A display module and a display device

Abstract

An embodiment of the present application provides a display module and a display device, including a display panel, a rigid film, and a sensor component; the rigid film is disposed on the backlight side of the display panel; the rigid film includes a connected first part and a second part, and the orthographic projection of the second part on the plane where the display panel is located is located outside the orthographic projection of the first part on the plane where the display panel is located; the first part is attached to the display panel through a first adhesive film; the second part includes a first surface facing the display panel, the curvature of the first surface is greater than 0 and the first surface is curved away from the display panel; the sensor component is located on the side of the first part away from the display panel. In the present application, the sensor component is not directly attached to the display panel, but is fixed to the display panel through the rigid film. The edge position where the rigid film contacts the display panel is located in the second part, and the second part is a curved structure, which can avoid stress concentration at the edge where the display panel is attached to the rigid film and avoid indentation on the display panel.

Description

Technical Field

[0001] The present application relates to the field of display technologies, and particularly relates to a display module and a display device.

Background Art

[0002] Display devices have occupied an increasingly important position in people's lives. With the increasing demand of customers for display devices, the number of sensor components that need to be integrated in display devices is also increasing day by day. For example, optical sensors need to be integrated in display devices to achieve fingerprint detection, face detection, etc.; for example, sound sensors need to be integrated in display devices to achieve voice control of display devices by users.

[0003] With the development of flexible display screens, flexible display devices have gradually been favored by manufacturers and consumers. However, the yield rate of flexible display devices after integrating sensor components is not optimistic.

[0004]

Content of the Application

[0005] In view of this, embodiments of the present application provide a display module and a display device to solve the above problems.

[0006] In a first aspect, an embodiment of the present application provides a display module, including a display panel, a rigid film, and a sensor component; the rigid film is disposed on one side of the backlight surface of the display panel; the rigid film includes a connected first part and a second part, and the orthographic projection of the second part on the plane where the display panel is located is located outside the orthographic projection of the first part on the plane where the display panel is located; the first part is attached to the display panel through a first adhesive film; the second part includes a first surface facing the display panel, the curvature of the first surface is greater than 0 and the first surface is curved away from the display panel; the sensor component is located on the side of the first part away from the display panel.

[0007] In a second aspect, an embodiment of the present application provides a display device, including the display module provided in the first aspect.

[0008] In the technical solution provided by the embodiments of the present application, the sensor component is not directly attached to the display panel, but is fixed to the display panel through the rigid film. In the embodiments of the present application, the sensor component is not directly attached to the display panel, but is fixed to the display panel through the rigid film. The main part of the rigid film attached to the display panel is the first part, and the second part connected to the first part has a certain curvature. When an external force is applied to the rigid film and / or the display panel to make the rigid film attached to the display panel, stress concentration will not occur at the edge of the contact position between the display panel and the rigid film, and thus obvious deformation can be avoided when the display panel is attached to the rigid film. In addition, during the process of attaching the rigid film to the display panel, a force needs to be applied to the surface of the first part away from the display panel, and the edge position where the rigid film contacts the display panel is located in the second part, which will also avoid the display panel from having indentations.

BRIEF DESCRIPTION OF THE DRAWINGS

[0009] To more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0010] Figure 1 Schematic diagram of a display module provided by an embodiment of the present application;

[0011] Figure 2 Fitting schematic diagram of a sensor device in a display module related to an embodiment of the present application;

[0012] Figure 3 For Figure 2 Enlarged schematic diagram of the AA area in

[0013] Figure 4 For Figure 1 Enlarged schematic diagram of the BB area in

[0014] Figure 5 Schematic diagram of a display module provided by an embodiment of the present application;

[0015] Figure 6 Schematic diagram of a display module provided by an embodiment of the present application;

[0016] Figure 7 Schematic diagram of a display module provided by an embodiment of the present application;

[0017] Figure 8 Schematic diagram of a display module provided by an embodiment of the present application;

[0018] Figure 9 Schematic diagram of a hard film and a sensor device in a display module provided by an embodiment of the present application;

[0019] Figure 10 Partial plan schematic diagram of a display module provided by an embodiment of the present application;

[0020] Figure 11 For Figure 10 Cross-sectional schematic diagram along the M1 - M2 direction in

[0021] Figure 12 Schematic diagram of a display device provided by an embodiment of the present application.

DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] To better understand the technical solutions of the present application, the embodiments of the present application will be described in detail below with reference to the drawings.

[0023] It should be clear that the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0024] The terms used in the embodiments of this application are only for the purpose of describing specific embodiments, and are not intended to limit this application. The singular forms of "a", "the" and "said" used in the embodiments of this application and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0025] It should be understood that the term "and / or" used herein is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " herein generally represents an "or" relationship between the associated objects before and after.

[0026] In the description of this specification, it should be understood that the words "substantially", "approximately", "about", "around", "roughly", "generally" and the like described in the claims and embodiments of this application refer to what can be generally recognized within a reasonable process operation range or tolerance range, rather than an exact value.

[0027] It should be understood that although the terms first, second, third, etc. may be used in the embodiments of this application to describe parts, etc., these parts, etc. should not be limited to these terms. These terms are only used to distinguish parts from each other. For example, without departing from the scope of the embodiments of this application, the first part may also be called the second part, and similarly, the second part may also be called the first part.

[0028] Through careful and in-depth research, the applicant of this case provides a solution to the problems existing in the prior art.

[0029] Figure 1 It is a schematic diagram of a display module provided for the embodiments of this application.

[0030] Such as Figure 1As shown in the figure, the display module 001 provided by the embodiment of the present application includes a display panel 01, a hard film 02, and a sensor device 03. The hard film 02 and the sensor device 03 are both disposed on the backlight side of the display panel 01. The sensor device 03 is fixed to the display panel 01 and can be used to receive signals sent from one side of the display panel 01. In the embodiment of the present application, the sensor device 03 is not directly attached to the display panel 01, but is fixed to the display panel 01 through the hard film 02. Specifically, the hard film 02 is attached to the display panel 01 and the sensor device 03 is fixed to the hard film 02.

[0031] Among them, the display panel 01 can be a flexible display panel, and then the display module 001 provided by the embodiment of the present application can be a flexible display module or a curved display module. The sensor device 03 can be at least one of a sound sensor, an optical sensor, and a pressure sensor.

[0032] The display module 001 may further include a composite layer 04. The composite layer 04 is disposed on the backlight side of the display panel 01 and attached to the display panel 01, and is used to support and protect the display panel 01. The composite layer 04 may include a copper foil and a foam. The copper foil is used to increase the heat dissipation of the display panel 01 and can shield the influence of external signals on the display panel 01, and the foam can play a buffering role.

[0033] Figure 2 FIG. is a fitting schematic diagram of a sensor device in a display module related to an embodiment of the present application. Figure 3 is Figure 2 an enlarged schematic diagram of the AA area in

[0034] Combined with Figure 2 and Figure 3 , if the sensor device 03 is directly attached to the display panel 01, then during the attachment process, the attachment device 002 needs to press the sensor device 03 and / or the display panel 01, and obvious indentations will appear at the attachment position of the display panel 01 and the sensor device 03. This affects the visual appearance of the display module 001 during display.

[0035] The inventor analyzed the above problems and found that the main reason for the above problems is that, combined with Figure 2 and Figure 3As shown, there are relatively sharp edges and corners between the surface of the sensor device 03 facing the display panel 01 and its side surfaces. When the laminating device 002 presses the sensor device 03 and / or the display panel 01, stress concentration will occur at the position of the display panel 01 corresponding to the edge of the sensor device 03. When the stress near the position where the display panel 01 contacts the edge of the sensor device 03 exceeds the yield limit of the display panel 01, redistribution of stress will occur, and obvious deformation will occur at the position where the display panel 01 contacts the edge of the sensor device 03. Moreover, this deformation will hardly recover after the external force applied by the laminating device 002 disappears. Therefore, obvious indentations that can be clearly recognized by the human eye will appear on the display panel 01.

