Touch liquid crystal display module

Abstract

The invention belongs to the technical field of liquid crystal display, and particularly relates to a touch liquid crystal display module which comprises a control mainboard and an outer frame arranged on the upper surface of the control mainboard, and a backlight layer, a color filter, a liquid crystal display layer, a polarization layer and a touch layer are sequentially arranged in the outer frame from bottom to top. The backlight layer comprises a substrate, a light guide plate, a diffusion sheet and a reflection sheet, the substrate, the light guide plate, the diffusion sheet and the reflection sheet are sequentially and fixedly connected from bottom to top, and a mounting groove is formed in the upper surface of the substrate. By arranging the light reflecting mechanism, the pressing heat dissipation mechanism and the airflow intensity early warning mechanism, light compensation when the LED lamp beads are damaged is achieved, and the emergency use requirement can be met; meanwhile, deformation generated by operation is used for assisting heat dissipation, and the heat dissipation efficiency is improved; in addition, early warning can be carried out in time when the display module is impacted by large external force, equipment damage is avoided, and stable operation of the display module is guaranteed in an all-around mode.

Description

Technical Field

[0001] The present invention belongs to the technical field of liquid crystal display, and particularly relates to a touch liquid crystal display module. Background Art

[0002] With the rapid development of electronic display technology, touch liquid crystal display modules are widely used in many fields such as smart phones, tablet computers, and in-vehicle central control systems. In these application scenarios, the stability and reliability of the display effect are crucial.

[0003] Currently, the backlight layer of existing touch liquid crystal display modules mostly uses multiple direct - type LED beads as light sources. For example, in the liquid crystal display module with direct - type LED with low power consumption disclosed in the publication number: CN113467130A. However, due to the large number of LED beads in the liquid crystal display module, local damage is likely to occur during long - term use or under external force impact. Once a local LED bead is damaged, the light output in the corresponding area will be weakened, resulting in darker local light in the liquid crystal display module. The existing display module lacks an effective mechanism to compensate for the brightness loss in these darker parts, seriously reducing the uniformity and clarity of the entire display screen. In some emergency situations, such as medical device displays and in - vehicle navigation where high requirements for display continuity are required, this local light dimness problem will cause the liquid crystal display module to stop working and cannot meet the urgent use needs of users, bringing great inconvenience to practical applications.

[0004] Therefore, a touch liquid crystal display module is proposed. Summary of the Invention

[0005] The object of the present invention is to solve the above problems and provide a touch liquid crystal display module.

[0006] To achieve the above object, the present invention adopts the following technical solutions: A touch liquid crystal display module includes a control main board and an outer frame arranged on the upper surface of the control main board. Inside the outer frame, a backlight layer, a color filter, a liquid crystal display layer, a polarizer layer, and a touch layer are sequentially arranged from bottom to top. The backlight layer includes a substrate, a light guide plate, a diffusion sheet, and a reflective sheet, and the substrate, the light guide plate, the diffusion sheet, and the reflective sheet are fixedly connected in sequence from bottom to top. It further includes: Multiple LED beads, an installation groove is formed on the upper surface of the substrate, and multiple LED beads are fixedly arranged inside the installation groove through electronic glue; Multiple thermistor sheets, which are fixedly arranged inside the installation groove, and multiple thermistor sheets are respectively located on one side of multiple LED beads, and the thermistor sheets are used to detect the surrounding temperature of the LED beads; Multiple reflective mechanisms are all arranged inside the substrate, and the multiple reflective mechanisms can extend to the periphery of the LED lamp beads for reflecting the light of adjacent LED lamp beads. A pressing heat dissipation mechanism is arranged on the substrate, and the pressing heat dissipation mechanism is used for assisting in heat dissipation inside the substrate. An air flow intensity warning mechanism is arranged on the side wall of the substrate, and the air flow intensity warning mechanism is used in cooperation with the pressing heat dissipation mechanism. The LED lamp beads, the thermistor sheet, the reflective mechanism, the pressing heat dissipation mechanism and the air flow intensity warning mechanism are all electrically connected to the control main board.

