CN210073178U - Folding assembly and folding display terminal - Google Patents

Abstract

The embodiment of the application provides a folding assembly and a folding display terminal, relates to the technical field of display, and is used for reducing the probability of degumming at the bending position of the folding display terminal. The folding assembly is used for bearing the flexible screen. The folding assembly comprises a rotating shaft, a first shell, a second shell, a bending supporting piece and a flexible supporting strip. The first shell is rotatably connected with the second shell through a rotating shaft. The bending support piece comprises a flexible connecting layer and a plurality of rigid supporting strips. The rigid support bar is arranged along the axial direction of the rotating shaft. The plurality of rigid support bars are arranged side by side at intervals. The rigid support bar is connected with the flexible connecting layer. The flexible connecting layer is connected with the bending area of the flexible screen through an adhesive layer which is positioned on the surface of the flexible connecting layer facing the flexible screen. In addition, above-mentioned flexible support bar and many rigid support bars cross arrangement and be connected to through being located this flexible support bar and being connected with the bending region of flexible screen towards the glue film on the flexible screen surface.

Description

Folding assembly and folding display terminal

Technical Field

The application relates to the technical field of display, in particular to a folding assembly and a folding display terminal.

Background

With the continuous development of display technology, the foldable display terminal is gradually becoming a development trend of future mobile electronic products. The folding display terminal can obtain a larger display area in an unfolding state, and the film watching effect is improved. The folding display terminal can obtain smaller volume under the folding state, and is convenient for a user to carry.

However, in the process of use, the bending position of the folding display terminal is easy to have the problem of degumming after being bent for multiple times.

Disclosure of Invention

The embodiment of the invention provides a folding assembly and a folding display terminal, which are used for reducing the probability of degumming at the bending position of the folding display terminal.

In one aspect of an embodiment of the present application, a folding assembly is provided. The folding assembly is used for bearing a flexible screen. The folding assembly comprises a rotating shaft, a first shell, a second shell, a bending supporting piece and a flexible supporting strip. The first shell and the second shell are located on two sides of the rotating shaft, and the first shell and the second shell are rotatably connected through the rotating shaft. The bending support piece is positioned on one side of the rotating shaft, which faces the flexible screen, and is connected with the rotating shaft, the first shell and the second shell. The bending support piece comprises a flexible connecting layer and a plurality of rigid supporting strips. The rigid support bar is arranged along the axial direction of the rotating shaft. The plurality of rigid support bars are arranged side by side at intervals. The rigid support bar is connected with the flexible connecting layer. The flexible connecting layer is connected with the bending area of the flexible screen through an adhesive layer which is positioned on the surface of the flexible connecting layer facing the flexible screen. In addition, above-mentioned flexible support bar and many rigid support bars cross arrangement and be connected to through being located this flexible support bar and being connected with the bending region of flexible screen towards the glue film on the flexible screen surface. Under the condition, the rigid supporting strips can provide stronger rigidity for the bending supporting pieces, so that the bending area of the flexible screen has good impact resistance in the bending process of the folding display terminal. In addition, in order to avoid many rigid support bars and flexible screen bending area directly to be connected through the glue film, lead to bending area space department between two adjacent rigid support bars not to obtain effectual support, in the embodiment of this application, be connected flexible connection layer through lieing in its glue film and the flexible screen bending area on the surface of flexible screen of orientation, flexible support bar is connected through lieing in its flexible screen bending area of glue film on the surface of flexible screen of orientation. Because the surfaces of the flexible connecting layer and the flexible supporting strips facing the flexible screen are continuous surfaces, the contact area between the whole folding assembly and the bending area of the flexible screen can be increased, the connection between the flexible screen and the folding assembly is firmer, and the probability of degumming of the flexible screen is reduced. In addition, flexible connection layer and flexible support bar adopt flexible material to constitute, can increase in the folding assembly with the bending region partial pliability that contacts of flexible screen, at the flexible screen in-process of buckling, flexible connection layer and flexible support bar can follow the deformation in flexible screen bending region and take place deformation, are favorable to carrying out dynamic support to the flexible screen.

Optionally, the plurality of rigid support bars extend beyond at least one end of the flexible connecting layer. One flexible support bar is connected with a plurality of rigid support bars extending out of the flexible connecting layer. Thereby being convenient for and many rigid support bar crossing arrangement's flexible support bar can be connected with many above-mentioned rigid support bars.

