Touch screen module, touch screen, electronic device, and wearable smart device

Abstract

The present application relates to the technical field of terminals, and in particular to a touch screen module, a touch screen, an electronic device, and a wearable smart device. The touch screen module comprises a display module, a cover plate, and an optical detection module, wherein the display module comprises a screen body and a first circuit board, the first circuit board is fixed to a non-light exit side of the screen body, and the first circuit board comprises a first part attached to the screen body and a second part extending beyond the screen body. The cover plate is arranged on a light exit side of the screen body. The optical detection module comprises a plurality of optical devices, the plurality of optical devices are arranged on the second part of the first circuit board towards the cover plate, the plurality of optical devices are distributed at intervals around the screen body, and gaps between the plurality of optical devices and the screen body are formed. The plurality of optical devices comprise a plurality of light emitting devices and a plurality of light receiving devices, the light emitting devices are used for emitting light, and the light receiving devices are used for receiving light emitted by the light emitting devices and conveyed through the cover plate. According to the touch screen module, device miniaturization is realized while the touch function is met.

Description

Touch screen modules, touch screens, electronic devices and wearable smart devices

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of the People's Republic of China on March 20, 2024, with application number 202410327910.4 and application name "Touch screen module, touch screen, electronic device and wearable smart device", all contents of which are incorporated by reference into this application. Technical Field

[0003] The present application relates to the field of terminal technology, and in particular to a touch screen module, a touch screen, an electronic device, and a wearable smart device. Background Art

[0004] A touchscreen is an inductive display device that can receive input signals such as touch. Users can interact with the touchscreen, and the touchscreen can detect where the user's finger or object touches the touchscreen.

[0005] With the widespread application of touch screens in various fields, the demand for touch functions in electronic devices has become more diversified. In some application scenarios, touch screens must be miniaturized while ensuring touch performance. Summary of the Invention

[0006] The present application provides a touch screen module, a touch screen, an electronic device and a wearable smart device. The touch screen module has a small size and a streamlined structure while meeting the touch function, which is conducive to the miniaturization of the device.

[0007] In the first aspect, the present application provides a touch screen module, which can be applied to electronic devices with touch display functions. The touch screen module includes a display module, a cover plate and an optical detection module. The display module includes a screen body and a first circuit board. The first circuit board is fixed to the non-light-emitting side of the screen body, and the non-light-emitting side of the screen body is opposite to the light-emitting side. The first circuit board includes a first part that fits the screen body and a second part that extends beyond the screen body. The cover plate is arranged on the light-emitting side of the screen body, and the light emitted by the screen body can be emitted through the cover plate to realize image display. Among them, the optical detection module includes a plurality of optical devices, and the plurality of optical devices are arranged on the second part of the first circuit board facing the cover plate, and the plurality of optical devices are spaced around the screen body and have gaps with the screen body. Among them, the plurality of optical devices include a plurality of light emitting devices and a plurality of light receiving devices. The light emitting device is used to emit light, and the light receiving device is used to receive light emitted by the light emitting device and transmitted through the cover plate.

[0008] The touch screen module uses an optical detection module to implement touch detection. During operation, light emitted by the light emitting device can be received by at least one light receiving device. Multiple light paths formed by multiple light emitting devices and multiple light receiving devices can propagate within the cover plate to form a light detection network. When a user touches the cover plate, the angle of light refraction at the touch point changes, affecting light transmission. By analyzing the light transmission, the touch point can be located and touch detection can be achieved. The light transmission between the light emitting device and the light receiving device within the cover plate can further broaden the application scenarios of the touch screen module, allowing the touch screen module to perform normal touch functions without being affected by outdoor or underwater environments. The multiple optical devices are fixed to the first circuit board to achieve the integration of the optical devices with the first circuit board of the display module, which can eliminate the need for structures to fix the optical devices. The optical devices are located between the cover plate and the first circuit board and do not extend beyond the first circuit board. This does not increase the thickness and radial dimensions of the touch screen module, reducing the space occupied by the touch screen module and facilitating the miniaturization of devices containing the touch screen module.

[0009] In some possible implementations, the first circuit board includes a connecting wire for connecting multiple optical devices, the connecting wire being used to connect the circuits of the optical devices. The connecting wire includes a second edge, the optical device includes a first edge, the spacing between the second edge and the edge of the first circuit board is no less than the spacing between the first edge and the edge of the first circuit board, the connecting wire does not extend beyond the area occupied by the optical device, and does not increase the radial dimensions of the touch screen module. With reference to a direction from the center of the first circuit board toward the edge of the first circuit board, the first edge is the edge of the connecting wire closest to the edge of the first circuit board, and the second edge is the edge of the optical device closest to the edge of the first circuit board.

[0010] The projection area of ​​the screen on the cover partially overlaps with the area where the connecting lines are located. In the direction perpendicular to the thickness of the touch screen module, the screen and the connecting lines share a portion of the space, making full use of the space occupied by the display module.

[0011] In some possible implementations, the light formed by multiple light emitting devices and multiple light receiving devices can form a light detection network inside the cover. In order to make the light detection network cover the display area of ​​the touch screen module as much as possible, while ensuring touch performance, the distance between any two adjacent optical devices is less than or equal to 20 mm.

[0012] In some possible implementations, in order to prevent light crosstalk between two adjacent optical devices, a light-blocking structure is provided between at least two adjacent optical devices. The light-blocking structure is made of a light-shielding material and can achieve a good light-shielding effect.

[0013] In some possible implementations, the screen includes a second circuit board, and the touch screen module includes a first connector for connecting the first and second circuit boards. The second circuit board is part of the screen, and a portion of the screen exists between the first and second circuit boards. The first connector provides an electrical connection between the first and second circuit boards. No optical devices are positioned in the area projected by the first connector onto the second portion of the circuit board. The area through which the first connector passes can be considered a keepout zone for optical devices.

[0014] There are many possible implementations of the first connecting portion connecting the first circuit board and the second circuit board.

[0015] The first connecting portion may include a flexible portion and a rigid portion, with the rigid portion being attached to the surface of the first circuit board facing away from the screen, and the flexible portion being connected between the rigid portion and the second circuit board. Alternatively, the flexible portion and the rigid portion may be integrally formed, in which case the first connecting portion and the second circuit board are independent and connected. Alternatively, the flexible portion and the second circuit board may be integrally formed, in which case the flexible portion is part of the second circuit board, and the rigid portion and the flexible portion are independent and connected.

