CN112164311A

CN112164311A - Flexible substrate, flexible display panel and display device

Info

Publication number: CN112164311A
Application number: CN202011031278.7A
Authority: CN
Inventors: 郑秉文
Original assignee: Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
Current assignee: Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
Priority date: 2020-09-27
Filing date: 2020-09-27
Publication date: 2021-01-01

Abstract

The application provides a flexible substrate, a flexible display panel and a display device. The flexible substrate includes: the bearing device comprises a first bearing part, a second bearing part and a third bearing part, wherein the third bearing part is connected with the first bearing part and the second bearing part, and the first bearing part and the second bearing part are foldable relative to the third bearing part; the third bearing part is provided with a plurality of exhaust holes which are arranged at intervals, and each exhaust hole is communicated with the edge of the third bearing part, so that the poor appearance phenomena such as bubbles or dents generated by the flexible substrate can be avoided in the manufacturing process of the display panel.

Description

Flexible substrate, flexible display panel and display device

Technical Field

The application relates to the technical field of display, in particular to a flexible substrate, a flexible display panel and a display device.

Background

At present, electronic equipment such as a mobile phone is an indispensable thing in life as a mobile communication tool. The display technology is applied to the field of electronic equipment, and the development is particularly rapid recently, and for example, curved screens, full-area screens and folding screens are diversified. Wherein the foldable screen will be more and more widely applied in the future.

In the related art, in order to maintain the stiffness and the bending performance of the folding screen, the flexible substrate in the folding screen needs to have a certain thickness and good bending performance. The flexible substrate is divided into two parts during design, wherein one part is a planar flexible substrate with a certain thickness, and the other part is a flexible substrate with holes opened according to certain grains. In the manufacturing process of the display panel, a protective layer on one surface of the flexible substrate and an adhesive layer on the other surface of the flexible substrate form a closed space, and due to the opening design of the flexible substrate, when high-temperature high-pressure defoaming or vacuum bonding is carried out, the pressure difference between the opening position of the flexible substrate and the outside is formed, and accordingly poor appearance phenomena such as bubbles or dents are generated.

Disclosure of Invention

The embodiment of the application provides a flexible substrate, a flexible display panel and a display device, so that in the manufacturing process of the display panel, the phenomenon of poor appearance such as bubbles or dents generated by the flexible substrate is avoided.

An embodiment of the present application provides a flexible substrate, including: the bearing device comprises a first bearing part, a second bearing part and a third bearing part, wherein the third bearing part is connected with the first bearing part and the second bearing part, and the first bearing part and the second bearing part are foldable relative to the third bearing part;

the third bearing part is provided with a plurality of exhaust holes which are arranged at intervals, and each exhaust hole is communicated with the edge of the third bearing part.

In the flexible substrate of the embodiment of the application, the exhaust holes are arranged in a plurality of groups of exhaust hole groups along a first direction on the third bearing part, each group of exhaust hole groups comprises a plurality of exhaust holes, and each exhaust hole in each exhaust hole group is communicated to the edge of the third bearing part through a communicating structure.

In the flexible substrate of the embodiment of the present application, the communicating structure includes a first sub communicating structure and a second sub communicating structure, the first sub communicating structure communicates with each group of adjacent exhaust holes in the exhaust hole group, the second sub communicating structure communicates with the edge of the third carrying part and each group of adjacent exhaust holes in the exhaust hole group, the second sub communicating structure communicates with the exhaust holes close to the edge of the third carrying part in the exhaust hole group.

In the flexible substrate of this application embodiment, the multiunit every exhaust hole in the exhaust hole group arranges in proper order in the second direction, the second direction with first direction mutually perpendicular, the size of every exhaust hole in every exhaust hole group is the same.

In the embodiment of the application, in the flexible substrate, every group be located the edge exhaust hole of at least one side in the exhaust hole group by the edge of third bearing part to the inside sunken formation of third bearing part, the connectivity structure includes the sub connectivity structure of third and the sub connectivity structure of fourth, the sub connectivity structure of third communicates every group the edge exhaust hole in the exhaust hole group and be close to the exhaust hole of edge exhaust hole, the sub connectivity structure of fourth communicates in every group exhaust hole group except that other exhaust holes outside the edge exhaust hole.

