CN118736980A - Ultra-thin touch-controlled liquid crystal display screen - Google Patents

Abstract

The invention discloses an ultra-thin touch liquid crystal display screen, which belongs to the technical field of display screen devices and solves the problems that the existing devices cannot quickly cool down the display screen, easily causing damage to the display screen, and are inconvenient to clean dust on the surface of the display screen. The invention comprises a touch display screen body, a heat dissipation protection component is installed on the touch display screen body, a support component is installed at the bottom of the heat dissipation protection component, a cleaning plate that can be moved up and down by a screw drive component is arranged on the front side of the touch display screen body, the temperature of the back side of the touch display screen body can be absorbed by a heat dissipation pipe, the air circulation rate inside the heat dissipation pipe and the plug-in pipe can be increased by a heat dissipation fan, so as to achieve the purpose of improving the heat dissipation effect of the back side of the touch display screen body, and the protection plate and the connecting plate can prevent the touch display screen body from being damaged by collision, and the arrangement of the screw drive component and the support component makes it easy to clean the dust on the front side of the touch display screen body.

Description

Ultra-thin touch-controlled liquid crystal display screen

Technical Field

The present invention relates to the technical field of display screen devices, in particular to an ultra-thin touch-controlled liquid crystal display screen.

Background Art

The touch LCD screen has one more signal line than ordinary monitors, that is, the signal line connecting the touch screen. The touch monitor is used in conjunction with a dedicated touch screen driver. A backlight source that illuminates the LCD panel is installed on the back of the display screen, and the backlight source will generate heat when in use.

After searching, the application with patent number 202110519581.X discloses a liquid crystal display screen, including a front clamping plate and a display screen, wherein a protruding block is fixedly connected to a position near the upper end of the front outer surface of the front clamping plate, and a slider is fixedly connected to a position near the rear end of the upper outer surface of the front clamping plate, and the slider slides inside a slide groove, and the slide groove is provided on the lower outer surface of the fixed block near the front end, and a rear clamping plate is fixedly connected to the lower outer surface of the fixed block near the rear end, and a first threaded hole is provided inside the front clamping plate near the upper end of the other side, and a threaded rotating rod is connected to the internal thread of the first threaded hole;

Although the LCD screen can be clamped and fixed by the front and rear clamping devices, and the slidable front clamping device can be used for screens of different thicknesses, and the protrusions and grooves are engaged to increase stability during transportation and reduce the chance of damage due to tipping, the LCD screen cannot be cooled quickly when used for a long time, which easily causes damage to the screen, and it is not convenient to clean dust adsorbed on the surface of the display screen.

Therefore, we propose an ultra-thin touch-sensitive LCD display.

Summary of the invention

In view of the deficiencies of the prior art, the present invention provides an ultra-thin touch-controlled liquid crystal display screen, which solves the problems that the prior art devices cannot quickly cool the display screen, easily causing damage to the display screen, and are inconvenient to clean dust on the surface of the display screen.

To achieve the above objectives, the present invention is implemented through the following technical solutions: an ultra-thin touch liquid crystal display screen, comprising a touch display screen body, a heat dissipation protection component is installed on the touch display screen body, a support component is installed at the bottom of the heat dissipation protection component, and a cleaning plate that can be moved up and down by a screw drive component is arranged on the front side of the touch display screen body;

The heat dissipation protection assembly includes a protection plate, a heat dissipation fan, a heat dissipation pipe, a plug-in pipe and a connecting plate. Two protection plates are provided. The sides of the two protection plates are provided with grooves with the same specifications as the left and right sides of the touch display screen body. The left and right sides of the touch display screen body are respectively clamped in the grooves at adjacent positions. The sides of the two protection plates are also provided with slide grooves, slots and ventilation slots. The positions of the ventilation slots and the slots are opposite and connected to each other. The side of the heat dissipation pipe is in contact with the back of the touch display screen body. Both ends of the heat dissipation pipe are fixedly installed with plug-in pipes connected thereto. One end of the plug-in pipe away from the heat dissipation pipe is movably sleeved in the slot. The specifications of the plug-in pipe are the same as those of the slot. A heat dissipation fan is fixedly installed on the inner wall of the ventilation slot, and the blowing directions of the heat dissipation fans on the protection plates on both sides are opposite. Connecting plates are installed on the top and bottom surfaces of the protection plates by bolts.