[0007] Preferably, the reflective mechanism includes a fixed disk fixedly arranged inside the substrate. Both sides of the upper surface of the fixed disk are fixedly provided with telescopic rods. The upper ends of the two telescopic rods are fixedly provided with the same moving disk. Springs are sleeved on the rod walls of the two telescopic rods, and the two ends of the springs are respectively fixedly connected to the fixed disk and the moving disk. An electromagnet is fixedly arranged on the upper surface of the fixed disk. A permanent magnet is fixedly arranged on the lower surface of the moving disk. Multiple uniformly distributed reflective strips are fixedly arranged on the edge of the upper surface of the moving disk. Multiple uniformly distributed extending openings are arranged inside the installation groove and at the periphery of the LED lamp beads. The positions of the reflective strips correspond to the extending openings.

[0008] Preferably, the reflective strips are designed in an arc structure. A 45° reflective inclined surface is arranged on the outer side of the reflective strips. The moving disk can block the multiple extending openings.

[0009] Preferably, the pressing heat dissipation mechanism includes a transparent pressing film fixedly arranged at the opening of the installation groove. Multiple uniformly distributed first heat dissipation holes are arranged on both sides of the substrate. Second heat dissipation holes are arranged on both sides of the outer frame and at positions corresponding to the multiple first heat dissipation holes.

[0010] Preferably, the transparent pressing film is made of polycarbonate film. The deformation of the transparent pressing film can accelerate the gas flow inside the installation groove and inside the substrate.

[0011] Preferably, the air flow intensity warning mechanism includes an external thread tube threadedly arranged inside the second heat dissipation hole. An internal thread tube is arranged inside the external thread tube. Connecting rods are fixedly arranged between the two sides of the internal thread tube and the inner walls of the two sides of the external thread tube. A gas pressure sensor is threadedly arranged inside the internal thread tube. An alarm is fixedly arranged at a corner of the upper surface of the control main board.

[0012] Preferably, a dust-proof net that blocks the gas pressure sensor is fixedly arranged on the inner wall of one end of the external thread tube.

[0013] Preferably, the outer frame is composed of four aluminum alloy plates combined together.

[0014] Compared with the existing technologies, the beneficial effects of the present invention are as follows: 1. Through the provided light reflection mechanism, when some of the LED beads are damaged, the thermistor detects the temperature change and feeds it back to the control main board. The control main board controls the light reflection strip to extend, and uses its 45° light reflection inclined surface to reflect the light of adjacent LED beads to the light guide plate, effectively making up for the light loss at the position of the damaged beads, reducing the local brightness difference, ensuring the display effect of the touch liquid crystal display module, and meeting the emergency use requirements.

[0015] 2. Through the provided pressing heat dissipation mechanism, by using the slight deformation generated by the user's operation on the touch layer, the force is transmitted through the components of each layer of the module to deform the transparent pressing film, squeezing the hot air in the installation groove into the substrate, and then discharging it through the first heat dissipation hole and the second heat dissipation hole, accelerating the heat dissipation speed inside the substrate. Moreover, when some of the LED beads are damaged and the light reflection strip extends to block the extension opening, the air flow path is changed, increasing the gas fluidity around the LED beads at other positions, improving its heat dissipation efficiency, and ensuring the stable operation of the touch liquid crystal display module.