[0016] Possibly, the first connecting portion and the second circuit board have an integrated structure, and the first connecting portion is a flexible circuit board. In this case, the first connecting portion is a part of the second circuit board.

[0017] In some possible implementations, the touch screen module also includes a screen driving chip. The screen driving chip is arranged on the surface of the first circuit board where the first connecting portion and the first circuit board bonding portion are away from each other. The screen driving chip is connected to the second circuit board through the first connecting portion to realize light emission control of the display module.

[0018] In some possible implementations, the display module includes a peripheral driver component, which is disposed on a surface of the first circuit board facing away from the screen. The peripheral driver component is electrically connected to a screen driver chip via the first circuit board, and cooperates with the screen driver chip to implement the display function of the display module. The peripheral driver component includes at least one component selected from the group consisting of a resistor, a capacitor, and an inductor, or a combination of multiple components.

[0019] In some possible implementations, the touch screen module further includes a second connection portion configured to connect the first circuit board to the mainboard. The plurality of optical devices are electrically connected to the second connection portion via the first circuit board. The second connection portion serves as a connection port for the touch screen module to the mainboard, through which the plurality of optical devices can be connected. This reduces the number of external pins on the entire touch screen module, simplifying the architecture.

[0020] In some possible implementations, the optical detection module includes an optical detection driver device, which is disposed on a surface of a first circuit board facing away from the screen body. The optical detection driver device is electrically connected to the multiple optical devices via the first circuit board. The optical detection driver device can be directly disposed on the first circuit board, and the operation of the multiple optical devices can be controlled via the first circuit board.

[0021] In a second aspect, the present application provides a touch screen comprising a mainboard and any one of the touch screen modules provided in the first aspect. The touch screen module includes a second connection portion, to which the display module and the optical detection module are electrically connected, respectively. The second connection portion is connected to the mainboard via a connector, and the display module and the optical detection module can be controlled by the mainboard. The touch screen module is connected to the mainboard via the second connection portion, which simplifies the touch screen architecture and helps reduce the size of the touch screen. The connector can be a board-to-board connector or a zero insertion force connector.

[0022] In a third aspect, the present application provides a touch screen comprising a mainboard and any one of the touch screen modules provided in the first aspect. The touch screen module includes a second connection portion, the display module is electrically connected to the second connection portion, and the second connection portion is connected to the mainboard via a connector, enabling the mainboard to control the display module. The touch screen module is connected to the mainboard via the second connection portion, which simplifies the touch screen architecture and helps reduce the size of the touch screen. The connector can be a board-to-board connector or a zero insertion force connector.

[0023] In a fourth aspect, the present application provides an electronic device comprising a housing and any one of the touch screens provided in the second or third aspect above, wherein the touch screen module is disposed in the housing, and a surface of the cover plate facing away from the screen body is exposed from the housing for display.

[0024] In some possible implementations, the electronic device further includes other structural components, and the placement of the touchscreen module in the touchscreen needs to take into account structural avoidance. For example, the electronic device includes an antenna disposed within a housing, and the touchscreen module avoids the antenna's clearance area.

[0025] In a fifth aspect, the present application provides a wearable smart device comprising a watch body and a watch strap connected to the watch body. The watch body comprises a touch screen as provided in the second or third aspect and the electronic device provided in the fourth aspect. Because the touch screen module can achieve excellent touch functionality while occupying a small space, the wearable smart device has excellent portability and can provide users with a more comfortable and practical experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] FIG1 is a schematic structural diagram of an electronic device provided in an embodiment of the present application;

[0027] FIG2a is a schematic diagram of a partial cross-sectional structure of a touch screen provided in an embodiment of the present application;

[0028] FIG2 b is a schematic diagram of the touch control principle of a touch screen provided in an embodiment of the present application;

[0029] FIG3 a is a schematic diagram of a partial cross-sectional structure of a touch screen provided in an embodiment of the present application;

[0030] FIG3 b is a schematic diagram of the touch control principle of a touch screen provided in an embodiment of the present application;

[0031] FIG4a is a schematic structural diagram of an electronic device provided in an embodiment of the present application;

[0032] FIG4 b is a schematic diagram of a partial structure of an electronic device provided in an embodiment of the present application;

[0033] FIG5a is a schematic structural diagram of a touch screen module provided in an embodiment of the present application;

[0034] FIG5 b is a schematic structural diagram of a display module of a touch screen module provided in an embodiment of the present application;

[0035] FIG5c is a schematic diagram of a partial cross-sectional structure of a touch screen module provided in an embodiment of the present application;

[0036] FIG6 is an enlarged schematic diagram of a partial cross-sectional structure of a touch screen module provided in an embodiment of the present application;

[0037] FIG7 is a schematic cross-sectional view of a cover plate of a touch screen module provided in an embodiment of the present application;

[0038] FIG8 is a schematic diagram of the touch control principle of a touch screen module provided in an embodiment of the present application;

[0039] FIG9 is a schematic diagram of a light detection network formed by multiple optical devices of a touch screen module provided by an embodiment of the present application;

[0040] FIG10a is a schematic structural diagram of a touch screen module provided in an embodiment of the present application;

[0041] FIG10b is a schematic structural diagram of a display module of a touch screen module provided in an embodiment of the present application;

[0042] FIG11a is a schematic diagram of a partial cross-sectional structure of a touch screen module provided in an embodiment of the present application;

[0043] FIG11b is an enlarged schematic diagram of a partial cross-sectional structure of a touch screen module provided in an embodiment of the present application;

[0044] FIG12a is a schematic diagram of a partial cross-sectional structure of a touch screen module provided in an embodiment of the present application;

[0045] FIG12 b is a schematic diagram of a partial cross-sectional structure of a touch screen module provided in an embodiment of the present application;

[0046] FIG12c is a schematic diagram of a partial cross-sectional structure of a touch screen module provided in an embodiment of the present application;

[0047] FIG12 d is a schematic diagram of a partial cross-sectional structure of a touch screen module provided in an embodiment of the present application;

[0048] FIG13a is a schematic structural diagram of a touch screen module provided in an embodiment of the present application;

[0049] FIG13b is a schematic structural diagram of a touch screen module provided in an embodiment of the present application;

[0050] FIG13c is a schematic structural diagram of a touch screen module connected to a mainboard according to an embodiment of the present application;

[0051] FIG14a is a schematic structural diagram of a touch screen module provided in an embodiment of the present application;

[0052] FIG14b is a schematic structural diagram of a touch screen module provided in an embodiment of the present application;

[0053] FIG15 is a schematic structural diagram of a touch screen module provided in an embodiment of the present application;

[0054] FIG16 is a schematic diagram of a partial cross-sectional structure of an electronic device provided in an embodiment of the present application.

