Touch display device

Abstract

The present application relates to the technical field of human-computer interaction. Provided is a touch display device, comprising a touch screen, a first infrared camera, a second infrared camera and a controller, wherein field of view ranges of the first infrared camera and the second infrared camera cover a display area of the touch screen, and a plane where a first optical axis of the first infrared camera intersects a second optical axis of the second infrared camera is parallel to and higher than an upper surface of the touch screen; and the controller is connected to the first infrared camera and the second infrared camera, respectively.

Description

Touch display device

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application No. 202410250805.5, filed on March 1, 2024, entitled “Touch Display Device,” the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application relates to the field of human-computer interaction technology, and in particular to a touch display device. Background Art

[0004] With the development and application of touch technology, users can use their fingers or touch pens to operate or write directly on interactive display devices.

[0005] The touch technologies commonly used in existing display devices include infrared touch technology and capacitive touch technology. Among them, infrared touch technology requires the installation of infrared strips on the four edges of the screen of the display device, and capacitive touch technology requires the full bonding of the sensor film material to the cover glass surface or the full bonding of the sensor film material to the liquid crystal display layer of the touch screen.

[0006] However, for infrared touch technology, the infrared strips on each side need to be fixed inside the profile, which increases the material cost of the profile; for capacitive touch technology, the preparation process of full bonding technology is complex and the production cost is high. Summary of the Invention

[0007] The present application provides a touch display device for reducing production costs.

[0008] An embodiment of a first aspect of the present application provides a touch display device, the touch display device comprising: a touch screen, a first infrared camera, a second infrared camera, and a controller;

[0009] The fields of view of the first infrared camera and the second infrared camera both cover the display area of ​​the touch screen, and a plane where the first optical axis of the first infrared camera and the second optical axis of the second infrared camera intersect is parallel to and higher than the upper surface of the touch screen;

[0010] The first infrared camera is used to capture a first image of a touch object acting on the touch screen, and the second infrared camera is used to capture a second image of the touch object;

[0011] The controller is connected to the first infrared camera and the second infrared camera respectively, and is used to determine the touch coordinates corresponding to the touch object on the touch screen according to the first image and the second image of the touch object.

[0012] In a possible implementation of the first aspect, the first infrared camera and the second infrared camera each include a camera and at least one light source;

[0013] The camera is integrated with the light source, or the light source is arranged on the periphery of the camera.

[0014] In a possible implementation of the first aspect, the light source is an infrared light source; and / or the camera is a wide-angle camera.

[0015] In a possible implementation of the first aspect, the touch display device further includes a vibration sensor and a processor, wherein the vibration sensor is configured to generate a vibration signal when detecting that the touch object touches the touch screen;

[0016] The processor is electrically connected to the touch screen, the controller and the vibration sensor respectively, and is used to control the touch screen to display touch display information corresponding to the touch coordinates when the touch coordinates transmitted by the controller and the vibration signal transmitted by the vibration sensor are obtained.

[0017] In a possible implementation manner of the first aspect, the vibration sensor is fixed to a lower surface of a cover glass in a non-display area of ​​the touch screen.

[0018] In a possible implementation manner of the first aspect, the vibration sensor includes a plurality of vibration sensors, and the plurality of vibration sensors are spaced apart and arranged on a lower surface of a cover glass in a non-display area of ​​the touch screen;

[0019] The processor is specifically configured to, upon acquiring the touch coordinates transmitted by the controller and the vibration signal transmitted by any vibration sensor, control the touch screen to display touch display information corresponding to the touch coordinates.

[0020] In a possible implementation manner of the first aspect, the first infrared camera and the second infrared camera are fixed at two ends of one side of the non-display area of ​​the touch screen;

[0021] The field of view angles of the first infrared camera and the second infrared camera are both greater than or equal to 90°.

