CN114822268A

CN114822268A - Supporting plate, display screen assembly and flexible screen electronic equipment

Info

Publication number: CN114822268A
Application number: CN202210613230.XA
Authority: CN
Inventors: 刘宇; 龚河卿; 范鹏辉
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2022-05-31
Filing date: 2022-05-31
Publication date: 2022-07-29

Abstract

The application relates to a supporting plate, a display screen assembly and a flexible screen electronic device. The support plate is applied to flexible screen electronic equipment and comprises a carbon fiber layer and a conductive film layer, wherein the carbon fiber layer is formed by weaving warp and weft made of carbon fiber materials; the conductive film layer is positioned on at least part of the warp threads and/or the warp threads and is used for improving the conductivity of the carbon fiber layer. The display screen assembly comprises a flexible display screen and a supporting plate, wherein the supporting plate and the flexible display screen are stacked and arranged for supporting the flexible display screen and enabling the flexible display screen to be grounded. A flexible screen electronic device includes a side panel display screen assembly. By replacing the steel sheet in the related art with the support plate in the embodiment of the application, the weight of the support plate is greatly reduced under the condition of ensuring the grounding performance of the flexible display screen, and further the weight of the flexible screen electronic equipment is reduced.

Description

Supporting plate, display screen assembly and flexible screen electronic equipment

Technical Field

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

Background

Because of the good bending property of the steel sheet, the display screen component of the flexible screen electronic device (such as a mobile phone) is usually supported and fixed by the steel sheet. Meanwhile, the steel sheet has good conductivity, and the flexible display screen is convenient to ground. However, the steel sheet has too high density, so that the weight of the steel sheet is too large, and the steel sheet occupies too large proportion of the weight of the flexible screen electronic equipment.

Disclosure of Invention

The application provides backup pad, display screen subassembly and flexible screen electronic equipment, is guaranteeing to reduce under the prerequisite of flexible display screen's ground connection performance the weight of backup pad, and then reduce flexible screen electronic equipment's weight.

The embodiment of the application provides a supporting plate, is applied to in the flexible screen electronic equipment, includes:

the carbon fiber layer is formed by weaving warps and wefts made of carbon fiber materials; and

the conductive film layer is positioned on at least part of the warp yarns and/or the warp yarns and is used for improving the conductivity of the carbon fiber layer.

The embodiment of the application further provides a display screen assembly, which is applied to a flexible screen electronic device, and includes:

a flexible display screen; and

the supporting plate and the flexible display screen are stacked and arranged and used for supporting the flexible display screen and enabling the flexible display screen to be grounded.

The embodiment of the present application further provides a flexible screen electronic device, including:

a display screen assembly;

the grounding foam is positioned on one side, away from the flexible display screen, of the supporting plate; and

the shell assembly comprises a folding rotating shaft, a first shell and a second shell, wherein the first shell and the second shell are connected to two ends of the folding rotating shaft;

the first shell is fixed and electrically connected with one fixing area through the grounding foam, and the second shell is fixed and electrically connected with the other fixing area through the grounding foam.

According to the support plate provided by the embodiment of the application, the support plate is made of the carbon fiber layer, so that the weight of the support plate is greatly reduced; through set up the electrically conductive rete on carbon fiber layer surface to remedy the relatively poor defect of carbon fiber layer electric conductivity nature, improve the electric conductivity of backup pad. The backup pad that this application embodiment provided replaces the steel sheet among the correlation technique through the carbon fiber layer, under the prerequisite of guaranteeing the grounding performance of flexible display screen, greatly alleviates the weight of backup pad, and then reduces flexible screen electronic equipment's weight.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description 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 perspective view of a flexible-screen electronic device provided by an embodiment of the present application;

FIG. 2 is an exploded schematic view of the flexible screen electronic device shown in FIG. 1;

FIG. 3 is a schematic cross-sectional view of a flexible screen electronic device of the related art;

FIG. 4 is a schematic cross-sectional view of the flexible screen electronic device shown in FIG. 1;

FIG. 5 is a schematic cross-sectional view of a variation of the flexible screen electronic device shown in FIG. 4;

FIG. 6 is a schematic cross-sectional view of the carbon fiber layer of the support plate in the flexible screen electronic device shown in FIG. 5;

FIG. 7 is a cross-sectional schematic view of the support plate and housing assembly shown in FIG. 4 engaged;

FIG. 8 is a schematic cross-sectional view of a variation of the carbon fiber layer shown in FIG. 6;