[0036] In the embodiment of the present application, as Figure 1 shown, the hard film 02 includes a connected first part 21 and a second part 22, and the orthographic projection of the second part 22 on the plane where the display panel 01 is located is outside the orthographic projection of the first part 21 on the plane where the display panel 01 is located, that is, the orthographic projection of the second part 22 along the first direction Y is outside the orthographic projection of the first part 21 along the first direction Y. The first direction Y is perpendicular to the plane where the display module 001 is located. The first part 21 and the second part 22 are different parts of the hard film 02, and the second part 22 is connected to the edge of the first part 21.

[0037] For example, as Figure 1 shown, the second part 22 is provided on both opposite sides of the first part 21 and is connected thereto. For example, the orthographic projection of the second part 22 on the plane where the display panel 01 is located may at least partially surround the orthographic projection of the first part 21 on the plane where the display panel 01 is located. Optionally, the orthographic projection of the second part 22 on the plane where the display panel 01 is located may surround the orthographic projection of the first part 21 on the plane where the display panel 01 is located.

[0038] Among them, the first part 21 faces the display panel 01 and is laminated with the display panel 01. Specifically, the first part 21 is on the backlight side of the display panel 01 through the first adhesive film 05. And the sensor device 03 is located on the side of the first part away from the display panel 01. Specifically, the sensor device 03 is laminated with the side of the first part 21 away from the display panel 01.

[0039] In the embodiment of the present application, the composite layer 04 may include a first opening 40. The orthographic projection of the first opening 40 on the plane where the display panel 01 is located covers the orthographic projection of the first portion 21 on the plane where the display panel 01 is located. Also, since both the composite layer 04 and the first portion 21 are attached to the display panel 01, it can be seen that, specifically, the first portion 21 is attached to the display panel 01 exposed by the first opening 40 of the composite layer 04. Then, at least part of the hard film 02 and the sensor device 03 is located within the first opening 40. If the sensor device 03 is directly disposed on the composite layer 04, the thickness of the display module 001 will increase; while by disposing at least part of the sensor device 03 within the first opening 40, it is beneficial to reduce the thickness of the display module 001.

[0040] In addition, by providing a first opening 40 penetrating through the thickness of the composite layer 04 and disposing the sensor device 03 within the first opening 40, the adverse effects of the composite layer 04 on the sensor device 03 can be eliminated. For example, when the sensor device 03 is an optical sensor, disposing the sensor device 03 within the area where the first opening 40 of the composite layer 04 is located can prevent the composite layer 04 from blocking the optical signal that the sensor device 03 needs to receive; for example, when the sensor device 03 is a sound sensor, disposing the sensor device 03 within the area where the first opening 40 of the composite layer 04 is located can prevent the composite layer 04 from muffling the sound signal that the sensor device 03 needs to receive.

[0041] Figure 4 For Figure 1 the enlarged schematic view of the BB area in

[0042] Among them, as Figure 4 shown, the second portion 22 includes a first surface 220 facing the display panel 01. The curvature of the first surface 220 is greater than 0 and the first surface 220 is curved away from the display panel 01. Then it can be understood that the surface of the first portion 21 of the hard film 02 facing the display panel 01 smoothly transitions to the surface of the second portion 22 facing the display panel 01.

[0043] Reference Figure 1 and Figure 4 , the first portion 21 has a planar structure, and the sensor device 03 is attached to the side of the first portion 21 away from the display panel 01. That is, the specific manner in which the sensor device 03 is fixed to the display panel 01 is that the sensor device 03 is attached to the side of the first portion 21 of the hard film 02 away from the display panel 01, and the side of the first portion 21 of the hard film 02 facing the display panel 01 is attached to the display panel 01 through the first adhesive film 05.

[0044] Reference Figure 1 and Figure 4, the second part 22 is a curved surface structure that bends away from the display panel 01. In addition, the curvature of the surface of the second part 22 facing the display panel 01 is relatively small near the position where it contacts the first part 21, and within a certain range, the curvature of the second part 22 can gradually increase along the direction away from the first part 21.

