Touch sensing assembly and touch sensing device

Abstract

The utility model provides a touch sensing assembly and touch sensing equipment. The touch sensing device comprises a touch panel with a defined touch surface, and the touch sensing assembly comprises a light-emitting unit, a first optical component and at least two camera shooting units. The light emitting unit is configured to emit infrared light; the first optical component is configured to reflect and guide the infrared light emitted by the light emitting unit to the touch surface; the view field range of each camera shooting unit at least partially covers the touch surface, each camera shooting unit is used for acquiring an infrared light imaging pattern of a touch object acting on the touch surface, and the infrared light imaging pattern of the touch object on the touch surface is used for determining corresponding touch information of the touch object on the touch surface. Due to the arrangement of the first optical component, the light-emitting unit does not need to be arranged on the front face of the touch panel, in this way, the situation that the light-emitting unit obviously protrudes out of the front face of the touch panel can be improved, and the size of the front face part of the frame can be reduced.

Description

Technical Field

[0001] This application relates to the field of touch technology, and in particular to a touch sensing component and a touch sensing device. Background Technology

[0002] Optical touch technology is a type of touch control technology. Touch sensing devices using optical touch technology are typically equipped with a camera unit and a light-emitting unit. The light-emitting unit emits infrared light onto the touch surface of the touch panel, and the camera unit acquires an infrared image pattern of the object being touched. Touch information, such as the coordinates of the object, can be obtained from this infrared image pattern.

[0003] Some touch sensing devices employing optical touch technology have their light-emitting units located on the back of the touch panel, comprising an array of light-emitting devices. The infrared light emitted by these devices can pass through the touch panel. This arrangement requires a large number of light-emitting devices, resulting in higher manufacturing costs. Other touch sensing devices place the light-emitting units on the periphery of the touch surface, on the front of the touch panel. This arrangement saves costs; however, the light-emitting units protrude significantly from the touch panel. Furthermore, since the light-emitting units are typically located on the bezel of the touch sensing device, the bezel needs to provide installation space, leading to a wider front portion of the bezel. These issues all affect the aesthetics of the touch sensing device, thus impacting the user experience. Utility Model Content

[0004] This application provides a touch sensing component and a touch sensing device, which aims to improve the problems of the light-emitting unit protruding significantly from the touch panel and the large size of the front part of the bezel while taking into account manufacturing costs.

[0005] The specific technical solution is as follows:

[0006] One embodiment of this application provides a touch sensing component applied to a touch sensing device, the touch sensing device including a touch panel defining a touch surface, the touch sensing component including a light-emitting unit, a first optical component, and at least two camera units; the light-emitting unit is configured to emit infrared light; the first optical component is configured to reflect and guide the infrared light emitted by the light-emitting unit to the touch surface; the field of view of each camera unit at least partially covers the touch surface, and each camera unit is used to acquire an infrared light imaging pattern of a touch object acting on the touch surface, wherein the infrared light imaging pattern of the touch object on the touch surface is used to determine touch information corresponding to the touch object on the touch surface.

[0007] The touch sensing component in this embodiment includes a first optical component configured to reflect and guide infrared light emitted by the light-emitting unit to the touch surface of the touch panel. The placement of the first optical component can alter the transmission path of the infrared light emitted by the light-emitting unit, allowing for more flexible placement of the light-emitting unit. This eliminates the need for the light-emitting unit to be located on the front of the touch panel, thus improving the situation in related technologies where the light-emitting unit protrudes significantly from the front of the touch panel. Furthermore, by not placing the light-emitting unit on the front of the touch panel, it does not occupy space on the front bezel, which helps reduce the size of the front bezel area. This improves the aesthetics of the touch sensing device and enhances the user experience.

[0008] In some embodiments, the first optical component includes a first light guide element, the first light guide element including a first surface, a second surface and a first reflective surface, the first light guide element being configured to receive infrared light emitted from the light-emitting unit through the first surface, reflect the infrared light in the first light guide element to the second surface through the first reflective surface, and output the infrared light in the first light guide element to the touch surface through the second surface.

[0009] The first light guide element includes a first surface, a second surface, and a first reflective surface. The first surface is the light-incident surface of the first light guide element, and the second surface is the light-exit surface. Infrared light emitted by the light-emitting unit enters the first light guide element through the first surface. The first reflective surface reflects the infrared light entering the first light guide element to the second surface, and the second surface then outputs the infrared light from the first light guide element to the touch surface. Thus, the first light guide element can reflect and guide the infrared light emitted by the light-emitting unit to the touch surface. Furthermore, since the first light guide element is located in front of the light-emitting unit, it also protects the light-emitting unit from dust, water droplets, and other foreign objects.

[0010] In some of these embodiments, the second surface is diffusely transmissive.

[0011] This increases the emission angle and uniformity of infrared light output through the first light guide element, thus enabling infrared light to cover the touch surface even when the touch panel is uneven or the positional accuracy of the touch panel is poor due to assembly tolerances.

[0012] In some of these embodiments, the first reflective surface is specularly reflective.

[0013] This configuration allows the infrared light entering the first light guide element to be output through the second surface in a more concentrated manner, which is beneficial to improving light utilization.

[0014] In some of these embodiments, the first reflective surface is diffusely reflective or partially diffusely reflective.

[0015] With this configuration, the infrared light reflected at the first reflective surface has the effect of diffuse reflection or partial diffuse reflection, thereby improving the emission angle and uniformity of the infrared light output through the first light guide element.

[0016] In some of these embodiments, the first reflective surface is coated with a high refractive index coating.

[0017] In this way, the infrared light reflected at the first reflective surface also has a diffuse reflection effect, thereby improving the emission angle and uniformity of the infrared light output through the first light guide element.

[0018] In some embodiments, the touch sensing component further includes a frame element to which the light-emitting unit, the first optical component, and the at least two camera units are fixed.

[0019] Fixing the light-emitting unit, the first optical component, and the camera unit onto the frame element helps maintain a relatively stable positional relationship between them, thereby improving the working stability of the touch sensing component.

[0020] In some embodiments, the touch sensing component further includes a frame element, the first optical component being a first light guide portion disposed on the frame element, the first light guide portion including a first reflective surface configured to reflect and guide infrared light emitted by the light-emitting unit to the touch surface.

