Display module and flexible display device

Abstract

The application provides a display module and a flexible display device, and relates to the technical field of display. The display module comprises a flexible display panel, a buffer structure layer arranged on one side of the flexible display panel, a polaroid arranged on the side of the flexible display panel away from the buffer structure layer, and an adhesive structure layer arranged on the side of the polaroid away from the flexible display panel. The adhesive structure layer comprises a first adhesive layer and a first support layer. The first adhesive layer comprises a first region, which is a region initially subjected to the adhesive pressure of an adhesive device when the adhesive structure layer is attached to the adhesive device. The first region is provided with the first support layer. The hardness of the first support layer is greater than that of the first adhesive layer. The side of the adhesive structure layer away from the flexible display panel and the side of the adhesive structure layer close to the flexible display panel are both adhesive.

Description

TECHNICAL FIELD

[0001] The present application relates to the display technical field, and in particular to a display module and a flexible display device. BACKGROUND

[0002] The flexible display device is a display device made of soft material and can be deformed and bent. Figure 1 As shown in the figure, the flexible display device includes a buffer layer 04, a flexible display panel 03, a polarizing sheet 02 and a cover plate (not shown in the figure) which are stacked in sequence, wherein the polarizing sheet 02 and the cover plate are bonded together through a shadowless adhesive layer to ensure the packaging of the flexible display device.

[0003] At present, when preparing the flexible display device, the polarizing sheet 02 is usually arranged on one side of the flexible display panel 03 in advance, and then the shadowless adhesive layer 01 is laid on the side of the polarizing sheet 02 away from the flexible display panel 03. Then, the roller 05 of the attaching device is pressed against the target area of the shadowless adhesive layer 01, and rolls from the target area to the edge of the shadowless adhesive layer 01, so as to adhere the shadowless adhesive layer 01 to the flexible display panel 03 with high reliability. Finally, the cover plate is covered on the shadowless adhesive layer 01.

[0004] However, since the roller 05 of the attaching device has a large impact force when pressed against the target area of the shadowless adhesive layer 01, and the buffer layer 04, the flexible display panel 03 and the polarizing sheet 02 are all flexible material layers, the flexible display panel 03 and the polarizing sheet 02 will be deformed to a certain extent. Further, the flexible display device has orange peel and film printing on the appearance, which affects the display effect of the flexible display device. SUMMARY

[0005] The present application provides a display module and a flexible display device, which are used to solve the problem that when the impact force of the roller of the attaching device pressed against the target area of the shadowless adhesive layer is large, the flexible display panel and the polarizing sheet will be deformed to a certain extent.

[0006] In a first aspect, the present application provides a display module, comprising:

[0007] a flexible display panel;

[0008] a buffer structure layer arranged on one side of the flexible display panel;

[0009] a polarizing sheet arranged on a side of the flexible display panel away from the buffer structure layer;

[0010] an adhesive structure layer arranged on a side of the polarizing sheet away from the flexible display panel;

[0011] The adhesive structure layer comprises a first adhesive layer and a first support layer, the first adhesive layer comprises a first region, the first region is a region initially subjected to the attaching pressure of the attaching device when the adhesive structure layer is attached by the attaching device, and the first region is provided with the first support layer; the hardness of the first support layer is greater than the hardness of the first adhesive layer, and the side of the adhesive structure layer away from the flexible display panel and the side close to the flexible display panel both have adhesion;

[0012] And / or, the buffer structure layer comprises a buffer layer and a second support layer, the buffer layer comprises a second region; the second region is a region initially subjected to the attaching pressure of the attaching device when the adhesive structure layer is attached by the attaching device, and the second support layer is arranged in the second region, and the hardness of the second support layer is greater than the hardness of the buffer layer.

[0013] In a possible implementation, the first adhesive layer comprises a first sub-adhesive layer and a second sub-adhesive layer, the first sub-adhesive layer is located at the side of the polarizer away from the flexible display panel;

[0014] The second sub-adhesive layer is arranged at the side of the first sub-adhesive layer away from the flexible display panel;

[0015] The spacing region between the first sub-adhesive layer and the second sub-adhesive layer comprises the first region, and the first support layer is filled in the spacing region.

[0016] In a possible implementation, the first region of the first adhesive layer comprises a first opening, the first support layer is located in the first opening, and the first support layer has adhesion.

[0017] In a possible implementation, the orthographic projection of the first support layer on the flexible display panel is a rectangle, and the distance from each short side of the rectangle to the nearest edge of the first adhesive layer is greater than 1 mm and less than 2 mm.