Optionally, the rigid support bar is provided with a connection hole at a portion extending out of the flexible connection layer. The folding assembly also includes a plurality of connecting posts connected with the flexible support strip. A connecting post is snapped into a connecting hole. A spliced pole cooperatees with a connecting hole, and the spliced pole is connected with flexible support bar to can make flexible support bar and many above-mentioned rigid support bar fixed connection.

Optionally, the connection hole is a stepped hole. The first sub-hole with the small aperture in the stepped hole faces the flexible supporting strip, and the second sub-hole with the large aperture in the stepped hole faces the rotating shaft. The connecting column is a stair column. The first sub-column with the small shaft diameter in the stepped column is matched with the first sub-hole, and the second sub-column with the large shaft diameter in the stepped column is matched with the second sub-hole. When the connecting column and the flexible supporting strip are made of the same material and are of an integrated structure, one connecting column can penetrate through one connecting hole through a glue pulling process, and the connecting column is stretched. In the stretched connecting column, the interface of the first sub-column and the second sub-column is in contact with the interface of the first sub-hole and the second sub-hole in the connecting hole. Then, the part of the second sub-column extending out of the second sub-hole is reduced, so that the second sub-column with larger diameter is positioned in the second sub-hole and clamped at the interface of the first sub-hole and the second sub-hole. Because the diameter of the second sub-column is larger than the aperture of the first sub-hole, the connecting column can be separated from the connecting hole under the action of external force.

Optionally, the folding assembly further comprises a plurality of first retaining walls. A first retaining wall is connected to the end face of a portion of a rigid support bar extending beyond the flexible connecting layer. The first retaining wall is higher than the surface of the rigid supporting bar facing the flexible supporting bar. The flexible supporting bar is positioned between the first retaining wall and the flexible connecting layer. No matter the folding display terminal is in an unfolding state or a folding state, all parts on the inner side of the first retaining wall can be shielded through the first retaining wall, and therefore the purpose of providing the appearance effect of the folding display terminal is achieved.

Optionally, in the rigid supporting bar, a portion of the rigid supporting bar extending out of the flexible connecting layer is embedded in the flexible supporting bar and is integrated with the flexible supporting bar. In this case, because the material of flexible connection layer and flexible support bar is different, can carry out twice injection molding process respectively for the support piece that buckles that constitutes by rigid support bar and flexible connection layer is as an organic whole structure with flexible support bar.

Optionally, the folding assembly further comprises at least one second retaining wall. A second retaining wall is connected to a surface of the flexible support strip facing away from the flexible connecting layer. The second retaining wall is higher than the surface of the flexible supporting strip facing the flexible screen. Can block coating in the glue on flexible support bar towards flexible screen surface through the second barricade, avoid the glue outflow.

Optionally, in the bending support, the flexible connection layer is disposed near the flexible screen. Due to the fact that the surface of the flexible connection layer is smooth, after the flexible connection layer is bonded with the flexible screen, the surface smoothness of a bending area of the flexible screen can be improved, and the probability of degumming of the flexible screen is reduced.

Optionally, the adhesion between the flexible supporting strip and the glue layer located on the surface of the flexible supporting strip facing the flexible screen is greater than the adhesion between the flexible connecting layer and the glue layer located on the surface of the flexible connecting layer facing the flexible screen. Therefore, the flexible support bars can enhance the connection between the bending area of the flexible screen and the bending support piece, so that the connection between the flexible screen and the bending support piece is firmer.

Optionally, the material forming the flexible connecting layer comprises silicone. The material of the flexible support strip comprises a plastic material. Thereby make the adhesion of flexible support bar and glue film be greater than, the adhesion of flexible articulamentum and glue film.

Optionally, a side surface of the first housing facing the flexible screen is provided with a first groove, and one end of the bending support member close to the first housing is bonded in the first groove. One side surface of the second shell facing the flexible screen is provided with a second groove, and one end of the bending supporting piece close to the second shell is bonded in the second groove. The middle area of the bending support piece is connected with the rotating shaft. Through setting up above-mentioned first recess and second recess, can be so that folding assembly and flexible screen bonded's surperficial level and smooth mutually, reduce the flexible screen probability of splitting.

In another aspect of the embodiments of the present application, a foldable display terminal is provided. The folding display terminal comprises a flexible screen and any folding assembly as described above. In addition, the first non-bending region of the flexible screen is connected with the first shell in the folding assembly. The second non-bending area of the flexible screen is connected with a second shell in the folding assembly. The bending zone of the flexible screen is connected with a bending support member in the folding assembly. The bending area is located between the first non-bending area and the second non-bending area. The folding display terminal has the same technical effects as the folding assembly provided by the foregoing embodiment, and the details are not repeated herein.

