Display module and display device

Abstract

This application discloses a display module and display device, belonging to the field of display technology. The display module includes: a display panel, a first colloidal filler portion, a first enclosure portion, a second enclosure portion, and multiple functional film layers. Since the first colloidal filler portion is located between the first and second enclosure portions, and the first and second enclosure portions have poor flowability, the process of applying adhesive between the first and second enclosure portions to form the first colloidal filler portion can effectively prevent the first colloidal filler portion, which has good flowability, from overflowing from both ends of the accommodating space after the panel bending portion is bent and before the first colloidal filler portion is fully cured. This would prevent the first colloidal filler portion from having a poor effect on strengthening the panel bending portion in the display panel, resulting in poor impact resistance of the panel bending portion, thus effectively improving the reliability of the display module.

Description

Technical Field

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

[0002] Currently, display devices typically use display modules with flexible display panels and protective covers as displays. These flexible display panels have advantages over traditional flexible display panels, such as being deformable, bendable, and having better flexibility.

[0003] The flexible display panel includes: a first panel portion and a second panel portion disposed opposite to each other, and a panel bending portion connecting the first panel portion and the second panel portion. Multiple support layers are disposed between the first panel portion and the second panel portion. A protective colloid is filled in the accommodating space enclosed by the panel bending portion and the multiple support layers.

[0004] However, existing protective colloids provide poor protection for display panels, resulting in poor product reliability. Summary of the Invention

[0005] This application provides a display module and display device. It can solve the problem of poor reliability of existing display panels. The technical solution is as follows: On the one hand, a display module is provided, including: a display panel, a first colloid filling part, a first enclosure part, a second enclosure part, and multiple functional film layers; The display panel includes: a first panel portion and a second panel portion that are distributed opposite to each other, and a panel bending portion for connecting the first panel portion and the second panel portion; the first panel portion has a display surface; The plurality of functional film layers are stacked between the first panel portion and the second panel portion; and the plurality of functional film layers and the panel bending portion form an accommodating space; The first colloidal filling portion, the first enclosure portion, and the second enclosure portion are all located within the accommodating space; In a first direction parallel to the bending axis of the panel bending portion, the first colloid filling portion is located between the first enclosure portion and the second enclosure portion; the viscosity of both the first enclosure portion and the second enclosure portion is greater than the viscosity of the first colloid filling portion.

[0006] Optionally, in the first direction, the two end faces of the first filling gel portion are in direct contact with the first enclosure portion and the second enclosure portion, respectively; and the side of the first enclosure portion away from the first filling gel portion is flush with one side of the panel bending portion in the first direction, and the side of the second enclosure portion away from the first filling gel portion is flush with the other side of the panel bending portion in the first direction.

[0007] Optionally, the display module further includes: a baffle portion located within the accommodating space; the baffle portion is distributed in a second direction between at least a portion of the multiple functional film layers and the first colloidal filling portion; the second direction is perpendicular to the first direction and parallel to the display surface of the first panel portion; The baffle portion extends along the first direction and is in direct contact with at least the first colloid filling portion.

[0008] Optionally, the plurality of functional film layers include: a first back film, a main support layer, a support column, and a second back film stacked together; the first back film is connected to the back side of the first panel portion, the main support layer is connected to the side of the first back film opposite to the first panel portion, the second back film is connected to the back side of the second panel portion, and the two sides of the support column are respectively connected to the main support layer and the second back film. In the second direction, the baffle portion is located on the side of the stacked main support layer and the support column facing the panel bending portion; in the third direction, the baffle portion is located between the first back film and the second back film; the third direction is perpendicular to the display surface of the first panel portion.

[0009] Optionally, in the second direction, the baffle portion directly contacts the side of the main support layer facing the panel bend and also directly contacts the side of the support column facing the panel bend. And / or, in the third direction, the opposite sides of the baffle portion are in direct contact with the first back film and the second back film.

[0010] Optionally, the display module further includes: a second colloidal filling portion; the second colloidal filling portion is located between the baffle portion and the main support layer in the second direction, and in the second direction, the opposite sides of the second colloidal filling portion are in direct contact with the baffle portion and the main support layer, respectively; The deformation coefficient of the second colloidal filler is smaller than that of the first colloidal filler.

[0011] Optionally, in the third direction, one side of the second colloidal filling portion is in direct contact with the first back film, while the other side is separated from the second back film.

[0012] Optionally, the display module further includes: a cover plate, a third enclosure, a fourth enclosure, and a third colloid filling part; The cover plate is located on the side of the first panel portion opposite to the second panel portion; the cover plate includes: a cover plate body covering the first panel portion, and a first protrusion connected to the cover plate body, the first protrusion being capable of covering the panel bending portion; The third and fourth enclosure portions are located on the side of the cover plate facing the display panel; in the first direction, the panel bending portion is located between the third and fourth enclosure portions, and the two end faces of the panel bending portion are in direct contact with the third and fourth enclosure portions respectively. In the first direction, the third colloid filling portion is located between the third enclosure portion and the fourth enclosure portion; and in the third direction, the third colloid filling portion is located between the first protrusion portion and the panel bending portion; The viscosity of the third enclosure and the viscosity of the fourth enclosure are both greater than the viscosity of the third colloidal filler.

[0013] Optionally, the orthographic projection of the panel bending portion on the cover plate is located within the orthographic projection of the third colloid filling portion on the cover plate.

