Display module and display device

By setting light-sensitive through holes and light-transmitting gaskets in the fingerprint recognition area of ​​the display module, and using the multi-layer septum layer structure to absorb and dissipate impact energy, the problem of insufficient impact resistance in the fingerprint hole area in the prior art is solved, and a higher display panel reliability is achieved.

CN119987061AActive Publication Date: 2025-05-13WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202510065573.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-01-15
Publication Date
2025-05-13
Estimated Expiration
2045-01-15

AI Technical Summary

Technical Problem

The existing under-screen fingerprint recognition technology has poor impact resistance at the fingerprint hole area, which leads to black spots and failure when the screen is impacted.

Method used

A display module is designed, including a display panel, a support layer, a buffer layer and a light-transmitting gasket. The buffer layer is provided with a photosensitive through hole in the fingerprint recognition area. The translucent gasket consists of a first diaphragm layer and a second diaphragm layer. The elastic modulus of the second diaphragm layer is greater than that of the first diaphragm layer, and jointly supports the display panel and absorbs and dissipates impact energy.

Benefits of technology

The impact resistance of the display panel in the fingerprint recognition area is improved, the dark spots caused by impact are avoided, and the reliability of the display module is improved.

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Abstract

The invention relates to a display module and a display device. The display module comprises a display panel, a supporting layer, a buffer layer and a light-transmitting gasket. The display panel comprises a display side and a back side which are oppositely arranged, and the display panel is provided with a display area and a fingerprint identification area located in the display area on the display side of the display panel; the supporting layer is arranged on the back side of the display panel; the buffer layer is arranged on the side, away from the display panel, of the supporting layer, and a photosensitive through hole is formed in the position, corresponding to the fingerprint recognition area, of the buffer layer; the light-transmitting gasket is arranged in the photosensitive through hole; the light-transmitting gasket comprises a first shock insulator layer and a second shock insulator layer, the second shock insulator layer is located on one side of the supporting layer, the first shock insulator layer is arranged between the second shock insulator layer and the supporting layer, and the elastic modulus of the second shock insulator layer is larger than that of the first shock insulator layer.
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Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display module and a display device. Background Art

[0002] In recent years, full-screen, ultra-thin and narrow-framed mobile phone screens have been favored by consumers. Under-screen fingerprint technology has gradually led the market because it can effectively increase the screen-to-body ratio, reduce weight and provide good interactive functions. At present, the commonly used under-screen fingerprint technology is optical fingerprint recognition technology. Its mechanism is that the finger presses the fingerprint hole area, and the light passes through the texture of the fingerprint (ridges and valleys), reflecting light of different brightness levels, which is received by the sensor under the screen to identify the fingerprint. Since this technology senses the signal through light sensing, a composite buffer material (Supercomposite film) will not be set at the position corresponding to the fingerprint hole area. Although this can make the fingerprint hole area have excellent optical properties (high transmittance), it will greatly reduce the impact resistance of the screen body at the fingerprint hole area. When the screen is impacted, it is easy to be squeezed at the position corresponding to the fingerprint hole to produce black spots and fail. Summary of the invention

[0003] The embodiments of the present application provide a display module and a display device, which solve the problem that the display module has poor impact resistance in the fingerprint hole area.

[0004] In order to achieve the above object, according to a first aspect of the present application, a display module is provided, comprising:

[0005] A display panel, the display panel comprising a display side and a back side arranged opposite to each other, wherein on the display side of the display panel, the display panel has a display area and a fingerprint recognition area located in the display area;

[0006] A supporting layer, the supporting layer being disposed on the back side of the display panel;

[0007] a buffer layer, the buffer layer being disposed on a side of the support layer away from the display panel, the buffer layer being provided with a photosensitive through hole at a position corresponding to the fingerprint recognition area; and

[0008] A light-transmitting gasket, the light-transmitting gasket is arranged in the light-sensitive through hole;

[0009] The light-transmitting gasket includes a first spacer layer and a second spacer layer, the second spacer layer is located on one side of the supporting layer, the first spacer layer is arranged between the second spacer layer and the supporting layer, and the elastic modulus of the second spacer layer is greater than that of the first spacer layer.

[0010] In one embodiment, the second spacer layer is configured as a single film layer structure;

[0011] The ratio of the elastic modulus E2 of the second spacer layer to the elastic modulus E1 of the first spacer layer is set to

[0012] Wherein, the elastic modulus E1 of the first spacer layer is set to 10 KPa to 500 KPa.

