CN116696926A

CN116696926A - Support plate, flexible display screen and electronic equipment

Info

Publication number: CN116696926A
Application number: CN202210187785.2A
Authority: CN
Inventors: 刘宇; 龚河卿
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2022-02-28
Filing date: 2022-02-28
Publication date: 2023-09-05
Also published as: WO2023160130A1

Abstract

The application relates to a support plate, a flexible display screen and electronic equipment. The support plate is provided with three bending areas which are sequentially arranged at intervals along the first direction, and each bending area is provided with a plurality of through holes in a penetrating way to form a net shape; the backup pad is dull and stereotyped form structure, and can all buckle in three bending area. When the support plate is applied to the flexible display screen and is in a folding state, the middle bending area can be bent to form the bottom of the water drop shape, the area between the two adjacent bending areas can be used for being connected with a folding mechanism, smooth transition is formed between the two adjacent bending areas, and the two bending areas on two sides can be bent to form smooth transition from the connecting area to the flattening area.

Description

Support plate, flexible display screen and electronic equipment

Technical Field

The application relates to the technical field of flexible display screens, in particular to a support plate, a flexible display screen and electronic equipment.

Background

In the current flexible display screen, the screen is generally stacked on a supporting plate, the screen is supported by the supporting plate, and meanwhile, the supporting plate can be deformed to match the requirement of bending the screen. When the flexible display screen is folded in a page shape, the bending area of the flexible display screen is easy to bend and transition to cause the screen to be excessively folded to form folds, so that the problem of folds in the screen process can be solved by the water drop-shaped scheme of the bending area, but the conventional support plate cannot meet the requirement of being folded in a water drop shape.

Disclosure of Invention

Based on this, it is necessary to provide a support plate capable of satisfying the need for a drop-shaped bend, and also provide a flexible display screen having the support plate, and also provide an electronic apparatus.

The support plate is provided with three bending areas, the three bending areas are sequentially arranged at intervals along a first direction, and each bending area is provided with a plurality of through holes in a penetrating mode to form a net shape; the support plate is of a flat plate structure and can be bent in three bending areas.

When the support plate is applied to the flexible display screen and is in a folding state, the middle bending area can be bent to form the bottom of the water drop shape, the area between the two adjacent bending areas can be used for being connected with a folding mechanism, smooth transition is formed between the two adjacent bending areas, and the two bending areas on two sides can be bent to form smooth transition from the connecting area to the flattening area.

In one embodiment, the through hole extends in a strip shape along a second direction perpendicular to the first direction.

In one embodiment, the width of the through hole along the first direction is h1, and 0.08mm is less than or equal to h1 and less than or equal to 0.1mm.

In one embodiment, the plurality of through holes in the bending area are divided into a plurality of through hole columns which are uniformly distributed along the first direction, and the distance between every two adjacent through hole columns is h2, wherein h2 is more than or equal to 0.12mm and less than or equal to 0.15mm.

In one embodiment, the supporting plate is made of carbon fiber, and the thickness of the supporting plate is H, wherein H is more than or equal to 0.1mm and less than or equal to 0.15mm.

In one embodiment, the support plate includes a plurality of carbon fiber base layers, a plurality of carbon fiber base layers are stacked, and fiber directions of any two adjacent carbon fiber base layers are perpendicular.

In one embodiment, among the plurality of carbon fiber base layers, the fiber directions of the two carbon fiber base layers farthest from each other are identical.

In one embodiment, the bending region is divided into a middle region and two edge regions, and the two edge regions are located at two sides of the middle region along the first direction; the degree of density of the through holes of the two edge regions gradually decreases as it moves away from the intermediate region in the first direction.

In one embodiment, the plurality of through holes in the bending region are divided into a plurality of through hole columns distributed along the first direction, and the plurality of through holes in any one of the through hole columns are uniformly distributed at intervals along the second direction.

In one embodiment, in the middle area and/or the edge area, for any two adjacent through hole columns located in the same area, a spacer is formed by spacing any two adjacent through holes in one through hole column in the second direction, and a plurality of through holes in the other through hole column and a plurality of spacers are in one-to-one correspondence in the first direction.

In one embodiment, any one of the through holes in the other through hole row has a first midpoint in the second direction, any one of the spacers has a second midpoint in the second direction, and the first midpoints and the second midpoints are in one-to-one correspondence in the first direction.