[0021] In other words, the first light guide with the first reflective surface can be part of the frame element, or a first light guide with the first reflective surface can be attached to the frame element, thereby integrating the first reflective surface into the frame element. This helps to reduce the number of parts in the touch sensing component, thus saving costs.

[0022] In some embodiments, the first reflective surface is etched metal, sprayed metal, beaded metal, or brushed metal to increase surface roughness in order to diffusely reflect the infrared light.

[0023] This increases the emission angle and uniformity of infrared light output through the first reflective surface, thus enabling infrared light to cover the touch surface even when the touch panel is uneven or the positional accuracy of the touch panel is poor due to assembly tolerances.

[0024] In some embodiments, the touch sensing component further includes a second optical component configured to receive infrared light reflected by the touched object and to reflect and guide the infrared light reflected by the touched object to the camera unit.

[0025] The placement of the second optical component alters the optical transmission path between the infrared light reflected from the touched object and the camera unit. This allows for greater flexibility in the camera unit's placement, meaning it doesn't necessarily need to be located on the front of the touch panel. For example, the camera unit can be positioned on the side of the touch panel away from the touch surface, i.e., the back side of the touch panel. This avoids the issue of the camera unit protruding significantly from the front of the touch panel in related technologies, thereby improving the aesthetics of the touch sensing device. Furthermore, placing the camera unit on the back side of the touch panel makes it less susceptible to impacts and water damage, thus reducing the risk of damage and enhancing its operational stability.

[0026] In some embodiments, the second optical component includes a second light guide element, the second light guide element including a third surface, a fourth surface and a second reflective surface, the second optical component being configured to receive infrared light reflected by the touched object through the third surface, reflect the infrared light in the second light guide element to the fourth surface through the second reflective surface, and output the infrared light in the second light guide element to the camera unit through the fourth surface.

[0027] The second light guide element includes a third surface, a fourth surface, and a second reflective surface. The third surface is the light-incident surface of the second light guide element, and the fourth surface is the light-outceasing surface. Infrared light reflected by the touched object enters the second light guide element through the third surface. The second reflective surface reflects the infrared light into the second light guide element to the fourth surface, and the infrared light from the second light guide element is then output to the camera unit through the fourth surface. This allows the second light guide element to guide the infrared light reflected by the touched object to the camera unit.

[0028] In some embodiments, the touch sensing component further includes a frame element, and the second optical component is a second light guide portion disposed on the frame element. The second light guide portion includes a second reflective surface configured to receive infrared light reflected by the touch object and guide the infrared light reflected by the touch object to the camera unit.

[0029] In other words, the second light guide with the second reflective surface can be part of the frame element, or a second light guide with the second reflective surface can be attached to the frame element, thereby integrating the second reflective surface into the frame element. This helps to reduce the number of parts in the touch sensing component, thus saving costs.

[0030] Another aspect of this application provides a touch sensing device, the touch sensing device including: a touch panel; and the touch sensing component of any of the above embodiments.

[0031] The touch sensing device in this application embodiment is based on the same inventive concept as the touch sensing component described above. Therefore, the touch sensing device can obtain the beneficial effects of the touch sensing component in the corresponding embodiment described above.

[0032] In some embodiments, the light-emitting unit is located on the side of the touch panel opposite to the touch surface.

[0033] This improves the aesthetics of touch sensing devices by addressing the issue of light-emitting units protruding significantly from the front of the touch panel in related technologies. Furthermore, positioning the light-emitting unit on the side of the touch panel away from the touch surface makes it less susceptible to impacts, water damage, and other issues, thus reducing the risk of damage and enhancing its operational stability.

[0034] In some embodiments, the touch panel includes a display panel, the display surface of which defines the touch surface. For some touch sensing devices that include a display panel and have display functionality, the display surface of the display panel can be formed as a touch surface. Thus, the touch sensing device 1 simultaneously possesses display and touch functionality.

[0035] In some embodiments, the touch panel includes a display panel and a glass cover, with the touch surface formed on the side of the glass cover away from the display panel. For some touch sensing devices that include a display panel and a glass cover, the side of the glass cover away from the display panel can be formed as the touch surface. This allows the touch sensing device to simultaneously possess display and touch functionality.

[0036] Another aspect of this application provides a touch sensing device, which includes: a touch panel; and touch sensing components as described in some of the above embodiments; wherein the touch panel includes a display panel and a glass cover, the glass cover is located on one side of the display panel, the light-emitting unit is located on the same side of the glass cover as the display panel, at least a portion of a first reflective surface is located on a different side of the glass cover along a first direction from the light-emitting unit, the light-emitting unit includes a circuit board and a light-emitting device disposed on the circuit board, the orthographic projection of the light-emitting device along the first direction is located outside the glass cover, and the first direction is parallel to the thickness direction of the glass cover.

[0037] In the case of a touch panel including a display panel and a glass cover, the orthographic projection of the light-emitting device along the first direction is located outside the glass cover. In this way, the infrared light emitted by the light-emitting device reaches the first reflective surface without passing through the glass cover, which helps to reduce light energy loss.

[0038] Another aspect of this application provides a touch sensing device, which includes:

[0039] A touch panel; and a touch sensing component in some of the above embodiments; wherein the touch panel includes a display panel and a glass cover, the glass cover being located on one side of the display panel, the light-emitting unit being located on the same side of the glass cover as the display panel, at least a portion of the first reflective surface being located on a different side of the glass cover along a first direction from the light-emitting unit, an ink layer being provided on the edge region of the glass cover, the light-emitting unit including a circuit board and a light-emitting device disposed on the circuit board; the orthographic projection of the light-emitting device along the first direction being located inside the glass cover and outside the ink layer, or the orthographic projection of the light-emitting device along the first direction being located inside the ink layer, and the ink layer being an infrared-transmitting ink layer, the first direction being parallel to the thickness direction of the glass cover.