[0014] Optionally, the display module further includes: a protective colloid; the protective colloid is located on the back side of the panel bending portion, and the protective colloid is in direct contact with the third colloid filling portion; In the third direction, the heights of the third and fourth enclosure portions are both greater than or equal to the vertical distance between the midpoint of the bend in the panel and the cover plate. In the second direction, the minimum distance between the third enclosure portion and the side of the first protrusion away from the cover plate body is less than or equal to the minimum distance between the protective colloid and the side of the first protrusion away from the cover plate body; and the minimum distance between the fourth enclosure portion and the side of the first protrusion away from the cover plate body is less than or equal to the minimum distance between the protective colloid and the side of the first protrusion away from the cover plate body.

[0015] Optionally, in the third direction, the maximum width of the third colloid filling portion is less than or equal to the height of the third enclosure portion, and less than or equal to the height of the fourth enclosure portion.

[0016] Optionally, the display module further includes: a connecting adhesive portion located on the side of the second panel portion opposite to the first panel portion; the side of the connecting adhesive portion opposite to the second panel portion is connected to the middle frame; The orthographic projection of the connecting colloid portion on the cover plate is located within the orthographic projection of the second panel portion on the cover plate.

[0017] Optionally, the connecting adhesive portion includes: an adhesive frame, and a fourth adhesive filling portion located within the adhesive frame; The viscosity of the glue frame is greater than the viscosity of the fourth colloid filling part.

[0018] Optionally, at least one of the first enclosure, the second enclosure, the third enclosure, the fourth enclosure, and the frame includes: a plurality of printed strips stacked in a direction away from the cover plate.

[0019] On the other hand, a display device is provided, comprising: a mid-frame, and a display module connected to the mid-frame, wherein the display module is any of the display modules described above.

[0020] The beneficial effects of the technical solutions provided in this application include at least the following: In the display module provided in this application embodiment, since the first colloidal filling part is located between the first enclosure part and the second enclosure part, and the first enclosure part and the second enclosure part have poor fluidity, the process of applying adhesive between the first enclosure part and the second enclosure part to form the first colloidal filling part can effectively prevent the first colloidal filling part with good fluidity from overflowing from both ends of the accommodating space after the panel bending part is bent and before the first colloidal filling part is completely cured. This would result in the first colloidal filling part having a poor effect on strengthening the panel bending part in the display panel, and thus a poor impact resistance effect of the panel bending part, thereby effectively improving the reliability of the display module. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the film layer structure of a display module provided in an embodiment of this application; Figure 2 This is a schematic diagram of the film layer structure of another display module provided in an embodiment of this application; Figure 3 This is a top view of a display panel before it is bent, provided in an embodiment of this application; Figure 4 This is a top view of a panel with limiting fixtures provided at both ends of the bent portion, as provided in an embodiment of this application; Figure 5 yes Figure 4 The diagram shows the film structure of the display module at point A-A'. Figure 6 This is a schematic diagram of the film layer structure of another display module provided in the embodiments of this application; Figure 7 This is a top view of another display panel before bending, provided in an embodiment of this application; Figure 8 yes Figure 7 The diagram shows the film structure of the display module at B-B'. Figure 9 This is a schematic diagram of the film layer structure of another display module provided in the embodiments of this application; Figure 10 This is a schematic diagram of the film layer structure of a display module provided in another embodiment of this application; Figure 11 This is a partially enlarged schematic diagram of a display module provided in an embodiment of this application; Figure 12 This is a partially enlarged schematic diagram of another display module provided in an embodiment of this application; Figure 13 This is a top view of a display module provided in an embodiment of this application; Figure 14 yes Figure 13 The diagram shows the film structure of the display module at C-C'. Figure 15 yes Figure 13 The diagram shows the film structure of the display module at point D-D'. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0024] Please refer to Figure 1 , Figure 2 and Figure 3 , Figure 1 This is a schematic diagram of the film layer structure of a display module provided in an embodiment of this application. Figure 2 This is a schematic diagram of the film layer structure of another display module provided in an embodiment of this application. Figure 3 This is a top view of a display panel before bending, provided in an embodiment of this application. The display module 000 may include: a display panel 100, a first colloid filling portion 200, a first enclosure portion 300, a second enclosure portion 400, and a plurality of functional film layers 500.

[0025] The display panel 100 in the display module 000 may include: a first panel portion 110 and a second panel portion 120 distributed opposite to each other, and a panel bending portion 130 for connecting the first panel portion 110 and the second panel portion 120. That is, the panel bending portion 130 may be located between the first panel portion 110 and the second panel portion 120, and one side of the panel bending portion 130 may be connected to the first panel portion 110, and the other side of the panel bending portion 130 may be connected to the second panel portion 120. The first panel portion 110 has a display surface S, and the display module 000 can display an image through the display surface S of the first panel portion 110.

[0026] Multiple functional film layers 500 in the display module 000 are stacked between the first panel portion 110 and the second panel portion 120; and the multiple functional film layers 500 and the panel bending portion 130 form an accommodating space R.

[0027] The first gel filler portion 200, the first blocking portion 300, and the second blocking portion 400 in the display module 000 are all located within the accommodating space R. Thus, the first gel filler portion 200, the first blocking portion 300, and the second blocking portion 400, located within the accommodating space R, can strengthen the panel bending portion 130 in the display panel 100, thereby protecting the panel bending portion 130 from damage. It should be noted that the first gel filler portion 200, the first blocking portion 300, and the second blocking portion 400 are all in direct contact with the back side of the panel bending portion 130.

[0028] Specifically, in a first direction x parallel to the bending axis of the panel bending portion 130, the first adhesive filling portion 200 is located between the first blocking portion 300 and the second blocking portion 400. It should be noted that the viscosity of both the first blocking portion 300 and the second blocking portion 400 is greater than the viscosity of the first adhesive filling portion 200. Here, before the adhesive cures, the adhesive with higher viscosity has lower fluidity, and the adhesive with lower viscosity has higher fluidity. Thus, because the first blocking portion 300 and the second blocking portion 400 have lower fluidity due to their higher viscosity, it is beneficial to control the width of the first blocking portion 300 and the width of the second blocking portion 400.

