Infrared touch screen and display device

Abstract

The utility model discloses an infrared touch control screen and a display device, and relates to the technical field of touch control, the infrared touch control screen comprises a display module, a frame and an infrared module, the display module is provided with a first surface and a second surface which are opposite to each other, and a peripheral side surface connected with the first surface and the second surface; the frame is arranged on the periphery of the display module in a surrounding mode, the frame is integrally formed and comprises a body part and end parts arranged at the two ends of the body part in the extending direction of the frame, the body part is bent and formed along the contour of the peripheral side face and forms a plurality of side edge parts, and a splicing line formed by connecting the two end parts is located on one side edge part; the infrared module is arranged in the frame and can emit infrared rays towards the first surface. According to the technical scheme, the integrally-formed frame is bent and formed, so that the frame forms the splicing line located on the side edge portion of the frame, splicing gaps of the frame are reduced, and meanwhile the stability and attractiveness of the overall structure of the frame are improved.

Description

Technical Field

[0001] The utility model relates to the field of touch technology, in particular to an infrared touch screen and a display device. Background Art

[0002] Infrared touch technology is an on-screen touch technology that places an infrared module inside the bezel at the edge of the screen. Some existing bezels are constructed by joining two long sides with two short sides, resulting in noticeable seams at the corners. Other bezels use connectors to join the long and short sides at the corners, also resulting in significant seams on both sides. Utility Model Content

[0003] The main purpose of the utility model is to provide an infrared touch screen and a display device, aiming to reduce the splicing gap of the frame.

[0004] To achieve the above objectives, the infrared touch screen proposed in this utility model includes:

[0005] A display module having a first surface and a second surface opposite to each other, and a peripheral side surface connecting the first surface and the second surface;

[0006] a frame, disposed around the periphery of the display module, the frame being integrally formed and including a main body and end portions disposed at both ends of the main body in its extending direction, the main body being bent along the contour of the peripheral side surface to form a plurality of side portions, and a splicing line formed by connecting two of the end portions being located at one of the side portions; and

[0007] The infrared module is disposed in the frame and can emit infrared rays toward the first surface.

[0008] In one embodiment, the length of the side portion where the splicing line is located is a, the distance from the splicing line to any end of the corresponding side portion is L, and a / 4≤L≤3a / 4.

[0009] In one embodiment, the frame includes a frame end wall, a frame inner side wall arranged on the outside of the frame end wall, and a frame outer side wall arranged on the inside of the frame end wall. The frame end wall, the frame inner side wall and the frame outer side wall jointly define a accommodating cavity. The infrared module is arranged in the accommodating cavity. The infrared touch screen also includes a pressure strip connected to the frame, and the pressure strip is pressed against the infrared module.

[0010] In one embodiment, the infrared module includes a circuit board and a light-emitting unit provided on the circuit board, one side of the pressure strip is connected to the second surface, and the other side abuts the circuit board, and a light-emitting channel is formed between the pressure strip and the outer wall of the frame. The infrared touch screen also includes a filter strip provided on the light-emitting channel, and the filter strip protrudes from the first surface so that the infrared light of the light-emitting unit can be emitted from the filter strip to the outside of the first surface.

[0011] In one embodiment, a side edge of the outer side wall of the frame away from the frame end wall extends inwardly to form a mounting flange, and the filter strip abuts against the mounting flange and the pressure strip respectively.

[0012] In one embodiment, a distance from a side surface of the mounting flange away from the frame end wall to the first surface is H, and 1.5 mm ≤ H ≤ 2.5 mm.

[0013] In one embodiment, a distance D between the mounting flange and the outer side of the frame away from the outer side wall is 3 mm ≤ D ≤ 5 mm.

[0014] In one embodiment, the two end portions are connected by welding and are shaped by a polishing process.

[0015] In one embodiment, the outer side wall of the frame is connected to at least one frame end wall and at least one mounting flange at each side portion, and two adjacent frame end walls are connected by welding at the bending portion of the outer side wall of the frame and are formed by a polishing process.

[0016] In one embodiment, the outer side wall of the frame is connected to at least one frame end wall and at least one mounting flange at each side portion, and two adjacent mounting flanges are connected by welding at the bend of the outer side wall of the frame and are formed by a polishing process.

