CN113393773A - Flexible display module, preparation method thereof and display device - Google Patents
Flexible display module, preparation method thereof and display device Download PDFInfo
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- CN113393773A CN113393773A CN202110733045.XA CN202110733045A CN113393773A CN 113393773 A CN113393773 A CN 113393773A CN 202110733045 A CN202110733045 A CN 202110733045A CN 113393773 A CN113393773 A CN 113393773A
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- 238000002360 preparation method Methods 0.000 title claims abstract description 7
- 230000008093 supporting effect Effects 0.000 claims abstract description 167
- 238000005452 bending Methods 0.000 claims abstract description 58
- 239000002184 metal Substances 0.000 claims description 13
- 239000012528 membrane Substances 0.000 claims description 6
- 125000006850 spacer group Chemical group 0.000 claims description 2
- 230000013011 mating Effects 0.000 claims 1
- 238000000034 method Methods 0.000 description 24
- 229910052755 nonmetal Inorganic materials 0.000 description 15
- 239000007769 metal material Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000059 patterning Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
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Abstract
The application discloses flexible display module assembly and preparation method, display device thereof, flexible display module assembly have plane district and bending zone, and this flexible display module assembly includes: a flexible display panel comprising a display surface and a non-display surface that are opposite to each other; the supporting layer is arranged on one side of the non-display surface of the flexible display panel and comprises a first supporting portion and a second supporting portion which are connected, the first supporting portion is distributed corresponding to the bending area, the first supporting portion comprises a first film layer and a second film layer which are stacked in the thickness direction of the supporting layer, at least one of the first film layer and the second film layer is provided with a plurality of holes, and the surface of one side, facing the flexible display panel, of the first supporting portion is a flat surface which is flush with the second supporting portion. The application provides a flexible display module, a preparation method thereof and a display device, and avoids generating film prints while improving the bending performance of a flexible display screen.
Description
Technical Field
The application relates to the technical field of electronic products, in particular to a flexible display module, a manufacturing method of the flexible display module and a display device.
Background
With the development of display technology, electronic devices on the market and on display at present have a folding form, which is basically divided into two-fold (inward folding, outward folding) and three-fold (double inward folding, double outward folding and inward and outward folding) forms, so that the screen size can be switched according to the requirement in the form of a folding screen. During the use process of the folding screen, in order to enable the folding screen to be bent to a required position when needed, the folding screen has enough bending performance and the capability of maintaining the corresponding position is required to provide a supporting force for the flexible display screen. The supporting layer is arranged on one side of the flexible display panel, which deviates from the display surface, to provide support, but in the existing flexible screen with the supporting layer, the bending performance of the display screen is reduced by the arrangement of the supporting layer, and the display performance of a folding product is not facilitated.
Therefore, a new scheme for ensuring the bending performance of the display screen is needed.
Disclosure of Invention
The embodiment of the application provides a flexible display module, a preparation method thereof and a display device, and the flexible display module can be used for improving the bending performance of a flexible display screen and avoiding generation of film prints.
An aspect of the embodiments of the present application provides a flexible display module assembly, and this flexible display module assembly has plane district and bending zone, and flexible display module assembly includes: a flexible display panel comprising a display surface and a non-display surface that are opposite to each other; the supporting layer is arranged on one side of the non-display surface of the flexible display panel and comprises a first supporting portion and a second supporting portion which are connected, the first supporting portion is distributed corresponding to the bending area, the first supporting portion comprises a first film layer and a second film layer which are stacked in the thickness direction of the supporting layer, at least one of the first film layer and the second film layer is provided with a plurality of holes, and the surface of one side, facing the flexible display panel, of the first supporting portion is a flat surface which is flush with the second supporting portion.
According to one aspect of the present application, the first film layer is located on a side of the second film layer facing the flexible display panel, and the flat surface is a surface of the first film layer facing away from the side of the second film layer.
According to one aspect of the application, the plurality of holes are arranged through the second film layer in the thickness direction of the support layer; and/or the plurality of holes are non-through holes arranged on the first film layer in the thickness direction of the support layer, and the non-through holes are communicated with the holes communicated with the second film layer and are in one-to-one correspondence.