[0029] In this case, since the first colloid filling part 200 is located between the first enclosure part 300 and the second enclosure part 400, and the first enclosure part 300 and the second enclosure part 400 have poor flowability, during the process of applying adhesive between the first enclosure part 300 and the second enclosure part 400 to form the first colloid filling part 200, it can effectively prevent the first colloid filling part 200 with good flowability from overflowing from both ends of the accommodating space R after the panel bending part 130 is bent and before the first colloid filling part 200 is completely cured. This would result in a poor effect of the first colloid filling part 200 in strengthening the panel bending part 130, and thus a poor impact resistance of the panel bending part 130, effectively improving the reliability of the display module 000.

[0030] In summary, the embodiments of this application provide a display module. Since the first colloidal filling portion is located between the first enclosure portion and the second enclosure portion, and the first enclosure portion and the second enclosure portion have poor fluidity, the process of applying adhesive between the first enclosure portion and the second enclosure portion to form the first colloidal filling portion can effectively prevent the first colloidal filling portion with good fluidity from overflowing from both ends of the accommodating space after the panel bending portion is bent and before the first colloidal filling portion is completely cured. This would result in the first colloidal filling portion having a poor effect on strengthening the panel bending portion in the display panel, and thus a poor impact resistance effect of the panel bending portion, effectively improving the reliability of the display module.

[0031] It should be noted that the viscosity of the adhesive forming the first enclosure portion 300 and the viscosity of the adhesive forming the second enclosure portion 400 are as high as possible. For example, the viscosity of the adhesive forming the first enclosure portion 300 is greater than 1000 Pa·s, and the viscosity of the adhesive forming the second enclosure portion 400 is greater than 1000 Pa·s, which is beneficial for controlling the width of the first enclosure portion 300 and the width of the second enclosure portion 400. Furthermore, in the first direction x, the width of the first enclosure portion 300 is less than or equal to 50 micrometers, and the width of the second enclosure portion 400 is less than or equal to 50 micrometers.

[0032] It should also be noted that the modulus of the adhesive forming the first enclosure portion 300 after curing and the modulus of the adhesive forming the second enclosure portion 400 after curing can be less than the modulus of the adhesive forming the first colloid filling portion 200 after curing. This facilitates bending of the panel bending portion 130. For example, the modulus of the adhesive forming the first enclosure portion 300 after curing ranges from 100 MPa to 500 MPa, and the modulus of the adhesive forming the second enclosure portion 400 after curing ranges from 100 MPa to 500 MPa.

[0033] In the embodiments of this application, such as Figure 1 and Figure 2 As shown, the multiple functional film layers 500 in the display module 000 may include: a first back film 510, a main support layer 520, a support column 530, and a second back film 540 stacked together. The first back film 510 is connected to the back side of the first panel portion 110 (that is, the side opposite to the front side of the first panel portion 110), the main support layer 520 is connected to the side of the first back film 510 away from the first panel portion 110, the second back film 540 is connected to the back side of the second panel portion 120, and the two sides of the support column 530 are connected to the main support layer 520 and the second back film 540, respectively.

[0034] Among the multiple functional film layers 500, the first back film 510 can be bonded to the back side of the first panel portion 110, and the first back film 510 can be used to support the first panel portion 110. The second back film 540 can be bonded to the side of the second panel portion 120 facing the first panel portion 110, and the second back film 540 can be used to support the second panel portion 120.

[0035] The main support layer 520 among the multiple functional film layers 500 can be located on the side of the first back film 510 away from the first panel portion 110, and the main support layer 520 can be used to support the first panel portion 110. Here, the side of the main support layer 520 away from the first back film 510 can be bonded to the side of the support post 530 facing the first panel portion 110.

[0036] One side of the support post 530 among the multiple functional film layers 500 can be bonded to the side of the main support layer 520 away from the first panel portion 110, and the other side can be bonded to the side of the second back film 540 facing the second panel portion 120. The support post 530 can be used to bond the main support layer 520 and the second back film 540 and to support the main support layer 520 and the second back film 540.

[0037] In the embodiments of this application, such as Figure 3 As shown, in the first direction x, the two end faces of the first filling colloid portion 200 are in direct contact with the first enclosure portion 300 and the second enclosure portion 400, respectively; and the side of the first enclosure portion 300 away from the first filling colloid portion 200 is flush with the side of the panel bending portion 130 in the first direction x, and the side of the second enclosure portion 400 away from the first filling colloid portion 200 is flush with the other side of the panel bending portion 130 in the first direction x.

[0038] In this way, it can be ensured that the edges of both ends of the accommodating space R in the first direction x are completely filled by the first blocking part 300 and the second blocking part 400 respectively. The first blocking part 300 and the second blocking part 400 can effectively strengthen the edge of the panel bending part 130 in the display panel 100, thereby enabling the first blocking part 300 and the second blocking part 400 to effectively protect the edge of the panel bending part 130, so as to ensure that the panel bending part 130 is not easily damaged.