FIG. 9 is a cross-sectional schematic view of the support plate of FIG. 8 mated with the housing assembly;

FIG. 10 is a schematic cross-sectional view of the carbon fiber layer shown in FIG. 6 mated with a first conductive film layer;

fig. 11 is a schematic perspective view of a jig and a pressing plate for coating the first conductive film shown in fig. 10;

FIG. 12 is a schematic cross-sectional view of the carbon fiber layer of FIG. 10 in combination with a variation of the first conductive film layer;

fig. 13 is a schematic perspective view of a jig and a pressing plate for coating the first conductive film shown in fig. 12;

FIG. 14 is a schematic cross-sectional view of the carbon fiber layer of FIG. 6 mated with a first conductive film layer and a second conductive film layer;

FIG. 15 is a schematic cross-sectional view of the carbon fiber layer of FIG. 8 mated with first and second conductive film layers;

FIG. 16 is a perspective view of a jig and a pressing plate for plating the second conductive film shown in FIG. 15;

FIG. 17 is a schematic cross-sectional view of another embodiment of the carbon fiber layer shown in FIG. 6;

fig. 18 is a schematic structural diagram of an electronic device provided in an embodiment of the present application.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be noted that the following examples are only illustrative of the present application, and do not limit the scope of the present application. Likewise, the following examples are only some examples and not all examples of the present application, and all other examples obtained by a person of ordinary skill in the art without any inventive work are within the scope of the present application.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

Referring to fig. 1, fig. 1 is a schematic perspective view of an electronic device according to an embodiment of the present disclosure. The present application provides a flexible screen electronic device 1000. In particular, the flexible screen electronic device 1000 may be any of a variety of types of computer system devices (only one modality shown in fig. 1 by way of example) that are mobile or portable and that perform wireless communications. In particular, the flexible-screen electronic device 1000 may be a mobile or smart phone (e.g., an iPhone (TM) based, Android (TM) based phone), a Portable gaming device (e.g., a Nintendo DS (TM), PlayStation Portable (TM), Game Advance (TM), iPhone (TM)), a laptop, a PDA, a Portable Internet device, a music player, and data storage device, other handheld devices, and devices such as a headset, among others, and the flexible-screen electronic device 1000 may also be other wearable devices that require charging (e.g., a Head Mounted Device (HMD) such as an electronic bracelet, an electronic necklace, an electronic device, or a smart watch).

The flexible screen electronic device 1000 may also be any of a number of electronic devices including, but not limited to, cellular phones, smart phones, other wireless communication devices, personal digital assistants, audio players, other media players, music recorders, video recorders, other media recorders, radios, medical devices, vehicle transportation equipment, calculators, programmable remote controllers, pagers, laptop computers, desktop computers, printers, netbook computers, Personal Digital Assistants (PDAs), Portable Multimedia Players (PMPs), moving Picture experts group (MPEG-1 or MPEG-2) Audio layer 3(MP3) players, portable medical devices, and digital cameras and combinations thereof.

In some cases, the flexible screen electronic device 1000 may perform multiple functions (e.g., playing music, displaying videos, storing pictures, and receiving and sending telephone calls). If desired, the flexible screen electronic device 1000 may be a device such as a cellular telephone, media player, other handheld device, wrist watch device, pendant device, earpiece device, or other compact portable device.

Referring to fig. 2, fig. 2 is an exploded view of the flexible screen electronic device shown in fig. 1. The flexible screen electronic device 1000 may include, but is not limited to, a display screen assembly 100, a housing assembly 200, and a ground foam 300. The housing assembly 200 may include a folding hinge 201 and first and

second housings

202 and 203 coupled to both ends of the folding hinge 201 such that the housing assembly 200 can be unfolded or folded. When the housing assembly 200 is in the fully unfolded state, the first housing 202 and the second housing 203 can be located on the same plane, and the display screen assembly 100 is located on the same side of the first housing 202 and the second housing 203; when the housing assembly 200 is in the fully folded state, the first housing 202 may be parallel to or fit to the second housing 203, and the display screen assembly 100 is located between the first housing and the second housing 203. One end of the display screen assembly 100 can be fixed on the first casing 202 through the grounding foam 300 and electrically connected with the first casing 202, and the other end can be fixed on the second casing 203 through the grounding foam 300 and electrically connected with the second casing 203, so that the display screen assembly 100 can be unfolded along with the unfolding of the casing assembly 200 and can be folded along with the folding of the casing assembly.

