Display module and display device

Abstract

The present invention discloses a display module and a display device. The display module includes a conventional display area and a functional display area adjacent to the conventional display area; the display module further includes a display panel, a backplane, and a buffer layer; the backplane is disposed on one side of the display panel; the buffer layer is disposed on the side of the backplane away from the display panel, and an opening located in the functional display area is provided in the buffer layer; wherein, a concavo-convex structure located in the conventional display area is provided between the backplane and the buffer layer, and the concavo-convex structure includes a plurality of isolation grooves spaced apart between the backplane and the buffer layer, and the backplane and the buffer layer are spaced apart at the isolation grooves. By providing a plurality of isolation grooves spaced apart in the conventional display area in the present invention, the backplane and the buffer layer are isolated at the isolation grooves to form a hollow structure, so that the light propagation interfaces at the isolation grooves and the openings are the same, reducing the difference in reflected light intensity between the functional display area and the conventional display area and improving the display unevenness phenomenon of the display module.

Description

Technical Field

[0001] The present invention relates to the field of display technologies, and particularly to a display module and a display device having the display module. Background Art

[0002] Organic Light-Emitting Diode (OLED) display panels have gradually become the mainstream technology in the display field due to their unique advantages such as low power consumption, high saturation, fast response time, and wide viewing angle, and have broad application prospects in future automotive, mobile phone, tablet, computer, and television products.

[0003] Currently, in order to protect the OLED display panel, a foam is often attached to the backplane of the OLED display panel for protection. Since sensing components such as a collimating device need to be placed under the OLED display panel, openings need to be made in the foam to improve the sensing effect.

[0004] However, since the light emitted by the OLED light-emitting layer is easily reflected by the upper metal and irradiates onto the backplane and the foam, and the refractive index of the foam is relatively large, and the light is prone to total reflection from the backplane to the opening, the reflected light intensity at the opening is greater than that in other regions, resulting in a greater change in the transistor characteristics corresponding to the opening than in other positions, which easily leads to uneven display. Summary of the Invention

[0005] Embodiments of the present invention provide a display module and a display device, which can reduce the difference in reflected light intensity between the functional display area and the conventional display area and improve the uneven display phenomenon of the display module.

[0006] Embodiments of the present invention provide a display module, the display module includes a conventional display area and a functional display area adjacent to the conventional display area;

[0007] The display module further includes:

[0008] a display panel;

[0009] a backplane disposed on one side of the display panel;

[0010] a buffer layer disposed on the side of the backplane away from the display panel, and an opening located in the functional display area is provided in the buffer layer;

[0011] Wherein, a concavo-convex structure located in the conventional display area is provided between the backplane and the buffer layer, the concavo-convex structure includes a plurality of isolation grooves spaced apart between the backplane and the buffer layer, and the backplane and the buffer layer are spaced apart at the isolation grooves.

[0012] In an embodiment of the present invention, the concavo-convex structure further includes a plurality of convex portions disposed between the backplane and the buffer layer, and each of the convex portions is located between two adjacent isolation grooves.

[0013] In an embodiment of the present invention, the plurality of convex portions are arranged in an array and are spaced apart from each other in the normal display area, and the plurality of isolation grooves are arranged in an array and are spaced apart from each other in the normal display area.

[0014] In an embodiment of the present invention, the plurality of isolation grooves are connected and arranged in a spiral shape around the functional display area, the plurality of convex portions are connected and arranged in a spiral shape around the functional display area, and along the direction away from the functional display area, the isolation grooves and the convex portions are alternately arranged.

[0015] In an embodiment of the present invention, the plurality of convex portions are disposed on the buffer layer and are located on the side of the buffer layer close to the backplane, and one end of each convex portion away from the buffer layer is connected to the backplane.

[0016] In an embodiment of the present invention, the connection area between the plurality of convex portions and the backplane is smaller than the orthographic projection area of the plurality of isolation grooves on the backplane.