According to one aspect of the present application, a surface of the second film layer facing away from the flexible display panel has a recess, and the recess is recessed toward the first film layer along the thickness direction of the support layer.
According to one aspect of the present application, the first film layer is an opaque non-metallic layer and the second film layer is a metallic layer; the thickness of the metal layer is less than the thickness of the second support layer and less than 50 microns.
According to an aspect of the present application, the flexible display module further includes a connection portion, the connection portion is located on the first film layer, and at least a portion of the connection portion extends into the plurality of holes located on the second film layer to connect the first film layer and the second film layer.
According to an aspect of the application, the first supporting portion further includes a third film layer, the third film layer is located on one side of the flexible display panel away from the second film layer, and a lower surface of the third film layer is flush with a lower surface of the second supporting portion.
According to one aspect of the application, the second support is provided with a plurality of protrusions towards the side wall of the first support, at least one of the first membrane layer and the second membrane layer is provided with a recess cooperating with the protrusions, and the protrusions at least partially extend into the recess for connecting the first support and the second support.
On the other hand, the embodiment of the application provides a display device, display device includes flexible display module assembly, flexible display module assembly is the flexible display module assembly that describes in the aforesaid.
In another aspect, an embodiment of the present application provides a method for manufacturing a flexible display module, where the method includes: providing a flexible display panel; forming second supporting parts corresponding to the display area on the back side of the flexible display panel, wherein two adjacent second supporting parts are distributed at intervals through a spacing part; the spacer portion forms a first supporting portion, the first supporting portion comprises a first film layer and a second film layer which are stacked, at least one of the first film layer and the second film layer is provided with a plurality of holes, and the surface of the first supporting portion, facing the flexible display panel, on one side is a flat surface flush with the second supporting portion.
Compared with the prior art, the flexible display module and the display device provided by the embodiment of the application have the advantages that the flexible display module is provided with a plane area and a bending area and comprises a flexible display panel and a supporting layer, and the flexible display panel comprises a display surface and a non-display surface which are opposite; the supporting layer is arranged on one side of a non-display surface of the flexible display panel and comprises a first supporting portion and a second supporting portion which are connected, the first supporting portion is distributed corresponding to the bending area, the first supporting portion comprises a first film layer and a second film layer which are stacked in the thickness direction of the supporting layer, at least one of the first film layer and the second film layer is provided with a plurality of holes, and the surface of the first supporting portion, facing one side of the flexible display panel, is a flat surface which is flushed with the second supporting portion. The supporting layer is correspondingly divided into a first supporting part and a second supporting part which are connected according to the distribution condition of the plane area and the bending area, the supporting force is provided for the flexible display panel through the first supporting part and the second supporting part, the first supporting part corresponding to the bending area is divided into a first film layer and a second film layer, and at least one of the two film layers is provided with a plurality of holes, so that the supporting layer is guaranteed to have enough supporting force to support the flexible display panel, and the stress concentration of the part is avoided from influencing the bending effect during folding.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a flexible display module according to an embodiment of the present disclosure in a flattened state, wherein a direction indicated by an arrow L is a first direction;
fig. 2 is a schematic structural diagram of a folded state of a flexible display module according to an embodiment of the present disclosure;
fig. 3 is an exploded view of a front view of a flexible display module according to an embodiment of the present disclosure;
FIG. 4 is a cross-sectional front view of a support layer in a flexible display module according to an embodiment of the present disclosure;
FIG. 5 is a cross-sectional front view of a support layer in a first flexible display module according to an embodiment of the present disclosure;
FIG. 6 is a cross-sectional front view of a support layer in a second flexible display module according to an embodiment of the present disclosure;
FIG. 7 is a cross-sectional front view of a support layer of a third flexible display module according to an embodiment of the present disclosure;
FIG. 8 is a cross-sectional front view of a support layer of a fourth flexible display module according to an embodiment of the present disclosure;
FIG. 9 is a cross-sectional front view of a support layer in a fifth flexible display module according to an embodiment of the present disclosure
Fig. 10 is a cross-sectional front view of a connection portion of a support layer in a flexible display module according to an embodiment of the present disclosure;
fig. 11 is a top view of a support layer in a flexible display module according to an embodiment of the present disclosure.