[0022] In a possible implementation of the first aspect, the first infrared camera and the second infrared camera are respectively fixed in the frames at both ends of the upper side of the non-display area of ​​the touch screen, and the first optical axis and the second optical axis respectively coincide with the corresponding diagonals of the touch screen.

[0023] In a possible implementation of the first aspect, the frame includes a profile structure, and the first infrared camera and the second infrared camera are built into the profile structure.

[0024] In a possible implementation manner of the first aspect, the frame includes a profile structure, and the first infrared camera, the second infrared camera, and the profile structure are integrated together.

[0025] In a possible implementation of the first aspect, in the non-display area of ​​the touch screen, except for the border area where the first infrared camera and the second infrared camera are set, the upper surface of at least part of the other border areas of the touch screen is flush with the upper surface of the touch screen.

[0026] In a possible implementation manner of the first aspect, border areas of the first infrared camera and the second infrared camera are transitionally connected to other border areas of the touch screen through an arc-shaped chamfered structure.

[0027] In a possible implementation manner of the first aspect, the controller is integrated with the first infrared camera or the second infrared camera.

[0028] In a possible implementation of the first aspect, the controller is connected to the first infrared camera or the second infrared camera via a cable.

[0029] In a possible implementation manner of the first aspect, the controller is disposed in a non-display area of ​​the touch screen.

[0030] In a possible implementation of the first aspect, a lens optical distance of the first infrared camera and a lens optical distance of the second infrared camera are the same.

[0031] The touch display device provided in the embodiment of the present application includes: a touch screen, a first infrared camera, a second infrared camera, and a controller; wherein the fields of view of the first infrared camera and the second infrared camera both cover the display area of ​​the touch screen, and the plane where the first optical axis of the first infrared camera and the second optical axis of the second infrared camera intersect is parallel to and higher than the upper surface of the touch screen; the first infrared camera can capture a first image of a touch object acting on the touch screen, and the second infrared camera can capture a second image of the touch object; the controller can determine the touch coordinates corresponding to the touch object on the touch screen based on the first and second images of the touch object. That is, this solution can achieve touch coordinate determination by setting up two infrared cameras. Compared with the infrared touch solution that sets up infrared strips, this solution does not need to set up infrared strips within the surrounding profiles, and only needs to add one infrared camera, which is relatively cheaper. Compared with the capacitive touch solution that requires full bonding technology, the preparation process of setting up infrared cameras in this solution is simple, thereby reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] FIG1 is a schematic structural diagram of a touch display device provided in an embodiment of the present application;

[0033] FIG2 is a schematic diagram of the imaging principle of a touch object provided by an embodiment of the present application;

[0034] FIG3 is a schematic diagram of the imaging principle of multi-touch provided in an embodiment of the present application;

[0035] FIG4 is a schematic structural diagram of another touch display device provided in an embodiment of the present application;

[0036] Explanation of reference numerals: 1 - touch screen; 11 - display area; 12 - non-display area; 2 - first infrared camera; 3 - second infrared camera; 4 - vibration sensor. DETAILED DESCRIPTION

[0037] The terms used in the implementation methods of the embodiments of this application are only used to explain the specific embodiments of this application and are not intended to limit this application. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments.

[0038] The embodiment of the present application provides a touch display device for reducing production costs. The embodiment of the present application is described below with reference to the accompanying drawings.

[0039] FIG1 is a schematic diagram of the structure of a touch display device provided in an embodiment of the present application. As shown in FIG1 , the touch display device may include a touch screen 1. The touch screen 1 may include a cover glass and a display screen. The cover glass is attached to the light-emitting side of the display screen to protect the display screen from external factors such as scratches and collisions. A user can operate the touch display device by touching the touch area of ​​the touch screen 1. The touch screen 1 may include a display area 11 and a non-display area (or black border) 12 located outside the edge of the display area 11.

[0040] The following description takes the touch area as the display area 11 as an example. It is understood that FIG1 exemplarily illustrates the touch screen 1 as a rectangular screen. In actual products, the shape of the touch screen 1 can be square or other shapes, and the present embodiment does not specifically limit this.