[0040] Typically, an ink layer is formed on the edge area of ​​a glass cover plate. The function of this ink layer is to shield the structures on the back side of the glass cover plate's edge area, making these structures invisible to the user. In this embodiment, the orthographic projection of the light-emitting device along a first direction can be located inside the glass cover plate and outside the ink layer (for example, a cutout is provided in the ink layer, and the light-emitting device is opposite to the cutout along the first direction). This arrangement allows the infrared light emitted by the light-emitting device to pass through the glass cover plate and reach the first reflective surface without being affected by the ink layer. This arrangement helps to reduce the size of the portion of the frame element extending beyond the glass cover plate, thereby reducing the bezel size of the touch sensing device 1. Alternatively, the ink layer on the glass cover plate can be an infrared-transmitting ink layer. This allows the infrared light emitted by the light-emitting device to pass through the infrared-transmitting ink layer on the glass cover plate and reach the first reflective surface. Similarly, this arrangement helps to reduce the size of the portion of the frame element extending beyond the glass cover plate, thereby reducing the bezel size of the touch sensing device 1.

[0041] Another aspect of this application provides a touch sensing device, comprising: a touch panel; and touch sensing components as described in some of the above embodiments; wherein the touch panel includes a display panel and a glass cover, the glass cover being located on one side of the display panel, the camera unit being located on the same side of the glass cover as the display panel, at least a portion of the second reflective surface being located on a different side of the glass cover along a first direction from the camera unit; the orthographic projection of the light-incident side of the camera unit along the first direction is located outside the glass cover, the first direction being parallel to the thickness direction of the glass cover.

[0042] With this configuration, the infrared light reflected from the touched object reaches the camera unit without passing through the glass cover, which helps to improve the effect of infrared imaging and thus improves the accuracy of optical touch. Attached Figure Description

[0043] Figure 1 This is a schematic diagram of a touch sensing device provided in an embodiment of this application;

[0044] Figure 2 for Figure 1 Schematic diagram of section AA;

[0045] Figure 3 This is a cross-sectional schematic diagram of a touch sensing device provided in another embodiment of this application;

[0046] Figure 4 This is a cross-sectional schematic diagram of a touch sensing device provided in another embodiment of this application;

[0047] Figure 5 This is a cross-sectional schematic diagram of a touch sensing device provided in another embodiment of this application;

[0048] Figure 6 A schematic diagram of a touch sensing device provided in another embodiment of this application;

[0049] Figure 7 for Figure 6 Schematic diagram of the BB section;

[0050] Figure 8 This is a cross-sectional schematic diagram of a touch sensing device provided in another embodiment of this application;

[0051] Figure 9a The image shows the intensity distribution of infrared light when the first reflecting surface is a specular reflector.

[0052] Figure 9b This is a diagram showing the intensity distribution of infrared light when the first reflecting surface is diffuse reflection.

[0053] Explanation of reference numerals in the attached figures:

[0054] 1. Touch sensing devices;

[0055] 100. Touch sensing components;

[0056] 10. Light-emitting unit; 11. Circuit board; 12. Light-emitting device;

[0057] 20. First optical component; 21. First light guide element; 22. First surface; 23. Second surface; 24. First reflective surface; 25. First light guiding part;

[0058] 30. Camera unit;

[0059] 40. Frame element; 41. Receiving cavity; 411. First limiting groove; 412. Limiting step; 42. Light outlet;

[0060] 50. Second optical component; 51. Second light guide element; 52. Third surface; 53. Fourth surface; 54. Second reflective surface; 55. Second light guiding part;

[0061] 200. Touch panel; 210. Touch surface; 220. Display panel; 230. Glass cover;

[0062] 300. Light-absorbing element;

[0063] 400. Border. Detailed Implementation

[0064] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0065] In the description of this application, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this application. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0066] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as implying or suggesting relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0067] In the description of this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0068] Optical touch technology is a type of touch control technology. Touch sensing devices using optical touch technology are typically equipped with a camera unit and a light-emitting unit. The light-emitting unit emits infrared light onto the touch surface of the touch panel, and the camera unit acquires an infrared image pattern of the object being touched. Touch information, such as the coordinates of the object, can be obtained from this infrared image pattern.

[0069] Some touch sensing devices employing optical touch technology in related technologies have light-emitting units located on the back side of the touch panel, including an array of light-emitting devices. The infrared light emitted by these devices can pass through the touch panel. This arrangement requires a large number of light-emitting devices, resulting in high manufacturing costs. Other touch sensing devices place the light-emitting units on the periphery of the touch surface, located on the front of the touch panel. This arrangement saves costs; however, the light-emitting units protrude significantly from the touch panel. Furthermore, since the light-emitting units are typically located on the edge of the touch sensing device, the edge needs to provide installation space for the units, leading to a larger width of the front portion of the edge (the part visible to the user). These issues affect the aesthetics of the touch sensing device, thus impacting the user experience. Based on the above, the applicant of this application proposes a technical solution in the embodiments of this application. Specifically, the touch sensing component includes a first optical component configured to reflect and guide the infrared light emitted by the light-emitting unit to the touch surface of the touch panel. The arrangement of the first optical component can alter the transmission path of the infrared light emitted by the light-emitting unit, allowing for more flexible placement of the unit. This eliminates the need for the light-emitting unit to be located on the front of the touch panel, thus mitigating the issue of the light-emitting unit protruding significantly from the front of the touch panel in related technologies. Furthermore, by not placing the light-emitting unit on the front of the touch panel, it does not occupy space on the front bezel, which helps reduce the size of that area. This improves the aesthetics of the touch-sensing device, thereby enhancing the user experience.

[0070] The above is the core idea of ​​this application. The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0071] like Figure 1 , Figure 2As shown, this application embodiment provides a touch sensing component 100, applied to a touch sensing device 1, which includes a touch panel 200 defining a touch surface 210. The touch sensing component 100 includes a light-emitting unit 10, a first optical component 20, and at least two camera units 30. The light-emitting unit 10 is configured to emit infrared light, and the first optical component 20 is configured to reflect and guide the infrared light emitted by the light-emitting unit 10 to the touch surface 210. The field of view of each camera unit 30 at least partially covers the touch surface 210, and each camera unit 30 is used to acquire an infrared light imaging pattern of a touch object acting on the touch surface 210, wherein the infrared light imaging pattern of the touch object on the touch surface 210 is used to determine the touch information corresponding to the touch object on the touch surface 210.