In one embodiment, the through hole columns are uniformly distributed along the first direction, and the through hole columns are divided into a plurality of first through hole columns and a plurality of second through hole columns, and the first through hole columns and the second through hole columns are sequentially and alternately arranged along the first direction; two through holes located at two ends along the second direction in the first through hole row extend along the second direction and penetrate through the edge of the supporting plate.

In one embodiment, in the inflection region, the plurality of through-hole columns in the middle region are uniformly distributed along the first direction, and the lengths of the plurality of through-holes along the second direction are equal.

In one embodiment, the length of the through holes in the two edge regions is smaller than the length of the through holes in the middle region; the length of the through hole in the two edge regions gradually decreases as it moves away from the middle region in the first direction.

In one embodiment, the middle area of the bending area at the middle position is defined as a first middle area, and the middle areas of the two bending areas at the two sides are defined as a second middle area; the lengths of the through holes in the two second middle areas are equal and are smaller than the length of the through holes in the first middle area.

The flexible display screen comprises a screen and the supporting plate, wherein the screen is connected with the supporting plate and is laminated with the supporting plate.

An electronic device comprises the flexible display screen.

Drawings

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

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

FIG. 2 is a schematic view of the electronic device of FIG. 1 with a flexible display screen in a folded state;

FIG. 3 is a schematic view of the flexible display screen of FIG. 2 in an unfolded state;

FIG. 4 is a schematic view of an area of a support plate in the flexible display screen of FIG. 3;

FIG. 5 is an enlarged schematic view of the structure at A in the support plate shown in FIG. 4;

fig. 6 is an enlarged schematic view of the structure at B shown in fig. 5.

Detailed Description

In order that the application may be readily understood, a more complete description of the application will be rendered by reference to the appended drawings. Preferred embodiments of the present application are shown in the drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

As used herein, "electronic device" refers to a device capable of receiving and/or transmitting communication signals that includes, but is not limited to, a device connected via any one or several of the following connections:

(1) Via a wireline connection, such as via a public-switched telephone network (Public Switched Telephone Networks, PSTN), a digital subscriber line (Digital Subscriber Line, DSL), a digital cable, a direct cable connection;

(2) Via a wireless interface, such as a cellular network, a wireless local area network (Wireless Local Area Network, WLAN), a digital television network such as a DVB-H network, a satellite network, an AM-FM broadcast transmitter.

An electronic device arranged to communicate over a wireless interface may be referred to as a "mobile terminal". Examples of mobile terminals include, but are not limited to, the following electronic devices:

(1) Satellite phones or cellular phones;

(2) A personal communications system (Personal Communications System, PCS) terminal that may combine a cellular radiotelephone with data processing, facsimile and data communications capabilities;

(3) A radiotelephone, pager, internet/intranet access, web browser, notepad, calendar, personal digital assistant (Personal Digital Assistant, PDA) equipped with a global positioning system (Global Positioning System, GPS) receiver;

(4) Conventional laptop and/or palmtop receivers;

(5) Conventional laptop and/or palmtop radiotelephone transceivers, and the like.

As shown in connection with fig. 1-3, the present application protects a flexible display screen 10. The flexible display screen 10 includes a screen 20 and a support plate 30, and the screen 20 is connected to the support plate 30 and is stacked with the support plate 30. It will be appreciated that screen 20 has a display surface (not shown) for display, and that support plate 30 is attached to the side of screen 20 facing away from the display surface to provide support for screen 20. The support plate 30 is capable of bending in cooperation with the screen 20, thereby providing the flexible display screen 10 with a bendable capability, and thus enabling the flexible display screen 10 to be applied to a foldable electronic device 40. The electronic device 40 may be, but not limited to, an electronic device 40 such as a mobile phone, a tablet computer, or a portable electronic device 40 such as a smart watch, an electronic reader, etc. In the embodiment of the present application, a mobile phone will be described as an example.

The electronic device 40 includes a flexible display 10 and a housing 50, and the flexible display 10 is disposed on the housing 50. The casing 50 includes a folding mechanism 51 and two housings 52, and the folding mechanism 51 is connected between the two housings 52, thereby connecting the two housings 52 together. With the unfolding or folding of the folding mechanism 51, the two housings 52 move relative to each other, so that the flexible display screen 10 is folded or unfolded.