[0045] As Figure 4 shown, when an external force is applied to the hard film 02 and / or the display panel 01 to make the hard film 02 fit with the display panel 01, the deformation of the display panel 01 at the edge position corresponding to the hard film 02 is relatively gentle, which reduces the stress concentration coefficient at any position where the display panel 01 fits with the hard film 02. That is, when the display panel 01 fits with the hard film 02 provided in the embodiment of the present application, there is no stress concentration at the edge of the contact position between the display panel 01 and the hard film 02, and thus obvious deformation can be avoided when the display panel 01 fits with the hard film 02.

[0046] In addition, during the process of fitting the hard film 02 with the display panel 01, a force needs to be applied to the surface of the first part 21 away from the display panel 01, and the edge position where the display panel 01 contacts the hard film 02 is located in the second part 22. That is, during the process of fitting the hard film 02 with the display panel 01, the external force received by the edge of the position where the hard film 02 contacts the display panel 01 is relatively small, which can also effectively avoid the appearance of indentations on the display panel 01.

[0047] In the embodiment of the present application, the sensor device 03 is not directly attached to the display panel 01, but is fixed to the display panel 01 through the hard film 02. As analyzed above, during the process of fitting the hard film 02 with the display panel 01, no obvious indentation will appear on the display panel 01; and because the texture of the hard film 02 is relatively hard, therefore, when the sensor device 03 is attached to the hard film 02, the deformation of the hard film 02 is small and no obvious indentation will appear.

[0048] It should be noted that the storage modulus of the hard film 02 is greater than the storage modulus of the film material in the display panel 01 that fits with the hard film 02, that is, the overall texture of the hard film 02 is harder than the texture of the film material in the display panel 01 that fits with the hard film 02.

[0049] In an embodiment of the present application, the first adhesive film 05 can be a transparent adhesive film, and the sensor device 03 can be an optical sensor. Then, the first adhesive film 05 being a transparent adhesive film can ensure that the sensor device 03 can receive the optical signal sent from the light-emitting surface side of the display panel 01, or can ensure that the sensor device 03 can send an optical signal to the light-emitting surface side of the display panel 01.

[0050] In a technical solution corresponding to this embodiment, if the hard film 02 is a transparent film, it can ensure that the sensor device 03 can receive the optical signal sent from the light-emitting surface side of the display panel 01, or it can ensure that the sensor device 03 can send an optical signal to the light-emitting surface side of the display panel 01.

[0051] In an embodiment of the present application, as Figure 1 shown, the composite layer 04 can be attached to the display panel 01 through the first adhesive film 05, that is, both the hard film 02 and the composite layer 04 are attached to the display panel 01 through the first adhesive film 05. At this time, as Figure 1 shown, the first adhesive film 05 attached to the hard film 02 and the first adhesive film 05 attached to the composite layer 04 can be a continuous adhesive film.

[0052] Then when hollowing out the composite layer 04 to form the first opening 40, the first adhesive film 05 in the area where the first opening 40 is located can be retained, saving costs and having a simple process.

[0053] In a technical solution corresponding to this embodiment, the first adhesive film 05 can be a light-shielding adhesive film, so the first adhesive film 05 can block the light on the backlight side of the display panel 01, thereby protecting the components in the display panel 01 from the interference of these lights.

[0054] In this technical solution, the sensor device 03 can be other types of sensor devices 03 except for optical sensors. For example, the sensor device 03 included in this technical solution can be a sound sensor, a pressure sensor, etc.

[0055] Figure 5 It is a schematic diagram of a display module provided by an embodiment of the present application.

[0056] In an embodiment of the present application, as Figure 5 shown, the composite layer 04 is attached to the display panel 01 through the second adhesive film 06, that is, the second adhesive film 06 for attaching the composite layer 04 to the display panel 01 is different from the first adhesive film 05 for attaching the hard film 02 to the display panel 01. Then the adhesive film between the first part 21 for attaching the hard film 02 and the display panel 01 can be flexibly selected according to needs.

