High-stability military display module

Abstract

The utility model discloses a military display module with high stability, which comprises a bearing piece, a conductive frame, an elastic conductive layer and a display module, and the display module comprises a backlight assembly, heating glass and a display screen which are sequentially arranged in a rubber frame. By arranging the elastic conductive layer on the conductive frame around the display window, no matter whether the metal frame is flat or not, the tight fitting and electric contact performance of the ITO conductive film on the display screen and the metal frame can be ensured, so that the electromagnetic shielding reliability is ensured, and the shock resistance can be improved through elastic contact; by arranging the rubber frame, the display module can be well protected, a good fixing effect can be achieved, meanwhile, a buffering effect can be achieved, direct contact between the display module and the conductive frame is avoided, the best anti-seismic effect is achieved, and the stability of the display module is improved; the elastic plates are arranged on the side frames of the conductive frame, so that non-rigid contact between the display module and external equipment or a base can be realized, and the shock resistance is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of display, in particular to a military display module, and in particular to a military display module with high stability. Background Art

[0002] As an interactive interface of electronic devices, the display screen is an essential component. Electronic devices, especially display modules, have poor drop and shock resistance and are difficult to adapt to harsh environments, especially military environments, where vibrations and impacts are more frequent. However, due to structural problems, existing military display modules will affect the normal use of the display screen when subjected to vibrations and impacts, and are also prone to damage glass components during assembly. In addition, since there is a backlight component in the display screen, light source leakage is inevitable. In addition, the installation of heated glass on the display screen will cause more serious damage to the light source. Therefore, how to improve the light source utilization rate of the backlight component, reduce energy consumption, and increase brightness is also an urgent problem to be solved.

[0003] The applicant's prior application CN109765710A discloses a display module with anti-vibration function, including a PCB circuit board, a liquid crystal screen, a rubber frame, a backlight assembly and an outer frame, wherein the rubber frame is fixedly mounted on the PCB circuit board, the backlight assembly is fixed inside the rubber frame, the liquid crystal screen is mounted on the backlight assembly, a protrusion is provided on the side of the rubber frame, the liquid crystal screen is fixed on the protrusion of the rubber frame by gluing, the outer frame is mounted on the PCB circuit board by snap-fitting, a display window is provided in the middle of the outer frame for exposing the display area of ​​the liquid crystal screen, pins for installation and connection are provided on the back of the PCB circuit board, a bolt fixing hole is provided on the PCB circuit board at one end of the pin, an elastic plate is provided on the outer frame at the end opposite to the pin, and the elastic plate is provided with bolt fixing holes, and the entire display module can be fixed on the base through two sets of bolt fixing holes. This technology is one of the first-generation series of products of our company. Some problems were gradually found in the production and use of this series of products. For example, as the use time increases or the metal frame is not flat enough, there will be gaps between the transparent conductive film on the surface of the LCD screen and the conductive contact with the metal frame, which will lead to the possibility of magnetic leakage. In some extreme cases, it cannot meet the requirements of high-performance electromagnetic shielding. In addition, during the assembly process, the alignment and positioning of the plastic frame rely on manual observation, which is relatively random, resulting in poor consistency of the assembled products, especially before tightening the L-shaped metal sheet, the plastic frame and the metal frame are active due to the gap, and the twisting and tightening requires the entire module to be turned over. In this process, it is very easy to cause the display screen fixed on the plastic frame to move relative to the metal frame. This misalignment aggravates the inconsistency of the product, and there is a certain probability that the conductive film will be misaligned or wrinkled, so that the electromagnetic shielding performance cannot meet expectations; therefore, some new technologies are urgently needed to solve these problems. On the basis of solving these problems, the applicant has updated all the series of products and formed a series of patent applications. Utility Model Content

[0004] The main purpose of the utility model is to provide a highly stable military display module, aiming to improve the tightness of the connection between components of the military display module in the prior art during assembly and use, thereby improving the overall stability. Another purpose of the utility model is to solve the problem of low positioning accuracy of the display screen and the metal frame during assembly of the military display module in the prior art.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A high-stability military display module, comprising:

[0007] bearing member;

[0008] The conductive frame comprises a bottom frame and side frames located around the bottom frame, the bottom frame is provided with a display window, and an elastic plate is installed on one side frame;

[0009] An elastic conductive layer is disposed on the bottom frame around the display window; and

[0010] The display module comprises a backlight assembly, a heating glass and a display screen which are sequentially installed in a plastic frame, wherein the display screen is attached to the elastic conductive layer and aligned with the display window, and the plastic frame is provided with a plurality of raised portions, and the side surfaces of the display screen are fixed to the raised portions of the plastic frame by gluing and are flush with the height of the raised portions;

[0011] The conductive frame is detachably connected and buckled on the carrier, so that the display module is wrapped in the space between the conductive frame and the carrier to form a display module.