[0039] It should be noted that, in order to ensure that the side of the first enclosure portion 300 facing away from the first filling gel portion 200 is flush with the side of the panel bending portion 130 in the first direction x, and the side of the second enclosure portion 400 facing away from the first filling gel portion 200 is flush with the other side of the panel bending portion 130 in the first direction x, limiting fixtures can be provided at both ends of the panel bending portion 130. Please refer to... Figure 4 , Figure 4This is a top view of a panel bending portion 130 with limiting fixtures at both ends, as provided in an embodiment of this application. Two limiting fixtures 01 are located on both sides of the panel bending portion 130. The distance between the limiting fixtures and the edge of the panel bending portion 130 is less than or equal to 50 micrometers. The first blocking portion 300 and the second blocking portion 400 can be manufactured using processes such as 3D printing that enable high-precision dispensing. UV pre-curing is performed simultaneously with dispensing the first blocking portion 300 and the second blocking portion 400 to further reduce the flowability of the adhesive forming the first blocking portion 300 and the second blocking portion 400, thereby preventing the more fluid first adhesive filling portion 200 from overflowing from both ends of the accommodating space R.

[0040] It should also be noted that, please refer to Figure 5 , Figure 5 yes Figure 4 The diagram shows the film layer structure of the display module at point A-A'. In the third direction z, the height of the second blocking portion 400 is greater than or equal to the thickness of the first back film 510, and greater than or equal to the thickness of the second back film 540. Similarly, the height of the first blocking portion 300 is greater than or equal to the thickness of the first back film 510, and greater than or equal to the thickness of the second back film 540. Thus, during the dispensing process between the first blocking portion 300 and the second blocking portion 400, it is possible to prevent the adhesive forming the first filling adhesive 200 from overflowing from the surface of the first blocking portion 300 away from the panel bending portion 130, and also to prevent the adhesive forming the first filling adhesive 200 from overflowing from the surface of the second blocking portion 400 away from the panel bending portion 130.

[0041] In the embodiments of this application, please refer to Figure 6 , Figure 6 This is a schematic diagram of the film layer structure of another display module provided in this application embodiment. The display module 000 may further include: a baffle portion 600 located within the accommodating space R. The baffle portion 600 is distributed in the second direction y between at least a portion of the functional film layers 500 and the first colloid filling portion 200; the second direction y is perpendicular to the first direction x and parallel to the display surface S of the first panel portion 110.

[0042] The baffle portion 600 extends along the first direction x and is in direct contact with at least the first colloid filling portion 200.

[0043] Because the filling rate of the accommodating space R is affected by the bonding accuracy of the main support layer 520 and the bending accuracy of the panel bending portion 130, the filling rate of the accommodating space R fluctuates significantly under the same amount of adhesive filling, leading to the risk of insufficient adhesive. Therefore, by setting the baffle portion 600, the risk of insufficient adhesive due to a low filling rate of the accommodating space R caused by the bonding accuracy of the main support layer 520 is effectively avoided.

[0044] It should be noted that the baffle 600 can be manufactured using 3D printing technology. Furthermore, the amount of adhesive applied can be adjusted according to the bonding position of the main support layer 520 to ensure the filling rate of the accommodating space R, thereby effectively strengthening the panel bending portion 130 in the display panel 100.

[0045] It should also be noted that, please refer to Figure 7 , Figure 7 This is a top view of another display panel before bending, provided in an embodiment of this application. Considering the fluctuation in fill rate caused by the bending accuracy of the panel bending portion 130, the horizontal distance d between the side of the baffle portion 600 facing the panel bending portion 130 and the side of the first back film 510 facing the panel bending portion 130 can be 50 micrometers. Please refer to... Figure 8 , Figure 8 yes Figure 7 The diagram shows the film structure of the display module at point B-B'. During the dispensing process to form the baffle portion 600, in the third direction z, the height of the baffle portion 600 is less than or equal to the sum of the thicknesses of the main support layer 520 and the support pillar 530. This avoids the baffle portion 600 from being too high, which could affect the bonding effect between the support pillar 530 and the second back film 540.

[0046] like Figure 6 As shown, in the second direction y, the baffle portion 600 is located on the side of the stacked main support layer 520 and support column 530 facing the panel bending portion 130; in the third direction z, the baffle portion 600 is located between the first back film 510 and the second back film 540; the third direction y is perpendicular to the display surface S of the first panel portion 110.

[0047] In addition, please refer to Figure 9 , Figure 9 This is a schematic diagram of the film layer structure of another display module provided in this application embodiment. The baffle portion 600 can also directly contact the first enclosure portion 300. Similarly, the baffle portion 600 can also directly contact the second enclosure portion 400. That is, in the first direction x, the length of the baffle portion 600 is equal to the length of the panel bending portion 130, so as to ensure that the baffle portion 600 can effectively avoid the risk of insufficient glue due to the low filling rate of the accommodating space R caused by the bonding accuracy of the main support layer 520.

[0048] In this application, the bar section 600 in the display module 000 has multiple possible configurations. The embodiments of this application illustrate the following two possible configurations as examples.

[0049] In the first case, such as Figure 6 and Figure 9As shown, in the second direction y, the baffle portion 600 is in direct contact with the side of the main support layer 520 facing the panel bending portion 130, and is also in direct contact with the side of the support column 530 facing the panel bending portion 130.

[0050] And / or, on a third-party z-axis, the opposing sides of the baffle portion 600 are in direct contact with the first back film 510 and the second back film 540. For example, as Figure 6 and Figure 9 As shown, the baffle sections 600 are in direct contact with the main support layer 520, the support column 530, the first back film 510, and the second back film 540. This ensures that the filling rate of the accommodating space R fluctuates less and improves the uniformity of the first filling colloid section 200 filling the accommodating space R.

[0051] In the second case, please refer to Figure 10 , Figure 10 This is a schematic diagram of the film layer structure of a display module according to another embodiment of this application. The display module 000 may further include a second colloidal filling portion 700. The second colloidal filling portion 700 is located between the baffle portion 600 and the main support layer 520 in the second direction y, and in the second direction x, the opposite sides of the second colloidal filling portion 700 are in direct contact with the baffle portion 600 and the main support layer 520, respectively.