In the embodiment of the application, each group in the flexible substrate be provided with two rows of dislocation arrangement's sub exhaust hole group in the exhaust hole group, and wherein one row the edge exhaust hole that lies in at least one side in the sub exhaust hole group by the edge of third bearing part to the inside sunken formation of third bearing part, the extending structure includes the sub-extending structure of fifth, the sub-extending structure of sixth and seventh, the sub-extending structure of fifth intercommunication edge exhaust hole in the sub exhaust hole group and be close to the exhaust hole of edge exhaust hole, the sub-extending structure of sixth intercommunication every group in the sub exhaust hole group except adjacent exhaust hole outside the edge exhaust hole, the sub-extending structure of seventh intercommunication the edge and every group of third bearing part be close to in the sub exhaust hole group the exhaust hole of the edge of third bearing part.

In the flexible substrate of the embodiment of the application, the exhaust holes are arranged on the third bearing part in a plurality of groups of exhaust hole groups along the first direction, and the adjacent two groups of exhaust hole groups are communicated through the communicating structure and communicated to the edge of the third bearing part through the communicating structure.

In the flexible substrate according to an embodiment of the present application, the communicating structure includes an eighth sub-communicating structure and a ninth sub-communicating structure, the eighth sub-communicating structure communicates with two adjacent sets of the exhaust hole groups, two adjacent sets of the exhaust hole groups are adjacent to each other the eighth sub-communicating structure passes through the ninth sub-communicating structure and communicates with the edge of the third carrying portion through the ninth sub-communicating structure.

In the flexible substrate according to the embodiment of the present application, the communicating structure includes a tenth communicating structure and an eleventh communicating structure, the tenth communicating structure communicates with two adjacent sets of the exhaust hole groups, the eleventh communicating structure communicates with adjacent exhaust holes in any one of the exhaust hole groups, and communicates with the edge of the third carrying part and any one of the exhaust hole groups, which is close to the exhaust hole at the edge of the third carrying part.

In the flexible substrate according to the embodiment of the present application, a cross-sectional shape of the communicating structure is any one of an arc shape and a square shape.

The embodiment of the application provides a flexible display panel, includes: a flexible substrate; the flexible substrate is the flexible substrate described in the embodiments of the present application.

An embodiment of the present application provides a display device, including: the flexible display panel is the flexible display panel in the embodiment of the application.

The flexible substrate of the present application includes: the bearing device comprises a first bearing part, a second bearing part and a third bearing part, wherein the third bearing part is connected with the first bearing part and the second bearing part, and the first bearing part and the second bearing part are foldable relative to the third bearing part; the third bearing part is provided with a plurality of exhaust holes which are arranged at intervals, each exhaust hole is communicated with the edge of the third bearing part, and each exhaust hole of the third bearing part is communicated with the edge of the third bearing part, so that all the exhaust holes of the third bearing part are ensured to be communicated with the outside, and therefore, when high-temperature high-pressure defoaming or vacuum fitting is carried out, air pressure difference cannot be formed, and the phenomenon of poor appearance is avoided.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required in the embodiments are briefly described below. The drawings in the following description are only some embodiments of the present application, and it will be obvious to those skilled in the art that other drawings can be obtained from the drawings without inventive effort.

Fig. 1 is a schematic structural diagram of a display device according to an embodiment of the present disclosure;

fig. 2 is a schematic structural diagram of a flexible display panel provided in an embodiment of the present application;

fig. 3 is a schematic structural diagram of a flexible substrate in a folded state according to an embodiment of the present application;

fig. 4 is a schematic structural diagram of a flexible substrate in a flattened state according to an embodiment of the present disclosure;

fig. 5 is a schematic view of a first structure of a third carrying portion in a flexible substrate according to an embodiment of the present disclosure;

fig. 6 is a schematic second structural diagram of a third carrying portion in a flexible substrate according to an embodiment of the present disclosure;

fig. 7 is a schematic structural diagram of a third bearing portion in a flexible substrate according to an embodiment of the present disclosure;

fig. 8 is a schematic diagram illustrating a fourth structure of a third carrying portion in a flexible substrate according to an embodiment of the present disclosure;

fig. 9 is a schematic structural diagram of a fifth structure of a third bearing portion in a flexible substrate according to an embodiment of the present disclosure;

fig. 10 is a schematic view of a sixth structure of a third bearing portion in a flexible substrate according to an embodiment of the present disclosure;

fig. 11 is a schematic structural diagram of a seventh structure of a third carrying portion in a flexible substrate according to an embodiment of the present disclosure;

fig. 12 is an eighth structural schematic diagram of a third carrying portion in a flexible substrate according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. 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, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a display device 1000 according to an embodiment of the present disclosure. The display device 1000 may include a flexible display panel 100, a control circuit 200, and a housing 300. It should be noted that the display apparatus 1000 shown in fig. 1 is not limited to the above, and may further include other devices, such as a camera, an antenna structure, a thread unlocking module, and the like.