[0012] Furthermore, the carrier is a circuit board, and a pin and a first mounting hole for mounting connection are arranged on the outer side of one end of the circuit board opposite to the elastic plate, and a second mounting hole is arranged on the elastic plate.

[0013] Furthermore, at least one side frame of the conductive frame is provided with a plurality of positioning holes, and the rubber frame is provided with positioning blocks corresponding to the positioning holes.

[0014] Furthermore, the positioning block is a wedge-shaped block protruding laterally, and the thickness of the wedge-shaped block increases in a direction away from the bottom frame, and a clamping surface in contact with the edge of the positioning hole is formed at the end with the maximum thickness.

[0015] Furthermore, each side frame is provided with at least one positioning hole, and the number and positions of the positioning blocks are arranged corresponding to the positioning holes.

[0016] Furthermore, the conductive frame is a metal frame, the side frames are metal thin plates, and gaps are arranged between adjacent side frames, so that the side frames have the elasticity to be able to slightly deform outwards.

[0017] Furthermore, the elastic conductive layer is conductive foam, and the conductive foam is attached to the bottom frame around the display window by adhesive.

[0018] Furthermore, an ITO conductive film is provided on the surface of the display screen.

[0019] Furthermore, the circuit board is provided with a fixing hole, and the side frame is provided with a twist pin for connecting with the fixing hole.

[0020] Furthermore, a fixing block matched with the twist foot is arranged on one side of the fixing hole, and the fixing block is provided with a slight slope.

[0021] The beneficial effects of the utility model are:

[0022] 1. In the utility model, by adding an elastic conductive layer, whether the conductive frame is flat or not, the close fit and electrical contact performance of the ITO conductive layer and the conductive frame can be ensured, thereby ensuring the reliability of electromagnetic shielding; by installing the display module in the rubber frame, the rubber frame can not only provide good protection for the backlight assembly, the heated glass and the display screen, effectively preventing the display module from being damaged during assembly, but also play a good fixing role for the display module, and at the same time can also play a buffering role, avoiding direct contact between the backlight assembly, the heated glass and the display screen and the conductive frame, and can prevent the conductive frame from excessively pressing the glass components such as the display screen and the heated glass, so as to achieve the best anti-vibration effect and improve the stability of the display module; by arranging an elastic plate on the side frame of the conductive frame, non-rigid contact between the conductive frame and the external device or the base can be achieved, further improving the anti-vibration effect.

[0023] 2. The utility model provides positioning structures on the conductive frame and the rubber frame, so that the rubber frame can be positioned with the metal frame with high precision during assembly, ensuring that the display screen and the conductive frame fit closely, and preventing the relative displacement between the two during assembly from affecting the product consistency and electromagnetic shielding performance.

[0024] 3. The utility model sets a rubber frame and sequentially encapsulates a backlight assembly, a heating glass and a display screen in the rubber frame. The rubber frame can firmly fix and protect the above-mentioned components, thereby improving the anti-seismic and anti-impact capabilities of the display module. At the same time, the positioning blocks and positioning holes are used for positioning, so the installation is precise, the yield rate is high, and the protection performance of the display screen is good. The metal frame is installed on the circuit board through twisting feet, and the extrusion force generated during the twisting process of the twisting feet is used to deform the conductive foam, which has a pre-tightening force and good anti-seismic performance. The conductive foam can not only be deformed and fit tightly to improve the electromagnetic shielding performance, but also provide shock absorption performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the overall structure of the high-stability military display module of the utility model;

[0026] Figure 2 This is a schematic diagram of the decomposition of the high-stability military display module of the utility model;

[0027] Figure 3 This is a side view of the high-stability military display module of the utility model;

[0028] Figure 4 for Figure 3 Middle AA section view;

[0029] Figure 5 for Figure 4 A magnified schematic diagram of the middle part;

[0030] Figure 6 This is a schematic diagram of the conductive frame of the utility model;

[0031] Figure 7 This is a schematic diagram of a display screen of the present utility model.