[0016] 3. Through the provided air flow intensity warning mechanism, the gas pressure sensor in the air flow intensity warning mechanism monitors the hot air discharge pressure. When the pressure exceeds the threshold value, that is, it is judged that the module is subjected to a large contact impact force, an electrical signal is sent to the control main board in time, and the control main board starts the alarm to remind the user to reduce the contact external force, avoiding damage to the touch liquid crystal display module caused by continuous large external forces, and extending the service life of the device. Description of the Drawings

[0017] Figure 1 is a three-dimensional view of a touch liquid crystal display module provided by the present invention; Figure 2 is a three-dimensional view of a touch liquid crystal display module provided by the present invention after removing the outer frame; Figure 3 is a three-dimensional view of a substrate of a touch liquid crystal display module provided by the present invention; Figure 4 is a partial three-dimensional view inside the substrate of a touch liquid crystal display module provided by the present invention; Figure 5 is a three-dimensional view of a fixed disk, a movable disk and a light reflection strip of a touch liquid crystal display module provided by the present invention; Figure 6 is a three-dimensional view of an air flow intensity warning mechanism of a touch liquid crystal display module provided by the present invention.

[0018] In the figure: 1 is a control main board, 2 is an outer frame, 3 is a backlight layer, 31 is a substrate, 32 is a light guide plate, 33 is a diffusion sheet, 34 is a reflective sheet, 4 is a color filter, 5 is a liquid crystal display layer, 6 is a polarizing layer, 7 is a touch layer, 8 are LED lamp beads, 9 is a mounting groove, 10 are thermistor sheets, 11 is a light reflection mechanism, 111 is a fixed plate, 112 is a telescopic rod, 113 is a moving plate, 114 is a spring, 115 is an electromagnet block, 116 is a permanent magnet block, 117 is a reflective strip, 118 is an extension port, 12 is a pressing heat dissipation mechanism, 121 is a transparent pressing film, 122 is a first heat dissipation hole, 123 is a second heat dissipation hole, 13 is an air flow intensity warning mechanism, 131 is an external threaded tube, 132 is an internal threaded tube, 133 is a connecting rod, 134 is a gas pressure sensor, 135 is an alarm, 136 is a dust-proof net. Detailed implementation manners

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0020] As Figures 1-6 shown, a touch liquid crystal display module includes a control main board 1 and an outer frame 2 arranged on the upper surface of the control main board 1. The outer frame 2 is composed of four aluminum alloy plates combined. The aluminum alloy plates have good strength and heat dissipation performance. Inside the outer frame 2, a backlight layer 3, a color filter 4, a liquid crystal display layer 5, a polarizing layer 6, and a touch layer 7 are sequentially arranged from bottom to top. The backlight layer 3 includes a substrate 31, a light guide plate 32, a diffusion sheet 33, and a reflective sheet 34. The substrate 31, the light guide plate 32, the diffusion sheet 33, and the reflective sheet 34 are fixedly connected in sequence from bottom to top. It further includes: Multiple LED lamp beads 8. A mounting groove 9 is formed on the upper surface of the substrate 31. Multiple LED lamp beads 8 are fixedly arranged inside the mounting groove 9 through electronic glue. The light emitted by the multiple LED lamp beads 8 will sequentially irradiate the light guide plate 32, the diffusion sheet 33, the reflective sheet 34, the color filter 4, and the liquid crystal display layer 5, thereby realizing the display of images.

[0021] Multiple thermistor sheets 10 are fixedly arranged inside the mounting groove 9, and the multiple thermistor sheets 10 are respectively located on one side of the multiple LED lamp beads 8. The thermistor sheets 10 are used to detect the temperature around the LED lamp beads 8. When the multiple LED lamp beads 8 are lit and working, the temperature of the surrounding gas rises, and the thermistor sheets 10 at this position can monitor the temperature in real time.

