CN115311942B - Display module and display device - Google Patents

The embodiment of the application provides a display module and a display device, relates to the technical field of display, and is used for solving the technical problem that a crease appears in the display module after multiple bending. The display module comprises a flexible display panel and a supporting layer, wherein the flexible display panel is provided with a bending region, two transition regions and two non-bending regions, the two transition regions are respectively connected to two opposite sides of the bending region, and the two non-bending regions are respectively connected to one sides of the two transition regions far away from the bending region; the supporting layer comprises a bending supporting part, two transition supporting parts and two non-bending supporting parts, wherein the bending supporting part, the transition supporting parts and the non-bending supporting parts are respectively arranged opposite to the bending area, the transition area and the non-bending area, the elastic modulus of the bending supporting parts is smaller than that of the transition supporting parts, and the elastic modulus of the transition supporting parts is smaller than that of the non-bending supporting parts. The display module can lighten or eliminate folds of the display module.

Display module and display device

Technical Field

The present application relates to the field of display technologies, and in particular, to a display module and a display device.

Background

With the development of display technology, flexible display devices, such as folding mobile phones and folding tablet computers, have received attention. However, the display module in the bendable display device may have folds after being bent for many times, which affects the display effect of the display device.

Disclosure of Invention

In view of the above problems, an embodiment of the present application provides a display module and a display device, so as to solve the technical problem that a crease occurs in the display module after multiple bending.

In order to achieve the above object, the embodiment of the present application provides the following technical solutions:

the first aspect of the embodiment of the application provides a display module, which comprises a flexible display panel and a supporting layer arranged on the back surface of the flexible display panel, wherein the flexible display panel is provided with a bending region, two transition regions and two non-bending regions, the two transition regions are respectively connected to two opposite sides of the bending region, and the two non-bending regions are respectively connected to one sides of the two transition regions away from the bending region; when the flexible display panel is in a bending state, the bending curvature of the bending region is larger than that of the transition region;

the support layer comprises a bending support part, two transition support parts and two non-bending support parts, wherein the two transition support parts are respectively positioned at two opposite sides of the bending support part, and the two non-bending support parts are respectively positioned at one side of the two transition support parts away from the bending support part; the bending support portion, the transition support portion and the non-bending support portion are respectively arranged opposite to the bending region, the transition region and the non-bending region, the elastic modulus of the bending support portion is smaller than that of the transition support portion, and the elastic modulus of the transition support portion is smaller than that of the non-bending support portion.

When the display module is in a bending state, the elasticity modulus of the bending support part is smaller than that of the transition support part, and the elasticity modulus of the transition support part is smaller than that of the non-bending support part, so that the flexibility of the bending support part is larger than that of the transition support part, and the flexibility of the transition support part is larger than that of the non-bending support part. When the display module is bent for many times, the plastic deformation quantity generated by the bending support part and the transition support part can be reduced or eliminated, so that the crease of the display module is reduced or eliminated, and the display effect of the display device is further ensured.

In some possible implementations, the material of the bending support comprises polyimide or polyethylene terephthalate; the material of the transition support part comprises at least one of titanium alloy, magnesium aluminum alloy or nickel titanium alloy; the material of the non-bending support part comprises stainless steel.

In some possible implementations, the material of the non-bending support portion includes stainless steel, the material of the bending support portion and the material of the transition support portion each include nickel-titanium alloy, and the thickness of at least a portion of the region within the bending support portion is less than the thickness of the transition support portion.

In some possible implementations, the bending support is provided with a through hole or a groove;

or, the bending support part is nickel-titanium alloy fiber fabric.

In some possible implementations, a first gap is provided between the bending support portion and the transition support portion, a second gap is provided between the transition support portion and the non-bending support portion, and the widths of the first gap and the second gap are each less than or equal to 100 μm.

In some possible implementations, the display module further includes a support film that is located between the flexible display panel and the support layer and connects the flexible display panel and the support layer.

In some possible implementations, the support film includes a base film and two adhesive layers located at both sides of the base film, one of the adhesive layers adhering to the flexible display panel, and the other adhesive layer adhering to the support layer.

