Display module and display device thereof

Abstract

The embodiment of the utility model provides a display module and a display device thereof, relates to the technical field of display, and aims to reduce a frame of the display device. The display module comprises a display panel, bending glue and blocking glue. The display panel comprises a main body part, a bending part and a binding part, and the bending part is located between the main body part and the binding part; the bending part can be bent towards the back side of the main body part along a bending shaft extending in the first direction, so that the binding part is bent to the back side of the main body part. The bending part comprises a first transition area, a second transition area and a bending area located between the first transition area and the second transition area, and the first transition area is adjacent to the main body part. The bending glue covers the bending area. The blocking glue comprises first blocking glue, and the first blocking glue is located between the bending glue and the display area. And in the second direction, the length of the first blocking glue is less than or equal to 240 microns. The second direction is perpendicular to the first direction and is parallel to the main body part. The display module is used for the display device.

Description

Technical Field

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

[0002] With the rapid development of display technology, display technologies such as Liquid Crystal Display (LCD), Organic Light Emitting Display (OLED), Quantum Dot Light Emitting Display (QLED) and Mini / Micro Light Emitting Display (MLED) have been widely used in people's daily lives. For example, smart phones, wearable watches, televisions, laptops and car displays have gradually spread throughout people's lives. At present, how to reduce the border of the display device and increase the screen-to-body ratio of the display device has always been the direction of research and development and key breakthroughs in display technology. Utility Model Content

[0003] The present disclosure provides a display module and a display device thereof, so as to reduce the frame of the display device and improve the screen-to-body ratio of the display device.

[0004] On the one hand, a display module is provided. The display module includes a display panel, a bending glue and a blocking glue. The display panel has a display side and a back side arranged opposite to each other. The display panel includes a main body, a bending portion and a binding portion connected in sequence, and the bending portion is located between the main body and the binding portion; the main body has a display area; the bending portion can be bent toward the back side of the main body along a bending axis extending in a first direction, so that the binding portion is bent to the back side of the main body. The bending portion includes a first transition zone, a second transition zone and a bending zone located between the first transition zone and the second transition zone, and the first transition zone is adjacent to the main body.

[0005] The bending glue is arranged on the display side of the display panel and covers the bending area. The blocking glue is arranged on the display side of the display panel and is connected to the bending glue. The blocking glue includes a first blocking glue, and the first blocking glue is located between the bending glue and the display area. Moreover, along the second direction, the length of the first blocking glue is less than or equal to 240 μm. The second direction is perpendicular to the first direction and parallel to the main body.

[0006] Compared with the related art, the display module provided by the embodiment of the present disclosure has a reduced distance between the top and bottom ends of the first barrier adhesive on the side away from the bending adhesive, so that the total length of the first barrier adhesive and the bending adhesive in the second direction can be reduced by at least 230μm. In this way, the length of the frame of the display device corresponding to the bound circuit board in the second direction can be reduced by at least 230μm, thereby achieving the purpose of reducing the frame of the display device and improving the screen-to-body ratio of the display device.

[0007] In some embodiments, the blocking adhesive further includes a second blocking adhesive, and the bending adhesive is located between the first blocking adhesive and the second blocking adhesive; and, along the second direction, a length of the second blocking adhesive is less than or equal to 240 μm.

[0008] In some embodiments, along a third direction, the thickness of the blocking adhesive is greater than or equal to the thickness of the bending adhesive; and the third direction is perpendicular to the main body.

[0009] In some embodiments, along the third direction, the thickness of the blocking adhesive is 0 μm to 40 μm greater than the thickness of the bending adhesive.

[0010] In some embodiments, along a third direction, a ratio of a thickness of the bending adhesive to a thickness of the blocking adhesive is 1 to 1.02; and the third direction is perpendicular to the main body.

[0011] In some embodiments, the thickness of the blocking adhesive is 30 μm to 70 μm; and / or the thickness of the bending adhesive is 30 μm to 70 μm.

[0012] In some embodiments, along the second direction, a distance between a top end and a bottom end of a side of the blocking adhesive away from the bending adhesive is less than or equal to 120 μm.

[0013] In some embodiments, the surface energy of the barrier adhesive is greater than the surface energy of the bending adhesive.

[0014] In some embodiments, the surface energy of the blocking adhesive is greater than the surface energy of the film layer in contact with the blocking adhesive in the display panel; and / or the surface energy of the bending adhesive is less than the surface energy of the film layer in contact with the bending adhesive in the display panel.

[0015] In some embodiments, the display module further comprises a cover plate and an anti-reflection layer. The cover plate is disposed on the display side of the display panel and covers the main body. The anti-reflection layer is disposed between the main body of the display panel and the cover plate; and the first barrier adhesive is located between the anti-reflection layer and the bending adhesive.

[0016] In another aspect, a display device is provided, comprising a display module and a housing as described in any of the above embodiments, wherein the display module is disposed in the housing.

[0017] The beneficial effects of the display device provided by the embodiment of the present disclosure are the same as the beneficial effects of the display module provided by the above technical solution, and will not be elaborated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the present disclosure, the following briefly introduces the drawings required to be used in some embodiments of the present disclosure. Obviously, the drawings described below are only drawings of some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can also be obtained based on these drawings. In addition, the drawings described below can be regarded as schematic diagrams, and are not limitations on the actual size of the product involved in the embodiments of the present disclosure, the actual process of the method, the actual timing of the signal, etc.

[0019] Figure 1 is a structural diagram of a display device according to some embodiments;

[0020] Figure 2 is a structural diagram of another display device according to some embodiments;

[0021] Figure 3 for Figure 1 A cross-sectional view along section line CC';

[0022] Figure 4 is a top view of a display panel of a display module in an unfolded state according to some embodiments;

[0023] Figure 5 for Figure 4 A sectional view along section line DD';

[0024] Figure 6 for Figure 5 The structure diagram of the display panel in the display module after being bent;

[0025] Figure 7 for Figure 4 Another cross-sectional view along the section line DD';

[0026] Figure 8 for Figure 7 The structure diagram of the display panel in the display module after being bent;

[0027] Fig. 9 is a structural diagram of a support assembly of a display module according to some embodiments;

[0028] Fig.10 is a cross-sectional view of a display panel according to some embodiments;

[0029] Figure 11 to Figure 13 is a flow chart of a method for preparing a display module according to some embodiments;

[0030] Figure 14 to Figure 16 FIG. 1 is a diagram showing the steps of a method for preparing a display module according to some embodiments. DETAILED DESCRIPTION

[0031] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in some embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments provided by the present disclosure, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present disclosure.

