CN115101574A

CN115101574A - Display module, preparation method thereof and display device

Info

Publication number: CN115101574A
Application number: CN202210855953.0A
Authority: CN
Inventors: 桑金龙; 齐超; 王博; 刘宇熙; 罗宁; 潘文虎; 殷摇进; 张乐; 杨映帆; 孙亚萌
Original assignee: BOE Technology Group Co Ltd; Mianyang BOE Optoelectronics Technology Co Ltd
Current assignee: BOE Technology Group Co Ltd; Mianyang BOE Optoelectronics Technology Co Ltd
Priority date: 2022-07-20
Filing date: 2022-07-20
Publication date: 2022-09-23

Abstract

The application discloses display module assembly and preparation method, display device thereof includes: the display panel comprises a display area and a bending area, and the orthographic projection of the polarizing layer on the display panel at least covers the display area; the stress neutralization layer is arranged on one side, close to the polarizing layer, of the display panel, and the orthographic projection of the stress neutralization layer on the display panel at least covers the bending area; the polarizing layer is provided with a plurality of flow guide parts on one side close to the stress neutralization layer, and the stress neutralization layer at least fills part of the flow guide parts. The bending performance of the display panel can be improved, and the bending delamination or the fracture can be prevented.

Description

Display module, preparation method thereof and display device

Technical Field

The application relates to the technical field of display, in particular to a display module, a preparation method thereof and a display device.

Background

With the development of information technology, display devices such as mobile phones have become indispensable tools in people's lives, and "full-screen" has become the pursuit of more and more users. The full-screen display devices declared in the industry are only ultra-high-screen-ratio display devices. In order to achieve the full-screen display effect of the display panel, the display panel is usually implemented by a method of bending a non-display area, that is, the method includes: the non-display area of the display panel is bent to the back of the display panel, so that the width of a frame of the screen body is reduced, and the screen occupation ratio is improved.

When the non-display area of the display panel is bent, the bent area of the display panel is prone to stress concentration. Conventionally, in order to solve the above problem, a stress neutralization layer is formed on a bending region of a display panel to relieve bending stress of the bending region of the display panel.

However, the rubberizing position on stress neutralization layer flushes with the polarisation layer, because siphon phenomenon can lead to the sizing material to be adsorbed to polarisation layer top to because the mobility of sizing material can lead to forming to pile up in the position department of contacting with the polarisation layer, pile up the department when the state of buckling and receive the stress the biggest, the layering of buckling and fracture phenomenon appear easily.

Disclosure of Invention

In view of the above-mentioned defects or shortcomings in the prior art, it is desirable to provide a display module, a method for manufacturing the same, and a display device, which can improve the bending performance of a display panel and prevent the display panel from being delaminated or broken.

In one aspect, the application provides a display module assembly, including:

the display panel comprises a display area and a bending area, and the orthographic projection of the polarizing layer on the display panel at least covers the display area;

the stress neutralization layer is arranged on one side, close to the polarizing layer, of the display panel, and the orthographic projection of the stress neutralization layer on the display panel at least covers the bending area;

the polarizing layer is provided with a plurality of flow guide parts on one side close to the stress neutralization layer, and the stress neutralization layer at least fills part of the flow guide parts.

Optionally, the stress neutralization layer includes a coating area and an extension area, an orthogonal projection of the coating area on the display panel overlaps an orthogonal projection of the edge of the polarizing layer on the display panel, and an orthogonal projection of the air guide on the display panel at least covers an orthogonal projection of the extension area on the display panel.

Optionally, the flow guide penetrates the polarizing layer in a direction perpendicular to the display panel.

Optionally, a plurality of the flow guiding portions are arranged in the bending region along a first direction, and the flow guiding portions extend to the edge of the polarizing layer along a second direction.

Optionally, the height of the stress neutralization layer in the direction perpendicular to the display panel does not exceed the height of the polarizing layer in the direction perpendicular to the display panel.

Optionally, the display panel is provided with a supporting layer on a side surface facing away from the polarizing layer.

Optionally, the stress neutralization layer is an organic material.

Optionally, a release film is disposed on a surface of one side of the polarizing layer, the surface facing away from the display panel, and an orthographic projection of the release film on the display panel is not overlapped with an orthographic projection of the diversion part on the display panel.