Preferably, the groove, slide groove and slot are located on the same side, the slide groove is located on the side close to the front of the touch display screen body, the slot is located on the side close to the back of the touch display screen body, and the ventilation slot is located on the side adjacent to the slot, and the slot and ventilation slot are both provided with seven distributed in a linear array, wherein the cooling fan in the ventilation slot on one side blows air into the interior of the ventilation slot, and then the wind enters the interior of the plug-in tube and the heat dissipation pipe through the slot, and then is discharged through the slot on the other side.

Preferably, the cross-sections of the heat dissipation pipe and the plug-in tube are both rectangular, and the heat dissipation pipe and the plug-in tube are both made of pure copper, wherein pure copper has extremely strong thermal conductivity, and the heat on the back of the touch display screen body can be absorbed by the heat dissipation pipe and then quickly dissipated into the air.

Preferably, the cooling fan is connected to the power supply through a wire, and the cooling fan on one side of the protective plate blows air into the inside of the ventilation slot, and the cooling fan on the other side of the protective plate blows air out of the ventilation slot, thereby increasing the air circulation rate inside the heat pipe and then increasing the heat dissipation rate of the heat pipe.

Preferably, a support block is fixedly installed in the middle of one side of the connecting plate close to the touch display screen body, and a card slot is provided on the side of the support block close to the touch display screen body, and the upper and lower sides of the touch display screen body are card-connected inside the card slot, wherein the card slot is convenient for limiting the upper and lower sides of the touch display screen body and can support the touch display screen body.

Preferably, the cleaning plate is in a "U" shape, one side of the middle part of the cleaning plate contacts the surface of the touch display screen body, and a cleaning sponge is bonded to the side of the cleaning plate in contact with the touch display screen body, wherein the cleaning plate is driven to translate along the surface of the touch display screen body by a screw drive assembly, and then the cleaning sponge can wipe off the surface of the touch display screen body.

Preferably, the screw drive assembly includes a micro motor, a threaded rod and a slider, the micro motor is connected to a power source via a wire, the micro motor is fixedly mounted on the top surface of the inner wall of the slide groove, the output end of the micro motor is fixedly connected to the threaded rod, the bottom end of the threaded rod is rotatably mounted on the bottom surface of the slide groove via a bearing ring, the outer surface of the threaded rod is threadedly fitted with a slider, wherein the threaded rod is driven to rotate by the micro motor.

Preferably, the slider is slidably mounted inside the slide groove, and both ends of the cleaning plate are fixedly mounted on the side walls of the slider, wherein when the threaded rod rotates, the slider will translate along the inner wall of the slide groove, thereby driving the cleaning plate to move synchronously.

Preferably, the supporting assembly comprises a hydraulic rod, a turntable and a base plate, a mounting groove is provided in the middle of the top surface of the base plate, the turntable is rotatably mounted inside the mounting groove through a bearing ring, a damping pad is bonded to the bottom surface of the turntable, the damping pad is in contact with the bottom surface of the mounting groove, a hydraulic rod is fixedly mounted on the top surface of the turntable, the top end of the hydraulic rod is fixedly mounted on the bottom surface of a connecting plate located on the bottom side of the touch display screen body, wherein, by arranging the hydraulic rod and the connecting plate, the height of the touch display screen body can be adjusted by pushing the connecting plate up and down through the hydraulic rod, and by arranging the turntable and the mounting groove, the turntable can be rotated inside the mounting groove, and the turntable can be limited to a specific angle after rotation through the damping pad, and then the angle of the touch display screen body can be adjusted.