[0018] In a possible implementation, the first adhesive layer is provided with a plurality of spaced first openings, one first support layer is arranged in each first opening, and one of the first openings is located in the first region.

[0019] In a possible implementation, the first opening penetrates the first adhesive layer.

[0020] In a possible implementation, the first opening does not penetrate the first adhesive layer, and the first opening is located at the side of the first adhesive layer close to the flexible display panel.

[0021] In a possible implementation, the first opening does not penetrate the first adhesive layer, and the first opening is located at the side of the first adhesive layer away from the flexible display panel.

[0022] In a possible implementation, the second region of the buffer layer comprises a second opening, and the second support layer is arranged in the second opening.

[0023] In a possible implementation, the second opening penetrates the buffer layer.

[0024] Alternatively, the second opening does not penetrate the buffer layer, and the second opening is arranged on the side of the buffer layer close to the flexible display panel.

[0025] In a possible implementation, the buffer layer is provided with a plurality of spaced second openings, each of which is provided with a second support layer, and one of the second openings is located in the second region.

[0026] In a possible implementation, the buffer layer includes a first sub-buffer layer and a second sub-buffer layer, the first sub-buffer layer is arranged on the side of the flexible display panel away from the polarizer,

[0027] the second sub-buffer layer is arranged on the side of the first sub-buffer layer away from the flexible display panel;

[0028] the spacing region between the first sub-buffer layer and the second sub-buffer layer includes the second region, and the second support layer is filled in the spacing region.

[0029] In a second aspect, the present application also provides a flexible display device, including the display module provided in the first aspect.

[0030] The display module and the flexible display device provided by the present application have the following advantages. Since the first support layer is arranged in the first region of the bonding structure layer, and the first region is the region initially subjected to the attaching pressure of the attaching device when the bonding structure layer is attached to the device, and the hardness of the first support layer is greater than that of the first bonding layer, when the roller of the attaching device presses the first region of the bonding structure layer, the first support layer has greater resistance to deformation than the first bonding layer, and can attenuate the pressure of the roller of the attaching device. Furthermore, the flexible display panel and the polarizer located on the side of the bonding structure layer away from the roller of the attaching device will not be bent and deformed. In this way, the flexible display device will not have orange peel and film printing on the appearance, and the display effect of the flexible display device is not affected.

[0031] And / or, the second support layer is arranged in the second region of the buffer structure layer, and the second region is the region initially subjected to the attaching pressure of the attaching device, and the hardness of the second support layer is greater than that of the buffer layer. Therefore, when the roller of the attaching device presses the first region of the bonding structure layer, the second support layer has greater resistance to deformation than the buffer layer, and can provide support force for the flexible display panel and the polarizer located on the side of the bonding structure layer away from the roller of the attaching device. In this way, the flexible display panel and the polarizer located on the side of the buffer structure layer close to the roller of the attaching device will not be bent and deformed. In this way, the flexible display device will not have orange peel and film printing on the appearance, and the display effect of the flexible display device is not affected. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 A schematic diagram showing the deformation of the display module when it is pressed by the rollers of the attaching device;

[0034] Figure 2 One of the cross-sectional views of the display module provided in the embodiments of this application;

[0035] Figure 3 A second cross-sectional view of the display module provided in the embodiments of this application;

[0036] Figure 4 A third cross-sectional view of the display module provided in the embodiments of this application;

[0037] Figure 5 Fourth cross-sectional view of the display module provided in the embodiments of this application;

[0038] Figure 6 Fifth cross-sectional view of the display module provided in the embodiments of this application;

[0039] Figure 7 One of the top views of the display module provided in the embodiments of this application;

[0040] Figure 8 A second top view of the display module provided in the embodiments of this application;

[0041] Figure 9 This is a schematic diagram of the structure of the flexible circuit board stamping buffer layer provided in the embodiments of this application;

[0042] Figure 10 A cross-sectional view of a flexible display device provided in an embodiment of this application;

[0043] Figure 11 A top view of the display module provided in the embodiments of this application;

[0044] Figure 12 Sixth cross-sectional view of the display module provided in the embodiments of this application;

[0045] Figure 13 Seventh cross-sectional view of the display module provided in the embodiments of this application;

[0046] Figure 14FIG. 8 is a cross-sectional view of a display module according to an embodiment of the present disclosure;

[0047] Figure 15 FIG. 9 is a cross-sectional view of a display module according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0048] Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. It is to be understood, however, that the description is merely exemplary of the present disclosure, but not intended to limit the present disclosure. Also, in the following description, descriptions of well-known functions and constructions are omitted to avoid obscuring the concept of the present disclosure in unnecessary detail.