A second aspect of the embodiment of the present application provides a display device, including a folding mechanism and a display module set as any one of the above; the folding mechanism comprises a rotating shaft, two first supporting plates and two second supporting plates, wherein the two first supporting plates are respectively positioned at two sides of the rotating shaft and are rotationally connected with the rotating shaft around a first axis, and the first axis is parallel to the axis of the rotating shaft; the two second support plates are respectively positioned at one side of the two first support plates far away from the rotating shaft, and are respectively connected with the two first support plates in a rotating way around a second axis which is parallel to the axis of the rotating shaft; the display module is connected to the first support plate and the second support plate.

The display device according to the embodiment of the present application, because of including any one of the display modules described above, also includes the advantages of any one of the display modules described above, and the embodiments of the present application will not be repeated.

In some possible implementations, an orthographic projection of the bending support portion on the folding mechanism covers the rotating shaft and intersects the first support plate; orthographic projection of the transition supporting part on the folding mechanism is intersected with the second supporting plate and the first supporting plate; the orthographic projection of the non-bending support part on the folding mechanism is positioned in the second support plate.

In some possible implementations, the display device further includes a connection glue layer, the connection glue layer being located between the display module and the folding mechanism and connecting the display module and the folding mechanism.

In some possible implementations, the connection glue layer includes a first glue body, a second glue body and a third glue body that are disposed at intervals, and the first glue body bonds the first support plate and the transition support portion; the second colloid is used for bonding the second supporting plate and the transition supporting part; the third colloid is used for bonding the second supporting plate and the non-bending supporting part.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic cross-sectional view of a display device according to an embodiment of the application;

FIG. 2 is a schematic diagram of the display device of FIG. 1 when bent;

fig. 3 is a schematic diagram of the display device of fig. 1 when assembled.

Reference numerals illustrate:

10. a display module;

110. a flexible display panel; 111. A bending region;

112. a transition zone; 113. A non-inflection region;

114. a flexible substrate; 115. A display layer;

120. a support layer; 121. Bending the supporting part;

122. a transition support; 123. A non-bending support portion;

124. a receiving groove; 130. A support film;

131. a base film; 132. An adhesive layer;

140. a touch layer; 150. A first connection layer;

160. a polarizing layer; 170. A second connection layer;

180. a cover plate;

20. a folding mechanism;

210. a rotating shaft; 220. A first support plate;

230. a second support plate;

30. connecting the adhesive layer;

310. a first colloid; 320. A second colloid;

330. and a third colloid.

Detailed Description

As described in the background art, there is a technical problem in the related art that a display module is folded several times. The inventor has long studied and found that the reason is that the display module comprises a flexible display panel and a supporting layer arranged on the back surface of the flexible display panel, wherein the supporting layer is usually a thin layer of metal. When the display module is bent, the thin metal layer generates stress under the action of bending force, so that strain is generated. The elastic modulus of the thin metal is large, and after the display module is bent for many times, the stress generated by the thin metal exceeds the elastic limit of the thin metal, so that the thin metal generates irreversible plastic deformation. After the bending force is removed, the thin metal cannot be restored to a flat state before bending, so that the display module generates folds.

In view of the above technical problems, the support layer of the display module according to the embodiment of the present application includes a bending support portion, a transition support portion, and a non-bending support portion, where the bending support portion, the transition support portion, and the non-bending support portion are disposed opposite to a bending region, a transition region, and a non-bending region of the flexible display panel, respectively, and an elastic modulus of the bending support portion is smaller than an elastic modulus of the transition support portion, and an elastic modulus of the transition support portion is smaller than an elastic modulus of the non-bending support portion. The display module provided by the embodiment of the application can enable the flexibility of the bending support part to be greater than that of the transition support part, and the flexibility of the transition support part is greater than that of the non-bending support part. When the display module is in a bending state, the plastic deformation quantity generated by the bending support part and the transition support part can be reduced or eliminated, so that the crease of the display module is reduced or eliminated, and the display effect of the display device is further ensured.

In order to make the above objects, features and advantages of the embodiments of the present application more comprehensible, the technical solutions of the embodiments of the present application will be described clearly and completely with reference to the accompanying drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

It should be noted that the dimensions and shapes of the figures in the drawings do not reflect true proportions, and are intended to illustrate only the embodiments of the present application. And the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout.

Referring to fig. 1, an embodiment of the present application provides a display device including a display module 10 and a folding mechanism 20. The display module 10 is disposed on the folding mechanism 20, and the display module 10 has a folded state and an unfolded state. The folding mechanism 20 can support the display module 10 in both the folded state and the unfolded state to prevent the display module 10 from wrinkling, thereby ensuring the display effect of the display device.