[0057] In a technical solution corresponding to this embodiment, the second adhesive film 06 is a light-shielding adhesive film and the first adhesive film 05 is a transparent adhesive film. The second adhesive film 06 being a light-shielding adhesive film can block the light on the backlight side of the display panel 01, thereby protecting the components in the display panel 01 from the interference of these lights; the first adhesive film 05 being a transparent adhesive film can ensure that the sensor device 03 receives the optical signal emitted from the light-emitting surface side of the display panel 01.

[0058] In this technical solution, the sensor device 03 can be an optical sensor. For example, the sensor device 03 can specifically be an optical sensor for fingerprint recognition, an optical sensor for face recognition, etc. In addition, the sensor device 03 can also be other types of sensor devices 03 other than optical sensors.

[0059] Figure 6 Schematic diagram of a display module provided by an embodiment of the present application.

[0060] In an embodiment of the present application, as Figure 6 shown, a flexible protective film 11 is provided on the backlight side of the display panel 01, and the flexible protective film 11 can play a role in physically protecting the film layers in the display panel 01. Among them, the flexible protective film 11 can specifically be a polyimide (Polyimide Film, PI) film. In addition, a flexible cover plate 12 is provided on the light-emitting surface side of the display panel 01, and the flexible cover plate 12 can also play a role in physically protecting the film layers in the display panel 01. The flexible cover plate 12 can specifically also be a polyimide (Polyimide Film, PI) film.

[0061] Among them, the composite layer 04 is attached to the display panel 01 through the first adhesive film 05, specifically, it can be attached to the flexible protective film 11 in the display panel 01; the hard film 02 is attached to the display panel 01, specifically, it can be attached to the flexible protective film 11 in the display panel 01.

[0062] In a technical solution corresponding to this embodiment, the first part 21 is attached to the flexible protective film 11 in the display panel 01 through the first adhesive film 05, and the storage modulus of the first adhesive film 05 is greater than the storage modulus of the flexible protective film 11 and less than the storage modulus of the hard film 02. That is, the storage modulus of the adhesive film used to attach the hard film 02 and the flexible protective film 11 is greater than the storage modulus of the flexible protective film 11 and less than the storage modulus of the hard film 02. Therefore, in the process of attaching the hard film 02 and the flexible protective film 11, the hardness of the adhesive film between the two is between the two, and the problem of unevenness caused by inconsistent deformation of different film layers with large hardness differences is minimized as much as possible.

[0063] It should be noted that the hard film 02 in the embodiment of the present application can be light-transmitting or light-blocking. When the sensor device 03 is an optical sensor, the hard film 02 should be a light-transmitting structure; when the sensor device 03 is other sensors other than optical sensors, the hard film 02 can be a light-transmitting structure or a light-blocking structure.

[0064] Figure 7 Schematic diagram of a display module provided by an embodiment of the present application.

[0065] In one embodiment of the present application, the hard film 02 further includes a third portion 23, and the third portion 23 is located on the side of the composite layer 04 away from the display panel 01 and is attached to the composite layer 04. In addition to the first portion 21 of the hard film 02 being attached to the display panel 01, the third portion 23 thereof is also attached to the composite film 04, increasing the attachment stability of the hard film 02.

[0066] Specifically, as Figure 7 shown, the third portion 23 of the hard film 02 is the portion of the hard film 02 extending outside the first opening 40, and this portion is bent in a direction away from the first opening 40 along a direction parallel to the second direction X to form a handle portion, and the third portion 23 serving as the handle portion is attached to the composite layer 04. The second direction X is parallel to the plane where the display module is located, that is, the second direction X can be perpendicular to the first direction Y.

[0067] In this embodiment, as Figure 7 shown, the specific structure of the hard film 02 can be regarded as a concave-convex structure formed by the middle portion (the first portion 21) protruding toward the display panel 01 relative to the edge portion (the third portion 23).