The present invention provides an ultra-thin touch-controlled liquid crystal display screen having the following beneficial effects:

1. The ultra-thin touch LCD screen can absorb the temperature of the back of the touch screen body through the heat pipe, and the heat dissipation fan can increase the air circulation rate inside the heat pipe and the plug tube, thereby increasing the heat dissipation efficiency of the heat pipe and the plug tube, and then cool down the back of the touch screen body, and quickly dissipate the heat of the back of the touch screen body, thereby achieving the purpose of improving the heat dissipation effect of the back of the touch screen body, which is beneficial to protect the touch screen body and increase the service life of the touch screen body. The protective plate and the connecting plate can protect the surroundings of the touch screen body to prevent the touch screen body from being damaged by collision, thereby solving the problem that the existing device cannot quickly cool down the screen and easily causes damage to the screen;

2. The ultra-thin touch LCD screen is convenient for cleaning dust on the front side of the touch screen body through the arrangement of the screw drive assembly and the support assembly. The micro motor drives the threaded rod to rotate, and then drives the slider and the cleaning plate to translate along the inner wall of the slide groove, and drives the cleaning plate to translate along the surface of the touch screen body. Then, the cleaning sponge on the side wall of the cleaning plate can wipe off the dust attached to the surface of the touch screen body, thereby achieving the purpose of facilitating the cleaning of dust on the front side of the touch screen body, and solving the problem that the existing device is inconvenient to clean the dust on the surface of the display screen;

3. The ultra-thin touch LCD screen is convenient for adjusting the height and angle of the touch screen body through the arrangement of the hydraulic rod, the turntable and the bottom plate. The height of the touch screen body can be adjusted by pushing the connecting plate up and down through the hydraulic rod. The turntable and the mounting groove can be arranged so that the turntable can rotate inside the mounting groove. The damping pad can limit the turntable to a specific angle after rotation, and then the angle of the touch screen body can be adjusted.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a schematic diagram of the structure of the present invention;

FIG2 is a schematic side view of the structure of the present invention;

FIG3 is a schematic diagram of the structure of the protective plate of the present invention;

FIG4 is a schematic diagram of the heat dissipation pipe structure of the present invention;

FIG5 is a schematic diagram of the structure of a screw drive assembly of the present invention;

FIG6 is a schematic diagram of the structure of the connecting plate of the present invention;

FIG. 7 is a schematic diagram of the disassembled structure of the support assembly of the present invention.

In the figure: 1. touch screen body; 2. heat dissipation protection assembly; 21. protection plate; 22. slot; 23. slide; 24. ventilation slot; 25. cooling fan; 26. heat dissipation pipe; 27. plug-in tube; 28. connecting plate; 29. support block; 210. card slot; 211. groove; 3. cleaning plate; 4. screw drive assembly; 41. micro motor; 42. threaded rod; 43. slider; 5. support assembly; 51. hydraulic rod; 52. turntable; 53. bottom plate; 54. installation slot.

DETAILED DESCRIPTION

The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

Embodiment 1:

As shown in Figure 1-7: it includes a touch screen body 1, a heat dissipation protection component 2 is installed on the touch screen body 1, a support component 5 is installed at the bottom of the heat dissipation protection component 2, a cleaning plate 3 that can be moved up and down by a screw drive component 4 is arranged on the front side of the touch screen body 1, the heat dissipation protection component 2 includes a protection plate 21, a heat dissipation fan 25, a heat dissipation pipe 26, a plug-in pipe 27 and a connecting plate 28, two protection plates 21 are arranged, and the sides of the two protection plates 21 are provided with grooves 211 with the same specifications as the left and right sides of the touch screen body 1, and the left and right sides of the touch screen body 1 are respectively clamped in the grooves 211 adjacent to them, and the sides of the two protection plates 21 are also provided with slide grooves 23, slots 22 and ventilation The ventilation slot 24 is opposite to the slot 22 and is connected to each other. The side of the heat dissipation pipe 26 is in contact with the back of the touch display screen body 1. The two ends of the heat dissipation pipe 26 are fixedly installed with plug-in pipes 27 connected thereto. The end of the plug-in pipe 27 away from the heat dissipation pipe 26 is movably sleeved inside the slot 22. The specification of the plug-in pipe 27 is the same as that of the slot 22. A cooling fan 25 is fixedly installed on the inner wall of the ventilation slot 24. The blowing directions of the cooling fans 25 on the protective plates 21 on both sides are opposite. Connecting plates 28 are installed on the top and bottom surfaces of the protective plates 21 by bolts. The groove 211, the slide groove 23 and the slot 22 are located on the same side. The slide groove 23 is located on the side close to the front of the touch display screen body 1, and the slot 22 is located close to the front of the touch display screen body 1. On one side of the back of the touch display body 1, the ventilation slot 24 is located on the side adjacent to the slot 22, and the slot 22 and the ventilation slot 24 are both provided with seven distributed in a linear array. The cross-sections of the heat dissipation pipe 26 and the plug-in pipe 27 are both rectangular, and the heat dissipation pipe 26 and the plug-in pipe 27 are both made of pure copper. The cooling fan 25 is connected to the power supply through a wire, and the cooling fan 25 on the protective plate 21 on one side blows air to the inside of the ventilation slot 24, and the cooling fan 25 on the protective plate 21 on the other side blows air to the outside of the ventilation slot 24. A support block 29 is fixedly installed in the middle of one side of the connecting plate 28 close to the touch display body 1. A card slot 210 is opened on the side of the support block 29 close to the touch display body 1, and the upper and lower sides of the touch display body 1 are card-connected to The heat pipe 26 can absorb the temperature of the back of the touch screen body 1 inside the card slot 210, and the heat dissipation fan 25 can increase the air circulation rate inside the heat pipe 26 and the plug tube 27, thereby increasing the heat dissipation efficiency of the heat pipe 26 and the plug tube 27, thereby cooling the back of the touch screen body 1, and quickly dissipating the heat from the back of the touch screen body 1, thereby achieving the purpose of improving the heat dissipation effect of the back of the touch screen body 1, which is beneficial to protecting the touch screen body 1 and increasing the service life of the touch screen body 1. The protective plate 21 and the connecting plate 28 can protect the surroundings of the touch screen body 1 to prevent the touch screen body 1 from being damaged by collision.

Embodiment 2:

As shown in Figures 1, 3 and 5: the cleaning plate 3 is "U"-shaped, one side of the middle of the cleaning plate 3 contacts the surface of the touch display screen body 1, and a cleaning sponge is bonded to the side of the cleaning plate 3 that contacts the touch display screen body 1. The screw drive assembly 4 includes a micro motor 41, a threaded rod 42 and a slider 43. The micro motor 41 is connected to the power supply through a wire, and the micro motor 41 is fixedly installed on the top surface of the inner wall of the slide groove 23. The output end of the micro motor 41 is fixedly connected to the threaded rod 42, and the bottom end of the threaded rod 42 is rotatably installed on the bottom surface of the slide groove 23 through a bearing ring. The outer surface of the threaded rod 42 is threadedly sleeved with a slider 4 3, the slider 43 is slidably mounted inside the slide groove 23, and the two ends of the cleaning plate 3 are fixedly mounted on the side walls of the slider 43. Through the arrangement of the screw drive assembly 4 and the support assembly 5, it is convenient to clean the dust on the front side of the touch screen body 1. The micro motor 41 drives the threaded rod 42 to rotate, and then drives the slider 43 and the cleaning plate 3 to translate along the inner wall of the slide groove 23, and drives the cleaning plate 3 to translate along the surface of the touch screen body 1. Then, the cleaning sponge on the side wall of the cleaning plate 3 can wipe off the surface of the touch screen body 1, thereby achieving the purpose of facilitating the cleaning of the dust on the front side of the touch screen body 1;

Embodiment 3:

As shown in Figures 1, 2 and 7: the support assembly 5 includes a hydraulic rod 51, a turntable 52 and a base plate 53. A mounting groove 54 is provided in the middle of the top surface of the base plate 53. The turntable 52 is rotatably mounted in the mounting groove 54 through a bearing ring. A damping pad is bonded to the bottom surface of the turntable 52, and the damping pad contacts the bottom surface of the mounting groove 54. A hydraulic rod 51 is fixedly mounted on the top surface of the turntable 52. The top end of the hydraulic rod 51 is fixedly mounted on the bottom surface of the connecting plate 28 located at the bottom side of the touch display screen body 1. The arrangement of the hydraulic rod 51, the turntable 52 and the base plate 53 facilitates the adjustment of the height and angle of the touch display screen body 1. The height of the touch display screen body 1 can be adjusted by pushing the connecting plate 28 up and down by the hydraulic rod 51. The arrangement of the turntable 52 and the mounting groove 54 allows the turntable 52 to rotate inside the mounting groove 54. The turntable 52 can be restricted to a specific angle after rotation by the damping pad, and then the angle of the touch display screen body 1 can be adjusted.