Wherein the flexible display panel 100 is disposed on the housing 200.

In some embodiments, the flexible display panel 100 may be fixed to the housing 200, and the flexible display panel 100 and the housing 300 form a closed space to accommodate the control circuit 200 and the like.

In some embodiments, the housing 300 may be made of a flexible material, such as a plastic housing or a silicone housing.

The control circuit 200 is installed in the housing 300, the control circuit 200 may be a main board of the display device 1000, and one, two or more functional components of a battery, an antenna structure, a microphone, a speaker, an earphone interface, a universal serial bus interface, a camera, a distance sensor, an ambient light sensor, a receiver, a processor, and the like may be integrated on the control circuit 200.

The flexible display panel 100 is mounted in the housing 300, and the flexible display panel 100 is electrically connected to the control circuit 200 to form a display surface of the display device 1000. The flexible display panel 100 may include a display area and a non-display area. The display area may be used to display a screen of the display device 1000 or provide a user with touch control. The non-display area may be used to set various functional components.

Referring to fig. 2, fig. 2 is a schematic structural diagram of a flexible display panel 100 according to an embodiment of the present disclosure, where the flexible display panel 100 includes: the protective layer 10, the flexible substrate 20, the adhesive layer 30, the light emitting unit 40, the polarizer 50 and the cover plate 60 are sequentially stacked from bottom to top.

The Light Emitting unit 40 may be any one of an organic Light-Emitting Diode (OLED), a Light-Emitting Diode (LED), or a Liquid Crystal Display (LCD). Correspondingly, the needed polarizers 50 are different for different types of light-emitting units, when the light-emitting unit 40 is an LCD, since the LCD does not emit light, a backlight source is needed, the polarizers are necessary components for imaging of the display module, two polarizers are needed in the LCD module and are respectively located on two sides of the glass substrate, the lower polarizer is responsible for converting a light beam of the backlight source into polarized light, the upper polarizer is responsible for analyzing the polarized light after the liquid crystal is electrically modulated, and the polarizer 50 is the upper polarizer; when the light emitting unit 40 is an OLED, since the OLED is a self-light emitting device configured such that RGB three-color organic film layers capable of self-light emission when power is turned on are vapor-deposited on the TFT substrate, a circular polarizer is required for reducing interference of natural light with a screen.

Specifically, the flexible substrate 20 is provided with a groove, a blind hole, or a through hole formed by inward recessing the side surface of the third bearing portion, the above structure is a communication structure, and the cross-sectional shape of the communication structure is any one of an arc shape and a square shape.

Referring to fig. 3 and 4 together, fig. 3 is a schematic structural diagram of the flexible substrate 20 in a folded state according to an embodiment of the present disclosure, and fig. 4 is a schematic structural diagram of the flexible substrate 20 in a flattened state according to an embodiment of the present disclosure.

The flexible substrate 20 includes: a first bearing part 201, a second bearing part 202 and a third bearing part 203. The first carrier part 201 and the second carrier part 202 are foldable with respect to the third carrier part 203.

The third supporting portion 203 is provided with a plurality of exhaust holes 2031 arranged at intervals, and each exhaust hole 2031 is communicated with an edge (not shown in fig. 3) of the third supporting portion 203.

It is understood that, in order to ensure the bending property of the flexible display panel 100, the flexible substrate 20 may be made of a metal having ductility, such as stainless steel (SUS) or Aluminum (AL), so as to ensure the strength of the flexible substrate 20 and also to ensure the flexibility of the substrate. For better bending, the flexible substrate may be divided into three parts, namely, a first bearing part 201, a second bearing part 202 and a third bearing part 203. A plurality of exhaust holes 2031 may be formed in the third carrier part 203 by patterning the third carrier part 203, where the exhaust holes 2031 may be blind holes or through holes. The difference between this application and prior art lies in that the edge intercommunication of the exhaust hole 2031 that the patterning process formed in this application and third portion 203 that bears to avoid being located the protective layer of flexible substrate one side and the glue film of another side and the closely laminating of flexible substrate to lead to the bad phenomenon of appearance such as bubble or indent that the gas that persists in the exhaust hole 2031 caused at high temperature high pressure deaeration or vacuum laminating.