Specifically, the housing 52 is a hollow structure, and the electronic device 40 may further include a circuit board (not shown) and a battery (not shown), both of which may be disposed inside the housing 52. The circuit board may integrate the processor, power management module, memory unit, baseband chip, etc. of the electronic device 40. Screen 20 of flexible display 10 is communicatively coupled to a circuit board and a battery is capable of powering screen 20 and the electronic components on the circuit board. Of course, the electronic device 40 may further include a camera module (not shown), where the camera module is communicatively connected to the circuit board, and the battery can supply power to the camera module.

In particular, in the present application, the flexible display screen 10 has a bending region 11 and two planar regions 12, and the two planar regions 12 are respectively located at opposite sides of the bending region 11. The two planar areas 12 are provided in the two housings 52, respectively, and the bending area 11 is provided in the folding mechanism 51. In this way, when the folding mechanism 51 is in the folded state, the two housings 52 are stacked, or it can be understood that when the folding mechanism 51 is in the folded state, the two housings 52 can be regarded as two sheets of paper stacked together, and thus the flexible display screen 10 is folded between the two housings 52, and at this time, the whole casing 50 can protect the flexible display screen 10. When the flexible display screen 10 is folded, the two planar areas 12 are approximately attached together, and the bending area 11 is bent into a water drop shape, so that the bending area 11 in the water drop shape has a larger bending radius, and crease can be avoided when the flexible display screen is overstretched. When the flexible display 10 is unfolded to be in the unfolded state, the two planar areas 12 and the bending area 11 are coplanar and used for display.

Accordingly, the portion of the support plate 30 to be protected according to the present application corresponding to the bending region 11 needs to be naturally bent in the shape of a water drop.

As shown in fig. 1 to 5, specifically, the support plate 30 has three bending regions 31, the three bending regions 31 are sequentially arranged at intervals along the first direction, and each bending region 31 is perforated with a plurality of through holes 32 to form a net shape. The support plate 30 has a flat plate-like structure and is capable of being bent in all three bending regions 31. It will be appreciated that by providing the through holes 32, the bending region 31 can be reduced in rigidity and more easily bent than other regions not provided with the through holes 32.

The three bending regions 31 are disposed at intervals along the first direction, and therefore, a region where the through hole 32 is not opened is formed between two adjacent bending regions 31, which is defined as a connection region 33, and the two connection regions 33 are not easily bent due to the rigidity of the non-opened through hole 32, and when the flexible display screen 10 is connected to the chassis 50, both the connection regions 33 are connected to the folding mechanism 51. Specifically, the folding mechanism 51 has two symmetrically disposed limiting plates 511, in the folded state, the two limiting plates 511 are disposed obliquely with respect to each other, and the two connection areas 33 are glued to the two limiting plates 511, respectively. Further, in the present application, two bending regions 31 on both sides are symmetrically disposed on both sides of the bending region 31 on the middle position with respect to the symmetry axis M-M. And the centrally located bending region 31 itself is also arranged axisymmetrically with respect to the symmetry axis M-M. The whole of the three bending regions 31 and the two connecting regions 33 corresponds to the bending region 11 of the flexible display screen 10.

Further, the support plate 30 has a portion corresponding to the planar region 12, which is defined as a flattened region 34, and then the entire support plate 30 is sequentially flattened region 34-bent region 31-connection region 33-bent region 31-flattened region 34 in the first direction. When the flexible display 10 is connected to the housing 50, the two flattened areas 34 are connected in a one-to-one correspondence with the two shells 52.

Therefore, when the flexible display screen 10 is folded, the middle bending region 31 can be bent to form the bottom of the water drop shape, the two connecting regions 33 on two sides of the flexible display screen can be used for being connected with the folding mechanism 51, smooth transition is formed between the two adjacent bending regions 31, and the two bending regions 31 on two sides can be bent to form smooth transition from the connecting regions 33 to the flattening region 34, so that the support plate 30 can not only meet the requirement of bending the flexible display screen 10 to form the water drop shape, but also the support plate 30 can not abut against the screen 20 due to internal stress when the flexible display screen 10 is in the folded state, thereby avoiding damage to the screen 20.