[0052] It should be noted that during the temperature-controlled test, the first colloidal filler portion 200 deforms with temperature changes. Specifically, as the temperature rises, the first colloidal filler portion 200 expands outward; as the temperature decreases, it contracts inward. Furthermore, the main support layer 520 contracts significantly inward as the temperature decreases. Therefore, the panel bending portion 130 experiences a tensile force F1 generated by the outward expansion of the first colloidal filler portion 200, leading to cracks appearing on both sides of the panel bending portion 130 and at the connection between the panel bending portion 130 and the first panel portion 110 in the first direction x, which extend further into the interior of the first panel portion 110, causing display abnormalities. Conversely, the first panel portion 110 experiences a tensile force F2 generated by the inward contraction of the main support layer 520, leading to cracks appearing on both sides of the panel bending portion 130 and at the connection between the panel bending portion 130 and the first panel portion 110 in the first direction x, which extend further into the interior of the first panel portion 110, causing display abnormalities.

[0053] To address the aforementioned issues, a second colloidal filling portion 700 is provided in the display module 000, and the deformation coefficient of the second colloidal filling portion 700 is less than that of the first colloidal filling portion 200. Under the same temperature change, the unit deformation of the second colloidal filling portion 700 is less than that of the first colloidal filling portion 200. That is, when the temperature increases, the unit expansion of the second colloidal filling portion 700 is less than that of the first colloidal filling portion 200; when the temperature decreases, the unit contraction of the second colloidal filling portion 700 is less than that of the first colloidal filling portion 200. In this case, since the accommodating space R is filled with the second colloidal filling portion 700, and the deformation coefficient of the second colloidal filling portion 700 is less than that of the first colloidal filling portion 200... Therefore, the amount of the first adhesive filler 200 within the accommodating space R can be effectively reduced, thereby preventing excessive stretching of the panel bending portion 130 due to expansion or contraction of the first adhesive filler 200 during the temperature stamping test. This reduces the probability of cracks appearing on both sides of the panel bending portion 130 and at the connection between the panel bending portion 130 and the first panel portion 110 in the first direction x, and further extending into the interior of the first panel portion 110, resulting in display abnormalities. For example, the second adhesive filler 700 is MCL adhesive.

[0054] It should be noted that, in the second direction y, the distance D between the side of the main support layer 520 facing the panel bending portion 130 and the side of the first back film 510 facing the panel bending portion 130 is greater than 400 micrometers. That is, by inwardly contracting the side of the main support layer 520 facing the panel bending portion 130, the tension generated by the inward contraction of the main support layer 520 on the edge of the first panel portion 110 is reduced. This reduces the probability of cracks appearing at the connection between the panel bending portion 130 and the first panel portion 110 on both sides of the panel bending portion 130 and extending further into the interior of the first panel portion 110, thus causing display abnormalities.

[0055] It should also be noted that, in the third direction z, one side of the second adhesive filler 700 is in direct contact with the first back film 510, while the other side is separated from the second back film 540. This prevents the second adhesive filler 700 from affecting the adhesion between the support column 530 and the second back film 540 after thermal expansion. Furthermore, in this case, in the third direction z, the height of the baffle 600 is less than the sum of the thicknesses of the main support layer 520 and the support column 530. Here, the height of the baffle 600 should be slightly less than the sum of the thicknesses of the main support layer 520 and the support column 530 to prevent uncured first adhesive filler 200 from flowing into the gap between the second adhesive filler 700 and the second back film 540.

[0056] For example, in the third direction z, the height of the baffle portion 600 ranges from 150 micrometers to 200 micrometers, and in the second direction y, the width of the baffle portion 600 is 100 micrometers.

[0057] In addition, please refer to Figure 11 , Figure 11 This is a partially enlarged schematic diagram of a display module provided in an embodiment of this application. The main support layer 520 has two support layer protrusions 521. In the first direction x, the two support layer protrusions 521 are located at both ends of the second colloid filling portion 700, so that before the second colloid filling portion 700 cures, the support layer protrusions 521 can block the flow of the second colloid filling portion 700 towards both ends. Alternatively, please refer to... Figure 12 , Figure 12 This is a partially enlarged schematic diagram of another display module provided in an embodiment of this application. The baffle portion 600 can be U-shaped, so that the second colloid filling portion 700 is located in the area enclosed by the baffle portion 600 and the main support layer 520, thereby preventing the second colloid filling portion 700 from flowing to both ends.

[0058] In the embodiments of this application, please refer to Figure 13 , Figure 14 and Figure 15 , Figure 13 This is a top view of a display module provided in an embodiment of this application. Figure 14 yes Figure 13 The diagram shown illustrates the film structure of the display module at point C-C'. Figure 15 yes Figure 13 The diagram shows the film structure of the display module at point D-D'. The display module 000 may also include: a cover plate 800, a third enclosure 900, a fourth enclosure 1000, and a third colloid filling part 1100.

[0059] The cover plate 800 in the display module 000 is located on the side of the first panel portion 110 facing away from the second panel portion 120. The cover plate 800 may include: a cover plate body 810 covering the first panel portion 110, and a first protrusion 820 connected to the cover plate body 810. Here, the first panel portion 110 can be fitted with the cover plate body 810 in the cover plate 800, so that the cover plate body 810 can protect the side of the first panel portion 110 facing away from the multiple functional film layers 500. And the first protrusion 820 can cover the panel bending portion 130, that is, in a direction parallel to the display surface S of the display panel 100 and parallel to the second direction y, the side of the first protrusion 820 facing away from the cover plate body 810 protrudes from the side of the panel bending portion 130 facing away from the multiple functional film layers 500. In this way, the first protrusion 820 in the cover plate 800 can protect the side of the panel bending portion 130 facing the cover plate 800.