Optionally, the bending support member includes a flexible connection layer, and a plurality of rigid support bars connected to the flexible connection layer. One flexible support strip in the folding assembly is connected with a plurality of rigid support strips extending out of the flexible connecting layer. The flexible screen comprises a display screen body and a cover plate. The cover plate covers the display surface of the display screen body and extends out of the periphery of the display screen body. The display screen body is connected with the bending support piece. The part of the cover plate extending out of the display screen body is connected with the flexible supporting bars. When the part that the apron stretches out the display screen body is connected with flexible support bar through the glue film, utilize the higher cohesiveness of flexible support bar and glue film, can improve flexible support bar and flexible screen overall structure's bonding strength, reduce the flexible screen probability of opening gluey. In addition, when the display screen body is connected with the flexible connecting layer through the glue layer, the flexibility of the flexible connecting layer can be utilized, and the requirement that the maximum bending angle of the flexible screen can reach is favorably ensured.

Drawings

Fig. 1 is a schematic structural diagram of a foldable display terminal according to some embodiments of the present application;

FIG. 2a is a schematic diagram of a folding assembly of FIG. 1;

FIG. 2b is another schematic structural view of the folding assembly of FIG. 1;

FIG. 3a is a schematic diagram of the foldable display terminal of FIG. 1 in a folded state;

FIG. 3b is a schematic structural diagram of the foldable display terminal shown in FIG. 1 in an unfolded state;

FIG. 4 is a schematic view of an installation of the folding assembly and flexible screen of FIG. 1;

FIG. 5 is another schematic view of the folding assembly and flexible screen of FIG. 1 mounted thereto;

FIG. 6 is another schematic diagram of the foldable display terminal of FIG. 1 in a folded state;

FIG. 7a is a schematic view of an alternative construction of the folding assembly of FIG. 1;

FIG. 7b is a bottom view taken in the direction A of FIG. 7 a;

FIG. 7c is another schematic structural view of the folding assembly of FIG. 1;

FIG. 7d is another schematic illustration of the folding assembly of FIG. 1;

fig. 8a is a schematic structural diagram of another foldable display terminal provided in some embodiments of the present application;

FIG. 8b is a schematic view of a configuration of the folding assembly of FIG. 8 a;

FIG. 9a is a schematic view of another alternative folding assembly provided in accordance with certain embodiments of the present application;

FIG. 9b is a schematic view of another alternative folding assembly provided in accordance with certain embodiments of the present application;

FIG. 10 is a schematic illustration of a flexible screen according to some embodiments of the present application;

fig. 11 is a schematic structural diagram of another foldable display terminal provided in some embodiments of the present application;

fig. 12 is a schematic structural diagram of another foldable display terminal provided in some embodiments of the present application;

FIG. 13a is a schematic view of a flexible support bar to rigid support bar connection configuration according to some embodiments of the present application;

FIG. 13b is a cross-sectional view taken along line C-C of FIG. 13 a;

FIG. 13C is another cross-sectional view taken along line C-C of FIG. 13 a;

fig. 14a is a partial schematic structural view of a foldable display terminal according to some embodiments of the present application;

FIG. 14b is a schematic diagram illustrating a partial structure of another foldable display terminal according to some embodiments of the present application;

fig. 15 is a schematic view of another flexible support strip to rigid support strip connection configuration according to some embodiments of the present application.

Reference numerals:

01-folding display terminal; 10-a flexible screen; 101-a first non-inflection zone; 102-a second non-inflection zone; 103-a bending zone; 110-a display screen body; 111-a cover plate; 20-a folding assembly; 201-a first housing; 211 — a first recess; 202-a second housing; 212-a second groove; 203-a rotating shaft; 213-a first rotating shaft; 223-a second axis of rotation; 204-a first blade; 214-a second blade; 224-a threaded hole; 30-bending a support member; 301-a flexible tie layer; 302-rigid support bars; 312-a first retaining wall; 40-flexible support bars; 401-a second retaining wall; 50-connecting hole; 501-a first sub-aperture; 502-a second sub-aperture; 51-a connecting column; 511-a first sub-column; 512-second sub-column.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments.

In the following, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

Further, in the present application, directional terms such as "upper" and "lower" are defined with respect to a schematically-disposed orientation of components in the drawings, and it is to be understood that these directional terms are relative concepts that are used for descriptive and clarity purposes and that will vary accordingly with respect to the orientation in which the components are disposed in the drawings.