[0032] Reference numerals:

[0033] 100 - bearing member, 110 - fixing hole, 120 - fixing block, 130 - pin, 140 - first mounting hole;

[0034] 200 - conductive frame, 210 - bottom frame, 211 - display window, 220 - side frame, 221 - elastic plate, 222 - second mounting hole, 223 - positioning hole, 224 - wiring hole, 225 - twist foot, 226 - gap;

[0035] 300- elastic conductive layer;

[0036] 400-display module, 410-backlight assembly, 420-heating glass, 430-display screen, 431-ITO conductive film, 432-flex cable, 440-rubber frame, 441-protrusion, 442-positioning block;

[0037] 500- shock absorbing layer. DETAILED DESCRIPTION

[0038] The following is a further detailed description of the implementation of the present utility model in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0039] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do 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 the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0040] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" 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. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] like Figure 1 and Figure 2 As shown, the utility model provides a high-stability military display module, comprising:

[0042] Carrier 100;

[0043] The conductive frame 200 includes a bottom frame 210 and a side frame 220 located around the bottom frame 210. A display window 211 is disposed on the bottom frame 210, and an elastic plate 221 is installed on the side frame 220.

[0044] The elastic conductive layer 300 is disposed on the bottom frame 210 around the display window 211; and

[0045] The display module 400 includes a backlight assembly 410, a heating glass 420 and a display screen 430 which are sequentially mounted in a plastic frame 440. The display screen 430 is attached to the elastic conductive layer 300 and aligned with the display window 211. The plastic frame 440 is provided with a plurality of protrusions 441. The side of the display screen 430 is fixed to the protrusions 441 of the plastic frame 440 by gluing and is flush with the height of the protrusions 441.

[0046] The conductive frame 200 is detachably connected and buckled onto the carrier 100 , so that the display module 400 is wrapped in the space between the conductive frame 200 and the carrier 100 to form a display module.

[0047] The utility model sets an elastic conductive layer 300 between the conductive frame 200 and the display screen 430, and utilizes the deformable characteristics of the elastic conductive layer 300 to ensure close contact between the display screen 430 and the conductive frame 200. On the one hand, it can improve the sealing of the high-stability military display module of the present application to ensure the performance of use, and on the other hand, it can improve the reliability of electromagnetic shielding, avoiding the problem of loose connection between the display screen 430 and the conductive frame 200 due to deformation of the conductive frame 200 and loose assembly, thereby causing a decrease in electromagnetic shielding performance; and, by setting a deformable elastic conductive layer 300, the utility model avoids direct contact between the display screen 430 and the conductive frame 200, thereby improving the anti-seismic performance. In addition, the backlight assembly 410, the heating glass 420 and the display screen 430 in the present application are fixed by gluing and then installed in the glue frame 440. The side of the display screen 430 is fixed to the raised portion 441 of the glue frame 440 by gluing, and the raised portion 441 is flush with the height of the display screen 430. The glue frame 440 can not only provide good protection for the backlight assembly 410, the heating glass 420 and the display screen 430, effectively preventing the display module 400 from being damaged during the assembly process, but also play a good fixing role for the display module 400. It can also play a buffering role, avoiding direct contact between the backlight assembly 410, the heating glass 420 and the display screen 430 and the conductive frame 200, and can prevent the conductive frame 200 from excessively pressing the glass components such as the display screen 430 and the heating glass 420, so as to achieve the best shock-resistant effect and improve the stability of the display module; by arranging the elastic plate 221 on the side frame 220 of the conductive frame 200, the non-rigid contact between the display module and the external device or the base can be achieved, thereby greatly improving the shock resistance of the display module of the present application.

[0048] In some embodiments, the carrier 100 is a circuit board, specifically a PCB circuit board, such as Figure 2 As shown, the outer side of the end of the circuit board opposite to the elastic plate 221 is provided with a pin 130 and a first mounting hole 140 for mounting and connecting, and the elastic plate 221 is provided with a second mounting hole 222. The entire display module can be fixed to an external device through two sets of mounting holes. The cooperation between the elastic plate 221 and the pin 130 makes the utility model have a large margin during assembly and installation, easy alignment, and can effectively prevent damage to the pin 130 during the bolt tightening process.

[0049] In some embodiments, Figure 2 and Figure 6As shown, at least one side frame 220 of the conductive frame 200 is provided with a plurality of positioning holes 223, and the plastic frame 440 is provided with positioning blocks 442 corresponding to the positioning holes 223. By providing the cooperation between the positioning blocks 442 and the positioning holes 223, the display screen 430 and the conductive frame 200 can be accurately positioned during assembly, effectively preventing the display screen 430 and the conductive frame 200 from relative displacement during the assembly process.

