Touch display screen

Abstract

The utility model relates to the technical field of man-machine interaction, and provides a touch display screen, which comprises a display screen and a signal transceiving device, and the display screen comprises a first side surface and a second side surface which are oppositely arranged; the signal transceiving device comprises a shell, a signal transceiver, an optical fiber unit and a light transmitting piece, the shell comprises a first optical channel and a second optical channel, and the first optical channel is arranged on the first side face; the second light channel is arranged on the front face of the display screen and communicated with the first light channel, and a light outlet of the second light channel faces the second side face. The signal transceiver is arranged in the first optical channel; the optical fiber units penetrate through the first optical channel and the second optical channel, the first end of each optical fiber unit is connected with the signal transceiver, the second ends of the optical fiber units are arranged in a stepped manner and limit a light-emitting inclined plane, and the light-emitting inclined plane is arranged at a light outlet of the second optical channel; the light-transmitting piece covers the light-emitting inclined face, and the shape of the light-transmitting piece is matched with the shape of the light-emitting inclined face. The touch display screen provided by the utility model can solve the problem of refraction or scattering caused by a lens effect formed by liquid drops on the outer surface of the light-transmitting piece.

Description

Technical Field

[0001] This utility model relates to the field of human-computer interaction technology, and in particular to a touch display screen. Background Technology

[0002] Infrared touch technology, as a human-computer interaction method, is widely used in education, commercial displays, and outdoor equipment due to its high reliability and adaptability to large screens. Traditional infrared touchscreens typically place the infrared emitter and receiver directly on the edge surface of the display screen, guiding the infrared light to form a cross-grid through a light guide structure. However, the structure of the light guide requires the emitting surface to be designed perpendicular to the display screen. In outdoor or humid environments, this structure easily leads to droplets condensing on the emitting surface. Due to surface tension, these droplets form a lens-like structure, which refracts or scatters the infrared light, interfering with the direction of light propagation and causing a decrease in touch positioning accuracy. This severely limits the applicability of the device. Utility Model Content

[0003] This utility model provides a touch display screen to solve the defect of droplet interference with light path propagation in the prior art. The second end of the optical fiber unit adopts a stepped arrangement to form a light-emitting slope, and the light-transmitting element is set with a corresponding slope. When a droplet falls on the light-transmitting element, the tilt setting of the light-transmitting element will prevent the liquid from adhering to the light-transmitting element, thereby solving the problem of refraction or scattering caused by the lens effect formed by droplets on the outer surface of the light-transmitting element in outdoor environment.

[0004] The touch display screen provided by this utility model includes:

[0005] The display screen includes:

[0006] First perspective;

[0007] The second side is disposed opposite to the first side;

[0008] Signal transceiver device, including:

[0009] The housing includes:

[0010] The first optical channel is located on the first side.

[0011] The second light channel is located on the front of the display screen and is connected to the first light channel. The light outlet of the second light channel faces the second side.

[0012] A signal transceiver is located within the first optical channel;

[0013] Multiple optical fiber units are disposed in the first optical channel and the second optical channel. The first end of each optical fiber unit is connected to the signal transceiver. The second ends of the multiple optical fiber units are arranged in a stepped manner and restrict the light-emitting inclined surface. The light-emitting inclined surface is located at the light-emitting port of the second optical channel.

[0014] A light-transmitting element is disposed on the light-emitting inclined surface, and the shape of the light-transmitting element matches the shape of the light-emitting inclined surface.

[0015] According to the touch display screen provided by this utility model, the surface of the light-transmitting element facing the second side is provided with a plurality of stepped units, the plurality of stepped units are connected in sequence along the light-emitting inclined surface, and the shape of the stepped unit matches the shape of the optical fiber unit.

[0016] According to the touch display screen provided by this utility model, the light-transmitting element includes a resin light-transmitting element.

[0017] According to the touch display screen provided by this utility model, the resin light-transmitting element includes:

[0018] A first light-transmitting body is wrapped around the outside of the plurality of optical fiber units, and the first optical channel is wrapped around the outside of the first light-transmitting body;

[0019] The second light-transmitting body is wrapped around the outside of the plurality of optical fiber units and connected to the first light-transmitting body, and the second optical channel is wrapped around the outside of the second light-transmitting body.

[0020] According to the touch display screen provided by this utility model, the light-emitting inclined surface is set at a preset angle with the front of the display screen, wherein the preset angle is α, and the value of α is in the range of 135°≤α≤150°.

[0021] According to the touch display screen provided by this utility model, the surface of the light-transmitting element is provided with a polarizing grid, which is used to filter stray light.