It should be noted that the terms "first", "second" and "third" in the present application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of indicated technical features. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of the feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless explicitly specifically limited otherwise.

The display screen assembly 100 may include a support plate 10 and a flexible display screen 20 attached to the support plate 10. Wherein, the surface of one end of the support plate 10 departing from the flexible display screen 20 is connected with the first housing 202 through the grounding foam 300, and the surface of the other end departing from the flexible display screen 20 is connected with the second housing 203 through the grounding foam 300. With such an arrangement, on the one hand, the support plate 10 can support and fix the flexible display screen 20, so that the flexible display screen 20 can be unfolded or tracked along with the support plate 10, and on the other hand, static electricity generated by the flexible display screen 20 can be guided into the housing assembly 200 through the support plate 10 and the grounding foam 300, so as to realize grounding of the flexible display screen 20.

Referring to fig. 3, fig. 3 is a schematic cross-sectional view of a flexible screen electronic device in the related art. In the related art, the support plate 600 is mostly made of a steel sheet because the steel sheet has good bending performance and electrical conductivity. However, due to the excessive density of the steel sheet, the weight of the steel sheet is excessive, and the proportion of the steel sheet occupying the weight of the flexible screen electronic device 1000 is excessive. Even if the weight of the steel sheet is reduced by thinning the steel sheet and arranging lightening holes in the steel sheet, the weight reduction of the steel sheet is still limited under the condition of ensuring the supporting performance of the steel sheet.

Referring to fig. 4 and 5 together, fig. 4 is a schematic cross-sectional view of the flexible-screen electronic device shown in fig. 1, and fig. 5 is a schematic cross-sectional view of a modification of the flexible-screen electronic device shown in fig. 4. The embodiments of the application provide a novel support plate 10, and the support plate 10 may include a carbon fiber layer 11 and a conductive film layer 12 on the carbon fiber layer 11. The carbon fiber layer 11 is formed by weaving warps 1101 and wefts 1102 made of carbon fiber, and the conductive film layer 12 is disposed on at least a portion of the warps 1101 and/or the wefts 1102 to improve the conductivity of the support plate 10.

The conductive film layer 12 is formed on at least one side surface of the carbon fiber layer 11 to improve the conductive performance of the support plate 10. Specifically, the conductive film layer 12 may be located on a surface of the carbon fiber layer 11 facing the display screen assembly 20 (as shown in fig. 4), or the conductive film layer 12 may be located on a surface of the carbon fiber layer 11 facing away from the display screen assembly 20 (not shown), so as to improve the conductive performance of the support plate 10. Alternatively, the conductive film layers 12 may be disposed on opposite surfaces of the carbon fiber layers 11 (as shown in fig. 5) to enhance the electrical conductivity of the support plate 10. That is, at least one side surface of the carbon fiber layer 11 may be provided with the conductive film layer 12.

Understandably, first, the density of the carbon fibers is very low (only 1.81 g/cm) ³ ) Therefore, the support plate 10 is made of carbon fiber, so that the weight of the support plate 10 can be greatly reduced. Secondly, the carbon fiber has significant anisotropy in shape, is soft, can be processed into various fabrics, and shows high strength along the fiber axis direction, so that the support plate 10 made of the carbon fiber material can effectively ensure the support strength and the bending performance of the support plate 10. Furthermore, the carbon fiber has high temperature resistance, friction resistance, electrical conductivity, thermal conductivity, and corrosion resistance, so that the support plate 10 can be used in various complex environments. Although the carbon fiber resistance is about 100 ohm and is a poor conductor, the conductive film layer 12 can effectively improve the electrifying effect of the carbon fiber layer 11, and ensure the connection of the flexible display screen 20 on the premise of realizing the purpose of reducing the weight of the support plate 10And (5) ground effect.

Alternatively, the carbon fiber layer 11 may include at least one layer of carbon fiber cloth 110 (as shown in fig. 5), which is formed by weaving warp 1101 and weft 1102 made of carbon fiber. That is, the carbon fiber layer 11 is formed by weaving warp 1101 and weft 1102 made of carbon fiber. For example, the carbon fiber layer 11 may include two or more layers of carbon fiber cloth 110, and the two or more layers of carbon fiber cloth 110 are stacked to satisfy the requirements of the support plate 10 in terms of strength, bending performance, and the like. Understandably, the carbon fiber material is soft and easy to deform, so that the single-layer carbon fiber is poor in supporting performance along the thickness direction, and the two or more layers of carbon fiber cloth 110 are stacked, so that the supporting performance of the carbon fiber layer 11 in the thickness direction can be effectively improved, and the consistency and the fluency of the flexible display screen 20 in the unfolding or folding process are improved.