[0055] Figure markings: 100-watch body; 200-watch strap; 10-touch screen; 20-housing; 30-support foot; 40-decorative ring; 1-touch screen module; 11-display module; 111-screen body; 1111-second circuit board; 112-first circuit board; 113-screen body driver chip; 114-peripheral driver device; 115-first connecting part; 1151-flexible part; 1152-rigid part; 12-cover; 13-optical device; 14-optical detection driver device; 15-frame; 16-transparent body; 17-reflective element; 18, 18a, 18b, 18c, 18d-light blocking structure; 2-main board; 21-electrical device. DETAILED DESCRIPTION

[0056] With the advancement of technology, touchscreens are widely used in electronic devices to enable human-computer interaction. Touchscreens offer simple and convenient operation and a better user experience, leading to their widespread adoption in a growing number of interactive situations. Traditionally, capacitive touchscreens have low touch speeds and resolutions, and are difficult and expensive to manufacture.

[0057] The embodiments of the present application provide a touch screen module, a touch screen, an electronic device, and a wearable smart device. The touch screen module uses multiple optical devices to form a light matrix to realize the touch function, has the advantages of a simple structure and a small size, and can be applied to a wider range of application scenarios.

[0058] In order to make the purpose, technical solutions and advantages of this application clearer, this application will be further described in detail below with reference to the accompanying drawings.

[0059] The terms used in the following embodiments are only for the purpose of describing specific embodiments and are not intended to limit the present application. As used in the specification and appended claims of this application, the singular expressions "a", "an", "said", "above", "the", and "this" are intended to also include expressions such as "one or more", unless the context clearly indicates otherwise.

[0060] References to "one embodiment" or "some embodiments" in this specification mean that a particular feature, structure, or characteristic described in conjunction with that 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. The terms "including," "comprising," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0061] The electronic device provided in the embodiments of the present application is a device with touch interaction capabilities. By way of example and not limitation, the electronic device may be a small-screen device such as a mobile phone, tablet computer, laptop computer, PDA, mobile internet device (MID), wearable device, virtual reality (VR) device, or a large-screen device such as a television, conference display screen, or outdoor information display screen. Application areas of the electronic device include, but are not limited to, mobile terminals, multimedia information systems, medical equipment, industrial automation, entertainment and catering industries, automatic ticketing systems, education systems, and many other fields.

[0062] Figure 1 illustrates a television as an electronic device. As shown in Figure 1 , the television includes a housing 20, a touch screen 10 mounted on the housing 20, and support legs 30 for supporting the housing 20 and touch screen 10. Touch screen 10 is capable of receiving touch signals to implement interactive functions. Specifically, touch screen 10 utilizes light signals to form a light matrix to detect and locate contact with a user's finger or stylus.

[0063] As shown in FIG2a , a partial cross-sectional structure of a touch screen 10 includes a frame 15, a display module 11, and a plurality of optical detection modules. The display module 11 includes a light-emitting side and a non-light-emitting side opposite to the light-emitting side. The plurality of optical detection modules are arranged on the non-light-emitting side of the display module 11 and are arranged around the touch screen. Each optical detection module includes an optical device 13 and a control circuit board 14 for controlling the optical device 13. A part of the plurality of optical devices 13 is used to emit light, and the other part is used to receive light. Exemplarily, the display module 11 and the plurality of optical detection modules are fixed to the frame 15, and a reflector 17 and a transparent body 16 are provided on the light-emitting side of the display module 11. The reflector 17 and the transparent body 16 are used as a light-guiding structure to adjust the light emitted by the optical device 13, so that the light emitted by the plurality of optical devices 13 can form a light detection network on the light-emitting side of the display module 11. The reflector 17 has a reflective surface F that is tilted toward the light-emitting surface of the display module 11. The transparent body 16 has a high light transmittance, allowing light reflected from the reflective surface F to pass through. The transparent body 16 must be assembled with the frame 15 to form a space that can accommodate the reflector 17. To protect the various components, the touch screen 10 requires waterproof sealing at the joints of the various structures.

[0064] As shown in Figure 2b, the working principle of touch detection of the touch screen 10 is exemplified. Taking a light emitting device 131 for emitting light and a light receiving device 132 for receiving light as an example, the light emitting device 131 and the optical receiving device 132 are respectively an optical device 13. The light emitted by the light emitting device 131 passes through the display module 11 and illuminates the reflective surface F of the reflective component 17 and is reflected by the reflective surface F. The light reflected by the reflective surface F passes through the transparent body 16 and is emitted. For example, after receiving the light, the reflective component 17 on the other side of the display module 11 refracts the light and passes through the display module 11 to be received by the light receiving device 132. Based on such a light emitting and receiving principle, a light detection network composed of multiple light rays in different directions will be formed on the light emitting surface side of the display module 11.

[0065] Figure 3a illustrates a partial cross-sectional structure of another touch screen 10. As shown in Figure 3a, multiple optical detection modules are positioned on the light-emitting side of the display module 11 and arranged around the periphery of the touch screen 10. Referring further to the operating principle of touch detection shown in Figure 3b, light emitted by the light-emitting device 131 passes through the transparent body 16 and is then emitted. The light-receiving device 132 receives light from the light-emitting side of the display module 11, thereby forming a light detection network on the light-emitting side of the display module 11 consisting of multiple light beams in different directions.

[0066] With reference to the two touch screens 10 illustrated in Figures 2a and 2b and Figures 3a and 3b, the optical device 13 can be an infrared optical device. Specifically, the light emitting device 131 can be an infrared light emitting diode, and the light receiving device 132 can be an infrared photosensitive diode. An infrared optical array composed of multiple optical devices 13 is used, in which the light emitted by the light emitting device 131 can form a light detection network on the light emitting surface side of the display module 11. When the user's finger or stylus touches the display module 11, it will affect the light transmission there. When the light receiving device 132 receives the light, the light signal change can be converted into the coordinate position of the touch to achieve the response of the operation, and finally realize the touch operation of the touch screen 10. This touch screen 10 uses the optical signal emission and reception of the optical device 13 to achieve touch detection, which has the advantages of sensitive touch and low cost.