In a second aspect, the present application provides a method for manufacturing a display module, for manufacturing the display module described in any one of the above, the method including:

providing a display panel;

aligning and attaching a polarizing layer on the display panel, wherein a plurality of flow guide parts are arranged on one side of the polarizing layer close to the stress neutralizing layer;

and coating an organic material on the display panel to form a stress neutralization layer, wherein the stress neutralization layer at least fills part of the flow guide part.

In a third aspect, the present application provides a display device, including the display module as described in any of the above.

The technical scheme provided by the embodiment of the application can have the following beneficial effects:

according to the display module provided by the embodiment of the application, the diversion part is arranged on the polarizing layer, so that part of rubber materials on the stress neutralization layer can flow into the diversion part, the rubber materials are prevented from being stacked at the junction of the rubber materials and the polarizing layer, the adhesion force between the rubber materials and the polarizing layer is increased, and the bending delamination or the fracture is prevented; the bending area is good in bending effect, the display panel is prevented from being cracked when the wires at the bending area are arranged, and the display panel is provided with the ultra-narrow frame.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments made with reference to the following drawings:

FIG. 1 is a schematic illustration of a compound stack provided by an embodiment of the present application;

fig. 2 is a schematic cross-sectional view of a display module according to an embodiment of the present disclosure;

fig. 3 is a top view of a display module according to an embodiment of the present disclosure;

fig. 4 is a schematic diagram illustrating a display module according to an embodiment of the present disclosure after being bent;

FIGS. 5-8 are top views of a polarizing layer provided by embodiments of the present application;

fig. 9 is a flowchart of a method for manufacturing a display module according to an embodiment of the present disclosure;

fig. 10 is a schematic view illustrating a state where a polarizing layer is attached to a release film according to an embodiment of the present disclosure;

fig. 11 is a schematic view illustrating a state in which a polarizing layer is attached to a display panel according to an embodiment of the present disclosure.

Detailed Description

The present application will be described in further detail with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

At present in display panel's the technology of buckling, need set up stress neutralization layer in display panel's the district of buckling to improve display panel's the performance of buckling, but in the rubber coating technology, the rubber coating position on stress neutralization layer flushes with the polarisation layer, because siphon phenomenon can lead to the sizing material to be adsorbed to polarisation layer top, and because the mobility of sizing material, can lead to in the position department that contacts with the polarisation layer, form and pile up, as shown in figure 1, it is the biggest to pile up the stress that the department receives when the state of buckling, the layering and the fracture phenomenon of buckling appear easily.

Referring to fig. 2-4 in detail, the present application provides a display module, including:

the display panel comprises a display panel 1 and a polarizing layer 2 which are arranged in a stacked mode, wherein the display panel 1 comprises a display area D1 and a bending area D2, and the orthographic projection of the polarizing layer 2 on the display panel 1 at least covers the display area D1;

the stress neutralization layer 3 is arranged on one side, close to the polarizing layer 2, of the display panel 1, and the orthographic projection of the stress neutralization layer 3 on the display panel 1 at least covers the bending area D2;

wherein, the polarizing layer 2 is provided with a plurality of flow guiding parts 4 at one side close to the stress neutralization layer 3, and the stress neutralization layer 3 at least fills part of the flow guiding parts 4. It should be noted that, in the embodiment of the present disclosure, the stress neutralization layer 3 at least fills part of the flow guide portion 4, which means that the stress neutralization layer 3 partially or completely covers the flow guide portion 4. According to the difference of the glue coating amount of the stress neutralization layer 3 or the fluidity of the glue, the glue can completely fill the flow guide part 4 or the flow guide part 4 in a natural leveling state.

In the embodiment of the present disclosure, the stress neutralization layer 3 includes a coating region D4 and an extension region D3, an orthogonal projection of the coating region D4 on the display panel 1 overlaps an orthogonal projection of the edge of the polarizing layer 2 on the display panel 1, and an orthogonal projection of the flow guide 4 on the display panel 1 at least covers an orthogonal projection of the extension region D3 on the display panel 1. In the exemplary embodiment of the disclosure, the extension D3 naturally levels out through the application region D4 to the flow guides 4 in the polarizing layer 2 by means of a glue flow of the stress-neutralizing layer 3. Wherein the boundary of the coating region D4 is flush with the edge of the polarizing layer 2.