[0049] In the drawings, various structural diagrams according to embodiments of the present disclosure are illustrated. These diagrams are not drawn to scale in that certain details are exaggerated for the purpose of clarity, and others are omitted. The shapes of various regions, layers, and the relative sizes and positions of them shown in the drawings are merely exemplary, and can be varied in actual implementation due to manufacturing tolerances or technical limitations, and regions / layers having different shapes, sizes, and relative positions can be additionally designed by those skilled in the art as needed.

[0050] In the context of the present disclosure, when a layer / element is said to be located "on" another layer / element, the layer / element can be directly on the other layer / element, or an intervening layer / element can be present therebetween. In addition, if a layer / element is located "on" another layer / element in one orientation, it can be located "under" the other layer / element when the orientation is reversed.

[0051] At present, when a flexible display device is manufactured, a polarizing sheet is generally provided on one side of a flexible display panel in advance, and a shadowless adhesive layer is then laid on the side of the polarizing sheet away from the flexible display panel. Further, a roller of an attaching apparatus is pressed against a target region of the shadowless adhesive layer, and is rolled from the target region to the edge of the shadowless adhesive layer, so as to attach the shadowless adhesive layer to the flexible display panel. Since the force with which the roller of the attaching apparatus is pressed against the target region of the shadowless adhesive layer is large, and both the flexible display panel and the polarizing sheet are flexible material layers, the flexible display panel and the polarizing sheet are bent and deformed to some extent. Further, this causes orange peel and film printing to exist on the appearance of the flexible display device, which affects the display effect of the flexible display device.

[0052] Based on the above technical problem, the inventive concept of the present disclosure is to provide a first support layer in a first region of a bonding structure layer, and the first region is a region initially receiving an attaching pressure of an attaching apparatus when the bonding structure layer is attached by the attaching apparatus, and / or to provide a second support layer in a second region of a buffer structure layer, and the second region is a region initially receiving an attaching pressure of an attaching apparatus.

[0053] The first support layer has a better deformation resistance than the first adhesive layer, and can attenuate the pressure of the roller of the attached device. In this way, the flexible display panel and the polarizer on the side of the adhesive structure layer away from the roller of the attached device will not be bent and deformed. Thus, the flexible display device will not have orange peel and film printing on the appearance, and the display effect of the flexible display device will not be affected.

[0054] In addition, the second support layer has a better deformation resistance than the buffer layer, and can provide support force for the flexible display panel and the polarizer on the side of the adhesive structure layer away from the roller of the attached device. In this way, the flexible display panel and the polarizer on the side of the buffer structure layer close to the roller of the attached device will not be bent and deformed. Thus, the flexible display device will not have orange peel and film printing on the appearance, and the display effect of the flexible display device will not be affected.

[0055] In the following, the technical solutions of the present application and how the technical solutions of the present application solve the above technical problems will be described in detail with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of the present application will be described below with reference to the accompanying drawings.

[0056] As shown in Figure 2 The display module provided by the embodiments of the present application includes a buffer structure layer 103, a flexible display panel 104, a polarizer 105, an adhesive structure layer 106, and a protective cover plate (not shown in the figure). Among them,

[0057] The flexible display panel 104 may, for example, be an OLED (Organic Light-Emitting Diode) panel, a QLED (Quantum Dot Light Emitting Diodes) panel, a Micro OLED panel, etc., and the embodiments of the present application do not limit this. For example, the substrate material of the flexible display panel 104 can include polyimide (Polyimide, abbreviated as PI), polyethylene terephthalate (Polyethylene Terephthalate, abbreviated as PET), and polyethylene naphthalate (Polyethylene naphthalate, abbreviated as PEN), etc., and the embodiments of the present application do not limit this.

[0058] The buffer structure layer 103 is arranged on one side of the flexible display panel 104. The buffer structure layer 103 can include but is not limited to a SiO layer or a SiN layer.

[0059] The polarizer 105 is arranged on the side of the flexible display panel 104 away from the buffer structure layer 103. The functions of the polarizer 105 include: 1. controlling the polarization direction of the light emitted by the flexible display panel 104 and dissipating surface reflection; 2. increasing the viewing angle of the flexible display panel 104 and absorbing polarized light in the transmitted light whose vibration direction is parallel to the transmission axis of the polarizer 105; 3. producing light and shade contrast, so that the flexible display panel 104 produces a display image. It should be noted that the polarizer 105 is also flexible and can easily bend when encountering a large pressure.

