Touch structure, touch apparatus, electronic device and preparation method

Abstract

A touch structure, a touch apparatus, an electronic device and a preparation method. The touch apparatus comprises: a cover plate (101), a touch layer (103), a shielding layer (105), biometric recognition modules (106, 108), a health recognition module (107), and base plates (109), wherein the touch layer (103) comprises a substrate layer (1032) and electrode layers (1031, 1033) adjacent to the substrate layer (1032), the electrode layers (1031, 1033) being provided with non-transparent electrodes; a first transparent adhesive (102) is bonded between the cover plate (101) and the touch layer (103); a second transparent adhesive (104) is bonded between the touch layer (103) and the shielding layer (105); the biometric recognition modules (106, 108) are located below the shielding layer (105), and are attached to a light guide member (111); the light guide member (111) is bonded to the shielding layer (105) by means of a first adhesive (112); light-emitting elements (110) are bonded to the light guide member (111) by means of third adhesives (114); and the cover plate (101) above the biometric recognition modules (106, 108) is provided with light-transmitting regions. The ratio of the area of the non-transparent electrodes directly above the biometric recognition modules (106, 108) to the area of the electrode layers (1031, 1033) directly above the biometric recognition modules (106, 108) is a first ratio, which is not equal to 0, such that light emitted by the biometric recognition modules (106, 108) or light emitted by the light-emitting elements (110) around the biometric recognition modules (106, 108) can pass through the regions in the electrode layers (1031, 1033) where no non-transparent electrode is provided, so as to reach one light-transmitting region of the cover plate (101).

Description

Touch structure, touch device, electronic device and manufacturing method Technical Field

[0001] This application relates to the field of touch technology, and in particular to a touch structure, touch device, electronic device, and manufacturing method. Background Technology

[0002] As an important component of electronic devices such as laptops, touchpads have been given more user interaction needs. Touchpads on electronic devices have touch areas where users can control the device by touching and pressing on these areas. Conventional touch detection functions are relatively simple; however, when combined with biometric recognition modules, touchpads can not only provide the necessary touch functions but also further enable fingerprint detection.

[0003] When the touchpad is assembled with the biometric recognition module, the electrode layer of the touch layer above the biometric recognition module is a non-transparent electrode, such as copper foil. The copper foil will affect the upward transmission of light emitted by the biometric recognition module below the touchpad, or affect the upward transmission of light emitted by the light-emitting components around the biometric recognition module below the touchpad. As a result, the biometric recognition module cannot be placed below the touchpad.

[0004] In traditional solutions, ITO (Indium Tin Oxide) transparent electrodes can be used as touch-press electrodes. This does not affect the upward transmission of light emitted by the biometric recognition module, or the upward transmission of light emitted by the light-emitting components around the biometric recognition module under the touchpad. However, due to the scarcity of indium resources, this traditional solution has high material costs, and the ITO process is also complex, resulting in high manufacturing and production equipment costs. Summary of the Invention

[0005] This application relates to the field of touch technology, and more particularly to a touch structure, touch device, electronic device and manufacturing method, which enables the light emitted by the biometric recognition module in the touch structure or the light emitting energy around the biometric recognition module to be transmitted upward, while also reducing costs.

[0006] In a first aspect, a touch structure is provided, comprising: a touch layer, the touch layer including a substrate layer and an electrode layer adjacent to the substrate layer, the electrode layer being configured with non-transparent electrodes; a touch circuit board disposed below the touch layer, the touch circuit board being electrically connected to the touch layer to detect touch; a touch structure being mounted below a cover plate; the touch structure being mounted with a biometric recognition module, the biometric recognition module being located below the touch layer of the touch structure; a cover plate above the biometric recognition module having a light-transmitting area; the area of ​​the non-transparent electrode directly above the biometric recognition module being proportional to the area of ​​the electrode layer directly above the biometric recognition module being a first ratio, such that light emitted by the biometric recognition module or light emitted by light-emitting components around the biometric recognition module can pass through the area of ​​the electrode layer without non-transparent electrodes to reach the light-transmitting area of ​​the cover plate; the first ratio is not equal to 0.

[0007] In one possible implementation, the first proportion is not less than 4%; the first proportion is not greater than 48.7%.

[0008] In one possible implementation, the first proportion is not less than 9% and the first proportion is not greater than 47.4%.

[0009] In one possible implementation, the first proportion is 14.3%.

[0010] In one possible implementation, the area of ​​the non-transparent electrode not directly above the biometric recognition module is a first ratio to the area of ​​the electrode layer not directly above the biometric recognition module; or, the area of ​​the non-transparent electrode not directly above the biometric recognition module is a second ratio to the area of ​​the electrode layer not directly above the biometric recognition module; the second ratio is greater than the first ratio.

[0011] In one possible implementation, the non-transparent electrode directly above the biometric identification module has an opening, allowing light emitted from the biometric identification module or light emitted from light-emitting components around the biometric identification module to pass through the opening and reach the light-transmitting area of ​​the cover plate; the light-transmitting area of ​​the cover plate is located directly above the biometric identification module.

[0012] In one possible implementation, the non-transparent electrode directly above the biometric identification module is a hollow electrode structure, so that the light emitted by the biometric identification module or the light emitted by the light-emitting components around the biometric identification module can pass through the hollow area of ​​the non-transparent electrode to the light-transmitting area of ​​the cover plate.

[0013] In one possible implementation, the openings are spaced-apart openings, and the shape of the openings is either circular or rectangular.

[0014] In one possible implementation, the width of the non-transparent electrode directly above the biometric identification module is less than or equal to a target width threshold, so that the light emitted by the biometric identification module or the light emitted by the light-emitting components around the biometric identification module can pass through the gap formed between the non-transparent electrodes above the biometric identification module to reach the light-transmitting area of ​​the cover plate; the target width threshold is 1 mm; and the width of the non-transparent electrode directly above the biometric identification module is greater than or equal to 0.03 mm.

[0015] In one possible implementation, the linewidth of the non-transparent electrode directly above the biometric identification module is 0.1 mm.

[0016] In one possible implementation, the electrode layer includes a first electrode layer and a second electrode layer that are respectively adjacent to the upper and lower surfaces of the substrate layer. The first electrode layer is used to provide a first non-transparent electrode, and the second electrode layer is used to provide a second non-transparent electrode. The openings in the first electrode layer and the openings in the second electrode layer are connected in the vertical direction so that light can pass through the first electrode layer and the second electrode layer.

[0017] The area of ​​the first non-transparent electrode directly above the biometric recognition module is in the first ratio to the area of ​​the first electrode layer directly above the biometric recognition module, and the area of ​​the second non-transparent electrode directly above the biometric recognition module is in the first ratio to the area of ​​the second electrode layer directly above the biometric recognition module, so that the light emitted by the biometric recognition module or the light emitted by the light-emitting components around the biometric recognition module can pass through the areas in the first and second electrode layers where no non-transparent electrodes are provided to reach the light-transmitting area of ​​the cover plate.

[0018] Secondly, a touch device is provided, comprising:

[0019] The touch structure, the cover plate, and the biometric identification module are as described in any of the preceding claims; the touch device further includes a shielding layer, a first transparent adhesive, and a second transparent adhesive, wherein the first transparent adhesive is bonded between the cover plate and the touch layer, the second transparent adhesive is bonded between the touch layer and the shielding layer, and the biometric identification module is bonded to the shielding layer; the light emitted by the biometric identification module or the light emitted by the light-emitting components around the biometric identification module can pass through the light-transmitting area of ​​the shielding layer to reach the light-transmitting area of ​​the cover plate.

[0020] In one possible implementation, the cover plate includes a glass cover plate, the shielding layer is a transparent material layer, and the light emitted by the biometric identification module or the light emitted by the light-emitting element around the biometric identification module passes through the transparent material layer to reach the light-transmitting area of ​​the cover plate.

[0021] In one possible implementation, the cover plate includes a Mylar cover plate, the shielding layer is a metal reinforcing plate, and a light guide material is disposed directly above the biometric identification module and directly above the light-emitting components around the biometric identification module to serve as the light-transmitting area of ​​the shielding layer. The light-transmitting area of ​​the shielding layer is formed by filling a portion of the metal reinforcing plate with the light guide material.

[0022] In one possible implementation, the light-transmitting area of ​​the cover plate includes a first light-transmitting area, the biometric identification module includes an ultrasonic fingerprint identification module, and the light emitted by the light-emitting element around the ultrasonic fingerprint identification module passes through the area in the electrode layer where no non-transparent electrode is provided to reach the first light-transmitting area.

[0023] In one possible implementation, the touch device further includes a first adhesive, a second adhesive, a third adhesive, a light guide, and the light-emitting element; the ultrasonic fingerprint recognition module includes an ultrasonic fingerprint chip; the first adhesive is bonded between the transparent material layer and a first surface of the light guide; the second adhesive is bonded between a first region of a second surface of the light guide and the ultrasonic fingerprint chip; and the third adhesive is bonded between a second region of a second surface of the light guide and the light-emitting element; the second region is the periphery of the second surface of the light guide.

[0024] In one possible implementation, the bottom surface of the first light-transmitting area of ​​the cover is screen-printed with a pressing mark to indicate the fingerprint pressing area, the pressing mark including a fingerprint mark.

[0025] In one possible implementation, the light-transmitting area of ​​the cover plate includes a second light-transmitting area, the biometric identification module includes a health identification module, and the light emitted by the health identification module passes through the area in the electrode layer where no non-transparent electrodes are provided to reach the second light-transmitting area.

[0026] In one possible implementation, the touch device further includes a fourth adhesive, and the health recognition module includes a health detection circuit board, a photoelectric converter, and a light signal transmitter, wherein the photoelectric converter and the light signal transmitter are electrically connected to the health detection circuit board; the health detection circuit board is provided with an outer light shield and a spacer light shield, the spacer light shield is provided between the photoelectric converter and the light signal transmitter, and the outer light shield is provided around the health detection circuit board; at least one of the outer light shield and the spacer light shield is bonded to the transparent material layer with the fourth adhesive;

[0027] In one possible implementation, the bottom surface of the second light-transmitting area of ​​the cover plate is screen-printed with ink of the target color type.

[0028] In one possible implementation, the light-transmitting area of ​​the cover plate includes a first light-transmitting area, the biometric identification module includes an ultrasonic fingerprint identification module, and the light emitted by the light-emitting element around the ultrasonic fingerprint identification module passes through the area in the electrode layer where no non-transparent electrode is provided to reach the first light-transmitting area.

