Anti-glare and anti-electromagnetic interference touch module

Abstract

The application belongs to the technical field of touch modules, and discloses an anti-glare and anti-electromagnetic interference touch module, which comprises an anti-glare layer, one end of the anti-glare layer is connected with a touch sensing layer, one end of the touch sensing layer away from the anti-glare layer is connected with an anti-electromagnetic interference layer, and one end of the anti-electromagnetic interference layer away from the touch sensing layer is connected with a support back plate for supporting and protecting; the anti-glare layer adopts acrylic substrate and nano-silicon dioxide columnar structure, is matched with 0.1mm silicone optical adhesive layer and 50nm titanium dioxide nanoparticles, scatters strong light into diffuse reflection light, reduces the interface reflectivity to below 3% through refractive index gradient matching, provides a clear optical environment for the touch sensing layer, and ensures the visibility of touch operation.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of touch modules, and specifically relates to an anti-glare and anti-electromagnetic interference touch module. BACKGROUND

[0002] With the popularity of electronic devices, users have increasingly high requirements for touch display devices. The existing touch module has the following problems in some scenarios: in a strong light environment, the screen reflects light seriously, making it difficult to see the display content; meanwhile, the electromagnetic interference problem between electronic devices is increasingly prominent, affecting the normal working accuracy and stability of the touch module. The traditional touch module adopts a simple multi-layer lamination structure, which cannot effectively solve the above problems, and the bonding strength between the functional layers and the overall mechanical strength also have room for improvement, and cannot meet the long-term stable working requirements of the device in a complex use environment.

[0003] The patent with the application number CN202121514338.0 discloses an anti-glare and anti-electromagnetic interference touch module, which ensures the safe operation of the operator under strong optical fiber irradiation. It comprises: a capacitive touch screen comprising a transparent base, a capacitive sensor group and a surface passivation layer, the first surface of the transparent base is provided with the capacitive sensor group, the first surface of the transparent base is encapsulated with the surface passivation layer, and the surface passivation layer encapsulates and arranges the capacitive sensor group; a PET film assembly comprising a PET film body and an anti-glare film, the second surface of the PET film body is integrated with the anti-glare film; an anti-electromagnetic interference film, which is specifically an ITO film assembly integrated with a pattern, the pattern on the ITO film assembly is arranged according to the position of the capacitive sensor group integrated with the capacitive touch screen; the second surface of the transparent base is attached to the first surface of the PET film body, and the exposed surface of the anti-glare film is attached to the first surface of the ITO module. The above scheme only improves the touch module by improving the material, and cannot adjust the use state of the touch module according to the temperature and different electromagnetic sizes during use.

[0004] Therefore, in order to solve the above technical problems, the application provides an anti-glare and anti-electromagnetic interference touch module. SUMMARY

[0005] The application aims to solve the above problems, and provides an anti-glare and anti-electromagnetic interference touch module, which has an optical-electromagnetic-mechanical synergistic optimization structure, and has the advantages of stable connection structure and good heat dissipation state.

[0006] In order to achieve the above object, the present application provides the following technical scheme: A kind of anti-glare anti-electromagnetic interference touch module, including anti-glare layer, one end of the anti-glare layer is connected with touch sensing layer, the end of the touch sensing layer away from the anti-glare layer is connected with anti-electromagnetic interference layer, the end of the anti-electromagnetic interference layer away from the touch sensing layer is connected with support backboard for supporting protection;

[0007] Multiple connection components for connecting and constraining touch sensing layer and anti-electromagnetic interference layer are connected on one end of the support backplate close to the anti-electromagnetic interference layer, and a detection sensor is connected on one end of the support backplate close to the anti-electromagnetic interference layer.

[0008] Preferably, the support backplate includes a carrier plate, a reinforcing rib is connected on the carrier plate, and multiple insulating blocks for supporting and fixing are connected on one end of the carrier plate close to the anti-electromagnetic interference layer, the insulating blocks are symmetrically distributed on the carrier plate, and the insulating blocks are in contact with the anti-electromagnetic interference layer.

[0009] Preferably, the support backplate further includes a ventilation hole, a heat dissipation component is connected on the ventilation hole, and the heat dissipation efficiency of the heat dissipation component can be controlled by the detection sensor.

[0010] Preferably, the connection component includes a sleeve, the sleeve penetrates through the support backplate, and a limiting plate is connected on one end of the sleeve away from the anti-electromagnetic interference layer.