[0041] The touch display device may further include a plurality of optical cameras, each of which may include a camera and at least one light source. The camera and the light source may be integrated together, or the light source may be arranged around the camera.

[0042] Considering that the camera lens has low transmittance to natural light but high transmittance to infrared light, to improve the camera's imaging quality, the light source can be an infrared light source. The infrared light source is used to emit high-brightness infrared light, which can form a uniform light field in the display area 11. This allows the infrared light to be blocked and reflected by the touch object acting on the touch screen 1, forming an image of the touch object within the camera.

[0043] Furthermore, considering that the location of a touch object can be relatively accurately determined using two optical cameras, in some embodiments, the touch display device may include a first infrared camera 2 and a second infrared camera 3 to reduce costs. The first infrared camera 2 may be used to capture a first image of the touch object, and the second infrared camera 3 may be used to capture a second image of the touch object, where the first and second images are different. In the embodiments of the present application, the touch object may be an object such as a finger or a stylus.

[0044] The first optical axis of the first infrared camera 2 and the second optical axis of the second infrared camera 3 can both be parallel to the upper surface of the touch screen 1 and be at the same distance from the touch screen 1. The plane where the first optical axis of the first infrared camera 2 and the second optical axis of the second infrared camera 3 intersect can be higher than the upper surface of the touch screen 1. This allows the first infrared camera 2 and the second infrared camera 3 to recognize that a touch object has entered the display area before the touch object touches the touch screen 1. In addition, because the plane formed by the first optical axis and the second optical axis is higher than the upper surface of the touch screen 1, it can also reduce the possibility of touch coordinate recognition errors caused by infrared light being blocked due to problems such as a protrusion on the touch screen 1 or foreign objects blocking the infrared cameras. The distance between the first optical axis and the second optical axis and the touch screen 1 can be set according to actual needs and is not particularly limited in this embodiment of the present application.

[0045] In one possible implementation, the first infrared camera 2 and the second infrared camera 3 can be fixed at both ends of one side of the non-display area 12 of the touch screen 1. The field of view of the first infrared camera 2 and the second infrared camera 3 can both be greater than or equal to 90°. This allows the field of view of the first infrared camera 2 and the second infrared camera 3 to better cover the display area, thereby facilitating the first infrared camera 2 and the second infrared camera 3 to capture images of the touch object from different directions, thereby improving the accuracy of touch coordinate recognition. In some embodiments, the first infrared camera 2 and the second infrared camera 3 can be wide-angle cameras to increase the field of view.

[0046] Specifically, referring to Figure 1 , the first infrared camera 2 and the second infrared camera 3 can be respectively fixed in the frame at both ends of the upper side of the non-display area 12 of the touch screen 1, that is, the first infrared camera 2 and the second infrared camera 3 are arranged in the upper left and upper right corners of the non-display area 12 of the touch screen 1. The first optical axis and the second optical axis respectively coincide with the corresponding diagonals of the touch screen 1. This not only prevents the display area 11 from being blocked by the cameras, but also allows the field of view of the first infrared camera 2 and the second infrared camera 3 to completely cover the display area 11 of the touch screen 1, thereby further improving the accuracy of touch coordinate recognition. For ease of explanation, the following description will also use the example of the first infrared camera 2 and the second infrared camera 3 being fixed in the frame at both ends of the upper side of the non-display area 12.

[0047] Specifically, the first infrared camera 2 and the second infrared camera 3 can be built into the profile structure of the frame, so that the profile structure can fix the cameras. The profile structure can be made of metal material to improve the fixation of the infrared cameras. Of course, the profile structure can also be made of non-metallic hard materials to achieve lightweight touch display device.