Specifically, for the through hole 32 formed in the bending region 31, the through hole 32 extends in a long strip shape along a second direction perpendicular to the first direction. As shown in fig. 3 to 5, if the X-axis direction is set to be the first direction, the Y-axis direction is set to be the second direction, and the Z-axis direction is set to be the third direction of the support plate 30, the screen 20 and the support plate 30 are stacked in the third direction. In the present application, the through holes 32 extend in the Y-axis direction, and the bending region 31 is more easily bent by the reduced rigidity of the plurality of through holes 32 in the first direction. It should be noted that the "length of the through hole 32" mentioned later refers to the extension length of the through hole 32 in the second direction, that is, the distance between two points at which the through hole 32 is farthest apart in the second direction.

As shown in fig. 5 and 6 in combination, specifically, the width of the through hole 32 in the first direction is h1,0.08 mm.ltoreq.h1.ltoreq.0.1 mm. It will be appreciated that if the width of the through hole 32 in the first direction is too large, a problem of film printing may occur when the user touches the screen 20, affecting the touch feeling, and degrading the use experience. If the width of the through hole 32 in the first direction is too small, the processing difficulty is increased, and the bending difficulty of the bending region 31 is also caused by insufficient rigidity of the through hole 32 to the bending region 31. Therefore, by designing the width of the through hole 32 in the first direction, it is possible to avoid the problem of the screen 20 being printed while the bending region 31 can satisfy the bending requirement. Specifically, h1 may be a value of 0.08mm, 0.09mm, 0.1mm, or the like. It should be noted that the width of the through hole 32 in the first direction refers specifically to the distance between two points of the through hole 32 that are furthest apart in the first direction.

Specifically, the plurality of through holes 32 in the bending region 31 are divided into a plurality of through hole rows 321 uniformly distributed along the first direction, and the distance between two adjacent through hole rows 321 is h2, and h2 is 0.12mm or less and 0.15mm or less. It will be appreciated that if the distance between two adjacent through hole columns 321 is too large, the bending area 31 will have a polygonal corner after bending, so that the screen 20 will be damaged due to overspreading. If the distance between two adjacent through hole columns 321 is too small, the processing difficulty is increased, and the rigidity of the bending region 31 is too small to effectively support the screen 20, so that the operator touches the screen 20 to generate a dent. Therefore, by designing the spacing between the adjacent through-hole columns 321 and uniformly distributing the plurality of through-hole columns 321 along the first direction, the bending region 31 can exhibit a smoother bending effect while ensuring a supporting effect on the screen 20. Specifically, h2 may be a value of 0.12mm, 0.135mm, 0.15mm, or the like.

Referring again to FIG. 3, in the present application, the supporting plate 30 is made of carbon fiber, and the thickness of the supporting plate 30 is H, which is 0.1 mm.ltoreq.H.ltoreq.0.15 mm. It can be appreciated that the conventional support plate 30 is made of steel, and the density of the steel is greater than that of the carbon fiber, so that the weight of the support plate 30 is greater, the weight expressive force of the electronic device 40 is affected, and the weight of the support plate 30 made of carbon fiber can be reduced. In addition, since the conventional support plate 30 is made of steel, the through hole 32 can be processed only by etching, and thus the width of the through hole 32 along the first direction is more than 0.12mm, which further causes a problem of film printing when a user touches the screen 20, and affects the display effect. And when the support plate 30 made of carbon fiber is adopted to process the through hole 32, a special jig is adopted to support the support plate 30, the support plate 30 is fixed in a vacuum adsorption mode, then nanosecond or picosecond laser processing is adopted, and the instantaneous high temperature of laser is utilized to gasify the carbon fiber, so that the through hole 32 with the width dimension meeting the requirement is obtained.

Further, it will be appreciated that an excessive thickness of the support plate 30 occupies a large space and is disadvantageous to bending deformation of the support plate 30, while an excessively small thickness of the support plate 30 may not provide a good supporting effect on the screen 20. Specifically, the thickness H of the support plate 30 may be 0.1mm, 0.11mm, 0.12mm, 0.13mm, 0.14mm, 0.15mm, or the like.