[0068] In this embodiment, since the handle portion of the hard film 02 is attached to the composite layer 04, during the attachment process, the edge of the hard film 02 will exert pressure on the composite layer 04 without affecting the shape of the display panel 01. Since the overall texture of the hard film 02 is relatively hard, during the process of attaching the third portion 23 of the hard film 02 to the composite layer 04, even if the pressure received by the portion of the composite layer 04 in contact with the edge of the hard film 02 is different from the pressure received by the portion of the composite layer 04 in contact with other positions of the hard film 02, the indentation on the composite layer 04 is not obvious and will not affect the display panel 01.

[0069] In this embodiment, the processes of attaching the third portion 23 and the first portion 21 of the hard film 02 to the composite layer 04 and the display panel 01 respectively can be carried out simultaneously.

[0070] In a technical solution corresponding to this embodiment, as Figure 7 shown, the adhesive film for attaching the third portion 23 of the hard film 02 to the composite layer 04 can be the same as the adhesive film for attaching the first portion 21 of the hard film 02 to the display panel 01. For example, the third portion 23 of the hard film 02 is attached to the composite layer 04 through the first adhesive film 05 and the first portion 21 of the hard film 02 is also attached to the display panel 01 through the first adhesive film 05.

[0071] Figure 8 Schematic diagram of a display module provided by an embodiment of the present application.

[0072] In a technical solution corresponding to this embodiment, as Figure 8As shown, the adhesive film where the third part 23 of the rigid film 02 is attached to the composite layer 04 can be different from the adhesive film where the first part 21 of the rigid film 02 is attached to the display panel 01. For example, the storage modulus of the adhesive film 07 between the third part 23 of the rigid film 02 and the composite layer 04 is less than the storage modulus of the adhesive film between the first part 21 of the rigid film 02 and the display panel 01.

[0073] In an embodiment of the present application, as Figure 7 and Figure 8 shown, a groove structure 20 is provided on the side of the rigid film 02 away from the display panel 01. The bottom of the groove structure 20 includes a first part 21, and the opening of the groove structure 20 faces away from the display panel 01. For example, as Figure 7 and Figure 8 shown, the first part 21 and part of the second part 22 of the rigid film 02 form the bottom of the groove structure 20, and the part between the second part 22 and the third part 23 and part of the second part 22 form the side wall of the groove structure 20. Since the curvature of the second part 22 is greater than 0, the bottom and the side wall of the groove structure 20 are in a form of curved transition.

[0074] In one implementation manner, the specific way to implement the groove structure 20 can be to make the middle part (the first part 21) of the rigid film 02 with uniform thickness protrude towards the display panel 01 relative to the edge part (the third part 23), then a groove structure 20 with an opening facing away from the display panel 01 is formed. Among them, along the first direction Y, the thickness of the first part 21 is the same as the thickness of the third part 23.

[0075] In this embodiment, as Figure 7 and Figure 8 shown, at least part of the sensor device 03 is disposed in the groove structure 20, and the sensor device 03 is attached to the first part 21 in the groove structure 20.

[0076] Along the first direction Y, the depth of the groove structure 20 is between 5 μm and 500 μm, that is, the distance between the surface of the first part 21 away from the display panel 01 and the surface of the third part 23 away from the display panel 01 in the first direction Y is between 5 μm and 500 μm. For example, the depth of the groove structure 20 is 100 μm - 200 μm.

[0077] Figure 9 It is a schematic diagram of a rigid film and a sensor device in a display module provided by an embodiment of the present application.

[0078] In an embodiment of the present application, as Figure 9As shown, the thickness of the hard film 02 in the direction perpendicular to the plane where the display module is located is d1. Among them, the thickness of the hard film 02 can be less than the thickness of the composite layer 04. In addition, along the second direction X, the distance between the inner side wall of the groove structure 20 facing the sensor device 03 and the same-side side wall of the sensor device 03 facing the groove structure 20 is d2, that is, in the sensor device 03 and the groove structure 20, the minimum distance between the opposite side walls of the two is d2.