[0017] In an embodiment of the present invention, the plurality of convex portions are disposed on the backplane and are located on the side of the backplane close to the buffer layer, and one end of each convex portion away from the backplane is connected to the buffer layer.

[0018] In an embodiment of the present invention, one end of each convex portion close to the buffer layer is flush with the surface of the backplane on the side close to the buffer layer and located in the functional display area.

[0019] In an embodiment of the present invention, the display module further includes a sensing component, and the sensing component is disposed on the side of the buffer layer away from the backplane corresponding to the opening.

[0020] According to the above object of the present invention, a display device is provided, and the display device includes the display module.

[0021] Advantages of the present invention: By providing a concavo-convex structure in the normal display area in the present invention, and the concavo-convex structure includes a plurality of isolation grooves distributed at intervals, the backplane and the buffer layer are isolated at the isolation grooves to form a hollow structure, so that the light propagation interfaces at the isolation grooves and the openings are the same, that is, the backplane is in contact with air, reducing the difference in reflected light intensity between the functional display area and the normal display area and improving the display unevenness of the display module. Description of the Drawings

[0022] The following will, with reference to the accompanying drawings and through a detailed description of specific embodiments of the present invention, make the technical solutions and other beneficial effects of the present invention obvious.

[0023] Figure 1 It is a schematic structural diagram of a display module in the related art;

[0024] Figure 2 It is a schematic structural diagram of a display module provided by an embodiment of the present invention;

[0025] Figure 3 It is a schematic structural diagram of another display module provided by an embodiment of the present invention;

[0026] Figure 4 It is a schematic structural diagram of another display module provided by an embodiment of the present invention;

[0027] Figure 5 It is a schematic structural diagram of another display module provided by an embodiment of the present invention. Specific Embodiments

[0028] The following will, with reference to the accompanying drawings in the embodiments of the present invention, clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only a part rather than all of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts fall within the scope of protection of the present invention.

[0029] The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numerals and / or reference letters in different examples. This repetition is for the purpose of simplification and clarity and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides examples of various specific processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0030] Please refer to Figure 1, in the related art, a display module includes a panel main body 1, a backplane 2 disposed on the back side of the panel main body 1, and a buffer member 3. The display module further includes a collimating device disposed on the side of the buffer member 3 facing away from the backplane 2. To improve the sensing effect of the collimating device, through holes 4 are often provided in the buffer member 3 corresponding to the collimating device. Among them, the light A emitted by the light-emitting pixel 5 reaches the backplane 2 and the buffer member 3 after being reflected by the touch metal 6. Since there is air in the through hole 4 and its refractive index is close to 1, total reflection is likely to occur, resulting in a stronger emission light intensity at the through hole 4 than at other positions. This causes the characteristic change range of the transistor device 7 corresponding to the through hole 4 to be greater than that of the transistor devices at other positions. As a result, during the display process, uneven display is likely to occur at the through hole 4.

[0031] An embodiment of the present invention provides a display module. Please refer to Figure 2 , the display module includes a conventional display area 101 and a function display area 102, and the conventional display area 101 and the function display area 102 are adjacent to each other.

[0032] The display module further includes a display panel 10, a backplane 20, and a buffer layer 30. Among them, the backplane 20 is disposed on one side of the display panel 10; the buffer layer 30 is disposed on the side of the backplane 20 away from the display panel 10, and an opening 31 located in the function display area 102 is provided in the buffer layer 30.

[0033] Furthermore, a concavo-convex structure 40 located in the conventional display area 101 is provided between the backplane 20 and the buffer layer 30. The concavo-convex structure 40 includes a plurality of isolation grooves 41 spaced apart between the backplane 20 and the buffer layer 30, and the backplane 20 and the buffer layer 30 are spaced apart at the isolation grooves 41.