[0029] In one possible implementation, the touch device further includes a fifth adhesive, a sixth adhesive, and a light-emitting element; the ultrasonic fingerprint recognition module includes an ultrasonic fingerprint chip; the fifth adhesive is bonded between the light-guiding material directly above the biometric recognition module and the ultrasonic fingerprint chip; and the sixth adhesive is bonded between the light-guiding material directly above the light-emitting element surrounding the biometric recognition module and the light-emitting element.

[0030] In one possible implementation, the bottom surface of the first light-transmitting area of ​​the cover is screen-printed with a pressing mark to indicate the fingerprint pressing area, the pressing mark including a fingerprint mark.

[0031] In one possible implementation, the light-transmitting area of ​​the cover plate includes a second light-transmitting area, and the biometric identification module includes a health identification module. The light emitted by the health identification module passes through the area in the electrode layer where no non-transparent electrodes are provided to reach the second light-transmitting area.

[0032] In one possible implementation, the touch device further includes a seventh adhesive, and the health recognition module includes a health detection circuit board, a photoelectric converter, and a light signal transmitter, wherein the photoelectric converter and the light signal transmitter are electrically connected to the health detection circuit board respectively; the health detection circuit board is provided with an outer light shield and a spacer light shield, the spacer light shield is provided between the photoelectric converter and the light signal transmitter, and the outer light shield is provided around the health detection circuit board; at least one of the outer light shield and the spacer light shield is bonded to the light guide material provided directly above the health recognition module with the seventh adhesive;

[0033] In one possible implementation, the bottom surface of the second light-transmitting area of ​​the cover plate is screen-printed with ink of the target color type.

[0034] In one possible implementation, the touch surface of the cover plate is a frosted surface; or the touch surface of the light-transmitting area of ​​the cover plate is a non-frosted surface, and the other touch surfaces of the cover plate, excluding the light-transmitting area, are frosted surfaces.

[0035] Thirdly, an electronic device is provided, including a touch device as described in any of the preceding claims, or including a touch structure as described in any of the preceding claims.

[0036] Fourthly, a method for preparing a touch layer of a touch structure is provided. The touch structure is used to be assembled under a cover plate and is used to be assembled with a biometric identification module. The biometric identification module is located below the touch layer of the touch structure. The method includes: etching the non-transparent electrodes of the electrode layer of the touch layer according to the electrode circuit pattern; the ratio of the area of ​​the non-transparent electrode in the electrode layer directly above the biometric identification module to the area of ​​the electrode layer directly above the biometric identification module is a first ratio, so that the light emitted by the biometric identification module can pass through the area of ​​the electrode layer where no non-transparent electrode is provided to reach the light-transmitting area of ​​the cover plate, and the first ratio is not equal to 0.

[0037] In any of the above-mentioned solutions, a touch structure is provided, which includes a touch layer and a touch circuit board. The touch layer includes a substrate layer and an electrode layer adjacent to the substrate layer. The electrode layer is used to set non-transparent electrodes, and the area of ​​the non-transparent electrode directly above the biometric recognition module is in a first ratio to the area of ​​the electrode layer directly above the biometric recognition module. This allows light emitted by the biometric recognition module or light emitted by light-emitting components around the biometric recognition module to pass through the area of ​​the electrode layer without non-transparent electrodes to reach the light-transmitting area of ​​the cover plate. Compared with the prior art using ITO transparent electrodes, this application limits the proportion of non-transparent electrodes, allowing light emitted by the biometric recognition module or light emitted by light-emitting components around the biometric recognition module to pass through the area of ​​the electrode layer without non-transparent electrodes to reach the light-transmitting area of ​​the cover plate. This enables the light emitted by the biometric recognition module or light emitted by the light-emitting components around the biometric recognition module to be transmitted upwards. In addition, the embodiments of this application achieve touch detection through non-transparent electrodes, resulting in lower manufacturing costs in terms of manufacturing processes and materials. Attached Figure Description

[0038] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0039] Figure 1 is a schematic diagram of a pattern of the electrode layer in this application;

[0040] Figure 2 is a schematic diagram of a global opening scheme for a non-transparent electrode in the electrode layer according to an embodiment of this application;

[0041] Figure 3 is a schematic diagram of two partial opening schemes for non-transparent electrodes in an embodiment of this application;

[0042] Figure 4 is a schematic diagram of an electrode layer structure under one of the partial opening schemes in an embodiment of this application;

[0043] Figure 5 is a schematic diagram of an electrode layer structure under another partial opening scheme in one embodiment of this application;

[0044] Figure 6 is a comparative schematic diagram of an embodiment of this application, showing the difference between an untreated non-transparent electrode layer and a hollow solution.

[0045] Figure 7 is a comparative schematic diagram of the raw material stack of the touch layer and the touch layer obtained after etching in one embodiment of this application;

[0046] Figure 8 is an exploded structural diagram of a touch device using a glass cover in one embodiment of this application;

[0047] Figure 9 is an assembly structure diagram of a touch device using a glass cover in one embodiment of this application;

[0048] Figure 10 is an exploded structural diagram of a touch device using a Mylar cover plate in one embodiment of this application;

[0049] Figure 11 is an assembly structure diagram of a touch device using a Mylar cover plate in one embodiment of this application;

[0050] Figure 12 is a schematic diagram of the opening scheme for the non-transparent electrode in one embodiment of this application. Detailed Implementation

[0051] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts belong to the scope of protection of the present application. It should also be understood that the terms used in this specification are only for the purpose of describing specific embodiments.

[0052] Next, the technical solutions in the embodiments of the present application will be described in conjunction with the accompanying drawings of the specification.

[0053] The embodiments of the present application provide a touch control structure, a touch control device, an electronic device, and a method for preparing a touch control layer in the touch control structure. Among them, the touch control structure or the touch control device can be applied to a variety of different types of electronic devices. For example, the touch control structure or the touch control device provided in the embodiments of the present application can be applied to portable or mobile computing devices such as laptops and gaming devices, and can also be applied to other electronic devices such as automobiles. The embodiments of the present application do not make specific limitations.

[0054] In one embodiment, the embodiments of the present application provide a touch control structure. The touch control structure includes a touch control layer and a touch control circuit board. The touch control layer includes a substrate layer and an electrode layer adjacent to the substrate layer. The electrode layer is used to set non-transparent electrodes. It should be understood that the electrode layer of the touch control layer can be any Pattern pattern. As an example, the Pattern pattern of the electrode layer of the touch control layer in the embodiments of the present application includes but is not limited to the "king-shaped" Pattern pattern or other Pattern patterns that can meet the touch control performance, and no specific limitations are made. For example, as shown in FIG. 1, FIG. 1 is a schematic structural diagram of the "king-shaped" Pattern pattern. For the convenience of description, in the embodiments of the present application, the "king-shaped" Pattern pattern will be used as an example to exemplarily illustrate the electrode layer structure of the touch control layer in each subsequent embodiment, and no specific limitations are made.

[0055] In this embodiment, a touch circuit board is disposed below the touch layer, and the touch circuit board is electrically connected to the touch layer to detect touch; the touch structure is used to be assembled under the cover plate; the touch structure is used to be assembled with a biometric recognition module, and the biometric recognition module is located below the touch layer of the touch structure; the cover plate above the biometric recognition module is provided with a light-transmitting area; the area of ​​the non-transparent electrode directly above the biometric recognition module is in the proportion of the area of ​​the electrode layer directly above the biometric recognition module to a first proportion, so that the light emitted by the biometric recognition module or the light emitted by the light-emitting components around the biometric recognition module can pass through the area of ​​the electrode layer where no non-transparent electrode is provided to reach the light-transmitting area of ​​the cover plate, and the first proportion is not equal to 0.

[0056] The touch layer is the core of the touch structure. When a hand touches the touch layer, the electrode layer on the touch layer can locate the specific position of the finger. Based on the finger's position and specific operation (such as single click, double click, two-finger or three-finger swipe direction, etc.), the corresponding command is executed. Furthermore, the touch layer's touch positioning function can be used in conjunction with a biometric recognition module to realize the module's functions. For example, when a finger touches the cover plate directly above the biometric recognition module, it notifies the biometric recognition module to start working.

[0057] The touch circuit board is connected to the touch layer to detect touch. For example, the touch circuit board integrates the control circuitry required for touch control. In some embodiments, the touch circuit board may integrate control circuitry for a biometric recognition module, which can be connected to the touch circuit board via a connecting cable and then to the motherboard of an electronic device using this touch structure. The biometric recognition module is a module that implements biometric recognition functionality; it can also be directly electrically connected to the motherboard of an electronic device using this touch structure, and the specific connection is not limited.

[0058] It should be understood that if the electrode layer of the touch layer directly above the biometric recognition module is a non-transparent electrode, that is, the conductive electrode of the touch layer is opaque (for example, the non-transparent electrode can be copper foil or other non-transparent materials), it will affect the upward transmission of light emitted by the biometric recognition module below, or affect the upward transmission of light emitted by the light-emitting components around the biometric recognition module below. Therefore, in this embodiment, a touch structure is provided, which includes a touch layer and a touch circuit board. The touch layer includes a substrate layer and an electrode layer adjacent to the substrate layer. The electrode layer is used to set non-transparent electrodes, and the area of ​​the non-transparent electrode directly above the biometric recognition module is in a first ratio to the area of ​​the electrode layer directly above the biometric recognition module, so that the light emitted by the biometric recognition module or the light emitted by the light-emitting components around the biometric recognition module can pass through the area of ​​the electrode layer where no non-transparent electrode is set to reach the light-transmitting area of ​​the cover plate. As can be seen, compared with the existing technology that uses ITO transparent electrodes, the present application embodiment limits the proportion of non-transparent electrodes, so that the light emitted by the biometric recognition module or the light emitted by the light-emitting components around the biometric recognition module can pass through the area of ​​the electrode layer where no non-transparent electrodes are set to reach the light-transmitting area of ​​the cover plate. In addition, the present application embodiment achieves touch detection through non-transparent electrodes, which is more cost-effective.