[0072] Specifically, the touch sensing device 1 is a touch sensing device based on optical touch technology. For example, it can be a commercial display terminal, monitor, television, conference tablet, educational blackboard, electronic whiteboard, etc. Among them, for some products with display functions, such as monitors and televisions, the touch surface 210 can be the display surface of the display panel, or it can be other surfaces besides the display surface, such as the outer surface of the glass cover covering the display panel, the writing surface of the secondary screen of the educational blackboard, etc.

[0073] The touch object is an object used to perform touch operations on the touch sensing device 1. It can be a human hand or a pen, or other specific objects.

[0074] The camera unit 30 is used to acquire infrared light imaging patterns. It may include an optical lens and any type of photosensitive element (e.g., CCD photosensitive element, CMOS photosensitive element, etc.). The optical lens includes at least one lens. An infrared coating may be provided on the optical lens to filter out light other than infrared light, thereby reducing interference and ensuring the quality of infrared imaging. The camera unit 30 may be disposed on the outer periphery of the touch surface 210. For example, for some products with display functions, the camera unit 30 may be disposed in the peripheral area of ​​the display surface of the display panel. If the display surface of the display panel has a black border, the camera unit 30 may be disposed outside the black border (away from the periphery of the display surface) or inside the black border (projected along the first direction, at least partially within the black border). The touch panel 200 includes a display panel 220 and a glass cover 230. The glass cover 230 has a black border. The camera unit 30 can be positioned outside the black border (away from the display surface) or inside the black border (projected along the first direction, at least partially within the black border). Alternatively, for products without a display function, such as a secondary screen on an educational blackboard, the camera unit 30 can be positioned in the outer area of ​​its writing surface. This allows the camera unit 30 to avoid the touch surface 210, while also maximizing the field of view of the camera unit 30 to cover the touch surface 210.

[0075] When the touch sensing component 100 is working, the light-emitting unit 10 emits infrared light, and the first optical component 20 reflects and guides the infrared light emitted by the emitting unit to the touch surface 210 of the touch panel 200. When a touch object is applied to the touch surface 210 of the touch panel 200, each camera unit 30 acquires an infrared light imaging pattern of the touch object. The touch information of the touch object can be determined by the infrared light imaging patterns acquired by each camera unit 30. The touch information may include the coordinates, type, and touch area of ​​the touch object on the touch surface 210.

[0076] The light-emitting unit 10 can be elongated and extend along the length or width direction of the touch sensing component 100. The number of light-emitting units 10 can be set according to usage requirements; that is, there can be one or more light-emitting units 10 in the touch sensing device 1. When multiple light-emitting units 10 are provided in the touch sensing device 1, the multiple light-emitting units 10 can be distributed on different sides of the touch sensing device 1 or disposed on the same side of the touch sensing device 1. In addition, the light-emitting unit 10 and the camera unit 30 can be separate or connected together to form an integrated optical module.

[0077] The touch sensing component 100 in this embodiment includes a first optical component 20. The first optical component 20 is configured to reflect and guide the infrared light emitted by the light-emitting unit 10 to the touch surface 210 of the touch panel 200. The arrangement of the first optical component 20 can change the transmission path of the infrared light emitted by the light-emitting unit 10, thus allowing for more flexible placement of the light-emitting unit 10. This eliminates the need for the light-emitting unit 10 to be located on the front of the touch panel 200, thereby improving the situation in related technologies where the light-emitting unit 10 protrudes significantly from the front of the touch panel 200. Furthermore, when the light-emitting unit 10 is not located on the front of the touch panel 200, it does not occupy space on the front of the bezel, which helps to reduce the size of the front of the bezel. This improves the aesthetics of the touch sensing device 1, thereby enhancing the user experience.

[0078] like Figure 2 As shown, in some embodiments, the first optical component 20 includes a first light guide element 21, which includes a first surface 22, a second surface 23, and a first reflective surface 24. The first light guide element 21 is configured to receive infrared light emitted from the light-emitting unit 10 through the first surface 22, reflect the infrared light in the first light guide element 21 to the second surface 23 through the first reflective surface 24, and output the infrared light in the first light guide element 21 to the touch surface 210 through the second surface 23.

[0079] For example, the first light guide element 21 can be a filter strip that is transparent to infrared light but not transparent to visible light. In addition to reflecting and guiding infrared light, it can also filter out light other than infrared light to reduce interference.

[0080] The first light guide element 21 includes a first surface 22, a second surface 23, and a first reflective surface 24. The first surface 22 is the light-incident surface of the first light guide element 21, and the second surface 23 is the light-emitting surface. Infrared light emitted by the light-emitting unit 10 enters the first light guide element 21 through the first surface 22. The first reflective surface 24 reflects the infrared light entering the first light guide element 21 to the second surface 23, and then outputs the infrared light from the first light guide element 21 to the touch surface 210 through the second surface 23. Thus, the first light guide element 21 can reflect and guide the infrared light emitted by the light-emitting unit 10 to the touch surface 210. Furthermore, since the first light guide element 21 is located in front of the light-emitting unit 10, it also protects the light-emitting unit 10, preventing dust, water droplets, and other foreign objects from contacting it.

[0081] Furthermore, the angle between the first reflective surface 24 and the touch surface 210 can be less than or equal to 70°. If the angle is too large, it will cause a significant difference in the distance of infrared light from various positions on the front of the touch panel 200 to the surface of the touch panel 200, resulting in inconsistent touch heights at different positions on the touch panel 200, which affects the user experience. Touch height refers to the maximum distance between the object being touched and the surface of the touch panel when the user can perform an effective touch operation. Therefore, setting the angle between the first reflective surface 24 and the touch surface 210 to less than or equal to 70°, for example, setting the angle between the first reflective surface 24 and the touch surface 210 to 45°, helps to avoid the aforementioned inconsistent touch heights.

[0082] In one specific embodiment, the second surface 23 is diffusely transmissive. For example, scattering particles or convex bulges can be provided on the second surface 23 to form diffuse transmission when infrared light passes through the second surface 23.