[0022] A plurality of light reflecting mechanisms 11 are all arranged inside the substrate 31, and the plurality of light reflecting mechanisms 11 can extend to the periphery of the LED lamp beads 8 for reflecting the light of adjacent LED lamp beads 8. The light reflecting mechanism 11 includes a fixed disk 111 fixedly arranged inside the substrate 31. Both sides of the upper surface of the fixed disk 111 are fixedly provided with telescopic rods 112. The upper ends of the two telescopic rods 112 are fixedly provided with the same moving disk 113. The rod walls of the two telescopic rods 112 are both sleeved with springs 114, and the two ends of the springs 114 are respectively fixedly connected with the fixed disk 111 and the moving disk 113. An electromagnet block 115 is fixedly arranged on the upper surface of the fixed disk 111. A permanent magnet block 116 is fixedly arranged on the lower surface of the moving disk 113. A plurality of uniformly distributed light reflecting strips 117 are fixedly arranged on the edge of the upper surface of the moving disk 113. A plurality of uniformly distributed extending openings 118 are formed inside the installation groove 9 and located at the periphery of the LED lamp beads 8. The positions of the light reflecting strips 117 correspond to those of the extending openings 118. The light reflecting strips 117 are designed in an arc structure, and a 45° light reflecting inclined surface is arranged on the outer side of the light reflecting strips 117. The moving disk 113 can block the plurality of extending openings 118. When the power supply of the electromagnet block 115 is turned on, after the electromagnet block 115 is electrified, a magnetic repulsive force on the permanent magnet block 116 will be generated. Under the action of the repulsive force, the permanent magnet block 116 moves upward against the elastic force of the spring 114. The permanent magnet block 116 is connected to the moving disk 113 and stretches the telescopic rods 112. A plurality of light reflecting strips 117 are arranged on the surface of the moving disk 113. As the permanent magnet block 116 rises, until the light reflecting strips 117 extend upward from the extending openings 118, the plurality of light reflecting strips 117 after extension are exactly located at the periphery of the damaged LED lamp beads 8, and each light reflecting strip 117 is provided with a 45° light reflecting inclined surface. The light reflecting strips 117 can reflect the light emitted by the adjacent LED lamp beads 8 to the light guide plate 32, making up for the light loss at the position of the damaged LED lamp beads 8. When the power supply of the electromagnet block 115 is turned off, the electromagnet block 115 and the permanent magnet block 116 approach each other under the action of the spring 114, so that the light reflecting strips 117 are retracted inside the substrate 31.

[0023] The pressing heat dissipation mechanism 12 is disposed on the substrate 31, and the pressing heat dissipation mechanism 12 is used for auxiliary heat dissipation inside the substrate 31. The pressing heat dissipation mechanism 12 includes a transparent pressing film 121 fixedly arranged at the opening of the installation groove 9. The transparent pressing film 121 is made of polycarbonate film. During the production process of the polycarbonate film, an appropriate amount of toughening agent is added, such as methyl methacrylate-butadiene-styrene copolymer (MBS), ethylene-octene copolymer (POE), etc. These toughening agents can form flexible chain segments in the molecular structure of polycarbonate, enhance the intermolecular interaction, thereby improving the flexibility and fatigue resistance of the film, and reducing the possibility of fatigue cracks caused by long-term pressing. At the same time, a protective coating, such as a silicone coating, a polyurethane coating, etc., is coated on the surface of the polycarbonate film. The silicone coating has good flexibility, weather resistance and low surface energy, can effectively reduce the friction between the external object and the film surface, and improve the scratch resistance; in addition, the polycarbonate film is provided with an electromagnetic interference shielding coating to reduce the electromagnetic interference generated by the electromagnet block 115 and the permanent magnet block 116 below the transparent pressing film 121 on the upper components. The deformation of the transparent pressing film 121 can accelerate the gas flow inside the installation groove 9 and the substrate 31. The polycarbonate film has good optical properties and high light transmittance. When used as the transparent pressing film 121, it can minimize the influence on the light propagation of the display module, ensure the picture is clear and bright, and does not affect the normal display effect of the touch liquid crystal display module. At the same time, its mechanical properties are excellent, with good flexibility and elasticity. Under the tiny external force generated by finger operation on the touch layer 7, it can easily deform, effectively squeezing the hot air inside the installation groove 9. A plurality of uniformly distributed first heat dissipation holes 122 are opened on both sides of the substrate 31, and second heat dissipation holes 123 are opened on both sides of the outer frame 2 corresponding to the positions of the plurality of first heat dissipation holes 122. When operating the touch liquid crystal display module, the backlight layer 3, the color filter 4, the liquid crystal display layer 5, the polarizer 6 and the touch layer 7 will undergo tiny deformations. The force generated by this deformation is transmitted to the transparent pressing film 121, causing the transparent pressing film 121 to undergo corresponding deformations. At this time, the space inside the installation groove 9 is squeezed, so that the hot air is squeezed and enters the substrate 31 through the outlet 118. Subsequently, the hot air is discharged outward through the first heat dissipation holes 122 on both sides of the substrate 31 and the second heat dissipation holes 123 on both sides of the outer frame 2.