[0067] In the touch screen 10 provided in the above embodiment, in order to guide and control the light, light guides such as a reflector 17 and a transparent body 16 need to be provided. These light guides may be scratched, scraped, and dusted over time, which may affect their performance. The optical device 13 is provided on the light-emitting side or the non-light-emitting side of the display module 11, and the reflector 17 and the transparent body 16 are provided on the light-emitting side of the display module 11, occupying a large space in the thickness direction of the touch screen 10. At the same time, the optical device 13, the reflector 17 and the transparent body 16 also occupy the peripheral space of the display area of ​​the display module 11, resulting in a large non-display area on the touch screen 10, which is also known as a black border. Each optical device 13 is controlled by an independent circuit board 14, which may further increase the space occupied by the optical detection module. The overall structure of the touch screen 10 is relatively complex, and a high level of waterproof sealing effect needs to be considered, resulting in certain limitations in the application scenarios of the touch screen 10.

[0068] At present, the touch screen 10 is widely used in various fields. On the basis of satisfying the touch function, more requirements are put forward for the touch screen 10. Taking wearable smart devices as an example, FIG4a shows a wearable smart watch. As an example and not a limitation, the wearable smart watch can realize various functions through software support, data interaction, and cloud interaction. These functions include but are not limited to motion monitoring, vital sign detection, etc. When used, the user can control the smart watch by touching the touch screen 10. As shown in FIG4a, the smart watch includes a watch body 100 and a watch strap 200. The watch body 100 includes a housing 20 and a touch screen 10 installed on the housing 20. The touch screen 10 can receive the user's touch signal to realize the interactive function. The housing 20 is used to provide support for the touch screen 10. The watch strap 200 of the smart watch is connected to the housing 20.

[0069] Figure 4b is a schematic diagram of the structure of the touch screen 10. As shown in Figure 4b, the housing 20 forms a receiving cavity Q with an opening, and the touch screen 10 can be accommodated in the receiving cavity Q. The display side of the touch screen module 1 exposes the opening for accommodating Q for display and interaction. Here, the touch screen module 1 can emit light to achieve display, and the display side of the touch screen module 1 is also the light-emitting side. The touch screen 10 includes a mainboard 2 and a touch screen module 1. The mainboard 2 is electrically connected to the touch screen module 1, and the mainboard 2, as a processing device of the electronic device, can control the display and touch of the touch screen module 1. It should be noted that the electrical connection relationship between the mainboard 2 and the touch screen module 1 of the touch screen 10 illustrated in Figure 4b is not illustrated.

[0070] Based on the touch interaction experience, the portability of wearable smart devices is an issue that users are more concerned about. The structure of the touch screen module 1 provided in the embodiment of the present application can occupy a smaller space, which is conducive to miniaturization of the device and improves the portability of the device.

[0071] Figure 5a illustrates the structure of a touch screen module 1 provided in an embodiment of the present application. As shown in Figure 5a, the touch screen module 1 includes a display module 11, a cover plate 12, and an optical detection module. The optical detection module includes multiple optical devices 13, which form a light detection network within the cover plate 12 of the touch screen module 1 through multiple light-receiving structures and multiple light-emitting structures. The display module 11 includes a screen 111 and a first circuit board 112, which is fixed to the non-light-emitting side of the screen 111. Exemplarily, the display module 11 also includes a first connecting portion 115 for connecting the screen 111 and the first circuit board 112. This first connecting portion 115 may be a flexible circuit board, one end of which is connected to the screen 111 and the other end of which is bent to the surface of the first circuit board 112 facing away from the screen 111 and connected to the first circuit board 112. The cover plate 12 is fixed to the light-emitting side of the screen 111. Light emitted by the display unit of the display module 11 can pass through the cover plate 12, allowing the user to capture image information. In Figure 5a, the cover plate 12 can be transparent glass for light to pass through, and the side of the cover plate 12 facing away from the screen body 111 is the light-emitting side of the touch screen module 1. It can be considered that the first circuit board 112, the screen body 111, and the cover plate 12 are stacked in sequence along the thickness direction of the touch screen module 1.

[0072] The first circuit board 112 includes a first portion 1121 that mates with the screen body 111 and a second portion 1122 that extends beyond the screen body 111. The first portion 1121 and the second portion 1122 are integrally formed. For example, the first portion 1121 and the second portion 1122 are separated by a dotted line. The first portion 1121 and the screen body 111 mate along the thickness of the touch screen module 1, and the shape of the first portion 1121 matches that of the screen body 111. Multiple optical devices 13 are disposed on the second portion 1122 of the first circuit board 112, facing the cover plate 12. It should be understood that the shape of the first circuit board 112 is not limited; it only needs to meet the layout requirements of the multiple optical devices 13 and the layout requirements of the electronic device. Once the optical devices 13 are secured to the second portion 1122 of the first circuit board 112, they do not need to extend beyond the edge of the first circuit board 112. Fixing the optical device 13 to the first circuit board 112 can achieve the integrated integration of the optical device 13 and the first circuit board 112. There is no need to add a structure for fixing the optical device 13 and a process for fixing the optical device 13. The architecture of the touch screen module 1 is simplified, the volume and weight of the touch screen module 1 can be reduced, and the process of waterproofing and sealing the touch screen module 1 is simpler.

[0073] As shown in FIG5 b , multiple optical devices 13 are spaced apart and arranged around the screen 111. A gap exists between each optical device 13 and the screen 111, so that the optical devices 13 do not contact the screen 111. It should be noted that the gap between the optical devices 13 and the screen 111 does not include gaps caused by process tolerances. In the embodiment of the present application, the gap between the optical devices 13 and the screen 111 satisfies the requirement of non-interference between the screen 111 and the optical devices 13 on the first circuit board 112 during the manufacturing process.

[0074] As shown in FIG5b , to avoid the first connection portion 115 or other devices such as antennas, the optical device 13 is not located along the entire edge of the first circuit board 112. The first circuit board 112 reserves some keep-out areas B. For example, the location where the first connection portion 115 for connecting the screen 111 and the first circuit board 112 passes is one of the keep-out areas B.

[0075] Figure 5c is a schematic partial cross-sectional view of the touch screen module 1. In a direction perpendicular to the thickness of the touch screen module 1, i.e., in the plane of the screen body 111, the second portion 1122 of the first circuit board 112 extends beyond the edge of the screen body 111. The projection of the screen body 111 onto the first circuit board 112 corresponds to the area where the first portion 1121 of the first circuit board 112 is located. Multiple optical devices 13 are affixed to the side of the second portion 1122 of the first circuit board 112 facing the cover plate 12. The term "in a direction perpendicular to the thickness of the touch screen module 1" can also be understood as the radial direction of the touch screen module 1.