[0083] This increases the emission angle and uniformity of the infrared light output through the first light guide element 21. Thus, even if the touch panel 200 is uneven or the positional accuracy of the touch panel 200 is poor due to assembly tolerances, infrared light can still cover the touch surface 210.

[0084] In one specific embodiment, the first reflective surface 24 is specularly reflective. This configuration allows the infrared light entering the first light guide element 21 to be output more concentratedly through the second surface 23, which is beneficial for improving light utilization.

[0085] The first reflective surface 24 can be constructed as a plane or as a convex surface. When the first reflective surface 24 is constructed as a convex surface, the reflected infrared light has a diffusion effect, and even if the touch panel 200 is uneven or the positional accuracy of the touch panel 200 is poor due to assembly tolerances, the infrared light can still cover the touch surface 210.

[0086] In one specific embodiment, the first reflective surface 24 is diffusely reflective or partially diffusely reflective. With this configuration, the infrared light reflected at the first reflective surface 24 has the effect of diffuse or partially diffuse reflection, thereby improving the emission angle and uniformity of the infrared light output through the first light guide element 21.

[0087] Figure 9a The image shows the intensity distribution of infrared light when the first reflecting surface is a specular reflector. Figure 9b This is a diagram showing the intensity distribution of infrared light when the first reflecting surface is diffuse reflection. The comparison shows that when the first reflecting surface is diffuse reflection, the infrared light is distributed more widely and more uniformly on the touch surface.

[0088] In one specific embodiment, the first reflective surface 24 is coated with a high refractive index coating. In this way, the infrared light reflected at the first reflective surface 24 also has a diffuse reflection effect, thereby improving the emission angle and uniformity of the infrared light output through the first light guide element 21.

[0089] like Figure 1 , Figure 2 As shown, in a specific embodiment, the touch sensing component 100 further includes a frame element 40, a light-emitting unit 10, a first optical component 20, and at least two camera units 30 fixed to the frame element 40.

[0090] Fixing the light-emitting unit 10, the first optical component 20, and the camera unit 30 onto the frame element 40 helps maintain a relatively stable positional relationship between the light-emitting unit 10, the first optical component 20, and the camera unit 30, thereby improving the working stability of the touch sensing component 100.

[0091] It is understandable that the touch sensing device 1 typically has a border, and the frame element 40 can be the border of the touch sensing device 1 (see reference). Figure 2 It can also be a structure independent of the 400mm border (please refer to...). Figure 4 ).

[0092] The touch sensing device 1 may have four borders. When the frame element 40 serves as the border of the touch sensing device 1, the light-emitting unit 10 may be fixed to one of the four borders. In some cases, the light-emitting unit 10 may be mounted on two separate borders, for example, when the touch sensing device 1 is large and more light-emitting units 10 are needed to provide infrared light. The camera unit 30 may be fixed at the position where two adjacent borders connect, i.e., at the corner of the touch sensing device 1.

[0093] When the frame element 40 is a structure independent of the frame 400, the frame element 40 can be assembled onto the frame 400 of the touch sensing device 1, for example, by fixing it to the frame of the television with bolts or adhesive. In this way, the television can realize touch function through the light-emitting unit 10, the camera unit 30 and the corresponding control program.

[0094] like Figure 3 As shown, in some other embodiments, the touch sensing component 100 further includes a frame element 40, and the first optical component 20 is a first light guide portion 25 disposed on the frame element 40. The first light guide portion 25 includes a first reflective surface 24, which is configured to reflect and guide the infrared light emitted by the light-emitting unit 10 to the touch surface 210.

[0095] In other words, the first light guide portion 25 having the first reflective surface 24 can be part of the frame element 40, or a first light guide portion 25 having the first reflective surface 24 can be attached to the frame element 40, thereby integrating the first reflective surface 24 into the frame element 40. This helps to reduce the number of parts in the touch sensing component 100, thereby saving costs.

[0096] The first reflective surface 24 can be constructed as a plane or as a convex surface. When the first reflective surface 24 is constructed as a convex surface, the reflected infrared light has a diffusion effect, and even if the touch panel 200 is uneven or the positional accuracy of the touch panel 200 is poor due to assembly tolerances, the infrared light can still cover the touch surface 210.

[0097] In one specific embodiment, the first reflective surface 24 is etched metal, sprayed metal, beaded metal, or brushed metal, used to increase surface roughness to diffusely reflect the infrared light emitted by the light-emitting unit 10. This increases the emission angle and uniformity of the infrared light output through the first reflective surface 24, thus enabling infrared light to cover the touch surface 210 even when the touch panel 200 is uneven or its positional accuracy is poor due to assembly tolerances.

[0098] Furthermore, the angle between the first reflective surface 24 and the touch surface 210 can be less than or equal to 70°. If the angle is too large, it will cause a significant difference in the distance of infrared light from various positions on the front of the touch panel 200 to the surface of the touch panel 200, resulting in inconsistent touch heights at different positions on the touch panel 200, which affects the user experience. Touch height refers to the maximum distance between the object being touched and the surface of the touch panel when the user can perform an effective touch operation. Therefore, setting the angle between the first reflective surface 24 and the touch surface 210 to less than or equal to 70°, for example, setting the angle between the first reflective surface 24 and the touch surface 210 to 45°, helps to avoid the aforementioned inconsistent touch heights.

[0099] like Figure 6 , Figure 7 as well as Figure 8 As shown, in some embodiments, the touch sensing component 100 further includes a second optical component 50, which is configured to receive infrared light reflected by the touched object and guide the reflected infrared light to the camera unit 30. The arrangement of the second optical component 50 can change the optical transmission path between the infrared light reflected by the touched object and the camera unit 30, thus allowing for more flexible placement of the camera unit 30. Based on this, the camera unit 30 does not need to be located on the front of the touch panel 200. For example, the camera unit 30 can be located on the side of the touch panel 200 opposite to the touch surface 210, i.e., the back side of the touch panel 200. This improves the situation where the camera unit 30 protrudes significantly from the front of the touch panel 200 in related technologies. Furthermore, when the camera unit 30 is not located on the front of the touch panel 200, it does not occupy space on the front of the bezel, which helps to reduce the size of the front of the bezel. Therefore, the aesthetics of the touch sensing device 1 can be improved, thereby enhancing the user experience.

