Light-shielding structure, touch display module and electronic device

Abstract

The present application relates to a light-shielding structure, a touch display module, and an electronic device. The light-shielding structure includes a light-shielding layer, a first support layer, and a second support layer. The light-shielding layer has a first surface and a second surface disposed opposite to each other. The first support layer is disposed on the first surface, and the second support layer is disposed on the second surface. Wherein, the first support layer and the second support layer are configured to be deformable when a preset pressure is applied. In the light-shielding structure, the first support layer and the second support layer are respectively disposed on both sides of the light-shielding layer. When an external force is applied to the first support layer and the second support layer, the deformation caused by the external force can be revealed. An operator can know that the light-shielding structure needs to be replaced from the deformation of the second support layer, thereby improving the test yield.

Description

Technical Field

[0001] This application relates to the field of display technologies, and particularly to a light-shielding structure, a touch display module, and an electronic device. Background Art

[0002] During the preparation of a display screen, a light-shielding tape is used to improve the light leakage problem. However, when the light-shielding tape is subjected to an external force, it is difficult to know the damaged position, resulting in difficulty in improving the test yield. Summary of the Invention

[0003] Based on this, a light-shielding structure, a touch display module, and an electronic device capable of directly knowing the damaged position are provided to solve the problem of difficulty in improving the test yield.

[0004] In one aspect of this application, a light-shielding structure is provided, including:

[0005] A light-shielding layer having a first surface and a second surface disposed opposite to each other;

[0006] A first support layer disposed on the first surface; and

[0007] A second support layer disposed on the second surface;

[0008] Wherein, the first support layer and the second support layer are configured to be deformable when subjected to a preset pressure.

[0009] In one embodiment, the first support layer includes foam; and / or

[0010] The second support layer includes foam.

[0011] In one embodiment, the first support layer includes black foam; and / or

[0012] The second support layer includes black foam.

[0013] In one embodiment, the thickness of the first support layer is less than or equal to 20 microns; and / or

[0014] The thickness of the second support layer is less than or equal to 20 microns.

[0015] In one embodiment, the light-shielding layer is a light-shielding tape.

[0016] In one embodiment, the first surface has adhesiveness; and / or

[0017] The second surface has adhesiveness.

[0018] In one embodiment, the light-shielding structure further includes a protective layer;

[0019] The protective layer is disposed on one side of the first support layer along the first direction.

[0020] In one embodiment, the surface of the protective layer facing the first support layer has adhesiveness.

[0021] On the other hand, the present application also provides a touch display module, including the above-mentioned light-shielding structure.

[0022] In one embodiment, the touch display module includes a display module and a fingerprint recognition module stacked along a first direction;

[0023] The first support layer is disposed on the surface of the fingerprint recognition module facing away from the display module.

[0024] On another aspect of the present application, there is also provided an electronic device, including the above-mentioned touch display module.

[0025] For the above-mentioned light-shielding structure, touch display module and electronic device, the light-shielding structure at least includes a light-shielding layer, a first support layer and a second support layer. The first support layer and the second support layer are respectively disposed on both sides of the light-shielding layer. When the first support layer and the second support layer are subjected to an external force, the deformation caused by the external force can be directly revealed, so that it is easy for the operator to replace the light-shielding structure, thereby improving the test yield. Description of the Drawings

[0026] Figure 1 It is a schematic structural diagram of a touch display module in an embodiment of the related art;

[0027] Figure 2 It is a top view of a light-shielding structure in an embodiment of the related art;

[0028] Figure 3 It is a schematic deformation diagram of a first support layer in an embodiment of the related art;

[0029] Figure 4 It is a schematic structural diagram of a light-shielding structure in an embodiment of the present application;

[0030] Figure 5 It is a schematic deformation diagram of a first support layer in an embodiment of the present application;

[0031] Figure 6 It is a schematic deformation diagram of a second support layer in an embodiment of the present application;

[0032] Figure 7 It is a schematic structural diagram of a touch display module in an embodiment of the present application.

