Backboard and display device

Abstract

The utility model discloses a backboard and a display device, and belongs to the technical field of display devices. The back plate comprises a back plate main body, a first plate part, a second plate part and a third plate part; a mounting step is defined between the first plate part and the second plate part, and the mounting step is used for accommodating a frame; a first accommodating groove is defined among the backboard main body, the second plate part and the third plate part, and the first accommodating groove is used for accommodating an optical assembly; the first accommodating groove and the mounting step are respectively formed on two sides of the second plate part; a first supporting face is formed on the side, away from the first containing groove, of the third plate part and used for supporting the screen cover plate. The display device comprises the backboard. The backboard has the functions of supporting the screen assembly, protecting the backlight module and providing the frame to support the locking position. When the back plate is applied to the display equipment, two material types of a screen bracket and a module middle frame can be canceled, and the display equipment applying the back plate is reduced in material cost, reduced in assembly steps and reduced in assembly cost.

Description

Technical Field

[0001] The utility model relates to the technical field of display equipment, and in particular to a back panel and a display equipment. Background Art

[0002] The display device usually includes a screen assembly, a backlight module, a frame, a back plate, a screen bracket, a module middle frame, etc. The backlight module includes an optical film, etc. The screen bracket supports the back of the glass or liquid crystal panel in the screen assembly to support the screen assembly. A part of the module middle frame is spaced between the screen assembly and the optical film. The module middle frame plays a role in preventing foreign objects from entering the space where the backlight module is located.

[0003] However, the module middle frame and the screen bracket need to be manufactured separately, the manufacturing cost of the module middle frame is high, and the module middle frame and the screen bracket also need to spend a certain amount of time to assemble with the frame, back plate, etc. Therefore, the display device in the related art has the problems of more materials, higher cost of parts and components, and troublesome assembly. Utility Model Content

[0004] The purpose of the embodiments of the utility model is to provide a back panel and a display device, wherein the back panel has multiple functions, and the display device can eliminate the screen group bracket and the module middle frame, thereby reducing the types of materials and facilitating assembly.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A back plate, comprising a back plate body, a first plate portion, a second plate portion and a third plate portion connected to each other;

[0007] A mounting step is defined between the first plate portion and the second plate portion, and the mounting step is used to accommodate the frame; a first accommodating groove is defined between the back plate body, the second plate portion, and the third plate portion, and the first accommodating groove is used to accommodate the optical component; the first accommodating groove and the mounting step are respectively formed on both sides of the second plate portion; a first supporting surface is formed on the side of the third plate portion away from the first accommodating groove, and the first supporting surface is used to support the screen cover. The back plate has the functions of supporting the screen cover, protecting the backlight module, and providing a locking position for the frame support.

[0008] Optionally, the back panel body, the first panel portion, the second panel portion and the third panel portion are connected in sequence; the back panel is an integrally formed metal bending plate. By bending the back panel at multiple locations to form the first panel portion, the second panel portion and the third panel portion, the back panel is integrally formed, thereby reducing subsequent assembly steps.

[0009] Optionally, the first board portion includes a first layer board and a second layer board, the first layer board is connected to the backboard body, and the second layer board is stacked with the first layer board; the installation step is formed between the second layer board and the second board portion. The double-layer first board portion is convenient for forming the installation step with the second board portion, and improves the support and locking reliability of the first board portion to the frame.

[0010] Optionally, the first board portion includes a first layer board and a second layer board that are connected to each other; the first layer board extends outward from the back panel body, the second layer board is bent inward and extended from the first layer board, the second board portion is bent forward and extended from the second layer board, and the third board portion is bent inward and extended from the second board portion.

[0011] A display device, comprising:

[0012] A back panel as described in the above scheme;

[0013] A screen cover plate, arranged on a side of the third plate portion away from the first receiving groove; the third plate portion supports the screen cover plate;

[0014] A frame, comprising a first frame portion; the first frame portion is arranged on the installation step and surrounds the outer periphery of the screen cover;

[0015] The optical film is arranged between the screen cover and the back plate; the edge of the optical film extends into the first receiving groove, and the back plate body supports the optical film. The display device can eliminate the screen middle frame and the screen bracket, reducing the types of materials.

[0016] Optionally, a first buffer is further included; the first buffer is sandwiched between the screen cover and the third plate portion. The first buffer plays a role in protecting the screen cover.

[0017] Optionally, a fastener is further included; the first frame portion is fixed to the first plate portion by the fastener. The fastener can lock and fix the frame to the first plate portion of the back plate.