According to the display module provided by the embodiment of the application, the diversion part 4 is arranged on the polarizing layer 2, so that part of rubber materials of the stress neutralization layer 3 can flow into the diversion part 4, the rubber materials are prevented from being stacked at the junction of the rubber materials and the polarizing layer 2, the adhesion force between the rubber materials and the polarizing layer 2 is increased, and the bending delamination or the fracture and the strength of the polarizing layer 2 are prevented; bending region D2 is effectual of buckling, prevents that the line of display panel 1 bending region D2 position from producing the crackle, realizes the super narrow frame of display panel 1.

The display module that this application embodiment provided for the stress of buckling of display panel 1 when the state of buckling is at least partly offset with the tensile stress of stress neutralization layer 3, and then makes display panel 1's stress reduce, has improved the warpage phenomenon that display panel 1 takes place after the rete stack, thereby has reduced the warpage degree of the whole rete of array substrate, has promoted the product yield.

In the embodiment of the present disclosure, as shown in fig. 5, a plurality of the flow guiding parts 4 are arranged in an array along the first direction X in the bending region D2, and the flow guiding parts 4 extend to the edge of the polarizing layer 2 along the second direction Y. The flow guide portion 4 penetrates the polarizing layer 2 in a direction perpendicular to the display panel 1. It should be noted that the shape and number of the air guides 4 may be determined according to the size of the polarizing layer 2, and the shape and number of the air guides 4 are not limited in the embodiment of the present invention. The first direction X and the second direction Y are disposed at an included angle, the first direction X may be a width direction along the display panel 1, and the second direction Y may be a length direction along the display panel 1, and of course, in other embodiments, the first direction X and the second direction Y may be other directions.

For example, the pattern of the flow guiding portion 4 may be a rectangle, a square, a circle, a triangle, or other various patterns in a direction parallel to the display panel 1, and the embodiment of the present disclosure is not limited. As for the process of processing the pattern of the flow guide portion 4, any realizable process such as a die cutting process, an etching process, a laser cutting process, etc. may be used, which is not limited herein.

The stress neutralization layer 3 is made of organic materials. In the present embodiment, the stress neutralization layer 3 has certain viscoelasticity, for example, the stress neutralization layer 3 is a tiffy (Tuffy) glue, an acrylic type glue, and of course, the stress neutralization layer 3 may also be other elastic colloids.

In the embodiment of the present disclosure, the height of the stress neutralization layer 3 in the direction perpendicular to the display panel 1 is not more than the height of the polarization layer 2 in the direction perpendicular to the display panel 1, that is, the upper surface of the stress neutralization layer 3 is not higher than the upper surface of the polarization layer 2 in the cross section perpendicular to the display panel 1.

Through the structure of the embodiment of the present disclosure, on the one hand, the overflowing of glue from the stress neutralization layer 3 to the upper surface of the polarizing layer 2 can be prevented, and the polarizing layer 2 is prevented from being polluted. On the other hand, the interference between the stress neutralization layer 3 and other adjacent film layers of the display module caused by the overlarge overall thickness of the display panel 1 is avoided.

Since the glue of the stress neutralization layer 3 has a certain surface tension before curing, in order to ensure that the glue flows out sufficiently into the flow guides 4, in a possible embodiment, as shown in fig. 6, the cross-sectional width of the flow guides 4 is greater at the end remote from the stress neutralization layer 3 than at the end close to the stress neutralization layer 3. In the present embodiment, the cross-sectional width is a cross-sectional dimension in a direction perpendicular to the display panel 1.

In this embodiment, through the cross sectional dimension that is greater than the cross sectional dimension that is close to sizing material one end of keeping away from the sizing material, can form the negative pressure at the one end of keeping away from in the flow process of sizing material, increase the mobility of sizing material, further increase the roughness of stress neutralization layer 3.

In another embodiment of the present disclosure, as shown in fig. 7, the flow guide 4 includes a pocket 6 at an end remote from the stress-neutralized layer 3 and a flow guide 7 at an end near the stress-neutralized layer 3. In some embodiments, the cross-sectional shape of the magazine 6 in a direction parallel to the display panel 1 is circular, the cross-sectional shape of the flow guide area 7 in a direction parallel to the display panel 1 is rectangular, and the diameter of the magazine 6 is greater than the width of the flow guide area 7. The length of the flow guide area 7 is a dimension along the second direction Y, and the width of the flow guide area 7 is a dimension perpendicular to the second direction Y.

It should be noted that, in the embodiment of the present disclosure, an exemplary structure of the storage area 6 and the flow guiding area 7 is shown, but the present application is not limited thereto, and in other embodiments, the flow guiding area 7 and the storage area 6 may also adopt other structures.