[0034] During the implementation and application process, compared with the related art, in the embodiment of the present invention, by providing the concavo-convex structure 40 in the conventional display area 101, and the concavo-convex structure 40 includes a plurality of isolation grooves 41 distributed at intervals, the backplane 20 and the buffer layer 30 are isolated at the isolation grooves 41 to form a hollow structure. As a result, the same light propagation interface is formed at the isolation grooves 41 and the opening 31, that is, the backplane is in contact with air, reducing the difference in the reflected light intensity between the function display area 102 and the conventional display area 101, and improving the uneven display phenomenon of the display module.

[0035] Specifically, in an embodiment of the present invention, please refer to Figure 2 , the display module includes a conventional display area 101 and a function display area 102 adjacent to the conventional display area 101.

[0036] Furthermore, the display module further includes a display panel 10, a backplane 20, and a buffer layer 30, and the backplane 20 is disposed on the side of the display panel 10 facing away from the light-emitting side, and the buffer layer 30 is disposed on the side of the backplane 20 away from the display panel 10.

[0037] Among them, the display panel 10 includes a substrate 11, a thin film transistor array layer 12 disposed on the substrate 11, a light-emitting functional layer 13 disposed on the thin film transistor array layer 12, and a touch layer 14 disposed on the light-emitting functional layer 13; the substrate 11 may include a stacked flexible sub-layer and a water and oxygen barrier sub-layer, and the number of the flexible sub-layer and the water and oxygen barrier sub-layer is not limited. For example, in this embodiment, the substrate 11 sequentially includes a first flexible sub-layer, a first water and oxygen barrier sub-layer, a second flexible sub-layer, and a second water and oxygen barrier sub-layer from bottom to top; the thin film transistor array layer 12 includes a plurality of thin film transistors 121 disposed on the substrate 11 and an insulating layer covering the thin film transistors 121; the light-emitting functional layer 13 includes a plurality of light-emitting portions 131, and each light-emitting portion 131 includes an anode, a light-emitting layer, and a cathode stacked thereon, wherein the anode can be electrically connected to a corresponding thin film transistor 131 to transmit a display signal and realize the light-emitting function of each light-emitting portion 131; the touch layer 14 is disposed on the light-emitting functional layer 13, and an encapsulation layer and an insulating layer may be included between the touch layer 14 and the light-emitting functional layer 13. The touch layer 14 includes a touch metal electrode 141. It can be understood that in the display module provided by the embodiment of the present invention, the touch layer 14 can be either a mutual capacitance touch structure or a self-capacitance touch structure, which is not limited herein.

[0038] The backplane 20 is disposed on the back side of the light-emitting side of the display panel 10, and the material of the backplane 20 may include an organic resin material.

[0039] The buffer layer 30 is disposed on the side of the backplane 20 away from the display panel 10, and the material of the buffer layer 30 may include foam.

[0040] Further, the display module further includes a sensing component (not shown in the figure), such as a collimating device, etc., and an opening 31 is provided in the buffer layer 30. Among them, the sensing component can be disposed on the side of the buffer layer 30 away from the backplane 20 corresponding to the opening 31, thereby improving the sensing effect of the sensing component.

[0041] In the embodiment of the present invention, a concavo-convex structure 40 is provided between the backplane 20 and the buffer layer 30, and the concavo-convex structure 40 includes a plurality of isolation grooves 41 spaced apart between the backplane 20 and the buffer layer 30. Among them, in the area corresponding to each isolation groove 41, the backplane 20 and the buffer layer 30 are spaced apart to form a plurality of hollow structures between the backplane 20 and the buffer layer 30. Further, a film layer interface same as that at the opening 31, that is, the interface formed by the backplane 20 and the air, is distributed in the normal display area 101.