[0018] Optionally, the frame includes a second frame portion connected to the first frame portion, and the second frame portion extends inwardly from the first frame portion;

[0019] A second receiving groove is defined between the third plate portion, the first frame portion, and the second frame portion, and the edge of the screen cover extends into the second receiving groove, and the screen cover is clamped between the second frame portion and the third plate portion. The second frame portion of the frame and the third plate portion of the back plate limit the front and rear positions of the screen cover, so that the screen cover is not easy to shake.

[0020] Optionally, a touch sensing module and a filter strip are included; a receiving groove is provided inside the frame, the touch sensing module is provided in the receiving groove, a frame opening communicating with the receiving groove is provided inside the second frame portion, and the filter strip is provided in the frame opening. The display device is a touch device.

[0021] Optionally, the frame includes a frame protrusion protruding relative to the first frame portion, an embedding step is defined between the frame protrusion and the first frame portion, the first plate portion is inserted into the embedding step, and the frame protrusion surrounds the outer side of the first plate portion. The first frame portion and the frame protrusion are shielded at the periphery of the back plate, and the display device has a strong sense of integrity.

[0022] The beneficial effects of the utility model are as follows: the back plate has the functions of supporting the screen cover, protecting the backlight module, and providing a frame support locking position. When the back plate is applied to a display device, the two types of materials, the screen bracket and the module middle frame, can be eliminated, the material cost of the display device using the back plate is reduced, the assembly steps are reduced, and the assembly cost is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The utility model is further described in detail below based on the drawings and embodiments.

[0024] Figure 1 It is a schematic diagram of the partial structure of the back plate described in the embodiment of the utility model;

[0025] Figure 2 This is a schematic diagram of the structure of the back plate according to an embodiment of the utility model;

[0026] Figure 3 This is a schematic diagram of assembling a back plate and a frame in a display device according to an embodiment of the utility model;

[0027] Figure 4 It is a partial structural schematic diagram of a display device according to one embodiment of the utility model;

[0028] Figure 5 It is a partial structural schematic diagram of a display device according to another embodiment of the utility model;

[0029] Figure 6 A schematic diagram of the structure of a frame of a display device according to an embodiment of the utility model;

[0030] Figure 7 It is a schematic diagram of the partial structure of a display device according to another embodiment of the present utility model.

[0031] In the figure: 10, back panel; 101, installation step; 102, first accommodating groove; 103, second accommodating groove; 104, installation space; 11, back panel body; 111, first main body board; 112, second main body board; 12, first board; 121, first layer board; 122, second layer board; 1201, second supporting surface; 13, second board; 14, third board; 1401, first supporting surface; 20, frame; 21, first frame; 22, second frame; 221, frame opening; 23, frame protrusion; 30, optical component; 31, diffuser; 32, optical film; 40, screen component; 41, screen cover; 42, liquid crystal panel; 43, frame glue; 51, first buffer; 52, second buffer; 60, touch sensing module; 70, filter strip; 80, fastener. DETAILED DESCRIPTION

[0032] In order to make the technical problems solved by the utility model, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the utility model will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0033] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected" and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0035] Display devices usually include screen components, backlight modules, frames, back panels, screen brackets, module middle frames, etc. However, the display devices in the related art have many types of materials, high manufacturing costs for components, many assembly steps between components, and long assembly time.

[0036] Taking the infrared touch control display device as an example, the display device also includes a filter strip and a touch sensing module. The touch sensing module includes a sensing circuit board and a transceiver element for transmitting and receiving infrared rays disposed on the sensing circuit board. The screen assembly includes a screen cover and a liquid crystal panel, and the liquid crystal panel is fixed to the back of the screen cover. The backlight module includes a light board, a reflector, a diffuser, an optical film, etc. The backlight module is disposed between the screen assembly and the back panel, and the frame surrounds the outside of the screen assembly.

[0037] The screen bracket is arranged between the screen cover and the back plate, the screen bracket supports the back of the screen cover, and the screen bracket is fixed to the frame and / or the back plate. The module middle frame is arranged between the screen cover and the optical film, and the module middle frame is fixed to the frame and / or the back plate. On the one hand, the module middle frame blocks the front side of the edge of the optical film to prevent the optical film from jumping off during transportation, and also provides a support plane for the liquid crystal panel. The module middle frame also prevents foreign objects such as screw chips locked at the frame from entering the space where the backlight module is located, avoiding abnormal display images. However, this display device has the following problems:

[0038] First, the cost of the module middle frame is relatively high. The module middle frame is usually a plastic frame or an aluminum frame. The plastic frame needs to be molded by injection molding, which is expensive, while the aluminum frame needs to be processed by aluminum extrusion and CNC technology. Whether it is a plastic frame or an aluminum frame as the module middle frame, the cost is relatively high.