[0060] The third enclosure portion 900 and the fourth enclosure portion 1000 in the display module 000 are located on the side of the cover plate 800 facing the display panel 100; in the first direction x, the panel bending portion 130 is located between the third enclosure portion 900 and the fourth enclosure portion 1000, and the two end faces of the panel bending portion 130 are in direct contact with the third enclosure portion 900 and the fourth enclosure portion 1000, respectively.

[0061] In the first direction, the third colloid filling portion 1100 in the display module 000 is located between the third enclosure portion 900 and the fourth enclosure portion 1000; and in the third direction z, the third colloid filling portion 1100 is located between the first protrusion portion 820 and the panel bending portion 130.

[0062] The viscosity of the third enclosure part 900 and the viscosity of the fourth enclosure part 1000 are both greater than the viscosity of the third colloidal filling part 1100.

[0063] Before curing, adhesives with higher viscosity have lower fluidity, while adhesives with lower viscosity have higher fluidity. Therefore, the third and fourth blocking portions 900 and 1000, formed using adhesives with higher viscosity, are less prone to flow. After curing, these portions form barriers on both ends of the panel bending portion 130. In this way, the third blocking portion 900, the fourth blocking portion 1000, the cover plate 800, and the panel bending portion 130 can form a recessed cavity. This recessed cavity has an opening on the side opposite to the cover plate body 810, allowing adhesive for forming the third colloidal filling portion 1100 to drip into the cavity from the opening. After curing, the third colloidal filling portion 1100 is formed. Furthermore, because the third colloidal filling portion 1100, formed using adhesives with lower viscosity, has better fluidity, the adhesive can flow freely into the narrow slits within the recessed cavity. It should be noted that during the process of dispensing adhesive to form the third colloid filling part 1100, the opening of the pit-shaped cavity faces upward.

[0064] When the display module 000 is subjected to compressive force on the side away from the cover plate 800, the third colloid filling part 1100 can support the panel bending part 130 to reduce the possibility of deformation of the panel bending part 130, thereby reducing the probability of breakage of the internal wiring of the display panel 100.

[0065] For example, the viscosity of the adhesive material used for the formed third enclosure portion 900 and fourth enclosure portion 1000 is greater than 700,000 mp.s. For instance, the third enclosure portion 900 and fourth enclosure portion 1000 can be made of epoxy or acrylic adhesive materials. The curing wavelength of the adhesive material used for the formed third enclosure portion 900 and fourth enclosure portion 1000 is 470 nm. The thixotropic index of the adhesive material used for the formed third enclosure portion 900 and fourth enclosure portion 1000 is 7. The Young's modulus of the adhesive material used for the formed third enclosure portion 900 and fourth enclosure portion 1000 after curing is 1.6 GPa to 2.3 GPa. The hardness of the adhesive material used for the formed third enclosure portion 900 and fourth enclosure portion 1000 after curing is greater than 75D. In the first direction x, the width of both the third enclosure portion 900 and the fourth enclosure portion 1000 is 0.2 mm.

[0066] The viscosity of the adhesive forming the third colloidal filler 1100 is less than 200 mp.s. For example, the adhesive forming the third colloidal filler 1100 is made of epoxy or acrylic adhesive. The curing wavelength of the adhesive forming the third colloidal filler 1100 is 470 nm. The thixotropic index of the adhesive forming the third colloidal filler 1100 is 0. The Young's modulus of the adhesive forming the third colloidal filler 1100 after curing is 1.6 GPa to 2.3 GPa. The hardness of the adhesive forming the third colloidal filler 1100 after curing is greater than 75 D.

[0067] It should be noted that the orthographic projection of the panel bending portion 130 in the display panel 100 onto the cover plate 800 is located within the orthographic projection of the third colloid filling portion 1100 onto the cover plate 800.

[0068] It should also be noted that, such as Figure 14 and Figure 15 As shown, the display module 000 may further include: a protective colloid 1200; the protective colloid 1200 is located on the back side of the panel bending portion 130 (the side of the panel bending portion 130 facing away from the plurality of functional film layers 500), and the protective colloid 1200 is in direct contact with the third colloid filling portion 1100. Here, in order to clearly show the structure of the display panel 100 after bending, Figure 13 The protective colloid 1200 is not shown in the drawing.

[0069] When the outer edge of the display module 000 is impacted, the protective colloid 1200 can protect the back side of the panel bend 130 away from the side of the multiple functional film layers 500.

[0070] On the third direction z, the height h1 of the third enclosure 900 and the fourth enclosure 1000 is greater than or equal to the vertical distance h2 between the middle position of the bend of the panel bend 130 and the cover plate 800.

[0071] In the second direction y, the minimum distance L1 between the third enclosure portion 900 and the side of the first protrusion 820 facing away from the cover plate body 810 is less than or equal to the minimum distance L2 between the protective colloid 1200 and the side of the first protrusion 820 facing away from the cover plate body 810; and the minimum distance L1 between the fourth enclosure portion 1000 and the side of the first protrusion 820 facing away from the cover plate body 810 is less than or equal to the minimum distance L2 between the protective colloid 1200 and the side of the first protrusion 820 facing away from the cover plate body 810. For example, the minimum distance L1 between the third enclosure portion 900 and the side of the first protrusion 820 facing away from the cover plate body 810 ranges from 0.35 mm to 0.5 mm; the minimum distance L1 between the fourth enclosure portion 1000 and the side of the first protrusion 820 facing away from the cover plate body 810 ranges from 0.35 mm to 0.5 mm.

