CN115331551A

CN115331551A - Folding screen and electronic equipment

Info

Publication number: CN115331551A
Application number: CN202210950966.6A
Authority: CN
Inventors: 王勇; 彭辉
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2022-08-09
Filing date: 2022-08-09
Publication date: 2022-11-11

Abstract

The application discloses folding screen and electronic equipment. The foldable screen comprises a screen body and a supporting layer, wherein the screen body is provided with a display surface, the supporting layer is superposed on the surface of the screen body, which is opposite to the display surface, the screen body comprises a bendable section, the bendable section is bent when the foldable screen is in a folded state, the bendable section is flattened when the foldable screen is in an unfolded state, the supporting layer comprises a net-shaped section, which is opposite to the bendable section, the net-shaped section is connected with the bendable section and can deform along with the bendable section, the net-shaped section comprises meshes which are distributed in an array manner, two opposite side walls of the meshes are respectively provided with a first grid and a second grid, the net-shaped section is bent along with the bendable section in the process that the foldable screen is bent to the folded state along a first direction, and at least part of the first grid and the second grid of the meshes are separated; under the state of unfolding, the bendable section and the net-shaped section are both unfolded, the first grids in the net holes are abutted against the second grids, the folding screen is prevented from being bent towards the second direction, and the first direction is opposite to the second direction.

Description

Folding screen and electronic equipment

Technical Field

This application belongs to communication equipment technical field, concretely relates to folding screen and electronic equipment.

Background

Folding electronic equipment receives user's liking in general because have great display area and portable, folding screen is folding electronic equipment's important component, folding screen can switch between expansion state and fold condition, normally expand or folding in-process, folding screen's bending region can inwards cave in, however, folding screen has the risk of turning over at expansion or folding in-process, also be the bending region of folding screen outwards protruding, as shown in figure 1, folding screen turns over the life that can influence folding screen.

In order to solve the problem of the reverse folding of the folding screen, in the related art, external force can be applied to the original undeformed folding screen, and the folding screen is bent for multiple times according to the normal bending direction, so that the folding screen forms the prestress of a folding dent, and the reverse folding phenomenon is inhibited to a certain extent, but the crease of the folding screen is deepened in the way, the use experience of a user is influenced, and the service life of the folding screen is also influenced. Or, the bending area of the folding screen and the hinge moving part of the electronic device can be bonded together to inhibit the occurrence of the reverse folding phenomenon, but the smoothness of the folding screen is difficult to ensure by the method, and the use experience of a user is also influenced.

Disclosure of Invention

The embodiment of the application aims to provide a folding screen and electronic equipment, and the problem of how to well inhibit the folding screen from being folded back in the related art can be solved.

In order to solve the technical problem, the present application is implemented as follows:

in a first aspect, the invention discloses a foldable screen, which comprises a screen body and a supporting layer, wherein the screen body is provided with a display surface, the supporting layer is superposed on the surface of the screen body, which is opposite to the display surface, the screen body comprises a bendable section, the bendable section is bent when the foldable screen is in a folded state, and the bendable section is unfolded when the foldable screen is in an unfolded state; wherein:

the supporting layer comprises a reticular section opposite to the bendable section, the reticular section is connected with the bendable section and can deform along with the bendable section, the reticular section comprises meshes distributed in an array manner, two opposite side walls of the meshes are respectively provided with a first grating and a second grating,

in the process that the folding screen is bent towards the first direction to the folding state, the net-shaped section is bent along with the bendable section, and at least part of the first grids and the second grids of the meshes are separated; under the condition that the folding screen is in the unfolding state, the bendable sections and the net-shaped sections are unfolded, the first grids in the net holes are abutted against the second grids to prevent the folding screen from being bent towards a second direction, and the first direction is opposite to the second direction.

In a second aspect, the present invention also discloses an electronic device, which includes the folding screen above.