Referring to fig. 6 and 7, fig. 6 is a schematic cross-sectional view of a carbon fiber layer of a support plate in the flexible screen electronic device shown in fig. 5, and fig. 7 is a schematic cross-sectional view of the support plate shown in fig. 4 and a housing assembly. In this embodiment, the carbon fiber layer 11 may include a bending region 111 and two fixing regions 112 (e.g., a first fixing region 112a and a second fixing region 112b) respectively connected to two sides of the bending region 111, and the rigidity of the bending region 111 is less than that of the fixing regions 112, so that the bending region 111 can be bent under a smaller acting force. Specifically, the first fixing area 112a is correspondingly fixed on the first housing 202, the second fixing area 112b is correspondingly fixed on the second housing 203, and the bending area 111 is disposed corresponding to the folding rotation shaft 201.

The warps 1101 and the wefts 1102 may be enclosed to form a plurality of grid structures 1103, and specifically, the grid structures 1103 may include a plurality of first grids 1103a and a plurality of second grids 1103b, where the first grids 1103a are located in the bending regions 111 and the second grids 1103b are located in the fixing regions 112, that is, the warps 1101 and the wefts 1102 are enclosed to form a plurality of first grids 1103a located in the bending regions 111 and a plurality of second grids 1103b located in the fixing regions 112.

It is mentioned above that the "first fixation area" referred to below may be replaced by a "second fixation area" or a "fixation area", and likewise, the "second fixation area" may be replaced by a "first fixation area" or a "fixation area", and the "fixation area" may be replaced by a "first fixation area" or a "second fixation area", that is, the "first fixation area", "second fixation area", and "fixation area" may be replaced with each other.

Optionally, at least the area of the first mesh 1103a is larger than the area of the second mesh 1103b, so that the stiffness of the bending region 111 is smaller than the stiffness of the fixing region 112, so that the bending region 111 can be bent with a smaller force. Specifically, in one embodiment, the area of each first mesh 1103a is larger than the area of the second mesh 1103b, such that the stiffness of the inflection zones 111 is less than the stiffness of the fixation zones 112. In other embodiments, the area of a portion of the first mesh 1103a is larger than that of the second mesh 1103b, and the area of another portion of the first mesh 1103a may be equal to or smaller than that of the second mesh 1103b, so that the stiffness of the bending region 111 is smaller than that of the fixing region 112. In this manner, when the flexible screen electronic device 1000 is in the folded state, the support plate 10 is substantially "U" shaped. Specifically, when the flexible screen electronic device 1000 is in a folded state, the bending region 111 is completely bent and is substantially in a semi-circular arc shape, the first bending region 111 and the second bending region 111 are arranged in parallel, and a distance between the first bending region 111 and the second bending region 111 is substantially equal to an arc diameter of the bending region 111.

In a specific embodiment, the carbon fiber layer 11 includes two layers of carbon fiber cloth 110, namely, a first carbon fiber cloth 110 and a second carbon fiber cloth 110, wherein the area of the first mesh 1103a on the first carbon fiber cloth 110 is equal to the area of the first mesh 1103a on the second carbon fiber cloth 110. The first grids 1103a on the first carbon fiber sheet 110 may correspond to and communicate with the first grids 1103a on the second carbon fiber sheet 110 one by one, so that the first carbon fiber sheet 110 and the second carbon fiber sheet 110 are arranged in an aligned manner, and the bending region 111 of the carbon fiber layer 11 forms a through hole penetrating through the carbon fiber layer 11, so as to reduce the rigidity of the bending region 111. In other embodiments, the first mesh 1103a on the first carbon fiber cloth 110 may be offset from the corresponding first mesh 1103a on the second carbon fiber cloth 110, so that the carbon fiber layer 11 forms blind holes to reduce the rigidity of the bending region 111.

In yet another embodiment, the carbon fiber layer 11 includes two layers of carbon fiber cloth 110, i.e., a first carbon fiber cloth 110 and a second carbon fiber cloth 110, wherein the area of the first mesh 1103a on the first carbon fiber cloth 110 may be larger than the area of the first mesh 1103a on the second carbon fiber cloth 110. That is, the first carbon fiber cloth 110 may or may not have the same specification as the second carbon fiber cloth 110.