[0060] The adhesive structure layer 106 is arranged on the side of the polarizer 105 away from the flexible display panel 104, and the side of the adhesive structure layer 106 away from the flexible display panel 104 and the side of the adhesive structure layer 106 close to the flexible display panel 104 both have adhesion. Generally, the adhesive structure layer 106 can be laid on the polarizer 105 first, and then the first area 102 of the adhesive structure layer 106 can be pressed by the roller 108 of the attaching device, and the roller 108 can be rolled from the first area 102 to the edge of the adhesive structure layer 106, so as to improve the reliability of the adhesive structure layer 106 adhered to the polarizer 105.

[0061] The protective cover plate is arranged on the side of the adhesive structure layer 106 away from the flexible display panel 104. The material of the protective cover plate can include but is not limited to polyethylene terephthalate, polymethyl methacrylate, or ultra-thin glass, etc.

[0062] It can be understood that since the side of the adhesive structure layer 106 away from the flexible display panel 104 and the side of the adhesive structure layer 106 close to the flexible display panel 104 both have adhesion, the adhesive structure layer 106 is used to adhere the polarizer 105 and the protective cover plate together to ensure the sealing of the display module. The protective cover plate is used to encapsulate the display module to isolate the air and moisture from the outside, so as to avoid the adhesive structure layer 106, the polarizer 105, the flexible display panel 104, and the buffer structure layer 103 arranged in sequence from being eroded by the air and moisture from the outside.

[0063] The adhesive structure layer 106 includes the first adhesive layer 101 and the first support layer 202, and the first adhesive layer 101 includes the first area 102. The first area 102 includes an area initially subjected to the attaching pressure of the attaching device when the adhesive structure layer 106 is attached by the attaching device. The first area 102 is provided with the first support layer 202, and the hardness of the first support layer 202 is greater than the hardness of the first adhesive layer 101. The width of the first support layer 202 can be greater than or equal to 5 mm, for example, the width of the first support layer can be 5 mm, 5.5 mm, 6 mm, 7 mm, and 7.5 mm, etc., which are not limited herein.

[0064] In summary, this application provides a display module where a first support layer 202 is provided in the first region 102 of the adhesive structure layer 106, and the hardness of the first support layer 202 is greater than that of the first adhesive layer 101. Therefore, when the roller 108 of the application device presses against the first region 102 of the adhesive structure layer 106, the first support layer 202 has greater resistance to deformation than the first adhesive layer 101, which can reduce the pressure of the roller 108. Consequently, the flexible display panel 104 and polarizer 105 located on the side of the adhesive structure layer 106 away from the roller 108 of the application device will not bend or deform. Thus, the flexible display device will not have orange peel texture or film marks on its appearance, avoiding any impact on the display effect of the flexible display device.

[0065] It should be noted that the specific implementation of the adhesive structure layer 106 includes, but is not limited to, the following methods:

[0066] The first type: such as Figure 2 As shown in (a), the first adhesive layer 101 includes a first sub-adhesive layer 201 and a second sub-adhesive layer 202. The first sub-adhesive layer 201 is located on the side of the polarizer 105 away from the flexible display panel 104. The second sub-adhesive layer 202 is spaced apart on the side of the first sub-adhesive layer 201 away from the flexible display panel 104. The gap between the first sub-adhesive layer 201 and the second sub-adhesive layer 202 includes a first region 102, and the first support layer 202 fills the gap region. That is, the area of ​​the first support layer 202 is equal to the area of ​​the first sub-adhesive layer 201 and the area of ​​the second sub-adhesive layer 202.

[0067] Understandably, the first sub-adhesive layer 201 is used to bond the polarizer 105, and the second sub-adhesive layer 202 is used to bond the protective cover plate, so that the side of the adhesive structure layer 106 away from the flexible display panel 104 and the side close to the flexible display panel 104 are both adhesive.

[0068] The first sub-adhesive layer 201 and the second sub-adhesive layer 202 can both be, but are not limited to, UV-type optical adhesive layers (Optically Clear Adhesive, OCA). The first support layer 202 can be, but is not limited to, a glass layer or a thermosetting OCA layer. For example, the thickness of the first support layer 202 is greater than 25 μm; for example, the thickness of the first support layer 202 is 25 μm, 35 μm, or 50 μm, and is not limited here. Furthermore, the thickness of both the first sub-adhesive layer 201 and the second sub-adhesive layer 202 can be, but is not limited to, 20 μm, 23 μm, 25 μm, 28 μm, and 30 μm, etc., and is not limited here. It is understood that when the thickness of the first support layer 202 is greater than or equal to half the thickness of the adhesive structure layer 106, the adhesive structure layer 106 has high resistance to deformation.