In this application embodiment, the supporting layer of folding screen includes netted section, netted section can be buckled along with the buckling of screen body, add first grid and second grid in the mesh of netted section, first grid and second grid do not influence the folding screen along the bending of first direction, but resistance when first grid and second grid can increase netted section and bend towards the second direction, thereby restrain the bending of netted section towards the second direction, and then make the folding screen be difficult for bending towards the second direction, make the folding screen be difficult for appearing the inflection phenomenon. Therefore, the problem of how to well restrain the folding screen from being folded back in the related technology can be solved.

Drawings

Fig. 1 is a schematic structural view of a folding screen in a reverse folding state in the related art;

FIG. 2 is a schematic structural diagram of a mesh segment in the related art;

FIG. 3 is an enlarged view of FIG. 2 at G;

FIG. 4 is a schematic structural diagram of a folding screen in a folded state according to an embodiment of the present application;

FIG. 5 is a schematic structural diagram of a mesh segment as disclosed in an embodiment of the present application;

FIG. 6 is an enlarged view taken at A in FIG. 5;

FIG. 7 is a cross-sectional view of the structure of FIG. 6;

fig. 8 is a view illustrating a bending test condition of the folding screen disclosed in the embodiment of the present application;

FIG. 9 is a schematic view of a foldable screen at different folding angles according to an exemplary embodiment of the present disclosure;

FIG. 10 is an enlarged view at C of FIG. 9;

FIG. 11 is an enlarged view taken at D in FIG. 9;

FIG. 12 is an enlarged view at E in FIG. 9;

FIG. 13 is an enlarged view at F of FIG. 9;

FIG. 14 is a graph of tensile and compressive load versus tensile and compressive displacement for a web segment of the related art;

fig. 15 is a graph of tensile and compressive load versus tensile and compressive displacement for a mesh segment as disclosed in an embodiment of the present application.

Description of reference numerals:

100-screen body, 110-display surface,

200-support layer, 210-mesh segment, 211-mesh, 212-first grid, 2121-first curved surface, 2122-third curved surface, 213-second grid, 2131-second curved surface, 2132-fourth curved surface, 220-transition segment, 230-half-etched segment, 240-non-bent segment.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present disclosure.

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that embodiments of the application may be practiced in sequences other than those illustrated or described herein, and that the terms "first," "second," and the like are generally used herein in a generic sense and do not limit the number of terms, e.g., the first term can be one or more than one. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

Referring to fig. 4 to fig. 15, an embodiment of the present application discloses a foldable screen, which can be applied to an electronic device. The disclosed folding screen includes a screen body 100 and a support layer 200.

The screen body 100 has a display surface 110, when the folding screen is installed in the electronic equipment, the display surface 110 constitutes the partial surface of electronic equipment, supporting layer 200 superpose on the screen body 100 with the display surface 110 on the back of the body surface mutually, be used for supporting screen body 100, supporting layer 200 can be connected with screen body 100 through the mode that bonds, screen body 100 is including the section of can buckling, the section of can buckling flexible deformation, so that the folding screen is collapsible, be in under fold condition at the folding screen, the section of can buckling, and the folding screen forms the inside sunken curved surface structure in middle part of display surface 110, be in under the expansion state at the folding screen, the section of can buckling is flat.

The supporting layer 200 includes a mesh section 210 opposite to the bendable section, the mesh section 210 is connected to the bendable section and can be deformed along with the bendable section, the mesh section 210 includes mesh holes 211 distributed in an array, and two opposite sidewalls of the mesh holes 211 are respectively provided with a first grid 212 and a second grid 213.

In the process that the folding screen is bent towards the first direction to the folding state, the net section 210 is bent along the bendable section, the net section 210 is stretched, the first grid 212 and the second grid 213 of at least part of the meshes 211 are separated, namely, the first grid 212 and the second grid 213 move relatively towards the direction away from each other, or the first grid 212 and the second grid 213 have the moving trend of being separated from each other, and the first grid 212 and the second grid 213 do not obstruct the normal folding of the folding screen, so that the folding screen can be bent to the folding state.