[0013] In one embodiment, the material of the second spacer layer includes one of foam, silicone gel and non-Newtonian fluid cushioning material.

[0014] In one embodiment, the second spacer layer is configured as a single film layer structure;

[0015] The ratio of the elastic modulus E2 of the second spacer layer to the elastic modulus E1 of the first spacer layer is set to

[0016] Wherein, the elastic modulus E1 of the first spacer layer is set to 10 KPa to 500 KPa.

[0017] In one embodiment, the second spacer layer is configured as a single film layer structure;

[0018] In the thickness direction of the display module, the ratio of the thickness T2 of the second spacer layer to the thickness T1 of the first spacer layer is set to

[0019] In one embodiment, the second spacer layer includes a first sublayer, a second sublayer and a first adhesive layer, the first sublayer is arranged on a side of the first spacer layer away from the support layer, the second sublayer is arranged on a side of the first sublayer away from the first spacer layer, and the first adhesive layer is sandwiched between the first sublayer and the second sublayer, and adheres the first sublayer and the second sublayer;

[0020] The elastic modulus of the first sublayer is different from the elastic modulus of the second sublayer, and both the elastic modulus of the first sublayer and the elastic modulus of the second sublayer are greater than the elastic modulus of the first spacer layer.

[0021] In one embodiment, the elastic modulus of the first sub-layer is smaller than the elastic modulus of the second sub-layer.

[0022] In one embodiment, the first spacer layer is configured as a second adhesive layer, and the first spacer layer adheres the second spacer layer and the support layer.

[0023] In one embodiment, the thickness of the light-transmitting gasket is less than or equal to the depth of the photosensitive through hole.

[0024] According to a second aspect of the present application, a display device is provided, comprising the above-mentioned display module.

[0025] In the display module of the embodiment of the present application, a support layer is arranged on the back side of the display panel; a buffer layer is arranged on the side of the support layer away from the display panel; usually, a photosensitive element for optical fingerprint recognition is arranged in the fingerprint recognition area of ​​the display panel, and a photosensitive through hole is arranged on the buffer layer at a position corresponding to the fingerprint recognition area, so as to improve the light transmittance at the fingerprint recognition area; at the same time, a light-transmitting gasket is arranged in the light-sensitive through hole, and when the display module is impacted, the light-transmitting gasket can support the layer and the display panel to avoid a large deformation of the display panel at the position corresponding to the light-sensitive through hole; and the light-transmitting gasket includes a first spacer layer arranged in a stacked manner and a second spacer layer, the first spacer layer is arranged close to the supporting layer, the elastic modulus of the second spacer layer is greater than that of the first spacer layer, when the display module is impacted, the first spacer layer can produce a larger deformation due to its smaller elastic modulus, thereby dissipating the impact energy through deformation and reducing resonance, the second spacer layer has higher hardness and yield strength due to its larger elastic modulus, on the basis of providing support for the first spacer layer, it can also consume a large amount of impact energy through its own deformation, thereby improving the impact resistance of the display panel at the position corresponding to the photosensitive through hole, and then improving the reliability of the display module.

[0026] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.

[0028] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings, wherein the same figure numbers represent the same parts in the following description.

[0029] Figure 1 A schematic diagram of a first film layer of a display module provided in an embodiment of the present application;

[0030] Figure 2 A schematic diagram of a second film layer of a display module provided in an embodiment of the present application;

[0031] Figure 3 A schematic diagram of a third film layer of a display module provided in an embodiment of the present application;

[0032] Figure 4A schematic plan view of a display panel provided in an embodiment of the present application. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0034] The embodiments of the present application provide a display module 100 and a display device 1000. They are described in detail below. It should be noted that the description order of the following embodiments is not intended to limit the preferred order of the embodiments.

[0035] In the first aspect, an embodiment of the present application provides a display module 100, wherein the display module 100 includes a display panel 1, a supporting layer 2 and a buffer layer 3, wherein the display panel 1 includes a display side 11 and a back side 12 that are arranged opposite to each other, wherein on the display side 11 of the display panel 1, the display panel 1 has a display area A and a fingerprint recognition area B located within the display area A; the supporting layer 2 is arranged on the back side 12 of the display panel 1; the buffer layer 3 is arranged on a side of the supporting layer 2 that is away from the display panel 1, and the buffer layer 3 is provided with a photosensitive through hole 31 at a position corresponding to the fingerprint recognition area B.