[0033] Brief Description of the Element Symbols:

[0034] 10, 1000: Touch display module 11, 200: Display module

[0035] 11a, 210: The first substrate 12, 300: The fingerprint recognition module

[0036] 12a, 310: The second substrate 12b, 320: The functional layer

[0037] 13, 100: The light-shielding structure 13a: The light-shielding member

[0038] 13b, 120: The first support layer 13c, 140: The protective layer

[0039] z 1 、Z 1 : The first deformation region 110: The light-shielding layer

[0040] 111: The first surface 112: The second surface

[0041] 130: The second support layer d 1 : The first thickness

[0042] d 2 : The second thickness Z 2 : The second deformation region Detailed implementation manners

[0043] To make the above objects, features, and advantages of the present application more obvious and understandable, the following describes the detailed implementation manners of the present application in conjunction with the accompanying drawings. Many specific details are set forth in the following description to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0044] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0045] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of this application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0046] In this application, unless otherwise clearly specified and defined, terms such as "installed", "connected", "joined", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal connection of two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0047] In this application, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0048] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation.

[0049] In addition, the drawings are not drawn to a 1:1 scale, and the relative sizes of the components are only drawn by way of example in the drawings and not necessarily to the true scale.

[0050] To facilitate the understanding of the technical solutions of the embodiments of this application, before elaborating on the specific implementation manners of the embodiments of this application, some technical terms in the technical field to which the embodiments of this application belong are first briefly explained.

[0051] TFT (Thin Film Transistor), that is, a thin film transistor. The TFT display screen is the mainstream display device on various notebook computers and desktop computers. Each liquid crystal pixel point on this type of display screen is driven by a thin film transistor integrated behind the pixel point.

[0052] OLED (Organic Light-Emitting Diode), that is, an organic light-emitting diode. The OLED display device has high brightness and response speed, and has the advantages of being bendable and having good flexibility. Therefore, it is increasingly widely used in intelligent terminal products such as mobile phones, tablet computers, and televisions.

[0053] To facilitate the understanding of the technical solution of this application, before elaborating in detail, the light-shielding structure and touch display module in the related technology are first described.

[0054] Currently, for the touch display module used for ultrasonic fingerprint recognition, during operation, the ultrasonic waves with characteristic frequencies emitted by the fingerprint recognition module scan the finger, and based on the different reflections of the ultrasonic waves by different parts of the finger, the graphic data of the fingerprint is established, thereby realizing the collection and recognition of the fingerprint. It should be understood that the touch display module of this application takes the one used for ultrasonic fingerprint recognition as an example for explanation rather than limitation.

[0055] Figure 1 The structural schematic diagram of the touch display module 10 in an embodiment of the related technology is shown.

[0056] As Figure 1 shown, the touch display module 10 in an embodiment of the related technology includes a display module 11 and a fingerprint recognition module 12 stacked along the first direction (i.e., the x-axis direction shown in Figure 1 . Specifically, the display module 11 includes a first substrate 11a, and the fingerprint recognition module 12 is disposed on the surface of the first substrate 11a in the first direction. The inventor found during the test that due to the large bonding area of the fingerprint recognition module 12, there is a bonding gap between the first substrate 11a and the fingerprint recognition module 12. Being exposed to light for a long time will cause uneven brightness of the display screen of the electronic device, that is, the Mura defect appears.

[0057] Figure 2 The top view of the light-shielding structure 13 in an embodiment of the related technology is shown.

[0058] Based on this, the inventor adds a light-shielding structure 13 at the opening for light shielding. Please continue to refer to Figure 1 , and in combination with Figure 2 , the light-shielding structure 13 is along the first direction (i.e., Figure 1is disposed on the surface of the fingerprint recognition module 12 facing away from the first substrate 11a in the x-axis direction shown. In some embodiments, the light-shielding structure 13 includes a light-shielding member 13a and a first support layer 13b, and the first support layer 13b is supported between the light-shielding member 13a and the fingerprint recognition module 12. Thus, by means of the first support layer 13b, on the one hand, the fingerprint recognition module 12 can be shielded from light, and on the other hand, it can also provide shock absorption and buffering when subjected to external forces. Optionally, the light-shielding member 13a is a light-shielding tape, and the first support layer 13b is a foam. Further, the light-shielding structure 13 further includes a protective layer 13c, and the protective layer 13c is disposed on the surface of the light-shielding member 13a facing away from the first support layer 13b to protect the light-shielding member 13a. In some embodiments, the fingerprint recognition module 12 has a second substrate 12a and a functional layer 12b stacked in a first direction, and the functional layer 12b is used to implement the fingerprint recognition function. Exemplarily, the second substrate 12a is a TFT substrate. The fingerprint recognition module 12 uses ultrasonic waves or other means to sense a finger, so that the touch display module 10 can operate.