[0069] Understandably, in the corresponding embodiment of (a) in Figure 2 , since the interval region between the first sub-adhesive layer 201 and the second sub-adhesive layer 202 is filled with the first support layer 202, and the interval region includes the first region 102, the first region 102 is provided with the first support layer 202. Again, since the hardness of the first support layer 202 is greater than the hardness of the first sub-adhesive layer 201, as shown in (b) in Figure 2 , when the roller 108 of the attaching device is pressed against the first region 102 of the adhesive structure layer 106, the first support layer 202 has greater resistance to deformation relative to the first sub-adhesive layer 201 and the second sub-adhesive layer 202, etc., and can attenuate the pressure of the roller 108 of the attaching device. Furthermore, the flexible display panel 104 and the polarizer 105 located on the side of the adhesive structure layer 106 away from the roller 108 of the attaching device will not appear to be bent and deformed. In this way, there will also be no orange peel and film printing on the appearance of the flexible display device, avoiding the display effect of the flexible display device from being affected.

[0070] Second: as shown in (a) in Figure 3 , the first region 102 of the first adhesive layer 101 includes a first opening 204, the first support layer 202 is located in the first opening 204, and the first support layer 202 has adhesion

[0071] , the first adhesive layer 101 can be but is not limited to a UV type optical adhesive layer, and the first support layer 202 can be but is not limited to a thermosetting optical adhesive layer. Among them, the thermosetting optical adhesive layer is obtained by heating the optical adhesive layer to a target temperature after softening, at which time the optical adhesive layer undergoes a chemical reaction to harden and become a thermosetting optical adhesive layer. Therefore, the hardness of the thermosetting optical adhesive layer is high. In addition, the elasticity of the thermosetting optical adhesive layer is greater than that of the UV type optical adhesive layer, so that the thermosetting optical adhesive layer has greater resistance to deformation relative to the UV type optical adhesive layer.

[0072] In the corresponding embodiment of (a) in Figure 3 , the first support layer 202 with adhesion is arranged in the first opening 204 of the first region 102. In this way, the side of the adhesive structure layer 106 away from the flexible display panel 104 and the side of the adhesive structure layer 106 close to the flexible display panel 104 both have adhesion.

[0073] In the corresponding embodiment of (a) in Figure 3As shown in (b) of FIG. 1, when the roller 108 of the attaching device presses the first region 102 of the adhesive structure layer 106, the first support layer 202 located in the first opening 204 of the first region 102 has a better anti-deformation ability relative to the first adhesive layer 101 and the like, and can attenuate the pressure of the roller 108 of the attaching device. Further, the flexible display panel 104 and the polarizer 105 located on the side of the adhesive structure layer 106 away from the roller 108 of the attaching device will not be bent and deformed. In this way, the orange peel and film print will not exist on the appearance of the flexible display device, and the display effect of the flexible display device is avoided from being affected.

[0074] Fourthly, as shown in (d) of FIG. 1, the first opening 204 penetrates the first adhesive layer 101, and the cross section of the first support layer 202 is rectangular. Figure 3

[0075] Fifthly, as shown in (e) of FIG. 1, the first opening 204 does not penetrate the first adhesive layer 101, the cross section of the first support layer 202 is rectangular, and the first opening 204 is located on the side of the first adhesive layer 101 close to the flexible display panel 104. Figure 4

[0076] Sixthly, as shown in (f) of FIG. 1, the first opening 204 does not penetrate the first adhesive layer 101, the cross section of the first support layer 202 is rectangular, and the first opening 204 is located on the side of the first adhesive layer 101 away from the flexible display panel 104. Figure 5

[0077] As shown in (a) of FIG. 1, the first opening 204 penetrates the first adhesive layer 101, and the cross section of the first support layer 202 is trapezoidal. Figure 6

[0078] Seventhly, as shown in (b) of FIG. 1, the first opening 204 does not penetrate the first adhesive layer 101, the cross section of the first support layer 202 is trapezoidal, and the first opening 204 is located on the side of the first adhesive layer 101 close to the flexible display panel 104. Figure 6 Eighthly, as shown in (c) of FIG. 1, the first opening 204 does not penetrate the first adhesive layer 101, the cross section of the first support layer 202 is trapezoidal, and the first opening 204 is located on the side of the first adhesive layer 101 away from the flexible display panel 104.

[0079] Figure 6 Further, as shown in (d) of FIG. 1, the first opening 204 penetrates the first adhesive layer 101, and the cross section of the first support layer 202 is rectangular.