[0036] The present application does not specifically limit the type of the display panel 1. The display panel 1 can be of various types such as an OLED display panel, a quantum dot display panel, a liquid crystal display panel, etc. The display panel 1 can be rigid or flexible.

[0037] Typically, a photosensitive element is disposed at the fingerprint recognition area B of the display panel 1, and the photosensitive element is used for optical fingerprint recognition. When a user performs fingerprint recognition, light passes through the texture (ridges and valleys) of the fingerprint, reflects light of different brightness levels, and is received by the sensor under the display panel 1, thereby recognizing the fingerprint.

[0038] The present application does not impose any specific restrictions on the form of the support layer 2. The support layer 2 is used to provide rigid support to the display panel 1 to prevent the display panel 1 from being damaged in subsequent processes due to lack of rigidity. The support layer 2 can be a single-layer structure or a laminated structure. The support layer 2 in the example is a single-layer structure. In addition, the material of the support layer 2 is a light-transmitting material with a light transmittance greater than or equal to 90%. For example, the material of the support layer 2 is COP (full name in English: CycloOlefin Polymer, Chinese abbreviation: cycloolefin copolymer) or acrylic; therefore, the support layer 2 can be set to a continuous and uninterrupted structure, that is, the support layer 2 is not provided with a through hole that runs through the entire support layer 2, so that the support layer 2 has no hollowed-out area, thereby improving the support stability of the support layer 2 at various locations.

[0039] The present application does not impose any specific restrictions on the form of the buffer layer 3. Preferably, the buffer layer 3 is configured as an SCF layer (English full name: Super Clean Foam, Chinese abbreviation: heat dissipation buffer layer 3), and the SCF layer has buffering and heat dissipation functions. The SCF layer can be a common structural composition in the art. For example, the SCF layer includes an adhesive layer, a foam layer, an organic material layer, and a metal layer arranged in sequence, wherein the adhesive layer is close to the support layer 2 and adheres to the support layer 2, and the material example of the adhesive layer is mesh glue (Embo); the foam layer has the function of shading and buffering, and the material example of the foam layer is foam; the organic material layer plays a reinforcing role to improve the reliability of the SCF layer, and the material example of the organic material layer is polyimide; the metal layer plays a heat dissipation role, and the material example of the metal layer is copper foil.

[0040] It can be known that since the buffer layer 3 is a composite material and is not light-transmissive, a photosensitive through hole 31 needs to be provided on the buffer layer 3 at the position corresponding to the fingerprint recognition area B to increase the light transmittance at the fingerprint recognition area B, thereby improving the fingerprint recognition sensitivity.

[0041] Although the provision of the photosensitive through hole 31 can improve the light transmittance at the fingerprint identification area B, it will greatly reduce the impact resistance of the screen at the fingerprint hole area. By providing the light-transmitting gasket 4 in the photosensitive through hole 31, when the display module 100 is impacted, the light-transmitting gasket 4 can support the support layer 2 and the display panel 1, and prevent the display panel 1 from being greatly deformed at the position corresponding to the photosensitive through hole 31, thereby improving the impact resistance of the display panel 1 at the position corresponding to the photosensitive through hole 31, and preventing the display panel 1 from generating black spots at the position corresponding to the photosensitive through hole 31 due to extrusion.

[0042] In addition, the light-transmitting gasket 4 includes a first spacer layer 41 and a second spacer layer 42 which are stacked. The first spacer layer 41 is arranged close to the supporting layer 2. The elastic modulus of the second spacer layer 42 is greater than that of the first spacer layer 41. When the display module 100 is impacted, the first spacer layer 41 can produce a larger deformation due to its smaller elastic modulus, thereby dissipating the impact energy through deformation and reducing resonance. The second spacer layer 42 has a higher hardness and yield strength due to its larger elastic modulus. On the basis of providing support for the first spacer layer 41, it can also consume a large amount of impact energy through its own deformation, thereby improving the impact resistance of the display panel 1 at the position corresponding to the photosensitive through hole 31, and further improving the reliability of the display module 100.

[0043] The present application does not impose any specific restrictions on the structure of the second spacer layer 42. The second spacer layer 42 can be configured as a single-layer structure or a multi-layer structure.