[0072] In this way, during the process of the adhesive forming the third colloid filling part 1100 dripping into the recessed cavity from the opening, it is possible to prevent the more fluid adhesive from overflowing from the surface of the third enclosure part 900 and the fourth enclosure part 1000 away from the cover plate body 810, as well as from overflowing from the middle of the bend of the protective colloid 1200.

[0073] Furthermore, this arrangement ensures that the orthographic projection of the panel bend 130 on the cover plate 800 lies within the orthographic projection of the third colloid filling portion 1100 on the cover plate 800. When the display module 000 is subjected to compressive force on the side away from the cover plate 800, the third colloid filling portion 1100 can support the entire panel bend 130, thereby reducing the possibility of deformation of the panel bend 130 and thus reducing the probability of breakage of the internal wiring of the display panel 100.

[0074] In this case, on the third direction z, the maximum width of the third colloid filling part 1100 is less than or equal to the height of the third enclosure part 900, and less than or equal to the height of the fourth enclosure part 1000.

[0075] In the embodiments of this application, such as Figures 13 to 15 As shown, the display module 000 may further include: a connecting adhesive portion 1300 located on the side of the second panel portion 120 opposite to the first panel portion 110; the side of the connecting adhesive portion 1300 opposite to the second panel portion 120 may be connected to the mid-frame. For example, the connecting adhesive portion 1300 and the mid-frame may be bonded together using mid-frame adhesive.

[0076] The orthographic projection of the connecting colloid portion 1300 on the cover plate 800 is located within the orthographic projection of the second panel portion 120 on the cover plate 800.

[0077] In this case, since the side of the connecting colloid portion 1300 away from the second panel portion 120 can be connected to the middle frame, the middle frame no longer needs to be connected to the first protrusion 820, and the width of the first protrusion 820 in the second direction y can be reduced, thereby effectively reducing the bezel width of the display module 000.

[0078] Furthermore, the adhesive used in the connecting colloid portion 1300 has high hardness and modulus after curing. This provides support and protection for the second panel portion 120 and the panel bending portion 130. In the event of an impact to the back of the display module 000, the connecting colloid portion 1300 can reduce the probability of the panel bending portion 130 being damaged after being subjected to significant pressure.

[0079] It should be noted that, as Figure 13 As shown, the connecting colloid portion 1300 may include: a colloid frame 1310, and a fourth colloid filling portion 1320 located within the colloid frame 1310.

[0080] The viscosity of the glue frame 1310 is greater than the viscosity of the fourth colloid filling part 1320.

[0081] Because the area of ​​the adhesive portion 1300 facing away from the second panel portion 120 that is bonded to the middle frame requires high flatness, a highly fluid adhesive is needed to ensure the flatness of this surface. In this case, to prevent the highly fluid adhesive from overflowing, a frame 1310 is first formed using a less fluid adhesive with higher viscosity, and then cured to create a barrier that prevents the highly fluid adhesive from overflowing. Next, highly fluid adhesive is filled into the barrier formed by the frame 1310 to form a fourth adhesive filling portion 1320. Because the surface of the fourth adhesive filling portion 1320 formed by the highly fluid adhesive has good flatness facing away from the second panel portion 120, the fourth adhesive filling portion 1320 is bonded to the middle frame facing away from the second panel portion 120.

[0082] It should also be noted that at least one of the first enclosure 300, the second enclosure 400, the third enclosure 900, the fourth enclosure 100, and the adhesive frame 1310 includes a plurality of printed strips K stacked in a direction away from the cover plate 800. That is, when the first enclosure 300, the second enclosure 400, the third enclosure 900, the fourth enclosure 100, and the adhesive frame 1310 are manufactured using processes such as 3D printing that enable high-precision dispensing, each of these components includes a plurality of printed strips K stacked in a direction away from the cover plate 800. For example, as... Figure 15As shown, both the third enclosure 900 and the frame 1310 include multiple printed strips K stacked in a direction away from the cover plate 800.

[0083] In summary, this application embodiment also provides a display module. Since the first colloidal filling portion is located between the first enclosure portion and the second enclosure portion, and the first enclosure portion and the second enclosure portion have poor fluidity, during the process of applying adhesive between the first enclosure portion and the second enclosure portion to form the first colloidal filling portion, it can effectively prevent the first colloidal filling portion with good fluidity from overflowing from both ends of the accommodating space after the panel bending portion is bent and before the first colloidal filling portion is completely cured. This would result in the first colloidal filling portion having a poor effect on strengthening the panel bending portion in the display panel, and thus a poor impact resistance effect of the panel bending portion, effectively improving the reliability of the display module.

[0084] This application also provides a display device, including: a mid-frame, and a display module connected to the mid-frame. The display module can be any of the display modules described above. The display device can be any product or component with display functionality, such as electronic paper, mobile phone, tablet computer, television, monitor, laptop computer, digital photo frame, or navigator.

[0085] It should be noted that the dimensions of layers and regions may be exaggerated in the accompanying drawings for clarity. Furthermore, it is understood that when an element or layer is referred to as being "on" another element or layer, it can be directly on the other element, or there may be intermediate layers. Additionally, it is understood that when an element or layer is referred to as being "below" another element or layer, it can be directly below the other element, or there may be more than one intermediate layer or element. Furthermore, it is also understood that when a layer or element is referred to as being "between" two layers or two elements, it can be the only layer between the two layers or two elements, or there may be more than one intermediate layer or element. Similar reference numerals throughout indicate similar elements.

[0086] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "multiple" refers to two or more unless otherwise expressly defined.