[0059] Figure 3 shows a schematic diagram of the deformation of the first support layer 13b in an embodiment of the related art.

[0060] During the in-factory production line shipping inspection, the inventor found that there were often defects in signal testing. After research, the inventor found that during manual testing, packaging, transportation, etc., the touch display module 10 may be collided. After being subjected to external stress, the first support layer 13b will be deformed due to the force, that is, as Figure 3 shown in the first deformation region z 1 . And as Figure 2 shown, since the deformation cannot be shown on the surface of the light-shielding member 13a, that is, it is difficult to directly know the existence of the first deformation region z 1 in the first support layer 13b from the appearance of the touch display module 10, which makes it difficult for the operator to judge whether the light-shielding structure 13 is qualified, and further leads to difficulty in improving the yield.

[0061] Based on this, through in-depth research, the inventor of the present application improved the light-shielding structure 13 so that the occurring deformation can be visually revealed, which is easy for the operator to observe, and the deformed light-shielding structure 13 can be replaced.

[0062] For ease of description, the drawings only show the structures related to the embodiments of the present application.

[0063] Figure 4 shows a schematic diagram of the structure of the light-shielding structure 100 in an embodiment of the present application; Figure 5 shows a schematic diagram of the deformation of the first support layer 120 in an embodiment of the present application; Figure 6Shows a deformation schematic diagram of the second support layer 130 in an embodiment of the present application.

[0064] Combined with Figure 4 , Figure 5 and Figure 6 As shown, an embodiment of the present application provides a light-shielding structure 100, including a light-shielding layer 110, a first support layer 120, and a second support layer 130. The light-shielding layer 110 has a first surface 111 and a second surface 112 disposed opposite to each other. The first support layer 120 is disposed on the first surface 111, and the second support layer 130 is disposed on the second surface 112. Among them, the first support layer 120 and the second support layer 130 are configured to be deformable when subjected to a preset pressure.

[0065] For the light-shielding structure 100 provided by the present application, the first support layer 120 and the second support layer 130 are respectively disposed on both sides of the light-shielding layer 110. When the first support layer 120 and the second support layer 130 are subjected to an external force, the deformations caused by the external force can be directly revealed. Among them, deformation means a change relative to its original shape. Since the first support layer 120 and the second support layer 130 are respectively disposed on both sides of the light-shielding layer 110, when subjected to an external stress, the relative positions of the two will show the same deformation, that is, as Figure 5 shown in the first deformation region Z on the first support layer 120 1 , and as Figure 6 shown in the second deformation region Z on the second support layer 130 2 . Due to the external pressure, the first deformation region Z 1 and the second deformation region Z 2 are usually concave. It can be understood that when the second support layer 130 is observed to be deformed, correspondingly, the first support layer 120 is also deformed. In this way, it is easy for the operator to intuitively judge the light-shielding structure 100 that does not meet the requirements due to deformation, and replace the light-shielding structure 100 based on this judgment, thereby improving the test yield. It should be noted that the source of the preset pressure includes but is not limited to manual testing or collisions during the processes of packing, transportation, etc.

[0066] Foam is a polymer material with multiple pores formed by foaming plastic particles. Its solid phase is a polymer matrix, and the pores are filled with gas. The inventor has found through research that foam will exhibit stress relaxation under compressive stress. Stress relaxation refers to the phenomenon that under the condition of constant total deformation, elastic deformation continuously transforms into plastic deformation over time, resulting in a gradual decrease in stress and tending to a stable value. It is precisely because of this that foam can be deformed after being subjected to an external pressure and maintain the deformation that occurred when the external stress disappeared.