[0042] Specifically, for the light rays a and b emitted by the light-emitting part 131, the light rays a and b reach the junction of the backplane 20 and the buffer layer 30 after being reflected by the upper film layer, such as the touch layer 14 or the encapsulation layer, etc. On the one hand, the light ray a reaches the opening 31 after reflection and is reflected by the interface between the backplane 20 and the air to the corresponding thin-film transistor 121. On the other hand, the light ray b reaches the junction of the backplane 20 and the buffer layer 30, and in the area where the isolation groove 41 is provided, an interface between the backplane 20 and the air is formed to reflect the light to the corresponding thin-film transistor 121. Since the propagation media and film layer interfaces passed by the light ray a and the light ray b are the same, and thus the light reflection intensities are the same, the light intensities of the light ray a and the light ray b reflected onto the corresponding thin-film transistors 121 are the same, so that the characteristic change ranges of the thin-film transistors 121 in the normal display area 101 and the function display area 102 are close to each other, thereby improving the display uniformity of the display panel.

[0043] It should be noted that in other embodiments of the present invention, if other functional materials are filled in the opening 31, the same functional materials can also be filled in the isolation groove 41, so that the film layer interfaces at the functional groove 41 and the opening 31 are the same.

[0044] In this embodiment, the concavo-convex structure 40 further includes a plurality of convex portions 42, and the plurality of convex portions 42 are spaced apart on the side of the buffer layer 30 close to the backplane 20, wherein the plurality of convex portions 42 and the buffer layer 30 are integrally formed. Specifically, each convex portion 42 is located between any two adjacent isolation grooves 41, and one end of each convex portion 42 is integrally formed with the buffer layer 30, and the other end is connected to the backplane 20 and can be adhered to the backplane 20 through an adhesive layer.

[0045] It should be noted that the sum of the contact areas where the plurality of convex portions 42 are connected to the backplane 20 is smaller than the sum of the orthographic projection areas of the isolation grooves 41 on the backplane 20, and thus the area of the interface formed between the backplane 20 and the air can be increased, so as to further improve the display uniformity between the normal display area 101 and the function display area 102 of the display module.

[0046] In this embodiment, the cross-sectional shape of each convex portion 42 can be conical, and the cross-sectional shape of the isolation groove 41 located between adjacent convex portions 42 can be trapezoidal in reverse.

[0047] Optionally, the plurality of convex portions 42 are arranged in an array and spaced apart in the normal display area 101, and the plurality of isolation grooves 41 are arranged in an array and spaced apart in the normal display area 101.

[0048] Optionally, the plurality of isolation grooves 41 are connected and arranged in a spiral shape around the function display area 102, the plurality of convex portions 42 are connected and arranged in a spiral shape around the function display area 102, and along the direction away from the function display area 102, the isolation grooves 41 and the convex portions 42 are alternately arranged.

[0049] During the manufacturing process, an uneven structure 40 can be formed on the surface of one side of the buffer layer 30 by means of rolling or the like, and the side of the buffer layer 30 with the uneven structure 40 is adhered to the backplane 20. Among them, the adhesive layer is arranged at the top of a plurality of convex portions 42, and is adhered and connected to the backplane 20 through the convex portions 42.

[0050] Continuing from the above, in the embodiment of the present invention, by arranging the uneven structure 40 in the conventional display area 101, and the uneven structure 40 includes a plurality of isolation grooves 41 distributed at intervals, the backplane 20 and the buffer layer 30 are isolated at the isolation grooves 41 to form a hollow structure, so that the light propagation interfaces at the isolation grooves 41 and the openings 31 are the same, that is, the backplane is in contact with the air, reducing the difference in the reflected light intensity between the functional display area 102 and the conventional display area 101, and improving the uneven display phenomenon of the display module.

[0051] Please refer to Figure 3 , in another embodiment of the present invention, the uneven structure 40 further includes a plurality of convex portions 42, and the plurality of convex portions 42 are distributed at intervals on the side of the buffer layer 30 close to the backplane 20. Among them, the plurality of convex portions 42 and the buffer layer 30 are integrally formed. Specifically, each convex portion 42 is located between any two adjacent isolation grooves 41, and one end of each convex portion 42 is integrally formed with the buffer layer 30, and the other end is connected to the backplane 20 and can be adhered to the backplane 20 through the adhesive layer.

