7The light distribution film 4 includes a quantum layer 41, a light distribution layer 42 and a diffusion coating layer 44 stacked in sequence from the light emitting device 3 to the shell 1. The material of the quantum layer 41 includes quantum dots. The light distribution layer 42 is used to evenly refract the light passing through the quantum layer 41 to the diffusion coating layer 44. The diffusion coating layer 44 is used to atomize the light passing through.

[0047] In this embodiment, quantum dots are encapsulated in the quantum layer 41, and the quantum dots can be excited when the light-emitting element 32 emits blue light, convert part of the blue light into red light and green light, and mix with the remaining part of the blue light to form white light and emit it in one go, thereby assisting the light-emitting element 32 to display imaging together. The quantum dots are more suitable when the light-emitting element 32 is an LED element, and the actual LED technology is also the mainstream technology of current display devices. In addition, although the number of the light-emitting elements 32 is not small, it is still difficult to make the light uniform when multiple light-emitting elements 32 cooperate to emit light. Therefore, the light distribution layer 42 is also provided in the light distribution film 4, and the light distribution layer 42 processes the light so that the light can be uniformly emitted toward the diffusion coating layer 44, and the light entering the diffusion coating layer 44 will not have too much regional difference. After receiving the light emitted from the light distribution layer 42, the diffusion coating layer 44 can further scatter and optimize the light, thereby further atomizing the light and ensuring the normal imaging of the display panel 2.

[0048] For further information, see Figure 7 The light distribution layer 42 includes a main body 421, and the interior of the main body 421 is filled with a diffusing agent 425; a plurality of grooves 422 are arranged at intervals on one side of the main body 421 close to the quantum layer 41, and each of the grooves 422 is gradually narrowed from the quantum layer 41 to the diffusion coating layer 44, and the light distribution layer 42 also includes an optical glue 424 filled in the plurality of grooves 422.

[0049] The light distribution layer 42 needs to integrate the light so that the light distribution in the light emitting area is less different. If the light entering the light distribution layer 42 is simply scattered, the integration effect may be less controllable. Therefore, in this embodiment, the light distribution layer 42 scatters and diffuses the light through the diffuser 425 in the main part 421, so that most of the light will enter the groove 422, and the light will be refracted by the optical glue 424 after entering the groove 422. It should be noted that the cross section of the groove 422 is gradually narrowed from the quantum layer 41 to the diffusion coating layer 44, so that the optical glue 424 will also be gradually narrowed in the direction close to the diffusion coating layer 44, so that the light entering the optical glue 424 is refracted toward the diffusion coating layer 44. By setting the size and shape of the groove 422, the refraction angle of the light in the optical glue 424 can be adjusted, so that the light is more evenly distributed when it is emitted. Generally speaking, the optical adhesive 424 can gather the light within an angle range of 70 degrees in the emission direction when emitting, so that the light in the light distribution film 4 no longer has regional differences, thereby ensuring the imaging of the display panel 2.

[0050] For further information, see Figures 7 and 8 , the light emitted by the light-emitting element 32 generally has a very small deflection angle, which makes the light more concentrated, and the light distribution layer 42 needs to scatter and diffuse the light first during processing, so that the light is emitted toward the side, and then a certain degree of focusing is performed in the groove 422, so that the light is more uniform. However, the light from the light-emitting element 32 may directly enter the optical glue 424 in the groove 422, which will make the deflection angle of the light smaller when leaving the optical glue 424, so that the light is still relatively concentrated, affecting the imaging effect. Therefore, in one embodiment of the present invention, the main body 421 includes a light entrance area 423 arranged between every two adjacent grooves 422, and each of the light entrance areas 423 is arranged relative to one of the light-emitting elements 32.

[0051] In this embodiment, the area between every two of the grooves 422 is set as the light entrance area 423. When the light enters the light entrance area 423, the light will be scattered and diffused normally. Therefore, the multiple light entrance areas 423 are set in one-to-one correspondence with the multiple light-emitting elements 32. By setting each of the light entrance areas 423 relative to the corresponding light-emitting element 32, and the deflection angle of the light emitted by the light-emitting element 32 is small, and the distance between the light distribution layer 42 and the light-emitting element 32 is very short, the light emitted by the light-emitting element 32 will not be deflected too much when it is emitted to the vicinity of the corresponding light entrance area 423, so that most of the light can enter the light entrance area 423 normally, thereby ensuring the normal operation of the light distribution layer 42.