[0032] Unless the context requires otherwise, throughout the specification and claims, the term "comprise" and other forms thereof, such as the third person singular form "comprises" and the present participle form "comprising", are to be interpreted as open, inclusive, that is, "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "example", "specific example" or "some examples" and the like are intended to indicate that specific features, structures, materials or characteristics associated with the embodiment or example are included in at least one embodiment or example of the present disclosure. The schematic representation of the above terms does not necessarily refer to the same embodiment or example. In addition, the specific features, structures, materials or characteristics may be included in any one or more embodiments or examples in any appropriate manner.

[0033] Terms such as "first" and "second" are used herein to describe various elements, but these elements should not be limited by these terms. These terms are only used to distinguish one component from other components. For example, an element referred to as a first element in one embodiment can be referred to as a second element in another embodiment without departing from the scope of the appended claims. Unless otherwise mentioned, terms in the singular may include plural forms.

[0034] When describing some embodiments, the term "connection" and its derivative expressions may be used. The term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0035] “At least one of A, B, and C” has the same meaning as “at least one of A, B, or C” and both include the following combinations of A, B, and C: A only, B only, C only, the combination of A and B, the combination of A and C, the combination of B and C, and the combination of A, B, and C.

[0036] “A and / or B” includes the following three combinations: A only, B only, and a combination of A and B.

[0037] The use of "adapted to" or "configured to" herein is meant to be open and inclusive language that does not exclude devices adapted or configured to perform additional tasks or steps.

[0038] As used herein, "about" or "approximately" includes the stated value and means within an acceptable range of deviation for the particular value as determined by one of ordinary skill in the art, taking into account the measurement in question and the errors associated with the measurement of the particular quantity (i.e., the limitations of the measurement system). For example, "about" can mean within one or more standard deviations, or within ±30%, ±20%, ±10%, ±5% of the stated value.

[0039] As used herein, "parallel", "perpendicular", and "equal" include the situations described and situations similar to the situations described, and the range of the similar situations is within the acceptable deviation range, wherein the acceptable deviation range is determined by a person of ordinary skill in the art taking into account the measurement in question and the errors associated with the measurement of a particular quantity (i.e., the limitations of the measurement system). For example, "parallel" includes absolute parallelism and approximate parallelism, wherein the acceptable deviation range of approximate parallelism may be, for example, a deviation within 5°; "perpendicular" includes absolute perpendicularity and approximate perpendicularity, wherein the acceptable deviation range of approximate perpendicularity may also be, for example, a deviation within 5°. "Equal" includes absolute equality and approximate equality, wherein the acceptable deviation range of approximate equality may be, for example, the difference between the two equalities is less than or equal to 5% of either one.

[0040] It will be understood that when a layer or an element is referred to as being on another layer or substrate, it can be directly on the other layer or substrate, or intervening layers may be present between the layer or element and the other layer or substrate.

[0041] Exemplary embodiments are described herein with reference to cross-sectional views and / or plan views that are idealized exemplary drawings. In the drawings, the thickness of the layers and the area of ​​the regions are exaggerated for clarity. Therefore, variations in the shapes relative to the drawings due to, for example, manufacturing techniques and / or tolerances are conceivable. Therefore, the exemplary embodiments should not be interpreted as being limited to the shapes of the regions shown herein, but include shape deviations due to, for example, manufacturing. For example, an etched region shown as a rectangle will typically have curved features. Therefore, the regions shown in the drawings are schematic in nature, and their shapes are not intended to illustrate the actual shapes of the regions of the device, and are not intended to limit the scope of the exemplary embodiments.

[0042] In this specification, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as those commonly understood by ordinary technicians in the field to which the utility model belongs. It will be further understood that, unless explicitly defined herein, terms (such as terms defined in a general dictionary) should be interpreted as having a meaning consistent with their meaning in the context of the relevant field, and should not be interpreted as an ideal or overly formal meaning.

[0043] In the present specification, when a component (or region, layer, part) is referred to as “coating” another component, it can directly coat the other component or an intervening third component may also be present.

[0044] In the present disclosure, terms such as "lower", "below", "above" and "upper" and the like are used to explain the relationship association of components shown in the drawings. The terms may be relative concepts and described based on the directions shown in the drawings, but are not limited thereto.

[0045] The term "overlap" or "overlapping" means that a first object may be above or below a second object or to the side of the second object, and vice versa. Additionally, the term "overlap" may include stacking, stacking, facing or facing, extending over, covering or partially covering, or any other suitable term that will be appreciated and understood by a person of ordinary skill in the art.

[0046] When an element is described as “not overlapping” or “will not overlap” another element, this may include the elements being spaced apart, offset, or separated from each other, or any other suitable terminology that would be appreciated and understood by one of ordinary skill in the art.

[0047] The term "opposed to" means that the first element may be directly or indirectly opposed to the second element. In the case where a third element is interposed between the first element and the second element, the first element and the second element may be understood to be indirectly opposed to each other although still opposed to each other.

[0048] like Figure 1As shown, some embodiments of the present disclosure provide a display device 1000 , which may be any device that displays anything, whether in motion (eg, video) or fixed (eg, still image), and whether in text or image.

[0049] For example, see Figure 1 The display device 1000 can be any product or component with a display function, such as a television, a laptop computer, a tablet computer, a mobile phone, a personal digital assistant (PDA), a navigator, a car display, a flight display, a wearable device, a virtual reality (VR) device, etc.

[0050] For example, Figure 1 As shown, the display device 1000 may be a portable display product; for example, the display device 1000 may be Figure 1 For another example, see Figure 2 , the display device 1000 may be a wearable device; for example, the display device 1000 may be Figure 2 The watch shown in.

[0051] According to different application scenarios, the display device 1000 can be any one of a flat display device, a curved display device, a foldable display device, or a rollable display device. Moreover, the shape of the display surface of the display device 1000 can be roughly any one of a circle, an ellipse, a polygon, or an irregular shape, which is not specifically limited in the embodiments of the present disclosure.

[0052] In this article, "substantially circular or elliptical" means that the shape is circular or elliptical as a whole, but is not limited to a standard circular or elliptical shape. That is, the "circular or elliptical" here includes not only a substantially circular or elliptical shape, but also a shape similar to a circular or elliptical shape. For example, "circular or elliptical" includes not only a curve with the same curvature everywhere, but also a smooth curve, that is, a circle or ellipse may include a plurality of end-to-end broken line segments that are approximately arc-shaped.

[0053] In this article, "substantially polygonal" means that the shape is polygonal as a whole, but is not limited to a standard polygon. That is, the "polygonal" here includes not only basic polygonal shapes, but also shapes similar to polygons. For example, two adjacent sides of a polygon are curved at each intersection (i.e., corners), that is, the corners are smooth, and the shape is a rounded polygon.

[0054] The following takes the above-mentioned display device 1000 as a flat display device, and the shape of the display surface of the display device 1000 is approximately rectangular as an example to schematically illustrate some embodiments of the present disclosure, but the implementation of the present disclosure is not limited to this, and any other display device 1000 can also be considered as long as the same technical concept is applied.