Referring to fig. 8 and 9 together, fig. 8 is a schematic cross-sectional view of a variation of the carbon fiber layer shown in fig. 6, and fig. 9 is a schematic cross-sectional view of the support plate shown in fig. 8 mated with the housing assembly. Optionally, the carbon fiber layer 11 may further include two transition bending regions 113 (specifically, a first transition bending region 113a and a second transition bending region 113b) respectively connecting the bending region 111 and the fixing region 112, wherein the stiffness of the transition bending region 113 is less than the stiffness of the fixing region 112, so that the transition bending region 113 is pliable. Specifically, the first transitional bending region 113a connects one side of the first fixing region 112a and the bending region 111, and the second transitional bending region 113b connects the other side of the second fixing region 112b and the bending region 111 away from the first transitional bending region 113 a.

It is mentioned above that the "first transition bending zone" referred to below may be replaced by a "second transition bending zone" or a "transition bending zone", and likewise, the "second transition bending zone" may be replaced by a "first transition bending zone" or a "transition bending zone", and the "transition bending zone" may be replaced by a "first transition bending zone" or a "second transition bending zone", i.e. the "first transition bending zone", the "second transition bending zone" and the "transition bending zone" may be replaced by each other.

The first fixing area 112a corresponds to and is fixed on the first housing 202, and the second fixing area 112b corresponds to and is fixed on the second housing 203, so that the shape of the support plate 10 can be changed along with the unfolding or folding of the housing assembly 200. The bending region 111 corresponds to and abuts against the folding rotating shaft 201, the first transition bending region 113a corresponds to and abuts against a region where the first housing 202 is connected with the folding rotating shaft 201, and the second transition bending region 113b corresponds to and abuts against a region where the second housing 203 is connected with the folding rotating shaft 201, so that when the flexible screen electronic device 1000 is in a folded state, the bending region 111 can be completely bent, and the transition bending region 113 can be slightly bent.

Specifically, when the flexible screen electronic device 1000 is in the folded state, the bending region 111 is completely bent and approximately in a semi-circular arc shape, and the first transition bending region 113a and the second transition bending region 113b can be slightly deformed and approach each other, so that the distance between the first bending region 111 and the second bending region 111 is far smaller than the circular arc diameter of the bending region 111, and the support plate 10 is approximately in a "water droplet" shape.

It can be understood that, in the carbon fiber layer 11 provided in this embodiment, the transition bending region 113 is additionally disposed in the bending region 111, so that when the flexible screen electronic device 1000 is in a folded state, a distance between the first bending region 111 and the second bending region 111 can be infinitely reduced, and thus, an appearance expressive force of the flexible screen electronic device 1000 is improved.

Specifically, the mesh structure 1103 may include not only a plurality of first meshes 1103a and a plurality of second meshes 1103b, but also a plurality of third meshes 1103 c. The third grid 1103c is located on the transition bending region 113, that is, the warp 1101 and the weft 1102 surround to form a plurality of third grids 1103c located on the transition bending region 113. The area of at least a part of the third mesh 1103c is greater than or equal to the area of the second mesh 1103b, so that the stiffness of the transitional bent region 113 is less than or equal to the stiffness of the fixed region 112, and the transitional bent region 113 can be slightly deformed.

In one embodiment, the area of each first mesh 1103a is greater than the area of the third mesh 1103c, and the area of each third mesh 1103c is greater than the area of the second mesh 1103 b. In other words, the stiffness of the bending zone 111 is less than the stiffness of the transition bending zone 113, and the stiffness of the transition bending zone 113 is less than the stiffness of the fixed zone 112, so that the bending performance of the bending zone 111 is better than that of the transition bending zone 113, and the bending performance of the transition bending zone 113 is better than that of the fixed zone 112. By the above method, when the flexible screen electronic device 1000 is in a folded state, the bending region 111 can be completely bent, and the transition bending region 113 can be slightly bent.

In other embodiments, an area of a portion of the third mesh 1103c is larger than an area of the second mesh 1103b, and an area of another portion of the third mesh 1103c may be equal to or smaller than an area of the second mesh 1103b, so that the stiffness of the transitional bending region 113 is smaller than the stiffness of the fixed region 112, and the transitional bending region 113 is micro-bent.

In other embodiments, the area of the first mesh 1103a may be less than or equal to the area of the third mesh 1103c, such that the stiffness of the inflection region 111 is less than or equal to the stiffness of the transition inflection region 113, such that the transition inflection region 113 is able to buckle.