[0024] The air flow intensity warning mechanism 13 is arranged on the side wall of the substrate 31 and is used in cooperation with the pressing heat dissipation mechanism 12. The air flow intensity warning mechanism 13 includes an external thread tube 131 threadedly arranged inside the second heat dissipation hole 123. An internal thread tube 132 is arranged inside the external thread tube 131. Connecting rods 133 are fixedly arranged between the two sides of the internal thread tube 132 and the inner walls of the two sides of the external thread tube 131. A gas pressure sensor 134 is threadedly arranged inside the internal thread tube 132. An alarm 135 is fixedly arranged at a corner of the upper surface of the control main board 1. A dust-proof net 136 that blocks the gas pressure sensor 134 is fixedly arranged on the inner wall of one end of the external thread tube 131. The dust-proof net 136 can reduce the entry of external dust into the inside of the substrate 31 through the first heat dissipation hole 122 and the second heat dissipation hole 123. The hot air will flow through the surface of the gas pressure sensor 134. The gas pressure sensor 134 can accurately detect the air flow pressure of the hot air. Once the discharged air flow pressure value exceeds the set threshold, it indicates that the touch liquid crystal display module has received a large contact impact force and triggers the alarm 135 to give an alarm. During use, the dust-proof net 136 may be blocked by external dust, resulting in an increase in the air flow resistance of the first heat dissipation hole 122 and the second heat dissipation hole 123. At this time, the air flow pressure value detected by the gas pressure sensor 134 increases sharply, which will also trigger the alarm 135, and the alarm 135 will continue to sound, reminding the user to clean the dust-proof net 136.

[0025] The LED lamp beads 8, the thermistor sheets 10, the light reflecting mechanism 11, the pressing heat dissipation mechanism 12 and the air flow intensity warning mechanism 13 are all electrically connected to the control main board 1.