[0055] In some embodiments, see Figure 3 The display device 1000 includes a display module 100 and a housing 200, and the display module 100 can be disposed in the housing 200. For example, Figure 3 As shown, the housing 200 may be a box-shaped structure with an opening, and the display module 100 may be disposed in the housing 200 .

[0056] In some embodiments, Figure 3 As shown, the display module 100 includes a display panel 10. The display panel 10 may have a display side 10A and a back side 10B that are arranged opposite to each other. The display side 10A refers to a side of the display panel 10 that displays an image ( Figure 3 The back side 10B refers to the other side opposite to the display side 10A ( Figure 3 The lower side of the display panel 10).

[0057] It should be noted that the display side 10A only refers to the side of the display panel 10 that displays the image, and does not mean that the entire surface of the display side 10A of the display panel 10 can display. It may be that part of the surface of the display side 10A of the display panel 10 (for example, the surface of the display area A) can display, and the remaining part cannot display.

[0058] Among them, Figure 4 As shown, the display panel 10 has a display area A and a peripheral area B arranged on at least one side of the display area A. The display area A is an area for displaying an image, and is configured to set a plurality of sub-pixels P. The peripheral area B is an area for not displaying an image, and is configured to set a display driving circuit, for example, a gate driving circuit and a source driving circuit. Figure 4 In the figure, the peripheral area B is arranged around the display area A as an example.

[0059] In addition, the above-mentioned display panel 10 can be: an organic light emitting diode (OLED) display panel, a quantum dot light emitting diode (QLED) display panel, a light emitting diode display panel, a liquid crystal display panel, a plasma display panel, a field emission display panel, an electrowetting display panel or an electrophoretic display panel, etc., and the embodiments of the present disclosure do not make specific limitations on this.

[0060] In the following, some embodiments of the present disclosure are schematically described by taking the display panel 10 as an OLED display panel as an example, but the implementation of the present disclosure is not limited thereto, and any other display panel 10 may also be considered as long as the same technical concept is applied.

[0061] In some embodiments, see Figure 5 The display module 100 may further include an anti-reflection layer 310, which is disposed on the display side 10A of the display panel 10. The anti-reflection layer 310 is used to reduce the reflection intensity of the external ambient light on the display panel 10, thereby improving the display effect.

[0062] For some examples, see Figure 5 The anti-reflection layer 310 is a polarizer, which is disposed on the display side 10A of the display panel 10. The polarizer selects light of a certain polarization direction to pass through, thereby reducing the reflection intensity of the external ambient light on the display panel 10 and improving the display effect.

[0063] Among them, Figure 5 As shown, the polarizer can be directly formed on the display side 10A of the display panel 10 by a semiconductor process. In other examples, such as Figure 7 As shown, the display module 100 further includes a first adhesive layer 320 , and the polarizer is bonded to the display panel 10 via the first adhesive layer 320 .

[0064] It should be noted that the material of the first adhesive layer 320 includes a transparent adhesive layer. Here, the transparent adhesive layer refers to an adhesive layer with a transmittance greater than or equal to 90%. For example, the material of the first adhesive layer 320 may include optical adhesive, which is not specifically limited in the embodiment of the present disclosure.

[0065] For other examples, see Figure 5 The anti-reflection layer 310 includes a black matrix and a color filter. The black matrix is ​​used to separate the light emitted from different sub-pixels and reduce the reflected light generated after the external ambient light enters the display panel 10. The color filter can filter out most of the wavelengths of the external ambient light, thereby reducing the reflection intensity of the external ambient light on the display panel 10.

[0066] In some embodiments, Figure 3 and Figure 5 As shown, the display module 100 may further include a circuit board 400 , and the circuit board 400 is connected to the display panel 10 to provide the display panel 10 with a required display signal.

[0067] Among them, combined Figure 5 and Figure 6The circuit board 400 can be connected to the end of the display panel 10 at the display side 10A of the display panel 10 , and the circuit board 400 can be bent to the back side of the display panel 10 along with the display panel 10 to reduce the frame of the display device 1000 .

[0068] It should be noted that the circuit board 400 may include a timing controller (TCON for short), a power management chip, and an adjustable resistor voltage divider circuit (generating Vcom), etc.

[0069] For example, see Figure 4 and Figure 5 The display panel 10 includes a main body 101, a bending portion 102 and a binding portion 103 which are connected in sequence, and the bending portion 102 is located between the main body 101 and the binding portion 103. That is, the main body 101, the bending portion 102 and the binding portion 103 are arranged in sequence in the second direction Y.

[0070] Among them, combined Figure 4 , Figure 5 and Figure 6 The main body 101 is configured to display an image. For example, the main body 101 may include a display area A and a portion of the peripheral area B. The binding portion 103 is configured to connect the circuit board 400, and through a bending process, the bending portion 102 may be bent along a bending axis extending in the first direction X toward the back side 10B of the main body 101 of the display panel 10, so that the circuit board 400 and the binding portion 103 are bent along the bending portion 102 to the back side 10B of the main body 101 of the display panel 10, thereby reducing the display device 1000 (see Figure 1 ), where the first direction X is perpendicular to the second direction Y and is parallel to the main body 101.

[0071] The bending radius of the bending portion 102 may be 0.1 mm to 0.5 mm; for example, the bending radius of the bending portion 102 may be any one of 0.1 mm, 0.2 mm, 0.3 mm, 0.35 mm, 0.4 mm and 0.5 mm.

[0072] It should be noted that a driving chip 500 may also be provided on the binding portion 103 to reduce the width of the peripheral area B included in the main body 101, thereby reducing the width of the entire peripheral area B and increasing the screen-to-body ratio.

[0073] It should be understood that the bending portion 102 of the display panel 10 may omit a portion of the film layer compared to the main body 101. For example, the bending portion 102 may only retain one or two metal layers for setting connection wiring to reduce the bending resistance of the bending portion 102 and reduce the risk of cracks or breakage of the bending portion 102. In other words, the main body 101 and the bending portion 102 may be divided by the transition position of the wiring, which is not specifically limited in the embodiments of the present disclosure.

[0074] Based on the above, the display panel 10 has two states: an unfolded state and a folded state. Figure 5 As shown, the bending state is Figure 6 As shown, the positional relationship of various parts of the display panel 10 is described below by taking the unfolded state as an example, but the embodiments of the present disclosure are not limited thereto.

[0075] At this time, the anti-reflection layer 310 can be located on the main body 101 and cover the display area A to improve the ability of the entire display area A to resist interference from external ambient light. For example, the boundary of the orthographic projection of the anti-reflection layer 310 on the display panel 10 is located between the boundary of the display area A and the boundary of the main body 101.

[0076] It should be understood that see Figure 5 The bending portion 102 includes a first transition zone M1, a second transition zone M2, and a bending zone M3 located between the first transition zone M1 and the second transition zone M2. The first transition zone M1 is adjacent to the main body 101.