Referring to fig. 1, a display module 10 according to an embodiment of the present application may include a flexible display panel 110 and a support layer 120 disposed on a back surface of the flexible display panel 110. The flexible display panel 110 is used for displaying images, and has a bendable property. The flexible display panel 110 has a bending region 111, two transition regions 112, and two non-bending regions 113, wherein the two transition regions 112 are respectively connected to two opposite sides of the bending region 111, and the two non-bending regions 113 are respectively connected to one sides of the two transition regions 112 away from the bending region 111. For example, the two transition regions 112 and the two non-inflection regions 113 may be symmetrically disposed with respect to the centerline of the inflection region 111.

Referring to fig. 1, when the flexible display panel 110 is in the unfolded state, none of the inflection region 111, the transition region 112 and the non-inflection region 113 is folded, and the inflection region 111, the transition region 112 and the non-inflection region 113 are unfolded to be planar. Referring to fig. 2, when the flexible display panel 110 is in a folded state, both the folding region 111 and the transition region 112 are folded, and the folding curvature of the folding region 111 is greater than that of the transition region 112. Illustratively, the bending direction of the bending region 111 and the bending direction of the transition region 112 may be opposite to form the flexible display panel 110 into a water-drop type bending, thereby reducing the thickness of the flexible display panel 110 in a bent state, which is advantageous for the thinning of the display device.

The flexible display panel 110 may be an organic light emitting diode (Organic Light Emitting Diode, abbreviated as OLED) flexible display panel, for example. Referring to fig. 1, the flexible display panel 110 may include a flexible substrate 114 and a display layer 115. The flexible substrate 114 provides a supporting function for each film layer located thereabove, and the flexible substrate 114 has a bendable function. Illustratively, the material of the flexible substrate 114 may include at least one of Polyimide (PI), polyethylene terephthalate (Polyethylene Terephthalate, PET) and polyethylene naphthalate (PEN). The material of the flexible substrate 114 may also include other flexible materials, which are not described in detail in the embodiments of the present application.

The display layer 115 is formed on the flexible substrate 114. The display layer 115 may include a driving array layer, a light emitting layer, and a package layer (not shown in the drawing) sequentially stacked on the flexible substrate 114. The driving array layer has a plurality of thin film transistors arranged in a matrix. The light-emitting layer is arranged on the driving array layer, the light-emitting layer is provided with a plurality of light-emitting units which are arranged in a matrix, and the light-emitting unit array is correspondingly arranged with the thin film transistor array and is electrically connected with the thin film transistor array so as to control the light-emitting units through the thin film transistor, thereby realizing the display of images. The encapsulation layer is disposed on the light emitting layer, and is used for encapsulating the light emitting layer, so as to prevent external moisture, oxygen, etc. from entering the light emitting layer to affect the display performance of the flexible display panel 110.

It is understood that the flexible display panel 110 may be another type of flexible display panel, which is not described in detail in the embodiments of the present application.

The supporting layer 120 is disposed on the back surface of the flexible display panel 110 to support the flexible display panel 110, thereby improving the flatness of the flexible display panel 110 and ensuring the display effect of the display module 10.

Referring to fig. 1, the support layer 120 may include a bending support portion 121, two transition support portions 122 and two non-bending support portions 123, wherein the two transition support portions 122 are respectively located at two opposite sides of the bending support portion 121, and the two non-bending support portions 123 are respectively located at one side of the two transition support portions 122 away from the bending support portion 121. The bending support portion 121, the transition support portion 122 and the non-bending support portion 123 are disposed opposite to the bending region 111, the transition region 112 and the non-bending region 113, respectively, the elastic modulus of the bending support portion 121 is smaller than that of the transition support portion 122, and the elastic modulus of the transition support portion 122 is smaller than that of the non-bending support portion 123.

When the display module 10 is in a bending state, since the elastic modulus of the bending support portion 121 is smaller than that of the transition support portion 122, and the elastic modulus of the transition support portion 122 is smaller than that of the non-bending support portion 123, the flexibility of the bending support portion 121 is greater than that of the transition support portion 122, and the flexibility of the transition support portion 122 is greater than that of the non-bending support portion 123, the plastic deformation amount generated by the bending support portion 121 and the transition support portion 122 when the display module 10 is bent for many times can be reduced or eliminated, so that the crease of the display module 10 is reduced or eliminated, and the display effect of the display device is further ensured.