Referring to fig. 10 and 11, fig. 10 is a schematic cross-sectional view of the carbon fiber layer shown in fig. 6 and the first conductive film layer, and fig. 11 is a schematic perspective view of a jig and a pressing plate for coating the first conductive film layer shown in fig. 10. In one embodiment, the conductive film layer 12 may include a first conductive film 121, and the first conductive film 121 is located at the fixing region 112 to improve the conductive performance of the fixing region 112 in the carbon fiber layer 11. The first conductive film 121 may be located on one side surface of the carbon fiber layer 11, or may be located on both side surfaces of the carbon fiber layer 11, which is not limited herein.

Optionally, the first conductive film 121 and the bending region 111 are disposed at an interval, that is, a gap exists between the first conductive film 121 and the bending region 111, so as to prevent the first conductive film 121 from contacting the bending region 111. In this embodiment, the distance between the first conductive film 121 and the bending region 111 is greater than or equal to 1.5mm, so as to ensure the connection reliability of the first conductive film 121. It can be understood that, since the bending region 111 and the connection position are repeatedly stressed during bending, when the first conductive film 121 is located at the bending region 111 or at a position where the fixed region 112 is connected to the bending region 111, the first conductive film 121 may fall off, which affects stability and consistency of the on-resistance of the first conductive film 121, and therefore, the first conductive film 121 may only be located at the fixed region 112 and the first conductive film 121 and the bending region 111 are spaced apart from each other.

The on-resistance of the first conductive film 121 is less than 0.5 ohm, so that a metal with good conductivity can be used for the first conductive film 121, and specifically, the material of the first conductive film 121 may be one or more of silver, copper, chromium, nickel, and platinum, which are not listed here.

The thickness of the first conductive film 121 is between 300nm and 5000nm, so that the thickness of the first conductive film 121 can have a wide value range, the thickness of the first conductive film 121 can be adjusted as required, and the stability of the first conductive film 121 can be ensured.

In this embodiment, the first conductive film 121 may be formed on the surface of the carbon fiber layer 11 by one or more of pvd (physical vapor deposition), water-plating, vacuum evaporation, screen-printing, and electroplating.

Specifically, the jig 400 and the pressing plate 500 matched with the jig 400 are required to be used in the process of coating the first conductive film 121. The jig 400 may be made of a material with poor thermal conductivity, such as ceramic, to prevent the carbon fiber layer 11 from being raised due to heat accumulation. The jig 400 can be provided with a first positioning column 401, the carbon fiber layer 11 can be provided with a first positioning hole 1104, and the first positioning column 401 can be arranged in the corresponding first positioning hole 1104 in a penetrating manner, so that the carbon fiber layer 11 can be quickly and accurately positioned on the jig 400. The jig 400 may further include a second positioning column 402, the pressing plate 500 may include a second positioning hole 501, and the second positioning column 402 may be inserted into the corresponding second positioning hole 501, so as to achieve fast and accurate alignment between the pressing plate 500 and the jig 400.

The pressing plate 500 is used to cover the bending region 111 and the region where the bending region 111 connects to the fixing region 112, so that the first conductive film 121 avoids the bending region 111 and the region where the bending region 111 connects to the fixing region 112 in the process of plating, and the first conductive film 121 is located within the fixing region 112. Or, the pressing plate 500 is used to cover the bending region 111, the transition bending region 113, and the fixing region 112 connected to the transition bending region 113, so that the first conductive film 121 avoids the bending region 111, the transition bending region 113, and the region of the fixing region 112 connected to the transition bending region 113 in the film plating process, and the first conductive film 121 is located in the fixing region 112.

Referring to fig. 12 and 13, fig. 12 is a cross-sectional view illustrating a deformation of the carbon fiber layer and the first conductive film layer shown in fig. 10, and fig. 13 is a perspective view illustrating a jig and a pressing plate used for coating the first conductive film layer shown in fig. 12. In another embodiment, on the basis of the previous embodiment, that is, the conductive film layer 12 includes the first conductive film 121 located on the fixing region 112, and the first conductive film 121 and the bending region 111 are disposed at intervals, at least one functional region 1001 is disposed on the fixing region 112, wherein the first conductive film 121 covers the corresponding functional region 1001, and the shape of the first conductive film 121 corresponds to the shape of the functional region 1001, and specifically, the functional region 1001 may be a region that needs to be grounded, such as an antenna clearance region, a grounding point region, and the like. It is understood that when the shape of the first conductive film 121 corresponds to the shape of the functional region 1001, the plating area of the first conductive film 121 can be greatly reduced while ensuring the functions of the display panel assembly 100, such as grounding performance and clearance performance.