[0039] Second, the screen bracket needs to be processed separately, which is costly.

[0040] Third, the entire display device has many types of materials, which not only increases the cost, but also requires a certain amount of labor cost to assemble and lock the module middle frame and screen bracket.

[0041] Based on this, refer to Figures 1 to 7 The present application provides a back plate 10 and a display device. The back plate 10 has the functions of supporting a screen assembly 40, protecting a backlight module, and supporting a frame 20. When the back plate 10 is applied to a display device, two types of materials, a screen bracket and a module middle frame, can be eliminated. The material cost of the display device using the back plate 10 is reduced, the assembly steps are reduced, and the assembly cost is reduced.

[0042] In the present application, for the back panel 10, the display device, and the components in the display device, the direction close to the center of the screen assembly 40 is the inner side of each component, and the direction away from the center of the screen assembly 40 is the outer side of each component. When the display device is in use, the screen assembly 40 faces the user, and the back panel 10 is located on the side of the screen assembly 40 away from the user. The F1 direction shown in the drawings is the inward direction, the F2 direction is the outward direction, the F3 direction is the forward direction, and the F4 direction is the backward direction.

[0043] Please refer to Figures 1 to 7 , the back plate 10 and the display device including the back plate 10 are described below. This application takes the infrared touch all-in-one machine with a module middle frame and a screen bracket as an example to describe the display device.

[0044] The display device includes a back plate 10, a backlight module, a screen assembly 40 and a frame 20. The screen assembly 40 includes a screen cover 41 and a liquid crystal panel 42. The backlight module includes a lamp board, a reflector, an optical assembly 30, etc. The optical assembly 30 includes an optical film 32 and a diffuser 31, etc. The back plate 10 includes a back plate body 11, a first plate portion 12, a second plate portion 13 and a third plate portion 14 connected to each other.

[0045] An installation step 101 is defined between the first plate portion 12 and the second plate portion 13, and the installation step 101 is used to accommodate the frame 20. A first receiving groove 102 is defined between the back plate body 11, the second plate portion 13, and the third plate portion 14, and the first receiving groove 102 is used to accommodate the optical component 30. The first receiving groove 102 and the installation step 101 are respectively formed on both sides of the second plate portion 13. Figure 1 In the illustrated embodiment, the first receiving groove 102 and the mounting step 101 are formed on the inner and outer sides of the second plate portion 13 respectively.

[0046] The back panel body 11 is used to provide a backlight module installation position and an installation space 104. Figure 1 , Figure 2 The back panel body 11 includes a first main body plate portion 111 and a second main body plate portion 112. The first main body plate portion 111 is in a shape that is concave backwards, so as to define an installation space 104 on the first main body plate portion 111. The light board, the reflector, etc. of the backlight module can be arranged in the installation space 104. The second main body plate portion 112 is matched with the first main body plate portion 111 at an angle. The second main body plate portion 112 extends outward from the edge of the first main body plate portion 111. The front side surface of the second main body plate portion 112 is used to support the sheet of the optical component 30, such as supporting the diffuser 31, the optical film 32, etc.

[0047] Please refer to Figure 1 , Figure 2In the back plate 10, a mounting step 101 is defined between the front side of the first plate portion 12 and the outer side of the second plate portion 13, and the mounting step 101 is located outside the second plate portion 13. The mounting step 101 is used to accommodate the frame 20, the first plate portion 12 is used to support the frame 20, and the second plate portion 13 has a limiting effect on the frame 20. Figure 3 , Figure 4 In the display device, the frame 20 includes a first frame portion 21, which is disposed on the mounting step 101 and surrounds the outer periphery of the second plate portion 13 and the screen cover 41. The present application provides the back plate 10 with the function of supporting the frame 20 and providing a mounting and locking position for the frame 20 by disposing the first plate portion 12 in the back plate 10 and cooperating the first plate portion 12 with the second plate portion 13.