[0017] In one embodiment, the pressure strip is fixed to the inner side wall of the frame by screws.

[0018] In one embodiment, one of the pressure strip and the inner side wall of the frame is provided with a positioning protrusion, and the other is provided with a positioning groove, and the positioning protrusion is positioned and clamped in the positioning groove.

[0019] In one embodiment, the frame and the molding are made of metal.

[0020] The present invention also provides a display device, comprising the aforementioned infrared touch screen.

[0021] The technical solution of the utility model adopts an integrally formed frame that is bent and formed, so that the frame forms a splicing line located at its side edge, thereby reducing the splicing gap of the frame and improving the stability and aesthetics of the overall structure of the frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0023] Figure 1 This is a structural diagram of an embodiment of the infrared touch screen provided by the present utility model;

[0024] Figure 2 for Figure 1 Schematic diagram of the structure of the middle frame;

[0025] Figure 3 This is a top view of an embodiment of the infrared touch screen provided by the present invention.

[0026] Description of Figure Numbers:

[0027] 10. Infrared touch screen; 100. Display module; 200. Frame; 300. Infrared module; 400. Pressing strip; 500. Filter strip; 110. First surface; 120. Second surface; 130. Peripheral side surface; 210. Side edge; 220. Splicing line; 230. Frame end wall; 240. Frame inner side wall; 250. Frame outer side wall; 260. Mounting flange; 270. Accommodating cavity; 280. Positioning groove; 310. Circuit board; 320. Light-emitting unit; 410. Positioning protrusion.

[0028] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0029] 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 embodiments described 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 making creative efforts shall fall within the scope of protection of the present invention.

[0030] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0031] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0032] The present invention provides an infrared touch screen 10 .

[0033] The infrared touch screen 10 is a display screen that uses infrared technology to detect user touch operations. The infrared touch screen 10 forms a detection area composed of infrared rays by arranging infrared transmitters and infrared receivers around the screen. When the user's finger or an object such as a stylus touches or approaches the screen, it blocks some of the infrared rays, and the infrared receiver cannot receive the infrared rays emitted by the infrared transmitter. The system determines the location of the touch point by detecting these blocked infrared rays and performs corresponding processing. The infrared touch screen 10 includes a frame 200 and an infrared module 300. The frame 200 is used to fix the entire infrared touch screen 10 and provide structural support. The infrared module 300 can emit infrared rays, receive infrared signals, process the received signals, and convert these signals into user interface operation instructions. Because touch is detected by infrared rays, a response can be triggered without directly contacting the screen surface. The infrared touch screen 10 generally has a high degree of transparency and does not affect the display quality. Compared with other types of touch technologies (such as capacitive or resistive), the infrared touch screen 10 is less expensive. The infrared touch screen 10 can be applied to various occasions or display devices, such as self-service terminals, information query machines, electronic whiteboards, etc.

[0034] See also Figure 1In one embodiment of the present invention, the infrared touch screen 10 includes a display module 100, a frame 200 and an infrared module 300. The display module 100 has a first surface 110 and a second surface 120 opposite to each other, and a peripheral side surface 130 connecting the first surface 110 and the second surface 120; the frame 200 is arranged around the outer periphery of the display module 100, and the frame 200 is integrally formed and includes a main body and end portions at both ends of the main body in its extension direction. The main body is bent along the contour of the peripheral side surface 130 to form a plurality of side portions 210, and a splicing line 220 formed by connecting the two end portions is located at one of the side portions 210; the infrared module 300 is arranged in the frame 200, and the infrared module 300 can emit infrared rays toward the first surface 110.

[0035] Specifically, the display module 100 has a first surface 110, a second surface 120, and a peripheral side surface 130 connecting the two surfaces. The first surface 110 is usually the front surface for user interaction, and the second surface 120 serves as the back surface for connection with other components. The frame 200 is arranged around the periphery of the display module 100 and is used to install and support the display module 100 and other components. The infrared module 300 is arranged inside the frame 200 and is capable of emitting infrared rays toward the first surface 110 of the display module 100 to form a detection area on the first surface 110. The use of infrared rays is to detect touch actions. When the user's finger or other object blocks the infrared rays, the touch location can be determined.