[0022] According to the touch display screen provided by this utility model, the inner walls of the first light channel and the second light channel are formed with polarization layers.

[0023] According to the touch display screen provided by this utility model, a light-shielding layer is formed on the outer surface of the first light channel and the second light channel.

[0024] The touch display screen provided by this utility model also includes a control component, which is electrically connected to the signal transceiver and is used to monitor the received signal-to-noise ratio through the signal transceiver.

[0025] When the received signal-to-noise ratio is lower than the preset signal-to-noise ratio, the control component is used to increase the transmit power or receive sensitivity of the signal transceiver device.

[0026] The touch display screen provided by this utility model also includes a temperature sensor, which is electrically connected to the control component, and the control component is used to monitor the ambient temperature through the temperature sensor.

[0027] When the ambient temperature is higher than the first preset temperature, the control component is used to increase the transmission power or reception sensitivity of the signal transceiver.

[0028] When the ambient temperature is lower than the second preset temperature, the control component is used to increase the transmission power or reception sensitivity of the signal transceiver device;

[0029] The first preset temperature is greater than the second preset temperature.

[0030] In the touch display screen provided by this utility model, by designing the shell as an "L"-shaped structure and setting up a first optical channel and a second optical channel that are interconnected, the optical signal of the signal transceiver can be redirected and transmitted to the light outlet of the second optical channel through the optical fiber unit. Furthermore, the second end of the optical fiber unit adopts a stepped arrangement to form a light-emitting slope, and the light-transmitting element is set as a corresponding slope. When a droplet falls on the light-transmitting element, the tilt setting of the light-transmitting element will prevent the liquid from adhering to the light-transmitting element, thereby solving the problem of refraction or scattering caused by the lens effect formed by droplets on the outer surface of the light-transmitting element in outdoor environment.

[0031] Compared to existing technologies, the arrangement of the optical fiber unit, the first optical channel, and the second optical channel in this invention enables the signal light to have a steering function during transmission. This allows the transceiver to be placed on the side of the display screen, thus solving the problem of gaps between the infrared lamp and the display screen due to the thickness of the lamp itself, thereby reducing the risk of rainwater leakage caused by these gaps.

[0032] Secondly, the fiber optic unit configuration allows the integrated light guide to be broken down into multiple micro-unit light guides. These micro-units are arranged in a stepped pattern, creating a sloping light-emitting surface. Each micro-unit plane is perpendicular to the display screen, breaking the limitation that the emitting surface of an existing integrated light guide structure must be designed perpendicular to the display screen. The synergistic effect of the emitting slope and the sloping surface of the light-transmitting element not only ensures that the light signal propagates parallel to the front of the display screen as it passes through the light-transmitting element and fiber bundle, but also acts as a water guide through the sloping structure, thus solving the problem of refraction or scattering caused by droplets forming a lens effect on the outer surface of the light-transmitting element. This design, combining light path guidance with surface protection, effectively improves the anti-interference capability of the touch display screen in humid outdoor environments while maintaining the accuracy of the infrared mesh coverage. This ensures that the reliability of touch positioning is no longer affected by droplets, thereby expanding the versatility of the touch display screen. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a partial structural schematic diagram of the touch display screen provided in an embodiment of the present utility model.

[0035] Figure 2 This is a partial schematic diagram of the stepped unit of the touch display screen provided in this embodiment of the utility model.

[0036] Figure label:

[0037] 100: Display screen; 110: First side; 120: Second side; 200: Signal transceiver; 210: Housing; 211: First optical channel; 212: Second optical channel; 220: Signal transceiver; 230: Fiber optic unit; 231: Light-emitting slope; 240: Light-transmitting element; 241: Stepped unit; 242: First light-transmitting body; 243: Second light-transmitting body. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0039] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0040] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0041] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the embodiments of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0042] Figure 1 This is a partial structural schematic diagram of the touch display screen provided in an embodiment of the present utility model.

[0043] See Figure 1 In an optional embodiment of this utility model, the touch display screen includes a display screen 100 and a signal transceiver device 200; the display screen 100 includes a first side 110 and a second side 120 arranged opposite to each other. It should be noted that the first side 110 and the second side 120 here need to be interpreted in a broad sense; for example, when the shape of the display screen 100 is rectangular, then the display screen 100 has two sets of opposite first side 110 and second side 120, that is, the upper side and the lower side are one set of first side 110 and second side 120, and the left side and the right side are the second set of first side 110 and second side 120.