[0048] Reference Figure 1 , Figure 2 In the back panel 10, a first receiving groove 102 is defined between the front side of the second main body plate portion 112 of the back panel body 11, the inner side of the second plate portion 13, and the rear side of the third plate portion 14. The first receiving groove 102 is located inside the second plate portion 13. The first receiving groove 102 is used to receive the optical component 30, specifically, it can be used to receive the edge area of ​​the optical film 32 and the diffuser 31. Figure 3 , Figure 4 In the display device, the optical component 30 includes an optical film 32 and a diffuser 31. The edge areas of the optical film 32 and the diffuser 31 extend into the first receiving groove 102. The second main body plate portion 112 of the back plate body 11 supports the diffuser 31 and the optical film 32. In the present application, the back plate 10 has a protective function of preventing the optical components 30 such as the optical film 32 from jumping off during transportation through the cooperation of the second plate portion 13 and the third plate portion 14 in the back plate 10. The back plate 10 also has a function of preventing foreign objects such as screw chips locked at the frame 20 from entering the space where the backlight module is located, that is, the back plate 10 has the function of a module middle frame, and the display device can eliminate the module middle frame material.

[0049] Please refer to Figure 1 , Figure 2 In the back plate 10, the front side of the third plate portion 14 forms a first supporting surface 1401, that is, the side of the third plate portion 14 away from the first receiving groove 102 forms the first supporting surface 1401, and the first supporting surface 1401 is used to support the screen cover 41. Figure 3 , Figure 4In the display device, the screen assembly 40 includes a screen cover 41, which may be, but is not limited to, a glass cover, which may be tempered glass. The screen cover 41 is disposed on the front side of the third plate portion 14, that is, the screen cover 41 is disposed on the side of the third plate portion 14 away from the first receiving groove 102, and the third plate portion 14 supports the screen cover 41, and the screen cover 41 may be relatively fixed to the third plate portion 14 by means of pasting or the like. In the present application, by providing the third plate portion 14, the back plate 10 has the function of supporting the screen cover 41, that is, the back plate 10 has the function of a screen bracket, and the display device can eliminate the screen bracket.

[0050] It can be understood that the back panel body 11, the first panel portion 12, the second panel portion 13, and the third panel portion 14 can be arranged and configured in a variety of ways, and these layout methods can be realized: based on a back panel, the first panel portion 12 and the second panel portion 13 can be coordinated to provide an installation position for the display device frame 20 and support the frame 20, and the third panel portion 14 can also support the screen assembly 40 of the display device. In this way, a bracket or a rubber frame specifically used to support the frame 20 can be saved, and a bracket or a rubber frame specifically used to support the screen assembly 40 can be saved, thereby reducing the number of parts.

[0051] Exemplarily, in some embodiments, the first plate portion 12 is directly or indirectly connected to the back plate body 11 , the second plate portion 13 is directly or indirectly connected to the first plate portion 12 , and the third plate portion 14 is directly or indirectly connected to the second plate portion 13 . Figures 1 to 5 In the embodiment, the first plate portion 12 is connected to the back plate body 11 , the first plate portion 12 is connected to the second plate portion 13 at an angle, and the second plate portion 13 is connected to the third plate portion 14 at an angle.

[0052] In other embodiments, the first plate portion 12, the second plate portion 13, and the third plate portion 14 are respectively connected to the back panel body 11. For example, the first plate portion 12 extends outward from the back panel body 11, the second plate portion 13 extends forward from the back panel body 11, and the third plate portion 14 extends forward from the back panel body 11 and then extends inward. Along the length direction of the back panel, the first plate portion 12, the second plate portion 13, and the third plate portion 14 are arranged alternately. In one embodiment, the first plate portion 12, the second plate portion 13, and the third plate portion 14 are arranged on the upper, lower, left, and right sides of the back panel body 11. In other words, the first plate portions 12 on the four sides, the second plate portions 13 on the four sides, and the third plate portions 14 on the four sides surround the back panel body 11.

[0053] The present application has a mounting step 101 for mounting the frame 20, a first accommodating groove 102 for accommodating the protective optical component 30, and a third plate portion 14 for supporting the screen cover 41 on the back plate 10. The back plate 10 not only has the functions of a screen support and a module middle frame, but also has the function of supporting and locking the frame 20. The display device using the back plate 10 can eliminate the screen support and the module middle frame, reduce the types of materials, and reduce the material cost; since the module middle frame and the screen support parts are reduced, the assembly efficiency can be improved and the assembly cost can be reduced.

