CN222785014U - A military display module with low temperature resistance and high stability - Google Patents
A military display module with low temperature resistance and high stability Download PDFInfo
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- CN222785014U CN222785014U CN202421485453.3U CN202421485453U CN222785014U CN 222785014 U CN222785014 U CN 222785014U CN 202421485453 U CN202421485453 U CN 202421485453U CN 222785014 U CN222785014 U CN 222785014U
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Abstract
本实用新型公开了一种抗低温高稳定性的军用显示模组，包括承载件、导电框架、弹性导电层以及由背光组件、加热玻璃和显示屏组成的显示模块。通过在显示窗口四周的导电框架上设置弹性导电层，无论金属框架是否平整，都能保证显示屏的表面设置ITO导电镀层与金属框架的紧密贴合和电接触性能，从而保证电磁屏蔽可靠性；通过设置加热玻璃并在显示屏的表面设置ITO导电镀层，加热玻璃和ITO导电镀层在通电后能够对显示屏进行加热，从而提高显示模组的抗低温性能，并且ITO导电镀层可以屏蔽电磁干扰，可以进一步提高抗电磁干扰性能；通过在金属框架和保护框上设置定位结构，可以提高装配精度和装配效率。
The utility model discloses a low-temperature resistant and high-stability military display module, comprising a carrier, a conductive frame, an elastic conductive layer, and a display module composed of a backlight assembly, a heating glass, and a display screen. By arranging an elastic conductive layer on the conductive frame around the display window, whether the metal frame is flat or not, the ITO conductive coating on the surface of the display screen can be closely fitted and electrically contacted with the metal frame, thereby ensuring electromagnetic shielding reliability; by arranging the heating glass and arranging the ITO conductive coating on the surface of the display screen, the heating glass and the ITO conductive coating can heat the display screen after power is turned on, thereby improving the low-temperature resistance of the display module, and the ITO conductive coating can shield electromagnetic interference, which can further improve the anti-electromagnetic interference performance; by arranging a positioning structure on the metal frame and the protective frame, the assembly accuracy and assembly efficiency can be improved.
Description
Technical Field
The utility model relates to the technical field of display, in particular to a military display module with low temperature resistance and high stability.
Background
The display screen is used as an essential component of electronic equipment, the anti-falling and shockproof performances of electronic devices, particularly display modules, are relatively poor, and the display screen is difficult to adapt to occasions with severe use environments, particularly military environments, vibration and impact are more frequent, the conventional military display modules can influence the normal use of the display screen when being subjected to vibration and impact due to the problem of structural arrangement, and glass devices are also easy to damage during assembly. In addition, although the liquid crystal screen has the advantages of low cost, mature technology and the like, the liquid crystal screen has the fatal defect that the using temperature range is small, and once the liquid crystal is frozen in a low-temperature environment, the liquid crystal screen cannot be used, so that how to improve the temperature range of the liquid crystal screen is also a content worthy of research.
Applicant's prior application CN109765709A discloses a for military use low temperature resistant display module assembly, including PCB circuit board, LCD screen, backlight unit and outer frame, be equipped with ITO conductive coating on the LCD screen, LCD screen and backlight unit pass through the buffer layer after fixed together through the gluing in proper order and install on the PCB circuit board, outer frame is the recess type frame that can hold the LCD screen, and outer frame passes through the buckle lock and installs on the PCB circuit board, and outer frame middle part is equipped with the display window that supplies LCD screen display area to expose, PCB circuit board back is equipped with the stitch that is used for installing the connection, be equipped with the bolt fixed orifices on the PCB circuit board of stitch one end, be equipped with the elastic plate on the outer frame of the opposite one end of stitch, be equipped with the bolt fixed orifices on the elastic plate, can fix whole for military use display module assembly on the base through two sets of bolt fixed orifices. The technology is one of the primary series products of the company, and the series products gradually find that problems exist in the production and use processes, such as gaps exist when the transparent conductive film on the surface of the liquid crystal screen is in conductive contact with the metal frame along with the prolonged use time or under the condition that the flatness of the metal frame is insufficient, so that the possibility of magnetic flux leakage occurs, and the requirements of high-performance electromagnetic shielding cannot be met under certain extreme conditions. In addition, in the assembling process, the liquid crystal screen is a glass device, gaps are reserved on the peripheral side walls of the liquid crystal screen and the metal frame, the gaps are too small to cause difficult assembling, the gaps are too large to cause larger randomness of the relative positions of the liquid crystal screen and the metal frame during manual assembling, namely, the assembled products are poor in consistency, particularly, before twisting the metal frame, the liquid crystal screen and the metal frame are twisted, the whole module is required to be turned over due to movable gaps, the relative dislocation movement of the liquid crystal screen and the metal frame is extremely easy to occur in the process, the dislocation movement aggravates the product inconsistency, and the dislocation or the fold of the ITO conductive coating is caused with a certain probability, so that the electromagnetic shielding performance and the heating performance cannot reach expectations, new technologies are urgently needed to solve the problems, and the applicant completely updates the series of products on the basis of solving the problems, and forms a series of patent applications.