It is understood that, when the first conductive film 121 is coated, the pressing plate 500 may cover all areas of the carbon fiber layer 11 together, wherein the pressing plate 500 may be provided with coating holes 502 for the functional areas 1001, and the first conductive film 121 may be partially coated on the carbon fiber layer 11 through one or more of the coating holes 502 in the processes of physical vapor deposition coating, water coating, vacuum evaporation coating, silk screen coating, and electroplating coating.

Referring to fig. 14 to 16, fig. 14 is a schematic cross-sectional view of the carbon fiber layer shown in fig. 6, the first conductive film layer and the second conductive film layer, fig. 15 is a schematic cross-sectional view of the carbon fiber layer shown in fig. 8, the first conductive film layer and the second conductive film layer, and fig. 16 is a schematic perspective view of a jig and a pressing plate for plating the second conductive film shown in fig. 15. In yet another embodiment, the conductive film layer 12 may include not only the first conductive film 121 located in the fixed region 112, but also the second conductive film 122 located in the bending region 111, or the bending region 111 and the transition bending region 113, wherein the thickness of the conductive film is smaller than or equal to that of the first conductive film 121, so that the second conductive film 122 and the first conductive film 121 are arranged in a step shape.

Taking the carbon fiber layer 11 including the fixing region 112 and the bending region 111 as an example, if the thickness of the second conductive film 122 located on the bending region 111 is too large, when the bending region 111 is repeatedly bent, the second conductive film 122 may fall off, which affects the stability and reliability of the conduction of the second conductive film 122, and therefore the thickness of the second conductive film 122 needs to be smaller than the thickness of the first conductive film 121. On this basis, in order to make the second conductive film 122 have the same conductive performance as the first conductive film 121, the conductive performance of the material of the second conductive film 122 needs to be greater than that of the material of the first conductive film 121.

Specifically, the material of the first conductive film 12 may be one or more of copper, chromium, nickel, and platinum, and the material of the second conductive film 122 may be one or both of silver and copper. For example, when the material of the first conductive film 121 is copper, the material of the second conductive film 122 is silver or an alloy of copper and silver; when the material of the first conductive film 121 is one of chromium, nickel, and platinum, the material of the second conductive film 122 may be one of silver and copper.

Alternatively, the thickness of the second conductive film 122 is 1000nm or less. It can be understood that, when the thickness of the second conductive film 122 is less than or equal to 1000nm, it can be ensured that the second conductive film does not fall off when bent. Wherein the thickness of the first conductive film 121 is between 500nm and 5000nm, such as 1500nm or 2000nm when the thickness of the second conductive film 122 is 1000 nm; when the thickness of the second conductive film 122 is 300nm, the thickness of the first conductive film 121 can be 500nm or 800 nm.

It is to be understood that the plating of the second conductive film 122 is generally performed after the completion of the first conductive film 121. When the second conductive film 122 is plated, the pressing plate 500 covers a portion of the fixing region 112, so that the bending region 111, or the bending region 111 and the transition bending region 113 can be exposed outside the pressing plate 500, thereby facilitating the plating of the second conductive film 122.

In yet another embodiment, the thickness of the second conductive film 122 may be the same as the thickness of the first conductive film 121. Specifically, the material of the first conductive film 121 may be the same as the material of the second conductive film 122, so that the consistency of the material and the thickness of the first conductive film 121 and the second conductive film 122 can be ensured, the processing is convenient, and the conductive stability of the conductive film layer 12 can be ensured.

Referring to fig. 17, fig. 17 is a schematic cross-sectional view of another embodiment of the carbon fiber layer shown in fig. 6. In yet another embodiment, the conductive film layer 12 is coated on the surface of the warp 1101 and/or weft 1102 in the carbon fiber layer 11. In other words, the conductive film layer 12 is coated on the warp 1101 and/or the weft 1102, and the warp 1101 and the weft 1102 are woven to form the carbon fiber layer 11. In this way, the weight of the support plate 10 can be reduced, and the conductivity of the support plate 10 can be improved.