[0011] Preferably, the connection component further includes an elastic rod, one end of the elastic rod is connected with the sleeve, a threaded sleeve is connected on one end of the elastic rod away from the sleeve, a threaded rod is threadedly connected in the threaded sleeve, and a fixing plate is connected on one end of the threaded rod away from the threaded sleeve.

[0012] Preferably, a contact component is connected on one end of the fixing plate away from the threaded rod, and the contact component is in contact with the anti-glare layer.

[0013] Preferably, the anti-glare layer adopts an acrylic substrate and a nano-sized silicon dioxide columnar structure.

[0014] Preferably, the touch sensing layer is composed of an indium tin oxide grid and a silver nanowire composite conductive layer.

[0015] Preferably, the surface of the heat dissipation component is coated with a paraffin-based phase change material, when the temperature exceeds the melting point, the phase change material absorbs latent heat and slows down the temperature rise rate, and a louver driven by a shape memory alloy is embedded in the ventilation hole

[0016] Compared with the prior art, the present application has the following advantages:

[0017] The anti-glare layer adopts acrylic substrate and nano-sized silicon dioxide columnar structure, is matched with 0.1mm silicone optical glue layer and 50nm titanium dioxide nanoparticles, scatters strong light into diffuse reflection light, reduces the interface reflectivity to below 3% through refractive index gradient matching, provides a clear optical environment for the touch sensing layer, and ensures the visibility of touch operation.

[0018] The anti-electromagnetic interference layer forms a grounding loop with the graphene layer in the support back plate, shields external electromagnetic interference; the detection sensor monitors the electromagnetic intensity in real time, and when the electromagnetic intensity is >50mT, the microcontroller sends an enhanced driving signal to the touch sensing layer, which increases the working current by 20%, compensates for the signal attenuation caused by electromagnetic interference, and ensures stable transmission of the touch signal.

[0019] On the aluminum alloy-graphene composite bearing plate of the support back plate, the trapezoidal flow guide groove-shaped reinforcing ribs and the ventilation holes form a heat dissipation channel, the built-in thermistor of the detection sensor monitors the temperature in real time, the surface paraffin-based phase change material of the heat dissipation assembly absorbs heat, and the ventilation hole angle of the shape memory alloy driven louver is controlled, combined with the thermal stress release of the shape memory alloy elastic rod in the connecting assembly, a three-level heat dissipation mechanism is formed, and the aluminum oxide ceramic insulating block provides uniform support, ensuring the mechanical strength and heat dissipation stability of the module in different temperature environments. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the exploded view of the three-dimensional structure of the overall device of the application;

[0021] Figure 2 It is a cross-sectional structure schematic diagram of the overall device of the application;

[0022] Figure 3 It is a three-dimensional structure schematic diagram of the support back plate of the application;

[0023] Figure 4 It is a cross-sectional structure schematic diagram of the support back plate of the application;

[0024] Figure 5 It is a three-dimensional structure schematic diagram of the connecting assembly of the application;

[0025] Figure 6 It is a cross-sectional structure schematic diagram of the connecting assembly of the application.

[0026] BRIEF DESCRIPTION OF DRAWINGS: 1, anti-glare layer; 2, touch sensing layer; 3, anti-electromagnetic interference layer; 4, support back plate; 401, bearing plate; 402, insulating block; 403, reinforcing rib; 404, ventilation hole; 5, connecting assembly; 501, fixed plate; 502, threaded sleeve; 503, sleeve; 504, limiting plate; 505, elastic rod; 506, threaded rod; 6, heat dissipation assembly; 7, detection sensor; 8, touch resistance assembly. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0028] As shown in the drawings, Figures 1-6 A glare-proof and anti-electromagnetic interference touch module includes a glare-proof layer 1 for facilitating a user to watch, ensuring the comfort of the user during use, a touch sensing layer 2 for touch control is connected to one end of the glare-proof layer 1, and a 0.1mm-thick silicone optical adhesive layer is additionally provided between the glare-proof layer 1 and the touch sensing layer 2, the refractive index of which forms a gradient match with the acrylic substrate and the ITO layer, reducing the interface reflectivity to below 3%, and titanium dioxide nanoparticles with a diameter of 50nm are embedded in the adhesive layer to further weaken the glare through light scattering, an anti-electromagnetic interference layer 3 for preventing external electromagnetic interference with the touch module is connected to the end of the touch sensing layer 2 away from the glare-proof layer 1, and a support backboard 4 for supporting and protecting is connected to the end of the anti-electromagnetic interference layer 3 away from the touch sensing layer 2, which is used as a support to connect and fix the touch module, ensuring the comfort and stability of the touch module during use.