Disclosure of utility model
The utility model mainly aims to provide a low-temperature-resistant high-stability military display module, and aims to improve connection tightness between devices in the assembly and use processes of the military display module in the prior art, so that the overall stability is improved. The utility model further aims to solve the problem that the positioning accuracy of the display screen and the metal frame is not high in the assembly process of the military display module in the prior art.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a low temperature resistant high stability military display module comprising:
A carrier;
The conductive frame is at least provided with a display window;
An elastic conductive layer arranged on the bottom frame around the display window, and
The display module comprises a backlight assembly, heating glass and a display screen which are sequentially installed, wherein the display screen is attached to the elastic conductive layer and aligned to the display window, and an ITO conductive coating is arranged on the surface of the display screen aligned to the display window;
The conductive frame is detachably connected and reversely buckled on the bearing piece, so that the display module is wrapped in a space between the conductive frame and the bearing piece to form the display module.
Further, a temperature sensor or a thermistor is arranged on the surface of the display screen, and the heating power of the ITO conductive coating is controlled through the temperature sensor or the thermistor.
Further, the conductive frame comprises a bottom frame and side frames positioned around the bottom frame, the display window is configured on the bottom frame, a plurality of positioning holes are formed in at least one side frame, a protection frame wrapping the periphery of the display screen is arranged on the display screen, and positioning blocks corresponding to the positioning holes are arranged on the protection frame.
Further, the positioning block is a wedge-shaped block protruding laterally, the thickness of the wedge-shaped block is increased along the direction far away from the bottom frame, and a clamping surface contacted with the edge of the positioning hole is formed at the end part of the maximum thickness.
Further, the protection frame is a plastic basket, and the positioning blocks and the protection frame are integrally formed.
Further, the conductive frame is a metal frame, the side frames are metal sheets, and gaps are arranged between the adjacent side frames, so that the side frames have elasticity capable of slightly deforming outwards.
Further, the elastic conductive layer is conductive foam, and the conductive foam is adhered to the bottom frame around the display window through glue.
Further, a buffer shock-absorbing layer is arranged between the display module and the circuit board.
Further, the bearing piece is a circuit board, a fixing hole is formed in the circuit board, and torsion feet connected with the fixing hole are arranged on the side frames.
Further, one side of the fixing hole is provided with a fixing block matched with the torsion foot, and the fixing block is provided with a micro gradient.
The utility model has the beneficial effects that:
1. By arranging the heating glass and arranging the ITO conductive coating on the surface of the display screen, on one hand, the heating glass and the ITO conductive coating can heat the display screen after being electrified, so that the low-temperature resistance of the display module can be improved, on the other hand, the ITO conductive coating can shield electromagnetic interference, and the electromagnetic interference resistance of the display module can be further improved.
2. The utility model can effectively prevent the display screen from being damaged in the assembly process by arranging the protective frame outside the display screen, and can ensure that the protective frame and the metal frame can be positioned with high precision in the assembly process by arranging the positioning structure on the conductive frame and the protective frame, thereby preventing the product consistency and the electromagnetic shielding performance from being influenced by relative displacement of the conductive frame and the protective frame in the assembly process.
3. According to the utility model, the conductive foam is used as the elastic conductive layer, so that the display screen and the conductive frame are in non-rigid contact, the impact resistance of the display module can be improved, the conductive foam is deformed and generates pretightening force by the extrusion force generated when the conductive frame is mounted on the bearing piece through twisting feet, the shock resistance can be improved, the conductive foam can be deformed and tightly attached, the electromagnetic shielding performance is improved, the shock absorption performance can be provided, and meanwhile, the positioning block and the positioning hole are matched, the mounting is accurate, the yield is high, and the protection performance on the display screen is good.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a military display module with low temperature resistance and high stability;
FIG. 2 is an exploded view of a low temperature resistant high stability military display module of the present utility model;
FIG. 3 is a side view of a low temperature resistant high stability military display module of the present utility model;
FIG. 4 is a cross-sectional view A-A of FIG. 3;
FIG. 5 is a schematic view A of FIG. 4 in partial enlargement;
FIG. 6 is a schematic view of a display screen according to the present utility model;
fig. 7 is a schematic view of a conductive frame according to the present utility model.