[0054] In one embodiment, the back plate 10 is a metal plate, specifically an integrally formed sheet metal bending plate. By bending the back plate 10 in multiple places, the first plate portion 12 has a first bend to provide a plane for locking and supporting the frame 20, the second bend is located between the first plate portion 12 and the second plate portion 13, and the third bend is located between the second plate portion 13 and the third plate portion 14. Through the second bend and the third bend, on the one hand, a plane for supporting the screen cover 41 is provided, and on the other hand, screw chips or other foreign matter locked by the frame 20 are prevented from entering the backlight module area, and the front side of the optical film 32 is blocked to prevent the optical film 32 from jumping off during transportation, so as to prevent the optical film 32 from detaching from the back plate 10, thereby avoiding abnormal display of the picture. In this embodiment, by bending the back plate 10, the functions of the module middle frame and the screen bracket in the display device are realized at the same time. Compared with the module middle frame formed by injection molding or CNC molding after aluminum extrusion, the first plate portion 12, the second plate portion 13 and the third plate portion 14 formed by the bending process in this embodiment cooperate to realize the functions of the original module middle frame and the screen bracket. Compared with the process of customized mold injection molding or aluminum extrusion and CNC processing, the bending molding process can reduce the processing cost and save the cost of the screen bracket. The material cost of the display device in this embodiment is better reduced and controlled.

[0055] In other embodiments, the first plate portion 12 and the back plate body 11 , the second plate portion 13 and the first plate portion 12 , and the third plate portion 14 and the second plate portion 13 may also be connected by welding or the like.

[0056] In one embodiment, the screen assembly 40 further includes a liquid crystal panel 42, which is disposed on a side of the glass cover plate close to the back plate body 11; the edge area of ​​the glass cover plate extends outward relative to the liquid crystal panel 42, and the edge area of ​​the glass cover plate extends into the second receiving groove 103. The liquid crystal panel 42 is fixed to the glass cover plate by adhesive bonding. Figure 4 , Figure 5 In the embodiment, the edge portion of the front side of the liquid crystal panel 42 is adhered and fixed to the screen cover 41 by means of a frame adhesive 43 .

[0057] Please continue to refer to Figures 1 to 4The first plate portion 12 is a multi-layer structure. In this embodiment, the first plate portion 12 is a double-layer structure. The first plate portion 12 includes a first layer plate 121 and a second layer plate 122. The first layer plate 121 is connected to the back plate body 11, and the second layer plate 122 is stacked on the front side of the first layer plate 121. The mounting step 101 is formed between the second layer plate 122 and the second plate portion 13. The side of the second layer plate 122 facing away from the first layer plate 121 forms a second supporting surface 1201. The second supporting surface 1201 supports the first frame portion 21 of the frame 20. Figure 1 as well as Figure 3 The first plate portion 12 is a multi-layer structure, which can improve the structural strength of the first plate portion 12 on the one hand. After the fixed frame 20 is installed on the first plate portion 12, the first plate portion 12 can more reliably support the frame 20 to avoid deformation of the first plate portion 12 and misalignment of the frame 20. On the other hand, when the bending process is used to form the various plate portions of the back panel 10, bending at the first plate portion 12 can allow the second layer 122 to extend from the outside to the inside, and then bending forward once more to form the second plate portion 13 that matches the angle of the second layer 122, and to form an installation step 101 located on the front side of the first plate portion 12.

[0058] Reference Figure 1 In one embodiment, the first layer plate 121 and the second main body plate portion 112 of the back plate body 11 are located in the same plane, and there is no relative bending between the two. The first layer plate 121 extends outward from the back plate body 11, and the first layer plate 121 and the second layer plate 122 are connected by a first bending portion. The second layer plate 122 extends inward from the first layer plate 121, and the second layer plate 122 is parallel to and abuts against the first layer plate 121. In other words, the first plate portion 12 is bent to form a stacked multi-layer structure. The second plate portion 13 and the second layer plate 122 are connected by a second bending portion, so that the second plate portion 13 and the second layer plate 122 are matched at an angle, thereby defining an installation step 101 on the inner side of the second plate portion 13 and the front side of the second layer plate 122.

[0059] In other embodiments, a bend may also be generated between the first layer plate 121 and the back plate body 11 .

[0060] In other embodiments, the second layer board 122 and the first layer board 121 may also be spaced apart from each other.