[0050] like Figure 2 , Figure 4 and Figure 5 As shown, as a preferred embodiment, the positioning block 442 is a wedge-shaped block protruding laterally, and the thickness of the wedge-shaped block increases in the direction away from the bottom frame 210, and a snap-fit ​​surface is formed at the end with the maximum thickness to contact the edge of the positioning hole 223. By providing the wedge-shaped positioning block 442, no additional tools are required, so that the positioning block 442 can be easily snap-fitted into the positioning hole 223 according to the wedge-shaped guide.

[0051] In some preferred embodiments, each side frame 220 is provided with at least one positioning hole 223, and the number and position of the positioning blocks 442 are arranged corresponding to the positioning holes 223, so that the display screen 430 can be completely positioned on all sides, for example Figure 6 In the embodiment, two positioning holes 223 are provided on each side frame 220 .

[0052] In some embodiments, the positioning block 442 and the plastic frame 440 are integrally formed. The plastic frame 440 is low-cost, can provide good protection, and is easy to form.

[0053] In some embodiments, participating Figure 6 As shown, the conductive frame 200 is a metal frame, the side frame 220 is a metal sheet, and a gap 226 is arranged between adjacent side frames 220, so that the side frame 220 has the elasticity to be slightly deformed outward, so that in the process of assembling the plastic frame 440, when the wedge block squeezes the side frame 220, the side frame 220 can be slightly deformed outward, and when the wedge block reaches the positioning hole 223, the side frame 220 rebounds quickly, which not only meets the assembly requirements, but also minimizes the gap 226 between the plastic basket and the side frame 220 of the conductive frame 200, thereby improving the relative position assembly accuracy between the display screen 430 and the conductive frame 200, and at the same time making the display screen 430 firmly assembled and improving the anti-seismic performance.

[0054] In some embodiments, Figure 2 As shown, the elastic conductive layer 300 is conductive foam, which is attached to the bottom frame 210 around the display window 211 by gluing. The gluing methods include but are not limited to solid glue, liquid glue, double-sided glue or conductive glue with self-adhesive backing. Using conductive foam as the elastic conductive layer 300 not only meets the requirements but also has low cost.

[0055] In some embodiments, Figure 7 As shown, an ITO conductive film 431 is provided on the surface of the display screen 430 , and the metal conductive frame 200 and the ITO conductive film 431 on the surface of the display screen 430 together form an electromagnetic shielding layer to achieve the battery shielding function of the display module of the utility model.

[0056] In some embodiments, Figure 2 As shown, the carrier 100 is a circuit board, specifically a PCB circuit board, and a long strip-shaped fixing hole 110 is provided on the carrier 100, and a twist foot 225 for connecting with the fixing hole 110 is provided on the side frame 220, and a fixing block 120 matching with the twist foot 225 is provided on one side of the fixing hole 110, and the fixing block 120 is provided with a slight slope. By providing the fixing hole 110, the installation and positioning of the conductive frame 200 and the carrier 100 can be quickly realized by passing the twist foot 225 through the fixing hole 110, thereby further improving the assembly accuracy and assembly efficiency. The utility model realizes a snap connection through the twist foot 225 and the micro-slope fixing block 120, which is not only convenient for assembly and disassembly and has appropriate tightness, but also will not cause the equipment to be unreliable due to too loose installation, nor will it damage the display screen 430 due to too tight installation; and by providing the micro-slope fixing block 120, a pre-tightening force can be provided between the connection between the metal frame and the circuit board, and the snap connection of the utility model is not easy to loosen even if it is subjected to severe vibration and impact; when twisting the twist foot 225, only a very small twisting angle is needed to achieve the best cooperation between the twist foot 225 and the fixing block 120, and the twisting is more time-saving and labor-saving. Even if the twist foot 225 is used for a long time, it is not easy to break, which can extend the service life.

[0057] In some embodiments, Figure 2 As shown, a buffer and shock absorbing layer 500 is arranged between the display module 400 and the circuit board. The buffer and shock absorbing layer 500 can be a buffer foam to improve the shock resistance. The buffer foam can be a whole piece attached to the back of the backlight assembly 410, or it can be a plurality of small modules, as long as the back of the display module 400 is in flexible contact with the circuit board and is firmly fixed.