In the drawings:
1-a flexible display module; 11-virtual axis; 12-a flexible display panel; 121-a display surface; 122-non-display surface; 13-a support layer; 131-a second support; 131 a-a first surface; 131 b-a second surface; 131 c-a recess; 132-a first support; 132 a-a first film layer; 132 b-a second film layer; 132 c-a third film layer; 132 d-projection; 133-hole; 133 a-a first aperture; 133 b-a second aperture; 134-flat surface; 135-a recess; 135 a-a third surface; 136-a connecting portion; d1-bending zone; d2-planar area.
Detailed Description
Features and exemplary embodiments of various aspects of the present application will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present application by illustrating examples thereof.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
For better understanding of the present application, a flexible display module, a manufacturing method thereof, and a display device according to an embodiment of the present application are described in detail below with reference to fig. 1 to 10.
Referring to fig. 1 and fig. 2, an embodiment of the present application provides a flexible display module, the flexible display module has a display area, and the flexible display module 1 has a plane area D2 and a bending area D1 corresponding to the display area, for example, in the two-fold flexible display module 1, two sides of the bending area D1 of the flexible display module 1 in the first direction L are the plane areas D2, and the flexible display module 1 includes a flat state and a folded state. As shown in the flat state of fig. 1, the bending region D1 and the plane region D2 are both located on the same horizontal plane, when the flat state is converted to the folded state of fig. 2, the flexible display module 1 in the bending region D1 is bent to the required bending angle along the virtual axis 11 (perpendicular to the first direction L), the surfaces of the flexible display modules 1 in the plane regions D2 on both sides respectively maintain a flat plane, and the included angle between the two is the bending angle of the flexible display module 1 in the bending region D1, so as to meet different folding requirements of the flexible display module 1. Of course, the three-fold or more than three-fold flexible display module 1 is sequentially adjusted adaptively, and is not limited in particular, and the following description will take the two-fold flexible display module 1 as an example.
Referring to fig. 3, the flexible display module 1 includes a flexible display panel 12 and a supporting layer 13, and the flexible display panel 12 includes a display surface 121 and a non-display surface 122 opposite to each other. The support layer 13 is disposed on the non-display surface 122 side of the flexible display panel 12, and the disposed support layer 13 can provide a supporting force for the flexible display panel 12, so that the flexible display module 1 can be maintained in a flat state or a folded state at least according to requirements. In order to ensure the better supporting performance of the supporting layer 13, the supporting layer 13 is generally made of a metal structure, such as a stainless steel plate, and the supporting layer 13 of the metal can realize the supporting, and is limited by the strength of the supporting layer, when the flexible display module 1 is bent, the supporting layer 13 has a certain bending resistance, which reduces the bending performance of the flexible display module 1.
Referring to fig. 3 and 4, in order to avoid the disposed support layer 13 from reducing the bending performance of the flexible display module 1, the support layer 13 includes a first support portion 132 and a second support portion 131 connected to each other, the first support portion 132 is distributed corresponding to the bending region D1, the first support portion 132 includes a first film layer 132a and a second film layer 132b stacked in the thickness direction of the support layer 13, at least one of the first film layer 132a and the second film layer 132b is provided with a plurality of holes 133, and the surface of the first support portion 132 facing the flexible display panel 12 is a flat surface 134 flush with the second support portion 131. By correspondingly dividing the support layer 13 into the first support part 132 and the second support part 131 connected according to the distribution of the plane area D2 and the bending area D1 by disposing the integrated support layer 13, and providing the support force to the flexible display panel 12 through the first support part 132 and the second support part 131, while making the first support part 132 corresponding to the bending area D1 pass through the division of the first film 132a and the second film 132b, and disposing at least one of the two films in the form of a patterned film, while ensuring that the support layer 13 has sufficient support force to support the flexible display panel 12, it is avoided that the stress concentration of the part during folding affects the bending effect.