[0061] Reference Figure 1 , Figure 3, the first plate portion 12 is provided with a frame locking hole, the frame locking hole passes through the first layer 121 and the second layer 122, the display device includes a fastener 80, the frame locking hole is used for the fastener 80 to pass through, and the fastener 80 is used to achieve the locking connection between the frame 20 and the first plate portion 12. Correspondingly, a mounting hole is provided on the back side of the first frame portion 21 of the frame 20. Exemplarily, the fastener 80 is a fastening screw, which passes through the frame locking hole of the first plate portion 12 from the back and is threadedly connected to the mounting hole of the frame 20 to achieve the locking connection between the frame 20 and the back plate 10 from the back. The frame locking hole can be a threaded hole or a through hole without internal threads. It can be understood that the first plate portion 12 is a multi-layer structure with at least two layers folded, which can increase the depth of the frame locking hole, and the connection between the first plate portion 12 and the fastener 80, and the connection between the first plate portion 12 and the frame 20 is more reliable and stable.

[0062] Please continue to refer to Figures 1 to 4 The back panel 10 is integrally formed by bending, that is, the back panel body 11, the first panel portion 12, the second panel portion 13, and the third panel portion 14 are connected in sequence, and the back panel body 11, the first panel portion 12, the second panel portion 13, and the third panel portion 14 are an integral structure and are formed by processing the same plate material. The first panel portion 12 includes a first layer plate 121 and a second layer plate 122 connected to each other. The first layer plate 121 extends outward from the back panel body 11, the second layer plate 122 is bent inwardly from the first layer plate 121 and extends inwardly, the second panel portion 13 is bent forward from the second layer plate 122 and extends forward, and the third panel portion 14 is bent inwardly from the second panel portion 13 and extends inwardly.

[0063] Reference Figure 1 , Figure 3 , Figure 4 In one embodiment, the second main plate portion 112 of the backplane body 11 and the first layer plate 121 of the first plate portion 12 are located in the same plane, the second layer plate 122 of the first plate portion 12 is parallel to the first layer plate 121, the second plate portion 13 is perpendicular to the second layer plate 122, the third plate portion 14 is perpendicular to the second plate portion 13, and the third plate portion 14 is parallel to the second main plate portion 112 of the backplane body 11. In the display device, the diaphragm is parallel to the second main plate portion 112 of the backplane body 11 and is hung on the second main plate portion 112, and the screen cover 41 and the liquid crystal panel 42 are parallel to the diaphragm. With the backplane 10 of this embodiment, the overall structure of the backplane 10 is beautiful and compact, and it has a good supporting effect on the frame 20 and the screen cover 41, and the overall structural stability is high.

[0064] Reference Figure 4 , Figure 5In order to protect the screen cover 41 and prevent the screen cover 41 from being broken due to accidental shaking of the display device during assembly, transportation, and use, a first buffer 51 is further provided between the third plate portion 14 and the screen cover 41. The first buffer 51 is sandwiched between the screen cover 41 and the third plate portion 14. The first buffer 51 plays a role of shock absorption and buffering, thereby protecting the screen cover 41.

[0065] In one embodiment, the first buffer member 51 is a buffer strip, and the peripheral edge areas of the back of the screen cover 41 are all against the first buffer member 51, so as to achieve buffering of the peripheral area of ​​the screen cover 41. It can be understood that the first buffer member 51 can be a ring structure, or the display device can include four buffer strips, and the four buffer strips are respectively arranged at the peripheral edges. The first buffer member 51 can be a rubber strip or foam, etc.

[0066] In one embodiment, the first buffer member 51 and the screen cover plate 41 as well as the first buffer member 51 and the third plate portion 14 are both fixed by adhesive materials, and the adhesive materials may be glue, double-sided tape, etc. In this way, the first buffer member 51 not only has a shock-absorbing effect, but also realizes the relative fixation between the glass cover plate and the third plate portion 14 of the back plate 10. In other embodiments, the first buffer member 51 may also be only against the screen cover plate 41 and the third plate portion 14 on both sides.

[0067] In other embodiments, the first buffer member 51 may not be configured, and the screen cover 41 may be directly fixed to the third plate portion 14 .

[0068] Reference Figure 5 In order to protect the optical components 30 such as the diaphragm, a second buffer 52 is further provided on the rear side of the third plate portion 14, and the second buffer 52 is glued and fixed to the third plate portion 14. The second buffer 52 and the optical components 30 such as the diaphragm are clearance-matched, so that even if the diaphragm bounces to a certain extent, under the shock-absorbing and buffering effect of the second buffer 52, the diaphragm is not easily damaged when it contacts the second buffer 52. The second buffer 52 can be a rubber strip, a foam strip, etc. Of course, the second buffer 52 can also be omitted, and the third plate portion 14 and the optical components 30 are clearance-matched.