[0044] When the display screen 100 is hexagonal or octagonal, the same principle applies. In some special cases, such as when the display screen 100 is circular, triangular, or other odd-numbered polygons, taking a circular shape as an example, the display screen 100 can be divided into a first side 110 and a second side 120 by one diameter. In other words, in these special cases, the first side 110 and the second side 120 can be obtained by adaptively dividing the display screen 100 according to its shape, so that the signal transceiver device 200 can form an infrared mesh coverage surface on the surface of the display screen 100. The specific structure of the infrared mesh coverage surface can be referred to the existing technology, and will not be described in detail here.

[0045] The signal transceiver 200 includes a housing 210, a signal transceiver 220, an optical fiber bundle, and a light-transmitting element 240. The housing 210 includes an integrally formed first optical channel 211 and a second optical channel 212, which are enclosed by the housing 210. In other alternative embodiments, the housing 210 may also be obtained by splicing two shell-like structures with cavities. The first optical channel 211 and the second optical channel 212 are arranged vertically. The first optical channel 211 includes an output port and an input port, and the second optical channel 212 also includes an output port and an input port. The output port of the first optical channel 211 is connected to the input port of the second optical channel 212.

[0046] The first light channel 211 is disposed on the first side 110 of the display screen 100, and the housing 210 containing the first light channel 211 is fitted to the first side 110; the second light channel 212 is disposed on the front of the display screen 100, and the housing 210 containing the second light channel 212 is fitted to the front of the display screen 100, and the light outlet of the second light channel 212 is facing the second side 120 of the display screen 100; from another angle, the housing 210 has an "L" shaped structure, including the first light channel 211 and the second light channel 212 set at the corner, and the "L" shaped structure is semi-enclosed at the side edge of the display screen 100.

[0047] The transceiver 220 can be selected as a signal transmitter or a signal receiver. The specific number and arrangement of the signal transmitters or receivers can be adapted to the infrared mesh coverage to be constructed. For example, multiple signal transmitters or receivers can be selected and arranged alternately on the first side 110 and the second side 120. In this way, a mesh-like infrared mesh coverage can be formed on the front of the display screen 100. There are many specific settings, which will not be listed in this article.

[0048] The transceiver 220 is located at the light inlet of the first channel, and the interaction end of the transceiver 220 faces the light outlet of the first optical channel 211. It should be noted that when the transceiver 220 is configured as a signal transmitter, the interaction end here is the transmitting end of the signal transmitter; when the transceiver 220 is configured as a signal receiver, the interaction end here is the receiving end of the signal receiver.

[0049] The fiber bundle includes multiple fiber units 230. The fiber bundle passes through the first optical channel 211 and the second optical channel 212. The first end of the fiber bundle is connected to the signal transceiver 200. At the second end of the fiber bundle, the multiple fiber units 230 are arranged in a stepped structure, thereby limiting the light-emitting slope 231. In other words, the second ends of the multiple fiber units 230 are arranged along the preset light-emitting slope 231. There are various ways to form the light-emitting slope 231, such as directly cutting the fiber bundle at an angle, or arranging the multiple fiber units 230 in a decreasing manner. The light-emitting slope 231 formed by the multiple fiber units 230 is set at the light-emitting port of the second optical channel 212. Optionally, the outer shell 210 at the light-emitting port of the second optical channel 212 can be configured as a slope that matches the light-emitting slope 231. Specifically, it can be adapted.

[0050] A light-transmitting element 240 is disposed at the light-emitting port of the second optical channel 212 and covers the light-emitting inclined surface 231. That is, the light-transmitting element 240 and the outer shell 210 can form a sealed space to protect the signal transceiver 220 and the fiber bundle. A coupling part is provided on the side of the light-transmitting element 240 facing the fiber bundle. The coupling part includes multiple coupling units. The shape of the multiple coupling units matches the shape of the second end of the multiple fiber units 230. Specifically, the multiple coupling units can be multiple stepped surfaces arranged along the light-emitting inclined surface 231, and the second ends of the multiple fiber units 230 abut against these stepped surfaces. Alternatively, the multiple coupling units include multiple micro-grooves. These micro-grooves are disposed along the direction of the light-emitting inclined surface 231 on the side of the light-transmitting element 240 facing the fiber bundle. During assembly, the second end of each fiber unit 230 can abut against the corresponding micro-groove.