[0080] Figure 7 ​​​​​​As shown, the first support layer 202 has a rectangular orthographic projection on the flexible display panel 104, and the distance from each short side of the rectangle to the nearest edge of the first adhesive layer 101 is greater than 1 mm and less than 2 mm, for example, the distance from each short side of the rectangle to the nearest edge of the first adhesive layer 101 is 1.1 mm, 1.3 mm, 1.5 mm, 1.7 mm, 1.9 mm, etc., which are not limited herein.

[0081] In this way, the space for inkjet can be reserved on each short side to the nearest edge of the first adhesive layer 101, and when the inkjet is performed between each short side to the nearest edge of the first adhesive layer 101, the protective cover plate will not cause light leakage after covering the adhesive structure layer 106.

[0082] The ninth: as Figure 8 As shown, the first adhesive layer 101 is provided with a plurality of spaced first openings 204, and each first opening 204 is provided with a first support layer 202, and the first support layer 202 has adhesion, and one of the first openings 204 is located in the first area 102. For example, the interval between each two spaced first openings 204 is greater than 15 um ， For example, the interval between each two spaced first openings 204 is 16 um, 17 um, 18 um, 19 um, 20 um, etc., which are not limited herein.

[0083] Similarly, when the roller 108 of the attaching device is pressed against the first area 102 of the adhesive structure layer 106, the first support layer 202 located in the first opening 204 of the first area 102 has better deformation resistance relative to the first adhesive layer 101, etc., which can attenuate the pressure of the roller 108 of the attaching device. Further, the flexible display panel 104 and the polarizing plate 105 located on the side of the adhesive structure layer 106 away from the roller 108 of the attaching device will not appear bending deformation. In this way, the flexible display device will not have orange peel and film printing on the appearance, avoiding the display effect of the flexible display device from being affected.

[0084] In addition, during the preparation of the display module, when the polarizing plate 105 and the buffer structure layer 103 are formed on both sides of the display panel 104, and the adhesive structure layer 106 is formed on the side of the polarizing plate 105 away from the display panel 104, as Figure 9As shown, the flexible display device is obtained by stamping the flexible circuit board carrying the heat dissipation layer on one side of the buffer structure layer 103, and the flexible display panel 104 and the polarizer 105 are subjected to great pressure. Since the first support layer 202 is arranged at intervals and has better deformation resistance, the flexible display panel 104 and the polarizer 105 can be supported, and the supporting area is large. Thus, the flexible display panel 104 and the polarizer 105 on the side of the adhesive structure layer 106 away from the roller 108 of the attaching device do not deform.

[0085] Exemplarily, after the flexible circuit board 108 carrying the heat dissipation layer 107 is stamped on one side of the buffer structure layer 103, a cross-sectional view of the obtained flexible display device can be as shown in Figure 10 Figure 10 In the embodiment, the heat dissipation layer 107 is arranged on the side of the buffer structure layer 103 away from the flexible display panel 104. The heat dissipation layer 107 can be a super clean foam (SCF) composite layer. The heat dissipation layer 107 is used to dissipate heat for the flexible circuit board 108, so as to avoid failure of the flexible circuit board 108 due to high temperature.

[0086] The flexible circuit board 108 is arranged on the side of the heat dissipation layer 107 away from the flexible display panel 104. The flexible circuit board 108 is electrically connected to the flexible display panel 104, and is used to control the opening, closing and data display of the flexible display panel 104.

[0087] In addition, as shown in Figure 2 when the first adhesive layer 101 includes the first sub-adhesive layer 201 and the second sub-adhesive layer 202, and the first support layer 202 is filled in the interval region between the first sub-adhesive layer 201 and the second sub-adhesive layer 202, if the flexible circuit board 108 carrying the heat dissipation layer 107 is stamped on one side of the buffer structure layer 103, since the first support layer 202 has better deformation resistance, the flexible display panel 104 and the polarizer 105 can be supported, and the supporting area is large. Thus, the flexible display panel 104 and the polarizer 105 on the side of the adhesive structure layer 106 away from the roller 108 of the attaching device do not deform.

[0088] As shown in Figure 11 ​As shown in the figure, this application embodiment also provides another display module, including a buffer structure layer 103, a flexible display panel 104, a polarizer 105, an adhesive structure layer 106, and a protective cover plate (not shown in the figure). The buffer structure layer 103 is disposed on one side of the flexible display panel 104. The polarizer 105 is disposed on the side of the flexible display panel 104 away from the buffer structure layer 103. The adhesive structure layer 106 is disposed on the side of the polarizer 105 away from the flexible display panel 104, and both the side of the adhesive structure layer 106 away from and near the flexible display panel 104 are adhesive. The protective cover plate is disposed on the side of the adhesive structure layer 106 away from the flexible display panel 104.