[0036] The frame 200 is manufactured using an integrated molding process, with its main body being bent along the contour of the peripheral side surface 130 of the display module 100, thereby forming a plurality of side portions 210. For example, a triangular frame 200 forms three side portions 210, a rectangular frame 200 forms four side portions 210, and a pentagonal frame 200 forms five side portions 210. Where two ends meet, a splicing line 220 is formed, located on one of the side portions 210.

[0037] The frame 200 is formed in one piece and bent along the contour of the peripheral side surface 130 of the display module 100 to form only one splicing line 220, which greatly reduces the splicing gap of the frame 200. At the same time, the splicing line 220 is located at the side portion 210 of the frame 200, avoiding the structural instability caused by the splicing line 220 being located at the corner of the frame 200 due to stress concentration, thereby helping to improve the stability of the entire infrared touch screen 10. Even if the corners of the infrared touch screen 10 are hit, the frame 200 is not easily deformed. In addition, the four corners of the infrared touch screen 10 are often one of the visual focuses, and the splicing line 220 located at the side portion 210 can better hide the splicing marks, thereby improving the aesthetics of the product. The corners of the frame 200 may be parts that are frequently touched by users, such as for holding the device or as support points in some cases. Placing the splicing line 220 on the side portion 210, away from these frequent contact points, can reduce the risk of wear or separation of the splicing due to long-term use; at the same time, when the fingers touch the corners of the frame 200, it can also reduce the interference of the splicing line 220 on the user's operation.

[0038] The technical solution of the present invention adopts an integrally formed frame 200 that is bent and formed, so that the frame 200 forms a splicing line 220 located at its side portion 210, thereby reducing the splicing gap of the frame 200 and improving the stability and aesthetics of the overall structure of the frame 200.

[0039] In one embodiment, see Figure 3 The length of the side portion 210 where the splicing line 220 is located is a, and the distance from the splicing line 220 to any end of the corresponding side portion 210 is L, and a / 4≤L≤3a / 4.

[0040] By placing the splicing line 220 in the middle area of ​​the side portion 210 (i.e., the splicing line 220 is at least a / 4 to 3a / 4 away from the two ends of the side portion 210), the stress generated by the splicing can be evenly distributed, reducing the risk of fracture due to stress concentration; by moving the splicing line 220 away from the two ends of the side portion 210, the introduction of potential fracture points at the weakest part of the frame 200 can be avoided, thereby improving the structural strength of the entire frame 200.

[0041] In one embodiment, see Figure 1 and Figure 2 The frame 200 includes a frame end wall 230, a frame inner side wall 240 arranged on the outside of the frame end wall 230, and a frame outer side wall 250 arranged on the inside of the frame end wall 230. The frame end wall 230, the frame inner side wall 240 and the frame outer side wall 250 jointly define a accommodating cavity 270. The infrared module 300 is arranged in the accommodating cavity 270. The infrared touch screen 10 also includes a pressure strip 400 connected to the frame 200, and the pressure strip 400 is pressed against the infrared module 300.

[0042] The frame 200 includes a frame end wall 230, a frame inner side wall 240, and a frame outer side wall 250. The frame end wall 230, the frame inner side wall 240, and the frame outer side wall 250 together define a receiving cavity 270. The receiving cavity 270 is annular. The frame 200 can be a square frame, a round frame, or other polygonal frame 200. Correspondingly, the receiving cavity 270 is in the shape of a square ring, a circular ring, or other polygonal ring. The frame outer side wall 250 encloses the peripheral side surface 130 of the display module 100. The frame end wall 230 is located on the side where the second surface 120 of the display module 100 is located. The infrared module 300 is disposed in the receiving cavity 270 and is capable of emitting infrared rays toward the first surface 110 to form a detection area outside the first surface 110. The pressure strip 400 is connected to the frame 200 and presses the infrared module 300 to limit the infrared module 300 in the accommodating cavity 270, preventing the infrared module 300 from moving in the accommodating cavity 270 or slipping out of the accommodating cavity 270, thereby ensuring the stability and reliability of the installation of the infrared module 300 and the frame 200.