Meanwhile, no matter the plurality of holes 133 are disposed in the first film layer 132a or the second film layer 132b or the first film layer 132a and the second film layer 132b, it needs to be ensured that the surface of the first supporting portion 132 facing the flexible display template side is the flat surface 134 flush with the second supporting portion 131, that is, the opened hole 133133 does not penetrate through the flat surface 134, and the flat surface 134 is used for being attached to the non-display surface 122, so that in the repeated folding process of the flexible display module 1, the situation that the attached flexible display panel 12 generates a film print due to the fact that the disposed hole 133 penetrates through the flat surface 134 is avoided, and the display effect is affected.
Optionally, in order to ensure that the supporting layer 13 has a better supporting performance for the flexible display panel 12, the second supporting portion 131 still adopts a commonly-used metal structure such as stainless steel, and the first supporting portion 132 selects different structural coordination according to specific setting conditions of different film layer structures, so as to ensure that the supporting layer 13 has a better supporting strength, and at the same time, have a better bending performance, and can ensure a better display effect.
In some embodiments, referring to fig. 4 to 6, the first film layer 132a is located on a side of the second film layer 132b facing the flexible display panel 12, the flat surface 134 is a surface of the first film layer 132a facing away from the side of the second film layer 132b, when the second film layer 132b is provided with a plurality of holes 133, the plurality of holes 133 are arranged through the second film layer 132b in a thickness direction of the support layer 13, or may be non-through holes, and when the first film layer 132a is provided with a plurality of holes 133, the holes 133 are non-through holes in the thickness direction of the support layer 13. That is, the plurality of holes 133 includes a plurality of first holes 133a and a plurality of second holes 133b, the first holes 133a are through or non-through hole-shaped structures disposed on the second film layer 132b, and the second holes 133b are non-through hole-shaped structures disposed on the first film layer 132 a. For example, the second holes 133b and the first holes 133a disposed in the first film layer 132a and the second film layer 132b may be obtained by patterning the corresponding film layers, and the patterned first film layer 132a and the patterned second film layer 132b are referred to as patterned film layers.
In some embodiments, when the first film layer 132a and the second film layer 132b are both configured as a patterned film layer (i.e., the first film layer 132a and the second film layer 132b are both configured with a plurality of holes 133), the first holes 133a may be blind holes that do not penetrate at least one side surface of the second film layer 132b in the thickness direction as shown in fig. 4, or through holes that penetrate the second film layer 132b in the thickness direction of the support layer 13 as shown in fig. 5, which is not limited herein. The first holes 133a disposed in the second film layer 132b can improve the bending performance of the portion while reducing the supporting force to the minimum, and for whether the first holes 133a disposed in the second film layer 132b are through holes or blind holes, and the size of the corresponding holes and the depth of the blind holes, etc., the first holes 133a may be adaptively adjusted according to the specific bending performance of the supporting layer 13 required in actual use, which is not specifically limited herein.
Optionally, when the holes 133 are disposed on both the first film layer 132a and the second film layer 132b, the holes 133 disposed in the first film layer 132a and the second film layer 132b are respectively in one-to-one correspondence and are communicated with each other. That is, in order to better improve the bending performance of the bending region D1 through the first holes 133a and the second holes 133b, the first holes 133a and the second holes 133b are in one-to-one correspondence and are communicated in the thickness direction of the support layer 13, so that, in such a one-to-one correspondence manner, a larger inner space of a hollow structure is formed in the first support portion 132 after the first holes 133a and the second holes 133b are communicated, so that when the flexible display module 1 is bent, the larger hollow structure formed by the combination of the communicated first holes 133a and the second holes 133b can be deformed after being bent and pressed to serve as an energy absorbing component, so as to improve the bending performance of the bending region D1 and avoid stress concentration.