[0051] It is understood that in the touch display screen provided by this utility model embodiment, by designing the housing 210 as an "L"-shaped structure and setting the first optical channel 211 and the second optical channel 212 that are interconnected, the optical signal of the transceiver 220 can be redirected and transmitted to the light outlet of the second optical channel 212 via the optical fiber bundle; furthermore, the second end of the optical fiber bundle adopts a stepped arrangement to form a light-emitting inclined surface 231, and the light-transmitting element 240 is set as a corresponding inclined surface. When a droplet falls on the light-transmitting element 240, the inclined setting of the light-transmitting element 240 will cause the liquid to be unable to adhere to the light-transmitting element 240, thereby solving the problem of refraction or scattering caused by the lens effect formed by the droplet on the outer surface of the light-transmitting element 240 in outdoor environment.

[0052] Compared to existing technologies, in this embodiment of the invention, the arrangement of the optical fiber bundle, the first optical channel 211, and the second optical channel 212 enables the signal light to have a steering function during transmission. Thus, when setting the signal transceiver 220, it can be placed on the side of the display screen 100. This solves the problem in the prior art where the infrared lamp has a gap with the display screen 100 due to its own thickness, thereby reducing the risk of rainwater leakage due to this gap. Secondly, the fiber bundle arrangement allows the integrated light guide to be broken down into multiple micro-unit light guides. These multiple fiber units 230 are arranged in a stepped configuration, and the planes of these micro-units constrain the inclined light-emitting surface 231. Each micro-unit plane is perpendicular to the display screen 100. This breaks the limitation that the emitting surface of existing integrated light guide structures must be designed to be perpendicular to the display screen 100. The synergistic effect of the inclined surface 231 and the inclined surface of the light-transmitting element 240 not only ensures that the light signal propagates parallel to the front of the display screen 100 when passing through the light-transmitting element 240 and the fiber bundle, but also acts as a water guide through the inclined structure, thus solving the problem of refraction or scattering caused by the lens effect of droplets on the outer surface of the light-transmitting element 240. This design, which combines light path guidance with surface protection, effectively improves the anti-interference capability of the touch display screen in outdoor humid environments while maintaining the accuracy of infrared mesh coverage. This ensures that the reliability of touch positioning is no longer affected by droplets, thereby expanding the versatility of the touch display screen.

[0053] Continue reading Figure 1 In an optional embodiment of this utility model, the light-emitting inclined surface 231 is set at a preset angle with the front surface of the display screen 100, wherein the preset angle is α, and the value of α is in the range of 135°≤α≤150°; for example, α can be selected as 135°, 140°, 145° or 150°.

[0054] It is understood that the touch display screen provided in this embodiment of the present invention, by limiting the included angle between the light-emitting inclined surface 231 and the display screen 100 within the aforementioned range, allows the opening of the included angle between the outer surface of the light-transmitting element 240 and the display screen 100 to face away from the display screen 100; when the signal transceiver device 200 is disposed below the display screen 100, the outer surface of the light-transmitting element 240 not only does not restrict the free fall of the droplet, but also guides the free fall motion of the droplet; compared to the case where α is less than 90°, in this embodiment, the outer surface of the light-transmitting element 240 It will not form a "water collection tank" structure with the display screen 100, which can further reduce the problem of droplet accumulation forming a lens effect; compared with the case where a is less than 135°, in this embodiment, for angles of 135° and above, the vertical component of the droplet's own weight increases, thus effectively reducing the possibility of the droplet adhering to the light-transmitting element 240 due to surface tension; compared with the case where a is greater than or equal to 150°, in this embodiment, the outer surface of the light-transmitting element 240 can ensure that the optical fiber bundle has a sufficient light-emitting plane, which can avoid the influence of excessive tilt of the light-transmitting element 240 on the effective light-emitting plane of the optical fiber bundle.

[0055] Figure 2 This is a partial schematic diagram of the stepped unit of the touch display screen provided in this embodiment of the utility model. It should be noted that the diameter of the optical fiber unit 230 is small, making it difficult to observe with the naked eye; therefore, the actual size of the stepped unit 241 is also small. For ease of understanding, Figure 2 The image shown is a partially enlarged schematic representation of the stepped element 241. Figure 2 The proportional relationships presented are not intended to limit the specific scope of the touch display screen of this utility model.

[0056] See Figure 2 In an optional embodiment of the present invention, the light-transmitting element 240 includes a plurality of stepped units 241. The stepped units 241 are connected sequentially along the light-emitting inclined surface 231 with reference to it, and the shape of each stepped unit 241 matches the shape of the corresponding optical fiber unit 230.