According to the support plate 10 provided by the embodiment of the application, the weight of the support plate 10 is greatly reduced by adopting the carbon fiber layer 11 for the support plate 10; through set up conductive film layer 12 on carbon fiber layer 11 surface to remedy the relatively poor defect of carbon fiber layer 11 electric conductive property, improve the electric conductivity of backup pad 10. The support plate 10 provided by the embodiment of the application replaces a steel sheet in the related art through the carbon fiber layer 11, and greatly reduces the weight of the support plate 10 on the premise of ensuring the grounding performance of the flexible display screen 20, thereby reducing the weight of the flexible screen electronic device 1000.

Referring to fig. 18, fig. 18 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Of course, the present application may also provide an electronic device 800, the electronic device 800 comprising RF circuitry 810, memory 820, input unit 830, display unit 840, sensor 850, audio circuitry 860, WiFi module 870, processor 880, power supply 890, and the like. Wherein, the RF circuit 810, the memory 820, the input unit 830, the display unit 840, the sensor 850, the audio circuit 860 and the WiFi module 870 are respectively connected with the processor 880; power supply 890 is used to provide power to the entire electronic device 100.

Specifically, the RF circuit 810 is used for transmitting and receiving signals; the memory 820 is used for storing data instruction information; the input unit 830 is used for inputting information, and may specifically include a touch panel 831 and other input devices 832 such as operation keys; the display unit 840 may include a display panel 841 and the like; the sensor 850 includes an infrared sensor, a laser sensor, etc. for detecting a user approach signal, a distance signal, etc.; a speaker 861 and a microphone (or microphone) 862 are coupled to the processor 880 via the audio circuit 860 for emitting and receiving audio signals; the WiFi module 870 is configured to receive and transmit WiFi signals, and the processor 880 is configured to process data information of the electronic device.

The above description is only a part of the embodiments of the present application, and not intended to limit the scope of the present application, and all equivalent devices or equivalent processes performed by the content of the present application and the attached drawings, or directly or indirectly applied to other related technical fields, are also included in the scope of the present application.

Claims

1. A support plate applied to a flexible screen electronic device is characterized by comprising:

2. The support plate according to claim 1, wherein the carbon fiber layer comprises a bending region and two fixing regions respectively connected to two sides of the bending region; the bending area has a stiffness less than the stiffness of the fixing area.

3. The support plate as set forth in claim 2, wherein the warp threads and the weft threads are encircled to form a plurality of first cells located in the bending region and a plurality of second cells located in the fixing region, and at least a portion of the first cells have an area larger than that of the second cells.

4. The supporting board according to claim 2, wherein the conductive film layer comprises a first conductive film, the first conductive film is located on the fixing region, and a gap exists between the first conductive film and the bending region.

5. The support plate as in claim 4, wherein the fixation area is provided with at least one functional area; the first conductive film covers the functional region, and a shape of the first conductive film corresponds to a shape of the functional region.

6. The support plate according to any one of claims 4 to 5, wherein the conductive film layer further comprises a second conductive film, the second conductive film being located on the bending region; the thickness of the second conductive film is less than or equal to the thickness of the first conductive film.

7. The support plate of claim 3, wherein the carbon fiber layer further comprises a transition bend region connecting the bend region and the fixation region; the rigidity of the transition bending area is less than that of the fixing area.

8. The support plate as in claim 7, wherein the warp and weft yarns are encircled to form a plurality of third cells located over the transitional inflection zones, wherein at least some of the third cells have an area greater than an area of the second cells.

9. The support plate according to any one of claims 7 to 8, wherein the conductive film layer further comprises a second conductive film, the second conductive film being located on the bending region and the transition bending region; the thickness of the second conductive film is less than or equal to the thickness of the first conductive film.

10. The support plate of claim 1, wherein at least one side surface of the carbon fiber layer is provided with a conductive film layer.

11. The support plate as in claim 1, wherein the carbon fiber layer comprises at least one layer of carbon fiber cloth woven from warp and weft yarns of carbon fiber.

12. A display screen assembly applied to a flexible screen electronic device, comprising:

a flexible display screen; and

a support plate according to any of claims 1-11, arranged in a stack with the flexible display and located on a non-display side of the flexible display.

13. A flexible screen electronic device, comprising:

a first housing and a second housing;

the rotating shaft is arranged between the first shell and the second shell, and the first shell and the second shell are rotatably connected through the rotating shaft so as to be unfolded or folded;

the display screen assembly of claim 12, disposed on the first and second housings and located on a same side of the first and second housings when the first and second housings are unfolded;

the first shell is fixed and electrically connected with the display screen assembly through the grounding foam, and the second shell is fixed and electrically connected with the display screen assembly through the grounding foam.