[0076] Figure 6 illustrates a partial cross-sectional view of the touch screen module 1. As shown in Figure 6, along the thickness direction of the touch screen module 1, each optical device 13 is located between the first circuit board 112 and the cover plate 12. The height H1 of the optical device 13 is less than the distance H0 between the first circuit board 112 and the cover plate 12. The placement of the optical devices 13 does not increase the thickness of the touch screen module 1. In some embodiments, placing the optical devices 13 between the first circuit board 112 and the cover plate 12 can increase the thickness of the touch screen module 1 by more than 0.3 mm.

[0077] Continuing with Figure 6 , the optical device 13 is fixed to the surface of the second portion 1122 of the first circuit board 112 facing the cover plate 12. The first portion 1121 of the first circuit board 112 is located near the center of the first circuit board 112, while the second portion 1122 is located near the edge of the first circuit board 112. In a direction perpendicular to the thickness of the touch screen module 1, for example, a distance D0 is defined between the edge of the second portion 1122 away from the first portion 1121 and the screen body 111. With reference to a direction from the center of the first circuit board 112 toward the edge of the first circuit board 112, the optical device 13 includes a first edge located near the edge of the first circuit board 112, a distance D1 between the first edge and the edge of the first circuit board 112, and a distance D2 between the optical device 13 and the screen body 111. Both distances D1 and D2 are less than distance D0, and both distances D1 and D2 are greater than or equal to zero. The smaller the spacing D0, the better. The smaller the spacing D1, the better. The size of the second portion 1122 can minimize the increase in the size of the first circuit board 112 while ensuring space for the optical device 13. This reduces the size of the non-display area of ​​the touch screen module 1 and thus reduces black edges. The spacing D2 needs to ensure that the optical device 13 does not structurally interfere with the screen body 111 during the manufacture of the touch screen module 1. When the electronic device includes an antenna, such a configuration of the optical device 13 can reduce the encroachment on the antenna's clearance size. In some embodiments, the radial dimension of the touch screen module 1 can be increased by approximately 2 mm.

[0078] During specific implementation, in order to minimize the area of ​​the non-display region of the touch screen module 1 as much as possible, a small-sized optical device 13 may be selected.

[0079] Based on the above embodiment, the optical device 13 is arranged between the first circuit board 112 and the cover plate 12, and the light emitted by a part of the optical device 13 for emitting light needs to enter the cover plate 12 and be reflected multiple times inside the cover plate 12 to form a light detection network. For example, as shown in Figure 7, the cover plate 12 has a relative light-emitting surface a1 and a backlight surface a2, and the light-emitting side of the cover plate 12 is formed with a reflective surface F inclined toward the light-emitting surface a1, and the reflective surface F is used to reflect light. Of course, the structure of the cover plate 12 is only an example, and the structure for forming the reflective surface F may have other implementation methods, which are not limited in the embodiment of the present application. In the embodiment of the present application, the optical device 13 forms a light detection network inside the cover plate, so that the application of the touch screen module 1 is less affected by the outside world and can be used outdoors and underwater in more complex environments.

[0080] The multiple optical devices 13 in the touch screen module 1 provided in the embodiment of the present application include multiple light emitting devices 131 and multiple light receiving devices 132. The light emitting devices 131 are used to emit light, and the light receiving devices 132 are used to receive light. Figure 8 illustrates a schematic diagram of the working principle of the touch screen module 1. Figure 8 illustrates a light emitting device 131 and a light receiving device 132. The light emitted by the light emitting device 131 can be received by the light receiving device 132. The light emitted by the light emitting device 131 is emitted to the cover plate 12 and reflected by the reflective surface F of the cover plate 12. The reflected light is reflected multiple times in the cover plate 12 and then emitted to the first circuit board 112 and captured by the light receiving device 132. When the user's finger or stylus touches the light emitting surface a1 of the cover plate 12, it will change the reflection path of the light in the cover plate 12. The touch point can be determined by analyzing and comparing the reflection path.

[0081] It should be noted that for any light emitting device 131, the light beam formed by the light emitted by it can be considered to have a three-dimensional divergence with a certain angle around the optical axis. Figure 8 only illustrates the optical axis direction of the light emitting device 131. In actual applications, the light emitted by any light emitting device 131 is dispersed and can be received by multiple light receiving devices 132. In specific implementations, light emitting devices 131 with different divergence angles can be selected as needed.

[0082] When arranging multiple optical devices 13 in the touch screen 10, the layout of the multiple light emitting devices 131 and the multiple light receiving devices 132 needs to consider many factors. On the one hand, the light detection network composed of multiple optical devices 13 should basically cover the touch display area of ​​the touch screen 10, reduce the detection blind area of ​​the light detection network, and meet the requirements of touch sensitivity and accuracy. Here, the maximum size of the light detection blind area is preferably less than 6mm. On the other hand, under the premise of meeting touch performance, the arrangement of multiple optical devices 13 can appropriately reduce the use of devices, saving space and cost. Among them, when considering touch sensitivity and accuracy, it is also possible to combine the different interaction frequencies of different areas of the touch screen 10 during application to arrange devices with different densities in different areas. In addition, the layout of the optical devices 13 also needs to avoid other structures of the electronic device, such as antennas, device pads, cameras, etc. Areas where these devices are set or areas where structural interference with these devices may occur are designated as no-go areas and optical devices 13 are not set.

[0083] Based on the layout concept of the above-mentioned optical device 13, taking a 1.5-inch circular touch screen module 1 as an example, FIG9 illustrates a layout of multiple light emitting devices 131 and multiple light receiving devices 132. Taking the electronic device shown in FIG4a as an example, the touch screen module 1 is roughly circular, and the multiple light emitting devices 131 and the multiple light receiving devices 132 are distributed on a circle that matches the screen body 111 of the touch screen module 1 according to the design. For ease of understanding, the light emitting device 131 is indicated by a shaded circle, and the light receiving device 132 is indicated by a white square. The touch screen module 1 also includes some forbidden areas distributed on the circle, indicated by dotted boxes, and no light emitting device 131 or light receiving device 132 is arranged in the forbidden areas.