[0059] In one embodiment, the first ratio is 4% to 48.7%, that is, the first ratio is not less than 4% and not greater than 48.7%. The area of ​​the non-transparent electrode directly above the biometric recognition module accounts for more than or equal to 4% of the area of ​​the electrode layer directly above the biometric recognition module, which enables the touch control to work normally to a certain extent. The area of ​​the non-transparent electrode directly above the biometric recognition module accounts for less than or equal to 48.7% of the area of ​​the electrode layer directly above the biometric recognition module, which enables the light emitted by the biometric recognition module or the light emitted by the light-emitting components around the biometric recognition module to effectively reach the light-transmitting area of ​​the cover plate through the area of ​​the electrode layer where no non-transparent electrode is provided.

[0060] For example, the non-transparent electrode is copper foil. The area with copper foil directly above the biometric recognition module accounts for 5% to 95% of the area without copper foil directly above the module. The area with copper foil accounts for less than or equal to 95% of the area without copper foil. This allows light emitted by the biometric recognition module, or light emitted by light-emitting components around the module, to effectively reach the light-transmitting area of ​​the cover plate through the copper-foil-free area in the electrode layer. The area with copper foil accounting for more than or equal to 5% of the copper-foil-free area ensures that the touchscreen functions normally.

[0061] Furthermore, the first proportion is not less than 9% and not greater than 47.4%. Taking a non-transparent electrode as a copper foil as an example, the area of ​​the copper foil directly above the biometric recognition module accounts for 10% to 90% of the area of ​​the area without copper foil directly above the biometric recognition module, and the area with copper foil accounts for less than or equal to 90% of the area without copper foil. This ensures that the light emitted by the biometric recognition module or the light emitted by the light-emitting components around the biometric recognition module can effectively reach the light-transmitting area of ​​the cover plate through the area without copper foil in the electrode layer. The area with copper foil accounts for more than or equal to 10% of the area without copper foil, which ensures sensitive touch performance. By limiting the range of the first proportion, this embodiment of the application ensures that both the touch structure and the biometric recognition module have good performance.

[0062] As shown in Figure 2, the first ratio is 14.3%. Taking the non-transparent electrode as copper foil as an example, the area with copper foil accounts for 14.3% of the area without copper foil. The area of ​​the copper foil directly above the biometric recognition module accounts for 16.7% of the area of ​​the area without copper foil directly above the biometric recognition module.

[0063] It should be noted that a biometric recognition module is located below the electrode pattern shown in Figure 2. In Figure 2, the area of ​​the non-transparent electrode directly above the biometric recognition module accounts for a first proportion of the area of ​​the electrode layer directly above the biometric recognition module. Similarly, the area of ​​the non-transparent electrode directly above the non-biometric recognition module accounts for a first proportion of the area of ​​the electrode layer directly above the non-biometric recognition module. That is, for the entire electrode layer shown in Figure 2, the area of ​​the non-transparent electrode accounts for a first proportion of the total electrode layer area. Thus, regardless of where the biometric recognition module is located below the touch layer, the light emitted by the biometric recognition module or the light emitted by the light-emitting components around the biometric recognition module can pass through the area of ​​the electrode layer without non-transparent electrodes to reach the light-transmitting area of ​​the cover plate.

[0064] In one embodiment, since the recognition area of ​​the biometric recognition module is often smaller than the touch recognition area, it is not necessary to limit the proportion of the non-transparent electrodes of the entire electrode layer to the first proportion. Alternatively, the proportion of the non-transparent electrodes directly above the biometric recognition module can be limited to the first proportion.

[0065] In this embodiment, the ratio of the area of ​​the non-transparent electrode not directly above the biometric identification module to the area of ​​the electrode layer not directly above the biometric identification module is a first ratio; or, the ratio of the area of ​​the non-transparent electrode not directly above the biometric identification module to the area of ​​the electrode layer not directly above the biometric identification module is a second ratio, where the second ratio is greater than the first ratio. The second ratio can be greater than 48.7%, for example, the ratio of the area with copper foil above the non-biometric identification module to the area without copper foil above the non-biometric identification module can be 95%.

[0066] As can be seen, the area of ​​the non-transparent electrode directly above the biometric recognition module is relatively small compared to the area of ​​the electrode layer directly above the biometric recognition module, while the area of ​​the electrode layer not directly above the biometric recognition module is relatively large. This ensures that the light emitted by the biometric recognition module has good transmittance, or that the light emitted by the light-emitting components around the biometric recognition module has good transmittance. Furthermore, the larger proportion of the area of ​​the non-transparent electrode in the non-biometric recognition area further effectively guarantees the touch performance of the touch layer, resulting in better touch control in the non-biometric recognition area.

[0067] It should be noted that, in order to ensure that the area of ​​the non-transparent electrode directly above the biometric recognition module is in proportion to the area of ​​the electrode layer directly above the biometric recognition module as described above, thereby guaranteeing light transmittance, various methods are provided in the embodiments of this application, including a scheme in which the non-transparent electrode is provided with an opening or a scheme in which the linewidth of the non-transparent electrode is narrowed. The specific methods are not limited and will be described below.

[0068] In one embodiment, the non-transparent electrode directly above the biometric recognition module is provided with openings, so that the light emitted by the biometric recognition module or the light emitted by the light-emitting components around the biometric recognition module can pass through the openings to the light-transmitting area of the cover plate. For example, in this embodiment, the non-transparent electrode directly above the biometric recognition module can be processed to have openings, so that the proportion of the area of the non-transparent electrode directly above the biometric recognition module to the area of the electrode layer directly above the biometric recognition module is the first proportion, allowing the light emitted by the biometric recognition module or the light emitted by the light-emitting components around the biometric recognition module to pass through the area of the electrode layer where no non-transparent electrode is provided to reach the light-transmitting area of the cover plate.

[0069] As an example, the non-transparent electrodes directly above and not directly above the biometric recognition module are both provided with openings, that is, the first proportion is equal to the second proportion. Or, in another example, only a partial area of the non-transparent electrode directly above the arrangement position of the biometric recognition module is provided with openings, that is, the second proportion is greater than the first proportion.

[0070] In one embodiment, the openings are spaced-apart openings, and the spaced-apart openings can be holes of any shape, including but not limited to square holes, circular holes, or frame-shaped holes, etc., and are not specifically limited.

[0071] In one embodiment, the opening is an electrode with a hollow structure for the non-transparent electrode directly above the biometric recognition module, that is, the non-transparent electrode directly above the biometric recognition module presents a hollow area formed by the remaining edge conductive wires.

[0072] The above embodiments implement various different opening schemes for setting openings on the non-transparent electrode, which are used to improve the light transmittance and also make the schemes more flexible and diverse.

[0073] Taking the "king-shaped" Pattern pattern as an example, as shown in Figure 2, Figure 2 is a schematic diagram of a hollow structure electrode formed by the remaining edge conductive wires after etching all areas of the electrode layer. The hollow structure electrode in Figure 2 can be understood as a frame-shaped opening formed by the non-transparent electrode directly above the biometric recognition module after full镂空 or etching, leaving the remaining edge conductive material. For another example, the first figure from the left in Figure 3 shows that the non-transparent electrode directly above the biometric recognition module is provided with spaced square holes. For example, as shown in Figure 12, Figure 12 shows an example of the non-transparent electrode directly above the biometric recognition module being provided with spaced square holes or circular holes; the second figure from the left in Figure 3 shows that the non-transparent electrode directly above the biometric recognition module is provided with spaced circular holes.

[0074] The opening treatment scheme allows the area of ​​the non-transparent electrode directly above the biometric recognition module to account for 4% to 48.7% of the area of ​​the electrode layer directly above the biometric recognition module. In other words, the area of ​​the non-transparent electrode directly above the biometric recognition module accounts for 5% to 95% of the area of ​​the non-electrode region of the electrode layer directly above the biometric recognition module. This allows the light emitted by the biometric recognition module or the light emitted by the light-emitting components around the biometric recognition module to pass through the area of ​​the electrode layer where no non-transparent electrode is provided to reach the light-transmitting area of ​​the cover plate.

[0075] In one embodiment, the light-transmitting area of ​​the electrode layer directly above the biometric recognition module can be increased by narrowing the linewidth of the non-transparent electrode, wherein the linewidth of the non-transparent electrode directly above the biometric recognition module ranges from 0.03 mm to 1 mm.

[0076] In this embodiment, the width of the non-transparent electrode directly above the biometric recognition module is less than or equal to 0.01 mm, ensuring sufficient light transmission area in the electrode layer above the biometric recognition module. The width of the non-transparent electrode directly above the biometric recognition module is greater than or equal to 0.03 mm, effectively guaranteeing the touch performance of the electrode layer. Therefore, this embodiment, by limiting the electrode linewidth range of the non-transparent electrode directly above the biometric recognition module, can simultaneously guarantee touch performance and the light transmission requirements of the area directly above the biometric recognition module.

[0077] For example, as shown in Figure 6, in the general case represented by the first figure from the left in Figure 6, the area of ​​the non-transparent electrode directly above the biometric recognition module accounts for 95% of the area of ​​the electrode layer without electrodes directly above the biometric recognition module. At this time, the touch performance is relatively good. Since the proportion of non-transparent electrodes is relatively high in the embodiment shown in the first figure from the left in Figure 6, the light transmittance is relatively poor.

[0078] Taking the non-transparent electrode directly above the biometric recognition module as a copper foil with a frame-shaped opening formed by the remaining edge conductive lines after full hollowing / etching, as an example, in the embodiment of this application shown in the second figure from the left in Figure 6, the copper foil is provided with a frame-shaped hole so that the area of ​​the non-transparent electrode directly above the biometric recognition module accounts for 16.7% of the area of ​​the electrode layer without electrodes directly above the biometric recognition module. Furthermore, in the embodiment of this application shown in the second figure from the left in Figure 6, the electrode linewidth is 0.1 mm, at which point the touch performance and light transmittance are moderate. In the embodiment shown in the second figure from the left in Figure 6, not only is the non-transparent electrode set as a frame-shaped opening, but the linewidth of the non-transparent electrode is also limited. Therefore, the proportion of the area of ​​the non-transparent electrode directly above the biometric recognition module can simultaneously meet the requirements of touch performance and sufficient light transmittance.

[0079] In the embodiment of this application shown in the third figure from the left in Figure 6, the copper foil also has frame-shaped openings. Unlike the embodiment in the second figure from the left in Figure 6, the non-transparent electrode in the embodiment of the third figure from the left in Figure 6 has a narrower linewidth, so that the area of ​​the non-transparent electrode directly above the biometric recognition module accounts for 5% of the area of ​​the electrode layer without electrodes directly above the biometric recognition module. In this embodiment, the electrode linewidth is 0.03 mm, which results in better light transmittance but poorer touch performance. It should be noted that the second and third figures from the left in Figure 6 are only examples of frame-shaped openings to illustrate one type of electrode layer opening design. The proportion and linewidth of the non-transparent electrode are equally applicable to other opening schemes, and specific examples will not be provided.