[0029] A plurality of connection assemblies 5 for connecting and constraining the touch sensing layer 2 and the anti-electromagnetic interference layer 3 are connected to the support backboard 4, which are connected and fixed by the connection assemblies 5 to ensure that they will not fall off during use, and a detection sensor 7 for identifying the working state of the touch module is connected to the end of the bearing plate 401 close to the anti-electromagnetic interference layer 3, wherein the detection sensor 7 is a composite sensor with a thermistor and a Hall effect magnetometer connected inside to monitor the working state of the touch module.

[0030] When the detection sensor 7 identifies that the temperature of the touch module is ≥55℃, the fan of the heat dissipation assembly 6 is started and the pressure relief of the elastic rod 505 is triggered.

[0031] When the detection sensor 7 identifies that the electromagnetic intensity is >50mT, an enhanced driving signal (current increase of 20%) is sent to the touch sensing layer 2 to compensate for the signal attenuation caused by electromagnetic interference.

[0032] Further, the support back plate 4 comprises a bearing plate 401 which is made of an aluminum alloy-graphene composite plate, and the graphene layer and the electromagnetic interference resistant layer 3 form a grounding loop through conductive glue, thereby enhancing the shielding effect in the high frequency band. The bearing plate 401 is connected with a reinforcing rib 403 which has a trapezoidal flow channel shape and forms a heat dissipation channel with the ventilation hole 404. When the heat dissipation assembly 6 is started, the airflow speed in the channel is increased by 40%, and a plurality of insulating blocks 402 for support and fixation are connected to one end of the bearing plate 401 close to the electromagnetic interference resistant layer 3. The insulating blocks 402 are made of aluminum oxide ceramic and provide uniform support while isolating electromagnetic interference. The insulating blocks 402 are symmetrically distributed on the bearing plate 401 and are in contact with the electromagnetic interference resistant layer 3, thereby avoiding damage to the bearing plate 401 caused by electromagnetic interference during the operation of the electromagnetic interference resistant layer 3 and affecting the normal use of the touch module.

[0033] Further, in order to ensure that the touch module does not have a situation that affects its service life due to high temperature during use, the support back plate 4 further comprises a ventilation hole 404 for heat dissipation. The ventilation hole 404 is provided with a louver driven by a shape memory alloy. When the temperature is less than 40℃, the aperture of the ventilation hole 404 is small, reducing the efficiency of dust entering the touch module, thereby reducing the interference of dust on the touch module during use. The ventilation hole 404 is connected with a heat dissipation assembly 6, and the surface of the heat dissipation assembly 6 is coated with a paraffin-based phase change material. In the present application, the structure of the heat dissipation assembly 6 is preferably a fan state. When the temperature exceeds the melting point, the phase change material absorbs latent heat, delaying the temperature rise rate, and the heat dissipation efficiency of the heat dissipation assembly 6 can be controlled by a detection sensor 7.

[0034] When the temperature is less than 40℃: the heat dissipation assembly 6 is dormant, and the memory metal of the elastic rod 505 maintains a pre-compression amount of 1mm, providing a fixed support force.

[0035] When the temperature is greater than or equal to 55℃: the heat dissipation assembly 6 is started, and the louver structure on the ventilation hole 404 is fully opened, increasing the heat dissipation area by 30% to improve the heat dissipation rate.

[0036] When the temperature is greater than or equal to 55℃: the heat dissipation assembly 6 is started, and the louver structure on the ventilation hole 404 is fully opened, increasing the heat dissipation area by 30% to improve the heat dissipation rate.

[0037] Further, the connecting assembly 5 comprises a sleeve 503 which penetrates the support back plate 4, and a limiting plate 504 is connected to one end of the sleeve 503 away from the electromagnetic interference resistant layer 3, thereby ensuring that the connecting assembly 5 is always connected with the support back plate 4 during connection and use, while maintaining the connection tightness of the touch module.

[0038] Further, the connecting assembly 5 further comprises an elastic rod 505 made of shape memory alloy, one end of the elastic rod 505 is connected with the sleeve 503, a threaded sleeve 502 is connected at the end of the elastic rod 505 away from the sleeve 503, a threaded rod 506 is threadedly connected in the threaded sleeve 502, so that the stability of the connection between the touch sensing layer 2 and the anti-electromagnetic interference layer 3 is ensured through the threaded connection of the threaded rod 506 and the threaded sleeve 502, and a fixing plate 501 is connected at the end of the threaded rod 506 away from the threaded sleeve 502, so that the state of the threaded rod 506 can be controlled through the fixing plate 501.