[0084] As shown in FIG9 , the circle is divided into areas using a matrix grid. Each dotted cell can be used to arrange a touch unit, and the size of the cell is also the size of the touch unit. The layout of the multiple light emitting devices 131 and the multiple light receiving devices 132 is designed so that the light emitted by each light emitting device 131 can be received by at least one light receiving device 132. The light path formed by the light emitted by the multiple light emitting devices 131 and the light received by the multiple light receiving devices 132 is a light detection network. The light detection network can cover the matrix grid of the touch screen module 1 so that at least one light passes through each cell, and any two adjacent cells have different light combinations to ensure touch accuracy. For example, as shown in FIG9 , the number of light emitting devices 131 is 2, the number of light receiving devices 132 is 2, and the two light emitting devices 131 and the two light receiving devices 132 are arranged relative to each other. The light emitted by each light emitting device 131 can be received by two light receiving devices 132. The light path formed by the emitted light of the two light emitting devices 131 and the received light of the two light receiving devices 132 can form a light detection network, and different light passes through each dotted cell. When the user's finger or stylus touches a certain part of the display module 11, it will block the transmission of light at that place, causing the signal received by the light to change, thereby realizing the recognition of the touch signal. The number of light emitting devices 131 and the number of light receiving devices 132 can both be more. By increasing the number of light emitting devices 131 and light receiving devices 132 and increasing the cross density of the light detection network, the touch coordinates of the user's finger or stylus can be judged more accurately to realize point reporting.

[0085] It should be understood that in specific applications, the number and position of the light emitting devices 131 and the light receiving devices 132 can be adjusted as needed, so that the light density can be appropriately increased or decreased to correspond to different spatial resolutions and fault tolerances.

[0086] Specifically, during the implementation process, each light emitting device 131 and each light receiving device 132 included in the multiple optical devices 13 are designed with a preset divergence angle and light path. If an optical receiving device 132 is not preset to receive the light emitted by an adjacent optical emitting device 131, in order to prevent the light emitted by the optical emitting device 131 from being received by the adjacent optical receiving device 132 and causing cross-light interference, as shown in FIG10a, a light blocking structure 18 can be provided between the adjacent light emitting devices 131 and the light receiving devices 132. The light blocking structure 18 can prevent cross-light interference. The material of the light blocking structure 18 can be light-shielding foam. The light blocking structure 18 can be clamped between the cover plate 12 and the first circuit board 112, and the light emitting device 131 and the light receiving device 132 are isolated along the thickness direction of the touch screen module 1 to achieve light blocking.

[0087] Of course, a light-blocking structure 18 can also be provided between two adjacent light-emitting devices 131, or between two adjacent light-receiving devices 132, to reduce light interference between adjacent optical devices 13. Alternatively, the light-blocking structure 18 can be provided at other locations as needed as long as the light-blocking effect can be achieved. Therefore, in the touch screen module 1 provided in the embodiment of the present application, a light-blocking structure 18 can be provided between at least two adjacent optical devices 13 in order to reduce light interference.

[0088] FIG10b illustrates a possible distribution state of the light-blocking structure 18. Using FIG10b as a reference, examples are provided for describing possible applications of the light-blocking structure 18. There may be multiple light-blocking structures 18, and different light-blocking structures 18 may be positioned at different locations according to different usage requirements. In the present embodiment, light-blocking structures 18a, 18b, 18c, and 18d are used as examples to illustrate light-blocking structures 18 at different locations.

[0089] Exemplarily, a light blocking structure 18 may be provided between two adjacent light emitting devices 131 , for example, a light blocking structure 18 a is provided between two adjacent light emitting devices 131 .

[0090] For example, a light blocking structure 18 may be provided between adjacent light receiving devices 132 and light emitting devices 131 . For example, a light blocking structure 18 b is provided between an adjacent light emitting device 131 and a light receiving device 132 .

[0091] For example, a light blocking structure 18 may be provided between two adjacent light receiving devices 132 , for example, a light blocking structure 18 c is provided between two adjacent light receiving devices 132 .

[0092] For example, when one of the optical devices 13 may be interfered with by light from another optical device 13 that is separated by at least one optical device 13, that is, the two optical devices 13 that interfere with each other are not adjacent, light blocking can also be achieved by providing a light blocking structure 18 at any empty space between the two optical devices 13. For example, the light emitting device 131a is adjacent to the light emitting device 131b, and the light emitting device 131b is adjacent to the light receiving device 132a. To prevent the light emitted by the light emitting device 131a from being received by the light receiving device 132a, a light blocking structure 18d can be provided between the light receiving device 132a and the light emitting device 131b. The light blocking structure 18d can also be provided between the light emitting device 131b and the light emitting device 131a.

[0093] It should be understood that the shape and setting position of the light-blocking structure 18 in FIG. 10 b are merely examples. In specific applications, the light-blocking structure 18 can be set at a preset position according to requirements.

[0094] In some embodiments, as shown in FIG11a , the first circuit board 112 includes connecting wires 1123 for connecting the plurality of optical devices 13. These connecting wires 1123 can be considered part of the first circuit board 112. In specific implementations, the connecting wires 1123 can be metal wires or metal layers. The shape of the connecting wires 1123 is merely an example.

[0095] Specifically, for multiple optical devices 13, the number and connection methods of the connecting wires 1123 may be various. For example, the number of connecting wires 1123 may be equal to the number of optical devices 13, with each connecting wire 1123 connected to a corresponding optical device 13. Alternatively, the number of connecting wires 1123 may be multiple but less than the number of optical devices 13, and each connecting wire 1123 may be electrically connected to one or more optical devices 13. In this case, the optical devices 13 connected to the same connecting wire 1123 are connected in series. Of course, there are many more possible line-of-sight configurations for the connecting wires 1123 and the optical devices 13, which can be configured as needed and will not be detailed here.

[0096] Figure 11b shows a partial cross-sectional view of the touch screen module 1, illustrating a connecting line 1123 and an optical device 13. The edge of the second portion 1122 of the first circuit board 112, perpendicular to the thickness of the touch screen module 1, facing away from the first portion 1121, is the edge of the first circuit board 112. It can be considered that the direction from the second portion 1122 of the first circuit board 112 toward the first portion 1121 of the first circuit board 112 is the direction from the center of the first circuit board 112. The optical device 13 includes a first edge near the edge of the first circuit board 112, with a spacing D1 between the first edge and the edge of the first circuit board 112. The connecting line 1123 has a second edge, with a spacing D3 between the edge and the edge of the first circuit board 112. Exemplarily, spacing D3 is no less than spacing D1. The optical device 13 is positioned near the edge of the first circuit board 112 as indicated by point L. The layout range of the connecting line 1123 is located on the side of the point L away from the edge of the first circuit board 112. That is, in a direction perpendicular to the touch screen module 1, the connecting line 1123 does not further increase the size of the first circuit board 112. While the distance D1 between the optical device 13 and the edge of the first circuit board 112 does affect the size of the touch screen module 1, the effect of the connecting line 1123 on the size of the touch screen module 1 is negligible.