[0079] Among them, d2≥3d1, that is, the minimum distance between the opposite side walls of the sensor device 03 and the groove structure 20 is at least 3 times the thickness of the hard film 02. Through multiple experimental verifications, the inventor found that when the hard film 02 is bent to form the groove structure 20, the flatness difference of the bottom of the groove structure 20 at different positions is relatively large. Along the second direction X, the flatness at the position where the distance from the bottom of the groove structure 20 to its inner side wall is greater than or equal to 3 times the thickness of the hard film 02 can meet the fitting requirements. Meeting the fitting requirements specifically means ensuring the fitting yield rate between the sensor device 03 and the hard film 02; and when the sensor device 03 is an optical sensor device 03, the acquisition of optical signals will not be affected by the poor flatness of the hard film 02.

[0080] In an embodiment of the present application, as Figure 1 、 Figures 5 - 9 shown, the sensor device 03 is attached to the first part 21 through the third adhesive film 08, that is, the sensor device 03 is attached to the bottom of the groove structure 20 through the third adhesive film 08.

[0081] In a technical solution corresponding to this embodiment, as Figure 1 、 Figures 5 - 9 shown, the orthographic projection of the third adhesive film 08 on the plane where the display panel 01 is located covers the orthographic projection of the sensor device 03 on the plane where the display panel 01 is located, that is, the orthographic projection of the third adhesive film 08 along the first direction Y covers the orthographic projection of the surface of the sensor device 01 facing the display panel 01 along the first direction Y. That is, in this technical solution, the attachment of the sensor device 03 and the hard film 02 can be a full attachment method, ensuring the firmness of the fixation of the two.

[0082] In a technical solution corresponding to this embodiment, the third adhesive film 08 can be a transparent adhesive film. In this technical solution, the sensor device 03 can be an optical sensor. For example, the sensor device 03 can specifically be an optical sensor for fingerprint recognition, an optical sensor for face recognition, etc. In addition, the sensor device 03 can also be other types of sensor devices 03 other than optical sensors.

[0083] In a technical solution corresponding to this embodiment, the third adhesive film 08 can be a film of the same material as the second adhesive film 06.

[0084] In a technical solution corresponding to this embodiment, the third adhesive film 08 may be an adhesive film made of a different material from the second adhesive film 06, and the storage modulus of the third adhesive film 08 may be less than that of the second adhesive film 06.

[0085] Figure 10 It is a partial plan view of a display module provided by an embodiment of the present application. Figure 11 is Figure 10 a schematic cross-sectional view along the M1-M2 direction in

[0086] In an embodiment of the present application, in combination with Figure 10 and Figure 11 , the display module 001 further includes a flexible circuit board 09, and the flexible circuit board 09 is electrically connected to the sensor device 03 and can transmit signals to the sensor device 03. Among them, the third part 23 of the hard film 02 includes a second opening 200, and the orthographic projection of the second opening 200 on the plane where the display panel 01 is located covers a part of the flexible circuit board 09, and this part of the flexible circuit 09 is arranged on the side of the composite layer 04 away from the display panel 01.

[0087] Specifically, after the flexible circuit board 09 extends out of the groove structure 20, it passes through the second opening 200 provided on the third part 23 of the hard film 02. Specifically, if the second opening 200 is opened in the part of the third part 23 located on the side of the composite layer 04 away from the display panel 01, then a part of the flexible circuit board 09 located outside the groove structure 20 does not need to be arranged on the side of the third part 23 away from the composite layer 04, but is arranged in the second opening 200, which is easy to make the thickness of the display module 001 thinner.

[0088] Figure 12 It is a schematic diagram of a display device provided by an embodiment of the present application.

[0089] As Figure 12 shown, the embodiment of the present application also provides a display device, including the display module 001 provided in any one of the above embodiments. Exemplarily, the display device may be an electronic device such as a mobile phone, a computer, a smart wearable device (for example, a smart watch), and an in-vehicle display device, etc., and the embodiments of the present invention do not limit this.