[0026] The operating principle of the present invention is now described as follows: when the touch liquid crystal display module is started, the control motherboard 1 will receive a start-up instruction, and then the control motherboard 1 controls multiple LED lamp beads 8 to start working, and the light emitted by the multiple LED lamp beads 8 will be irradiated to the light guide plate 32, the diffuser 33, the reflector 34, the color filter 4 and the liquid crystal display layer 5 in turn, wherein the function of the light guide plate 32 is to convert the point light source or line light source emitted by the LED lamp beads 8 into a surface light source, so that the light can be evenly distributed in the entire display area to ensure that the brightness of the screen is consistent, the diffuser 33 further scatters the light to make the light distribution more even, reduce the uneven brightness, and improve the softness of the display effect, and the reflector 34 is used to reflect the light facing away from the display area and redirect it to the display area, thereby improving the light. The utilization rate of the screen is increased, and the brightness of the screen is enhanced. The color filter 4 can filter the color of the light and allow light of different colors to pass through, thereby realizing rich and diverse color display and presenting colorful images. The liquid crystal display layer 5 changes the transmittance of the light by controlling the arrangement of the liquid crystal molecules, thereby realizing the display of images, such as displaying text, patterns, etc. At the same time, the polarizing layer 6 can make the light vibrate in a specific direction to ensure that only light with a specific polarization direction can pass through, thereby controlling the propagation direction of the light and improving the contrast and clarity of the image. The touch layer 7 is the key part for realizing human-computer interaction. When the user touches the screen, the touch layer 7 can sense the touch position and convert the touch signal into an electrical signal, which is transmitted to the control mainboard 1, thereby realizing various touch operations, such as clicking, sliding, zooming, etc. When the user operates the touch liquid crystal display module, the contact between the finger and the touch layer 7 generates an external force. Under the action of this external force, the touch layer 7, polarizer 6, liquid crystal display layer 5, color filter 4, reflector 34, diffusion sheet 33, and light guide plate 32 will deform to a certain extent towards the inside of the installation groove 9. The force generated by this deformation is transmitted to the transparent pressing film 121, causing the transparent pressing film 121 to deform accordingly. At this time, the space inside the installation groove 9 is squeezed, so that the hot air is squeezed and enters the inside of the substrate 31 through the outlet 118. Subsequently, the hot air is discharged outwards through the first heat dissipation holes 122 on both sides of the substrate 31 and the second heat dissipation holes 123 on both sides of the outer frame 2. This process speeds up the heat dissipation rate inside the substrate 31, effectively improving the heat dissipation efficiency of the touch liquid crystal display module and ensuring the stability of the operation of the touch liquid crystal display module. Although when operating the touch liquid crystal display module, the degree of pressing deformation caused by the contact between the finger and the touch layer 7 seems small, from a structural perspective, the layers inside the touch liquid crystal display module are closely connected. Even if a tiny external force acts on the touch layer 7, causing the polarizer 6, liquid crystal display layer 5, color filter 4, reflector 34, diffusion sheet 33, and light guide plate 32 to generate corresponding deformations in sequence, a structurally interconnected whole is formed. The tiny displacement of each layer can cleverly transmit the force and finally concentrate on the transparent pressing film 121. Analyzing from the material properties, the materials forming these components have certain flexibility and elasticity. When subjected to external forces, they will deform within their tolerable ranges, and their performance will not be negatively affected during the deformation process. For example, although the liquid crystal molecules in the liquid crystal display layer 5 are very small and arranged in an orderly manner, under a slight external force, the relative positions between the molecules will change subtly, driving the entire liquid crystal display layer 5 to deform. The diffusion sheet 33 and the light guide plate 32 are usually made of optical materials with good flexibility and can generate a certain amount of bending deformation under a tiny external force, thus creating conditions for heat transfer and dissipation; During the process of multiple LED lamp beads 8 lighting up and working, the thermistor sheet 10 provided on one side of them can monitor the temperature in real time. The thermistor sheet 10 is made of a semiconductor material that is extremely sensitive to temperature. The carrier concentration inside it will change significantly with the change of temperature. When the LED lamp beads 8 work and cause the surrounding temperature to rise, the electrons inside the semiconductor material obtain more energy, break free from the bondage of atoms to become free electrons, and at the same time generate more holes, resulting in an increase in the carrier concentration, an enhancement in the conductivity of the material, and a decrease in resistance. In a circuit with a constant voltage, according to Ohm's law, a decrease in resistance will lead to an increase in current. Therefore, the current flowing through the thermistor sheet 10 connected in the circuit increases. Connecting the thermistor sheet 10 to the measurement circuit can detect the change in the electrical signal of the thermistor sheet 10. This electrical signal is first processed by amplification and filtering, and then sent to the control main board 1; Once an individual LED lamp bead 8 is damaged and goes out, the temperature around this position will drop sharply. At this time, the carrier concentration inside the semiconductor material of the thermistor sheet 10 decreases, the conductivity weakens, the resistance increases, and then an electrical signal is fed back to the control main board 1. After receiving the feedback, the control main board 1 will immediately turn on the power supply of the electromagnet block 115 through the control circuit. After the electromagnet block 115 is powered on, it will generate a magnetic repulsive force on the permanent magnet block 116. Under the action of the repulsive force, the permanent magnet block 116 moves upward against the elastic force of the spring 114. The permanent magnet block 116 is connected to the moving disk 113 and stretches the telescopic rod 112. A plurality of reflective strips 117 are arranged on the surface of the moving disk 113. As the permanent magnet block 116 rises, until the reflective strips 117 extend upward from the outlet 118. After extension, the plurality of reflective strips 117 are exactly located outside the damaged LED lamp bead 8, and each reflective strip 117 is provided with a 45° reflective inclined surface. The reflective strip 117 can reflect the light emitted by the adjacent LED lamp bead 8 to the light guide plate 32, compensating for the light loss at the position of the damaged LED lamp bead 8 to a certain extent, reducing the brightness difference in the local damaged area, ensuring the display effect, and being able to meet the emergency use requirements. If the number of damaged LED lamp beads 8 is large and seriously affects the display effect of the touch liquid crystal display module, and the user cannot observe the display image, then it is necessary to stop using the touch liquid crystal display module, disassemble the touch liquid crystal display module and replace the damaged LED lamp bead 8. Since the LED lamp bead 8 is fixed and bonded by electronic glue, it can be replaced only by thermal disassembly method; When a local LED lamp bead 8 is damaged, the corresponding reflective strip 117 will automatically extend. At this time, the moving disk 113 below the reflective strip 117 will closely fit the top inner wall of the substrate 31, blocking the outlet 118 at this position and effectively preventing the air flow at this position from continuing to enter. Under the action of the same extrusion external force generated by the user operating the touch liquid crystal display module, the air flow will change its path and instead enter the inside of the substrate 31 through the outlets 118 at other positions. This change increases the fluidity of the gas around the LED lamp beads 8 at other positions to a certain extent, accelerates the heat dissipation, and then improves the heat dissipation efficiency of the LED lamp beads 8 at other positions; During the process of the hot air inside the substrate 31 discharging outward through the first heat dissipation holes 122 and the second heat dissipation holes 123, the hot air will flow through the surface of the gas pressure sensor 134. The gas pressure sensor 134 can accurately detect the magnitude of the air flow pressure of the hot air, and compare the detected data with a preset threshold in real time. Once the discharged air flow pressure value exceeds the set threshold, it means that the touch liquid crystal display module has received a relatively large contact impact force. At this time, the gas pressure sensor 134 will quickly convert the detected gas pressure value into an electrical signal and send it to the control main board 1. After receiving this electrical signal, the control main board 1 will immediately activate the alarm 135 to continuously emit an alarm sound for 1 second. This alarm prompt can effectively remind the user to timely reduce the contact external force of the finger on the touch liquid crystal display module, thereby avoiding damage to the touch liquid crystal display module caused by continuous relatively large external forces, extending the service life of the device, and ensuring the normal use of the device.