Specifically, the support plate 30 includes a plurality of carbon fiber base layers, which are stacked, and the fiber directions of any adjacent two carbon fiber base layers are perpendicular. It will be appreciated that carbon fiber is an anisotropic material that is not only very dense but also has a high strength and modulus in the direction of the fiber, but a low strength and modulus perpendicular to the direction of the fiber. For example, DONGLIT 700 carbon fiber material has a strength of 2300MPa and a modulus of 130Gpa in the fiber direction, but has a strength of 80MPa and a modulus of 9GPa in the direction perpendicular to the fiber direction. Thus, in order to enable the support plate 30 to support the screen 20, a plurality of carbon fiber base layers are required to be laminated. In addition, the fiber directions of two adjacent carbon fiber base layers are vertical, so that the mat-like effect can be presented. In addition, the fiber directions of some carbon fiber base layers are along the first direction, and the fiber directions of the other carbon fiber base layers are along the second direction, so that the whole support plate 30 has relatively consistent performance in the first direction and the second direction when the through holes 32 are not formed, and the purpose of reducing the rigidity of the bending region 31 in the first direction is achieved only by forming the through holes 32.

Further, among the plurality of carbon fiber base layers, the fiber directions of the two carbon fiber base layers farthest from each other are identical. It is understood that the number of carbon fiber substrates is odd, so that the performance of both sides of the support plate 30 can be maintained uniform in the thickness direction of the support plate 30. In an embodiment, the support plate 30 includes three carbon fiber substrates, and the fiber types of the three carbon fiber substrates may be T700, M40, and T700 in order, and the thicknesses of the three carbon fiber substrates may be 0.03mm, 0.09mm, and 0.03mm in order. In another embodiment, the support plate 30 includes five carbon fiber base layers, and the fiber models of the five carbon fiber base layers are T700, and the thickness of each carbon fiber base layer is 0.03mm. It should be noted that, in other embodiments, the fiber model of the carbon fiber base layer may be T800, T1000, M30, or the like. In addition, for a single carbon fiber base layer, the thickness thereof is not less than 0.03mm, so that the thickness of each carbon fiber base layer can be freely set according to the total thickness of the support plate 30, and the thickness of each carbon fiber base layer in the support plate 30 can be equal or unequal.

Therefore, when the support plate 30 is manufactured, the prepregs of a plurality of carbon fiber base layers are laid in advance, the fiber directions of two adjacent carbon fiber base layers are ensured to be vertical, then the two carbon fiber base layers are molded at a high temperature of more than 100 ℃ for 30min, and then the through holes 32 are machined by laser, so that three bending areas 31 are formed, and the obtained support plate 30 can support the screen 20 and can meet the folding requirement of the flexible display screen 10.

As shown in fig. 4 to 5, in particular, in the present application, the bending region 31 is divided into a middle region 311 and two edge regions 312, and the two edge regions 312 are located at two sides of the middle region 311 along the first direction. In the first direction, the density of the through holes 32 of the two edge regions 312 gradually decreases as it moves away from the intermediate region 311. It will be appreciated that, as the density of the through holes 32 in the edge region 312 gradually decreases away from the middle region 311, the rigidity of the edge region 312 gradually increases, so that the edge region 312 forms a gradual transition of rigidity between the middle region 311 and the region where the through holes 32 are not formed, and damage to the screen 20 due to bending edges and corners between the bending region 31 and the region where the through holes 32 are not formed when bending is caused by the sudden change of rigidity is avoided.

Further, the plurality of through holes 32 in the bending region 31 are divided into a plurality of through hole rows 321 distributed along the first direction, and the plurality of through holes 32 in any one through hole row 321 are uniformly distributed at intervals along the second direction perpendicular to the first direction. It is understood that the plurality of through holes 32 in the bending region 31 may form a plurality of through hole columns 321 in a row manner, and the plurality of through hole columns 321 may be uniformly spaced along the first direction or may have unequal intervals. For the plurality of through holes 32 in the same through hole row 321, the through holes 32 are uniformly spaced along the second direction, which is understood to mean that the equal spacing is maintained between any two adjacent through holes 32, so that bending torsion of the bending region 31 in the second direction can be ensured not to occur.

In particular, in the bending region 31, the plurality of through hole columns 321 in the middle region 311 are uniformly distributed along the first direction, and the plurality of through holes 32 in the middle region 311 have equal lengths along the second direction. Thus, the through holes 32 in the middle region 311 are arranged regularly, so that the whole middle region 311 can achieve a smoother curved bending state during bending.