[0043] In one embodiment, see Figure 1 The infrared module 300 includes a circuit board 310 and a light-emitting unit 320 provided on the circuit board 310. One side of the pressure strip 400 is connected to the second surface 120, and the other side abuts the circuit board 310. The pressure strip 400 and the outer wall 250 of the frame are separated to form a light output channel. The infrared touch screen 10 also includes a filter strip 500 provided in the light output channel. The filter strip 500 protrudes from the first surface 110 so that the infrared rays of the light-emitting unit 320 can be emitted from the filter strip 500 to the outside of the first surface 110.

[0044] The infrared module 300 includes a circuit board 310 and a light-emitting unit 320. The circuit board 310 is the basis for carrying electronic components and is responsible for controlling the emission of infrared signals. The light-emitting unit 320 is installed on the circuit board 310 for emitting infrared rays. One side of the pressure strip 400 is connected to the second surface 120, and is used to support the display module 100, and to achieve a stable connection between the display module 100 and the frame 200, and to ensure the stability of the position of the display module 100. The pressure strip 400 and the second surface 120 can be bonded by an adhesive, double-sided tape or other solid glue, or can be connected by magnetic connection, fastener connection, welding, etc. The other side of the pressure strip 400 abuts the circuit board 310 to achieve compression of the circuit board 310, ensure that the infrared module 300 is stably installed in the accommodating cavity 270, and prevent it from loosening due to external impact or vibration. A light-emission channel is formed between the crimping portion and the outer frame wall 250. The light-emitting unit 320 is located on the side of the circuit board 310 closest to the display module 100, allowing infrared light emitted by the light-emitting unit 320 to pass through the light-emission channel and reach the side of the first surface 110. This evenly distributes the infrared light outside the first surface 110, forming an effective detection area for capturing user touch actions. The light-emission channel ensures the effective propagation of infrared light, reduces light loss, and enhances touch detection sensitivity.

[0045] The filter strip 500 can filter out stray light in the environment and only allow infrared light of a specific wavelength to pass through, thereby reducing the impact of ambient light on infrared detection, improving touch recognition accuracy, and enhancing the contrast of infrared light in the detection area, making touch point detection clearer and more reliable. The filter strip 500 is located within the light output channel, ensuring that all infrared light passing through the light output channel is screened by the filter strip 500. The infrared light is filtered as it passes through the light output channel, ensuring that only infrared light that meets the requirements can be emitted from the portion of the filter strip 500 protruding from the first surface 110 and reach the outside of the first surface 110. The filter strip 500 can be made of optical glass or organic glass, and may have a specific coating or coating added to its surface to achieve a better filtering effect.

[0046] In one embodiment, see Figure 1 The side edge of the outer frame side wall 250 away from the frame end wall 230 extends inward to form a mounting flange 260 , and the filter strip 500 abuts against the mounting flange 260 and the pressure strip 400 respectively.

[0047] The mounting flange 260 and the pressure strip 400 are spaced apart to form a portion of the light exit channel. The mounting flange 260 abuts one side of the filter bar 500, while the side of the pressure strip 400 facing away from the circuit board 310 abuts the opposite side of the filter bar 500. The mounting flange 260 and the pressure strip 400 jointly support the filter bar 500, securing it in the light exit channel. The pressure strip 400 provides support to the filter bar 500, securing it in place. Conversely, the reaction force exerted by the filter bar 500 on the pressure strip 400 is transferred to the circuit board 310, further enhancing the stability of the pressure strip 400 on the circuit board 310.

[0048] Furthermore, the filter strip 500 has a notched groove on the side opposite the mounting flange 260. A portion of the pressure strip 400 is positioned within the notched groove, ensuring close contact between the notched groove and the pressure strip 400. This ensures precise and rapid positioning of the filter strip 500 during installation, simplifying the installation and removal process of the filter strip 500 and improving the convenience of installation and replacement of the filter strip 500. The sidewall of the pressure strip 400 facing away from the circuit board 310 abuts the bottom surface of the notched groove, while the other sidewall of the pressure strip 400 facing the outer frame wall 250 abuts the sidewall of the notched groove. By abutting the filter strip 500 in two intersecting directions, the pressure strip 400 provides good support for the filter strip 500 in both directions. At the same time, the mounting flange 260 transmits the force to the holding strip 400 through the filter strip 500 and acts on the circuit board 310 to enhance the pressing effect on the circuit board 310, thereby enhancing the structural stability and reliability among the filter strip 500, the holding strip 400 and the circuit board 310.