[0089] The buffer structure layer 103 includes a buffer layer 401 and a second support layer 402. The buffer layer 401 includes a second region 403. The second region 403 includes the region initially subjected to the bonding pressure of the bonding device when the adhesive structure layer 106 is bonded by the bonding device. The second support layer 402 is disposed within the second region 403, and the hardness of the second support layer 402 is greater than that of the buffer layer 401. Figure 12 As shown, the length of the second support layer 402 is equal to the width of the display panel 104.

[0090] Specifically, still as Figure 11 As shown, the second region 403 of the buffer layer 401 includes a second opening 404 that penetrates the buffer layer 401, and a second support layer 402 is disposed within the second opening 404. Exemplarily, the second support layer 402 may be, but is not limited to, a glass layer, a stainless steel layer, or a carbon fiber layer. The orthographic projection of the second support layer 402 onto the display panel 104 may be rectangular or trapezoidal, and is not limited thereto.

[0091] In summary, the display module provided in this application embodiment has a second support layer 402 disposed in the second region 403 of the buffer structure layer. Since the second region 403 is the region initially subjected to the bonding pressure of the bonding device, the hardness of the second support layer 402 is greater than that of the buffer layer 401. Therefore, when the roller 108 of the bonding device presses against the first region 102 of the adhesive structure layer 106, the second support layer 402 has greater resistance to deformation than the buffer layer 401, thus providing support for the flexible display panel 104 and polarizer 105 located on the side of the adhesive structure layer 106 away from the roller 108 of the bonding device. In this way, as before... Figure 11 As shown, the flexible display panel 104 and polarizer 105 located on the side of the buffer structure layer 103 near the roller 108 of the attachment device are also less prone to bending deformation. Thus, the flexible display device will not exhibit orange peel texture or film marks, preventing any impact on its display performance.

[0092] Alternatively, the buffer structure layer 103 provided by the embodiments of the present application can also include, but is not limited to, the following implementations:

[0093] The first implementation is shown in FIG. 4A. The second opening 404 does not penetrate the buffer layer 401, and the second opening 404 is arranged on the side of the buffer layer 401 close to the flexible display panel 104. Exemplarily, the thickness of the buffer structure layer 103 can be 50 um, and the thickness of the first support layer 202 can be 25 um, 35 um or 50 um, which is not limited herein. It should be noted that when the thickness of the second support layer 402 is greater than or equal to one half of the thickness of the adhesive structure layer 106, the buffer structure layer 103 has high deformation resistance. Figure 13 The second implementation is shown in FIG. 4B. The buffer layer 401 is provided with a plurality of spaced second openings 404, each of which is provided with a second support layer 402, and one of the second openings 404 is located in the second area 403.

[0094] Figure 14 The third implementation is shown in FIG. 4C. The buffer layer 401 includes a first sub-buffer layer 501 and a second sub-buffer layer 502. The first sub-buffer layer 501 is arranged on the side of the flexible display panel 104 away from the polarizer 105, and the second sub-buffer layer 502 is arranged on the side of the first sub-buffer layer 501 away from the flexible display panel 104. The interval area between the first sub-buffer layer 501 and the second sub-buffer layer 502 includes the second area 403, and the second support layer 402 is filled in the interval area.

[0095] In this way, when the polarizer 105 and the buffer layer 401 are formed on both sides of the display panel 104, and the adhesive structure layer 106 is formed on the side of the polarizer 105 away from the display panel 104, the flexible circuit board 108 carrying the heat dissipation layer 107 needs to be punched on one side of the buffer layer 401, at this time, the flexible display panel 104 and the polarizer 105 are subjected to great pressure. Since the plurality of spaced second support layers 402 have high deformation resistance and support a large area, they can attenuate the pressure from the flexible circuit board 108, so that the flexible display panel 104 and the polarizer 105 on the side of the adhesive structure layer 106 away from the roller 108 of the attached device do not deform.

[0096] The fourth implementation is shown in FIG. 4D. The buffer layer 401 includes a first sub-buffer layer 501 and a second sub-buffer layer 502. The first sub-buffer layer 501 is arranged on the side of the flexible display panel 104 away from the polarizer 105, and the second sub-buffer layer 502 is arranged on the side of the first sub-buffer layer 501 away from the flexible display panel 104. The interval area between the first sub-buffer layer 501 and the second sub-buffer layer 502 includes the second area 403, and the second support layer 402 is filled in the interval area. Figure 15 Figure 15 The beneficial effects of the corresponding embodiments are the same as those of the corresponding embodiments, which are not repeated here. Figure 14 The beneficial effects of the corresponding embodiments are the same as those of the corresponding embodiments, which are not repeated here.