[0052] Furthermore, the light distribution layer 42 refracts light at different angles, and it takes a certain amount of time for the light distribution layer 42 to allow the light to enter the diffusion coating layer 44 more evenly, that is, the light needs to have a certain propagation distance, otherwise the light entering the diffusion coating layer 44 is still relatively concentrated. Therefore, in one embodiment of the present invention, the light distribution film 4 also includes a PET layer 43, and the PET layer 43 is arranged between the diffusion coating layer 44 and the light distribution layer 42. By arranging the PET layer 43, a certain gap is provided between the light distribution layer 42 and the diffusion coating layer 44, and the light emitted from the light distribution layer 42 can first propagate through the PET layer 43 and then enter the diffusion coating layer 44, so that the light has a certain propagation distance, ensuring that the light is basically uniform when entering the diffusion coating layer 44.

[0053] It should be noted that when the light distribution layer 42 has a stronger light-evening ability, the PET layer 43 can be set thinner or not set, and when the light distribution layer 42 has a weaker light-evening ability, the PET layer 43 needs to be set thicker. The specific adjustment can be made according to the usage requirements and is not limited in the present invention.

[0054] Furthermore, the light distribution film 4 further includes an edge sealing adhesive layer 45 , and the edge sealing adhesive layer 45 is covered on the periphery of the quantum layer 41 , the light distribution layer 42 and the diffusion coating layer 44 to bond the three together.

[0055] In this embodiment, the edge-sealing adhesive layer 45 can bond the multi-layer film structure in the light distribution film 4. Specifically, the edge-sealing adhesive layer 45 is covered on the side walls of the quantum layer 41, the light distribution layer 42 and the diffusion coating layer 44, and then bonds these film layers together through its own adhesive force, thereby forming the light distribution film 4. It should be noted that when the light propagates in the light distribution film 4, the light may be emitted from the side wall of the light distribution film 4 in advance, resulting in light loss. Therefore, the edge-sealing adhesive layer 45 can use a material with reflective ability to reflect the light emitted to the side wall of the light distribution film 4 back to the diffusion coating layer 44, thereby reducing the loss of light.

[0056] For further information, see Figures 1 to 3 In specific applications, public places with large flow of people, such as bus stations, often require multiple display panels 2 to output image information to users, and multiple display panels 2 with different orientations can output image information to users in different directions, which has a better effect. Therefore, in this embodiment, the housing 1 is arranged in a multi-prism, and the multiple display areas are respectively arranged on different sides of the housing 1. The flexible circuit board 31 is curled to form a cylindrical structure, and the side walls of the flexible circuit board 31 are arranged opposite to the side surfaces of the housing 1.

[0057] In this embodiment, the housing 1 is configured in a prism shape, so that the multiple display panels 2 on the side wall of the housing 1 have different orientations, thereby outputting image information for users in different orientations. The light emitting device 3 does not need to be configured in multiples, but the flexible circuit board 31 can be rolled up, so that the flexible circuit board 31 has an area corresponding to each display panel 2, that is, the light emitting area, so that each display panel 2 can form an image normally.

[0058] For further information, see Figures 5 and 6 The light distribution film 4 is provided in a cylindrical shape to be sleeved on the outer periphery of the flexible circuit board 31 , and one end of the light distribution film 4 is provided with a flange 46 extending along its radial direction, and the flange 46 is bonded to the housing 1 .

[0059] In this embodiment, the flexible circuit board 31 is bent into a cylindrical shape, and the light distribution film 4 is correspondingly arranged in a cylindrical shape, so that the light emitted by each of the light-emitting elements 32 can stably pass through the light distribution film 4. Different from the prior art, a flange 46 is arranged at one end of the light distribution film 4, and the flange 46 can be fitted with a side wall of the housing 1, and then the light distribution film 4 can be installed in the housing 1 by bonding. The flange 46 can be set when the light distribution film 4 is manufactured, and can also be provided later by setting a saddle seam line on the light distribution film 4, so that the light distribution film 4 has a flange 46, and the specific method is not limited.

[0060] Furthermore, in one embodiment of the present invention, the light distribution film 4 is attached to the flexible circuit board 31 ; this reduces the gap between the light distribution film 4 and the flexible circuit board 31 , thereby making the display device more compact and occupying less space.

[0061] The light emitted by the light emitting element 32 has a certain deflection angle, so the light will be more dispersed after propagating a certain distance, which makes it easier for the light distribution film 4 to process the light. Figure 8 As shown, the light distribution film 4 is spaced apart from the flexible circuit board 31, and the distance between the light distribution film 4 and the flexible circuit board 31 is not greater than 10 mm. The light distribution film 4 is spaced apart from the flexible circuit board 31, which can make it more convenient for the light distribution film 4 to process light, but it will make the volume of the display device larger, which does not meet the current use requirements of the display device. Therefore, the distance between the light distribution film 4 and the flexible circuit board 31 is not greater than 10 mm, so as to minimize the impact on the volume of the display device.