[0080] In one embodiment, the width of the non-transparent electrode directly above the biometric identification module is less than a target width threshold, so that the light emitted by the biometric identification module or the light emitted by the light-emitting components around the biometric identification module can pass through the gap formed between the non-transparent electrodes directly above the biometric identification module to the light-transmitting area of ​​the cover plate. This gap can be understood as the non-transparent electrodes being narrower to form a light-transmitting area between the non-transparent electrodes.

[0081] In one embodiment, the target width threshold is 1 mm; the width of the non-transparent electrode directly above the biometric recognition module is greater than or equal to 0.03 mm. In the embodiment shown in Figure 4, the non-transparent electrode directly above the biometric recognition module is not only configured as a frame-shaped opening, but its linewidth is also within the range of 0.03 mm to 1 mm. As shown in Figure 2, the non-transparent electrode of the entire electrode layer is not only configured as a frame-shaped opening, but its linewidth is also within the range of 0.03 mm to 1 mm.

[0082] In the embodiment shown in the third figure from the left in Figure 6, the non-transparent electrode directly above the biometric recognition module has a line width of 0.1 mm and is provided with a frame-shaped opening.

[0083] In the embodiment shown in Figure 5, the non-transparent electrode directly above the biometric recognition module is not set as a frame-shaped opening, but the line width of the non-transparent electrode directly above the biometric recognition module is set in the range of 0.03mm to 1mm.

[0084] In this application, as shown in Figures 2 and 4, in addition to opening the non-transparent electrode directly above the biometric identification module to improve light transmittance, this embodiment can also narrow the linewidth of the non-transparent electrode directly above the biometric identification module, making the width of the non-transparent electrode less than a target width threshold. This allows the light emitted by the biometric identification module or the light emitted by the light-emitting components around the biometric identification module to pass through the gap formed between the non-transparent electrodes directly above the biometric identification module to the light-transmitting area of ​​the cover plate.

[0085] As an example, the line width of the non-transparent electrode directly above the biometric recognition module is narrowed, or the line width of all non-transparent electrodes above the biometric recognition module is narrowed.

[0086] It should be understood that since the recognition area of ​​a biometric recognition module is often smaller than the touch recognition area, in some scenarios it is not necessary to limit the proportion of the non-transparent electrodes of the entire electrode layer to the first proportion. It is also possible to limit the proportion of the non-transparent electrodes directly above the biometric recognition module to the first proportion.

[0087] For example, taking the biometric recognition module as having two modules and the non-transparent electrodes directly above the two modules having a hollow structure for openings, a structural schematic diagram of the non-transparent electrodes of the electrode layer is shown in Figure 4; taking the biometric recognition module as having two modules and the non-transparent electrodes directly above the two modules having a narrowed electrode linewidth for openings, a structural schematic diagram of the non-transparent electrodes of the electrode layer is shown in Figure 5.

[0088] It should be understood that the electrode layer of the touch layer includes, but is not limited to, a single-layer electrode layer structure, a double-layer electrode layer structure, or a multi-layer electrode layer structure, and there is no specific limitation.

[0089] In one embodiment, the touch layer includes a first electrode layer and a second electrode layer adjacent to the upper and lower surfaces of the substrate layer respectively. The first electrode layer is used to set a first non-transparent electrode, and the second electrode layer is used to set a second non-transparent electrode; the Pattern patterns of the first non-transparent electrode and the second non-transparent electrode include a "king-shaped" Pattern pattern, and no specific limitation is made. The proportion of the area of the first non-transparent electrode directly above the biometric recognition module to the area of the first electrode layer directly above the biometric recognition module is the first proportion, and the proportion of the area of the second non-transparent electrode directly above the biometric recognition module to the area of the second electrode layer directly above the biometric recognition module is the first proportion, so that the light emitted by the biometric recognition module or the light emitted by the light-emitting components around the biometric recognition module can reach the light-transmitting area of the cover plate through the areas of the first electrode layer and the second electrode layer where no non-transparent electrodes are set.

[0090] In this embodiment, the touch layer includes a first electrode layer and a second electrode layer adjacent to the upper and lower surfaces of the substrate layer respectively, which is a double electrode layer structure. As shown in FIG. 7, the upper part of FIG. 7 is a schematic diagram of a stacked structure of the original materials of the touch layer. The middle is the substrate layer, and the middle substrate layer can be a PET (polyethylene terephthalate) substrate layer or a PI (polyimide) substrate layer. From this, it can also be seen that the upper and lower layers of this substrate layer are electrode layers. If the electrode layers on both sides of the touch layer are opaque (such as using non-transparent copper foil), it will affect the upward transmission effect of the light emitted by the biometric recognition module or the upward transmission effect of the light emitted by the light-emitting components around the biometric recognition module. Therefore, the non-transparent electrodes of the electrode layers on both sides are perforated or the line width is reduced to improve the light transmittance; taking the "king-shaped" Pattern pattern as an example, the lower part of FIG. 7 is a schematic diagram of a stacked structure after etching off the redundant parts of the electrode layers of the original materials of the touch layer based on the touch pattern pattern and the circuit.

[0091] In summary, the embodiments of this application provide a touch structure. Compared to the prior art using ITO transparent electrodes, this application limits the proportion of non-transparent electrodes, allowing light emitted by the biometric recognition module or light emitted by the light-emitting components around the biometric recognition module to pass through the area of ​​the electrode layer without non-transparent electrodes and reach the light-transmitting area of ​​the cover plate. This enables the touch device using this touch structure to achieve light emission, which can be used to assist the operation of the biometric recognition module. For example, in a biometric recognition module including an ultrasonic fingerprint recognition module, the light emitted by the light-emitting components around the ultrasonic fingerprint recognition module can guide the user to identify the fingerprint pressing position in a dark environment. In addition, this application achieves touch detection through non-transparent electrodes, resulting in lower costs. Moreover, since the non-transparent electrode becomes a complete electrode layer after being processed by opening holes or narrowing the line width, there is no splicing gap problem that exists when multiple touch layers are spliced ​​together, making the processing of touch detection signals of the touch layer by the touch circuit board simpler and more accurate.

[0092] It should be noted that, based on the touch structure provided in the above embodiments, this application also provides a touch device including the touch structure mentioned in any of the foregoing embodiments. The touch device will be described below. In the description of the touch device, the content of the touch structure (including the implementation method and technical effect) can be referred to the description of the foregoing embodiments and will not be repeated. The main focus is on describing other structural relationships of the touch device.

[0093] In one embodiment, a touch device as shown in Figures 8, 9, 10, and 11 is provided, comprising:

[0094] The touch structure, the cover plate (101; 201), and the biometric identification module (107 / 108; 207 / 208) mentioned in any of the foregoing embodiments will not be described again here.

[0095] Cover plate (101; 201), the touch structure is assembled below the cover plate;

[0096] The biometric identification module (108, 106; 208, 206) and the touch device further include a shielding layer (105; 205), a first transparent adhesive (102; 202), and a second transparent adhesive (104; 204). The first transparent adhesive (102; 202) is bonded between the cover plate (101; 201) and the touch layer (103; 203), and the second transparent adhesive (104; 204) is bonded between the touch layer (103; 203) and the shielding layer (105; 205). The biometric identification module (108, 106; 208, 206) is attached to the shielding layer (108, 106; 208, 206).

[0097] In this embodiment, the light emitted by the biometric identification module or the light emitted by the light-emitting components around the biometric identification module can pass through the light-transmitting area of ​​the shielding layer and the area in the electrode layer where no non-transparent electrodes are provided, to reach the light-transmitting area of ​​the cover plate.

[0098] In this embodiment, the shielding layer (105; 205) is disposed between the biometric recognition module (108; 208) and the touch layer (103; 203), which can effectively reduce the interference signal of the biometric recognition module on the detection of the touch layer, thereby ensuring touch performance. Additionally, in some embodiments, the touch circuit board may also be located below the shielding layer to reduce the interference signal of the touch circuit board on the detection of the upper touch layer, thus ensuring touch performance. The first transparent adhesive is bonded between the cover plate and the touch layer, serving to fix the cover plate and the touch layer and having light-transmitting function; the second transparent adhesive is bonded between the touch layer and the shielding layer, serving to fix the touch layer and the shielding layer and having light-transmitting function, thereby ensuring that the light transmittance required by the touch device of this application embodiment is not affected.

[0099] For example, the first transparent adhesive includes, but is not limited to, light-transmitting adhesives such as optically clear adhesive (OCA); the second transparent adhesive includes, but is not limited to, light-transmitting adhesives such as OCA adhesive, and is not specifically limited.

[0100] As can be seen, this embodiment provides a touch device in which the electrode layer of the touch structure is used to set non-transparent electrodes, and the area of ​​the non-transparent electrode directly above the biometric recognition module is proportional to the area of ​​the electrode layer directly above the biometric recognition module, so that the light emitted by the biometric recognition module or the light emitted by the light-emitting components around the biometric recognition module can pass through the area of ​​the electrode layer where no non-transparent electrodes are set to reach the light-transmitting area of ​​the cover plate. Therefore, compared with the prior art using ITO transparent electrodes, the touch device provided in this embodiment limits the proportion of non-transparent electrodes in the touch structure, allowing the light emitted by the biometric recognition module or the light emitted by the light-emitting components around the biometric recognition module to pass through the area of ​​the electrode layer where no non-transparent electrodes are set to reach the light-transmitting area of ​​the cover plate. Furthermore, this embodiment achieves touch detection using non-transparent electrodes, resulting in lower costs.

[0101] It should be understood that the cover plate directly above the biometric identification module has a light-transmitting area. In one embodiment, the cover plate includes a transparent cover plate (101; 201). Exemplarily, the transparent cover plate includes a glass cover plate or a Mylar cover plate. The Mylar cover plate is generally made of a light-transmitting plastic sheet. In other embodiments, the cover plate may also be a non-transparent cover plate, and the non-transparent cover plate directly above the biometric identification module may have a light-transmitting area; no specific limitation is made.