In addition, when the display module 10 is in the bending state, the bending curvature of the bending region 111 of the flexible display panel 110 is greater than the bending curvature of the transition region 112, so that the bending curvature of the bending support portion 121 of the support layer 120 is greater than the bending curvature of the transition support portion 122. Since the elastic modulus of the bending support portion 121 is set smaller than that of the transition support portion 122, the flexibility of the transition support portion 122 is smaller than that of the bending support portion 121, i.e., the rigidity of the transition support portion 122 is greater than that of the bending support portion 121. By such arrangement, the amount of plastic deformation of the transition support 122 can be reduced or eliminated, and the transition support 122 can be made sufficiently rigid to avoid creasing of the transition region 112, while also providing support for the transition region 112.

Moreover, the bending support portion 121 and the transition support portion 122 can also improve the impact resistance of the support layer 120, prevent the display module 10 from being damaged due to impact, and prolong the service life of the display module 10.

Illustratively, the material of the bending support 121 may include Polyimide (PI) or polyethylene terephthalate (PET). The polyimide and polyethylene terephthalate have a small elastic modulus, and can reduce or eliminate the amount of plastic deformation generated by bending the supporting portion 121 after the display module 10 is bent for a plurality of times. The material of the transition support 122 may include at least one of a titanium alloy, a magnesium aluminum alloy, or a nickel titanium alloy. The elastic modulus of the titanium alloy, the magnesium aluminum alloy or the nickel titanium alloy is larger than that of polyimide and polyethylene terephthalate, so that the bending can be realized, certain rigidity is realized, crease marks of the transition area 112 can be avoided, and meanwhile, a supporting effect can be provided for the transition area 112. The material of the non-bending support part 123 may include stainless steel, such as SUS301 or SUS 304. The stainless steel has the advantages of high rigidity, low cost, good support and the like, can provide a support effect for the non-bending region 113 of the flexible display panel 110, and improves the flatness of the non-bending region 113.

Illustratively, the material of the non-bending support 123 may also include stainless steel, such as SUS301 or SUS304, and the like. The materials of the bending support part 121 and the transition support part 122 may each include nickel-titanium alloy, and the thickness of at least a partial region within the bending support part 121 is smaller than the thickness of the transition support part 122. The nickel-titanium alloy has a shape memory function. When the display module 10 is bent, the nickel-titanium alloy generates a strain larger than the elastic limit strain amount under the action of bending force. When the bending force is removed, the nickel-titanium alloy can automatically return to a flat state before bending, so that the display module 10 is prevented from generating folds.

The thickness of at least a portion of the bending support portion 121 is smaller than the thickness of the transition support portion 122, so that the elastic modulus of the bending support portion 121 is smaller than the elastic modulus of the transition support portion 122. Illustratively, the bending support 121 may be provided with a through hole or a groove. The bending support portion 121 may also be a nitinol fiber fabric.

In some implementations of the embodiments of the present disclosure, the bending support portion 121, the transition support portion 122, and the non-bending support portion 123 may abut against each other to completely support the flexible display panel 110, so as to avoid wrinkling of the flexible display panel 110.

In other implementations of the embodiments of the present disclosure, a first gap (not shown in the drawings) may be formed between the bending support part 121 and the transition support part 122, and a second gap (not shown in the drawings) may be formed between the transition support part 122 and the non-bending support part 123, and the widths of the first gap and the second gap may be less than or equal to 100 μm, for example, the widths of the first gap and the second gap may be 80 μm, 90 μm, or 100 μm. When the flexible display panel 110 is in the unfolded state, since the widths of the first and second gaps are less than or equal to 100 μm, the widths of the first and second gaps are small, and the flexible display panel 110 does not dent between the first and second gaps. When the flexible display panel 110 is in a bending state, the non-bending support portion 123, the transition support portion 122 and the bending support portion 121 are all elastically deformed, so that the non-bending support portion 123, the transition support portion 122 and the bending support portion 121 are mutually abutted to form a complete support for the flexible display panel 110.