[0062] When the light distribution film 4 is attached to the flexible circuit board 31, there is no gap between the light distribution film 4 and the flexible circuit board 31, which makes the display device more compact and occupies less space. However, this installation method requires more and denser light-emitting elements 32, which increases the production cost. When the light distribution film 4 is spaced apart from the flexible circuit board 31, fewer light-emitting elements 32 are required, but the volume of the display device will be larger. In other words, the light distribution film 4 can be attached to the flexible circuit board 31 or spaced apart from the flexible circuit board 31 according to the use requirements, and the two implementations have their own advantages and disadvantages.

[0063] Furthermore, in one embodiment of the present invention, the light emitting element 32 is a MiniLED chip or a MiniLED lamp bead. MiniLED is an LED device with a chip size between 50 and 200 μm. MiniLED technology can make bright fields brighter and dark fields darker, making the color display more accurate, and is more suitable for large display devices.

[0064] The light emitted by the light emitting element 32 generally has a certain deflection angle relative to the light distribution film 4, and this will cause the light emitted by the light emitting element 32 to not enter the light distribution film 4 when the deflection angle is too large, but to be emitted to the outside. Therefore, in another embodiment of the present invention, Figure 4 and Figure 8As shown, the flexible circuit board 31 is provided with a reflective layer 311 in each light-emitting area to reflect the light emitted by the plurality of light-emitting elements 32 toward the light distribution film 4. The laying of the reflective layer 311 can reflect the light in time, ensure that the light can enter the light distribution film 4, and reduce the loss of light.

[0065] Of course, the light emitting element 32 being configured as a MiniLED chip or a MiniLED lamp bead does not conflict with the reflective layer 311 and can be configured in the same embodiment, thereby making the display effect of the display device even better.

[0066] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A display device, characterized in that: include The housing is arranged in a polyhedron, and display areas are arranged on different faces of the housing; A plurality of display panels are arranged in a one-to-one correspondence in the plurality of display areas; a light emitting device, disposed in the housing, comprising a flexible circuit board and a plurality of light emitting elements, wherein the flexible circuit board is bent to form a plurality of light emitting areas corresponding to the plurality of display panels, and the plurality of light emitting elements are respectively arranged in the plurality of light emitting areas; as well as, A light distribution film is provided on a side of the flexible circuit board close to the display area, and the light distribution film is used to refract the light signal emitted by each light-emitting element to the corresponding display area; The light distribution film includes a quantum layer, a light distribution layer and a diffusion coating layer stacked in sequence from the light emitting device to the shell, the material of the quantum layer includes quantum dots, the light distribution layer is used to evenly refract the light passing through the quantum layer to the diffusion coating layer, and the diffusion coating layer is used to atomize the light passing through; The light distribution layer comprises a main body portion, and the interior of the main body portion is filled with a diffusing agent; A plurality of grooves are arranged at intervals on one side of the main body close to the quantum layer, each of the grooves is gradually narrowed from the quantum layer to the diffusion coating layer, and the light distribution layer further comprises optical glue filled in the plurality of grooves.

2. The display device according to claim 1, characterized in that The main body portion includes a light incident area disposed between every two adjacent grooves, and each of the light incident areas is disposed opposite to one of the light emitting elements.

3. The display device according to claim 1, characterized in that The light distribution film further includes a PET layer, and the PET layer is arranged between the diffusion coating layer and the light distribution layer.

4. The display device according to claim 1, characterized in that The light distribution film further comprises an edge sealing adhesive layer, and the edge sealing adhesive layer is covered on the periphery of the quantum layer, the light distribution layer and the diffusion coating layer to bond the three together.

5. The display device according to claim 1, characterized in that The shell is arranged in a polygonal column, the multiple display areas are arranged on different sides of the shell respectively, the flexible circuit board is arranged in a curled state to form a cylindrical structure, and the side walls of the flexible circuit board are arranged opposite to the sides of the shell.

6. The display device according to claim 5, characterized in that The light distribution film is provided in a cylindrical shape to be sleeved on the outer periphery of the flexible circuit board. One end of the light distribution film is provided with a flange extending along its radial direction, and the flange is bonded to the shell.

7. The display device according to claim 1, characterized in that The light distribution film is bonded to the flexible circuit board; or, The light distribution film is spaced apart from the flexible circuit board, and the distance between the light distribution film and the flexible circuit board is no greater than 10 mm.

8. The display device according to claim 1, characterized in that The light emitting element is a MiniLED chip or a MiniLED lamp bead; and / or, The flexible circuit board is provided with a reflective layer in each of the light-emitting regions to reflect the light emitted by the plurality of light-emitting elements toward the light distribution film.

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