When the foldable screen is in the unfolded state, the bendable sections and the mesh sections 210 are both unfolded, and the first grids 212 and the second grids 213 in the respective meshes 211 are abutted to prevent the foldable screen from being bent toward the second direction, which is opposite to the first direction.

When the folding screen has the tendency of bending towards the second direction, the netted section 210 has the tendency of being compressed, the first grid 212 and the second grid 213 have the tendency of relative movement towards the direction that is close to each other, because the first grid 212 and the second grid 213 are mutually contradicted under the expansion state, then conflict resistance can be produced between the first grid 212 and the second grid 213, block the folding screen towards the bending of second direction, make the difficulty that the netted section 210 bends towards the second direction be greater than towards the difficulty that the first direction was bent, and then make the folding screen towards the degree of difficulty that the second direction was bent to be greater than towards the difficulty that the first direction was bent, finally make the folding screen difficult towards the second direction to bend, the folding screen is difficult for appearing the inflection phenomenon.

In the embodiment of the present application, the supporting layer 200 of the folding screen includes the mesh section 210, the mesh section 210 may be bent along with the bending of the screen body 100, the first grid 212 and the second grid 213 are additionally arranged in the mesh 211 of the mesh section 210, the first grid 212 and the second grid 213 do not affect the bending of the folding screen along the first direction, but the first grid 212 and the second grid 213 can increase the resistance of the mesh section 210 when bending towards the second direction, so as to suppress the bending of the mesh section 210 towards the second direction, and further make the folding screen not easily bend towards the second direction, so that the folding screen is not easily folded back. Therefore, the problem of how to better inhibit the folding screen from being folded back in the related art can be solved.

In addition, the service life of the folding screen cannot be influenced by the mesh section 210 in the application, and the problem that the flatness of the folding screen is influenced by the fact that the mesh section 210 is required to be bonded to other components inside the electronic equipment does not exist.

In a further aspect, first grid 212 can have a first arcuate surface 2121, second grid 213 can have a second arcuate surface 2131, first arcuate surface 2121 and second arcuate surface 2131 are opposite, and first arcuate surface 2121 and second arcuate surface 2131 can be adjacent to a side of mesh 211 facing screen body 100, and the radii of first arcuate surface 2121 and second arcuate surface 2131 can be equal. In the process that the folding screen is bent towards the first direction, the first arc-shaped surface 2121 and the second arc-shaped surface 2131 rotate relatively and are gradually separated, so that the first grid 212 and the second grid 213 can rotate relatively smoothly until being separated from each other, coordination of the first grid 212 and the second grid 213 is ensured when the mesh section 210 is bent integrally, and the first grid 212 and the second grid 213 are prevented from being clamped with each other to influence the bending process of the folding screen towards the first direction.

In addition, each of the first and

second arc surfaces

2121 and 2131 is smooth, so that the problem that the tip of each of the first and

second grids

212 and 213 scratches the screen body 100 when the tip is formed can be avoided, and the function of protecting the screen body 100 can be achieved.

In the case that the folding screen is mounted to an electronic device, the support layer 200 is used to be connected to the electronic device, and at least a portion of the support layer 200 is disposed opposite to a portion of the components inside the electronic device, if the first and

second grids

212 and 213 have pointed ends, the first and

second grids

212 and 213 may scratch and damage other components inside the electronic device during the folding or unfolding of the electronic device.

To address the above issues, first grid 212 may have a third arcuate surface 2122, third arcuate surface 2122 may smoothly transition with first arcuate surface 2121, second grid 213 may have a fourth arcuate surface 2132, fourth arcuate surface 2132 may smoothly transition with third arcuate surface 2122, third arcuate surface 2122 may oppose fourth arcuate surface 2132, and third arcuate surface 2122 and fourth arcuate surface 2132 may be adjacent a side of mesh opening 211 remote from screen body 100, and the radii of third arcuate surface 2122 and fourth arcuate surface 2132 may be equal. In this case, the third arc surface 2122 and the fourth arc surface 2132 are smooth, so as to avoid the problem that the internal components of the electronic device are scratched by the first grille 212 and the second grille 213 when the foldable screen is folded or unfolded.