[0077] like Figure 5 and Figure 6 As shown, the first transition zone M1 and the second transition zone M2 are areas where the unbent extension sections of the bending portion 102 are located, the bending zone M3 is an area where the bending section of the bending portion 102 is located, and the portion of the bending portion 102 located in the first transition zone M1 is connected to the main body 101, and the portion of the bending portion 102 located in the second transition zone M2 is connected to the binding portion 103.

[0078] In the related art, the display module also includes a protective glue, which covers the bent portion and is connected to the polarizer. However, the length of the protective glue between the bent portion and the polarizer is too long, and the distance between the top and bottom of the protective glue close to the polarizer is at least 350μm, that is, the length of this part is greater than or equal to 700μm, which results in the frame of the display device corresponding to the binding circuit board ( Figure 1 The width of the lower frame in the display is relatively large, which is not conducive to the narrow frame design of the display device.

[0079] Based on this, see Figure 5 The display module 100 provided in some embodiments of the present disclosure further includes a bending adhesive 110 and a blocking adhesive 120 .

[0080] like Figure 5 As shown, the bending glue 110 is disposed on the display side 10A of the display panel 10 and covers the bending area M3. The blocking glue 120 is disposed on the display side 10A of the display panel 10 and is connected to the bending glue 110. The blocking glue 120 includes a first blocking glue 121, and the first blocking glue 121 is located between the bending glue 110 and the display area A. For example, the first blocking glue 121 is located between the bending glue 110 and the anti-reflection layer 310.

[0081] The surface energy of the first blocking glue 121 is greater than the surface energy of the bending glue 110. It should be understood that the greater the surface energy of the glue, the smaller the area of ​​the glue of the same mass spread on the display panel 10 before curing. In other words, the first blocking glue 121 spreads on the display panel 10. The smaller area is conducive to reducing the length of the first blocking glue 121 in the second direction Y, thereby reducing the frame of the display device 1000 corresponding to the binding circuit board 400 ( Figure 1 The length of the lower border in the second direction Y.

[0082] For example, see Figure 5 The surface energy of the first blocking glue 121 is greater than the surface energy of the film layer in the display panel 10 that contacts the first blocking glue 121, so as to reduce the spreading area of ​​the first blocking glue 121 formed on the display panel 10 by the inkjet printing process, thereby reducing the length of the first blocking glue 121 in the second direction Y.

[0083] For example, Fig.10 As shown, the display panel 10 includes a display substrate 11 and an encapsulation layer 12 for encapsulating the display substrate 11. The encapsulation layer 12 is disposed on the display substrate 11 to prevent moisture and oxygen in the external environment from entering the display panel 10, thereby shortening the service life of the display panel 10. Here, the film layer in the display panel 10 that contacts the first barrier glue 121 is the encapsulation layer 12, that is, the surface energy of the first barrier glue 121 is greater than the surface energy of the encapsulation layer 12.

[0084] It should be understood that the film layer stacking structure included in the display substrate 11 is not unique. Fig.10 In the figure, the display substrate 11 is taken as an example to include a substrate 13, a first semiconductor layer ACT1, a first gate insulating layer GI1, a first gate conductive layer GT1, a first interlayer insulating layer ILD1, a second gate conductive layer GT2, a second gate insulating layer GI2, a second semiconductor layer ACT2, a third gate insulating layer GI3, a third gate conductive layer GT3, a second interlayer insulating layer ILD2, a first source and drain conductive layer SD1, a first flat layer PLN1, a second source and drain conductive layer SD2, a second flat layer PLN2, a first electrode layer 14, a pixel defining layer 15, a spacer layer 16, a light-emitting functional layer 17 and a second electrode layer 18 which are arranged in sequence.

[0085] On this basis, along the second direction Y, the length of the first blocking glue 121 can be, for example, less than or equal to 240 μm; that is, along the second direction Y, the distance between the top and bottom of the first blocking glue 121 away from the bending glue 110 is less than or equal to 120 μm. For example, along the second direction Y, the length of the first blocking glue 121 is any one of 160 μm, 170 μm, 180 μm, 190 μm, 200 μm, 210 μm, 220 μm, 230 μm and 240 μm; and / or, along the second direction Y, the distance between the top and bottom of the first blocking glue 121 away from the bending glue 110 is any one of 80 μm, 85 μm, 90 μm, 95 μm, 100 μm, 105 μm, 110 μm, 115 μm and 120 μm.

[0086] At this time, compared with the related art, the distance between the top and bottom of the first blocking adhesive 121 on the side away from the bending adhesive 110 of the embodiment of the present disclosure is reduced, so that the sum of the lengths of the first blocking adhesive 121 and the bending adhesive 110 in the second direction Y can be reduced by at least 230 μm, so that the frame ( Figure 1 The length of the lower frame in the second direction Y can be reduced by at least 230 μm, thereby reducing the display device 1000 (see Figure 1 ) to improve the display device 1000 (see Figure 1 ) for the purpose of increasing the screen-to-body ratio.

[0087] In addition, the surface energy of the first barrier adhesive 121 is greater than the surface energy of the bending adhesive 110. The bending adhesive 110 is spread over a larger area on the display panel 10, which is beneficial to reducing the thickness of the bending adhesive 110 in the third direction Z, thereby reducing the frame of the display device 1000 corresponding to the binding circuit board 400 ( Figure 1 The length of the lower border in the second direction Y.

[0088] It should be noted that the third direction Z is perpendicular to the main body 101 , that is, the third direction Z is perpendicular to the plane defined by the first direction X and the second direction Y.

[0089] For example, see Figure 5 The surface energy of the bending adhesive 110 is smaller than the surface energy of the film layer in the display panel 10 that contacts the bending adhesive 110, so as to increase the spreading area of ​​the bending adhesive 110 formed on the display panel 10 by the inkjet printing process, reduce the thickness of the bending adhesive 110, thereby reducing the distance between the bending axis and the outer surface of the bending adhesive 110, and reduce the frame of the display device 1000 corresponding to the binding circuit board 400 ( Figure 1 ).

[0090] For example, Fig.10As shown, the display panel 10 includes a display substrate 11 and an encapsulation layer 12 for encapsulating the display substrate 11. The encapsulation layer 12 is disposed on the display substrate 11 to prevent moisture and oxygen in the external environment from entering the display panel 10, thereby shortening the service life of the display panel 10. Here, the film layer in the display panel 10 that contacts the bending adhesive 110 is the encapsulation layer 12, that is, the surface energy of the bending adhesive 110 is less than the surface energy of the encapsulation layer 12.

[0091] On this basis, along the third direction Z, the thickness of the bending adhesive 110 may be, for example, 30 μm to 70 μm, for example, the thickness of the bending adhesive 110 is any one of 30 μm, 40 μm, 50 μm, 60 μm and 70 μm.