[0069] Reference Figure 3 , Figure 4 The frame 20 includes a first frame portion 21 and a second frame portion 22, and the second frame portion 22 is connected to the first frame portion 21. The second frame portion 22 extends inward from the first frame portion 21, that is, the frame 20 is an L-shaped or approximately L-shaped structure. The second frame portion 22 extends to the front of the third plate portion 14 and is loosely matched with the third plate portion 14. The front side of the third plate portion 14, the inner side of the first frame portion 21, and the rear side of the second frame portion 22 define a second receiving groove 103. The edge area of ​​the screen cover 41 extends into the second receiving groove 103, and the screen cover 41 is sandwiched between the second frame portion 22 and the third plate portion 14. Figure 4 In the figure, the back side of the second frame portion 22 is pressed against the front side of the screen cover 41, the front side of the screen cover 41 is pressed against the first buffer member 51, and the first buffer member 51 is pressed against the third plate portion 14. The front and rear limiting of the screen cover 41 is achieved through the cooperation between the second frame portion 22 of the frame 20 and the third plate portion 14 of the back plate 10. The first frame portion 21 also limits the outward movement of the screen cover 41, and the screen cover 41 is stably and reliably installed.

[0070] Please refer to Figures 3 to 5 The frame 20 also includes a frame protrusion 23. The frame protrusion 23 extends backward from the first frame portion 21, and an embedding step is defined between the first frame portion 21 and the frame protrusion 23. The first plate portion 12 is inserted into the embedding step. The frame protrusion 23 surrounds the outer side of the first plate portion 12 to shield the first plate portion 12. In this way, when looking from the front or oblique front of the display device, only the screen assembly 40 and the frame 20 can be seen, and the back plate 10 cannot be seen. The overall appearance is highly integrated and beautiful. The frame 20 surrounds the outer sides of the first plate portion 12, the second plate portion 13, and the third plate portion 14 to protect the first plate portion 12, the second plate portion 13, and the third plate portion 14 formed after bending in the back plate 10. The frame 20 plays a role in protecting the back plate 10 to prevent the back plate 10 from being deformed by collision.

[0071] Figure 3 , Figure 4 , Figure 5 The display device shown in the figure is a device with a touch sensing function, specifically an infrared touch control display device. The frame 20 is a profile frame 20, and an inner cavity for accommodating the touch sensing module 60 is formed in the frame 20. Figures 3 to 7 The display device includes a touch sensing module and a filter bar 70 . The touch sensing module is disposed inside the frame 20 . A frame opening 221 is disposed inside the second frame portion 22 . The filter bar 70 is disposed in the frame opening 221 .

[0072] Reference Figure 6 , Figure 3 , a receiving groove is provided inside the frame 20, and the receiving groove is formed by the inner wall of the first frame part 21 and the inner wall of the second frame part 22. The touch sensing module 60 is provided in the receiving groove, and the frame opening 221 of the second frame part 22 is connected to the receiving groove. The touch sensing module 60 includes an infrared PCB and a transceiver element provided on the infrared PCB, the transceiver element is used to emit or receive infrared light, and the filter strip 70 is used to filter light other than infrared light. The display device emits infrared sensing light through the touch sensing module 60 in the frame 20 on one side, and the touch sensing module 60 in the frame 20 on the opposite side receives the infrared light, so as to form a sensing light network on the front side of the screen cover 41. When a finger, a stylus or other object is used for writing or touch control operation, the infrared sensing light at that position will be blocked, resulting in a change in the signal received by the touch sensing module 60 on the receiving side, thereby determining the touch position and realizing touch response.

[0073] Among them, the second frame 22, the filter strip 70 and the screen cover 41 can be at least Figure 4 , Figure 7 Configuration method, such as Figure 4 The filter strip 70 is installed in the frame opening 221 of the second frame portion 22, the second frame portion 22 is located at the front side of the screen cover plate 41 to limit the screen cover plate 41, and the first frame portion 21 is located at the outer side of the screen cover plate 41 to limit the screen cover plate 41; Figure 7 , the frame opening 221 of the second frame portion 22 is opened relatively large, after the filter bar 70 is installed to the frame opening 221 of the second frame portion 22, the filter bar 70 is located at the front side of the screen cover plate 41 to limit the screen cover plate 41, a part of the second frame portion 22 is located at the side of the filter bar 70 away from the screen cover plate 41 to provide the installation position of the filter bar 70 and support the filter bar 70, and another part of the second frame portion 22 is located at the outside of the screen cover plate 41 to limit the screen cover plate 41. The second frame portion 22 extends inward relative to the first frame portion 21, not only to meet the installation and working requirements of the touch sensing module 60, but also to cooperate with the third plate portion 14 of the back plate 10 to limit the screen cover plate 41, and the overall structure is compact.