[0090] In the embodiment of the present application, the sensor device 03 is not directly attached to the display panel 01, but is fixed to the display panel 01 through the rigid film 02. Since the second part 22 connected to the first part 21 has a certain curvature, the deformation of the display panel 01 corresponding to the edge position of the rigid film 02 is relatively gentle, which reduces the stress concentration coefficient at any position where the display panel 01 is attached to the rigid film 02. That is, when the display panel 01 is attached to the rigid film 02 provided in the embodiment of the present application, there is no stress concentration at the edge of the contact position between the display panel 01 and the rigid film 02, and thus obvious deformation can be avoided when the display panel 01 is attached to the rigid film 02.

[0091] In addition, during the process of attaching the rigid film 02 to the display panel 01, a force needs to be applied to the surface of the first part 21 away from the display panel 01, and the edge position where the display panel 01 contacts the rigid film 02 is located in the second part 22. That is, during the process of attaching the rigid film 02 to the display panel 01, the external force received by the edge of the position where the rigid film 02 contacts the display panel 01 is small, and indentation of the display panel 01 can also be effectively avoided.

[0092] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included within the scope of protection of the present application.

Claims

1. A display module, characterized in that, it includes: a display panel; a hard film disposed on the backlight side of the display panel; the hard film includes a connected first part and a second part, and the orthographic projection of the second part on the plane where the display panel is located is located outside the orthographic projection of the first part on the plane where the display panel is located; the first part is attached to the display panel through a first adhesive film; the second part includes a first surface opposite to and facing the display panel, the curvature of the first surface is greater than 0, and the first surface is curved in a direction away from the display panel; a sensor device, and the sensor device is located on the side of the first part away from the display panel.

2. The display module according to claim 1, characterized in that, the display module includes a composite layer, and the composite layer is disposed on the backlight side of the display panel and attached to the display panel; the composite layer includes a first opening, and the orthographic projection of the first opening on the plane where the display panel is located covers the orthographic projection of the first part on the plane where the display panel is located.

3. The display module according to claim 2, characterized in that, the composite layer is attached to the display panel through the first adhesive film.

4. The display module according to claim 2, characterized in that, the composite layer is attached to the display panel through a second adhesive film, and the second adhesive film is a light-shielding adhesive film.

5. The display module according to claim 2, characterized in that, the hard film includes a third part, the third part is located on the side of the composite layer away from the display panel, and the third part is attached to the composite layer.

6. The display module according to claim 5, characterized in that, the display module further includes a flexible circuit board, and the flexible circuit board is electrically connected to the sensor device; wherein, the third part includes a second opening, the orthographic projection of the second opening on the plane where the display panel is located covers a part of the flexible circuit board, and a part of the flexible circuit board is disposed on the side of the composite layer away from the display panel.

7. The display module according to claim 1, characterized in that, the first adhesive film is a transparent adhesive film, and the sensor device is an optical sensor.

8. The display module according to claim 7, characterized in that, the hard film is a transparent film.

9. The display module according to claim 1, characterized in that, the display panel includes a flexible protective film, and the first part is attached to the flexible protective film of the display panel through the first adhesive film; the storage modulus of the first adhesive film is greater than the storage modulus of the flexible protective film and less than the storage modulus of the hard film.

10. The display module according to claim 1, characterized in that, a groove structure is provided on the side of the hard film away from the display panel; at least part of the sensor device is disposed in the groove structure.

11. The display module according to claim 10, characterized in that, In a direction perpendicular to the plane of the display module, the thickness of the hard film is d1; in a direction parallel to the plane of the display module, the distance between the inner sidewall of the groove structure facing the sensor device and the same-side sidewall of the sensor device facing the groove structure is d2, and d2 ≥ 3d1.

12. The display module according to claim 10, wherein, in a direction perpendicular to the plane of the display module, the depth of the groove structure is 5 μm - 500 μm.

13. The display module according to claim 1, wherein, the sensor device is attached to the first part through a third adhesive film; the orthographic projection of the third adhesive film on the plane of the display panel covers the orthographic projection of the sensor device on the plane of the display panel.

14. A display device, wherein, comprises a display module according to any one of claims 1 - 13.

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