So set up, supporting layer 120 can support flexible display panel 110, when display module 10 is buckled, can also reduce the bending stress that produces between non-buckling supporting portion 123, transition supporting portion 122 and the supporting portion 121 of buckling to further reduce the plastic deformation volume that non-buckling supporting portion 123, transition supporting portion 122 and the supporting portion 121 of buckling produced, thereby alleviate or eliminate the crease of display module 10. In addition, the bending force required by bending the supporting layer 120 is reduced, and convenience in bending the display module 10 is improved.

Referring to fig. 1, the display module 10 may further include a support film 130, the support film 130 being located between the flexible display panel 110 and the support layer 120 and connecting the flexible display panel 110 and the support layer 120. The support film 130 plays a role in reinforcing and supporting the flexible display panel 110, preventing the flexible display panel 110 from being abnormal in function. Illustratively, the support film 130 may include a base film 131 and two adhesive layers 132 positioned at both sides of the base film 131, one adhesive layer 132 adhering to the flexible display panel 110 and the other adhesive layer 132 adhering to the support layer 120. Illustratively, the number of support films 130 may be one or more, and embodiments of the present application are not particularly limited thereto.

For example, referring to fig. 1, the display module 10 may further include a touch layer 140, a polarizing layer 160, and a cover plate 180 stacked on the flexible display panel 110. The touch layer 140 is used for realizing the touch function of the display module 10. Illustratively, the touch layer 140 may be formed on an encapsulation layer of the flexible display panel 110. The polarizing layer 160 is used to eliminate the ambient light reflected by the electrode layer in the flexible display panel 110, so as to ensure the display effect of the flexible display panel 110. The polarizing layer 160 and the touch layer 140 may be connected through the first connection layer 150. Illustratively, the first connection layer 150 may be an optical cement layer. The cover plate 180 is used for protecting the flexible display panel 110, preventing the flexible display panel 110 from being scratched, worn, etc., thereby prolonging the service life of the display module 10. The cover plate 180 and the polarizing layer 160 may be connected by the second connection layer 170. The second connection layer 170 may be an optical adhesive layer, for example. Illustratively, the materials of the optical cement layer include, but are not limited to, acrylic and methacrylic optical cement satisfy a light transmittance of 90% or more and have a good connection strength. Illustratively, the first connection layer 150 and the second connection layer 170 may have a thickness of 15 to 200 μm.

When the display module 10 is in the unfolded state and the bending state, the folding mechanism 20 can play a supporting role on the display module 10, so that the display module 10 is always in a state with controllable shape, and the shape stability of the display module 10 during bending is improved. Illustratively, referring to fig. 1, the folding mechanism 20 may include a rotating shaft 210, two first support plates 220, and two second support plates 230, where the two first support plates 220 are respectively located at two sides of the rotating shaft 210 and are rotatably connected with the rotating shaft 210 about a first axis, and the first axis is parallel to the axis of the rotating shaft 210. The two second support plates 230 are respectively located at one sides of the two first support plates 220 away from the rotating shaft 210, and the two second support plates 230 are respectively connected with the two first support plates 220 in a rotating manner around a second axis, wherein the second axis is parallel to the axis of the rotating shaft 210. The display module 10 is coupled to the first support plate 220 and the second support plate 230. It should be noted that, the axis of the rotating shaft 210 is parallel to the direction perpendicular to the paper surface in fig. 1, i.e., parallel to the y direction shown in fig. 1.

Referring to fig. 1, an orthographic projection of the bending support portion 121 of the support layer 120 on the folding mechanism 20 may cover the rotation axis 210 and intersect the first support plate 220. The front projection of the transition support 122 on the folding mechanism 20 intersects both the first support plate 220 and the second support plate 230, i.e. the front projection of the transition support 122 on the folding mechanism 20 covers the junction of the first support plate 220 and the second support plate 230. The orthographic projection of the non-bending support 123 on the folding mechanism 20 is located in the second support plate 230.

Referring to fig. 1, when the folding mechanism 20 is in the unfolded state, the rotating shaft 210, the first supporting plate 220 and the second supporting plate 230 are all unfolded, and the upper surfaces of the rotating shaft 210, the first supporting plate 220 and the second supporting plate 230 are located in the same plane, so that the supporting layer 120 and the flexible display panel 110 are in the unfolded state, and the flatness of the supporting layer 120 and the flexible display panel 110 can be improved, so that the display effect of the display module 10 is ensured.