[0092] At this time, compared with the related art, the thickness of the bending adhesive 110 of the display device 1000 of the present disclosure embodiment is reduced, so that the thickness of the bending adhesive 110 can be reduced by at least 15 μm, so that the display device 1000 corresponds to the frame ( Figure 1 The lower border in the image can be further reduced by at least 15μm.

[0093] In some embodiments, see Figure 5 The blocking adhesive 120 further includes a second blocking adhesive 122 , and the bending adhesive 110 is located between the first blocking adhesive 121 and the second blocking adhesive 122 .

[0094] The surface energy of the second blocking glue 122 is greater than the surface energy of the bending glue 110. It should be understood that the greater the surface energy of the glue, the smaller the area of ​​the glue of the same mass spread on the display panel 10 before curing. In other words, the second blocking glue 122 spreads on the display panel 10. A smaller area is helpful to reduce the length of the second blocking glue 122 in the second direction Y, thereby reducing the frame of the display device 1000 corresponding to the binding circuit board 400 ( Figure 1 The length of the lower border in the second direction Y.

[0095] For example, see Figure 5 The surface energy of the second blocking glue 122 is greater than the surface energy of the film layer in contact with the second blocking glue 122 in the display panel 10, so as to reduce the spreading area of ​​the second blocking glue 122 formed on the display panel 10 by the inkjet printing process, thereby reducing the length of the second blocking glue 122 in the second direction Y.

[0096] For example, Fig.10As shown, the display panel 10 includes a display substrate 11 and an encapsulation layer 12 for encapsulating the display substrate 11. The encapsulation layer 12 is disposed on the display substrate 11 to prevent moisture and oxygen in the external environment from entering the display panel 10, thereby shortening the service life of the display panel 10. Here, the film layer in the display panel 10 that contacts the second barrier glue 122 is the encapsulation layer 12, that is, the surface energy of the second barrier glue 122 is greater than the surface energy of the encapsulation layer 12.

[0097] On this basis, along the second direction Y, the length of the second blocking glue 122 can be, for example, less than or equal to 240 μm; that is, along the second direction Y, the distance between the top and bottom of the second blocking glue 122 away from the bending glue 110 is less than or equal to 120 μm. For example, along the second direction Y, the length of the second blocking glue 122 is any one of 160 μm, 170 μm, 180 μm, 190 μm, 200 μm, 210 μm, 220 μm, 230 μm and 240 μm; and / or, along the second direction Y, the distance between the top and bottom of the second blocking glue 122 away from the bending glue 110 is any one of 80 μm, 85 μm, 90 μm, 95 μm, 100 μm, 105 μm, 110 μm, 115 μm and 120 μm.

[0098] At this time, compared with the related art, the distance between the top and bottom of the first blocking glue 121 and the second blocking glue 122 on the side away from the bending glue 110 in the embodiment of the present disclosure is reduced, so that the sum of the lengths of the first blocking glue 121, the second blocking glue 122 and the bending glue 110 in the second direction Y can be reduced by at least 460 μm, so that the frame ( Figure 1 The length of the lower border in the second direction Y can be reduced by at least 460μm.

[0099] In the third direction Z, the thickness of the blocking glue 120 may be 30 μm to 70 μm. For example, the thickness of the blocking glue 120 is any one of 30 μm, 40 μm, 50 μm, 60 μm and 70 μm. The thickness of the first blocking glue 121 and the second blocking glue 122 may be the same or different, which is not specifically limited in the embodiment of the present disclosure.

[0100] In some embodiments, Figure 5 As shown, the material of the blocking adhesive 120 includes a main material and a doping material, and the main material is the same as the material of the bending adhesive 110. Moreover, the specific surface area of ​​the doping material is greater than the specific surface area of ​​the main material, so that the surface energy of the blocking adhesive 120 is greater than the surface energy of the bending adhesive 110. The specific surface area of ​​the doping material can be greater than or equal to 200, for example.

[0101] For example, the main material includes polypropylene-based organic matter, such as acrylic acid. The doping material includes a thickener, such as gas silicon and / or cyanide. Moreover, the doping ratio of the doping material can be 3% to 5%, such as the doping ratio of the doping material is any one of 3%, 4% and 5%.

[0102] At this time, the shear strength, peel strength and tensile strength of the blocking glue 120 and the bending glue 110 are roughly equal, the difference ratio of the elongation at break is less than or equal to 20%, the difference ratio of the hardness is less than or equal to 40%, and the viscosity difference is relatively large. For example, the hardness of the blocking glue 120 is approximately 43A, the elongation at break is approximately 170%, the elastic modulus is approximately 7.5Mpa, the thixotropic index is approximately 2.25, and the viscosity is greater than or equal to 2000cps. The hardness of the bending glue 110 is approximately 30A, the elongation at break is approximately 168%, the elastic modulus is approximately 4.7Mpa, the thixotropic index is approximately 1.2, and the viscosity is approximately 800cps.

[0103] Based on the above, there is not much difference in mechanical properties between the blocking glue 120 and the bending glue 110. That is to say, when the blocking glue 120 and the bending glue 110 provide good protection for the display panel 10, the viscosity of the blocking glue 120 can be improved, and the spreading area of ​​the blocking glue 120 can be reduced, thereby reducing the length of the blocking glue 120 in the second direction Y, so as to reduce the frame of the display device 1000 corresponding to the binding circuit board 400 ( Figure 1 The purpose of the length of the lower border in the second direction Y is.

[0104] In addition, the main material of the blocking adhesive 120 is the same as that of the bending adhesive 110, which can improve the connection reliability between the blocking adhesive 120 and the bending adhesive 110 and avoid the delamination phenomenon between the blocking adhesive 120 and the bending adhesive 110. At the same time, the main material of the blocking adhesive 120 can be prepared with the same material and equipment as that of the bending adhesive 110, and the types of bill of materials can be reduced, thereby reducing the production cost.

[0105] In some embodiments, see Figure 5 and Figure 6, along the third direction Z, the thickness of the first barrier glue 121 and the second barrier glue 122 is greater than or equal to the thickness of the bending glue 110. For example, along the third direction Z, the thickness of the barrier glue 120 is 0μm to 40μm greater than the thickness of the bending glue 110. In this case, in the process of preparing the first barrier glue 121, the second barrier glue 122 and the bending glue 110, the first barrier glue 121 and the second barrier glue 122 can be formed first, and the first barrier glue 121 and the second barrier glue 122 can be formed by dispensing and curing processes in sequence. Based on the large surface energy of the first barrier glue 121 and the second barrier glue 122, after the dispensing process, the first barrier glue 121 and the second barrier glue 122 will not spread out, which can avoid interfering with the subsequent process of forming the bending glue 110. Then, the bending glue 110 is formed. The first blocking adhesive 121 and the second blocking adhesive 122 can play a blocking role and can confine the bending adhesive 110 between the first blocking adhesive 121 and the second blocking adhesive 122 to prevent the bending adhesive 110 from overflowing, and the process is simple.