[0044] See also Figure 1 In the first embodiment of the present application, the second spacer layer 42 is set to a single film layer structure; the ratio of the elastic modulus E2 of the second spacer layer 42 to the elastic modulus E1 of the first spacer layer 41 is set to

[0045] See also Figure 2 In the second embodiment of the present application, the second spacer layer 42 is set to a single film layer structure; the ratio of the elastic modulus E2 of the second spacer layer 42 to the elastic modulus E1 of the first spacer layer 41 is set to

[0046] In the first and second embodiments of the present application, the second spacer layer 42 is set to a single film layer structure; the elastic modulus E1 of the first spacer layer is set to 10KPa~500KPa; the elastic modulus E1 of the first spacer layer 41 is much smaller than the elastic modulus E2 of the second spacer layer 42. When the display module 100 is impacted, the first spacer layer 41 can produce a larger deformation due to its smaller elastic modulus, thereby dissipating the impact energy through deformation and reducing resonance.

[0047] Compared with the second embodiment, in the first embodiment of the present application, the elastic modulus E2 of the second spacer layer 42 is smaller. When the display module 100 is impacted, the second spacer layer 42 can increase the bearing area of ​​the impact kinetic energy due to its deformation, and convert the point impact into a surface impact, thereby dissipating the impact kinetic energy and playing a buffering and vibration reduction role, thereby improving the impact resistance of the display panel 1 at the position corresponding to the photosensitive through hole 31, and further improving the reliability of the display module 100.

[0048] In the second embodiment of the present application, the elastic modulus E2 of the second spacer layer 42 is relatively large, so that it has a higher hardness and yield strength. On the basis of providing better support for the first spacer layer 41, it can also consume a large amount of impact energy through its own deformation, thereby improving the impact resistance of the display panel 1 at the position corresponding to the photosensitive through hole 31, and further improving the reliability of the display module 100.

[0049] In the first embodiment, the present application does not specifically limit the elastic modulus E2 of the second spacer layer 42. Preferably, the elastic modulus E2 of the second spacer layer 42 is set to 1 GPa to 10 GPa. The material of the second spacer layer 42 includes one of foam, silicone gel and non-Newtonian fluid buffer material.

[0050] In the second embodiment, the present application does not impose any specific restrictions on the elastic modulus E2 of the second spacer layer 42. Preferably, the elastic modulus E2 of the second spacer layer 42 is set to 10GPa to 200GPa. The material of the second spacer layer 42 includes one of PMMA (polymethyl methacrylate), PC (polycarbonate), COP (cyclic olefin copolymer), borosilicate glass and a transparent composite material. In this way, the second spacer layer 42 not only has a high hardness and yield strength, but also has a light transmittance greater than or equal to 90%.

[0051] Meanwhile, by adjusting the thickness of the first spacer layer 41 and the second spacer layer 42 , the rigidity and mechanical properties of the first spacer layer 41 and the second spacer layer 42 are adjusted.

[0052] The present application does not impose any specific restrictions on the thickness of the first spacer layer 41. The thickness T1 of the first spacer layer 41 is set to 0 μm to 50 μm; based on the above-mentioned limitation on the elastic modulus of the first spacer layer 41, the first spacer layer 41 can be configured as an adhesive layer 423, in which case the second spacer layer 42 is adhered to the support layer 2 through the first spacer layer 41; as an adhesive layer 423, the thickness T1 of the first spacer layer 41 is generally set to 20 μm.

[0053] The present application does not impose any specific restrictions on the thickness of the second spacer layer 42. The thickness T2 of the second spacer layer 42 is set to 0 μm to 200 μm. In order to ensure the rigidity of the second spacer layer 42, the thickness T2 of the second spacer layer 42 is greater than the thickness T1 of the first spacer layer 41; usually, the thickness of the buffer layer 3 is set to 200 μm to 220 μm, so when the thickness T2 of the second spacer layer 42 is set to 200 μm, the total thickness of the light-transmitting gasket 4 is the same as the depth of the photosensitive through hole 31.

[0054] As described above, in the thickness direction of the display module 100, the ratio of the thickness T2 of the second spacer layer 42 to the thickness T1 of the first spacer layer 41 is set to

[0055] See also Figure 3 In the third embodiment of the present application, the second spacer layer 42 includes a first sublayer 421, a second sublayer 422 and an adhesive layer 423, the first sublayer 421 is arranged on the side of the first spacer layer 41 away from the support layer 2, the second sublayer 422 is arranged on the side of the first sublayer 421 away from the first spacer layer 41, the first adhesive layer is sandwiched between the first sublayer 421 and the second sublayer 422, and adheres the first sublayer 421 and the second sublayer 422; wherein the elastic modulus of the first sublayer 421 is different from the elastic modulus of the second sublayer 422, and the elastic modulus of the first sublayer 421 and the elastic modulus of the second sublayer 422 are both greater than the elastic modulus of the first spacer layer 41.