[0067] Based on this, please refer to again Figure 4 , in some embodiments, the first support layer 120 includes foam. In this way, it is easy for the first support layer 120 to maintain deformation when under pressure, so that through this deformation, the pressure condition of the first support layer 120 can be intuitively known, that is, it reflects the pressure condition of the light-shielding structure 100. In addition, the foam can also absorb impact and vibration, so as to buffer and damp external stress. In still some other embodiments, the second support layer 130 includes foam. In this way, the second support layer 130 can deform when subjected to an external force and continue to maintain this deformation when the external force disappears.

[0068] Please refer to again Figure 5 and Figure 6 , and in combination with Figure 4 , the above deformation intuitively reflects the pressure condition of the second support layer 130, and through the second deformation region Z 2 of the second support layer 130, on the one hand, it can display the pressure condition of the second support layer 130, and on the other hand, the second deformation region Z 2 also represents that the corresponding position of the first support layer 120 has also deformed, that is, there is a first deformation region Z 1 . The operator can directly know that the first support layer 120 facing the fingerprint recognition module 300 has also deformed through the deformation of the second support layer 130, so that it is easy for the operator to replace the light-shielding structure 100.

[0069] As Figure 4 shown, the foam can also buffer and damp external stress, improving the seismic resistance effect of the light-shielding structure 100. Moreover, the foam also has characteristics such as light weight, elasticity, fast pressure-sensitive fixation, convenient use, flexible bending, ultra-thin volume, and reliable performance. In the implementation manner of the present application, the first support layer 120 includes foam, and the second support layer 130 includes foam. In this way, both the first support layer 120 and the second support layer 130 are foam, which can not only simplify the preparation process and reduce the cost of the light-shielding structure 100, but also be easily adapted to other module structures when applying the light-shielding structure 100 to the touch display module 1000 and electronic devices in some of the following embodiments.

[0070] Please continue to refer to Figure 4, Specifically in some embodiments, the first support layer 120 may be EPE foam or XPE foam. EPE foam, also known as pearl cotton, is composed of countless independent bubbles generated by physical foaming of low-density polyethylene resin. EPE foam has good softness and cushioning properties, and can also be recycled and naturally degraded, making it an environmentally friendly and pollution-free foam material. XPE (cross-linked polyethylene), also known as cross-linked foam, has a high foaming ratio, low density, thin thickness, smooth surface, high elasticity and toughness compared with other foams. At the same time, XPE foam is also easy to be processed secondary and has better versatility. Specifically in some other embodiments, the second support layer 130 may be XPE foam or XPE foam. Of course, in other embodiments, it may also be other foams, which are not limited herein.

[0071] Refer to Figure 4 , In some embodiments, the first support layer 120 includes black foam. Since black foam can fully absorb incident light, the black foam has better light-shielding properties. Based on this, the first support layer 120 of black foam can further improve the light-shielding effect on the basis of the light-shielding of the light-shielding layer 110. In some other embodiments, the second support layer 130 includes black foam. Thus, the second support layer 130 of black foam can also further improve the light-shielding effect on the basis of the light-shielding of the light-shielding layer 110. Specifically in the embodiments of the present application, both the first support layer 120 and the second support layer 130 are black foam. Thus, the first support layer 120 and the second support layer 130 can cooperate with the light-shielding layer 110 to shield light from both sides of the light-shielding layer 110 respectively.

[0072] As Figure 4 shown, in some embodiments, the thickness of the first support layer 120 is less than or equal to 20 microns. Define the thickness dimension of the first support layer 120 as the first thickness d 1 , Thus, the first thickness d 1 of the first support layer 120 can meet the dimensional requirements of the light-shielding structure 100, and since the first thickness d 1 of the first support layer 120 is less than or equal to 20 microns, it is difficult to rebound after being pressed, so that the first deformation region Z 1 appearing due to compression can show the compression condition. In some other embodiments, the thickness of the second support layer 130 is less than or equal to 20 microns. Define the thickness dimension of the second support layer 130 as the second thickness d 2 , Thus, while meeting the dimensional requirements of the light-shielding structure 100, it can avoid rebound caused by the excessive second thickness d 2 , resulting in the inability to show the second deformation region Z 2 . In the embodiments of the present application, the first thickness d 1and the second thickness d of the second support layer 130 2 are both less than or equal to 20 microns. In this way, through the combined action of the first support layer 120 and the second support layer 130, when pressure is applied, both the first support layer 120 and the second support layer 130 can deform when pressure is applied, and rebound is avoided, so that through the second deformation region Z of the second support layer 130 2 , it can be intuitively known that there is also a corresponding first deformation region Z in the first support layer 120 1 , and then it is easy for the operator to replace the light-shielding structure 100.