When the folding screen has a tendency to be folded toward the second direction, third curved surface 2122 and fourth curved surface 2132 press each other to generate an interference resistance force that inhibits the folding screen from being folded toward the second direction, and the larger the contact area between third curved surface 2122 and fourth curved surface 2132, the better the effect of inhibiting the folding screen from being folded toward the second direction. Thus, in embodiments of the present application, the radius of third arcuate surface 2122 and fourth arcuate surface 2132 may each be less than the radius of first arcuate surface 2121, and the radius of third arcuate surface 2122 and fourth arcuate surface 2132 may each be less than the radius of second arcuate surface 2131.

In this case, the contact area between the third arc surface 2122 and the fourth arc surface 2132 can be increased by reducing the radius of the third arc surface 2122 and the radius of the fourth arc surface 2132, so that the third arc surface 2122 and the fourth arc surface 2132 have a larger contact area, and the reliability of the first grid 212 and the second grid 213 in suppressing the folding screen from being bent toward the second direction is improved.

In a further technical solution, the first arc surface 2121 and the second arc surface 2131 may be smooth surfaces, so as to improve the smoothness of the relative rotation between the first arc surface 2121 and the second arc surface 2131, and the third arc surface 2122 and the fourth arc surface 2132 may be rough surfaces, so as to increase the resistance of the third arc surface 2122 and the fourth arc surface 2132 when rotating relatively, and further increase the resistance of the first grille 212 and the second grille 213 when bending the folding screen towards the second direction. It should be noted that smooth surface and rough surface are relative concepts, and the roughness of third curved surface 2122 and fourth curved surface 2132 is greater than the roughness of first curved surface 2121 and second curved surface 2131. Of course, the resistance to bending of the folding screen in the second direction may also be achieved entirely by a rough surface, and need not be limited to the relationship of the radius sizes described above.

When the folding screen is bent towards the first direction, the folding screen can rotate around the rotation axis, and the net-shaped section 210 can also rotate around the rotation axis, so that the bending section is deformed. In an alternative embodiment, the mesh holes 211 may be elongated holes, the length extension direction of the elongated holes may be parallel to the rotation axis direction of the mesh segment 210, and the first and

second grids

212 and 213 may be respectively located on two opposite sidewalls of the elongated holes extending in the length extension direction. In this case, the mesh 211 is formed as a long hole, which facilitates bending of the mesh section 210, and the volume of the first and

second grids

212 and 213 is reduced when the area of the mesh 211 is the same, which facilitates reduction of the weight of the mesh section 210 and facilitates light weight design of the folding screen.

In a further embodiment, the first grid 212 and the second grid 213 may be respectively located in the middle of the mesh holes 211 along the length extension direction of the elongated holes. Under the circumstances, when the first grid 212 and the second grid 213 restrain the folding screen from bending towards the second direction, in the length extending direction of the mesh 211, the acting forces of the first grid 212 and the second grid 213 are applied to the two ends of the side wall of the mesh 211 in the same size, so that the problem that the two ends of the side wall of the mesh 211 are uneven due to unequal acting forces applied to the two ends of the side wall of the mesh 211 is avoided, and the flatness of the mesh section 210 is further ensured.

Optionally, the mesh-shaped section 210 may be a metal mesh, such as a steel mesh or a titanium alloy mesh, which is relatively easy to bend and has relatively high strength, so as to better support the screen body 100.

In this embodiment, the supporting layer 200 may include a mesh section 210, two transition sections 220, two half-etched sections 230, and two non-bent sections 240, the two transition sections 220 may be respectively connected to opposite ends of the mesh section 210, the two half-etched sections 230 may be respectively connected to ends of the two transition sections 220 that are away from the mesh section 210, the two non-bent sections 240 may be respectively connected to ends of the two half-etched sections 230 that are away from the transition sections 220, and the mesh section 210, the two transition sections 220, and the two half-etched sections 230 are all opposite to the bendable section.