In some embodiments, as shown in fig. 5, fig. 5 is a schematic view of a first structure of a third carrier portion 203 in a flexible substrate 20 according to an embodiment of the present disclosure. The plurality of exhaust holes 2031 may be arranged in a plurality of sets of exhaust holes 20311 on the third carrier part 203 in the first direction. Each set of exhaust ports 20311 includes a plurality of exhaust ports 2031. Each of the exhaust holes 2031 in each set of the exhaust hole groups 20311 is communicated to an edge of the third bearing part 203 through a communication structure 2032.

Based on different patterning processes, a plurality of sets of exhaust holes 20311 may be formed in the carrier 203 in a first direction, and in fig. 5, for example, the exhaust holes 2031 in the same row are identified as a set of exhaust holes 20311, and the exhaust holes 20311 may be arranged in a positive Y-axis direction or a negative Y-axis direction, so as to form a plurality of sets of exhaust holes 20311 including a plurality of exhaust holes 2031. To ensure the gas circulation in each of the gas discharge holes 2031, each of the gas discharge holes 2031 in each set of gas discharge holes 20311 may be communicated to the edge of the third bearing part 203 through a communication structure 2032. The exhaust holes 2031 on both sides in each set of exhaust hole groups 20311 may be respectively communicated to different edges of the third carrying portion 203 through the communicating structure 2031, or may be respectively communicated to the same edge of the third carrying portion 203 through the communicating structure 2031, which is not limited herein.

Referring to fig. 6, fig. 6 is a schematic view of a second structure of a third carrying portion 203 in a flexible substrate 20 according to an embodiment of the present disclosure. The communication structure may include a first sub-communication structure 203201 and a second sub-communication structure 203202. The first sub-communication structure 203201 communicates adjacent exhaust holes 2031 in each set of exhaust holes 20311. The second sub communication structure 203202 communicates with the edge of the third bearing part 203 and the exhaust holes 2031 near the edge of the third bearing part 203 in each set of exhaust hole groups.

Here, the adjacent gas discharge holes 2031 in the gas discharge hole group 20311 may be communicated by the first sub communication structure 203201, and the gas discharge holes 2031 near the edge of the third carrier part 203 are communicated to the edge of the third carrier part 203 by the second sub communication structure 203202. Fig. 6 is different from fig. 5 in that the length of the communication structure 2032 communicating with the edge of the third carrying portion 203 is reduced, so as to reduce the manufacturing cost and simplify the process.

Wherein each exhaust hole 2031 in the plurality of exhaust hole groups 20311 is arranged in sequence in the second direction. The second direction is perpendicular to the first direction. The size of each exhaust hole in each group of exhaust hole groups is the same. The first sub communication structures 203201 are the same size. The second sub communication structures 203202 are the same size.

It will be appreciated that a column of exhaust ports 2031 may be identified as a set of exhaust port groups 20311 and arranged in a second direction perpendicular to the first direction (i.e., in either the positive half of the X or the negative half of the X), thereby forming a plurality of sets of exhaust ports 20311 comprising a plurality of exhaust ports 2031. And each of the exhaust holes 2031 in each set of exhaust hole groups 20311 may be provided with the same size.

As shown in fig. 7, fig. 7 is a schematic structural diagram of a third bearing portion 203 in the flexible substrate 20 according to the embodiment of the present disclosure. The edge vent hole 2033 on at least one side in each set of vent hole groups 20311 is formed by the edge of the third bearing part 203 being recessed inward of the third bearing part 203. The communicating structure 2032 includes a third sub-communicating structure 203203 and a fourth sub-communicating structure 203204. The third sub-communication structure 203203 communicates the edge vent holes 2033 in each set of vent holes 20311 and the vent holes 2031 near the edge vent holes 2033. The fourth sub-communication structure 203204 communicates the other exhaust holes 2031 in each set of exhaust holes 20311 except for the edge exhaust hole 2033.