[0052] It should be noted that the sum of the contact areas where the plurality of convex portions 42 are connected to the backplane 20 is smaller than the sum of the orthographic projection areas of the isolation grooves 41 on the backplane 20, so as to increase the area of the interface formed by the backplane 20 and the air, and further improve the display uniformity between the conventional display area 101 and the functional display area 102 of the display module.

[0053] In this embodiment, the cross-sectional shape of each convex portion 42 can be arc-shaped, and the side walls of the isolation grooves 41 located between adjacent convex portions 42 can also be arc-shaped.

[0054] Continuing from the above, in the embodiment of the present invention, by arranging the uneven structure 40 in the conventional display area 101, and the uneven structure 40 includes a plurality of isolation grooves 41 distributed at intervals, the backplane 20 and the buffer layer 30 are isolated at the isolation grooves 41 to form a hollow structure, so that the light propagation interfaces at the isolation grooves 41 and the openings 31 are the same, that is, the backplane is in contact with the air, reducing the difference in the reflected light intensity between the functional display area 102 and the conventional display area 101, and improving the uneven display phenomenon of the display module.

[0055] Please refer to Figure 4, in another embodiment of the present invention, the concavo-convex structure 40 further includes a plurality of convex portions 42, and the plurality of convex portions 42 are spaced apart and distributed on the side of the buffer layer 30 close to the back plate 20. Among them, the plurality of convex portions 42 and the buffer layer 30 are integrally formed. Specifically, each convex portion 42 is located between any two adjacent isolation grooves 41, and one end of each convex portion 42 is integrally formed with the buffer layer 30, and the other end is connected to the back plate 20 and can be adhered to the back plate 20 through an adhesive layer.

[0056] It should be noted that the sum of the contact areas where the plurality of convex portions 42 are connected to the back plate 20 is smaller than the sum of the orthographic projection areas of the isolation grooves 41 on the back plate 20. Furthermore, the area of the interface formed by the back plate 20 and the air can be increased, so as to further improve the display uniformity of the display module between the normal display area 101 and the functional display area 102.

[0057] In this embodiment, the cross-sectional shape of each convex portion 42 can be rectangular, and the side walls of the isolation grooves 41 located between adjacent convex portions 42 can also be rectangular.

[0058] Continuing from the above, in the embodiment of the present invention, by providing the concavo-convex structure 40 in the normal display area 101, and the concavo-convex structure 40 includes a plurality of isolation grooves 41 that are spaced apart, the back plate 20 and the buffer layer 30 are isolated at the isolation grooves 41 to form a hollow structure. Furthermore, the light propagation interfaces at the isolation grooves 41 and the openings 31 are the same, that is, the back plate interfaces with the air, reducing the difference in the reflected light intensity between the functional display area 102 and the normal display area 101, and improving the display unevenness phenomenon of the display module.

[0059] Please refer to Figure 5 , in another embodiment of the present invention, the concavo-convex structure 40 further includes a plurality of convex portions 42, and the plurality of convex portions 42 are spaced apart and distributed on the side of the back plate 20 close to the buffer layer 30. Among them, the plurality of convex portions 42 and the back plate 20 are integrally formed. Specifically, each convex portion 42 is located between any two adjacent isolation grooves 41, and one end of each convex portion 42 is integrally formed with the back plate 20, and the other end is connected to the buffer layer 30 and can be adhered to the buffer layer 30 through an adhesive layer.

[0060] It should be noted that one end of each convex portion 42 close to the buffer layer 30 is flush with the surface of the back plate 20 on the side close to the buffer layer 30 and within the functional display area 102, that is, the tops of the plurality of convex portions 42 do not exceed the surface of the back plate 20 on the side close to the buffer layer 30, and the plurality of isolation grooves 41 are located between adjacent convex portions 42.