Further, in the present application, the length of the through-hole 32 in the two edge regions 312 is smaller than the length of the through-hole 32 in the middle region 311. In the first direction, the length of the through hole 32 in the two edge regions 312 gradually decreases as it gradually moves away from the intermediate region 311. It will be appreciated that the length of the through-holes 32 throughout the intermediate region 311 is greater than the length of the through-holes 32 in the edge region 312. And the purpose of gradually decreasing the density of the through holes 32 in the edge area 312 is achieved by gradually decreasing the length of the through holes 32. It should be noted that, in the present application, the plurality of via rows 321 in the edge region 312 are uniformly distributed along the first direction, and the pitch between any adjacent two via rows 321 is equal to the pitch between any adjacent two via rows 321 in the middle region 311. In other embodiments, it should be noted that the density of the through holes 32 in the edge area 312 is gradually reduced, which may be achieved by gradually increasing the spacing between two adjacent through hole columns 321, or by simultaneously reducing the length of the through holes 32 and increasing the spacing between two adjacent through hole columns 321. Thus, in other embodiments, the plurality of rows 321 of vias in the edge region 312 may not be uniformly distributed along the first direction. In addition, in the edge region 312, the lengths of the plurality of through holes 32 in the through hole rows 321 may be equal or unequal, or the through hole rows 321 may be formed in the second direction such that the through holes 32 of two lengths are alternately arranged according to the length.

Specifically, as shown in fig. 5, the middle region 311 defining the bending region 31 at the middle position is a first middle region 311a, and the middle regions 311 of the two bending regions 31 at the both sides are second middle regions 311b. The length of the through holes 32 in the two second intermediate regions 311b is equal and is smaller than the length of the through holes 32 in the first intermediate region 311 a. By doing so, the bending deformation capacity of the first intermediate region 311a can be made larger than that of the second intermediate region 311b, and the bending deformation capacities of the two second intermediate regions 311b are made uniform. The first middle area 311a has a relatively smooth arc shape corresponding to the bottom of the water drop shape during the bending process of the flexible display screen 10 due to relatively high deformability.

As shown in fig. 6, in the embodiment of the present application, the following features are present for the through hole rows 321 in the middle region 311 and the two edge regions 312 in the bending region 31. For any two adjacent through hole columns 321 located in the same area, the spacers 322 are formed by spacing any two adjacent through holes 32 in one through hole column 321 in the second direction, and the plurality of through holes 32 in the other through hole column 321 are in one-to-one correspondence with the plurality of spacers 322 in the first direction. It will be appreciated that there are no two through holes 32 aligned with each other in the first direction for any adjacent two through hole columns 321 of the same area, and that the two through hole columns 321 are arranged in a staggered manner in the second direction, so that any one through hole 32 corresponds to the space between two through holes 32 in the adjacent through hole columns 321 in the first direction. The plurality of spacers 322 are distributed, so as to distribute the touch force of the user and further reduce the degree of film printing on the screen 20.

Further, any one of the through holes 32 in the other through hole row 321 has a first midpoint G1 in the second direction, any one of the spacers 322 has a second midpoint G2 in the second direction, and the first midpoints G1 and the second midpoints G2 are in one-to-one correspondence in the first direction. It is understood that the first midpoint G1 is the midpoint of the length of the through hole 32, and the second midpoint G2 is the midpoint of the line connecting two closest points of two adjacent through holes 32 along the second direction. On the basis that the two adjacent through hole columns 321 are arranged in a staggered manner along the second direction, the connecting line of the first midpoint G1 and the second midpoint G2 is parallel to the first direction, so that a corresponding state is achieved. For two adjacent through hole columns 321, a plurality of first midpoints G1 exist in a plurality of through holes 32 in one through hole column 321, a plurality of second midpoints G2 exist in a plurality of spacers 322 in the other through hole column 321, and the plurality of first midpoints G1 and the plurality of second midpoints G2 are in one-to-one correspondence, so that the spacers 322 are distributed more dispersedly and uniformly, the touch acting force of a user is dispersed better, and the degree of film printing of the screen 20 is further reduced.

In the present application, the plurality of through-hole columns 321 are uniformly distributed along the first direction, the plurality of through-hole columns 321 are divided into a plurality of first through-hole columns 321a and a plurality of second through-hole columns 321b, and the first through-hole columns 321a and the second through-hole columns 321b are alternately arranged in sequence along the first direction; two through holes 32 located at both ends in the second direction in the first through hole row 321a extend in the second direction and penetrate the edge of the support plate 30. It will be appreciated that the plurality of first through-hole columns 321a and the plurality of second through-hole columns 321b together form all of the through-hole columns 321 within the inflection region 31. By making the two through holes 32 at both ends in the second direction in the first through hole row 321a penetrate the edge of the support plate 30, the bending region 31 can be made to have a zigzag shape at both edge positions in the second direction, so that the bending region 31 is reduced in rigidity at the edge in the second direction to be easily bent. The other through holes 32 in the first through hole row 321a and all the through holes 32 in the second through hole row 321b are closed at both ends without penetrating the edge of the support plate 30.