[0058] In some embodiments, the side frame 220 of the conductive frame 200 is provided with a plurality of cable holes 224 for leading out the cables 432 of the display screen 430; Figure 6 Taking the middle rectangular frame as an example, the two long side frames 220 of the rectangular frame are respectively provided with a cable hole 224 for leading out the cable 432 of the display screen 430 .

[0059] The utility model also provides an assembly method of the display module in the optimal embodiment, which is as follows: the conductive foam is attached to the periphery of the display window 211 on the bottom frame 210 by means of conductive adhesive; the backlight assembly 410 is fixed inside the adhesive frame 440, the heating glass 420 is mounted on the backlight assembly 410, the display screen 430 is mounted on the heating glass 420, the backlight assembly 410, the heating glass 420 and the display screen 430 are fixed by adhesive, and the side of the display screen 430 is fixed to the raised portion 441 of the adhesive frame 440 by adhesive; then the adhesive frame 440 is fixed to the raised portion 441 of the adhesive frame 440; The positioning blocks 442 around 40 enter into the positioning holes 223 of the side frame 220 and snap-fit ​​into place, so that the display screen 430 is attached to the elastic conductive layer 300 and aligned with the display window 211, completing the fixation of the display module 400 and the conductive frame 200 to form a display assembly, and then the display assembly is turned upside down on the circuit board, and the twist pin 225 passes through the long hole on the circuit board to the back, and the twist pin 225 is twisted, so that a micro pressure is generated between the end of the twist pin 225 and the micro-slope fixing block 120, completing the assembly of the high-transmittance and high-reliability military display module of the utility model.

[0060] The above implementation modes are only used to illustrate the present invention, but not to limit the present invention. Although the present invention is described in detail with reference to the embodiments, a person skilled in the art should understand that various combinations, modifications or equivalent substitutions of the technical solutions of the present invention do not deviate from the spirit and scope of the technical solutions of the present invention, and should be included in the scope of the claims of the present invention.

Claims

1. A high-stability military display module, characterized in that: include: bearing member; The conductive frame comprises a bottom frame and side frames located around the bottom frame, the bottom frame is provided with a display window, and an elastic plate is installed on one side frame; An elastic conductive layer is arranged on the bottom frame around the display window; as well as The display module comprises a backlight assembly, a heating glass and a display screen which are sequentially installed in a plastic frame, wherein the display screen is attached to the elastic conductive layer and aligned with the display window, and the plastic frame is provided with a plurality of raised portions, and the side surfaces of the display screen are fixed to the raised portions of the plastic frame by gluing and are flush with the height of the raised portions; The conductive frame is detachably connected and buckled on the carrier, so that the display module is wrapped in the space between the conductive frame and the carrier to form a display module.

2. A high-stability military display module according to claim 1, characterized in that: The carrier is a circuit board, and a pin and a first mounting hole for mounting and connection are arranged on the outer side of one end of the circuit board opposite to the elastic plate, and a second mounting hole is arranged on the elastic plate.

3. A high-stability military display module according to claim 1, characterized in that: At least one side frame of the conductive frame is provided with a plurality of positioning holes, and the rubber frame is provided with positioning blocks corresponding to the positioning holes.

4. A high-stability military display module according to claim 3, characterized in that: The positioning block is a wedge-shaped block protruding laterally. The thickness of the wedge-shaped block increases in a direction away from the bottom frame, and a clamping surface in contact with the edge of the positioning hole is formed at the end with the maximum thickness.

5. A high-stability military display module according to claim 4, characterized in that: At least one positioning hole is provided on each side frame, and the number and positions of the positioning blocks are arranged corresponding to the positioning holes.

6. A high-stability military display module according to claim 1, characterized in that: The conductive frame is a metal frame, the side frame is a metal thin plate, and gaps are arranged between adjacent side frames, so that the side frames have elasticity that allows them to be slightly deformed outward.

7. A high-stability military display module according to claim 6, characterized in that: The elastic conductive layer is conductive foam, and the conductive foam is attached to the bottom frame around the display window by adhesive.

8. A high-stability military display module according to claim 7, characterized in that: An ITO conductive film is arranged on the surface of the display screen.

9. A high-stability military display module according to claim 2, characterized in that: The circuit board is provided with a fixing hole, and the side frame is provided with a twist pin for connecting with the fixing hole.

10. A high-stability military display module according to claim 9, characterized in that: A fixing block matched with the twist foot is arranged on one side of the fixing hole, and the fixing block is provided with a slight slope.

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