The embodiment of the application provides a folding display terminal, which can be a product with a display interface, such as a mobile phone, a display, a tablet computer, a vehicle-mounted computer and the like. The embodiment of the present application does not specially limit the specific form of the folding display terminal.

As shown in fig. 1, a flexible screen 10 included in a display terminal 01 is folded. The flexible screen 10 is an Active Matrix Organic Light Emitting Diode (AMOLED) display screen.

The AMOLED display screen is a self-luminous display screen, and a Back Light Module (BLM) is not required. Therefore, when the substrate in the AMOLED display screen is made of a flexible resin material, such as polyethylene terephthalate (PET), the AMOLED display screen can have a bendable characteristic.

In addition, as shown in fig. 1, the folding display terminal 01 further includes a folding assembly 20 for carrying the flexible screen 10.

The folding assembly 20 includes a first housing 201, a second housing 202, and a hinge 203 between the first housing 201 and the second housing 202.

As shown in fig. 2a, the rotating shaft 203 is connected to the first casing 201 and the second casing 202. The first housing 201 and the second housing 202 are located on both sides of the rotating shaft 203, i.e. the first housing 201 is located on the left side of the axis O-O of the rotating shaft 203, and the second housing 202 is located on the right side of the axis O-O of the rotating shaft 203.

The first housing 201 and the second housing 202 are rotatable about the axis O-O of the rotary shaft 203, respectively.

In order to make the first housing 201 and the second housing 202 rotatably connected by the rotating shaft 203, the folding assembly 20 further comprises a first blade 204 and a second blade 214 as shown in fig. 2 a.

One end of the first blade 204 is connected to the rotating shaft 203, and the other end, as shown in fig. 2b, can extend into the mounting groove below the first casing 201 and is connected to the first casing 201 through a screw installed in the threaded hole 224.

Similarly, one end of the second blade 214 is connected to the rotating shaft 203, and the other end of the second blade can extend into the mounting groove below the second casing 202 and is connected to the second casing 202 through a screw installed in the threaded hole 224.

Based on this, in some embodiments of the present application, the structure of the rotating shaft 203 may include a first rotating shaft 213 and a second rotating shaft 223 coaxially disposed as shown in fig. 2 b. At this time, the axes of the first and second rotating shafts 213 and 223 are set as the axis O-O of the rotating shaft 203 shown in fig. 2 a.

The first rotating shaft 213 is connected to the first blade 204, and the second rotating shaft 223 is connected to the second blade 214.

As shown in fig. 2b, the first and second rotating shafts 213 and 223 rotate in opposite directions. The first rotating shaft 213 drives the first housing 201 to rotate around the axis of the first rotating shaft 213 through the first blade 204. The second rotating shaft 223 drives the second housing 202 to rotate around the axis of the second rotating shaft 223 through the second blade 214.

The axes of the first rotating shaft 213 and the second rotating shaft 223 can be used as the axis O-O of the rotating shaft 203 shown in fig. 2a, so that the first housing 201 and the second housing 202 can rotate along the axis O-O of the rotating shaft 203 respectively.

It should be noted that the above is an example of the structure of the rotating shaft 203, and the rotating shaft 203 of other structures is not described in detail herein. The present application does not limit the structure of the rotating shaft 203, as long as the first housing 201 and the second housing 202 can be rotatably connected through the rotating shaft 203.

On this basis, as shown in fig. 3a or fig. 3b, a part of the flexible screen 10 is fixed on the first casing 201 by a glue layer (black coating part in fig. 3 a), a part is fixed on the second casing 202 by a glue layer, and the rest of the flexible screen 10 is located between the first casing 201 and the second casing 202.

It should be noted that, in the present application, the glue layer for bonding the two components may be a film layer formed after the glue of the drawings.

The first housing 201 and the second housing 202 are used for carrying the flexible screen 10, ensuring the flatness of the flexible screen 10, and protecting the non-display surface of the flexible screen 10. In addition, other electronic components, such as a camera, a headset, an earphone, a button, a battery, and the like, are disposed on the first housing 201 and the second housing 202.

The first housing 201 and the second housing 202 rotate along the axis O-O (as shown in fig. 2 a) of the rotation shaft 203, and as shown in fig. 3a, when the included angle α between the first housing 201 and the second housing 202 is less than 180 °, the flexible screen 10 is in a folded state.

Alternatively, as shown in fig. 3b, when the included angle α between the first housing 201 and the second housing 202 increases to 180 °, the flexible screen 10 is in the unfolded state.