[0087] The above description is merely an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A display module, characterized in that, include: Display panel, first colloid filling part, first enclosure part, second enclosure part and multiple functional film layers; The display panel includes: a first panel portion and a second panel portion that are distributed opposite to each other, and a panel bending portion for connecting the first panel portion and the second panel portion; the first panel portion has a display surface; The plurality of functional film layers are stacked between the first panel portion and the second panel portion; and the plurality of functional film layers and the panel bending portion form an accommodating space; The first colloidal filling portion, the first enclosure portion, and the second enclosure portion are all located within the accommodating space; In a first direction parallel to the bending axis of the panel bending portion, the first colloid filling portion is located between the first enclosure portion and the second enclosure portion; the viscosity of both the first enclosure portion and the second enclosure portion is greater than the viscosity of the first colloid filling portion.

2. The display module according to claim 1, characterized in that, In the first direction, the two end faces of the first filling gel portion are in direct contact with the first enclosure portion and the second enclosure portion, respectively; and the side of the first enclosure portion away from the first filling gel portion is flush with one side of the panel bending portion in the first direction, and the side of the second enclosure portion away from the first filling gel portion is flush with the other side of the panel bending portion in the first direction.

3. The display module according to claim 1, characterized in that, The display module further includes: a baffle portion located within the accommodating space; the baffle portion is distributed in a second direction between at least a portion of the multiple functional film layers and the first colloidal filling portion; the second direction is perpendicular to the first direction and parallel to the display surface of the first panel portion; The baffle portion extends along the first direction and is in direct contact with at least the first colloid filling portion.

4. The display module according to claim 3, characterized in that, The plurality of functional membrane layers include: a first back film, a main support layer, a support column, and a second back film stacked together; the first back film is connected to the back side of the first panel portion, the main support layer is connected to the side of the first back film away from the first panel portion, the second back film is connected to the back side of the second panel portion, and the two sides of the support column are respectively connected to the main support layer and the second back film. In the second direction, the baffle portion is located on the side of the stacked main support layer and the support column facing the panel bending portion; in the third direction, the baffle portion is located between the first back film and the second back film; the third direction is perpendicular to the display surface of the first panel portion.

5. The display module according to claim 4, characterized in that, In the second direction, the baffle portion is in direct contact with the side of the main support layer facing the panel bend, and is also in direct contact with the side of the support column facing the panel bend. And / or, in the third direction, the opposite sides of the baffle portion are in direct contact with the first back film and the second back film.

6. The display module according to claim 4, characterized in that, The display module further includes: a second colloidal filling portion; the second colloidal filling portion is located between the baffle portion and the main support layer in the second direction, and in the second direction, the two opposite sides of the second colloidal filling portion are in direct contact with the baffle portion and the main support layer respectively; The deformation coefficient of the second colloidal filler is smaller than that of the first colloidal filler.

7. The display module according to claim 6, characterized in that, In the third direction, one side of the second colloidal filling portion is in direct contact with the first back film, while the other side is separated from the second back film.

8. The display module according to any one of claims 1-7, characterized in that, The display module further includes: a cover plate, a third enclosure, a fourth enclosure, and a third colloid filling part; The cover plate is located on the side of the first panel portion opposite to the second panel portion; the cover plate includes: a cover plate body covering the first panel portion, and a first protrusion connected to the cover plate body, the first protrusion being capable of covering the panel bending portion; The third and fourth enclosure portions are located on the side of the cover plate facing the display panel; in the first direction, the panel bending portion is located between the third and fourth enclosure portions, and the two end faces of the panel bending portion are in direct contact with the third and fourth enclosure portions respectively. In the first direction, the third colloid filling portion is located between the third enclosure portion and the fourth enclosure portion; and in the third direction, the third colloid filling portion is located between the first protrusion portion and the panel bending portion; The viscosity of the third enclosure and the viscosity of the fourth enclosure are both greater than the viscosity of the third colloidal filler.

9. The display module according to claim 8, characterized in that, The orthographic projection of the panel bending portion on the cover plate is located within the orthographic projection of the third colloidal filling portion on the cover plate.

10. The display module according to claim 8, characterized in that, The display module further includes: a protective colloid; the protective colloid is located on the back side of the panel bending portion, and the protective colloid is in direct contact with the third colloid filling portion; In the third direction, the heights of the third and fourth enclosure portions are both greater than or equal to the vertical distance between the midpoint of the bend in the panel and the cover plate. In the second direction, the minimum distance between the third enclosure portion and the side of the first protrusion away from the cover plate body is less than or equal to the minimum distance between the protective colloid and the side of the first protrusion away from the cover plate body; and the minimum distance between the fourth enclosure portion and the side of the first protrusion away from the cover plate body is less than or equal to the minimum distance between the protective colloid and the side of the first protrusion away from the cover plate body.

11. The display module according to claim 10, characterized in that, In the third direction, the maximum width of the third colloid filling part is less than or equal to the height of the third enclosure part, and less than or equal to the height of the fourth enclosure part.

12. The display module according to any one of claims 8-11, characterized in that, The display module further includes: a connecting adhesive portion located on the side of the second panel portion opposite to the first panel portion; the side of the connecting adhesive portion opposite to the second panel portion is connected to the middle frame; The orthographic projection of the connecting colloid portion on the cover plate is located within the orthographic projection of the second panel portion on the cover plate.

13. The display module according to claim 12, characterized in that, The connecting colloid portion includes: a colloid frame, and a fourth colloid filling portion located within the colloid frame; The viscosity of the glue frame is greater than the viscosity of the fourth colloid filling part.

14. The display module according to claim 13, characterized in that, At least one of the first enclosure, the second enclosure, the third enclosure, the fourth enclosure, and the plastic frame includes: a plurality of printed strips stacked in a direction away from the cover plate.

15. A display device, characterized in that, include: A mid-frame, and a display module connected to the mid-frame, wherein the display module is the display module according to any one of claims 1 to 14.

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