Referring to fig. 6 and 7, when one of the first film 132a and the second film 132b is a patterned film (the plurality of holes 133 are only disposed on the first film 132a or the second film 132b), that is, only the first film 132a is disposed with the second hole 133b that does not penetrate the flat surface 134, or only the second film 132b is disposed with the first hole 133a, where the first hole 133a may be a through hole or a blind hole, so as to dispose a corresponding hole on the corresponding film according to requirements, so as to improve the bending performance of the flexible display module 1 through the disposed hole while not affecting the supporting capability of the supporting layer 13, and not to generate a film print on the flexible display panel 12 corresponding to the bending region D1 when the bending region D1 is repeatedly folded, so as to affect the display effect.
Optionally, referring to fig. 8, a surface of the second film layer 132b facing away from the flexible display panel 12 has a recess 135, and the recess 135 is recessed toward the first film layer 132a along a thickness direction of the support layer 13. The second supporting portion 131 has a first surface 131a and a second surface 131b facing away from each other along the thickness direction of the supporting layer 13, the first surface 131a is flush with the flat surface 134 in the first film layer 132a, the second film layer 132b has a third surface 135a facing away from the side of the flexible display panel 12, the third surface 135a is located on the side of the second surface 131b close to the flexible display panel 12 in the thickness direction of the supporting layer 13, so that a concave portion 135 is formed between the second supporting portion 131 and the second film layer 132b, and the bottom surface of the concave portion 135 is the third surface 135 a. The thickness of the first supporting portion 132 is smaller than that of the second supporting portion 131, so that the bending performance of the portion is improved by thinning the first supporting portion 132 of the bending region D1 correspondingly, and the supporting force of the flexible display panel 12 is not reduced sharply due to the whole thinning of the supporting layer 13.
Since the thickness of the first support part 132 is reduced by the recess 135 provided in the second film layer 132b of the bending region D1 to improve the bending performance, the depth and shape of the recess 135 and whether the size of the recess 135 covers the entire bending region D1 or is formed in a local part may be adaptively adjusted according to actual conditions while satisfying the supporting force of the support layer 13 on the flexible display panel 12, which is not specifically limited herein.
It is understood that, for the first film layer 132a and the second film layer 132b, in order to ensure the supporting performance of the supporting layer 13 on the flexible display panel 12 as a whole, at least one of the first film layer 132a and the second film layer 132b is provided with a metal structure the same as or similar to the second supporting portion 131, and is integrally formed with the second supporting portion 131.
In an embodiment, the first film 132a is located on one side of the second film 132b facing the flexible display panel 12, the first film 132a is disposed as a non-metal layer, and the second film 132b is a metal layer formed by the same metal material as the second supporting portion 131, so that the thickness of the metal layer in the first supporting portion 132 is reduced, the bending stress of the bending region D1 is improved, meanwhile, the supporting layer 13 has less influence on the supporting strength of the flexible display panel 12, the bending force of the bending region D1 is reduced, and stress concentration is avoided. Meanwhile, the flat surface 134 of the non-metal layer is flush with the surface of the second supporting portion 131, so that the situation that the flexible display panel 12 is attached to the non-metal layer to easily generate a film print due to the thinning design of the thickness of the first supporting portion 132 is avoided.
Optionally, when the film layer of the first supporting portion 132 facing the flexible display panel 12 is a non-metal film layer, in order to ensure a better display effect of the flexible display panel 12, the corresponding film layer is an opaque non-metal layer, and in order to form the opaque non-metal layer, a polymer material, such as a black poly-p-phthalic acid material, may be selected.
In some embodiments, when the required non-metallic first film layer 132a is formed in the supporting layer 13, on the basis that the second supporting portion 131 and the second film layer 132b are integrally connected, a filling space is formed at a position corresponding to the position where the first film layer 132a is disposed, the filling space is filled with the terephthalic acid material by melting, and the first film layer 132a with the flat surface 134 is obtained after curing. Therefore, filling non-metal to form the first film layer 132a can improve the bending performance.