[0049] In other embodiments, the pressure strip 400 may also directly abut against the side of the filter strip 500 opposite to the circuit board 310, or abut against the side of the filter strip 500 away from the outer frame wall 250; or there may be no contact between the pressure strip 400 and the filter strip 500, and the filter strip 500 may be fixed to the outer frame wall 250 by bonding.

[0050] In one embodiment, see Figure 1 The distance between the mounting flange 260 and the first surface 110 from the side away from the frame end wall 230 is H, 1.5 mm ≤ H ≤ 2.5 mm.

[0051] The mounting flange 260 abuts the side of the filter bar 500 facing away from the circuit board 310, such that H is related to the height of the filter bar 500 protruding from the first surface 110, and the height of the filter bar 500 protruding from the first surface 110 is less than H. When H is less than 1.5 mm, the height of the filter bar 500 protruding from the first surface 110 is even smaller, thereby reducing the intensity of infrared light emitted from the filter bar 500 by the light-emitting unit 320. When H is greater than 2.5 mm, the gap formed between the first surface 110 and the mounting flange 260 increases significantly, making the filter bar 500 more visible and increasing the overall thickness of the infrared touch screen 10. When 1.5 mm ≤ H ≤ 2.5 mm, the intensity of the emitted infrared light is guaranteed while preventing a large gap between the first surface 110 and the mounting flange 260, and maintaining a relatively low thickness of the infrared touch screen 10.

[0052] In one embodiment, see Figure 1 and Figure 2 The distance between the mounting flange 260 and the side of the frame outer wall 250 away from the frame inner wall 240 is D, and 3 mm ≤ D ≤ 5 mm.

[0053] D is the width of the mounting flange 260 on one of the side portions 210. When D is less than 3 mm, the contact area between the mounting flange 260 and the filter strip 500 is small, providing limited contact force to the filter strip 500. Furthermore, an overly narrow mounting flange 260 is less aesthetically pleasing. When D is greater than 5 mm, the width of the mounting flange 260 is too large, reducing the visible area of ​​the first surface 110 of the display module 100. Furthermore, an overly wide mounting flange 260 appears bulky. When 3 mm ≤ D ≤ 5 mm, a larger contact area is provided for the filter strip 500, enhancing the connection stability between the filter strip 500 and the frame 200. This also improves the overall aesthetics of the infrared touch screen 10, making the infrared touch screen 10 appear more coordinated and professional.

[0054] In one embodiment, the two ends are connected by welding and formed by a polishing process.

[0055] The two ends of the frame 200 are securely connected by welding. Welding can achieve a permanent connection between the two ends of the frame 200. Compared with other connection methods (such as bonding), the weld at the two ends has a higher connection strength. Welding helps maintain the integrity and consistency of the frame 200 structure. Welding methods such as MIG welding, TIG welding, or arc welding can be used.

[0056] After welding is completed, the weld can be polished. By using abrasive tools and abrasives to remove rough surfaces and irregular shapes generated during the welding process, the weld surface is smooth and has a high finish, thereby reducing the presence of the splicing line 220 and making the frame 200 look more beautiful. Since the polished surface is generally smoother, it is less likely to harbor dirt and reduce the possibility of corrosion.

[0057] In one embodiment, the outer frame sidewall 250 is connected to at least one frame end wall 230 and at least one mounting flange 260 at each side portion 210 , and two adjacent frame end walls 230 are connected by welding at the bend of the outer frame sidewall 250 and formed by a polishing process.