It should be noted that, with the support plate 30 of the present application, the widths of the three bending regions 31 in the first direction may be set as desired. The length range of the through hole 32 in the bending region 31 is not particularly limited, and may be set as needed.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.

Claims

1. The support plate is characterized by comprising three bending areas, wherein the three bending areas are sequentially arranged at intervals along a first direction, and each bending area is provided with a plurality of through holes in a penetrating way to form a net shape; the support plate is of a flat plate structure and can be bent in three bending areas.

2. The support plate of claim 1, wherein the through-hole extends in an elongated shape along a second direction perpendicular to the first direction.

3. The support plate of claim 2, wherein the through holes have a width h1 in the first direction of 0.08mm +.h1 +.0.1 mm.

4. The support plate according to claim 1, wherein the plurality of through holes in the bending region are divided into a plurality of through hole rows uniformly distributed along the first direction, and a distance between two adjacent through hole rows is h2, and h2 is 0.12 mm.ltoreq.h2.ltoreq.0.15 mm.

5. The supporting plate according to any one of claims 1 to 4, wherein the supporting plate is made of carbon fiber, and the thickness of the supporting plate is H, and H is 0.1 mm-0.15 mm.

6. The support plate of claim 5, wherein the support plate comprises a plurality of carbon fiber base layers, the plurality of carbon fiber base layers are arranged in a stacked manner, and the fiber directions of any two adjacent carbon fiber base layers are perpendicular.

7. The support plate according to claim 6, wherein the fiber directions of two carbon fiber base layers farthest from each other among the plurality of carbon fiber base layers coincide.

8. The support plate according to claim 2, wherein the bending region is divided into a middle region and two edge regions, the two edge regions being located on both sides of the middle region in the first direction; the degree of density of the through holes of the two edge regions gradually decreases as it moves away from the intermediate region in the first direction.

9. The support plate of claim 8, wherein a plurality of said through holes in said inflection region are divided into a plurality of through hole rows distributed along said first direction, and a plurality of said through holes in any one of said through hole rows are uniformly spaced along said second direction.

10. The support plate according to claim 9, wherein in the intermediate region and/or the edge region, for any adjacent two of the through-hole columns located in the same region, any adjacent two of the through-holes in one of the through-hole columns are spaced apart in the second direction to form a spacer portion, and a plurality of the through-holes in the other through-hole column are in one-to-one correspondence with a plurality of the spacer portions in the first direction.

11. The support plate of claim 10, wherein any one of the through holes in the other row of through holes has a first midpoint in the second direction, any one of the spacers has a second midpoint in the second direction, and a plurality of the first midpoints are in one-to-one correspondence with a plurality of the second midpoints in the first direction.

12. The support plate according to claim 9, wherein a plurality of the through-hole columns are uniformly distributed along the first direction, the plurality of through-hole columns are divided into a plurality of first through-hole columns and a plurality of second through-hole columns, and the first through-hole columns and the second through-hole columns are alternately arranged in sequence along the first direction; two through holes located at two ends along the second direction in the first through hole row extend along the second direction and penetrate through the edge of the supporting plate.

13. The support plate according to any one of claims 9 to 12, wherein in the bending region, a plurality of the through-hole columns in the intermediate region are uniformly distributed along the first direction, and a plurality of the through-holes are equal in length along the second direction.

14. The support plate of claim 13, wherein the length of the through holes in both of the edge regions is less than the length of the through holes in the intermediate region; the length of the through hole in the two edge regions gradually decreases as it moves away from the middle region in the first direction.

15. Support plate according to claim 13, characterized in that the middle area defining the bending area in the middle position is a first middle area and the middle areas of the two bending areas on both sides are second middle areas; the lengths of the through holes in the two second middle areas are equal and are smaller than the length of the through holes in the first middle area.

16. A flexible display screen comprising a screen and a support plate according to any one of claims 1 to 15, the screen being attached to and laminated with the support plate.

17. An electronic device comprising the flexible display of claim 16.