[0048] It can be understood that in some embodiments, the first infrared camera 2, the second infrared camera 3 and the profile structure can be integrated together, so that the first infrared camera 2 and the second infrared camera 3 can be modularly fixed at the upper left corner and the upper right corner of the non-display area 12 of the touch screen 1, which can simplify the structure and facilitate production and maintenance.

[0049] In the non-display area 12 of the touch screen 1, except for the frame area where the first infrared camera 2 and the second infrared camera 3 are set (for example, the upper left and upper right corners of the upper frame), the upper surface of at least part of the other frame areas of the touch screen 1 can be flush with the upper surface of the touch screen 1, thereby improving the aesthetics of the touch display device. In particular, the connection area between the frame area where the infrared camera is set and the other frame areas can adopt a gradually transitioning arc chamfer structure to achieve the flushness of the other frame areas with the upper surface of the touch screen 1, further improving the aesthetics of the touch display device. In some embodiments, the upper surface of the upper frame where the first infrared camera 2 and the second infrared camera 3 are set can be flush, that is, except for the upper side edges where the first infrared camera 2 and the second infrared camera 3 are set, the upper surface of the frame on the other side of the touch screen 1 is flush with the upper surface of the touch screen 1, thereby improving the connection strength of the frame area that fixes the infrared camera. Similarly, in the connection area between the upper side edge and the left and right sides of the touch screen 1, a gradually transitioning arc chamfer structure can be adopted to achieve the flushness of the left and right side frames with the upper surface of the touch screen 1, further improving the aesthetics of the touch display device.

[0050] The touch display device may further include a controller (not shown), which may be connected to the first infrared camera 2 and the second infrared camera 3, respectively. In some implementations, the first infrared camera 2 and the second infrared camera 3 may be connected via a cable. After capturing an image of the touch object, the first infrared camera 2 and the second infrared camera 3 may send the image to the controller, which may then determine the touch coordinates corresponding to the touch object on the touch screen 1 based on the captured image.

[0051] The controller can be arranged at any position in the non-display area 12 of the touch display device, for example, on a main board or other circuit boards of the touch display device.

[0052] In some implementations, the controller may also be integrated with the first infrared camera 2 or the second infrared camera 3 , thereby simplifying the structure and facilitating production and maintenance.

[0053] Figure 2 is a schematic diagram of the imaging principle of a touch object provided in an embodiment of the present application. As shown in Figure 2, when the touch object M enters the display area 11, the infrared light from the first infrared camera 2 and the second infrared camera 3 is irradiated onto the touch object, and the touch object reflects the infrared light, so that the first infrared camera 2 and the second infrared camera 3 can respectively capture the first image and the second image of the touch object.

[0054] After the first infrared camera 2 and the second infrared camera 3 capture images, they can send the first image and the second image to the controller respectively. After receiving the first image and the second image, the controller can confirm that the touch object has entered the display area 11, and then calculate the touch coordinates (X, Y) of the touch point corresponding to the touch object M based on the first image and the second image.

[0055] To facilitate production and calculation of touch coordinates, the first infrared camera 2 and the second infrared camera 3 may be of the same model, that is, the optical distance of the lens of the first infrared camera 2 and the optical distance of the lens of the second infrared camera 3 are the same.

[0056] Specifically, as shown in FIG2 , r1 is the diameter of the touch object M (known), r2 is the imaging diameter of the touch object M within the lens of the first infrared camera 2 (known), and r3 is the imaging diameter of the touch object M within the second infrared camera 3 (known). d2 is the optical distance of the touch object M from the lens of the first infrared camera 2 (known), and h2 is the optical distance of the touch object M from the lens of the second infrared camera 3 (known), satisfying d2 = h2. C is the optical center distance between the first infrared camera 2 and the second infrared camera 3 (known, and in this embodiment, can be the width of the display area 11). d1 is the distance between the center of the touch object M and the optical center of the first infrared camera 2, and h1 is the distance between the center of the touch object M and the optical center of the second infrared camera 3. The projection of the center of the touch object M onto the upper side of the touch screen 1 divides the optical center distance between the first infrared camera 2 and the second infrared camera 3 into C1 and C2.