[0058] The side portions 210 where the splicing line 220 is located are each connected to two frame end walls 230. When the two ends are connected by welding and formed through a polishing process, the two frame end walls 230 are also welded and polished together. The remaining side portions 210 are each connected to a frame end wall 230. The frame end wall 230 of each side portion 210 is connected to the frame end wall 230 of the adjacent side portion 210 by welding at the bend of the frame 200 and formed through a polishing process. This ensures that the frame end walls 230 of the two adjacent side portions 210 are firmly connected and have a smooth appearance, thereby improving the overall appearance of the frame 200.

[0059] In one embodiment, the outer frame wall 250 is connected to at least one frame end wall 230 and at least one mounting flange 260 at each side portion 210 , and two adjacent mounting flanges 260 are connected by welding at the bend of the outer frame wall 250 and formed by a polishing process.

[0060] The side portion 210 where the splicing line 220 is located is connected to two mounting flanges 260. When the two ends are connected by welding and polished, the two mounting flanges 260 are also welded and polished. The remaining side portions 210 are each connected to a mounting flange 260. The mounting flange 260 of each side portion 210 is welded to the mounting flange 260 of the adjacent side portion 210 at the bend of the frame 200 and polished to ensure that the mounting flanges 260 of the two adjacent side portions 210 are firmly connected and have a smooth appearance, thereby improving the overall appearance of the frame 200.

[0061] In one embodiment, see Figure 1 The pressure strip 400 is fixed to the inner side wall 240 of the frame by screws.

[0062] By using screws to secure the bead 400 to the inner sidewall 240 of the frame, a detachable connection between the bead 400 and the frame 200 is achieved. This also increases the stability of the connection between the bead 400 and the frame 200, ensuring that the infrared module 300 will not be displaced by external factors (such as vibration) during use. The screw-secured installation method allows for quick and convenient removal and reinstallation when maintenance or replacement of the infrared module 300 is required.

[0063] In other embodiments, the bead 400 and the frame inner sidewall 240 may also be connected by welding, clamping, magnetic connection, bonding, etc. The bead 400 may also be connected to the frame outer sidewall 250 and / or the frame end wall 230, or to at least two of the frame end wall 230, the frame inner sidewall 240, and the frame outer sidewall 250.

[0064] In one embodiment, see Figure 1 and Figure 2 The pressure strip 400 is provided with a positioning protrusion 410 , and the inner side wall 240 of the frame is provided with a positioning groove 280 , and the positioning protrusion 410 is positioned and clamped in the positioning groove 280 .

[0065] During installation, the positioning protrusions 410 on the bead 400 can be aligned with the positioning grooves 280 on the inner sidewall 240 of the frame to achieve preliminary positioning between the bead 400 and the inner sidewall 240 of the frame. The bead 400 can then be fixed to the inner sidewall 240 of the frame using screws to ensure a secure installation of the bead 400. The design of the positioning protrusions 410 and the positioning grooves 280 ensures precise alignment between the bead 400 and the inner sidewall 240 of the frame, preventing deviations during installation, improving the manufacturing accuracy and assembly efficiency of the infrared touch screen 10, and enhancing the stability of the overall structure.

[0066] In another embodiment, the holding strip 400 is provided with a positioning groove 280 , and the inner side wall 240 of the frame is provided with a positioning protrusion 410 , and the positioning protrusion 410 is positioned and clamped in the positioning groove 280 .

[0067] In other embodiments, one of the pressure strip 400 and the inner side wall 240 of the frame is provided with a magnet, and the other is provided with a metal piece, and the magnet and the metal piece are magnetically connected to achieve rapid positioning of the pressure strip 400 and the inner side wall 240 of the frame.

[0068] In one embodiment, the frame 200 and the molding 400 are made of metal.

[0069] The frame 200 and the bead 400 are made of metal, and can be made of aluminum alloy, stainless steel, or other metal materials with good strength and rigidity. The bead 400 can be made of the same material as the frame 200 to ensure consistency and coordination of the overall structure; different materials can also be used to enhance the product's appearance based on the design style.