100-Bearing piece, 110-fixing hole, 120-fixing block;
200-conductive frames, 210-bottom frames, 211-display windows, 220-side frames, 221-positioning holes, 222-flat cable holes, 223-torsion feet and 224-gaps;
300-an elastic conductive layer;
400-display module, 410-backlight assembly, 420-heating glass, 430-display screen, 431-ITO conductive coating, 432-protective frame, 433-positioning block, 434-flat cable;
500-cushioning layer.
Detailed Description
Embodiments of the present utility model are described in further detail below with reference to the accompanying drawings and examples. The following examples are illustrative of the utility model but are not intended to limit the scope of the utility model.
In the description of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected" and "connected" are to be construed broadly, and for example, they may be fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
As shown in fig. 1, 2 and 6, the present utility model provides a low temperature resistant and high stability military display module, comprising:
a carrier 100;
the conductive frame 200 is provided with at least one display window 211;
an elastic conductive layer 300 disposed on the conductive frame 200 around the display window 211, and
The display module 400 comprises a backlight assembly 410, a heating glass 420 and a display screen 430 which are sequentially installed, wherein the display screen 430 is attached to the elastic conductive layer 300 and aligned to the display window 211, and an ITO conductive coating 431 is arranged on the surface of the display screen 430 aligned to the display window 211;
The conductive frame 200 is reversely fastened to the carrier 100 through detachable connection, so that the display module 400 is wrapped in a space between the conductive frame 200 and the carrier 100 to form a display module.
The utility model ensures the close contact between the ITO conductive coating 431 and the conductive frame 200 by utilizing the deformable characteristic of the elastic conductive layer 300 by arranging the elastic conductive layer 300 between the ITO conductive coating 431 arranged on the surfaces of the conductive frame 200 and the display screen 430, on one hand, the tightness of the low-temperature-resistant high-stability military display module can be improved, the service performance can be ensured, on the other hand, the reliability of electromagnetic shielding can be improved, the problem that the electromagnetic shielding performance is reduced due to the fact that the display screen 430 is not tightly connected with the conductive frame 200 due to the deformation and the unstable assembly of the conductive frame 200 is avoided, and the direct rigid contact between the display screen 430 and the conductive frame 200 is avoided by arranging the deformable elastic conductive layer 300, and the anti-seismic performance of the utility model is improved by flexible contact. In addition, by arranging the heating glass 420 and arranging the ITO conductive coating 431 on the surface of the display screen 430, on one hand, the heating glass 420 and the ITO conductive coating 431 can heat the display screen 430 after being electrified, so that the low-temperature resistance of the display module can be improved, and on the other hand, the ITO conductive coating 431 can shield electromagnetic interference, so that the electromagnetic interference resistance of the display module can be further improved.
As a preferred embodiment, the ITO conductive coating 431 is formed by plating an indium tin oxide film on the surface of the display screen 430 by sputtering, evaporation, or the like.
As a preferred embodiment, the sheet resistance of the ITO conductive coating 431 is less than 16 ohms, the ITO conductive coating 431 is connected to the flexible circuit board of the thermistor assembly through a heating wire, and the heating is controlled by a temperature control module disposed on the flexible circuit board.
As a preferred embodiment, a temperature sensor or a thermistor may be further disposed on the surface of the liquid crystal screen, and the heating power of the ITO conductive coating 431 is controlled by the temperature sensor or the thermistor, so as to control the use temperature range of the display module.
In some embodiments, as shown in fig. 2, a heating glass 420 is disposed between the carrier 100 and the display module 400, the heating glass 420 and the display screen 430 are fixed by using adhesive, and the heating glass 420 can heat the display screen 430 after being electrified, so as to further improve the low temperature resistance of the display screen 430.