It is emphasized that the thickness of the metal layer in the first support portion 132 is smaller than that of the second support portion 131, and when only the second film layer 132b is provided as the metal film layer in the first support portion 132, the thickness of the second film layer 132b is not smaller than 50 μm. In order to avoid affecting the supporting properties of the supporting layer 13 as a whole for the flexible display panel 12.
In some embodiments, no matter what the structure of the first supporting portion 132 is, in order to prevent the contact surface between the adjacent films in the first supporting portion 132 from easily separating during the repeated folding process and causing the films to fall off, referring to fig. 9 and 10, the flexible display module 1 further includes a connecting portion 136, the connecting portion 136 is located on the first film 132a, and the connecting portion 136 at least partially extends into the plurality of holes 133 located on the second film 132b for connecting the first film 132a and the second film 132 b. The first film layer 132a and the second film layer 132b are connected to each other by extending the connecting portion 136 disposed on the first film layer 132a into the hole 133 of the second film layer 132b, so as to improve the strength of the connection therebetween.
Optionally, referring to fig. 9 and 10, for the connection portion 136, in order to ensure that it can have better connection stability, and further improve the connection strength of the first film layer 132a and the second film layer 132b, the connection portion 136 may be made of the same non-metal material as the first film layer 132a, when the first film layer 132a is formed by melting and refilling the non-metal material, the melted non-metal material may penetrate into the corresponding hole 133 of the second film layer 132b, and after curing, the non-metal first film layer 132a and the connection portion 136 are integrally formed, so that the connection area of the first film layer 132a and the second film layer 132b is increased, thereby improving the connection strength between the film layers and avoiding the situation that the film layers are easily separated in the repeated folding process.
In some embodiments, in addition to the above-mentioned first supporting portion 132 including the first film layer 132a and the second film layer 132b, referring to fig. 9, the first supporting portion 132 may further include a third film layer 132c, the third film layer 132c is located on a side of the second film layer 132b away from the flexible display panel, and a lower surface (a surface on a side away from the third surface 135 a) of the third film layer 132c is flush with a lower surface (the second surface 131b) of the second supporting portion 131. Exemplarily, third rete 132c is the non-metal layer to setting through third rete 132c can reduce the shared thickness of metal in first supporting part 132 as required, is used for remedying the space that metal thickness attenuate left in first supporting part 132, guarantees that the upper and lower surface of supporting layer 13 all has better roughness.
As an embodiment, referring to fig. 11, the second supporting portion 131 is provided with a plurality of protrusions 132d toward the side wall of the first supporting portion 132, at least one of the first film layer 132a and the second film layer 132b is provided with recesses 131c engaged with the protrusions 132d, and the protrusions 132d at least partially extend into the recesses 131c for connecting the first supporting portion 132 and the second supporting portion 131. In the process of repeatedly bending the flexible display film assembly, the supporting layer 13 may be bent accordingly, especially corresponding to the position of the bending region D1, and the bending angle is larger, and in the structure in which the supporting layer 13 is configured as the first supporting portion 132 and the second supporting portion 131 which are connected, the connection position between the two is easy to fall off when being folded, thereby affecting the supporting strength of the supporting layer 13 on the flexible display panel 12. Therefore, in order to prevent the first supporting portion 132 and the second supporting portion 131 from easily falling off, the connecting position between the two is set to the protrusion 132d and the recess 131c which are matched, so that the contact area when the first supporting portion 132 and the second supporting portion 131 are connected is increased, the bonding strength between the two is improved, and the falling off is avoided.
Optionally, the metal layer in the first supporting portion 132 and the second supporting portion 131 are made of the same material and are integrally formed, so that the supporting layer 13 is ensured to have a better supporting force while the position where the two are directly connected is prevented from easily falling off. The non-metal layer in the first supporting portion 132 and the second supporting portion 131 are connected through the protrusion 132d and the recess 131c, which are matched, so as to ensure the strength of the connection and avoid the cracking of the connection position when the folding process is performed. Since the second supporting portion 131 is located at both sides of the first supporting portion 132 in the first direction L, the first supporting portion 132 is provided with the protrusions 132d and the recesses 131c at both sides of the first direction L, and when the protrusions 132d are provided on the first supporting portion 132, the protrusions 132d located in the first supporting portion 132 at each side are uniformly distributed, so that the stress of each portion is uniform, and the structural stability of the connection is improved.