In this case, the two half etching sections 230 contribute to reducing the weight of the support layer 200, thereby reducing the weight of the folding screen and contributing to the lightweight design of the folding screen, the two transition sections 220 can be bonded and connected with other components of the electronic device when the folding screen is mounted on the electronic device, so as to enhance the mounting stability of the folding screen, and compared with the half etching sections 230, the transition sections 220 have smoother surfaces and are more convenient to bond. The two half-etched sections 230 and the two transition sections 220 also provide a good transition between the web section 210 and the two non-bent sections 240 when the folded screen is in the folded state.

Further, the support layer 200 may be a unitary structure, so as to enhance the strength of the support layer 200, and the transition section 220, the half-etching section 230, and the non-bending section 240 may be made of a metal material, such as steel or a titanium alloy.

The foldable screen has a bendable region and two non-bendable regions, the bendable region is located between the two non-bendable regions, and the bendable section of the screen body 100 and the mesh section 210, the two transition sections 220, and the two half etching sections 230 of the support layer 200 correspond to the bendable region of the foldable screen.

Referring to fig. 8 again, a space between A1 and B1, a space between a and B, respectively correspond to two non-bending regions of the foldable screen, a space between B1 and a corresponds to a bending region of the foldable screen, M, M respectively represents the rotation direction of the two non-bending regions, so that the two non-bending regions of the foldable screen respectively rotate around the O, O point fixed axis to perform bending test on the foldable screen, thereby obtaining the structural schematic diagram of the foldable screen shown in fig. 9 when the foldable screen is at different bending angles, and the foldable screen does not have the phenomenon of reverse bending.

Fig. 10 is a state diagram of the first and

second grids

212 and 213 positioned at the middle of the mesh section 210 when the folded screen is bent at 2.7 ℃, fig. 11 is a state diagram of the first and

second grids

212 and 213 positioned at the edge of the mesh section 210 when the folded screen is bent at 2.7 ℃, fig. 12 is a state diagram of the first and

second grids

212 and 213 positioned at the middle of the mesh section 210 when the folded screen is bent at 11.7 ℃, and fig. 13 is a state diagram of the first and

second grids

212 and 213 positioned at the edge of the mesh section 210 when the folded screen is bent at 11.7 ℃.

It can be seen that when the folding screen is in the flat state, the first grid 212 and the second grid 213 interfere with each other, and during the folding of the folding screen, as the folding angle increases, the first grid 212 and the second grid 213 start to separate, and the mesh section 210 starts to separate from the first grid 212 and the second grid 213 in the middle area, and the first grid 212 and the second grid 213 gradually diffuse to the edge area of the mesh section 210 separate, and finally, as the folding angle further increases, the first grid 212 and the second grid 213 in all the meshes 211 of the mesh section 210 maintain the separated state.

As shown in fig. 1, when the folding screen in the related art is folded back, that is, when the folding screen is bent toward the second direction, the mesh-shaped segment 210 is in a compressed state, and as shown in fig. 4, when the folding screen is bent toward the first direction, the mesh-shaped segment 210 is in a stretched state.

Referring again to fig. 14 and 15, fig. 14 is a graph of tensile and compressive load versus tensile and compressive displacement for a web segment 210 of the related art, and fig. 15 is a graph of tensile and compressive load versus tensile and compressive displacement for a web segment 210 of the present application. Where the abscissa represents displacement, and the positive number in the abscissa represents displacement that occurs when the web segments 210 are in tension, the absolute value of the negative number in the abscissa represents displacement that occurs when the web segments 210 are in compression, the ordinate represents tensile or compressive load, the positive number in the ordinate represents the magnitude of the tensile load, and the absolute value of the negative number in the ordinate represents the magnitude of the compressive load.