In some embodiments, as shown in fig. 2 and fig. 7, the conductive frame 200 includes a bottom frame 210 and side frames 220 located around the bottom frame 210, the display window 211 is configured on the bottom frame 210, at least one side frame 220 is provided with a plurality of positioning holes 221, the display screen 430 is provided with a protection frame 432 wrapping around the display screen, and the protection frame 432 is provided with positioning blocks 433 corresponding to the positioning holes 221. In addition, the utility model ensures that the display screen 430 and the conductive frame 200 can be accurately positioned during assembly by arranging the matching of the positioning block 433 and the positioning hole 221, thereby effectively preventing the display screen 430 and the conductive frame 200 from relative displacement during assembly.
As shown in fig. 2 and 5, as a preferred manner, the positioning block 433 is a wedge-shaped block protruding laterally, the thickness of the wedge-shaped block is increased along the direction away from the bottom frame 210, and a clamping surface contacting with the edge of the positioning hole 221 is formed at the end of the maximum thickness, and by providing the wedge-shaped positioning block 433, the positioning block 433 can be easily clamped in the positioning hole 221 according to wedge-shaped guiding without additional tools.
In some preferred embodiments, at least one positioning hole 221 is provided on each side frame 220, and the number and positions of the positioning blocks 433 are corresponding to those of the positioning holes 221, which can achieve complete positioning around the display screen 430, for example, in fig. 7, two positioning holes 221 are provided on each side frame 220.
In some embodiments, as shown in fig. 2 and 5, the protection frame 432 is a plastic basket, the positioning block 433 and the protection frame 432 are integrally formed, the plastic basket has low cost, can satisfy better protection effect, and is easy to form. The plastic basket itself can be fixed around the display screen 430 by gluing, and certainly, as a basic common sense, the plastic basket also needs to be provided with an outlet of the flat cable of the display screen 430.
In some embodiments, as shown in fig. 7, the conductive frame 200 is a metal frame, the side frames 220 are metal sheets, and gaps 224 are configured between adjacent side frames 220, so that the side frames 220 have elasticity capable of slightly deforming outwards, when the wedge blocks press the side frames 220 in the process of assembling the protective frame 432, the side frames 220 can slightly deform outwards, and when the wedge blocks reach the positioning holes 221, the side frames 220 rebound rapidly, so that the assembly requirement is met, the gaps 224 between the plastic basket and the side frames 220 of the conductive frame 200 are minimized, the assembly precision of the relative positions between the display screen 430 and the conductive frame 200 is improved, the assembly of the display screen 430 is firm, and the anti-seismic performance is improved.
In some embodiments, as shown in fig. 2, the elastic conductive layer 300 is conductive foam, and the conductive foam is adhered to the bottom frame 210 around the display window 211 by glue, and the glue manner includes, but is not limited to, solid glue, liquid glue, double-sided glue, or conductive glue with a back glue, and the conductive foam is used as the elastic conductive layer 300, so that the requirement is met and the cost is low.
In some embodiments, as shown in fig. 2, the carrier 100 is a circuit board, and may specifically be a PCB circuit board, the circuit board is provided with a long strip-shaped fixing hole 110, the side frame 220 is provided with a torsion leg 223 connected to the fixing hole 110, one side of the fixing hole 110 is provided with a fixing block 120 matched with the torsion leg 223, and the fixing block 120 is provided with a slight gradient. By providing the fixing hole 110, the torsion leg 223 passes through the fixing hole 110, so that the installation and positioning of the conductive frame 200 and the carrier 100 can be rapidly realized, and the assembly precision and the assembly efficiency can be further improved. The utility model is connected with the micro-gradient fixing block 120 in a buckling way through the torsion leg 223, is convenient to assemble and disassemble, has proper tightness, can not cause the unstable equipment and the damage to the display screen 430 due to the loose installation and can not cause the damage to the display screen 430 due to the loose installation, the pretightening force can be provided between the connection of the metal frame and the circuit board through the fixing block 120 with the micro-gradient, the buckling connection is not easy to loosen even if the metal frame is subjected to severe vibration and impact, and when the torsion leg 223 is twisted, the best matching between the torsion leg 223 and the fixing block 120 can be realized by only needing a small torsion angle, so that the torsion is more time-saving and labor-saving, the torsion leg 223 is not easy to break even if the torsion leg 223 is used for a long time, and the service life can be prolonged.
In some embodiments, as shown in fig. 2, a buffer shock-absorbing layer 500 is disposed between the display module 400 and the circuit board, and the buffer shock-absorbing layer 500 may be a buffer foam to improve shock resistance, and the buffer foam may be integrally attached to the back of the backlight assembly 410, or may be a plurality of small modules, so long as flexible contact and firm fixation between the back of the display module 400 and the circuit board are ensured.