In one embodiment, the protrusion is a circular protrusion structure protruding outward from the first support part 132, and contact positions of the plurality of protrusions 132d and the recesses 131c, which are fitted, form a wavy line shape in the thickness direction of the support part 13. Or may be in other shapes that can increase the contact area between the first supporting portion 132 and the second supporting portion 131, and is not particularly limited herein.
The application also provides a display device, and display device includes flexible display module assembly 1, and flexible display module assembly 1 is according to the flexible display module assembly 1 that the aforesaid described.
The application also provides a manufacturing method of the flexible display module, referring to fig. 3 to 6, the manufacturing method includes: providing a flexible display panel 12; forming second supporting parts 132 on the back side of the flexible display panel 12 corresponding to the display area, wherein two adjacent second supporting parts 132 are distributed at intervals through a spacing part; the first supporting portion 132 is formed at the spacing portion, the first supporting portion 132 includes a first film layer 132a and a second film layer 132b which are stacked, at least one of the first film layer 132a and the second film layer 132b is opened with a plurality of holes 133, and a surface of the first supporting portion 132 facing the flexible display panel 12 is a flat surface 134 which is flush with the second supporting portion 132. That is, on the basis of the flexible display panel 12, the second supporting portions 132 may be disposed at intervals at positions corresponding to the display regions on the back side of the flexible display panel 12, so that a gap portion having a recess is formed between the two spaced second supporting portions 132 and the flexible display panel 12, the gap portion corresponds to the position of the bending region D1, and then the first supporting portion 132 is formed in the gap portion. When the first supporting portion 132 is formed, the first film layer 132a and the second film layer 132b may be disposed in the spacing portion layer by layer through a patterning process, and it is ensured that the surface of the film layer located on one side facing the flexible display panel 12 is the flat surface 134, so as to ensure that the flat surface 134 of the film layer corresponding to the bending region D1 can be better attached to the flexible display panel 12 and no film mark is generated when the flexible display panel 12 is bent.
Illustratively, the holes 133 disposed in at least one of the first film layer 132a and the second film layer 132b are patterned together to form the corresponding holes 133 at the same time of patterning the film layers.
In some embodiments, the supporting layer 13 having the first supporting portion 132 and the second supporting portion 131 may be formed separately, and then the formed supporting layer 13 is correspondingly attached to the back side of the flexible display panel 12, where the first supporting portion 132 is opposite to the bending region D1.
For example, when the supporting layer 13 is formed separately, the second supporting portion 131 and the second film layer 132b, which are both made of metal materials, may be integrally formed, a recess is formed between the second supporting portion 131 and the second film layer 132b in the thickness direction and on a side facing the flexible display panel 12, and then the molten non-metal material is filled in the recess to form the first film layer 132a until the flat surface 134 of the first film layer 132a on a side far from the second film layer 132b is flush with the surface of the second supporting portion 131. It should be understood that, when the first supporting portion 132 is formed in this way, if a plurality of holes 133 need to be formed in the first supporting portion 132, the through holes may be formed in the second film layer 132b in advance, and when the non-metal material is filled, a convex hull-shaped mold processed through the through holes and the holes 133 of the first film layer 132a may be filled in advance to ensure that the film layer structure of the desired holes 133 can be obtained.
Alternatively, when the supporting layer 13 is formed separately, a flat plate-shaped structure corresponding to the size of the flexible display panel 12 may be directly obtained, a structure recessed in the thickness direction is processed at a position corresponding to the bending area D1 of the flexible display panel 12 corresponding to the flat plate-shaped structure, the second supporting portion 131 is disposed at two sides corresponding to the recess, the portion in the recess is the second film layer 132b, and whether the hole 133 is disposed on the second film layer 132b may be selected as required. Then, the first film layer 132a is disposed at the recessed position, and the forming of the first film layer 132a at the recessed position may be the same as the forming method described above, and will not be described herein again.