Working principle and use process of the present invention: When assembling the ultra-thin touch-control liquid crystal display screen, first align the groove 211 on the protective plate 21 on one side with one side of the touch-control display screen body 1, then snap the protective plate 21 on one side to one side of the touch-control display screen body 1, then plug the plug-in tube 27 at one end of the heat dissipation tube 26 into the slot 22, then snap the protective plate 21 on the other side to the other side of the touch-control display screen body 1 and keep the slot 22 and the plug-in tube 27 on the other side of the heat dissipation tube 26 snap-fitted, then install the connecting plate 28 on the top and bottom surfaces of the protective plate 21 by bolts;

When the touch screen body 1 is in use, heat is generated on the back side thereof. The heat dissipation pipe 26 is in contact with the back side of the touch screen body 1, so the heat dissipation pipe 26 can absorb the heat on the back side of the touch screen body 1 and dissipate it into the air. The heat dissipation fan 25 on one side blows air into the interior of the ventilation slot 24, and then the gas enters the interior of the plug-in pipe 27 and the heat dissipation pipe 26 through the slot 22, and then is discharged into the interior of the slot 22 on the other side through the plug-in pipe 27 on the other side of the heat dissipation pipe 26. The heat dissipation fan 25 on the other side exhausts air to the outside of the ventilation slot 24, which can increase the air circulation inside the ventilation slot 24, and then increase the air circulation rate inside the heat dissipation pipe 26 and the plug-in pipe 27, and then increase the heat dissipation efficiency of the heat dissipation pipe 26 and the plug-in pipe 27, and then cool the back side of the touch screen body 1. The protective plate 21 and the connecting plate 28 can protect the surroundings of the touch screen body 1 to prevent the touch screen body 1 from being damaged by collision.

When dust is attached to the front side of the touch screen body 1, the micro motor 41 is started to drive the threaded rod 42 to rotate, and then the slider 43 and the cleaning plate 3 are driven to translate along the inner wall of the slide groove 23, and the cleaning plate 3 is driven to translate along the surface of the touch screen body 1, and then the cleaning sponge on the side wall of the cleaning plate 3 can wipe off the dust attached to the surface of the touch screen body 1;

The height of the touch screen body 1 can be adjusted by pushing the connecting plate 28 up and down through the hydraulic rod 51. The turntable 52 and the mounting groove 54 can be set to rotate inside the mounting groove 54. The turntable 52 can be limited to a specific angle after rotation through the damping pad, and then the angle of the touch screen body 1 can be adjusted.

The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

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

Claims (9)

1. The utility model provides an ultra-thin touch-control liquid crystal display, includes touch-control display body (1), its characterized in that: the touch display screen comprises a touch display screen body (1), wherein a heat dissipation protection assembly (2) is arranged on the touch display screen body (1), a support assembly (5) is arranged at the bottom of the heat dissipation protection assembly (2), and a cleaning plate (3) which is driven by a screw rod driving assembly (4) to move up and down is arranged on the front side of the touch display screen body (1);