Referring to fig. 2, when the folding mechanism 20 is in a folded state, the two first support plates 220 rotate around the first axis relative to the rotating shaft 210, so that the folding support portion 121 and the folding region 111 are folded; the two second support plates 230 rotate reversely around the second axis relative to the first support plates 220, so that the transition support portions 122 and the transition regions 112 are reversely folded, and the bending curvatures of the transition support portions 122 and the transition regions 112 are smaller than those of the bending support portions 121 and the bending regions 111, so that the support layer 120 and the flexible display panel 110 are in a bending state, i.e. a water drop-shaped bending is formed.

Referring to fig. 1, the display device may further include a connection adhesive layer 30, the connection adhesive layer 30 being located between the display module 10 and the folding mechanism 20, and connecting the display module 10 and the folding mechanism 20. The display module 10 and the folding mechanism 20 are bonded through a connecting adhesive layer 30.

Illustratively, the adhesive layer 30 may be a whole layer of adhesive to increase the adhesive area with the display module 10 and the folding mechanism 20, thereby improving the connection reliability between the display module 10 and the folding mechanism 20.

The connection glue layer 30 may also be provided separately, for example. Referring to fig. 1, the connection glue layer 30 includes a first glue body 310, a second glue body 320 and a third glue body 330 that are disposed at a distance from each other, and the first glue body 310 is adhered to the first support plate 220 and the transition support portion 122. The second glue 320 adheres the second support plate 220 and the transition support 122. The third glue body 330 adheres the second support plate 230 and the non-bending support portion 123. Referring to fig. 2, when the supporting layer 120 and the flexible display panel 110 are in a bending state, the transition supporting portion 122 is bent by a bending force, and the first colloid 310, the second colloid 320 and the third colloid 330 do not contact each other when the transition supporting portion 122 is bent, so that bending stress generated inside the connection adhesive layer 30 can be reduced, and the connection between the supporting layer 120 and the folding mechanism 20 is prevented from being affected due to the damage inside the connection adhesive layer 30; while also avoiding the connection glue layer 30 from affecting the bending shape of the transition support 122.

In assembling the display module 10 and the folding mechanism 20, the bending support portion 121, the transition support portion 122, and the non-bending support portion 123 may be connected to the back surface of the flexible display panel 110, for example, may be adhered to the base film 131 through the adhesive layer 132. Then, the first, second and third colloids 310, 320 and 330 are formed on the first and second support plates 220, 230, respectively. And the transition supporting portion 122 and the non-bending supporting portion 123 are correspondingly adhered to the first colloid 310, the second colloid 320 and the third colloid 330.

In assembling the display module 10 and the folding mechanism 20, referring to fig. 3, for example, first, second, and third colloids 310, 320, and 330 may be formed on the first and second support plates 220, 230, respectively. The transition supporting portion 122 and the non-bending supporting portion 123 are correspondingly adhered to the first colloid 310, the second colloid 320 and the third colloid 330, and the accommodating groove 124 is formed between the two transition supporting portions 122. An adhesive layer 132 is formed on the transition support portion 122 and the non-bending support portion 123. Then, the bending support portion 121 is connected to the back surface of the flexible display panel 110, and may be bonded to the base film 131 through the adhesive layer 132, for example. The bending support portion 121 is placed in the accommodating groove 124, and the transition support portion 122 and the non-bending support portion 123 are adhered to the base film 131 through the adhesive layer 132, i.e., connected to the back surface of the flexible display panel 110. In this assembly process, the transition supporting portion 122 and the non-bending supporting portion 123 are bonded to the first supporting plate 220 and the second supporting plate 230 through the first colloid 310, the second colloid 320 and the third colloid 330, and the rigidity of the first supporting plate 220 and the second supporting plate 230 is greater than the rigidity of the base film 131 and the flexible display panel 110, so that the position accuracy of the transition supporting portion 122 and the non-bending supporting portion 123 can be improved, and the position accuracy between the display module 10 and the folding mechanism 20 is improved, and the display effect of the display device is further ensured.

It is noted that in general terms should be understood, at least in part, by the use of context. For example, the term "one or more" as used herein may be used to describe any feature, structure, or characteristic in a singular sense, or may be used to describe a combination of features, structures, or characteristics in a plural sense, at least in part depending on the context. Similarly, terms such as "a" or "an" may also be understood to convey a singular usage or a plural usage, depending at least in part on the context.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application.