[0106] In other embodiments, see Figure 7 , along the third direction Z, the thickness of the first blocking glue 121 and the second blocking glue 122 is less than the thickness of the bending glue 110. For example, along the third direction Z, the ratio of the thickness of the bending glue 110 to the thickness of the blocking glue 120 is 1 to 1.02. In this case, the bending glue 110 can cover a part of the first blocking glue 121 and the second blocking glue 122 on the side away from the display panel 10, and will not overflow to the two sides of the first blocking glue 121 and the second blocking glue 122 that are away from each other, and the connection reliability of the first blocking glue 121, the second blocking glue 122 and the bending glue 110 is higher.

[0107] In some embodiments, see Figure 5 and Figure 6 There is a distance between the first barrier glue 121 and the anti-reflection layer 310 to prevent the first barrier glue 121 from climbing along the boundary of the anti-reflection layer 310 and causing a siphon phenomenon. The distance between the first barrier glue 121 and the anti-reflection layer 310 can be specifically designed according to the frame of the actual product, and the embodiment of the present disclosure does not specifically limit this.

[0108] In this way, the first barrier glue 121 will not climb along the boundary of the anti-reflection layer 310 to the surface of the anti-reflection layer 310 away from the display panel 10 due to the effect of siphon, thereby avoiding adverse effects caused by subsequent processes such as installing the cover plate 330. In addition, the first barrier glue 121 will not cause uneven thickness of the film layer due to the effect of siphon, and the thickness of the first barrier glue 121 can be more accurately controlled, which is conducive to improving the uniformity of the thickness of the first barrier glue 121.

[0109] In this article, due to the existence of process deviation, there is a spacing between the first barrier glue 121 and the anti-reflection layer 310, including that the first barrier glue 121 and the anti-reflection layer 310 are separated everywhere in the first direction X. Taking the process deviation of ±30μm as an example, the first barrier glue 121 is in contact with the anti-reflection layer 310, which can be understood as setting the alignment distance between the boundary of the first barrier glue 121 and the anti-reflection layer 310 to be greater than 30μm during the process of forming the first barrier glue 121 and the anti-reflection layer 310, so that the minimum distance between the first barrier glue 121 and the anti-reflection layer 310 is greater than 0μm.

[0110] In other embodiments, see Figure 7 and Figure 8 The first barrier glue 121 contacts the anti-reflection layer 310 to improve the sealing performance and reduce the risk of water vapor and oxygen in the external environment entering the display panel 10 and thus shortening the service life of the display panel 10 .

[0111] In this document, due to the existence of process deviation, the first barrier glue 121 is in contact with the anti-reflection layer 310, including that the first barrier glue 121 is in contact with the anti-reflection layer 310 everywhere in the first direction X, and also including that the first barrier glue 121 is in contact with the anti-reflection layer 310 only partially in the first direction X. Taking the process deviation of ±30 μm as an example, the first barrier glue 121 is in contact with the anti-reflection layer 310, which can be understood as setting the alignment distance between the boundary of the first barrier glue 121 and the anti-reflection layer 310 to 30 μm during the process of forming the first barrier glue 121 and the anti-reflection layer 310, so that the minimum distance between the first barrier glue 121 and the anti-reflection layer 310 is equal to 0 μm.

[0112] In some embodiments, Figure 5 and Figure 7 As shown, the display module 100 further includes a cover plate 330 and a light shielding layer 340 , and the cover plate 330 and the light shielding layer 340 are disposed on a side of the anti-reflection layer 310 away from the display panel 10 .

[0113] The cover plate 330 plays a protective role, and the light shielding layer 340 is used to shield the area outside the display area A of the display panel 10 to prevent light leakage.

[0114] In some examples, such as Figure 5 As shown, the cover plate 330 is a single-layer glass cover plate. The light shielding layer 340 can be disposed between the cover plate 330 and the anti-reflection layer 310. The light shielding layer 340 can be formed on the surface of the cover plate 330 close to the display panel 10 by a screen printing process, and the adhesion between the light shielding layer 340 and the cover plate 330 is stronger and not easy to fall off.

[0115] In other examples, such as Figure 7As shown, along the third direction Z, and in the direction from the display panel 10 to the cover plate 330, the cover plate 330 includes an inorganic cover plate and / or an organic cover plate. Among them, the inorganic cover plate can be a single layer or multiple layers, and the organic cover plate can be a single layer or multiple layers. The material of the inorganic cover plate can include, for example, ultra-thin flexible glass (UltraThin Glass, referred to as UTG). The material of the organic cover plate can include, for example, at least one of polyimide, polycarbonate, polyamide, triacetyl cellulose, polymethyl methacrylate and polyethylene terephthalate (referred to as PET).

[0116] For example, Figure 7 As shown, the cover plate 330 includes an ultra-thin flexible glass 331 and a PET plastic layer 332, and the ultra-thin flexible glass 331 is located between the PET plastic layer 332 and the anti-reflection layer 310. At this time, the light shielding layer 340 can be formed on the surface of the PET plastic layer 332 close to the display panel 10 by a screen printing process, and the adhesion between the light shielding layer 340 and the PET plastic layer 332 is stronger and not easy to fall off.

[0117] It should be noted that the above-mentioned multi-layer inorganic cover plates, or multi-layer organic cover plates, or between the inorganic cover plate and the organic cover plate, and between the cover plate 330 and the anti-reflection layer 310 can be bonded by a transparent adhesive layer 350, and the transmittance of the transparent adhesive layer 350 is greater than or equal to 90%, which is not specifically limited in the embodiments of the present disclosure.

[0118] In some embodiments, see Figure 5 The display module 100 further includes a back film 70 , which is located at the back side of the display panel 10 . The back film 70 may include, for example, a first sub-back film 71 and a second sub-back film 72 , which are disconnected at the bending portion 102 .

[0119] like Figure 5 and Figure 6 As shown, along the third direction Z, the first sub-back film 71 at least partially overlaps the main body 101 . The second sub-back film 72 at least partially overlaps the binding portion 103 , and the second sub-back film 72 can be bent along the binding portion 103 to the back side 10B of the main body 101 of the display panel 10 .

[0120] In this case, the back film 70 exposes the bending portion 102 of the display panel 10, which can reduce the bending resistance of the bending portion 102 of the display panel 10 and change the position of the force neutral layer of the bending portion 102 of the display panel 10 during the bending process, thereby avoiding damage to the display panel 10.