[0074] In other embodiments, the display device may also be a capacitive screen, the frame 20 of the display device may not be provided with the second frame portion 22 shielding the front side of the screen cover 41 , and the touch sensing module 60 may not be provided in the frame 20 .

[0075] In the description of this article, it should be understood that the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0076] In the description of this specification, the description with reference to the terms "an embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0077] In addition, it should be understood that although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0078] The technical principle of the present invention is described above in combination with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the protection scope of the present invention in any way. Based on the explanations here, technicians in this field can think of other specific implementation methods of the present invention without creative work, and these methods will fall within the protection scope of the present invention.

Claims

1. A backplane, characterized in that: It comprises a back plate main body (11), a first plate portion (12), a second plate portion (13) and a third plate portion (14) which are connected to each other; An installation step (101) is defined between the first plate portion (12) and the second plate portion (13), and the installation step (101) is used to accommodate the frame (20); a first accommodating groove (102) is defined between the back plate body (11), the second plate portion (13), and the third plate portion (14), and the first accommodating groove (102) is used to accommodate the optical component (30); the first accommodating groove (102) and the installation step (101) are respectively formed on two sides of the second plate portion (13); a first supporting surface (1401) is formed on the side of the third plate portion (14) facing away from the first accommodating groove (102), and the first supporting surface (1401) is used to support the screen cover (41).

2. The back plate according to claim 1, characterized in that: The back plate body (11), the first plate portion (12), the second plate portion (13) and the third plate portion (14) are connected in sequence, and the back plate (10) is an integrally formed metal bent plate.

3. The back plate according to claim 1 or 2, characterized in that: The first plate portion (12) comprises a first layer plate (121) and a second layer plate (122); the first layer plate (121) is connected to the back plate body (11); the second layer plate (122) is stacked with the first layer plate (121); and the mounting step (101) is formed between the second layer plate (122) and the second plate portion (13).

4. The back plate according to claim 2, characterized in that: The first plate portion (12) comprises a first layer plate (121) and a second layer plate (122) which are connected to each other; the first layer plate (121) extends outward from the back plate body (11), the second layer plate (122) is bent inward and extended from the first layer plate (121), the second plate portion (13) is bent forward and extended from the second layer plate (122), and the third plate portion (14) is bent inward and extended from the second plate portion (13).

5. A display device, characterized in that: include: The back panel (10) according to any one of claims 1 to 4; A screen cover plate (41) is arranged on a side of the third plate portion (14) away from the first receiving groove (102); the third plate portion (14) supports the screen cover plate (41); A frame (20) comprising a first frame portion (21); the first frame portion (21) is arranged on the installation step (101) and surrounds the outer periphery of the screen cover plate (41); An optical film (32) is arranged between the screen cover (41) and the back plate (10); an edge of the optical film (32) extends into the first receiving groove (102), and the back plate body (11) supports the optical film (32).

6. The display device according to claim 5, characterized in that It also includes a first buffer member (51); the first buffer member (51) is sandwiched between the screen cover (41) and the third plate portion (14).

7. The display device according to claim 5, characterized in that It also includes a fastener (80); the first frame portion (21) is fixed to the first plate portion (12) via the fastener (80).

8. The display device according to any one of claims 5 to 7, characterized in that: The frame (20) comprises a second frame portion (22) connected to the first frame portion (21), and the second frame portion (22) extends inward from the first frame portion (21); A second receiving groove (103) is defined between the third plate portion (14), the first frame portion (21) and the second frame portion (22); an edge of the screen cover (41) extends into the second receiving groove (103); and the screen cover (41) is clamped between the second frame portion (22) and the third plate portion (14).

9. The display device according to claim 8, characterized in that It comprises a touch sensing module and a filter strip (70); a receiving groove is arranged inside the frame (20), and the touch sensing module is arranged in the receiving groove; a frame opening (221) communicating with the receiving groove is arranged inside the second frame portion (22), and the filter strip (70) is arranged in the frame opening (221).

10. The display device according to claim 8, characterized in that The frame (20) comprises a frame protrusion (23) protruding relative to the first frame portion (21), an embedding step is defined between the frame protrusion (23) and the first frame portion (21), the first plate portion (12) is inserted into the embedding step, and the frame protrusion (23) surrounds the outer side of the first plate portion (12).

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