Here, each set of the exhaust hole groups 20311 may include an edge exhaust hole 2033 formed by an edge of the third carrier part 203 being recessed toward the inside of the third carrier part 203 and other exhaust holes 2031, and the edge exhaust hole 2033 in each set of the exhaust hole groups 20311 and the exhaust hole 2031 near the edge exhaust hole 2033 are communicated through the third sub-communication structure 203203, and the fourth sub-communication structure 203204 communicates with other exhaust holes 2031 in each set of the exhaust hole groups 20311 except the edge exhaust hole 2033. Fig. 7 is different from fig. 5 and 6 in that the second sub-communication structure 203202 is replaced by directly providing the edge vent hole 2033, so that when the gas in the inner vent hole 2031 is communicated to the edge vent hole 2033, the gas can be rapidly discharged at the edge vent hole 2033 due to the fact that the size of the edge vent hole 2033 is larger than that of the second sub-communication structure 203202, thereby further reducing the possibility of bubbles or depressions.

In some embodiments, as shown in fig. 8, fig. 8 is a fourth structural schematic diagram of the third carrier portion 203 in the flexible substrate 20 according to the embodiment of the present disclosure. Each exhaust hole group 20311 is provided with two rows of sub exhaust hole groups arranged in a staggered manner, and the edge exhaust hole 2033 on at least one side in one row of the sub exhaust hole groups is formed by the edge of the third bearing part 203 being recessed toward the inside of the third bearing part 203. The communicating structure 2032 comprises a fifth sub-communicating structure 203205, a sixth sub-communicating structure 203206 and a seventh sub-communicating structure 203207. The fifth sub communication structure 203205 communicates the edge vent hole 2033 in the sub vent hole group and the vent hole 2031 near the edge vent hole 2033. The sixth sub communication structure 203206 communicates the adjacent exhaust holes 2031 in each sub exhaust hole group except for the edge exhaust hole 2033. The seventh sub communication structure 203207 communicates with the edge of the third bearing part 203 and the exhaust holes 2031 near the edge of the third bearing part 203 in each of the sub exhaust hole groups.

The exhaust hole group 20311 may include two rows of sub-exhaust hole groups arranged in a staggered manner, wherein an edge exhaust hole 2033 is present in one row of the sub-exhaust hole groups, and the fifth sub-communication structure 203205, the sixth sub-communication structure 203206 and the seventh sub-communication structure 203207 may be respectively disposed for different sub-exhaust hole groups to communicate with different exhaust holes 2031 and edge exhaust holes 2033.

Further, referring to fig. 9 and fig. 10, fig. 9 is a fifth structural schematic diagram of the third carrying portion 203 in the flexible substrate 20 according to the embodiment of the present disclosure, and fig. 10 is a sixth structural schematic diagram of the third carrying portion 203 in the flexible substrate 20 according to the embodiment of the present disclosure. The plurality of exhaust holes 2031 are arranged in a plurality of sets of exhaust holes 20311 on the third carrier part 203 in the first direction. The two adjacent sets of exhaust hole groups 20311 are communicated by a communicating structure 2032 and by a communicating structure 2033 to an edge of the third bearing portion 203.

Each exhaust hole 2031 of two adjacent sets of exhaust hole groups 20311 can be communicated to the other set of exhaust hole groups 20311 by the communicating structure 2032, and communicated to the edge of the third bearing portion 203 by the communicating structure 2033.

Two types are possible based on the different ways of communicating the communicating structure 2032 to the edge of the third carrying part 203, the first type is to communicate two adjacent groups of exhaust hole groups 20311 through one communicating sub-structure and communicate the communicating sub-structure between two adjacent groups of exhaust hole groups 20311 to the edge of the third carrying part 203 through the other communicating sub-structure; the second is to communicate the two adjacent groups of exhaust hole groups 20311 through one sub-communication structure, communicate the adjacent exhaust holes 2031 in any one group of exhaust hole groups 20311 through the other sub-communication structure, and communicate the exhaust holes 2031 in any one group of exhaust hole groups 20311 near the edge of the third bearing part 203 to the edge of the third bearing part 203.