[0073] Continue to refer to Figure 4 . In some embodiments, the light-shielding layer 110 is a light-shielding tape. The light-shielding tape is an adhesive material that can shield light sources and block the penetration of light sources. The light-shielding tape is obtained by specially treating the surface of a special substrate, so as to achieve partial light shielding or complete light shielding, and the back of the light-shielding tape is coated with a strong and durable adhesive on one or both sides for bonding. The light-shielding tape has excellent light-shielding performance, soft material, firm adhesion and is not easy to warp. It is a low-cost and effective auxiliary product. In this way, with the help of the light-shielding tape, while ensuring the light-shielding effect of the light-shielding layer 110, it is easy to bond the light-shielding layer 110 with other film layers or modules. Specifically, the light-shielding layer 110 is a black light-shielding tape. In this way, black can further improve the light-shielding effect.

[0074] Please continue to refer to Figure 4 . In some embodiments, the first surface 111 has adhesiveness. In this way, the adhesiveness of the first surface 111 can easily bond the first support layer 120 to the light-shielding layer 110, so that the first support layer 120 can be stably fixed. In still other embodiments, the second surface 112 has adhesiveness. In this way, the adhesiveness of the second surface 112 can easily bond the second support layer 130 to the light-shielding layer 110, so that the second support layer 130 can be stably fixed. In the embodiments of the present application, both the first surface 111 and the second surface 112 have adhesiveness. In this way, the first support layer 120 and the second support layer 130 can be stably fixed at the same time.

[0075] As Figure 4 shown, in combination with Figure 5 and Figure 6 , in some embodiments, the light-shielding structure 100 further includes a protective layer 140, and the protective layer 140 is disposed on the first support layer 120 along the first direction (i.e., Figure 4On one side in the x - axis direction shown in the figure. In this way, the protective layer 140 can protect the first support layer 120 and the light - shielding layer 110, preventing the light - shielding structure 100 from being scratched during transportation and improving the wear - resistance of the light - shielding structure 100. Specifically, in some embodiments, the surface of the protective layer 140 facing the first support layer 120 has adhesiveness. In this way, on the one hand, the adhesiveness of the protective layer 140 can be used to stably fix the first support layer 120 between the protective layer 140 and the light - shielding layer 110. On the other hand, it can also prevent the protective layer 140 from shifting, resulting in ineffective protection.

[0076] Figure 7 The figure shows a schematic structural diagram of a touch - display module 1000 in an embodiment of the present application.

[0077] Refer to Figure 7 On the other hand, the present application also provides a touch - display module 1000, including the above - mentioned light - shielding structure 100. By using the above - mentioned light - shielding structure 100, on the one hand, the light - shielding structure 100 can be used for light - shielding. On the other hand, when the light - shielding structure 100 is subjected to external stress, the first support layer 120 and the second support layer 130 on the light - shielding structure 100 can visually display the deformation caused by the force, so that it is easy for the operator to replace the light - shielding structure 100 in time, thereby improving the test yield of the touch - display module 1000.

[0078] As Figure 7 shown, in some embodiments, the touch - display module 1000 further includes a display module 200 and a fingerprint recognition module 300 stacked along a first direction (i.e., the x - axis direction shown in Figure 7 the figure). The first support layer 120 is disposed on the surface of the fingerprint recognition module 300 facing away from the display module 200. In this way, the fingerprint recognition module 300 can be shielded from light by the light - shielding structure 100, and the first support layer 120 and the second support layer 130 in the light - shielding structure 100 can visually display the deformation caused by the force, so that it is easy for the operator to observe the defects and replace the light - shielding structure 100 in time, avoiding risks such as poor signal after the touch - display module 1000 continues to be assembled into an electronic device when the light - shielding structure 100 has already had a depression. Specifically, the fingerprint recognition module 300 has a second substrate 310 and a functional layer 320 stacked in the first direction. The functional layer 320 is used to implement the fingerprint recognition function. Exemplarily, the second substrate 310 is a TFT substrate. The fingerprint recognition module 300 senses the finger using ultrasonic waves or other means, so that the touch - display module 1000 can work. More specifically, the display module 200 includes a first substrate 210. The fingerprint recognition module 300 is disposed on the surface of the first substrate 210. Exemplarily, the first substrate 210 is an OLED substrate.