In some embodiments, the side frames 220 of the conductive frame 200 are provided with a plurality of wire-arranging holes for the wires 434 of the display screen 430 to be led out, and in the example of fig. 7, two long side frames 220 of the rectangular frame are respectively provided with a second wire-arranging hole 223 for the wires 434 of the display screen 430 to be led out.
The utility model also provides an assembling method of the display module in the optimal embodiment, which comprises the following steps of attaching conductive foam to the periphery of the display window 211 on the bottom frame 210 through conductive adhesive, plating ITO conductive coating 431 on the surface of the display screen 430, installing a plastic basket around the display screen 430, enabling positioning blocks 433 around the protective frame 432 to enter into positioning holes 221 of the side frames 220 to be clamped and fixed, fixing the display screen 430 and the conductive frame 200, then adhering heating glass 420 on the surface of the display screen 430 far away from the display window 211, installing a backlight assembly 410, forming a display assembly, reversely buckling the display assembly on a circuit board, enabling torsion pins 223 to penetrate from a fixed block 110 on the circuit board to the back, and twisting the torsion pins 223, so that micro-pressure is generated between the end parts of the torsion pins 223 and the micro-gradient fixed block 120, and assembling the low-temperature resistant high-stability military display module is completed.
The above embodiments are only for illustrating the present utility model, and are not limiting of the present utility model. While the utility model has been described in detail with reference to the embodiments, those skilled in the art will appreciate that various combinations, modifications, and substitutions can be made thereto without departing from the spirit and scope of the utility model as defined in the appended claims.
Claims (10)
1. The utility model provides a for military use display module assembly of low temperature resistant high stability which characterized in that includes:
A carrier;
The conductive frame is at least provided with a display window;
An elastic conductive layer arranged on the bottom frame around the display window, and
The display module comprises a backlight assembly, heating glass and a display screen which are sequentially installed, wherein the display screen is attached to the elastic conductive layer and aligned to the display window, and an ITO conductive coating is arranged on the surface of the display screen aligned to the display window;
The conductive frame is detachably connected and reversely buckled on the bearing piece, so that the display module is wrapped in a space between the conductive frame and the bearing piece to form the display module.
2. The military display module with low temperature resistance and high stability according to claim 1, wherein a temperature sensor or a thermistor is arranged on the surface of the display screen, and the heating power of the ITO conductive coating is controlled through the temperature sensor or the thermistor.
3. The military display module set of claim 1, wherein the conductive frame comprises a bottom frame and side frames positioned around the bottom frame, the display window is configured on the bottom frame, at least one side frame is provided with a plurality of positioning holes, the display screen is provided with a protective frame wrapping the periphery of the display window, and the protective frame is provided with positioning blocks corresponding to the positioning holes.
4. The military display module of claim 3, wherein the positioning block is a wedge block protruding laterally, the thickness of the wedge block is increased along the direction away from the bottom frame, and a clamping surface contacting with the edge of the positioning hole is formed at the end of the maximum thickness.
5. The military display module of claim 4, wherein the protective frame is a plastic basket, and the positioning blocks and the protective frame are integrally formed.
6. A low temperature resistant and high stability military display module according to claim 3 wherein said conductive frame is a metal frame, said side frames are sheet metal, and gaps are provided between adjacent side frames to provide the side frames with flexibility capable of micro-deformation to the outside.
7. The military display module set of claim 1, wherein the elastic conductive layer is conductive foam, and the conductive foam is adhered to a bottom frame around the display window by glue.
8. The military display module of claim 7, wherein a buffer layer is disposed between the display module and the circuit board.
9. The military display module set of claim 3, wherein the carrier is a circuit board, the circuit board is provided with fixing holes, and the side frames are provided with torsion legs for connecting with the fixing holes.
10. The military display module of claim 9, wherein one side of the fixing hole is provided with a fixing block matched with the torsion leg, and the fixing block is provided with a micro gradient.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421485453.3U CN222785014U (en) | 2024-06-26 | 2024-06-26 | A military display module with low temperature resistance and high stability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421485453.3U CN222785014U (en) | 2024-06-26 | 2024-06-26 | A military display module with low temperature resistance and high stability |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222785014U true CN222785014U (en) | 2025-04-22 |
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ID=95384198
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202421485453.3U Active CN222785014U (en) | 2024-06-26 | 2024-06-26 | A military display module with low temperature resistance and high stability |
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| Country | Link |
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| CN (1) | CN222785014U (en) |
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