[0027] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A touch liquid crystal display module, comprising a control main board (1) and a frame (2) disposed on the upper surface of the control main board (1). Inside the frame (2), a backlight layer (3), a color filter (4), a liquid crystal display layer (5), a polarizing layer (6), and a touch layer (7) are sequentially arranged from bottom to top. The backlight layer (3) includes a substrate (31), a light guide plate (32), a diffusion sheet (33), and a reflector (34). The substrate (31), the light guide plate (32), the diffusion sheet (33), and the reflector (34) are fixedly connected in sequence from bottom to top. It is characterized in that, It further includes: A plurality of LED lamp beads (8), an installation groove (9) is formed on the upper surface of the substrate (31), and the plurality of LED lamp beads (8) are all fixedly arranged inside the installation groove (9) through electronic glue; A plurality of thermistor sheets (10), all fixedly arranged inside the installation groove (9), and the plurality of thermistor sheets (10) are respectively located on one side of the plurality of LED lamp beads (8), and the thermistor sheets (10) are used for detecting the ambient temperature of the LED lamp beads (8); A plurality of light reflecting mechanisms (11), all arranged inside the substrate (31), and the plurality of light reflecting mechanisms (11) can extend to the periphery of the LED lamp beads (8) for reflecting the light of adjacent LED lamp beads (8); A pressing heat dissipation mechanism (12), arranged on the substrate (31), and the pressing heat dissipation mechanism (12) is used for auxiliary heat dissipation inside the substrate (31); An air flow intensity warning mechanism (13), arranged on the side wall of the substrate (31), and the air flow intensity warning mechanism (13) is used in cooperation with the pressing heat dissipation mechanism (12); The LED lamp beads (8), thermistor sheets (10), light reflecting mechanisms (11), pressing heat dissipation mechanism (12) and air flow intensity warning mechanism (13) are all electrically connected to the control main board (1).