[0097] Continuing with Figures 11a and 11b , along the thickness direction of the touch screen module 1, the projection of the screen body 111 onto the cover plate 12 partially overlaps with the area where the connecting wire 1123 is located. In other words, the connecting wire 1123 and the screen body 111 can share a portion of the touch screen module 1's dimension perpendicular to the thickness direction, thereby reducing the amount of space where the first circuit board 112 extends beyond the screen body 111. This can reduce the impact of the connecting wire 1123 on the antenna's clearance when the electronic device is equipped with an antenna structure.

[0098] In the embodiment of the present application, the first circuit board 112 is connected to the screen body 111 via a first connecting portion 115. Specifically, as shown in FIG12a , which is a partial cross-sectional structural diagram of the touch screen module 1, the screen body 111 includes a second circuit board 1111, which is connected to the first circuit board 112 via a first connecting portion 115. For example, the first circuit board 112 is a rigid circuit board, the second circuit board 1111 is a rigid circuit board, and the first connecting portion 115 is a flexible circuit board that can be bent. The first circuit board 112 and the second circuit board 1111 can be electrically connected via the flexible first connecting portion 115.

[0099] In some possible implementations, as shown in FIG12b , the first connection portion 115 and the second circuit board 1111 have an integral structure, and the first connection portion 115 can be considered to be a flexible structure extending from the second circuit board 1111 for connecting to the first circuit board 112. Here, the first circuit board 112 can be a rigid circuit board or a flexible circuit board, and the second circuit board 1111 can be a flexible circuit board or a rigid circuit board.

[0100] In other possible implementations, as shown in Figure 12c, the first connecting portion 115 includes a flexible portion 1151 and a rigid portion 1152 in an integrated structure. The flexible portion 1151 may be a flexible circuit board, and the rigid portion 1152 may be a rigid circuit board. The rigid portion 1152 is attached to the surface of the first circuit board 112 facing away from the screen body 111, and the flexible portion 1151 is bendably connected between the rigid portion 1152 and the second circuit board 1111. Here, the first circuit board 112 may be a rigid circuit board or a flexible circuit board, and the second circuit board 1111 may be a flexible circuit board or a rigid circuit board.

[0101] In yet other possible implementations, as shown in FIG12d , the first connecting portion 115 includes a flexible portion 1151 and a rigid portion 1152. The flexible portion 1151 and the second circuit board 1111 are integrally formed, and the flexible portion 1151 can be considered as a portion extending from the second circuit board 1111. Here, the first circuit board 112 can be a rigid circuit board or a flexible circuit board, and the second circuit board 1111 can be a flexible circuit board or a rigid circuit board.

[0102] Of course, the above embodiment is only an exemplary description of the connection method between the first circuit board 112 and the screen body 111 through the first connecting portion 115. During specific preparation, a suitable circuit board type and connection method can be selected to meet manufacturing requirements.

[0103] In some embodiments, as shown in FIG13a, the optical detection module further includes an optical detection driver 14, which is disposed on a side of the first circuit board 112 facing away from the screen body 111. The optical detection driver 14 is electrically connected to the plurality of optical devices 13 via the first circuit board 112 and is configured to drive the plurality of optical devices 13. When most or all of the components of the optical detection module are disposed on the first circuit board 112, the touch screen module 1 and the main board 2 can be arranged in staggered layers to minimize or eliminate the main board area occupied.

[0104] The first circuit board 112 includes a second connection portion 1124 for connecting the mainboard 2 and the display module 11. This second connection portion 1124 can be connected to the mainboard 2 via a board-to-board connector or a zero-insertion-force connector. Both the optical detection driver 14 and the first circuit board 112 are electrically connected to the mainboard 2 via this second connection portion 1124. The entire touch screen module 1 only requires a single second connection portion 1124 for electrical connection to the mainboard 2, reducing the number of connecting pins, resulting in a more streamlined structure and conserving space within the touch screen module 1.

[0105] In some embodiments, as shown in Figure 13b , the multiple optical devices 13 of the optical detection module are electrically connected to the second connection portion 1124 via the first circuit board 112. In this structure, the optical detection driver device 14 is omitted. After the touch screen module 1 is connected to the mainboard 2 via the second connection portion 1124, as shown in Figure 13c , the driver devices already included in the mainboard 2 can be used to drive the optical devices 13, further streamlining the structure of the touch screen module 1.

[0106] In Figure 13c, the second connection portion 1124 of the touch screen module 1 is connected to the motherboard 2 via connector 3. Connector 3 can be a board-to-board (BTB) connector to improve signal transmission capabilities. Alternatively, connector 3 can be a zero insertion force (ZIF) connector. This connector design eliminates the need for applying additional force when inserting and removing the connector, resulting in higher reliability and ease of use.

[0107] In the following embodiments, the structure of the touch screen module 1 is exemplarily introduced by taking the implementation of the optical detection module shown in FIG13 b as an example.

[0108] In some embodiments, the display module 11 includes a screen driver chip 113. As shown in FIG14a , the screen driver chip 113 is disposed on the surface of the first circuit board 112, which faces away from the first circuit board 112, where the first connecting portion 115 abuts against the first circuit board 112. The screen driver chip 113 is disposed on the side of the first circuit board 112 facing away from the screen 111 and is connected to the screen 111 via the first connecting portion 115.

[0109] In some embodiments, as shown in FIG14b , the display module 11 includes a peripheral driver component 114, which is disposed on a side of the first circuit board 112 facing away from the screen 111. The peripheral driver component 114 is connected to the screen driver chip 113 via the first circuit board 112 and a first connection portion 115. The peripheral driver component 114 includes at least one component or a combination of multiple components selected from the group consisting of a resistor, a capacitor, and an inductor, for use in conjunction with the screen driver chip 113.

[0110] Of course, the touch screen module 1 and touch screen 10 provided in the embodiments of the present application may also be used in electronic devices of other shapes. FIG15 illustrates a touch screen module 1 used in a square electronic device. It should be understood that the structure and arrangement of the components of the touch screen module 1 can be adjusted based on the shape of the touch screen module 1.