[0079] Combined withFigure 7 As shown, another aspect of the present application further provides an electronic device, comprising the above-mentioned touch display module 1000. The electronic device using the above-mentioned touch display module 1000 can replace the shading structure 100 in time through the deformation of the intuitive display, thereby ensuring that the touch display module 1000 can work normally, thereby improving the test yield of the electronic device and reducing the risk of poor signal in the electronic device.

[0080] The above-mentioned electronic devices include mobile phone terminals, bionic electronics, electronic skin, wearable devices, vehicle-mounted devices, Internet of Things devices, artificial intelligence devices and other fields. For example, the above-mentioned electronic devices can be mobile phone terminals, tablets, PDAs, iPods, smart watches, laptop computers, televisions, monitors, etc.

[0081] Combination Figure 4 , Figure 5 , Figure 6 and Figure 7 , the shading structure 100, the touch display module 1000 and the electronic device provided by the embodiment of the present application, the shading structure 100 at least includes a shading layer 110, a first supporting layer 120 and a second supporting layer 130. The first supporting layer 120 and the second supporting layer 130 are respectively arranged on both sides of the shading layer 110, and the first supporting layer 120 and the second supporting layer 130 can directly reveal the deformation caused by the external force when subjected to external force. Among them, deformation refers to a change relative to its original shape. Since the first supporting layer 120 and the second supporting layer 130 are respectively arranged on both sides of the shading layer 110, when subjected to external stress, the relative positions thereof will both show the same deformation. It can be understood that when the second supporting layer 130 can be observed to be deformed, the first supporting layer 120 is also deformed accordingly. In this way, it is easy for the operator to intuitively judge the shading structure 100 that does not meet the requirements due to deformation, and replace the shading structure 100 based on the judgment, thereby improving the test yield. The first supporting layer 120 and the second supporting layer 130 are black foam, which can ensure intuitive display of deformation on one hand, and buffer external stress on the other hand, thereby improving the shock resistance of the touch display module 1000. In addition, the black foam has better light-shielding properties, which can further improve the light-shielding effect of the light-shielding structure 100.

[0082] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0083] The above-described embodiments merely represent several implementation manners of the present application. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patented application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all fall within the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. A touch display module, characterized in that, it includes a light-shielding structure, and the light-shielding structure includes: a light-shielding layer having a first surface and a second surface disposed opposite to each other; a first support layer disposed on the first surface; and a second support layer disposed on the second surface; wherein, the first support layer and the second support layer are configured to be able to undergo the same deformation at opposite positions of the first support layer and the second support layer when subjected to a preset pressure; the touch display module includes a display module and a fingerprint recognition module stacked in a first direction, and the light-shielding structure is disposed on a surface of the fingerprint recognition module facing away from the display module.

2. The touch display module according to claim 1, characterized in that, the first support layer includes foam; and / or the second support layer includes foam.

3. The touch display module according to claim 2, characterized in that, the first support layer includes black foam; and / or the second support layer includes black foam.

4. The touch display module according to claim 1, characterized in that, the thickness of the first support layer is less than or equal to 20 microns; and / or the thickness of the second support layer is less than or equal to 20 microns.

5. The touch display module according to any one of claims 1-4, characterized in that, the light-shielding layer is a light-shielding tape.

6. The touch display module according to any one of claims 1-4, characterized in that, the first surface has adhesiveness; and / or the second surface has adhesiveness.

7. The touch display module according to any one of claims 1-4, characterized in that, the light-shielding structure further includes a protective layer; the protective layer is disposed on one side of the first support layer along the first direction.

8. The touch display module according to claim 7, characterized in that, the surface of the protective layer facing the first support layer has adhesiveness.

9. An electronic device, characterized in that, it includes the touch display module according to any one of claims 1 to 8.

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