Under the condition that the first casing 201 and the second casing 202 do not have the bending characteristic, the area of the flexible screen 10 connected with the first casing 201 through the glue layer cannot be bent, and the partial area is the first non-bending area 101 shown in fig. 4.

The area of the flexible screen 10 connected to the second casing 202 by the adhesive layer cannot be bent under the load of the second casing 202, and this area is the second non-bending area 102 shown in fig. 4.

In addition, in the flexible screen 10, a portion between the first non-bending region 101 and the second non-bending region 102 is a bending region 103 that enables the folding display terminal 01 to realize a bending characteristic.

On the basis, in order to support the bending region 103 of the flexible screen 10, the bending performance of the bending region 103 of the flexible screen 10 can be ensured to meet the requirement while the rigidity and the impact resistance of the bending region 103 are improved. As shown in fig. 5, the folding assembly 20 further includes a bending support 30.

The bending support 30 is located on the side of the rotation axis 203 facing the flexible screen 10. The bending support 30 is further connected to the first housing 201 and the second housing 202.

Illustratively, as shown in fig. 5, a first groove 211 is provided on a surface of the first housing 201 facing the flexible screen 10. One end of the bending support 30 close to the first housing 201 may be adhered to the first groove 211 by a glue layer.

The side of the second housing 202 facing the flexible screen 10 has a second recess 212. One end of the bending support 30 near the second housing 202 may be adhered to the second groove 212 by a glue layer.

Further, the bending support 30 is connected to the rotation shaft 203 at an intermediate region except for a portion connected to the first case 201 and the second case 202.

It should be noted that the present application is not limited to the connection manner of the bending support 30 and the rotating shaft 203.

As can be seen from the above description, on one hand, the bending support 30 needs to support the bending region 103, so that the bending region 103 of the flexible screen 10 has good impact resistance during the bending process of the foldable display terminal 01, and the probability of damage to the flexible screen 10 in the bending region 103 is reduced.

On the other hand, the bending support 30 also needs to have good flexibility to ensure that the maximum bending angle of the bending region 103 of the flexible screen 10 can be reached. For example, as shown in fig. 6, the bending region 103 of the flexible screen 10 and the bending support 30 can ensure that the back surface (the surface on the side facing away from the flexible screen 10) of the first housing 201 is in contact with the back surface of the second housing 202 when the bending region and the bending support are at the maximum bending angle.

To meet the above requirements, in some embodiments of the present application, as shown in fig. 7a or 7c, buckling support 30 comprises a flexible connecting layer 301 and a plurality of rigid support strips 302. The rigid support bar 302 is disposed along the axis O-O of the rotating shaft 203. In addition, a plurality of rigid support bars 302 are spaced apart and arranged side-by-side. In this case, when one end of the bending support 30 is connected to the first housing 201 and the other end is connected to the second housing 202, the plurality of rigid support bars 302 in the bending support 30 are disposed in parallel between the first housing 201 and the second housing 202.

Wherein the rigidity of the material constituting the rigid support strip 302 is greater than the rigidity of the material constituting the flexible connection layer 301.

For example, the material of the rigid support bar 302 may be a metal material such as stainless steel or aluminum alloy, or may be a rigid plastic such as polyvinyl chloride (PVC).

The material constituting the flexible connection layer 301 may be a silicone material having high flexibility. In this way, the flexible material layer 301 may provide the bending support 30 with a certain flexibility, thereby ensuring that the maximum bending angle of the bending region 103 of the flexible screen 10 can be reached.

In addition, the rigid support strip 302 can provide stronger rigidity for the bending support 30, so that the bending support 30 has good support performance, and the impact resistance of the bending area 103 of the flexible screen 10 in the bending process of the foldable display terminal 01 is improved.

Hereinafter, the way of disposing the rigid support strip 302 and the flexible connecting layer 301 in the bending support 30 will be described as an example.

For example, in some embodiments of the present application, as shown in FIG. 7a, a plurality of rigid support strips 302 are located on a surface of flexible connecting layer 301. As shown in fig. 7b, a bottom view taken along direction a in fig. 7a shows that a plurality of rigid support bars 302 are arranged at intervals, and each of the rigid support bars 302 is connected to the flexible connecting layer 301.

Alternatively, and for example, in other embodiments of the present application, as shown in FIG. 7c, flexible connecting layer 301 encases a plurality of rigid support strips 302. In this case, each rigid support strip 302 is peripherally covered by a flexible connecting layer 301.