[0100] In addition, placing the camera unit 30 on the back side of the touch panel 200 makes the camera unit 30 less susceptible to bumps, water damage, and other issues, thus preventing damage and giving the camera unit 30 better operational stability.

[0101] like Figure 7As shown, in some embodiments, the second optical component 50 includes a second light guide element 51, which includes a third surface 52, a fourth surface 53, and a second reflective surface 54. The second optical component 50 is configured to receive infrared light reflected by the touched object through the third surface 52, reflect the infrared light from the second light guide element 51 to the fourth surface 53 through the second reflective surface 54, and output the infrared light from the second light guide element 51 to the camera unit 30 through the fourth surface 53. In this way, the camera unit 30 can acquire an infrared imaging pattern of the touched object acting on the touch surface 210, so that the touch sensing device 1 can determine the touch information corresponding to the touched object on the touch surface 210.

[0102] For example, the second light guide element 51 may be a prism, such as a right-angle prism.

[0103] The second light guide element 51 includes a third surface 52, a fourth surface 53, and a second reflective surface 54. The third surface 52 is the light-incident surface of the second light guide element 51, and the fourth surface 53 is the light-outceasing surface. Infrared light reflected by the touched object enters the second light guide element 51 through the third surface 52. The second reflective surface 54 reflects the infrared light entering the second light guide element 51 to the fourth surface 53, and then outputs the infrared light from the second light guide element 51 to the camera unit 30 through the fourth surface 53. Thus, the second light guide element 51 can guide the infrared light reflected by the touched object to the camera unit 30.

[0104] Understandable Figure 7 The image unit 30 and the second light guide element 51 are only schematic diagrams. In practical applications, to improve optical accuracy, the image unit 30 and the second light guide element 51 can be connected together to form an optical component. Alternatively, they can be positioned relative to each other using other structures to ensure their relative positional accuracy.

[0105] Furthermore, the touch sensing assembly 100 includes a frame element 40, and the second light guide element 51 is fixed to the frame element 40. This helps to improve the positional stability of the second light guide element 51 in the touch sensing assembly 100.

[0106] like Figure 8 As shown, in some other embodiments, the touch sensing component 100 further includes a frame element 40, and the second optical component 50 is a second light guide portion 55 disposed on the frame element 40. The second light guide portion 55 includes a second reflective surface 54, which is configured to receive infrared light reflected by the touch object and guide the infrared light reflected by the touch object to the camera unit 30.

[0107] In other words, the second light guide portion 55 having the second reflective surface 54 can be part of the frame element 40, or a second light guide portion 55 having the second reflective surface 54 can be attached to the frame element 40, thereby integrating the second reflective surface 54 into the frame element 40. This helps to reduce the number of parts in the touch sensing assembly 100, thereby saving costs.

[0108] like Figure 1 , Figure 2 as well as Figure 3 As shown, an embodiment of the second aspect of this application provides a touch sensing device 1. The sensing device includes a touch panel 200 and a touch sensing component 100 as described in any of the above embodiments. The touch panel 200 defines a touch surface 210. A light-emitting unit 10 is configured to emit infrared light, and a first optical component 20 is configured to reflect and guide the infrared light emitted by the light-emitting unit 10 to the touch surface 210. Each camera unit 30 is used to acquire an infrared light imaging pattern of a touch object acting on the touch surface 210. The infrared light imaging pattern of the touch object on the touch surface 210 is used to determine the touch information corresponding to the touch object on the touch surface 210.

[0109] The touch sensing device 1 in this embodiment includes a touch sensing component 100 with a first optical component 20. The first optical component 20 is configured to reflect and guide the infrared light emitted by the light-emitting unit 10 to the touch surface 210 of the touch panel 200. The arrangement of the first optical component 20 can change the transmission path of the infrared light emitted by the light-emitting unit 10, thus allowing for more flexible placement of the light-emitting unit 10. This eliminates the need for the light-emitting unit 10 to be located on the front of the touch panel 200, thereby improving the situation in related technologies where the light-emitting unit 10 protrudes significantly from the front of the touch panel 200. Furthermore, when the light-emitting unit 10 is not located on the front of the touch panel 200, it does not occupy space on the front of the bezel, which helps to reduce the size of the front of the bezel. Therefore, the aesthetics of the touch sensing device 1 can be improved, thereby enhancing the user experience.

[0110] In some embodiments, the light-emitting unit 10 is located on the side of the touch panel 200 opposite to the touch surface 210. This improves the situation in related technologies where the light-emitting unit 10 protrudes significantly from the front of the touch panel 200. Furthermore, the light-emitting unit 10 does not occupy space on the front of the bezel, thus reducing the size of the front of the bezel and improving the aesthetics of the touch sensing device 1. Moreover, the location of the light-emitting unit 10 on the side of the touch panel 200 opposite to the touch surface 210 also makes the light-emitting unit 10 less susceptible to impacts, water damage, etc., thus reducing its risk of damage and providing better operational stability.

[0111] In some embodiments, the touch panel 200 includes a display panel 220, the display surface of which defines a touch surface 210. For some touch sensing devices 1 that include a display panel 220 and have display functionality, the display surface of the display panel 220 can be formed as the touch surface 210. Examples include displays and similar products. Thus, the touch sensing device 1 simultaneously possesses display and touch functionality.

[0112] In some embodiments, the touch panel 200 includes a display panel 220 and a glass cover 230, with a touch surface 210 formed on the side of the glass cover 230 away from the display panel 220. For some touch sensing devices 1 that include a display panel 220 and a glass cover 230, the side of the glass cover 230 away from the display panel 220 can be formed as the touch surface 210. Examples include tablet computers. Thus, the touch sensing device 1 simultaneously possesses display and touch functions.

[0113] like Figure 3 As shown, in some embodiments, the touch panel 200 includes a display panel 220 and a glass cover 230. The glass cover 230 is located on one side of the display panel 220. The light-emitting unit 10 is located on the same side of the glass cover 230 as the display panel 220. At least a portion of the first reflective surface 24 is located on a different side of the glass cover 230 along a first direction from the light-emitting unit 10. The light-emitting unit 10 includes a circuit board 11 and a light-emitting device 12 disposed on the circuit board 11. The orthographic projection of the light-emitting device 12 along the first direction is located outside the glass cover 230 (see reference). Figure 3 The first direction is parallel to the thickness direction of the glass cover plate 230.