[0097] ​​In addition, the embodiment of the present application further provides a flexible display device, comprising the display module provided by any of the above embodiments. The flexible display device can include, but is not limited to, a folding mobile phone, a folding tablet and the like.

[0098] In the above description, the technical details such as the patterning of each layer are not described in detail. However, those skilled in the art should understand that the layers, regions and the like with desired shapes can be formed by various technical means. In addition, those skilled in the art can also design methods different from the above described methods to form the same structure. In addition, although each embodiment is described above, this does not mean that the measures in each embodiment cannot be used advantageously in combination.

[0099] Although the preferred embodiments of the present application have been described, those skilled in the art can make further changes and modifications to the embodiments once they know the basic inventive concept. Therefore, the appended claims are intended to be interpreted as including all the preferred embodiments and all the changes and modifications falling within the scope of the present application.

[0100] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these modifications and variations.

Claims

1. A display module, characterized in that, The display module includes: Flexible display panel; A buffer structure layer is disposed on one side of the flexible display panel; A polarizer is disposed on the side of the flexible display panel away from the buffer structure layer; An adhesive structural layer is disposed on the side of the polarizer away from the flexible display panel; The adhesive structure layer includes a first adhesive layer and a first support layer. The first adhesive layer includes a first region, which is the region initially subjected to the application pressure of the application device when the adhesive structure layer is applied by the application device. The first support layer is disposed in the first region. The hardness of the first support layer is greater than that of the first adhesive layer, and both the side of the adhesive structure layer away from the flexible display panel and the side closer to the flexible display panel are adhesive. The first region of the first adhesive layer includes a first opening, and the first support layer is located in the first opening and is adhesive.

2. The display module according to claim 1, characterized in that, The first adhesive layer includes a first sub-adhesive layer and a second sub-adhesive layer, wherein the first sub-adhesive layer is located on the side of the polarizer away from the flexible display panel; The second sub-adhesive layer is disposed at a distance from the first sub-adhesive layer on the side away from the flexible display panel; The gap region between the first sub-adhesive layer and the second sub-adhesive layer includes the first region, and the first support layer fills the gap region.

3. The display module according to claim 1, characterized in that, The orthographic projection of the first support layer onto the flexible display panel is a rectangle, and the distance from each short side of the rectangle to the nearest edge of the first adhesive layer is greater than 1 mm and less than 2 mm.

4. The display module according to claim 3, characterized in that, The first adhesive layer has a plurality of spaced first openings, each first opening contains a first support layer, and one of the first openings is located in the first region.

5. The display module according to claim 4, characterized in that, The first opening penetrates the first adhesive layer.

6. The display module according to claim 4, characterized in that, The first opening does not penetrate the first adhesive layer, and the first opening is located on the side of the first adhesive layer closer to the flexible display panel.

7. The display module according to claim 4, characterized in that, The first opening does not penetrate the first adhesive layer, and the first opening is located on the side of the first adhesive layer away from the flexible display panel.

8. The display module according to claim 7, characterized in that, The buffer structure layer includes a buffer layer and a second support layer. The buffer layer includes a second region. The second region is the region initially subjected to the adhesion pressure of the adhesion device when the adhesive structure layer is adhered by the adhesion device. The second support layer is disposed in the second region, and the hardness of the second support layer is greater than that of the buffer layer.

9. The display module according to claim 8, characterized in that, The second region of the buffer layer includes a second opening, and the second support layer is disposed within the second opening.

10. The display module according to claim 9, characterized in that, The second opening penetrates the buffer layer; Alternatively, the second opening may not penetrate the buffer layer, but may be located on the side of the buffer layer closer to the flexible display panel.

11. The display module according to claim 10, characterized in that, The buffer layer has multiple spaced second openings, each second opening is provided with a second support layer, and one of the second openings is located in the second region.

12. The display module according to claim 8, characterized in that, The buffer layer includes a first sub-buffer layer and a second sub-buffer layer, wherein the first sub-buffer layer is disposed on the side of the flexible display panel away from the polarizer. The second sub-buffer layer is spaced apart from the first sub-buffer layer on the side away from the flexible display panel; The gap between the first sub-buffer layer and the second sub-buffer layer includes the second region, and the second support layer fills the gap.

13. A flexible display device, characterized in that, Includes the display module described in any one of claims 1-12.

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