[0039] Further, the fixing plate 501 is connected at the end away from the threaded rod 506, and a resisting assembly 8 for identifying the connection state of the anti-glare layer 1 is arranged, the resisting assembly 8 is connected with the anti-glare layer 1 in resistance, and when the touch module falls, that is, the anti-glare layer 1 contacts with a hard object, the resisting assembly 8 is used for buffering to prevent the touch sensing layer 2 and the anti-electromagnetic interference layer 3 from being damaged.

[0040] Further, the anti-glare layer 1 adopts an acrylic substrate and a nano-sized silicon dioxide columnar structure.

[0041] Further, the touch sensing layer 2 is composed of an indium tin oxide grid and a silver nanowire composite conductive layer.

[0042] When the electromagnetic intensity > 50mT: the microcontroller sends an enhanced driving signal to the touch sensing layer 2 to increase the working current by 20% to compensate for the signal attenuation caused by electromagnetic interference.

[0043] Specifically, the detection sensor 7 collects the temperature T and the electromagnetic intensity B in real time, and the microcontroller processes according to the following logic: if T≥55℃ and B≤50mT: only start the heat dissipation assembly 6 and the air outlet size of the ventilation hole 404; if T<55℃ and B>50mT: only increase the driving current of the touch sensing layer 2; if T≥55℃ and B>50mT: start the heat dissipation assembly 6 and the current compensation at the same time.

[0044] When working, the anti-glare layer 1 adopts an acrylic substrate and a nano-sized silicon dioxide columnar structure, cooperates with a 0.1mm silicone optical adhesive layer and 50nm titanium dioxide nanoparticles therein, scatters strong light into diffuse reflection light, and reduces the interface reflectivity to below 3% through refractive index gradient matching to provide a clear optical environment for the touch sensing layer 2. The touch sensing layer 2 is composed of an indium tin oxide grid and a silver nanowire composite conductive layer, after receiving a touch signal, the anti-electromagnetic interference layer 3 shields external electromagnetic interference through its own structure and the grounding loop formed with the graphene layer in the supporting back plate 4 to ensure stable signal transmission.

[0045] On the aluminum alloy-graphene composite bearing plate 401 supporting the back plate 4, the trapezoidal flow guide groove-shaped reinforcing ribs 403 and the ventilation holes 404 form a heat dissipation channel, and the aluminum oxide ceramic insulating blocks 402 are symmetrically distributed and resist the electromagnetic interference layer 3, which not only isolates electromagnetism but also provides uniform support. In the connecting assembly 5, the sleeve 503 penetrates the support back plate 4, the limiting plate 504 fixes one end thereof, the elastic rod 505 made of shape memory alloy material initially maintains a pre-compression amount of 1 mm, and through the threaded connection of the threaded rod 506 and the threaded sleeve 502, the fixed plate 501 is tightly pressed against the anti-dazzle layer 1, realizing mechanical connection and pre-tightening fixation of each layer.

[0046] The built-in thermistor and Hall effect magnetometer in the detection sensor 7 monitor the temperature and electromagnetic intensity in real time: when the temperature < 40℃, the heat dissipation assembly 6 is dormant, the louvers driven by the shape memory alloy maintain small apertures in the ventilation holes 404 to reduce dust intrusion, and the elastic rod 505 maintains a pre-compressed state;

[0047] When 40℃≤temperature < 55℃, the elastic rod 505 phase transition elongates 0.5mm to release the interlayer thermal stress, and the paraffin-based phase change material coated on the surface of the heat dissipation assembly 6 starts to absorb latent heat, delaying temperature rise;

[0048] When the temperature ≥ 55℃, the fan of the heat dissipation assembly 6 starts, the louvers on the ventilation holes 404 are fully opened to increase the heat dissipation area by 30%, the airflow along the reinforcing rib 403 guide groove increases the flow rate by 40%, and at the same time, the elastic rod 505 further releases pressure, cooperating with the phase change material to continuously absorb heat, forming a three-stage heat dissipation mechanism.

[0049] If the electromagnetic intensity > 50mT, the detection sensor 7 triggers the microcontroller to send an enhanced driving signal to the touch sensing layer 2, increasing the working current by 20% to compensate for the signal attenuation caused by electromagnetic interference.

[0050] When the temperature ≥ 55℃ and the electromagnetic intensity > 50mT, the system simultaneously starts the heat dissipation assembly 6 and current compensation.

[0051] When the temperature ≥ 55℃ and the electromagnetic intensity ≤ 50mT, the heat dissipation assembly 6 is started and the opening size of the louvers on the ventilation holes 404 controls the heat dissipation.