[0111] Taking a wearable smartwatch as an example, Figure 15 shows a partial cross-sectional structure of the watch body 100 of the wearable smartwatch. As shown in Figure 16, the first circuit board 112 in the touchscreen module 1 is connected to the mainboard 2 via a connector 3. The multiple optical components 13 of the touchscreen module 1 are located on the side of the first circuit board 112 facing the cover 12, and do not extend beyond the edge of the first circuit board 112. This occupies a relatively small space, reducing the black border of the touchscreen 10 and leaving more space for other components of the wearable smartwatch. For example, the small footprint of the touchscreen module 1 allows for a sufficient clearance area when an antenna is installed within the housing 20, thereby increasing the antenna's clearance benefit. The mainboard 2 of the electronic device is also equipped with multiple electrical components 21, which require avoidance during the layout of the touchscreen module 1. Figure 15 also illustrates the decorative ring 40 of the watch body 100. The shape and position of the decorative ring 40 are for illustrative purposes only.

[0112] In summary, the touch screen module 1 provided in the embodiment of the present application and applied to the touch screen 10 integrates and fixes a plurality of optical devices 13 for forming a light detection network on the first circuit board 112 of the display module 11. There is no need to set an additional circuit board and fixing structure for the optical device 13, thereby simplifying the structure of the touch screen module 1. Specifically, the optical device 13 is set on the surface of the first circuit board 112 facing the cover plate 12, so that the optical device 13 is accommodated between the first circuit board 112 and the cover plate 12, utilizing the space in the thickness direction of the touch screen module 1 itself, and does not increase the thickness of the touch screen module 1. In addition, the optical device 13 does not extend beyond the edge of the first circuit board 112, and the setting of the optical device 13 does not occupy the space of the touch screen module 1 itself perpendicular to the thickness direction, thereby reducing the area occupied by the black edge. For the entire touch screen module 1, while ensuring the touch performance, the structure is saved and the occupied space is reduced, which is conducive to reducing the volume of the touch screen 10, making it easier to achieve miniaturization of electronic devices using the touch screen 10. The touch screen module 1 occupies a small space, which can reserve more space for arranging other components in the electronic device to achieve better performance.

[0113] The above are only specific embodiments of the present application, but the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A touch screen module, characterized in that: Including display module, cover plate and optical detection module; The display module includes a screen body and a first circuit board, wherein the first circuit board is fixed to the non-light-emitting side of the screen body, the non-light-emitting side is opposite to the light-emitting side of the screen body, and the first circuit board includes a first portion that is in contact with the screen body and a second portion that extends beyond the screen body; The cover plate is arranged on the front side of the screen body; The optical detection module includes a plurality of optical devices, which are arranged on the second portion of the first circuit board toward the cover plate, and are spaced around the screen body and have gaps with the screen body; The plurality of optical devices include a plurality of light emitting devices and a plurality of light receiving devices. The light emitting devices are used to emit light, and the light receiving devices are used to receive light emitted by the light emitting devices and transmitted through the cover plate.

2. The touch screen module according to claim 1, wherein: The first circuit board includes connecting lines for connecting the plurality of optical devices; The connecting line includes a first edge, the optical device includes a second edge, and a distance between the first edge and an edge of the first circuit board is not less than a distance between the second edge and an edge of the first circuit board.

3. The touch screen module according to claim 2, wherein: The projection area of ​​the screen body on the cover plate partially overlaps with the area where the connecting line is located.

4. The touch screen module according to any one of claims 1 to 3, wherein: The distance between any two adjacent optical devices is less than or equal to 20 mm.

5. The touch screen module according to any one of claims 1 to 4, characterized in that: A light-blocking structure is provided between at least two adjacent optical devices.

6. The touch screen module according to any one of claims 1 to 5, characterized in that: The screen body includes a second circuit board, and the touch screen module includes a first connecting portion for connecting the first circuit board and the second circuit board. The optical device is not provided in the projection area of ​​the second part of the circuit board of the first connecting portion.

7. The touch screen module according to claim 6, wherein: The first connecting portion includes a flexible portion and a rigid portion. The rigid portion is attached to a surface of the first circuit board facing away from the screen body, and the flexible portion is connected between the rigid portion and the second circuit board.

8. The touch screen module according to claim 7, wherein: The flexible portion and the rigid portion have an integrated structure; or the flexible portion and the second circuit board have an integrated structure.

9. The touch screen module according to any one of claims 6 to 8, wherein: The first connecting portion and the second circuit board have an integrated structure, and the first connecting portion is a flexible circuit board.

10. The touch screen module according to any one of claims 6 to 9, characterized in that: The touch screen module further includes a screen driving chip, and the screen driving chip is disposed on a surface of the first circuit board facing away from the first connecting portion and the first circuit board bonding portion.

11. The touch screen module according to claim 10, wherein: The display module includes a peripheral driver component, which is arranged on a surface of the first circuit board facing away from the screen body, and is electrically connected to the screen body driver chip through the first circuit board.

12. The touch screen module according to any one of claims 1 to 11, wherein: The touch screen module further includes a second connecting portion, which is used to connect the first circuit board and the main board. The multiple optical devices are electrically connected to the second connecting portion through the first circuit board.

13. The touch screen module according to any one of claims 1 to 12, wherein: The optical detection module includes an optical detection driver device, which is disposed on a surface of the first circuit board facing away from the screen body. The optical detection driver device is electrically connected to the plurality of optical devices through the first circuit board.

14. A touch screen, characterized in that: The touch screen comprises a touch screen module and a mainboard according to any one of claims 1 to 12; The touch screen module includes a second connecting portion, the display module and the optical detection module are electrically connected to the second connecting portion respectively, and the second connecting portion is connected to the mainboard through a connector.

15. The touch screen according to claim 14, wherein: The connector is a board-to-board connector or a zero insertion force connector.

16. A touch screen, characterized in that: The touch screen comprises a mainboard and a touch screen module according to claim 13; The touch screen module includes a second connecting portion, the display module is electrically connected to the second connecting portion, and the second connecting portion is connected to the mainboard via a connector.

17. The touch screen according to claim 16, wherein: The connector is a board-to-board connector or a zero insertion force connector.

18. An electronic device, characterized in that: The electronic device includes a housing and a touch screen according to any one of claims 14 to 17, the touch screen module is arranged in the housing, and the surface of the cover plate facing away from the screen body is exposed from the housing.

19. The electronic device according to claim 18, wherein: The electronic device includes an antenna arranged in the housing, and the touch screen module avoids a clearance area of ​​the antenna.

20. A wearable smart device, characterized in that: The wearable smart device includes a watch body and a watch strap, wherein the watch strap is connected to the watch body; The watch body includes the electronic device according to claim 18 or 19; or, the watch body includes the touch screen according to any one of claims 14-17.

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