[0114] The glass cover 230 is used to protect the display panel 220, and the touch surface 210 is located on the side of the glass cover 230 away from the display panel 220.

[0115] In this embodiment, for the case where the touch panel 200 includes a display panel 220 and a glass cover plate 230, the orthographic projection of the light-emitting device 12 along the first direction is located outside the glass cover plate 230. In this way, the infrared light emitted by the light-emitting device 12 does not pass through the glass cover plate 230 and reaches the first reflective surface 24, which helps to reduce light energy loss.

[0116] like Figure 5As shown, in some other embodiments, the touch panel 200 includes a display panel 220 and a glass cover 230. The glass cover 230 is located on one side of the display panel 220, and the light-emitting unit 10 is located on the same side of the glass cover 230 as the display panel 220. At least a portion of the first reflective surface 24 is located on a different side of the glass cover 230 along a first direction from the light-emitting unit 10. The light-emitting unit 10 includes a circuit board 11 and a light-emitting device 12 disposed on the circuit board 11. The orthographic projection of the light-emitting device 12 along the first direction is located inside the glass cover 230 and outside the ink layer, or the orthographic projection of the light-emitting device 12 along the first direction is located inside the ink layer, and the ink layer is an infrared-transmitting ink layer. The first direction is parallel to the thickness direction of the glass cover 230.

[0117] Typically, an ink layer is formed on the edge area of ​​the glass cover plate 230. The function of the ink layer is to cover the structure on the back side of the edge area of ​​the glass cover plate 230, so that these structures are not visible to the user.

[0118] In this embodiment, the orthographic projection of the light-emitting device 12 along the first direction can be located within the glass cover plate 230 (see reference). Figure 5 And located outside the ink layer (for example, a cutout is provided in the ink layer, and the light-emitting device 12 is opposite to the cutout along the first direction). With this arrangement, the infrared light emitted by the light-emitting device 12 passes through the glass cover plate 230 and reaches the first reflective surface 24 without being affected by the ink layer. This arrangement helps to reduce the size of the portion of the frame element 40 that extends beyond the glass cover plate 230, thereby helping to reduce the bezel size of the touch sensing device.

[0119] Alternatively, the ink layer on the glass cover 230 can be an infrared-transmitting ink layer, so that the infrared light emitted by the light-emitting device 12 passes through the infrared-transmitting ink layer on the glass cover 230 and reaches the first reflective surface 24. Similarly, this arrangement helps to reduce the size of the portion of the frame element 40 that extends beyond the glass cover 230, thereby helping to reduce the bezel size of the touch sensing device 1.

[0120] like Figure 8 As shown, in some embodiments, the touch panel 200 includes a display panel 220 and a glass cover 230. The glass cover 230 is located on one side of the display panel 220, and the camera unit 30 is located on the same side of the glass cover 230 as the display panel 220. At least a portion of the second reflective surface 54 is located on a different side of the glass cover 230 along a first direction from the camera unit 30. The orthographic projection of the light-incident side of the camera unit 30 along the first direction is located outside the glass cover 230 (see reference). Figure 8The first direction is parallel to the thickness direction of the glass cover plate 230. With this configuration, the infrared light reflected by the touched object reaches the camera unit 30 without passing through the glass cover plate 230, which helps to improve the effect of infrared light imaging and thus improve the accuracy of optical touch.

[0121] In some embodiments, the frame element 40 has a receiving cavity 41 and a light-emitting port 42 communicating with the receiving cavity 41. The circuit board 11 is fixed in the receiving cavity 41, and the light-emitting device 12 is disposed opposite to the light-emitting port 42 along a first direction. The frame element 40 has a receiving cavity 41, and the circuit board 11 is fixed in the receiving cavity 41. Thus, while realizing the installation and connection between the light-emitting unit 10 and the frame element 40, the frame element 40 also protects the light-emitting unit 10.

[0122] In one specific embodiment, the inner wall of the receiving cavity 41 is provided with a first limiting groove 411 and a second limiting groove, which are arranged opposite to each other along a first direction. The two ends of the circuit board 11 are respectively located in the first limiting groove 411 and the second limiting groove. This arrangement can fix the circuit board 11 to the receiving cavity 41, thereby realizing the installation of the light-emitting unit 10 and the frame element 40.

[0123] like Figure 3 As shown, in another specific embodiment, the inner wall of the receiving cavity 41 is provided with a first limiting groove 411 and a limiting step 412. The first limiting groove 411 and the limiting step 412 are arranged opposite to each other along a first direction. The light outlet 42 is adjacent to the limiting step 412. One end of the circuit board 11 is located in the first limiting groove 411, and the other end of the circuit board 11 abuts against the limiting step 412.

[0124] This configuration serves two purposes: firstly, it allows for the fixation of the circuit board 11 and the receiving cavity 41, thereby facilitating the installation of the light-emitting unit 10 and the frame element 40. Secondly, the limiting step 412 has one less sidewall than the limiting groove. This allows for a closer distance between the light-emitting device 12 and the surface of the circuit board 11, while still meeting the positional requirements of the light-emitting device 12. Consequently, the dimensions of the light-emitting unit 10 and the receiving cavity 41 along the second direction (perpendicular to the first direction) can be relatively smaller, thus requiring less space.

[0125] like Figure 1 As shown, in some embodiments, the touch sensing device 1 further includes a light-absorbing element 300 disposed on the outer periphery of the touch surface 210. The light-absorbing element 300 can absorb part of the infrared light reflected by the first optical component 20, thus preventing the infrared light from being reflected by external objects such as tiles and metal to form interference light, thereby improving the accuracy of optical touch.

[0126] Understandably, the placement of the light-absorbing element 300 can be selected based on the usage environment. For example, when the floor in the usage environment is covered with high-brightness tiles, the light-absorbing element 300 can be placed below the touch surface 210. Similarly, if there are high-brightness reflective objects in other areas of the usage environment, the light-absorbing element 300 can be placed on the corresponding side of the touch surface 210.