[0057] Specifically, the second ends of the multiple fiber optic units 230 abut against the projection surface of these stepped units 241 on the other side of the light-transmitting element 240. It should be noted that the description of the coupling unit above only specifies that the side of the light-transmitting element 240 facing the fiber bundle has a stepped surface. In this embodiment, the multiple stepped units 241 are located on the side of the light-transmitting element 240 away from the fiber bundle, that is, on the outer surface facing the second side 120 of the display screen 100. When the coupling unit is set as a stepped surface and when the stepped units 241 exist simultaneously in this embodiment, the projections of the stepped surface and the stepped units 241 on the same plane need to coincide.

[0058] It is understood that in the touch display screen provided by this embodiment, the stepped units 241 formed on the side of the light-transmitting element 240 away from the optical fiber bundle are arranged sequentially along the light-emitting inclined surface 231, exhibiting a high-density micro-step-like texture on a microscopic level. This transforms the originally smooth outer surface of the light-transmitting element 240 into a stepped shape with microscopic roughness. When water comes into contact with this surface, the stepped units 241 disrupt the balance of surface tension of the droplets, causing the droplets to naturally diffuse into thin films or discrete droplets instead of maintaining a complete lens shape. This solves the problem of light path refraction or scattering caused by the lens effect of large-sized water droplets on traditional smooth surfaces. At the same time, the macroscopically decreasing stepped inclined surface structure causes the attached liquid to slide down the inclined surface under the action of gravity, further reducing the liquid residence time. In other words, the stepped unit 241 in this embodiment of the present invention can work in synergy with the inclined light-emitting surface 231 in the aforementioned embodiment. It can address the lens problem of droplet condensation from both macroscopic and microscopic perspectives. This synergy can effectively solve the problem of liquid condensation lens structure, thereby ensuring the effect of light signal transmission.

[0059] Secondly, the stepped surface on the inner surface of the light-transmitting element 240 precisely matches the fiber optic unit 230, and the stepped unit 241 on the outer surface coincides with the structure on the inner surface on the projection plane. This ensures that the light signal maintains a propagation path parallel to the front of the display screen 100 when passing through the light-transmitting element 240. This design, which combines macroscopic inclined flow guidance with the anti-condensation properties of the microscopic stepped unit 241, and the synchronous design of the stepped structures on the inner and outer surfaces of the light-transmitting element 240, can maintain the accuracy of infrared touch detection and effectively suppress the interference of external liquids on the light signal without changing the original optical path stability of the fiber bundle's stepped arrangement. This is achieved through the synergistic effect of the double liquid-resistant structure on the surface of the light-transmitting element 240, thus substantially improving the touch sensitivity of the touch display screen in complex environments.

[0060] In an optional embodiment of this utility model, the light-transmitting element 240 includes a resin light-transmitting element. As the name suggests, the light-transmitting element 240 is made of transparent resin material. During the manufacturing process, multiple optical fiber units 230 can be bundled into an optical fiber bundle, and then the optical fiber bundle can be placed in a special mold. Then, liquid resin is introduced into the mold, and after photocuring, the mold is demolded to obtain an integrated structure of the optical fiber bundle and the resin light-transmitting element.

[0061] It should be noted that in this process, the fiber bundle first needs to be arranged into an inclined shape with a "light-emitting inclined surface 231", which can be done by cutting or arranging it at an angle; secondly, the shape of the mold needs to match the shape of the light-emitting port of the second optical channel 212, and the bottom surface of the mold also needs to be set as an inclined surface, and the inclination angle needs to match the inclination angle of the aforementioned "light-emitting inclined surface 231".

[0062] It is understood that in the touch display screen provided by this utility model embodiment, the light-transmitting element 240 formed by light curing after filling with liquid resin will naturally form a structure on the surface of the cured resin light-transmitting element that matches the end of the optical fiber unit 230. Its inner surface is closely attached to the end of the optical fiber unit 230. In this case, the process of separately processing the aforementioned coupling part can be eliminated, reducing the manufacturing difficulty of the light-transmitting element 240. Secondly, this method can eliminate the assembly gap between the optical fiber unit 230 and the light-transmitting element 240, which can effectively improve the accuracy of the connection between the coupling part and the end of the optical fiber unit 230, reduce the angle deviation caused by assembly or processing errors, and thus solve the problem of optical path offset or interface refraction loss caused by angle deviation.