Therefore, with respect to the above-described first type, as shown in fig. 9, the communication structure 2032 may be provided to include an eighth sub-communication structure 203208 and a ninth sub-communication structure 203209. The eighth sub communication structure 203208 communicates the adjacent two sets of exhaust hole groups 20311. The adjacent eighth sub communication structures 203208 between the adjacent two sets of exhaust hole groups 20311 are communicated through the ninth sub communication structure 203209 and through the ninth sub communication structure 203209 to the edge of the third carrying portion 203.

With respect to the above-described second type, as shown in fig. 10, a communicating structure 2032 may be provided including a tenth sub-communicating structure 203210 and an eleventh sub-communicating structure 203211. The tenth sub communication structure 203210 communicates the adjacent two groups of exhaust holes 20311. The eleventh sub-communication structure 20311 communicates between the adjacent exhaust holes 2031 in any one of the exhaust hole groups 20311 and communicates between the edge of the third bearing part 203 and the exhaust hole 2031 in any one of the exhaust hole groups 20311 near the edge of the third bearing part 203.

Referring to fig. 11 and 12 together, fig. 11 is a seventh structural schematic diagram of the third carrying portion 203 in the flexible substrate 20 according to the embodiment of the present disclosure, and fig. 12 is an eighth structural schematic diagram of the third carrying portion 203 in the flexible substrate 20 according to the embodiment of the present disclosure. Each exhaust hole group 20311 is provided with two rows of sub-exhaust hole groups arranged in a staggered manner, and the edge exhaust hole 2033 on at least one side in one row of the sub-exhaust hole groups is formed by the edge of the third bearing part sinking into the third bearing part. The communicating structure 2032 communicates two adjacent sub-sets of exhaust holes (including the exhaust hole 2031 and the edge exhaust hole 2033).

In the embodiment of the present application, the exhaust hole 2031 and the communication structure include: the first sub communication structure 203201, the second sub communication structure 203202, the third sub communication structure 203203, the fourth sub communication structure 203204, the fifth sub communication structure 203205, the sixth sub communication structure 203206, the seventh sub communication structure 203207, the eighth sub communication structure 203208, the ninth sub communication structure 203209, the tenth sub communication structure 203210, and the eleventh sub communication structure 203211 may be through holes, single-sided blind holes, or double-sided blind holes. Wherein the vent holes and the communication structure may be the same type of hole structure. For example, the vent and communication structure may both be through holes. The vent and communication structure may also be a different type of hole structure. For example, the vent hole is a through hole, and the communicating structure is a blind hole.

A communicating structure 2032 comprising: the cross-sectional shapes of the first sub communication structure 203201, the second sub communication structure 203202, the third sub communication structure 203203, the fourth sub communication structure 203204, the fifth sub communication structure 203205, the sixth sub communication structure 203206, the seventh sub communication structure 203207, the eighth sub communication structure 203208, the ninth sub communication structure 203209, the tenth sub communication structure 203210, and the eleventh sub communication structure 203211 are any one of an arc shape and a square shape.

In some embodiments, the cross-sectional shape of the communication structure 2032 can have a first wall, a second wall, and a third wall, wherein the third wall connects the first and second walls, the first and second walls can be strip-shaped, and the third wall can be arc-shaped.

As shown in fig. 5, the width W2 and the length L2 of the discharge hole 2031 may be in communication with a structure including: the widths W1 and the lengths L1 of the first sub communication structure 203201, the second sub communication structure 203202, the third sub communication structure 203203, the fourth sub communication structure 203204, the fifth sub communication structure 203205, the sixth sub communication structure 203206, the seventh sub communication structure 203207, the eighth sub communication structure 203208, the ninth sub communication structure 203209, the tenth sub communication structure 203210 and the eleventh sub communication structure 203211 are all different or identical. The width W1 or the length L1 of each sub-communicating structure may be the same or different, and is not limited herein. Wherein, the width of the exhaust hole is the length on the Y axis, and the length of the exhaust hole is the length on the X axis. The width of the communicating structure is the length on the Y-axis, and the length of the communicating structure is the length on the X-axis.

The flexible substrate of the present application includes: the first bearing part, the second bearing part and the third bearing part are connected, and the first bearing part and the second bearing part are foldable relative to the third bearing part; the third bearing part is provided with a plurality of exhaust holes which are arranged at intervals, each exhaust hole is communicated with the edge of the third bearing part, and all the exhaust holes of the third bearing part are ensured to be communicated with the outside by enabling each exhaust hole of the third bearing part to be communicated with the edge of the third bearing part, so that air pressure difference can not be formed when high-temperature high-pressure defoaming or vacuum fitting is carried out, and the phenomenon of poor appearance is avoided.