[0057] According to similar triangles and the Pythagorean theorem, the following formula can be determined:

[0058] (1) r2 / r1=d2 / d1;

[0059] (2) r3 / r1=h2 / h1;

[0060] (3) C1+C2=C;

[0061] (4)d1 2 -C1 2 =h1 2 -C2 2 =S 2 .

[0062] According to the above four formulas, we can conclude that: C1=(C 2 +(d2*r1 / r2) 2 -(r1*h2 / r3) 2 ) / 2C;

[0063] The above C1 is the horizontal coordinate X of the touch point corresponding to the touch object M, and S is the vertical coordinate Y of the touch point corresponding to the touch object M.

[0064] For example, as shown in Figure 3, when a touch object touches point A, the controller can use the above method to determine the touch coordinates of point A. When a touch object touches point B at the same time, since point B is aligned with point A relative to first infrared camera 2 and is therefore obscured by point A, the image captured by first infrared camera 2 is still the first image corresponding to point A, and the image captured by second infrared camera 3 includes the second image of point A and the second image of point B. The controller can determine the coordinates of point A based on the first and second images of point A, and determine the coordinates of point B based on the first image of point A and the second image of point B.

[0065] It is understood that in the case of multi-touch, when there is no occlusion, the coordinate calculation method for each point is similar to the calculation method for point A. In addition, the above description uses the case where two touch points are blocked relative to the first infrared camera 2 as an example. If two touch points are blocked relative to the second infrared camera 3, or if three or more touch points are blocked relative to any camera, the coordinates of the two touch points can be determined using a similar method, and no further details will be given here.

[0066] Taking into account the situation where the touch object enters the display area 11 but does not touch the touch screen 1, in some embodiments, as shown in Figure 4, the touch display device may further include a vibration sensor 4, so that when the touch coordinates are determined based on the image information collected by the infrared camera, the detection information of the vibration sensor 4 can be combined to determine whether the touch object touches the touch screen, thereby improving the reliability of the touch coordinate detection results.

[0067] It is understandable that the touch display device may further include a processor (not shown), and the processor may be used to process the touch coordinate information determined by the controller and the detection information of the vibration sensor.

[0068] Vibration sensor 4 generates a vibration signal when it detects a touch object touching touch screen 1. The processor is electrically connected to touch screen 1, the controller, and vibration sensor 4. Upon acquiring the touch coordinates transmitted by the controller and the vibration signal transmitted by vibration sensor 4, the processor controls touch screen 1 to display touch display information corresponding to the touch coordinates. This embodiment reduces misidentification issues with the touch display device, thereby improving the reliability of the touch display device.

[0069] In some embodiments, the controller and the processor may be two independent components. In other embodiments, the controller and the processor may be integrated together, thereby simplifying the structure.

[0070] Touch display information may include, but is not limited to, touch point display information. For example, when a user enters writing mode, the processor may control the touch screen 1 to display a writing track (i.e., touch point display information) based on the touch coordinates. If the processor determines that the touch coordinates of the touch screen 1 correspond to an application icon, it may control the touch screen 1 to display a page that opens the application.

[0071] The number of vibration sensors 4 can be one, and vibration sensor 4 can be fixed to the lower surface of the cover glass in the non-display area 12 of the touch screen 1, thereby increasing the screen-to-body ratio of the touch display device. For example, vibration sensor 4 can be attached to the lower surface of the cover glass using optical adhesive, thereby improving the adhesion between vibration sensor 4 and the cover glass, thereby improving the detection accuracy of vibration sensor 4.

[0072] Of course, multiple vibration sensors 4 may be provided, and the multiple vibration sensors 4 may be spaced apart on the lower surface of the cover glass of the non-display area 12 of the touch screen 1. When multiple vibration sensors 4 are provided, the processor may control the touch screen 1 to display touch display information corresponding to the touch coordinates upon obtaining the touch coordinates transmitted by the controller and the vibration signal transmitted by any vibration sensor 4.