The heat radiation protection component (2) comprises protection plates (21), heat radiation fans (25), heat radiation pipes (26), plug tubes (27) and connecting plates (28), wherein the two protection plates (21) are arranged, grooves (211) with the same specifications as those of the left side and the right side of a touch display screen body (1) are respectively formed in the left side and the right side of the touch display screen body (1), the left side and the right side of the touch display screen body (1) are respectively clamped in the grooves (211) at the adjacent positions, the two side surfaces of the protection plates (21) are further provided with sliding grooves (23), inserting grooves (22) and ventilation grooves (24), the ventilation grooves (24) are opposite to the positions of the inserting grooves (22) and are mutually communicated, the side surfaces of the heat radiation pipes (26) are attached to the back surfaces of the touch display screen body (1), the two ends of the heat radiation pipes (26) are fixedly provided with plug tubes (27) which are communicated with the touch display screen body, one ends of the plug tubes (27) are far away from the inserting grooves (22) are movably sleeved in the inner parts of the inserting grooves (22), the specifications of the plug tubes (27) are identical to those of the inserting grooves (22), the heat radiation grooves (25) are fixedly provided with the heat radiation grooves (25) and the heat radiation grooves (25) respectively, the top surface and the bottom surface of the protection plate (21) are provided with connecting plates (28) through bolts.

2. The ultra-thin touch liquid crystal display of claim 1, wherein: the novel touch screen is characterized in that the groove (211), the sliding groove (23) and the slot (22) are located on the same side, the sliding groove (23) is located on the side close to the front face of the touch screen body (1), the slot (22) is located on the side close to the back face of the touch screen body (1), the ventilation slot (24) is located on the side adjacent to the slot (22), and the slot (22) and the ventilation slot (24) are provided with seven distributed in a linear array.

3. The ultra-thin touch liquid crystal display of claim 1, wherein: the cross sections of the radiating pipe (26) and the plug pipe (27) are rectangular, and the radiating pipe (26) and the plug pipe (27) are made of pure copper.

4. The ultra-thin touch liquid crystal display of claim 1, wherein: the radiating fans (25) are communicated with a power supply through wires, the radiating fans (25) on one side protection plate (21) blow air to the inside of the ventilation groove (24), and the radiating fans (25) on the other side protection plate (21) blow air to the outside of the ventilation groove (24).

5. The ultra-thin touch liquid crystal display of claim 1, wherein: the middle part that connecting plate (28) is close to touch-control display screen body (1) one side fixed mounting has supporting shoe (29), draw-in groove (210) have been seted up to one side that supporting shoe (29) are close to touch-control display screen body (1), the inside at draw-in groove (210) of the upper and lower both sides joint of touch-control display screen body (1).

6. The ultra-thin touch liquid crystal display of claim 1, wherein: the cleaning plate (3) is U-shaped, one side in the middle of the cleaning plate (3) is in contact with the surface of the touch display screen body (1), and one side, in contact with the touch display screen body (1), of the cleaning plate (3) is adhered with cleaning sponge.

7. The ultra-thin touch liquid crystal display of claim 1, wherein: the screw rod driving assembly (4) comprises a micro motor (41), a threaded rod (42) and a sliding block (43), wherein the micro motor (41) is communicated with a power supply through a wire, the micro motor (41) is fixedly installed on the top surface of the inner wall of the sliding groove (23), the output end of the micro motor (41) is fixedly connected with the threaded rod (42), the bottom end of the threaded rod (42) is rotatably installed on the bottom surface of the sliding groove (23) through a bearing ring, and the sliding block (43) is sleeved on the outer surface of the threaded rod (42) in a threaded mode.

8. The ultra-thin touch liquid crystal display of claim 7, wherein: the sliding block (43) is sleeved in the sliding groove (23) in a sliding mode, and two ends of the cleaning plate (3) are fixedly arranged on the side wall of the sliding block (43).

9. The ultra-thin touch liquid crystal display of claim 1, wherein: the supporting component (5) comprises a hydraulic rod (51), a rotary table (52) and a bottom plate (53), wherein a mounting groove (54) is formed in the middle of the top surface of the bottom plate (53), the rotary table (52) is rotationally sleeved in the mounting groove (54) through a bearing ring, a damping pad is adhered to the bottom surface of the rotary table (52), the damping pad is in contact with the bottom surface of the mounting groove (54), the hydraulic rod (51) is fixedly mounted on the top surface of the rotary table (52), and the top end of the hydraulic rod (51) is fixedly mounted on the bottom surface of a connecting plate (28) positioned on the bottom side of the touch display screen body (1).