It can be seen that when the same tensile and compressive loads are applied to the web segments 210 in the related art, the web segments 210 extend and contract equally, and the tensile stiffness and the compressive stiffness of the web segments 210 in the related art are equal, and the folding screen can not be inhibited from being folded back. When the same tensile and compressive loads are applied to the mesh-shaped section 210 in the present application, the extended distance of the mesh-shaped section 210 is greater than the shortened distance of the mesh-shaped section 210, and the tensile stiffness of the mesh-shaped section 210 in the present application is smaller than the compressive stiffness, that is, the difficulty of bending the mesh-shaped section 210 towards the first direction is smaller than the difficulty of bending towards the second direction, so that the mesh-shaped section 210 in the present application can inhibit the folding screen from bending towards the second direction.

Based on the folding screen of the above-mentioned embodiment of this application, this application still discloses an electronic equipment, includes foretell folding screen. The derivation process of the beneficial effect generated by the electronic device is substantially similar to the derivation process of the beneficial effect brought by the folding screen, and therefore, the description is omitted here.

The electronic equipment disclosed by the embodiment of the application can be a smart phone, a tablet computer, an electronic reader or wearable equipment. Of course, the electronic device may also be other devices, which is not limited in this embodiment of the application.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A folding screen is characterized by comprising a screen body and a supporting layer, wherein the screen body is provided with a display surface, the supporting layer is superposed on the surface of the screen body, which is opposite to the display surface, the screen body comprises a bendable section, the bendable section is bent when the folding screen is in a folding state, and the bendable section is unfolded when the folding screen is in an unfolding state; wherein:

in the process that the folding screen is bent towards the first direction to the folding state, the net-shaped section is bent along with the bendable section, and at least part of the first grids and the second grids of the meshes are separated; under the condition that the folding screen is in the unfolding state, the bendable sections and the net-shaped sections are both unfolded, the first grids in the net holes are abutted against the second grids so as to prevent the folding screen from being bent towards a second direction, and the first direction is opposite to the second direction.

2. A foldable screen according to claim 1, wherein the first grille has a first arcuate surface and the second grille has a second arcuate surface, the first arcuate surface and the second arcuate surface being opposed and the first arcuate surface and the second arcuate surface being adjacent a side of the mesh opening facing the screen body.

3. A folding screen as recited in claim 2, wherein the first grid has a third arcuate surface in smooth transition with the first arcuate surface, the second grid has a fourth arcuate surface in smooth transition with the second arcuate surface, the third arcuate surface is opposite the fourth arcuate surface, and the third arcuate surface and the fourth arcuate surface are adjacent a side of the mesh opening facing away from the screen body.

4. A folded screen according to claim 3, wherein the radii of the third and fourth arcuate surfaces are each smaller than the radius of the first arcuate surface and the radii of the third and fourth arcuate surfaces are each smaller than the radius of the second arcuate surface.

5. A folding screen as recited in claim 3, wherein the first and second arcuate surfaces are smooth surfaces and the third and fourth arcuate surfaces are rough surfaces.

6. A folding screen according to claim 1 wherein said mesh openings are elongated openings having a length extending parallel to the direction of the axis of rotation of said web sections, said first and second grids being located on opposite side walls of said elongated openings extending in the length direction.

7. A folding screen according to claim 6 wherein said first and second grids are respectively located in the middle of said mesh openings along the length extension of said elongated apertures.

8. A folding screen as claimed in claim 1 wherein the mesh segments are metal mesh.

9. A folding screen according to claim 1 wherein the support layer comprises the web, two transition sections, two half-etched sections and two non-bent sections, the two transition sections are connected to opposite ends of the web, the two half-etched sections are connected to ends of the two transition sections facing away from the web, the two non-bent sections are connected to ends of the two half-etched sections facing away from the transition, and the web, the two transition sections and the two half-etched sections are opposite to the bendable section.

10. An electronic device characterized by comprising the folding screen of any one of claims 1 to 9.