[0073] Since the embodiment of the present application uses two infrared cameras to capture images of the touch object and uses the vibration sensor 4 to identify whether the touch object touches the touch screen 1, the touch object is no longer limited to being a conductor, thereby improving user convenience.

[0074] It is understood that in one possible implementation, the vibration sensor may be replaced by a pressure sensor. Upon acquiring the touch coordinates transmitted by the controller and the pressure signal transmitted by the pressure sensor, the processor may control the touch screen 1 to display touch display information corresponding to the touch coordinates.

[0075] In the above embodiments, the two infrared cameras are respectively located at the upper left corner and the upper right corner of the touch screen 1. According to other embodiments of the present application, while ensuring that the optical axis of the infrared camera is parallel to the touch screen 1, the two infrared cameras can also be respectively set at any positions around the touch screen 1. Correspondingly, those skilled in the art can similarly obtain the touch coordinates of the touch point on the touch screen 1 based on the above formula and combined with certain coordinate conversion.

[0076] The touch display device provided in the embodiment of the present application includes: a touch screen, a first infrared camera, a second infrared camera, and a controller; wherein the fields of view of the first infrared camera and the second infrared camera both cover the display area of ​​the touch screen, and the plane where the first optical axis of the first infrared camera and the second optical axis of the second infrared camera intersect is parallel to and higher than the upper surface of the touch screen; the first infrared camera can capture a first image of a touch object acting on the touch screen, and the second infrared camera can capture a second image of the touch object; the controller can determine the touch coordinates corresponding to the touch object on the touch screen based on the first and second images of the touch object. That is, this solution can achieve touch coordinate determination by setting up two infrared cameras. Compared with the infrared touch solution that sets up infrared strips, this solution does not need to set up infrared strips within the surrounding profiles, and only needs to add one infrared camera, which is relatively cheaper. Compared with the capacitive touch solution that requires full bonding technology, the preparation process of setting up infrared cameras in this solution is simple, thereby reducing production costs.

[0077] It should be understood that in the description of this application specification and the appended claims, the terms "include", "comprises", "has" and any variations thereof are intended to cover non-exclusive inclusions and mean "including but not limited to", unless otherwise specifically emphasized.

[0078] Furthermore, in the description of this application, unless otherwise specified, "a plurality of" refers to two or more than two. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items.

[0079] In addition, in the description of this application, it should be understood that terms such as "vertical", "horizontal", "up", "down", "front", "back", "left", "right", "inside", and "outside" that indicate directions are only used to more clearly illustrate the structure of this application in conjunction with the drawings, and this application is not limited to this.

[0080] In this application, unless otherwise clearly specified and limited, the terms "connection", "connected", etc. should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection between two elements or the interaction relationship between two elements. Unless otherwise clearly specified and limited, ordinary technicians in this field can understand the specific meanings of the above terms in this application according to specific circumstances.

[0081] In addition, in the description of this application specification and the appended claims, the terms "first," "second," etc. are used to distinguish similar objects, and are not necessarily used to describe a specific order or precedence, nor should they be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments described herein can be implemented in an order other than that illustrated or described herein; and features specified as "first" or "second" may explicitly or implicitly include at least one of such features.

[0082] In the embodiments of this application, words such as "exemplarily" or "for example" are used to indicate examples, illustrations, or explanations. Any embodiment or design described as "exemplarily" or "for example" in the embodiments of this application should not be interpreted as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplarily" or "for example" is intended to present the relevant concepts in a concrete manner.

[0083] References to "one embodiment" or "some embodiments" in this specification mean that a particular feature, structure, or characteristic described in conjunction with the embodiment is included in one or more embodiments of the present application. Thus, phrases such as "in one embodiment," "in some embodiments," "in other embodiments," and "in yet other embodiments" appearing in various places in this specification do not necessarily refer to the same embodiment, but rather mean "one or more but not all embodiments," unless otherwise specifically emphasized.