In this disclosed embodiment, set up storage area 6 and can increase water conservancy diversion portion 4 on the one hand and keeping away from the negative pressure of sizing material one end, increase the mobility of sizing material, prevent to produce the sizing material at the sizing material and the contact position on polarisation layer 2 and pile up, on the other hand, can also increase the area of contact between polarisation layer 2 and the sizing material, increase adhesion.

In another embodiment of the present disclosure, as shown in fig. 8, communication is provided between two adjacent magazines 6, alternatively, communication is provided between some of the magazines 6, or communication is provided between all of the magazines 6. The stock area 6 is, for example, continuous and arranged perpendicular to the extent of the flow guide area 7. The whole structure of water conservancy diversion portion 4 is the T type, can increase the mobile degree of sizing material, improves the roughness, in addition, can also reduce the cover length of water conservancy diversion portion 4. It is to be understood that the shape of the stock areas 6 and the flow guiding areas 7 in the flow guiding part 4 is not limited in this embodiment.

In the embodiment of the present disclosure, the display panel 1 is an OLED flexible display panel 1. Specifically, a display layer may be integrated on the display region D1 of the flexible substrate. The display layer may include a flexible substrate and a display layer disposed on the flexible substrate, and may include various display members such as a thin film transistor, a gate line, a data line, a capacitor, an anode, a cathode, an organic light emitting layer, a color filter, and the like. The flexible substrate is made of polyimide, but the flexible substrate may be made of other flexible materials. The polarizing layer 2 is in this application arranged on top of the display layer to increase the light transmission of the display layer and to reduce the external light reflection. A cover plate for protecting the display panel 1 is further disposed on the polarizing layer 2.

In the embodiment of the present disclosure, the display panel 1 corresponding to the bending region D2 includes a manner of removing a part of the film layer, and the bending performance of the display panel 1 in the bending region D2 is improved by adopting a structure of the stress neutralization layer 3 instead of a part of the film layer. The specific structure for removing the film layer in the non-display area D1 of the display panel 1 is not limited in this application, and in some embodiments, a mode of removing part of the inorganic film layer may be adopted, and the mode of removing the inorganic film layer and adopting the stress neutralizing layer 3 may also reduce the signal wiring fracture caused by the extrusion and the external stress, thereby ensuring the yield of the display panel 1.

In an embodiment of the present application, the material of the stress neutralization layer 3 is a waterproof glue layer, which can prevent external moisture and the like from invading into the display panel 1, thereby causing corrosion of devices.

The display panel 1 includes a display region D1 and a non-display region D1, and the non-display region D1 is provided with an integrated circuit for realizing functions of signal transmission, driving image display, and the like, thereby forming the non-display region D1 of the display panel 1.

Illustratively, the display layer includes a thin film transistor structure layer and a pixel defining layer PDL for defining each pixel region; the thin film transistor TFT array layer may specifically include: an active layer, a gate insulating layer, a gate electrode layer, an interlayer dielectric layer, a source drain electrode layer and a flat layer are sequentially formed on a substrate in a stacked mode. As described above, the structure of the TFT is a top gate type, wherein the structure of the TFT in this embodiment may also be a bottom gate type, and the present embodiment is not limited thereto.

When the display panel 1 is manufactured, the structure of the functional film layer extends from the display region D1 to the non-display region D1, and the display region D1 of the display panel 1 is the same as the hierarchical structure of the non-display region D1 in the prior art, and the height is the same. Therefore, in addition to the metal layers necessary for forming various signal lines, for example, power supply lines (VDD lines, VSS lines), data lines, gate lines, etc., and the organic layers between the metal layers as insulating layers, at the positions corresponding to the non-display region D1, other layers may be removed, for example, the pixel definition layer PDL located in the non-display region D1 may be removed, and the non-display region D1 may be thinned to remove at least a portion of the organic layers. The organic layer can be thinned integrally by dry etching or laser.

It should be noted that, the present application is not limited to the hierarchical structure for removing the non-display area D1, and in different embodiments, the metal routing positions and the arrangement modes of the non-display area D1 are different, and may be selected according to requirements in specific applications. In the thinned non-display region D1, the stress neutralization layer 3 can be aligned on the upper surface away from the display panel 1, thereby increasing the bending stress of the bending region D2.