[0121] In some examples, such as Figure 5As shown, the orthographic projection of the boundary of the main body 101 on the reference surface is located within the range of the orthographic projection of the boundary of the first sub-back film 71 on the reference surface, that is, the first sub-back film 71 covers the main body 101, and the side of the first sub-back film 71 close to the second sub-back film 72 extends to the bent portion 102. The orthographic projection of the boundary of the binding portion 103 on the reference surface is located within the range of the orthographic projection of the boundary of the second sub-back film 72 on the reference surface, that is, the second sub-back film 72 covers the binding portion 103, and the side of the second sub-back film 72 close to the first sub-back film 71 extends to the bent portion 102.

[0122] In this case, during the bending process of the display panel 10, stress concentration at the junction of the main body 101, the bending portion 102 and the binding portion 103 can be avoided, thereby reducing the risk of cracks or breakage of the display panel 10 at the junction of the main body 101, the bending portion 102 and the binding portion 103.

[0123] In some embodiments, Figure 5 and Figure 7 As shown, the display module 100 further includes a supporting assembly 80 , which is disposed on the back side of the main body 101 of the display panel 10 to play a supporting role.

[0124] For example, see Figure 5 and Fig. 9 The support assembly 80 may further include a second adhesive layer 81, a first buffer layer 82, a first protective layer 83 and a heat dissipation layer 84 stacked in sequence. The second adhesive layer 81 is directly connected to the first sub-back film 71. The support assembly 80 may not include the first protective layer 83, which is not specifically limited in the embodiment of the present disclosure.

[0125] It should be noted that, for example, an adhesive layer may be provided between the first buffer layer 82 , the first protective layer 83 and the heat dissipation layer 84 , and this embodiment of the present disclosure does not specifically limit this.

[0126] See also Figure 5 and Fig. 9 The orthographic projection of the second adhesive layer 81 on the main body 101 may be, for example, in a grid shape. The grid structure of the second adhesive layer 81 can prevent bubbles from being generated during the bonding process between the second adhesive layer 81 and the back film 70, thereby avoiding defects such as bulging of the back film 70.

[0127] It should be noted that the material of the second adhesive layer 81 includes a glue layer. For example, the material of the second adhesive layer 81 includes an optical adhesive and / or a pressure-sensitive adhesive, which is not specifically limited in the embodiment of the present disclosure.

[0128] See also Fig. 9 The first buffer layer 82 mainly plays a role in buffering and shock resistance, so as to improve the display device 1000 (see Figure 1) impact resistance. Among them, the first buffer layer 82 can be a single layer or a multi-layer laminated structure, and the first buffer layer 82 can include at least one layer of a polyimide (PI) layer, a PET plastic layer, and a foam layer. Exemplarily, the first buffer layer 82 can also be composed of PET plastic and graphite; for example, a support frame is formed by using PET plastic, and graphite is filled in the support frame. In this way, the first buffer layer 82 can also play a role in heat dissipation.

[0129] See also Fig. 9 The first protective layer 83 mainly serves to release stress. The first protective layer 83 can produce a certain deformation after being subjected to stress (tensile stress or compressive stress), and release its internal rebound stress through the deformation of the first protective layer 83 itself, so as to reduce the possibility of film separation of the display panel 10.

[0130] See also Fig. 9 The heat dissipation layer 84 may be a single layer or a multi-layer laminated structure. The heat dissipation layer 84 may include a metal; for example, the heat dissipation layer 84 includes at least one of copper, silver and steel. The heat dissipation layer 84 may also include a non-metal; for example, the heat dissipation layer 84 includes graphite. The heat dissipation layer 84 may also be connected to the housing 200 (see Figure 3 ) is electrically connected, the heat dissipation layer 84 can conduct heat or charge to the housing 200 (see Figure 3 ) to realize grounding of the heat dissipation layer 84, which is beneficial to the heat dissipation of the heat dissipation layer 84.

[0131] In some embodiments, Figure 5 and Figure 6 As shown, the display module 100 may further include a connection pad 90, which may be disposed, for example, on a side of the binding portion 103 close to the main body 101 of the display panel 10. One end of the connection pad 90 is connected to the second sub-back film 72, and the other end is connected to the support assembly 80 to fix the binding portion 103 of the display panel 10.

[0132] Some embodiments of the present disclosure also provide a method for preparing a display module, such as Fig.11 As shown, the preparation method includes S100 to S300.

[0133] S100: See Fig.14 , a display panel 10 is provided.

[0134] In the above steps, if Figure 4 and Fig.14As shown, the display panel 10 has a display side 10A and a back side 10B that are arranged opposite to each other. The display panel 10 includes a main body 101, a bending portion 102 and a binding portion 103 that are connected in sequence, and the bending portion 102 is located between the main body 101 and the binding portion 103. Among them, the main body 101 has a display area A, and the bending portion 102 can be bent toward the back side of the main body 101 along a bending axis extending along a first direction X, so that the binding portion 103 is bent to the back side of the main body 101. The bending portion 102 includes a first transition area M1, a second transition area M2, and a bending area M3 located between the first transition area M1 and the second transition area M2, and the first transition area M1 is adjacent to the main body 101.

[0135] S200: See Fig.14 , an anti-reflection layer 310 is formed on the display side 10A of the display panel 10 .

[0136] In the above steps, if Figure 4 and Fig.14 As shown, the anti-reflection layer 310 is disposed on the display side of the display panel 10 and is located in the main body 101. The anti-reflection layer 310 may be a polarizer, and protective films may be attached to both sides of the polarizer. In S200, the protective film on one side of the anti-reflection layer 310 may be torn off first, and the surface with the protective film torn off may be aligned and bonded to the display panel 10; after S300, the protective film on the other side may be torn off to facilitate connection with the cover plate 330 (see Figure 5 )connect.

[0137] S300: See Fig.15 and Fig.16 , a bending adhesive 110 and a blocking adhesive 120 are formed on the display side 10A of the display panel 10 .

[0138] In the above steps, if Fig.15 and Fig.16 As shown, the bending glue 110 is disposed on the display side 10A of the display panel 10 and covers the bending area M3. The blocking glue 120 is disposed on the display side 10A of the display panel 10 and is connected to the bending glue 110. The blocking glue 120 may, for example, include a first blocking glue 121, and the first blocking glue 121 is located between the bending glue 110 and the display area A. For example, the first blocking glue 121 is located between the bending glue 110 and the anti-reflection layer 310. Moreover, along the second direction Y, the length of the first blocking glue 121 is less than or equal to 240 μm.

[0139] In some embodiments, see Fig.12 , S300 includes S310~S340.

[0140] S310: See Fig.14 , a first adhesive material 121 ′ is formed on the display side 10A of the display panel 10 .