[0084] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A touch display device, comprising: touch screen, a first infrared camera, a second infrared camera, and a controller; The fields of view of the first infrared camera and the second infrared camera both cover the display area of ​​the touch screen, and a plane where a first optical axis of the first infrared camera and a second optical axis of the second infrared camera intersect is parallel to and higher than the upper surface of the touch screen; the first infrared camera is configured to capture a first image of a touch object acting on the touch screen, and the second infrared camera is configured to capture a second image of the touch object; The controller is connected to the first infrared camera and the second infrared camera respectively, and is used to determine the touch coordinates corresponding to the touch object on the touch screen according to the first image and the second image of the touch object.

2. The touch display device according to claim 1, wherein: The first infrared camera and the second infrared camera each include a camera and at least one light source; The camera is integrated with the light source, or the light source is arranged on the periphery of the camera.

3. The touch display device according to claim 2, wherein: The light source is an infrared light source; and / or the camera is a wide-angle camera.

4. The touch display device according to claim 1, wherein: The touch display device further includes a vibration sensor and a processor, wherein the vibration sensor is configured to generate a vibration signal when detecting that the touch object touches the touch screen; The processor is electrically connected to the touch screen, the controller and the vibration sensor respectively, and is used to control the touch screen to display touch display information corresponding to the touch coordinates when the touch coordinates transmitted by the controller and the vibration signal transmitted by the vibration sensor are obtained.

5. The touch display device according to claim 4, wherein: The vibration sensor is fixed on the lower surface of the cover glass of the non-display area of ​​the touch screen.

6. The touch display device according to claim 5, wherein: The vibration sensors include a plurality of vibration sensors, which are spaced apart and arranged on the lower surface of the cover glass in the non-display area of ​​the touch screen; The processor is specifically configured to, upon acquiring the touch coordinates transmitted by the controller and the vibration signal transmitted by any vibration sensor, control the touch screen to display touch display information corresponding to the touch coordinates.

7. The touch display device according to claim 1, wherein: The first infrared camera and the second infrared camera are fixed at two ends of one side of the non-display area of ​​the touch screen; The field of view angles of the first infrared camera and the second infrared camera are both greater than or equal to 90°.

8. The touch display device according to claim 7, wherein: The first infrared camera and the second infrared camera are respectively fixed in frames at both ends of the upper side of the non-display area of ​​the touch screen, and the first optical axis and the second optical axis respectively coincide with the corresponding diagonal lines of the touch screen.

9. The touch display device according to claim 8, wherein: The frame includes a profile structure, and the first infrared camera and the second infrared camera are built into the profile structure.

10. The touch display device according to claim 8, wherein: The frame includes a profile structure, and the first infrared camera, the second infrared camera and the profile structure are integrated together.

11. The touch display device according to claim 8, wherein: In the non-display area of ​​the touch screen, except for the frame area where the first infrared camera and the second infrared camera are arranged, the upper surface of at least part of the other frame areas of the touch screen is flush with the upper surface of the touch screen.

12. The touch display device according to claim 8, wherein: The frame areas of the first infrared camera and the second infrared camera are transitionally connected to other frame areas of the touch screen through an arc-shaped chamfered structure.

13. The touch display device according to any one of claims 1 to 12, wherein: The controller is integrated with the first infrared camera or the second infrared camera.

14. The touch display device according to any one of claims 1 to 12, wherein: The controller is connected to the first infrared camera or the second infrared camera through a cable.

15. The touch display device according to any one of claims 1 to 12, wherein: The controller is disposed in a non-display area of ​​the touch screen.

16. The touch display device according to any one of claims 1 to 12, wherein: The optical distance of the lens of the first infrared camera is the same as the optical distance of the lens of the second infrared camera.

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