[0102] In this embodiment, the cover plate of the touch device can be made diverse, with more options and greater adaptability. The required cover plate type can be selected according to the needs, and there is no specific limitation.

[0103] In one embodiment, the touch surface of the cover plate (101; 201) is a frosted surface; or, the touch surface of the light-transmitting area of ​​the cover plate is a non-frosted surface, and the other touch surfaces of the cover plate, excluding the light-transmitting area, are frosted surfaces. In this embodiment, the touch surface of the cover plate is frosted, providing a uniform tactile feel and improving the user's tactile experience. Furthermore, if the touch surface of the light-transmitting area of ​​the cover plate is non-frosted, and the other touch surfaces are frosted, compared to the aforementioned embodiment, the light transmittance of the touch surface of the light-transmitting area of ​​the cover plate can be further improved, enhancing the light transmission effect. Moreover, when the biometric recognition module is an ultrasound-related module, if the touch surface of the light-transmitting area of ​​the cover plate is non-frosted, the ultrasonic performance of the ultrasound-related module will also be better, for example, improving the ultrasonic performance of the ultrasonic fingerprint recognition module. The frosted surface of the other touch surfaces, excluding the light-transmitting area, ensures a good tactile experience in other non-light-transmitting areas, improving the user experience. In addition, the touch surface of the cover plate can also be entirely matte, meaning the entire surface has no matte finish; there is no specific limitation.

[0104] In one embodiment, the light-transmitting area of ​​the cover plate (101; 201) includes a first light-transmitting area (1014; 2014), and the biometric identification module includes an ultrasonic fingerprint identification module. The light emitted by the light-emitting element around the ultrasonic fingerprint identification module can pass through the area in the electrode layer where no non-transparent electrode is provided to reach the first light-transmitting area of ​​the cover plate.

[0105] In this embodiment, the area of ​​the non-transparent electrode directly above the ultrasonic fingerprint recognition module (108; 208) is proportional to the area of ​​the electrode layer directly above the biometric recognition module, which is a first ratio, so that the light emitted by the light-emitting element around the ultrasonic fingerprint recognition module can pass through the area of ​​the electrode layer where no non-transparent electrode is provided to reach the first light-transmitting area of ​​the cover plate.

[0106] On the one hand, this allows the touch device in the embodiments of this application to integrate ultrasonic fingerprint functionality; on the other hand, due to the strong penetrating power of ultrasonic fingerprints, it can adapt to thicker cover materials, greatly increasing the strength of the device using this touch device and providing greater freedom in device structural design. For example, compared to capacitive fingerprint modules, which can only penetrate 0.2mm of glass or ceramic cover, the ultrasonic waves in the ultrasonic fingerprint recognition module can penetrate glass of 0.5mm or more, aluminum plates of 1mm or more, and plastic sheets of 2mm or more, allowing the ultrasonic fingerprint recognition module to be directly attached below the shielding layer of the touch structure. Moreover, due to the strong penetrating power of ultrasonic waves, when the cover is relatively thick, such as greater than 0.2mm, there is no need to drill holes or thin the cover or device casing, allowing for greater flexibility in application. Devices using this touch device are more aesthetically pleasing and have better waterproofing. Because ultrasonic fingerprint sensors are not afraid of strong light, they offer better touch performance in scenarios with dirty, wet, dry, and low-temperature fingers. Furthermore, due to the limitation on the proportion of non-transparent electrodes in the touch structure of this embodiment, the light emitted by the light-emitting components around the ultrasonic fingerprint recognition module can pass through the area of ​​the electrode layer without non-transparent electrodes to reach the first light-transmitting area of ​​the cover plate. This allows the light-emitting components around the ultrasonic fingerprint recognition module to work in conjunction with the module's operation. The addition of light-emitting components around the ultrasonic fingerprint recognition module enhances the lighting effect. The light transmitted through these components can be used to guide users to quickly locate the ultrasonic fingerprint recognition module in dark environments, making the ultrasonic fingerprint pressing area illuminated and more convenient to use.

[0107] Of course, in other embodiments, the touch device in this application embodiment can also be assembled with other types of biometric identification modules, such as with an optical fingerprint identification module, and there is no specific limitation.

[0108] In one embodiment, the light-transmitting area of ​​the cover plate (101; 201) includes a second light-transmitting area (1011; 2011), and the biometric identification module includes a health identification module. The light emitted by the health identification module can pass through the area in the electrode layer where no non-transparent electrodes are provided to reach the second light-transmitting area of ​​the cover plate.

[0109] In this embodiment, the area of ​​the non-transparent electrode directly above the health recognition module (107; 207) is proportional to the area of ​​the electrode layer directly above the health recognition module, which is a first ratio. This allows the light emitted by the health recognition module to pass through the area of ​​the electrode layer where no non-transparent electrode is provided to reach the second light-transmitting area (1011; 2011) of the cover plate (101; 201). The touch device in this embodiment can integrate health recognition functions, such as the recognition function of at least one of blood oxygen and heart rate health data. In addition, due to the limitation of the proportion of non-transparent electrodes by the touch structure in this embodiment, the light emitted by the health recognition module can pass through the area of ​​the electrode layer where no non-transparent electrode is provided to reach the second light-transmitting area of ​​the cover plate, or the ability of the light emitted by the health recognition module to pass through the area of ​​the electrode layer where no non-transparent electrode is provided to reach the second light-transmitting area of ​​the cover plate is improved, increasing the light transmittance, thereby ensuring the functional use of the health recognition module, especially when an optical health recognition module is used.

[0110] In one embodiment, the light-transmitting area of ​​the cover plate includes a first light-transmitting area (1014; 2014) and a second light-transmitting area (1011; 2011). The biometric identification module includes an ultrasonic fingerprint identification module (108; 208) and a health identification module (107; 207). The light emitted by the light-emitting element around the ultrasonic fingerprint identification module can pass through the area in the electrode layer where no non-transparent electrode is provided to reach the first light-transmitting area of ​​the cover plate. The light emitted by the health identification module can pass through the area in the electrode layer where no non-transparent electrode is provided to reach the second light-transmitting area of ​​the cover plate.

[0111] In this embodiment, the biometric identification module is an ultrasonic fingerprint identification module, or the biometric identification module is a health identification module, or the biometric identification module includes two modules: an ultrasonic fingerprint identification module and a health identification module. In other embodiments, other biometric identification modules may also be used, and no specific limitation is made.

[0112] In this embodiment, the biometric identification module includes two modules: an ultrasonic fingerprint identification module and a health identification module. This allows the touch device in this embodiment to integrate both ultrasonic fingerprint and health identification functions, diversifying the functions of the touch device and realizing a complete touch device structure that integrates ultrasonic fingerprint and health detection. Furthermore, the health identification module in this embodiment includes, but is not limited to, a module that detects at least one of heart rate and blood oxygen. When the ultrasonic fingerprint identification module performs fingerprint detection, the health identification module can also simultaneously detect heart rate or blood oxygen. Heart rate detection can also be used to assist fingerprint detection, preventing the intrusion of fake fingerprints, thus making the device using this touch device more secure and stable.

[0113] In one embodiment, as shown in Figure 9 or Figure 11, the bottom surface of the first light-transmitting area (1014; 2014) of the cover plate (101; 201) is silkscreened with a pressing mark. The light emitted by the light-emitting element around the ultrasonic fingerprint recognition module can pass through the area in the electrode layer where no non-transparent electrode is provided to reach the first light-transmitting area (1014; 2014) of the cover plate, so that the pressing mark silkscreened on the bottom surface can be clearly presented, making it convenient for the user to identify the fingerprint pressing area. For example, the pressing mark may include a fingerprint mark or other marks used to indicate pressing, and there is no specific limitation.

[0114] In one embodiment, the bottom surface of the second light-transmitting area (1011; 2011) of the cover plate (101; 201) is screen-printed with ink of a target color type. The light emitted by the biometric health recognition module can pass through the area of ​​the electrode layer where no non-transparent electrodes are provided to reach the second light-transmitting area of ​​the cover plate. Because the bottom surface of the second light-transmitting area of ​​the cover plate is screen-printed with ink of the target color type, the brightness and glare of the light emitted by the health recognition module can be reduced, improving the user experience. For example, the ink of the target color type includes dark colors or other inks that facilitate reducing light brightness and glare; no specific limitation is made.

[0115] It should be noted that, in the embodiments of this application, for the glass cover plate or Mylar cover plate solution, in order to improve the performance of the touch device, the ultrasonic fingerprint recognition module may have different arrangements in the touch device, including the setting of the shielding layer and the assembly relationship between the ultrasonic fingerprint recognition module and the shielding layer. The glass cover plate solution and the Mylar glass solution are described below respectively.

[0116] In one embodiment, as shown in Figures 8 and 9, when the cover plate 101 of the touch device is a glass cover plate, the shielding layer 105 is a transparent material layer with shielding function. This transparent material layer with shielding function generally refers to a transparent film material with shielding function, such as ITO film. In some embodiments, the shielding layer is conductive to the touch circuit board and shares a ground with the device using the touch device.

[0117] In this embodiment, since the glass cover is relatively thick and has high strength and rigidity, the touch device has high strength and rigidity. Therefore, the shielding layer at the bottom of the touch device can be a transparent material layer with shielding function, without the need for bottom reinforcement treatment of the touch device, reducing unnecessary bottom reinforcement structure and making the structure relatively simple.

[0118] In one embodiment, as shown in Figures 8 and 9, when the cover plate 101 is a glass cover plate, the touch device further includes a first adhesive 112, a second adhesive 113, a third adhesive 114, a light guide 111, and a light-emitting element 110. The biometric identification module includes an ultrasonic fingerprint identification module 108, which includes an ultrasonic fingerprint chip 1081. The ultrasonic fingerprint identification module 108 also includes an acoustic layer 1082 adjacent to the ultrasonic fingerprint chip, and the acoustic layer 1082 is disposed below the ultrasonic fingerprint chip 1081 (as shown in Figure 9). In another embodiment, the acoustic layer 1082 can be attached to the light guide 111. Specifically, it can be attached to the light guide 111 by the second adhesive 113, while the ultrasonic fingerprint chip 1081 is disposed below the acoustic layer 1082. Compared to the other embodiment, in the example shown in Figure 9, when the acoustic layer 1082 is attached below the ultrasonic fingerprint chip 1081, the fingerprint recognition performance of the ultrasonic fingerprint recognition module 108 is better. The first adhesive 112 is bonded between the transparent material layer 105 and the first surface of the light guide 111, the second adhesive 113 is bonded between the first region of the second surface of the light guide and the ultrasonic fingerprint chip 1081, and the third adhesive 114 is bonded between the second region of the second surface of the light guide 111 and the light-emitting element 110.