2. The touch liquid crystal display module according to claim 1, characterized in that The light reflecting mechanism (11) includes a fixed disk (111) fixedly arranged inside the substrate (31), two sides of the upper surface of the fixed disk (111) are both fixedly provided with telescopic rods (112), the upper ends of the two telescopic rods (112) are fixedly provided with the same moving disk (113), the rod walls of the two telescopic rods (112) are both sleeved with springs (114), and the two ends of the springs (114) are respectively fixedly connected to the fixed disk (111) and the moving disk (113), an electromagnet block (115) is fixedly arranged on the upper surface of the fixed disk (111), a permanent magnet block (116) is fixedly arranged on the lower surface of the moving disk (113), a plurality of uniformly distributed light reflecting strips (117) are fixedly arranged on the edge of the upper surface of the moving disk (113), and a plurality of uniformly distributed extending openings (118) are formed inside the installation groove (9) and located on the periphery of the LED lamp beads (8), and the light reflecting strips (117) correspond to the positions of the extending openings (118).

3. The touch liquid crystal display module according to claim 2, characterized in that, The light reflecting strip (117) is designed in an arc structure, a 45° light reflecting inclined surface is arranged on the outer side of the light reflecting strip (117), and the moving disk (113) can block the plurality of extending openings (118).

4. A touch liquid crystal display module according to claim 1, characterized in that, The pressing heat dissipation mechanism (12) includes a transparent pressing film (121) fixedly arranged at the opening of the installation groove (9), a plurality of uniformly distributed first heat dissipation holes (122) are formed on both sides of the substrate (31), and second heat dissipation holes (123) are formed on both sides of the outer frame (2) corresponding to the positions of the plurality of first heat dissipation holes (122).

5. A touch liquid crystal display module according to claim 4, characterized in that, The transparent pressing film (121) is made of a polycarbonate film, and the deformation of the transparent pressing film (121) can accelerate the gas flow inside the installation groove (9) and inside the substrate (31).

6. A touch liquid crystal display module according to claim 4, characterized in that, The air flow intensity warning mechanism (13) includes an external thread tube (131) threadedly arranged inside the second heat dissipation hole (123). An internal thread tube (132) is arranged inside the external thread tube (131), and connecting rods (133) are fixedly arranged between the two sides of the internal thread tube (132) and the inner wall on both sides of the external thread tube (131). A gas pressure sensor (134) is threadedly arranged inside the internal thread tube (132), and an alarm (135) is fixedly arranged at a corner of the upper surface of the control main board (1).

7. A touch liquid crystal display module according to claim 6, characterized in that, A dust-proof net (136) that blocks the gas pressure sensor (134) is fixedly arranged on the inner wall at one end of the external thread tube (131).

8. A touch liquid crystal display module according to claim 1, wherein, The outer frame (2) is composed of four aluminum alloy plates combined together.

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