In this embodiment, the organic layers such as unnecessary flat layers or pixel defining layers in different positions on the non-display region D1 are removed to reduce the thickness of the organic layers, only the organic layers in the necessary positions are retained, the uniformity of the display panel 1 is improved by adding the stress neutralizing layer 3 in the subsequent process, the overall thickness of the bending region D2 is reduced, and the probability of water vapor accumulation in the lower frame is reduced while the flatness is ensured and the bending performance is improved.

It is understood that, when the display panel 1 is bent, only the non-display area D1 of the display panel 1 is bent. In the embodiment of the present disclosure, the bending region is disposed in the non-display region D1, in some embodiments, the bending region may completely correspond to the non-display region D1, and in other embodiments, the bending region may be a partial region of the non-display region D1. The application is not limited to this, and the setting position of the bending area may be adjusted according to the difference of the device or the application scene.

In the embodiment of the present disclosure, the bending region D2 includes a transition segment D5, a bending segment D6, and a routing segment D7, which are continuously disposed in a direction away from the display region D1. After the display panel 1 is bent, the transition section D5 and the display area D1 are located on the same plane, the cross-sectional shape of the transition section D5 is linear, the routing section D7 is parallel to the display area D1, and the cross-sectional shape of the routing section D7 is linear.

Generally, the bent bending region D2 has an arc shape. As shown in fig. 4. Preferably, the bending angle of the bending region D2 after bending is 180 degrees, that is, the route segment D7 is parallel to the display region D1, so that after the bending region D2 is bent, the device in the route segment D7 can be better supported and fixed, the display panel 1 can be better supported and fixed, and meanwhile, the process implementation is also facilitated. In addition, the space occupied by the display panel 1 is effectively reduced.

Various signal traces and driving circuits 9 are disposed in the trace segment D7, and in one embodiment, the driving circuit 9 disposed in the trace segment D7 of the display panel 1 is further included. Specifically, in some embodiments, the driving circuit 9 may employ a COP (Chip On Pi) packaging technology. Of course, in other embodiments, a flexible circuit board may be disposed on the trace end.

In the disclosed embodiment, the transition section D5 includes an extension region D3 and a partial coating region D4 of the stress neutralization layer 3, the coating region D4 of the stress neutralization layer 3 completely covers the bend section D6, and the coating region D4 covers a partial segment D7.

In this application embodiment, be less than kink segment D6's kink stress at changeover portion D5 or walk line section D7, through with coating district D4 setting at partial changeover portion D5 and partial line section D7, can improve the effect of buckling, it is bending stress beginning region to be at changeover portion D5, stress neutralization layer 3 never takes place deformation department and passes through to taking place deformation department, it is bending stress ending region to walk line section D7, stress neutralization layer 3 passes through to not taking place deformation department from taking place deformation department, can prevent that abrupt deformation from making display panel 1 fracture, better promotion display panel 1's bending resistance performance.

Optionally, the display panel 1 is provided with a support layer 8 on a side surface facing away from the polarizing layer 2. Specifically, the support layer 8 is mainly used to fixedly support the display panel 1, so as to prevent the bending region D2 of the display panel 1 from being broken due to an excessive bending degree. The support layer 8 may comprise a multilayer structure. Further, the support layer 8 may be a material having both hardness and elasticity. The support layer 8 may function to support the display panel 1 and also may function to reduce vibration of the display panel 1.

The supporting layer 8 comprises a plurality of hollow structures which are spliced to form a net-shaped structure, and the hollow structures are used for releasing bending stress of the supporting layer 8 so as to avoid stress concentration during bending. Optionally, the shape of the hollow structure includes at least one of a diamond shape, a trapezoid shape, a ring shape, and a fan shape, wherein the hollow structure penetrates through the supporting layer 8. In the present exemplary embodiment, a cut-out structure of rectangular cross section is shown, which can likewise be regarded as an undercut structure. When the hollow structure is applied, the size or the number of the hollow structures can be specifically adjusted according to the bending radius and the like.

In some possible embodiments, the support layer 8 is an alloy steel mesh layer, and of course, other materials may be used for the support layer 8, which is not limited by the embodiments of the present disclosure.

Optionally, a release film 5 is disposed on a side surface of the polarizing layer 2 facing away from the display panel 1, and an orthographic projection of the release film 5 on the display panel 1 is not overlapped with an orthographic projection of the diversion part 4 on the display panel 1.