[0119] In this embodiment, when the cover plate 101 of the touch device is a glass cover plate, the shielding layer is a transparent material layer 105 with shielding function. In order to effectively guide the transmission of light so that the light emitted by the light-emitting element 110 can effectively pass through the area in the electrode layer where no non-transparent electrode is provided to reach the first light-transmitting area 1014 of the cover plate 101, in this embodiment, the light guide 111 is attached to the bottom of the transparent material layer 105, and the light-emitting element is directly attached to the light guide 111. The light guide 111 can effectively guide the light emitted by the light-emitting element through the area in the electrode layer where no non-transparent electrode is provided to reach the first light-transmitting area 1014 of the cover plate 101.

[0120] For example, the second region may be the area surrounding the second surface of the light guide 111. For instance, the light-emitting element 110 refers to multiple LEDs, which are spaced apart and distributed around the second surface of the light guide 111. The second region of the second surface of the light guide 111 may also be a region other than the first region, rather than the entire perimeter; no specific limitation is made. The fact that the second region is the area surrounding the second surface of the light guide 111 allows for more comprehensive and uniform light emission from the light-emitting element 110.

[0121] For example, the first adhesive 112 includes, but is not limited to, light-transmitting adhesives such as OCA adhesive; the second adhesive 113 includes, but is not limited to, copper foil adhesive (a three-layer structure with adhesive on both sides and copper foil in the middle), wherein the copper foil adhesive may include 6µm adhesive, 6µm copper foil, and 3µm adhesive, or may include 6µm adhesive, 6µm copper foil, and 6µm adhesive with a thickness of 6µm. The specific materials and specifications are not limited to the models and specifications listed above; other adhesives are acceptable as long as they meet the ultrasonic performance requirements. The third adhesive 114 includes, but is not limited to, light-transmitting adhesives such as OCA adhesive, and is not specifically limited.

[0122] In one embodiment, when the cover plate is a glass cover plate 101, the touch device further includes a fourth adhesive 1071. The biometric identification module includes a health identification module 107, which includes a health detection circuit board 1072, a photoelectric converter PD, and a light signal emitter LED. The photoelectric converter and the light signal emitter LED are electrically connected to the health detection circuit board 1072, respectively. The health detection circuit board is provided with an outer light shield 1073 and an intermittent light shield 1074. A light-shielding spacer 1074 is provided between the electrical conversion component and the optical signal emitting component, and a peripheral light-shielding spacer 1073 is provided around the health detection circuit board 1072; at least one of the peripheral light-shielding spacer 1073 and the light-shielding spacer 1074 is bonded to the transparent material layer 105 with the fourth adhesive 1071, so that the health recognition module 107 is pasted below the transparent material layer 105.

[0123] In this embodiment, since the health recognition module 107 is primarily used for health data collection, the proportion of the non-transparent electrode directly above the health recognition module 107 is sufficient to enable the transmission and reception of light signals by the health recognition module 107, compared to the ultrasonic fingerprint recognition module 108. Therefore, there is no need to separately set up a light guide, reducing the material cost of the touch device.

[0124] For example, the light signal emitting element can be a monochrome or multi-color LED, and the photoelectric conversion element can be a photodiode (PD), with no specific limitation. The light emitted by the light signal emitting element passes upward through the touch structure to the surface of the glass cover, and is then reflected by the finger and received by the photoelectric conversion element. The signal received by the photoelectric conversion element is then processed by the health detection circuit board at the back end to obtain health data such as the human body's heart rate or blood oxygen.

[0125] In this embodiment, a light-shielding element 1074 can be placed between the optical signal transmitter and the photoelectric converter to prevent the light emitted by the optical signal transmitter from directly entering the photoelectric converter and causing abnormal measurement data.

[0126] In one embodiment, as shown in Figures 10 and 11, when the cover plate 201 of the touch device adopts the Mylar scheme, the shielding layer is a metal reinforcing plate 205. Light-guiding materials (2051, 2052) are disposed directly above the biometric recognition module and directly above the light-emitting components surrounding the biometric recognition module to serve as the light-transmitting area of ​​the shielding layer. The light-transmitting area of ​​the shielding layer is formed by filling a portion of the metal reinforcing plate 205 with the light-guiding materials (2051, 2052). Specifically, a metal reinforcing plate 205 with partially hollowed-out or perforated areas can be placed into a mold. Then, molten light-guiding material is used to fill the hollowed-out or perforated areas. After cooling, the metal reinforcing plate and the light-guiding material are connected together to form a whole, and then it is removed from the mold to serve as a shielding layer with a light-transmitting area.

[0127] It should be noted that when the touch device has two modules, a health recognition module 207 and an ultrasonic fingerprint recognition module 208, the metal reinforcing plate 205 directly above the health recognition module 207 or the ultrasonic fingerprint recognition module 208 has a corresponding light guide material as a light-transmitting area. The two light guide materials included in the metal reinforcing plate 205 respectively form the first light-transmitting area and the second light-transmitting area of ​​the metal reinforcing plate 205.

[0128] In this embodiment, since the Mylar cover plate 201 is a relatively thin plastic, its strength and rigidity are poor. Therefore, when the touch device uses the Mylar cover plate 201, the bottom of the touch device can be reinforced by the metal reinforcing plate 205. The metal reinforcing plate 205, which is formed by injection molding the metal plate and the light guide material and has a light-transmitting area, is the bottom support of the entire touch device. It can enhance the strength and rigidity of the touch device, and at the same time play a role in structural reinforcement and signal shielding. Therefore, the transparent material shielding layer used in the glass cover plate solution can be eliminated and replaced with the metal reinforcing plate 205, which is formed by injection molding the metal plate and the light guide material and has a light-transmitting area.

[0129] In one embodiment, as shown in Figures 10 and 11, when the cover plate is a Mylar cover plate, the metal plate and the light guide material are injection molded together, which can also serve as an assembly carrier for the ultrasonic fingerprint module. The touch device also includes a fifth adhesive, a sixth adhesive, and a light-emitting element, which can be an LED light, and is not specifically limited thereto.

[0130] The touch device also includes a fifth adhesive 213, a sixth adhesive 214, and a light-emitting element 210. The ultrasonic fingerprint recognition module 208 includes an ultrasonic fingerprint chip 2081. The fifth adhesive 213 is bonded between the light-guiding material 2051 directly above the ultrasonic fingerprint recognition module 208 and the ultrasonic fingerprint chip 2081. The sixth adhesive 214 is bonded between the light-guiding material 2051 directly above the light-emitting element 210 around the ultrasonic fingerprint recognition module 208 and the light-emitting element 210. That is, the light-emitting element 210 is attached to the light-guiding material 2051 of the metal reinforcing plate 205 directly above the ultrasonic fingerprint recognition module 208, which can effectively transmit the light emitted by the light-emitting element 210 to the first light-transmitting area 2014 of the Mylar cover plate 201 for the user to identify the fingerprint recognition location.

[0131] It is worth noting that in this embodiment, since the shielding layer in the Mylar cover plate solution is a metal reinforcing plate 205 formed by injection molding of a metal plate and a light guide material, and the light guide material has a light guiding function, there is no need to set additional light guides directly above the ultrasonic fingerprint recognition module 208 and the light-emitting element 210. The ultrasonic fingerprint chip 2081 and the light-emitting element 210 can be directly bonded to the light guide material 2051 of the metal reinforcing plate 205 using the fifth adhesive 213 and the sixth adhesive 214. Compared with the above-mentioned solution, the light guide can be eliminated.

[0132] For example, the fifth bonding adhesive 213 includes, but is not limited to, copper foil adhesive (a sandwich structure with adhesive material on both sides and copper foil in the middle). The specifications of the copper foil adhesive can be a three-layer structure of 6µm adhesive material, 6µm copper foil and 3µm adhesive material, or a three-layer structure of 6µm adhesive material, 6µm copper foil and 6µm adhesive material. The specific materials and specifications are not limited to the models and specifications listed above. Other adhesive materials can be used as long as they meet the ultrasonic performance requirements.

[0133] In one embodiment, when the cover plate is a Mylar cover plate, the touch device further includes a seventh adhesive 2071. The biometric recognition module includes a health recognition module 207, which includes a health detection circuit board 2072, a photoelectric converter PD, and a light signal emitter LED. The photoelectric converter and the light signal emitter LED are electrically connected to the health detection circuit board 2072. The health detection circuit board 2072 is provided with an outer light shield 2073 and an intervening light shield 2074. The intervening light shield 2074 is provided between the photoelectric converter and the light signal emitter LED. The outer light shield 2073 is provided around the health detection circuit board 2072. At least one of the outer light shield 2073 and the intervening light shield 2074 is bonded to the light guide material 2052 located directly above the health recognition module 207 with the seventh adhesive 2071.

[0134] In this embodiment, the metal reinforcing plate 205 directly above the health recognition module 207 is provided with a light guide material 2052, which can enhance the transmittance of the light emitted by the health recognition module 207 compared with the solution without a light guide or light guide material.

[0135] In one embodiment, the touch device further includes a base plate (109; 209), which is the main body supporting the entire touch device and also the intermediate carrier for connecting the touch device to electronic devices such as laptops. It is used to fix the touch device to the electronic device. In one embodiment, the base plate shares the same ground with the entire device.

[0136] The above embodiments describe various embodiments of the touch device provided in this application. The following describes the structure of two touch devices provided in this application, taking the glass cover scheme and the Mylar cover scheme as examples, in conjunction with Figures 8-11.

[0137] In one embodiment, please refer to Figures 8-11. Figure 8 is an exploded view of a touch device employing a glass cover, and Figure 9 is an assembly view of the touch device employing a glass cover. The touch device includes:

[0138] A touch control structure includes a touch layer 103 and a touch circuit board 106. The touch layer 103 includes a substrate layer 1032, and a first electrode layer 1031 and a second electrode layer 1033 adjacent to the substrate layer 1032. The touch circuit board 106 is disposed below the touch layer 103 and is electrically connected to the touch layer 103 to detect touch. The touch circuit board 106 includes an eighth adhesive 1061 for bonding the touch circuit board 106 to a transparent material layer 105 with shielding function, a device 1062, and a connector 1063. The device 1062 represents the circuit device required for the touch circuit board 106 to realize the control function, and the connector 1063 is a port for connecting to the motherboard of an electronic device. The touch structure is used to be assembled under the glass cover plate 101. The first transparent adhesive 102 is bonded between the glass cover plate 101 and the first electrode layer 1031 of the touch layer 103, and the second transparent adhesive 104 is bonded between the second electrode layer 1033 of the touch layer 103 and the transparent material layer 105.