[0063] In an optional embodiment of this utility model, based on the aforementioned embodiments, the structure of the resin light-transmitting component can be configured as an "L"-shaped block that matches the shape of the first light channel 211 and the second light channel 212. Specifically, the resin light-transmitting component may include a first light-transmitting body 242 and a second light-transmitting body 243. The first light-transmitting body 242 is wrapped around the outside of a plurality of optical fiber units 230, and the outer shell 210 where the first light channel 211 is located is wrapped around the outside of the first light-transmitting body 242. The second light-transmitting body 243 is also wrapped around the outside of a plurality of optical fiber units 230, and the outer shell 210 where the second light channel 212 is located is wrapped around the outside of the second light-transmitting body 243.

[0064] Specifically, the shape of the mold can be set to be the same as that of the outer shell 210. From another perspective, the mold also includes the first optical channel 211 and the second optical channel 212. Then, the fiber bundle formed by multiple fiber units 230 is fixed in the mold, and liquid resin is put into the mold. As the resin increases, the resin will gradually fill the mold and completely wrap the fiber bundle. Further, after photocuring, the mold can be demolded to obtain an "L" block-shaped and integrated resin light-transmitting component and multiple fiber units 230. Further, the obtained block-shaped component can be installed in the outer shell 210 as a whole.

[0065] It is understood that in the touch display screen provided by this utility model embodiment, the mold shape is perfectly matched with the "L"-shaped light channel of the outer shell 210. This allows the first light-transmitting body 242 and the second light-transmitting body 243 formed after the resin is cured to tightly wrap the optical fiber bundle and adapt to the wrapping structure of the outer shell 210. This ensures that the arrangement angle of the optical fiber unit 230 at the "L"-shaped bend strictly corresponds to the direction of the light channel.

[0066] Secondly, the full-encapsulation and curing of the optical fiber bundle when the liquid resin fills the mold can, on the one hand, eliminate the risk of stress concentration or local displacement of the optical fiber unit 230 at the bending point, and on the other hand, it can also enhance the deformation resistance of the optical path bending interface by forming multiple physical constraints through the double-layer nesting of the resin and the outer shell 210.

[0067] In addition, after the integrally molded "L"-shaped block is installed into the housing 210, its outer contour fits seamlessly with the inner wall of the housing 210, which can effectively block external environmental factors from eroding the internal optical fiber unit 230. At the same time, it can also avoid the cumulative error caused by multiple positioning in the separate assembly, so as to maintain the consistency of infrared signal transmission and reception direction in complex optical path turning scenarios.

[0068] In an optional embodiment of this utility model, a polarizing grid is further provided on the surface of the light-transmitting element 240. The polarizing grid is used to filter stray light. Specifically, a polarizing grid with a specific direction can be processed on the surface of the light-transmitting element 240. The polarizing grid can select polarized light with a specific direction from a number of incident light sources through polarization filtering. When the signal transceiver 220 is configured as a signal receiver, the polarizing grid can select polarized light parallel to the screen surface at the front end of the infrared signal receiver, thereby ensuring that the infrared signal-to-noise ratio meets the reception discrimination requirements. This can solve the problem of recognition failure caused by interference from outdoor ambient scattered light sources.

[0069] It should be noted that the specific orientation of the polarization grid can be adaptively set according to the actual receiving requirements of the signal transceiver 220, and this article does not impose specific limitations on it. It should also be noted that, with the aforementioned stepped unit 241 or stepped surface set, the polarization grid can be obtained through secondary processing after the light-transmitting element 240 is formed and the stepped unit 241 or stepped surface is set. Specifically, it can be adaptively set according to the actual situation.

[0070] In an optional embodiment of this invention, a polarization layer is formed on the inner wall of the first optical channel 211 and the second optical channel 212; specifically, the polarization layer can be formed by creating a micro-frosted texture structure on the inner wall surface of the outer shell 210. It is understood that this micro-textured polarization layer can filter out light signals with non-preset polarization directions while avoiding visible changes in morphology, thus reducing background noise caused by reflection or scattering from the inner wall of the outer shell 210.

[0071] Combining the collaborative design of the fiber bundle and the light-transmitting element 240 in previous embodiments, the polarization layer further optimizes the directionality of the light path during the folding and propagation process, effectively improving the effective transmission ratio of infrared signals within the channel. Furthermore, the polarization layer is directly integrated into the inner wall surface of the housing 210, eliminating the need for additional optical components. This maintains the integrated sealed structure of the housing 210 and the light-transmitting element 240 while enhancing the signal-to-noise ratio of the touch signal through the polarization effect. This ensures the stability of touch positioning accuracy and anti-interference capability in complex optical path folding scenarios. Additionally, when the housing 210 is set as a transparent component, the polarization layer can filter out stray light from the environment, effectively blocking external ambient light from penetrating the housing 210 and entering the interior of the first optical channel 211 and the second optical channel 212.