[0061] In this embodiment, the cross-sectional shape of each convex portion 42 can be conical, and the side walls of the isolation grooves 41 located between adjacent convex portions 42 can also be rectangular.

[0062] Optionally, the cross-sectional shape of each convex portion 42 may also be rectangular or arc-shaped.

[0063] Continuing from the above, in the embodiment of the present invention, by providing a concavo-convex structure 40 in the conventional display area 101, and the concavo-convex structure 40 includes a plurality of isolation grooves 41 distributed at intervals, at the isolation grooves 41, the backplane 20 and the buffer layer 30 are isolated from each other to form a hollow structure. Furthermore, the light propagation interfaces at the isolation grooves 41 and the openings 31 are the same, that is, the backplane is in contact with air, reducing the difference in reflected light intensity between the functional display area 102 and the conventional display area 101, and improving the uneven display phenomenon of the display module.

[0064] It should be noted that, in the embodiment of the present invention, when the plurality of convex portions 42 are integrally formed with the buffer layer 30, the top ends of the respective convex portions 42 may also be flush with the surface of the buffer layer 30 on the side close to the backplane 20; when the plurality of convex portions 42 are integrally formed with the backplane 20, the top ends of the respective convex portions 42 may protrude from the surface of the backplane 20 on the side close to the buffer layer 30.

[0065] In addition, the embodiment of the present invention further provides a display device, which includes the display module described in the above embodiment.

[0066] In the above embodiments, the descriptions of the respective embodiments have their own emphases. For parts not described in detail in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

[0067] The above has introduced in detail a display module and a display device provided by the embodiments of the present invention. Specific examples are used herein to illustrate the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the technical solution and its core idea of the present invention; those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A display module, characterized in that, The display module includes a regular display area and a functional display area adjacent to the regular display area; The display module further includes: A display panel; A backplane disposed on one side of the display panel; A buffer layer disposed on the side of the backplane away from the display panel, and an opening located in the functional display area is provided in the buffer layer; Wherein, a concavo-convex structure is provided between the backplane and the buffer layer in the regular display area, the concavo-convex structure includes a plurality of isolation grooves spaced apart between the backplane and the buffer layer, and the backplane and the buffer layer are spaced apart at the isolation grooves.

2. The display module according to claim 1, wherein The concavo-convex structure further includes a plurality of convex portions provided between the backplane and the buffer layer, and each convex portion is located between two adjacent isolation grooves.

3. The display module according to claim 2, wherein The plurality of convex portions are arranged in an array and spaced apart in the regular display area, and the plurality of isolation grooves are arranged in an array and spaced apart in the regular display area.

4. The display module according to claim 2, characterized in that, The plurality of isolation grooves are connected and arranged in a spiral shape around the functional display area, the plurality of convex portions are connected and arranged in a spiral shape around the functional display area, and along the direction away from the functional display area, the isolation grooves and the convex portions are alternately arranged.

5. The display module according to claim 2, wherein, The plurality of convex portions are provided on the buffer layer and located on the side of the buffer layer close to the backplane, and one end of each convex portion away from the buffer layer is connected to the backplane.

6. The display module according to claim 5, characterized in that The connection area between the plurality of convex portions and the backplane is smaller than the orthographic projection area of the plurality of isolation grooves on the backplane.

7. The display module according to claim 2, wherein The plurality of convex portions are provided on the backplane and located on the side of the backplane close to the buffer layer, and one end of each convex portion away from the backplane is connected to the buffer layer.

8. The display module according to claim 7, wherein One end of each convex portion close to the buffer layer is flush with the surface of the backplane close to the buffer layer and located in the functional display area.

9. The display module according to claim 1, wherein The display module further includes a sensing component, and the sensing component is disposed on the side of the buffer layer away from the backplane corresponding to the opening.

10. A display device, characterized in that, The display device includes the display module according to any one of claims 1 to 9.

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