[0139] Below the transparent material layer 105, two modules are disposed: an ultrasonic fingerprint recognition module 108 and a health recognition module 107, respectively distributed at different positions on the transparent material layer 105. The non-transparent electrodes of the first electrode layer 1031 and the second electrode layer 1033 directly above the ultrasonic fingerprint recognition module 108 and the health recognition module 107 are partially perforated. The ultrasonic fingerprint recognition module 108 includes an ultrasonic fingerprint chip 1081; the first adhesive 112 is bonded between the transparent material layer 105 and the first surface of the light guide 111; the second adhesive 113 is bonded between the first region of the second surface of the light guide 111 and the ultrasonic fingerprint chip 1081; and the third adhesive 114 is bonded between the second region of the second surface of the light guide 111 and the light-emitting element 110. The second region may be the area around the second surface of the light guide 111. The health recognition module 107 includes a health detection circuit board 1072, a PD and an LED light. A spacer light shield 1074 is disposed between the PD and the LED light, and an outer light shield 1073 is disposed around the health detection circuit board 1072. One of the outer light shield 1073 and the spacer light shield 1074 is bonded to the transparent material layer 105 with the fourth adhesive 1071, so that the health recognition module 107 is pasted under the transparent material layer 105.

[0140] In this embodiment, as shown in Figure 9, the glass cover 101 directly above the biometric recognition module 108 is provided with a light-transmitting area. Specifically, the light-transmitting area of ​​the glass cover 101 includes a first light-transmitting area 1014. The light emitted by the light-emitting element 110 around the ultrasonic fingerprint recognition module 108 can pass through the area in the electrode layer where no non-transparent electrode is provided to reach the first light-transmitting area 1014 of the glass cover 101. The bottom surface of the first light-transmitting area 1014 of the glass cover 101 is silkscreened with a pressing mark 1013. The light-transmitting area of ​​the glass cover 101 includes a second light-transmitting area 1011. The light emitted by the LED light of the health recognition module 107 can pass through the area in the electrode layer where no non-transparent electrode is provided to reach the light-emitting area of ​​the second light-transmitting area 1011 of the glass cover 101. After being reflected by the finger, it is received by the PD of the health recognition module 107 through the light-incident area of ​​the second light-transmitting area 1011 of the glass cover 101. The bottom surface of the second light-transmitting area 1011 of the glass cover 101 is screen-printed with ink 1012 of the target color type.

[0141] A base plate 109 is also provided around the transparent material layer 105 for fixed connection with electronic equipment.

[0142] In another implementation, the electrodes in the electrode layer directly above the biometric recognition module can be all transparent electrodes, while the electrodes in the electrode layer directly above the non-biometric recognition module can be all non-transparent electrodes. This allows light emitted from the biometric recognition module directly above it, or light emitted from the light-emitting components around the biometric recognition module, to pass through the transparent electrodes in the electrode layer and reach the light-transmitting area of ​​the cover plate. Touch detection can also be achieved through the transparent electrodes, thus not affecting touch detection performance. However, this solution uses transparent electrodes instead of non-transparent ones, resulting in higher costs. Furthermore, the splicing of the touch layer with transparent electrodes and the touch layer with non-transparent electrodes to form a complete touch area may create gaps between the two different touch layers. This can complicate the circuit board's processing of touch detection signals or lead to poor touch recognition performance in the gap area. In the scheme shown in Figure 7 of this application, since the non-transparent electrode is a complete stack, multiple touch layers are not spliced ​​together while realizing the touch function, resulting in lower cost. This makes the circuit board's processing of the touch detection signal of the touch layer simpler and more accurate, and also ensures the touch recognition effect of the entire touch area.

[0143] In one embodiment, please refer to Figures 10-11. Figure 10 is an exploded view of a touch device employing a Mylar cover plate solution, and Figure 11 is an assembly view of a touch device employing a Mylar cover plate solution. This touch device includes:

[0144] The touch structure includes a touch layer 203 and a touch circuit board 206. The touch layer 203 includes a substrate layer 2032, and a first electrode layer 2031 and a second electrode layer 2033 adjacent to the substrate layer 2032. The touch circuit board 206 is disposed below the touch layer 203 and is electrically connected to the touch layer 203 to detect touch. The touch circuit board 206 includes a ninth adhesive 2061 for bonding the touch circuit board 206 to a metal reinforcing plate 205 with shielding and reinforcing functions, a device 2062, and a connector 2063. The device 2062 represents the circuit device required for the touch circuit board 206 to realize the control function, and the connector 2063 is a port for connecting to the motherboard of an electronic device. The touch structure is used to be assembled under the Mylar cover plate 201. The first transparent adhesive 202 is bonded between the Mylar cover plate 201 and the first electrode layer 2031 of the touch layer 203, and the second transparent adhesive 204 is bonded between the second electrode layer 2033 of the touch layer 203 and the metal reinforcing plate 205.

[0145] Two modules, an ultrasonic fingerprint recognition module 208 and a health recognition module 207, are disposed below the metal reinforcing plate 205, respectively distributed at different positions on the metal reinforcing plate 205. The proportions of the non-transparent electrodes of the first electrode layer 2031 and the second electrode layer 2033 directly above the ultrasonic fingerprint recognition module 208 and the health recognition module 207 are as described in the previous embodiment, for example, openings or widths as described in the previous embodiment can be provided. The ultrasonic fingerprint recognition module 208 includes an ultrasonic fingerprint chip 2081, and the ultrasonic fingerprint recognition module 208 also includes an acoustic layer 2082 adjacent to the ultrasonic fingerprint chip 2081; the first area of ​​the light guide material 2051 of the metal reinforcing plate 205 is bonded to the ultrasonic fingerprint chip 2081 with the fifth adhesive 213, and the second area of ​​the light guide material 2051 of the metal reinforcing plate 205 is bonded to the light-emitting element 210 with a sixth adhesive 214. The second area is the area surrounding the light guide material 2051 of the metal reinforcing plate 205. As shown in Figure 9, the acoustic layer 2082 is bonded to the underside of the ultrasonic fingerprint chip 2081. In another embodiment, the acoustic layer 2082 can be bonded to the light guide material 2051. Specifically, the acoustic layer 2082 can be bonded to the light guide material 2051 using a fifth adhesive 213. Compared to the other embodiment, when the acoustic layer 2082 is bonded to the underside of the ultrasonic fingerprint chip 2081, the fingerprint recognition performance of the ultrasonic fingerprint recognition module 208 is better.

[0146] The health recognition module 207 includes a health detection circuit board 2072, a PD (Power Distribution Device), and an LED light. The PD and LED light are electrically connected to the health detection circuit board 2072. The health detection circuit board 2072 is provided with an outer light-shielding member 2073 and a spacer light-shielding member 2074. The spacer light-shielding member 2074 is disposed between the PD and the LED light. The outer light-shielding member 2073 is disposed around the health detection circuit board 2072. One of the outer light-shielding member 2073 and the spacer light-shielding member 2074 is bonded to the metal reinforcing plate 205 with the seventh adhesive 2071, so that the health recognition module 207 is attached below the light guide material 2052 of the metal reinforcing plate 205.

[0147] The Mylar cover plate 201 has a first light-transmitting area 2014. Light emitted from the light-emitting element 210 surrounding the ultrasonic fingerprint recognition module 208 can pass through the light-guiding material 2051 of the metal reinforcing plate 205 and the area in the electrode layer without non-transparent electrodes to reach the first light-transmitting area 2014 of the Mylar cover plate 201. A press mark 2013 is silkscreened on the bottom surface of the first light-transmitting area 2014 of the Mylar cover plate 201. The Mylar cover plate 201 also has a second light-transmitting area 2011. Light emitted from the LED of the health recognition module 208 can pass through the light-guiding material 2052 of the metal reinforcing plate 205 and the area in the electrode layer without non-transparent electrodes to reach the light-emitting area of ​​the second light-transmitting area 2011 of the Mylar cover plate 201. Light reflected by the finger is received by the PD of the health recognition module 208 through the light-incident area of ​​the second light-transmitting area 2011 of the Mylar cover plate 201. The bottom surface of the second light-transmitting area 2011 of the Mylar cover 201 is screen-printed with ink of the target color type 2012.

[0148] The metal reinforcing plate 205 is also surrounded by a base plate 209 for fixed connection with electronic equipment.

[0149] It should be noted that the above embodiments are merely illustrative examples and do not limit the touch device provided in the embodiments of this application. The corresponding technical effects can also be found in the corresponding descriptions of the foregoing embodiments.

[0150] In one embodiment, an electronic device is also provided, including a touch device as described in any of the foregoing embodiments, or including a touch structure as described in any of the foregoing embodiments. The type of this electronic device includes, but is not limited to, portable or mobile computing devices such as laptops and gaming devices, as well as other electronic devices such as automobiles; this application does not specifically limit the scope of the application.

[0151] In one embodiment, a method for fabricating a touch layer of a touch structure, the touch structure being assembled under a cover plate, the touch structure being assembled with a biometric identification module, the biometric identification module being located below the touch layer of the touch structure, the method comprising:

[0152] According to the electrode circuit pattern, the non-transparent electrodes of the electrode layer of the touch layer are etched.

[0153] The ratio of the area of ​​the non-transparent electrode above the biometric identification module to the area of ​​the electrode layer above the biometric identification module is a first ratio, so that the light emitted by the biometric identification module can pass through the area of ​​the electrode layer where no non-transparent electrode is provided to reach the light-transmitting area of ​​the cover plate. The first ratio is not equal to 0.

[0154] In this embodiment, further details regarding the touch layer of the touch structure can be found in the preceding embodiments regarding the limitations of the touch layer. Using the preparation method provided in this application, the touch layer is prepared such that the area of ​​the non-transparent electrode directly above the biometric identification module in its electrode layer is proportional to the area of ​​the electrode layer directly above the biometric identification module. This ensures that the light emitted by the biometric identification module can pass through the area of ​​the electrode layer without non-transparent electrodes to reach the light-transmitting area of ​​the cover plate. This first proportion is not equal to 0. Therefore, the touch structure or touch device can possess the effects mentioned in the above embodiments, which will not be repeated here.