[0072] In an optional embodiment of this invention, a light-shielding layer is formed on the outer surface of the housing 210 containing the first optical channel 211 and the second optical channel 212. Specifically, the outer surface of the housing 210 can be blackened to form an opaque outer barrier, i.e., a light-shielding layer. It is understood that the light-shielding layer can effectively block ambient light from penetrating the housing 210 and entering the interior of the first optical channel 211 and the second optical channel 212. It should be noted that the light-shielding layer in this embodiment can be used selectively with the polarization layer in the aforementioned embodiments, or both can be used simultaneously. Specifically, the choice can be made adaptively according to the actual situation.

[0073] It is also understandable that the light-shielding layer formed by the black spraying process can maintain the original structural sealing of the outer shell 210 while preventing cross-interference between external stray light and the infrared signals transmitted within the channel. In particular, it can physically shield areas outside the light-transmitting element 240 that may have unexpected light transmission paths. Combined with the collaborative design of the light-transmitting element 240 and the optical fiber unit 230 in the previous embodiment, the light-shielding layer can provide double protection for the signal-to-noise ratio of the infrared touch signal by suppressing the influence of ambient light noise on the signal transceiver 220.

[0074] In addition, the light-shielding layer is directly integrated into the surface of the housing 210, eliminating the need for an additional light-shielding structure. This retains the integrated assembly characteristics of the housing 210 and the internal components, while also achieving directional purification of touch signal transmission under complex lighting conditions through a simple surface treatment process. This significantly enhances the anti-interference capability and positioning reliability of touch detection in outdoor high-brightness or multi-light source application scenarios.

[0075] In an optional embodiment of this utility model, the touch display screen further includes a control component, which is electrically connected to the transceiver 220. The control component is used to monitor the received signal-to-noise ratio through the transceiver 220. The control component is equipped with a signal-to-noise ratio compensation algorithm, which can automatically adjust the transmission power of the transceiver 220 (when the transceiver 220 is configured as a signal transmitter) or the receiving sensitivity (when the transceiver 220 is configured as a signal receiver) according to the received signal-to-noise ratio monitored by the transceiver 220, thereby ensuring stable touch performance under different signal-to-noise ratio conditions.

[0076] Specifically, a preset signal-to-noise ratio can be set in advance. The preset signal-to-noise ratio can be obtained from multiple signal detections. In use, the preset signal-to-noise ratio is set in the built-in module of the control component. When the control component detects that the actual received signal-to-noise ratio is lower than the preset signal-to-noise ratio, the compensation algorithm built into the control component will increase the transmission power or receiving sensitivity of the signal transceiver 200.

[0077] It is understood that in the touch display screen provided by this embodiment, the control component monitors the signal-to-noise ratio (SNR) of the transceiver 220 in real time. When the actual SNR is detected to be lower than a preset threshold, the signal transmission power or receiving sensitivity is dynamically adjusted through a built-in compensation algorithm to compensate for the interference of external environmental changes on the quality of optical signal transmission. This closed-loop adjustment mechanism based on actual SNR feedback enables the system to perform real-time correction for signal attenuation caused by factors such as outdoor light fluctuations, pollutant blockage, or equipment aging, ensuring a dynamic balance in the intensity of touch signal transmission and reception. Combined with the multiple anti-interference designs of the light-transmitting element 240, the light-shielding layer, and the polarization layer in the previous embodiment, the SNR compensation algorithm further enhances the robustness of the touch signal in complex environments.

[0078] In an optional embodiment of this utility model, the touch display screen further includes a temperature sensor, which is electrically connected to the control component. The control component is used to detect the ambient temperature through the temperature sensor. The control component has a temperature compensation algorithm that can automatically adjust the transmission power of the transceiver 220 (when the transceiver 220 is configured as a signal transmitter) or the receiving sensitivity (when the transceiver 220 is configured as a signal receiver) according to the ambient temperature monitored by the temperature sensor, thereby ensuring stable touch performance under different temperature conditions.

[0079] Specifically, a first preset temperature and a second preset temperature can be preset. The first preset temperature is the upper limit of the suitable temperature range, and the second preset temperature is the lower limit of the suitable temperature range. In use, the first preset temperature and the second preset temperature are set in the built-in module of the control component. When the control component detects that the ambient temperature is lower than the second preset temperature, or when the control component detects that the ambient temperature is higher than the first preset temperature, the compensation algorithm built into the control component will increase the transmission power or reception sensitivity of the signal transceiver 200.