[0056] In the third embodiment, the second spacer layer 42 is configured as a multi-layer structure, the elastic modulus of the first sub-layer 421 is different from the elastic modulus of the second sub-layer 422, and the first sub-layer 421 and the second sub-layer 422 are adhered by the first adhesive layer. When the display module 100 is impacted, the first spacer layer 41 can produce a large deformation due to its small elastic modulus, thereby dissipating the impact energy and reducing the resonance through deformation; after the impact energy is transmitted to the second spacer layer 42, it passes through the first sub-layer 421, the first adhesive layer and the second sub-layer 422 in sequence, which can further consume a large amount of impact energy, thereby improving the impact resistance of the display panel 1 at the position corresponding to the photosensitive through hole 31, and further improving the reliability of the display module 100.

[0057] The present application does not impose any specific restrictions on the relationship between the elastic modulus of the first sublayer 421 and the second sublayer 422. In one embodiment, the elastic modulus of the first sublayer 421 is greater than the elastic modulus of the second sublayer 422; when the display module 100 is impacted, the first spacer layer 41 can produce a large deformation due to its smaller elastic modulus, thereby dissipating the impact energy through deformation and reducing resonance; the first sublayer 421 with a larger elastic modulus has a higher hardness and yield strength, and on the basis of providing support for the first spacer layer 41, it can also consume a large amount of impact energy through its own deformation. At the same time, the second sublayer 422 has a smaller elastic modulus, and when receiving the impact force transmitted from the first sublayer 421, it can absorb the impact energy through its own deformation. On the one hand, it can decompose the stress of the display panel 1 at the photosensitive through hole 31; on the other hand, it can prevent the transparent gasket 4 from breaking due to the excessive overall elastic modulus.

[0058] In another embodiment, the elastic modulus of the first sub-layer 421 is smaller than the elastic modulus of the second sub-layer 422; when the display module 100 is impacted, the first spacer layer 41 can produce a larger deformation due to its smaller elastic modulus, thereby dissipating the impact energy through deformation and reducing resonance; the first sub-layer 421 with a smaller elastic modulus can consume the impact energy through its own larger deformation; the first adhesive layer between the first sub-layer 421 and the second sub-layer 422 can play a role in buffering and reducing resonance; at the same time, the second sub-layer 422 has a larger elastic modulus, higher hardness and yield strength, and on the basis of providing support for the first spacer layer 41 and the first sub-layer 421, it can also consume a large amount of impact energy through its own deformation; thereby improving the impact resistance of the display panel 1 at the position corresponding to the photosensitive through hole 31.

[0059] The present application does not impose any specific limitation on the elastic modulus of the first sub-layer 421 , the first adhesive layer, and the second sub-layer 422 .

[0060] Taking "the elastic modulus of the first sublayer 421 is smaller than the elastic modulus of the second sublayer 422" as an example, the elastic modulus of the first sublayer 421 is set to 1GPa~10GPa; the elastic modulus of the second sublayer 422 is set to 10GPa~200GPa; the elastic modulus of the first adhesive layer is set to 10KPa~500KPa, and the elastic modulus of the first adhesive layer may be the same as or different from the elastic modulus of the first gasket layer 41.

[0061] Similarly, the present application does not impose any specific restrictions on the thickness of the first sublayer 421, the first adhesive layer, and the second sublayer 422. The thickness of the first sublayer 421 is set to 0-200 μm; the thickness of the second sublayer 422 is set to 0-200 μm; the thickness of the first sublayer 421 and the second sublayer 422 can be the same or different; the thickness of the first adhesive layer is set to 0 μm-50 μm, and the thickness of the first adhesive layer and the first spacer layer 41 can be the same or different. Following the above embodiment "the first spacer layer 41 is configured as an adhesive layer 423, and adheres the second spacer layer 42 and the support layer 2", the first spacer layer 41 can have the same thickness and elastic modulus as the first adhesive layer.

[0062] Following the above embodiment, the first spacer layer 41 is configured as a second adhesive layer, and the first spacer layer 41 adheres the second spacer layer 42 and the support layer 2 .

[0063] The present application does not impose any specific restrictions on the thickness of the light-transmitting gasket 4. The thickness of the light-transmitting gasket 4 is less than or equal to the depth of the photosensitive through hole 31. In other words, the light-transmitting gasket 4 does not exceed the periphery of the photosensitive through hole 31, so as not to affect the overall structure of the display module 100.