[0127] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A touch sensing component (100) applied to a touch sensing device (1), the touch sensing device (1) including a touch panel (200) defining a touch surface (210), characterized in that, The touch sensing component (100) includes: A light-emitting unit (10) is configured to emit infrared light; A first optical component (20) configured to reflect and guide infrared light emitted by the light-emitting unit (10) to the touch surface (210); and At least two camera units (30) are provided, each of which has a field of view that at least partially covers the touch surface (210). Each camera unit (30) is used to acquire an infrared light imaging pattern of a touch object acting on the touch surface (210). The infrared light imaging pattern of the touch object on the touch surface (210) is used to determine the touch information corresponding to the touch object on the touch surface (210).

2. The touch sensing component (100) according to claim 1, characterized in that, The first optical component (20) includes a first light guide element (21), which includes a first surface (22), a second surface (23), and a first reflective surface (24). The first light guide element (21) is configured to receive infrared light emitted from the light-emitting unit (10) through the first surface (22), reflect the infrared light in the first light guide element (21) to the second surface (23) through the first reflective surface (24), and output the infrared light in the first light guide element (21) to the touch surface (210) through the second surface (23).

3. The touch sensing component (100) according to claim 2, characterized in that, The second surface (23) is diffusely transmissive; Alternatively, the first reflective surface (24) may be diffusely reflective, partially diffusely reflective, or specularly reflective. Alternatively, the first reflective surface (24) may be coated with a high refractive index coating.

4. The touch sensing component (100) according to claim 2, characterized in that, The touch sensing component (100) further includes a frame element (40), to which the light-emitting unit (10), the first optical component (20), and the at least two camera units (30) are fixed.

5. The touch sensing component (100) according to claim 1, characterized in that, The touch sensing component (100) further includes a frame element (40), and the first optical component (20) is a first light guide portion (25) disposed on the frame element (40). The first light guide portion (25) includes a first reflective surface (24), which is configured to reflect and guide the infrared light emitted by the light-emitting unit (10) to the touch surface (210).

6. The touch sensing component (100) according to claim 5, characterized in that, The first reflective surface (24) is etched metal, sprayed metal, beaded metal, or brushed metal, used to increase surface roughness in order to diffusely reflect the infrared light.

7. The touch sensing component (100) according to claim 1, characterized in that, The touch sensing component (100) further includes a second optical component (50) configured to receive infrared light reflected by the touch object and to reflect and guide the infrared light reflected by the touch object to the camera unit (30).

8. The touch sensing component (100) according to claim 7, characterized in that, The second optical component (50) includes a second light guide element (51), which includes a third surface (52), a fourth surface (53), and a second reflective surface (54). The second optical component (50) is configured to receive infrared light reflected by the touched object through the third surface (52), reflect the infrared light in the second light guide element (51) to the fourth surface (53) through the second reflective surface (54), and output the infrared light in the second light guide element (51) to the camera unit (30) through the fourth surface (53).

9. The touch sensing component (100) according to claim 7, characterized in that, The touch sensing component (100) further includes a frame element (40), and the second optical component (50) is a second light guide portion (55) disposed on the frame element (40). The second light guide portion (55) includes a second reflective surface (54), which is configured to receive infrared light reflected by the touch object and guide the infrared light reflected by the touch object to the camera unit (30).

10. A touch sensing device (1), characterized in that, include: Touch panel (200); as well as The touch sensing component (100) according to any one of claims 1 to 9.

11. The touch sensing device (1) according to claim 10, characterized in that, The light-emitting unit (10) is located on the side of the touch panel (200) opposite to the touch surface (210).

12. The touch sensing device (1) according to claim 10, characterized in that, The touch panel (200) includes a display panel (220), the display surface of which defines the touch surface (210); Alternatively, the touch panel (200) may include a display panel (220) and a glass cover (230), wherein the touch surface (210) is formed on the side of the glass cover (230) away from the display panel (220).

13. A touch sensing device (1), characterized in that, include: Touch panel (200), and The touch sensing component (100) according to any one of claims 2 to 5; The touch panel (200) includes a display panel (220) and a glass cover (230). The glass cover (230) is located on one side of the display panel (220). The light-emitting unit (10) is located on the same side of the glass cover (230) as the display panel (220). At least a portion of the first reflective surface (24) is located on a different side of the glass cover (230) along a first direction from the light-emitting unit (10). The light-emitting unit (10) includes a circuit board (11) and a light-emitting device (12) disposed on the circuit board (11). The orthographic projection of the light-emitting device (12) along a first direction is located outside the glass cover plate (230), and the first direction is parallel to the thickness direction of the glass cover plate (230).

14. A touch sensing device (1), characterized in that, include: Touch panel (200), and The touch sensing component (100) according to any one of claims 2 to 5; The touch panel (200) includes a display panel (220) and a glass cover (230). The glass cover (230) is located on one side of the display panel (220). The light-emitting unit (10) is located on the same side of the glass cover (230) as the display panel (220). At least a portion of the first reflective surface (24) is located on a different side of the glass cover (230) along a first direction from the light-emitting unit (10). An ink layer is provided on the edge area of ​​the glass cover (230). The light-emitting unit (10) includes a circuit board (11) and a light-emitting device (12) disposed on the circuit board (11). The orthographic projection of the light-emitting device (12) along the first direction is located inside the glass cover plate (230) and outside the ink layer, or the orthographic projection of the light-emitting device (12) along the first direction is located inside the ink layer, and the ink layer is an infrared-transmitting ink layer, and the first direction is parallel to the thickness direction of the glass cover plate (230).

15. A touch sensing device (1), characterized in that, include: Touch panel (200); as well as The touch sensing component (100) as described in claim 8 or 9; The touch panel (200) includes a display panel (220) and a glass cover (230). The glass cover (230) is located on one side of the display panel (220). The camera unit (30) is located on the same side of the glass cover (230) as the display panel (220). At least a portion of the second reflective surface (54) is located on a different side of the glass cover (230) along a first direction from the camera unit (30). The orthographic projection of the light-incident side of the camera unit (30) along the first direction is located outside the glass cover plate (230), and the first direction is parallel to the thickness direction of the glass cover plate (230).

Images