[0141] In the above steps, the first adhesive material 121' is located between the display area A and the bending area M3. For example, the first adhesive material 121' is located between the anti-reflection layer 310 and the bending area M3. The viscosity of the first adhesive material 121' may be greater than or equal to 2000cps. Exemplarily, the viscosity of the first adhesive material 121' may be 2000cps to 4000cps. For example, the viscosity of the first adhesive material 121' may be any one of 2000cps, 2200cps, 2400cps, 2500cps, 2800cps, 3000cps, 3300cps, 3500cps, 3600cps, 3800cps and 4000cps. In addition, the contact angle of the first adhesive material 121 ′ may be, for example, greater than or equal to π / 2, so as to reduce the area of ​​the first adhesive material 121 ′ spread on the display panel 10 .

[0142] In some examples, S310 may specifically use a direct writing valve, and when the printing pressure is 20Psi to 40Psi, taking the printing needle valve diameter as 65μm and the printing speed as 20mm / s as an example, the edge of the anti-reflection layer 310 is visually captured, the alignment distance between the printing needle valve and the polarizer is set to 30μm, and printing is performed according to the edge of the anti-reflection layer 310. The printing thickness may be, for example, less than or equal to 40μm, and the printing thickness may be specifically adjusted by the amount of glue printed.

[0143] S320: See Fig.14 and Fig.15 , and solidify the first adhesive material 121 ′ to form a first barrier adhesive 121 .

[0144] In the above steps, the first adhesive material 121 ′ may be cured under light with a curing energy of 400 mJ to 1000 mJ, an illumination of 100 mW to 400 mW, and a wavelength of 365 nm to 395 nm.

[0145] S330: See Fig.15 and Fig.16 , a second adhesive material 110 ′ is formed on the display side 10A of the display panel 10 .

[0146] In the above steps, the second adhesive material 110' is located on the side of the first barrier adhesive 121 away from the display area A. For example, the second adhesive material 110' is located on the side of the first barrier adhesive 121 away from the anti-reflection layer 310, and covers the bending area M3. The viscosity of the second adhesive material 110' is less than the viscosity of the first adhesive material 121'. Exemplarily, the viscosity of the second adhesive material 110' may be less than or equal to 1000cps. For example, the viscosity of the second adhesive material 110' may be 600cps to 1000cps. For example, the viscosity of the second adhesive material 110' may be any one of 600cps, 650cps, 700cps, 750cps, 800cps, 850cps, 900cps, 950cps and 1000cps.

[0147] In some examples, S330 may specifically use a piezoelectric valve with a valve diameter of 100 μm, set the printing height between the piezoelectric valve and the display panel 10 to 1 mm for printing at a voltage of 330 V and a printing speed of 100 mm / s. The amount of glue printed may be obtained according to the following formula:

[0148] T=((H*L)*W).

[0149] The amount of glue printed by the piezoelectric valve is T, the width of the display panel 10 in the first direction X is W, the thickness of the blocking glue 120 is H, and the average distance between the first blocking glue 121 and the second blocking glue 122 is L.

[0150] S340: See Fig.15 and Fig.16 , and solidify the second adhesive material 110 ′ to form the bending adhesive 110 .

[0151] In the above steps, the second adhesive material 110 ′ may be cured under light with a curing energy of 1000 mJ to 2000 mJ, an illumination of 200 mW to 400 mW, and a wavelength of 365 nm to 395 nm.

[0152] In some embodiments, between S310 and S320, refer to Fig.13 , S300 also includes S350.

[0153] S350: See Fig.14 and Fig.15 , a third adhesive material 122 ′ is formed on the display side 10A of the display panel 10 .

[0154] In the above steps, the third adhesive material 122' is located on the side of the bending area M3 away from the first transition area M1. Here, the material of the third adhesive material 122' can be the same as the material of the first adhesive material 121', and in the process of S320, the third adhesive material 122' is also cured to form the second blocking adhesive 122. That is, the first adhesive material 121' and the third adhesive material 122' are cured in the same process step, which can simplify the process flow and reduce the preparation cost. Among them, the bending adhesive 110 is located between the first blocking adhesive 121 and the second blocking adhesive 122. And, along the second direction Y, the length of the second blocking adhesive 122 is less than or equal to 240μm.

[0155] The above is only a specific embodiment of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any changes or substitutions that can be thought of by any person skilled in the art within the technical scope disclosed in the present disclosure should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A display module, characterized in that: include: A display panel having a display side and a back side arranged opposite to each other; the display panel comprises a main body, a bending portion and a binding portion connected in sequence, the bending portion being located between the main body and the binding portion; the main body having a display area; the bending portion can be bent along a bending axis extending in a first direction toward the back side of the main body, so that the binding portion is bent to the back side of the main body; the bending portion comprises a first transition area, a second transition area and a bending area located between the first transition area and the second transition area, the first transition area being adjacent to the main body; A bending adhesive is disposed on the display side of the display panel and covers the bending area; The blocking glue is arranged on the display side of the display panel and connected to the bending glue; the blocking glue includes a first blocking glue, and the first blocking glue is located between the bending glue and the display area; and, along the second direction, the length of the first blocking glue is less than or equal to 240μm; the second direction is perpendicular to the first direction and parallel to the main body.

2. The display module according to claim 1, characterized in that: The blocking adhesive further includes a second blocking adhesive, and the bending adhesive is located between the first blocking adhesive and the second blocking adhesive; and along the second direction, the length of the second blocking adhesive is less than or equal to 240 μm.

3. The display module according to claim 2, characterized in that: Along the third direction, the thickness of the blocking adhesive is greater than or equal to the thickness of the bending adhesive; and the third direction is perpendicular to the main body.

4. The display module according to claim 3, characterized in that: Along the third direction, the thickness of the blocking adhesive is 0 μm to 40 μm greater than the thickness of the bending adhesive.

5. The display module according to claim 1, characterized in that: Along the third direction, the ratio of the thickness of the bending adhesive to the thickness of the blocking adhesive is 1 to 1.02; and the third direction is perpendicular to the main body.

6. The display module according to claim 1, characterized in that: The thickness of the blocking adhesive is 30 μm to 70 μm; and / or the thickness of the bending adhesive is 30 μm to 70 μm.

7. The display module according to claim 1, characterized in that: Along the second direction, a distance between a top end and a bottom end of a side of the blocking adhesive away from the bending adhesive is less than or equal to 120 μm.

8. The display module according to any one of claims 1 to 7, characterized in that: The surface energy of the barrier adhesive is greater than the surface energy of the bending adhesive.

9. The display module according to claim 8, characterized in that: The surface energy of the barrier adhesive is greater than the surface energy of the film layer in contact with the barrier adhesive in the display panel; and / or the surface energy of the bending adhesive is less than the surface energy of the film layer in contact with the bending adhesive in the display panel.

10. The display module according to any one of claims 1 to 7, characterized in that: Also includes: A cover plate, disposed on the display side of the display panel and covering the main body; The anti-reflection layer is arranged between the main body of the display panel and the cover plate; the first barrier adhesive is located between the anti-reflection layer and the bending adhesive.

11. A display device, characterized in that: include: The display module according to any one of claims 1 to 10; The display module is arranged in the housing.

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