[0052] When the temperature < 55℃ and the electromagnetic intensity > 50mT, only the driving current of the touch sensing layer 2 is increased.

[0053] The entire module realizes the synergistic optimization of optical performance, touch accuracy, mechanical strength, and environmental adaptability under multiple working conditions through the optical synergy of the anti-dazzle layer 1 and the optical adhesive layer, the dynamic stress adjustment of the connecting assembly 5, the temperature closed-loop regulation of the heat dissipation assembly 6 and the detection sensor 7, and the electromagnetic protection of the anti-electromagnetic interference layer 3 and the signal compensation mechanism, ensuring stable operation in complex scenes such as strong light, high temperature, and electromagnetic interference.

[0054] It is to be understood that the terminology "including", "comprising", or any other variation thereof, is intended to cover a non-exclusive inclusion such that process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0055] While the embodiments of the application have been shown and described, it is to be understood that the application is not limited to these embodiments. Since modifications, variations, replacements and changes can be made to these embodiments without departing from the principles and spirit of the application, the scope of the application is defined by the appended claims and their equivalents.

Claims

1. An anti-glare anti-electromagnetic interference touch module, comprising an anti-glare layer (1), characterized in that: One end of the anti-glare layer (1) is provided with a touch sensing layer (2), the other end of the touch sensing layer (2) is provided with an anti-electromagnetic interference layer (3), the other end of the anti-electromagnetic interference layer (3) is provided with a support backboard (4) for supporting protection. A plurality of connecting components (5) for connecting and constraining the touch sensing layer (2) and the anti-electromagnetic interference layer (3) are connected to the support backboard (4), and a detection sensor (7) is connected to one end of the support backboard (4) close to the anti-electromagnetic interference layer (3). The support backboard (4) comprises a bearing plate (401), a reinforcing rib (403) is connected to the bearing plate (401), and a plurality of insulating blocks (402) for supporting and fixing are connected to one end of the bearing plate (401) close to the anti-electromagnetic interference layer (3), the insulating blocks (402) are symmetrically distributed on the bearing plate (401), and the insulating blocks (402) are in contact with the anti-electromagnetic interference layer (3). The support backboard (4) further comprises a ventilation hole (404), and a heat dissipation component (6) is connected to the ventilation hole (404), and the heat dissipation efficiency of the heat dissipation component (6) can be controlled by the detection sensor (7). The connecting component (5) comprises a sleeve (503), the sleeve (503) penetrates the support backboard (4), and the other end of the sleeve (503) is connected to a limiting plate (504). The connecting component (5) further comprises an elastic rod (505), one end of the elastic rod (505) is connected to the sleeve (503), the other end of the elastic rod (505) is connected to a threaded sleeve (502), the threaded sleeve (502) is internally threaded connected to a threaded rod (506), and the other end of the threaded rod (506) is connected to a fixed plate (501). The detection sensor (7) monitors temperature and electromagnetic intensity, when the temperature is less than 40℃, the heat dissipation component (6) is dormant, and the elastic rod (505) maintains a pre-pressing state; When the temperature is between 40℃ and 55℃, the elastic rod (505) changes in length to release interlayer thermal stress, and the heat dissipation component (6) absorbs latent heat to slow down temperature rise; When the temperature is greater than or equal to 55℃, the fan of the heat dissipation component (6) starts, the ventilation hole (404) is fully opened to increase the heat dissipation area, the airflow is lifted along the reinforcing rib (403) to increase the flow rate, and the elastic rod (505) is further released, cooperating with the phase change material to continuously absorb heat, forming a three-stage heat dissipation mechanism. 2.The anti-glare anti-EMI touch module according to claim 1, wherein: The other end of the fixed plate (501) is connected to a contact component (8), and the contact component (8) is in contact with the anti-glare layer (1). 3.The anti-glare anti-EMI touch module of claim 1, wherein: The anti-glare layer (1) adopts acrylic substrate and nano-sized silicon dioxide columnar structure. 4.The anti-glare and anti-EMI touch module of claim 1, wherein: The touch sensing layer (2) is composed of an indium tin oxide grid and a silver nanowire composite conductive layer.

5. The anti-glare anti-electromagnetic interference touch module according to claim 1, wherein: The heat dissipation assembly (6) is coated with a paraffin-based phase change material, which absorbs latent heat and delays the temperature rise rate when the temperature exceeds the melting point, and the ventilation hole (404) is internally provided with a shutter driven by an embedded shape memory alloy.

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