The flexible substrate, the flexible display panel and the display device provided in the embodiments of the present application are described in detail above, and specific examples are applied herein to explain the principles and implementations of the present application, and the description of the embodiments above is only used to help understand the technical solutions and core ideas of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.

Claims

1. A flexible substrate, comprising: the bearing device comprises a first bearing part, a second bearing part and a third bearing part, wherein the third bearing part is connected with the first bearing part and the second bearing part, and the first bearing part and the second bearing part are foldable relative to the third bearing part;

2. The flexible substrate as claimed in claim 1, wherein the plurality of exhaust holes are arranged in a plurality of sets of exhaust holes on the third carrier along the first direction, each set of exhaust holes includes a plurality of exhaust holes, and each exhaust hole in each set of exhaust holes is communicated to an edge of the third carrier through a communication structure.

3. The flexible substrate of claim 2, wherein the communication structure comprises a first sub-communication structure and a second sub-communication structure, the first sub-communication structure communicates with adjacent exhaust holes in each group of the exhaust hole groups, and the second sub-communication structure communicates with the edge of the third carrier and the exhaust holes in each group of the exhaust hole groups near the edge of the third carrier.

4. The flexible substrate of claim 3, wherein each of the plurality of sets of exhaust holes is arranged in a second direction, the second direction is perpendicular to the first direction, and each of the plurality of sets of exhaust holes has the same size.

5. The flexible substrate according to claim 2, wherein the edge vent hole on at least one side of each set of vent holes is formed by the edge of the third carrier portion being recessed into the third carrier portion, the communication structure includes a third sub-communication structure and a fourth sub-communication structure, the third sub-communication structure communicates with the edge vent hole in each set of vent holes and the vent hole close to the edge vent hole, and the fourth sub-communication structure communicates with the vent holes in each set of vent holes except the edge vent hole.

6. The flexible substrate as claimed in claim 2, wherein each set of the air vent sets has two rows of sub air vent sets arranged in a staggered manner, and the edge exhaust hole on at least one side in the row of the sub exhaust hole groups is formed by the edge of the third bearing part sinking towards the inside of the third bearing part, the communicating structure comprises a fifth sub-communicating structure, a sixth sub-communicating structure and a seventh sub-communicating structure, the fifth sub-communicating structure communicates with the edge vent hole in the sub-vent hole group and the vent hole close to the edge vent hole, the sixth sub-communicating structure communicates with the adjacent exhaust holes in each sub-exhaust hole group except the edge exhaust hole, the seventh sub communication structure is communicated with the edge of the third bearing part and the exhaust holes close to the edge of the third bearing part in each sub exhaust hole group.

7. The flexible substrate as claimed in claim 1, wherein the plurality of air vent holes are arranged in a plurality of sets of air vent holes on the third carrier portion along the first direction, and two adjacent sets of air vent holes are communicated through a communicating structure and communicated to an edge of the third carrier portion through the communicating structure.

8. The flexible substrate as claimed in claim 7, wherein the communication structure includes an eighth sub-communication structure and a ninth sub-communication structure, the eighth sub-communication structure communicates with two adjacent sets of the exhaust hole sets, and the adjacent eighth sub-communication structures between the two adjacent sets of the exhaust hole sets communicate with each other through the ninth sub-communication structure and communicate with the edge of the third carrier through the ninth sub-communication structure.

9. The flexible substrate as claimed in claim 7, wherein the communication structure includes a tenth communication structure and an eleventh communication structure, the tenth communication structure communicates two adjacent sets of the exhaust hole sets, and the eleventh communication structure communicates with adjacent exhaust holes in any one of the exhaust hole sets and communicates with the edge of the third carrying portion and the exhaust hole close to the edge of the third carrying portion in any one of the exhaust hole sets.

10. The flexible substrate of any one of claims 1-9, wherein the cross-sectional shape of the communication structure is any one of an arc and a square.

11. A flexible display panel, comprising: a flexible substrate; the flexible substrate is according to any one of claims 1-10.

12. A display device, comprising: a flexible display panel according to claim 11.