[0064] In an embodiment of the present application, the display module 100 also includes a polarizer 5, an optical adhesive layer 6 and a cover plate 7. The polarizer 5 is arranged on the display side 11 of the display panel 1, and the cover plate 7 is arranged on the side of the polarizer 5 away from the display panel 1. The optical adhesive layer 6 is arranged between the polarizer 5 and the cover plate 7, and adheres the polarizer 5 and the cover plate 7.

[0065] In a second aspect, an embodiment of the present application provides a display device 1000. The display device 1000 includes a display module 100. It should be noted that the display module 100 is configured as the above-mentioned display module 100, that is, the display module 100 includes all the technical features of the above-mentioned display module 100, and the display device 1000 includes all the embodiments of the above-mentioned display module 100, and also has all the technical effects of the above-mentioned embodiments, which will not be described one by one here.

[0066] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0067] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0068] The embodiments, implementation methods and related technical features of the present application can be combined and replaced with each other without conflict.

[0069] The above are only preferred embodiments of the present application and do not constitute any form of limitation to the present application. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application are still within the scope of the technical solution of the present application.

Claims

1. A display module, characterized in that: include: A display panel, the display panel comprising a display side and a back side arranged opposite to each other, the display panel having a display area and a fingerprint recognition area located in the display area; A supporting layer, the supporting layer being disposed on the back side of the display panel; a buffer layer, the buffer layer being disposed on a side of the support layer away from the display panel, the buffer layer being provided with a photosensitive through hole at a position corresponding to the fingerprint recognition area; and A light-transmitting gasket, the light-transmitting gasket is arranged in the light-sensitive through hole; The light-transmitting gasket includes a first spacer layer and a second spacer layer, the second spacer layer is located on one side of the supporting layer, the first spacer layer is arranged between the second spacer layer and the supporting layer, and the elastic modulus of the second spacer layer is greater than that of the first spacer layer.

2. The display module according to claim 1, wherein: The second spacer layer is configured as a single film layer structure; The ratio of the elastic modulus E2 of the second spacer layer to the elastic modulus E1 of the first spacer layer is set to Wherein, the elastic modulus E1 of the first spacer layer is set to 10 KPa to 500 KPa.

3. The display module according to claim 2, wherein: The material of the second spacer layer includes one of foam, silicone gel and non-Newtonian fluid buffer material.

4. The display module according to claim 1, wherein: The second spacer layer is configured as a single film layer structure; The ratio of the elastic modulus E2 of the second spacer layer to the elastic modulus E1 of the first spacer layer is set to Wherein, the elastic modulus E1 of the first spacer layer is set to 10 KPa to 500 KPa.

5. The display module according to claim 1, wherein: The second spacer layer is configured as a single film layer structure; In the thickness direction of the display module, the ratio of the thickness T2 of the second spacer layer to the thickness T1 of the first spacer layer is set to 6. The display module according to claim 1, wherein: The second spacer layer includes a first sublayer, a second sublayer and a first adhesive layer, wherein the first sublayer is arranged on a side of the first spacer layer away from the support layer, the second sublayer is arranged on a side of the first sublayer away from the first spacer layer, and the first adhesive layer is sandwiched between the first sublayer and the second sublayer and adheres the first sublayer and the second sublayer; The elastic modulus of the first sublayer is different from the elastic modulus of the second sublayer, and both the elastic modulus of the first sublayer and the elastic modulus of the second sublayer are greater than the elastic modulus of the first spacer layer.

7. The display module according to claim 6, wherein: The elastic modulus of the first sub-layer is smaller than the elastic modulus of the second sub-layer.

8. The display module according to any one of claims 2 to 7, characterized in that: The first spacer layer is configured as a second adhesive layer, and the first spacer layer adheres the second spacer layer and the supporting layer.

9. The display module according to claim 1, wherein: The thickness of the light-transmitting gasket is less than or equal to the depth of the photosensitive through hole.

10. A display device, characterized in that: Comprising a display module as described in any one of claims 1-9.

Citation Information

Patent Citations

  • Fingerprint identifying device and electronic device

    CN110114779A

  • Fingerprint recognition device and electronic device

    CN110770750A

  • Flexible display assembly and flexible display device

    CN111640770A

  • Display module and display device

    CN117396800A

  • Adhesive layer, optical film and image display device

    JP2012237965A