[0070] Metal materials have high strength and rigidity, which can provide better structural support and stability, ensuring that the entire infrared touch screen 10 does not deform easily when subjected to external impact or pressure; metal has good thermal conductivity, which can help the circuit board 310 and other electronic components dissipate heat, thereby extending the service life of the equipment; metal materials have electromagnetic shielding effects, which can reduce the impact of external electromagnetic interference on the infrared touch screen 10 and improve the stability of the system; depending on the selected metal material, materials with certain corrosion resistance, such as stainless steel or surface-treated aluminum alloys, can be selected to increase the service life of the equipment in harsh environments; metal materials are easy to process and can be processed using a variety of processes such as stamping, cutting, and bending, which facilitates manufacturing and assembly; metal materials have a good appearance texture and can be given a good visual effect through surface treatment processes such as spraying and anodizing.

[0071] In other embodiments, the frame 200 and the molding 400 may also be made of non-metallic materials with high strength and rigidity, such as carbon fiber composites, glass fiber reinforced plastics, aramid fiber composites, polyimide, polyetheretherketone, epoxy resin, polycarbonate, graphene reinforced composites, etc.

[0072] The present invention also proposes a display device, which includes an infrared touch screen 10. The specific structure of the infrared touch screen 10 refers to the above embodiment. Since the present display device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0073] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An infrared touch screen, characterized in that: include: A display module having a first surface and a second surface opposite to each other, and a peripheral side surface connecting the first surface and the second surface; a frame, arranged around the periphery of the display module, the frame being integrally formed and including a main body and end portions disposed at both ends of the main body in its extending direction, the main body being bent along the contour of the peripheral side surface to form a plurality of side portions, and a splicing line formed by connecting two of the end portions being located at one of the side portions; as well as The infrared module is disposed in the frame and can emit infrared rays toward the first surface.

2. The infrared touch screen according to claim 1, wherein: The length of the side portion where the splicing line is located is a, and the distance from the splicing line to any end of the corresponding side portion is L, and a / 4≤L≤3a / 4.

3. The infrared touch screen according to claim 1, wherein: The frame includes a frame end wall, a frame inner side wall arranged on the outside of the frame end wall, and a frame outer side wall arranged on the inside of the frame end wall. The frame end wall, the frame inner side wall and the frame outer side wall jointly define a accommodating cavity. The infrared module is arranged in the accommodating cavity. The infrared touch screen also includes a pressure strip connected to the frame, and the pressure strip is pressed against the infrared module.

4. The infrared touch screen according to claim 3, wherein: The infrared module includes a circuit board and a light-emitting unit arranged on the circuit board. One side of the pressure strip is connected to the second surface, and the other side abuts the circuit board. The pressure strip and the outer side wall of the frame are separated to form a light output channel. The infrared touch screen also includes a filter strip arranged in the light output channel. The filter strip protrudes from the first surface so that the infrared rays of the light-emitting unit can be emitted from the filter strip to the outside of the first surface.

5. The infrared touch screen according to claim 4, wherein: A mounting flange is extended inward from a side edge of the outer side wall of the frame away from the frame end wall, and the filter strip abuts against the mounting flange and the pressure strip respectively.

6. The infrared touch screen according to claim 5, characterized in that: The distance between the mounting flange and the first surface is H, 1.5 mm ≤ H ≤ 2.5 mm; And / or, the distance between the mounting flange and the side of the frame outer wall away from the frame inner wall is D, and 3 mm ≤ D ≤ 5 mm.

7. The infrared touch screen according to claim 5, wherein: The two ends are connected by welding and formed by a polishing process; And / or, the outer side wall of the frame is connected to at least one frame end wall and at least one mounting flange at each side portion, and two adjacent frame end walls are connected by welding at the bending portion of the outer side wall of the frame and are formed by a polishing process, and / or, two adjacent mounting flanges are connected by welding at the bending portion of the outer side wall of the frame and are formed by a polishing process.

8. The infrared touch screen according to claim 3, wherein: The pressure strip is fixed to the inner side wall of the frame by screws; And / or, one of the pressure strip and the inner side wall of the frame is provided with a positioning protrusion, and the other is provided with a positioning groove, and the positioning protrusion is positioned and clamped in the positioning groove.

9. The infrared touch screen according to claim 3, wherein: The frame and the pressure strip are made of metal.

10. A display device, characterized in that: It comprises the infrared touch screen as described in any one of claims 1 to 9.

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