[0080] It is understood that in the touch display screen provided in this embodiment of the present invention, the control component, based on the ambient temperature data detected in real time by the temperature sensor, can dynamically adjust the transmission power or receiving sensitivity of the transceiver 220 through a compensation algorithm when the temperature exceeds a preset reasonable range, in order to offset the impact of temperature changes on the infrared signal transmission efficiency. In other words, when the ambient temperature is below the lower limit or above the upper limit, the compensation algorithm can specifically address the signal attenuation caused by low temperature or the device response hysteresis caused by high temperature by increasing the signal strength or receiving sensitivity. Combined with the closed-loop adjustment mechanism of the signal-to-noise ratio compensation algorithm in the previous embodiment, the temperature compensation algorithm further expands the environmental adaptability range of the touch display screen. Through multi-dimensional parameter linkage adjustment, it can maintain the stability of infrared signal transmission and reception strength in complex temperature fluctuation scenarios.

[0081] It should be noted that the technical solutions in the various embodiments of this utility model can be combined with each other, but the basis for such combination is that they can be implemented by those skilled in the art. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist, that is, it is not within the protection scope of this utility model.

[0082] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A touch display screen, characterized in that, include: The display screen (100) includes: First side view (110); The second side (120) is disposed opposite to the first side (110); The signal transceiver (200) includes: The housing (210) includes: The first optical channel (211) is located on the first side (110). The second light channel (212) is located on the front of the display screen (100) and is connected to the first light channel (211). The light outlet of the second light channel (212) faces the second side (120). A signal transceiver (220) is disposed within the first optical channel (211); Multiple optical fiber units (230) are disposed in the first optical channel (211) and the second optical channel (212). The first end of each optical fiber unit (230) is connected to the signal transceiver (220). The second ends of the multiple optical fiber units (230) are arranged in a stepped manner and constrain the light-emitting inclined surface (231). The light-emitting inclined surface (231) is disposed at the light-emitting port of the second optical channel (212). A light-transmitting element (240) is disposed on the light-emitting inclined surface (231), and the shape of the light-transmitting element (240) matches the shape of the light-emitting inclined surface (231).

2. The touch display screen according to claim 1, characterized in that, The light-transmitting element (240) has a plurality of stepped units (241) on the surface facing the second side (120). The plurality of stepped units (241) are connected in sequence along the light-emitting inclined surface (231), and the shape of the stepped unit (241) matches the shape of the optical fiber unit (230).

3. The touch display screen according to claim 2, characterized in that, The light-transmitting element (240) includes a resin light-transmitting element.

4. The touch display screen according to claim 3, characterized in that, The resin light-transmitting element includes: The first light-transmitting body (242) is wrapped around the outside of the plurality of optical fiber units (230), and the first optical channel (211) is wrapped around the outside of the first light-transmitting body (242); The second light-transmitting body (243) is wrapped around the outside of the plurality of optical fiber units (230) and connected to the first light-transmitting body (242), and the second optical channel (212) is wrapped around the outside of the second light-transmitting body (243).

5. The touch display screen according to claim 1, characterized in that, The light-emitting inclined surface (231) is set at a preset angle to the front of the display screen (100), wherein the preset angle is α, and the value of α is in the range of 135°≤α≤150°.

6. The touch display screen according to any one of claims 1 to 5, characterized in that, The surface of the light-transmitting element (240) is provided with a polarizing grid, which is used to filter stray light.

7. The touch display screen according to any one of claims 1 to 5, characterized in that, The inner walls of the first optical channel (211) and the second optical channel (212) are formed with polarization layers.

8. The touch display screen according to any one of claims 1 to 5, characterized in that, The outer surfaces of the first optical channel (211) and the second optical channel (212) are formed with light-shielding layers.

9. The touch display screen according to any one of claims 1 to 5, characterized in that, It also includes a control component electrically connected to the transceiver (220), the control component being used to monitor the received signal-to-noise ratio via the transceiver (220); When the received signal-to-noise ratio is lower than the preset signal-to-noise ratio, the control component is used to increase the transmit power or receive sensitivity of the signal transceiver (200).

10. The touch display screen according to claim 9, characterized in that, It also includes a temperature sensor, which is electrically connected to the control component, and the control component is used to monitor the ambient temperature through the temperature sensor. When the ambient temperature is higher than the first preset temperature, the control component is used to increase the transmission power or receiving sensitivity of the signal transceiver (200); When the ambient temperature is lower than the second preset temperature, the control component is used to increase the transmission power or receiving sensitivity of the signal transceiver (200); The first preset temperature is greater than the second preset temperature.

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