The release film 5 is removed after the polarizing layer 2 is attached to the display panel 1, and in the embodiment of the present application, the removal of the release film 5 is performed after the stress neutralization layer 3 is formed. Can prevent polarisation layer 2 fish tail, collision in the transportation through leaving type membrane 5, can also avoid simultaneously polarisation layer 2 and the 1 laminating in-process of display panel, to the fish tail etc. of polarisation layer 2.

It should be noted that, in the embodiment of the present disclosure, the position of the release film 5 is avoided from the diversion portion 4, and by means of avoiding, the rubber material is prevented from contacting the release film 5 when flowing in the diversion portion 4, and the connection between the tearing stress neutralization layer 3 and the polarizing layer 2 or the display panel 1 is prevented in the process of removing the release film 5. Release film 5 is the common technical means to the protection of polarisation layer 2 among the prior art, and this application is no longer repeated to material and laminating mode etc. from release film 5.

As shown in fig. 9, the present application provides a method for manufacturing a display module, which is used for manufacturing any one of the above display modules, and the method includes:

s01, providing the display panel 1; the display panel 1 may be an OLED flexible display panel 1.

S02, attaching a polarizing layer 2 to the display panel 1 in an alignment manner, wherein a plurality of flow guide parts 4 are arranged on one side, close to the stress neutralization layer 3, of the polarizing layer 2; in this step, the release film 5 is provided on the polarizing layer 2, and the side of the polarizing layer 2 not bonded to the release film 5 is bonded to the display region D1 of the display panel 1, and as shown in fig. 10, the diversion part 4 is bonded to the position corresponding to the non-display region D1. Wherein, the position of the release film 5 is avoided from the diversion part 4.

S02, coating an organic material on the display panel 1 to form a stress neutralization layer 3, wherein the stress neutralization layer 3 at least fills part of the flow guide part 4, as shown in fig. 11.

In this step, the adhesive of the stress neutralization layer 3 may be coated along the edge of the polarizing layer 2, and after the adhesive is coated, the adhesive naturally flows toward the flow guide portion 4, so that the formed stress neutralization layer 3 at least fills part of the flow guide portion 4. In this step, the sizing material of the stress neutralization layer 3 may be fixed in form by ultraviolet light curing, thereby forming the stress neutralization layer 3.

After step S03, the method for manufacturing the display panel 1 further includes: and S04, removing the release film 5. The hierarchical structure of the display module is shown in FIG. 3.

Based on the same inventive concept, the application provides a display device, which comprises the display module. The display device may be: any product or component with a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator and the like.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Terms such as "disposed" and the like, as used herein, may refer to one element being directly attached to another element or one element being attached to another element through intervening elements. Features described herein in one embodiment may be applied to another embodiment, either alone or in combination with other features, unless the feature is otherwise inapplicable or otherwise stated in the other embodiment.

The present invention has been described in terms of the above embodiments, but it should be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the invention to the described embodiments. It will be appreciated by those skilled in the art that many variations and modifications are possible in light of the above teaching and are within the scope of the invention as claimed.

Claims

1. A display module, comprising:

2. The display module according to claim 1, wherein the stress neutralization layer comprises a coating area and an extension area, an orthographic projection of the coating area on the display panel is overlapped with an orthographic projection of the edge of the polarization layer on the display panel, and an orthographic projection of the flow guide part on the display panel at least covers an orthographic projection of the extension area on the display panel.

3. The display module of claim 1, wherein the flow guide penetrates the polarizing layer in a direction perpendicular to the display panel.

4. The display module according to claim 1, wherein a plurality of the flow guiding portions are arranged in an array along a first direction in the bending region, and the flow guiding portions extend along a second direction to an edge of the polarizing layer.

5. The display module of claim 1, wherein the height of the stress neutralization layer in the direction perpendicular to the display panel is not more than the height of the polarizing layer in the direction perpendicular to the display panel.

6. The display module according to claim 1, wherein the display panel is provided with a supporting layer on a surface of a side facing away from the polarizing layer.

7. The display module of claim 1, wherein the stress neutralization layer is an organic material.

8. The display module according to claim 1, wherein the polarizing layer is provided with a release film on a surface of a side facing away from the display panel, and an orthographic projection of the release film on the display panel does not overlap with an orthographic projection of the diversion part on the display panel.

9. A method for manufacturing a display module according to any one of claims 1 to 8, the method comprising:

providing a display panel;

10. A display device comprising the display module according to any one of claims 1 to 8.