It should be emphasized that, for the supporting layer 13 formed on the back side of the flexible display module 1, a plurality of different forming methods may be selected during the forming process, and according to the requirement of providing different types of holes 133 on different film layers of the first supporting portion 132, a suitable method may be adaptively selected according to the forming method, which is not specifically limited herein.
As will be apparent to those skilled in the art, for convenience and brevity of description, the specific working processes of the systems, modules and units described above may refer to corresponding processes in the foregoing method embodiments, and are not described herein again. It should be understood that the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the present application, and these modifications or substitutions should be covered within the scope of the present application.
It should also be noted that the exemplary embodiments mentioned in this application describe some methods or systems based on a series of steps or devices. However, the present application is not limited to the order of the above-described steps, that is, the steps may be performed in the order mentioned in the embodiments, may be performed in an order different from the order in the embodiments, or may be performed simultaneously.
Claims (10)
1. The utility model provides a flexible display module assembly, has plane district and bending zone, its characterized in that, flexible display module assembly includes:
a flexible display panel comprising a display surface and a non-display surface that are opposite to each other;
the supporting layer is arranged on one side of the non-display surface of the flexible display panel and comprises a first supporting portion and a second supporting portion which are connected, the first supporting portion is distributed corresponding to the bending area, the first supporting portion comprises a first film layer and a second film layer which are stacked in the thickness direction of the supporting layer, at least one of the first film layer and the second film layer is provided with a plurality of holes, and the surface of one side, facing the flexible display panel, of the first supporting portion is a flat surface which is flush with the second supporting portion.
2. The flexible display module of claim 1, wherein the first film layer is located on a side of the second film layer facing the flexible display panel, and the flat surface is a surface of the first film layer facing away from the side of the second film layer.
3. The flexible display module of claim 2, wherein the plurality of holes are disposed through the second film layer in a thickness direction of the support layer; and/or the presence of a gas in the gas,
the plurality of holes are non-through holes arranged in the thickness direction of the supporting layer and communicated with the holes communicated with the second film layer in a one-to-one correspondence manner.
4. The flexible display module according to claim 2, wherein a surface of the second film layer facing away from the flexible display panel has a recess, and the recess is recessed toward the first film layer along a thickness direction of the support layer.
5. The flexible display module of claim 2, wherein the first film layer is an opaque non-metallic layer and the second film layer is a metallic layer;
the thickness of the metal layer is smaller than that of the second support layer and not smaller than 50 micrometers.
6. The flexible display module of claim 2, further comprising a connecting portion disposed on the first membrane layer and at least partially extending into the plurality of holes disposed on the second membrane layer for connecting the first membrane layer to the second membrane layer.
7. The flexible display module of any one of claims 2-6, wherein the first support further comprises a third film layer on a side of the second film layer away from the flexible display panel, and a lower surface of the third film layer is flush with a lower surface of the second support.
8. The flexible display module of any one of claims 1-6, wherein the second support is provided with a plurality of protrusions on a sidewall thereof facing the first support, at least one of the first and second layers being provided with a recess for mating with the first protrusion, the first protrusion extending at least partially into the recess for connecting the first and second supports.
9. A display device, comprising a flexible display module according to any one of claims 1 to 8.
10. A preparation method of a flexible display module is characterized by comprising the following steps: the preparation method comprises the following steps:
providing a flexible display panel;
forming second supporting parts corresponding to the display area on the back side of the flexible display panel, wherein two adjacent second supporting parts are distributed at intervals through a spacing part;
the spacer portion forms a first supporting portion, the first supporting portion comprises a first film layer and a second film layer which are stacked, at least one of the first film layer and the second film layer is provided with a plurality of holes, and the surface of the first supporting portion, facing the flexible display panel, on one side is a flat surface flush with the second supporting portion.
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| CN114333589A (en) * | 2021-12-30 | 2022-04-12 | 湖北长江新型显示产业创新中心有限公司 | Supporting assembly, flexible display device and electronic equipment |
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