[0155] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional units and modules is used as an example. In practical applications, the above functions can be assigned to different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A touch structure, comprising: A touch layer, the touch layer including a substrate layer and an electrode layer adjacent to the substrate layer, the electrode layer being used to provide non-transparent electrodes; A touch circuit board is disposed below the touch layer, and the touch circuit board is electrically connected to the touch layer to detect touch. The touch structure is designed to be mounted under the cover plate; The touch structure is used to assemble with a biometric recognition module, which is located below the touch layer of the touch structure; The cover plate above the biometric recognition module has a light-transmitting area; The area of ​​the non-transparent electrode directly above the biometric recognition module is in the first ratio to the area of ​​the electrode layer directly above the biometric recognition module, so that the light emitted by the biometric recognition module or the light emitted by the light-emitting components around the biometric recognition module can pass through the area of ​​the electrode layer where no non-transparent electrode is provided to reach the light-transmitting area of ​​the cover plate; the first ratio is not equal to 0.

2. The touch structure according to claim 1, wherein the first proportion is not less than 4%; the first proportion is not greater than 48.7%.

3. The touch structure according to claim 1, wherein the first ratio is not less than 9% and the first ratio is not greater than 47.4%.

4. The touch structure according to claim 1, wherein the first ratio is 14.3%.

5. In the touch structure according to claim 1, the area of ​​the non-transparent electrode not directly above the biometric recognition module is in the proportion of the area of ​​the electrode layer not directly above the biometric recognition module to a first proportion; or, The ratio of the area of ​​the non-transparent electrode not directly above the biometric recognition module to the area of ​​the electrode layer not directly above the biometric recognition module is the second ratio; The second ratio is greater than the first ratio.

6. The touch structure according to claim 1, wherein: The non-transparent electrode directly above the biometric recognition module has an opening, so that light emitted by the biometric recognition module or light emitted by the light-emitting components around the biometric recognition module can pass through the opening to reach the light-transmitting area of ​​the cover plate; the light-transmitting area of ​​the cover plate is located directly above the biometric recognition module.

7. The touch structure according to claim 1, wherein the non-transparent electrode directly above the biometric recognition module is a hollow electrode structure so that the light emitted by the biometric recognition module or the light emitted by the light-emitting element around the biometric recognition module can pass through the hollow area of ​​the non-transparent electrode to the light-transmitting area of ​​the cover plate.

8. The touch structure according to claim 6, wherein the openings are spaced-apart openings, and the shape of the openings includes circular holes, rectangular holes, or frame-shaped holes.

9. The touch structure according to any one of claims 1-8, wherein the width of the non-transparent electrode directly above the biometric recognition module is less than or equal to a target width threshold, so that the light emitted by the biometric recognition module or the light emitted by the light-emitting element around the biometric recognition module can pass through the gap formed between the non-transparent electrodes directly above the biometric recognition module to reach the light-transmitting area of ​​the cover plate; The target width threshold is 1 mm; the width of the non-transparent electrode directly above the biometric recognition module is greater than or equal to 0.03 mm.

10. The touch structure according to claim 9, wherein the line width of the non-transparent electrode directly above the biometric recognition module is 0.1 mm.

11. The touch structure according to any one of claims 1-8, wherein the electrode layer includes a first electrode layer and a second electrode layer that are respectively adjacent to the upper and lower surfaces of the substrate layer, the first electrode layer is used to provide a first non-transparent electrode, and the second electrode layer is used to provide a second non-transparent electrode; the openings of the first electrode layer and the openings of the second electrode layer are connected in the vertical direction so that light can pass through the first electrode layer and the second electrode layer. The area of ​​the first non-transparent electrode directly above the biometric recognition module is in the first ratio to the area of ​​the first electrode layer directly above the biometric recognition module, and the area of ​​the second non-transparent electrode directly above the biometric recognition module is in the first ratio to the area of ​​the second electrode layer directly above the biometric recognition module, so that the light emitted by the biometric recognition module or the light emitted by the light-emitting components around the biometric recognition module can pass through the areas in the first and second electrode layers where no non-transparent electrodes are provided to reach the light-transmitting area of ​​the cover plate.

12. A touch device, comprising: The touch structure as described in any one of claims 1-11, the cover plate, and the biometric identification module; The touch device further includes a shielding layer, a first transparent adhesive and a second transparent adhesive. The first transparent adhesive is bonded between the cover plate and the touch layer, and the second transparent adhesive is bonded between the touch layer and the shielding layer. The biometric identification module is bonded to the shielding layer. The light emitted by the biometric identification module or the light emitted by the light-emitting components around the biometric identification module can pass through the light-transmitting area of ​​the shielding layer to reach the light-transmitting area of ​​the cover plate.

13. The touch device according to claim 12, wherein the cover plate includes a glass cover plate, the shielding layer is a transparent material layer, and the light emitted by the biometric identification module or the light emitted by the light-emitting element around the biometric identification module passes through the transparent material layer to reach the light-transmitting area of ​​the cover plate.

14. The touch device according to claim 12, wherein the cover plate includes a Mylar cover plate, the shielding layer is a metal reinforcing plate, and a light guide material is provided directly above the biometric recognition module and directly above the light-emitting components around the biometric recognition module to serve as the light-transmitting area of ​​the shielding layer, wherein the light-transmitting area of ​​the shielding layer is formed by filling a portion of the metal reinforcing plate with the light guide material.

15. The touch device according to claim 13, wherein, The light-transmitting area of ​​the cover plate includes a first light-transmitting area, and the biometric identification module includes an ultrasonic fingerprint identification module. The light emitted by the light-emitting element around the ultrasonic fingerprint identification module passes through the area in the electrode layer where no non-transparent electrode is provided to reach the first light-transmitting area. The touch device further includes a first adhesive, a second adhesive, a third adhesive, a light guide, and a light-emitting element. The ultrasonic fingerprint recognition module includes an ultrasonic fingerprint chip. The first adhesive is bonded between the transparent material layer and a first surface of the light guide. The second adhesive is bonded between a first region of a second surface of the light guide and the ultrasonic fingerprint chip. The third adhesive is bonded between a second region of a second surface of the light guide and the light-emitting element. The second region is the area around the second surface of the light guide. The bottom surface of the first light-transmitting area of ​​the cover plate is screen-printed with a pressing mark to indicate the fingerprint pressing area, the pressing mark including a fingerprint mark.

16. The touch device according to claim 13, wherein, The light-transmitting area of ​​the cover plate includes a second light-transmitting area, and the biometric identification module includes a health identification module. The light emitted by the health identification module passes through the area in the electrode layer where no non-transparent electrodes are provided to reach the second light-transmitting area. The touch device also includes a fourth adhesive, and the health recognition module includes a health detection circuit board, a photoelectric converter and a light signal transmitter, wherein the photoelectric converter and the light signal transmitter are electrically connected to the health detection circuit board respectively. The health detection circuit board is provided with an outer light-shielding component and an inter-space light-shielding component. The inter-space light-shielding component is provided between the photoelectric conversion component and the light signal emitting component. The outer light-shielding component is provided around the health detection circuit board. At least one of the peripheral light-shielding member and the spacer light-shielding member is bonded to the transparent material layer with the fourth adhesive. The bottom surface of the second light-transmitting area of ​​the cover plate is screen-printed with ink of the target color type.

17. The touch device according to claim 14, wherein, The light-transmitting area of ​​the cover plate includes a first light-transmitting area, and the biometric identification module includes an ultrasonic fingerprint identification module. The light emitted by the light-emitting element around the ultrasonic fingerprint identification module passes through the area in the electrode layer where no non-transparent electrode is provided to reach the first light-transmitting area. The touch device further includes a fifth adhesive, a sixth adhesive, and a light-emitting element. The ultrasonic fingerprint recognition module includes an ultrasonic fingerprint chip. The fifth adhesive is bonded between the light-guiding material directly above the ultrasonic fingerprint recognition module and the ultrasonic fingerprint chip. The sixth adhesive is bonded between the light-guiding material directly above the light-emitting element around the ultrasonic fingerprint recognition module and the light-emitting element. The bottom surface of the first light-transmitting area of ​​the cover plate is screen-printed with a pressing mark to indicate the fingerprint pressing area, the pressing mark including a fingerprint mark.

18. The touch device according to claim 14, wherein, The light-transmitting area of ​​the cover plate includes a second light-transmitting area, and the biometric identification module includes a health identification module. The light emitted by the health identification module passes through the area in the electrode layer where no non-transparent electrodes are provided to reach the second light-transmitting area. The touch device also includes a seventh adhesive, and the health recognition module includes a health detection circuit board, a photoelectric converter and a light signal transmitter, wherein the photoelectric converter and the light signal transmitter are electrically connected to the health detection circuit board respectively. The health detection circuit board is provided with an outer light-shielding component and an inter-space light-shielding component. The inter-space light-shielding component is provided between the photoelectric conversion component and the light signal emitting component. The outer light-shielding component is provided around the health detection circuit board. At least one of the peripheral light-shielding component and the spacer light-shielding component is bonded to the light guide material disposed directly above the health recognition module by the seventh adhesive. The bottom surface of the second light-transmitting area of ​​the cover plate is screen-printed with ink of the target color type.

19. The touch device according to any one of claims 12 to 17, wherein the touch surface of the cover plate is a frosted surface; or the touch surface of the light-transmitting area of ​​the cover plate is a non-frosted surface, and the other touch surfaces of the cover plate other than the light-transmitting area are frosted surfaces.

20. An electronic device comprising a touch device as described in any one of claims 12-19, or comprising a touch structure as described in any one of claims 1-11.

21. A method for preparing a touch layer of a touch structure, the touch structure being assembled under a cover plate, the touch structure being assembled with a biometric recognition module, the biometric recognition module being located below the touch layer of the touch structure, the method comprising: According to the electrode circuit pattern, the non-transparent electrodes of the electrode layer of the touch layer are etched. The ratio of the area of ​​the non-transparent electrode above the biometric identification module to the area of ​​the electrode layer above the biometric identification module is a first ratio, so that the light emitted by the biometric identification module can pass through the area of ​​the electrode layer where no non-transparent electrode is provided to reach the light-transmitting area of ​​the cover plate. The first ratio is not equal to 0.

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