In this case, for the bending support 30 of any one of the above structures, as shown in fig. 7d, the flexible connection layer 301 in the bending support 30 may be disposed close to the flexible screen 10. And, the flexible connection layer 301 is connected to the bending region 103 of the flexible screen 10 through a glue layer on a surface (i.e. an upper surface) of the flexible connection layer 301 facing the flexible screen 10.

Thus, the surface of the flexible connection layer 301 is flat, so that after the flexible connection layer is bonded to the flexible screen 10, the contact area between the bending support member 30 and the flexible screen 10 can be increased, the surface of the bending region 103 of the flexible screen 10 has good flatness, and the probability of the flexible screen 10 being degummed is reduced. In the process of bending the flexible screen 10, the phenomenon that the bending area 103 is arched due to degumming can be effectively avoided.

As can be seen from the above, the material constituting the flexible connection layer 301 may be a silicone material. The silicone material has good flexibility, so that the maximum bending angle of the bending area 103 of the flexible screen 10 can reach the requirement.

However, when the flexible connection layer 301 made of silica gel is connected to the bending region 103 of the flexible screen 10 through the adhesive layer, the adhesive property between the silica gel and the adhesive layer is weak, so that after the foldable display terminal 01 is bent for multiple times, the position of the bending region 103 of the flexible screen 10 is degummed, and the flexible screen 10 is arched.

To solve the above problem, the folding assembly 20 provided by the embodiment of the present application, as shown in fig. 8a, further includes at least one flexible supporting strip 40. As shown in fig. 8B (enlarged view of B in fig. 8 a), the flexible support strip 40 is crossed and connected with a plurality of rigid support strips 302.

In some embodiments of the present application, the flexible support bar 40 may be disposed perpendicular to the plurality of rigid support bars 302.

In addition, the flexible supporting strip 40 is connected to the bending region 103 of the flexible screen 10 through an adhesive layer on a surface of the flexible supporting strip 40 facing the flexible screen 10.

In this case, the bending region 103 of the flexible screen 10 is connected not only to the flexible connection layer 301 of the bending support 30 by means of an adhesive layer, but also to the flexible support strip 40 by means of the above-mentioned adhesive layer. In addition, since the flexible supporting bar 40 is disposed to intersect with and connected to the plurality of rigid supporting bars 302, the flexible supporting bar 40 can be connected to the entire bending supporting member 30.

In this way, the portion of the bending region 103 of the flexible screen 10 connected to the flexible supporting strip 40 is connected to the bending supporter 30 through the flexible supporting strip 40.

On the basis, the adhesive property of the flexible supporting strip 40 and the adhesive layer positioned on the surface, facing the flexible screen 10, of the flexible supporting strip 40 is greater than that of the flexible connecting layer 301 and the adhesive layer positioned on the surface, facing the flexible screen 10, of the flexible connecting layer 301. Illustratively, the material constituting the flexible connection layer 301 is the above-described silicone rubber. The material of the flexible support strip 40 may be a bendable plastic material, such as Thermoplastic Polyurethane (TPU), thermoplastic elastomer (TPE), or rubber.

In this way, the flexible supporting strip 40 can enhance the connectivity between the bending region 103 of the flexible screen 10 and the bending support 30, so that the connection between the flexible screen 10 and the bending support 30 is more secure. In addition, the bending support 30 is connected to the rotation shaft 203. Therefore, the bending region 103 of the flexible screen 10 can be firmly connected to the folding assembly 20, so that the probability of degumming of the flexible screen 10 in the bending region 103 is reduced, and the phenomenon of arching of the flexible screen 10 is avoided.

In addition, the flexible support bars 40 are crossed and connected with the plurality of rigid support bars 302. In some embodiments of the present application, as shown in FIG. 8b, a plurality of rigid support strips 302 extend beyond at least one end of flexible connecting layer 301.

In this case, as shown in fig. 9a, the flexible supporting bar 40 may be disposed at one end of the flexible connection layer 301, i.e., at one side of one end surface of the flexible connection layer 301 perpendicular to the axis O-O of the rotation shaft 203, and the flexible supporting bar 40 is connected to a plurality of rigid supporting bars 302 extending out of the flexible connection layer 301.

Alternatively, in other embodiments of the present application, as shown in fig. 9b, the folding assembly 20 has two flexible supporting strips 40 respectively disposed on two sides of two end surfaces of the flexible connecting layer 301 perpendicular to the axis O-O of the rotating shaft 203. The two flexible supporting strips 40 are respectively connected with the plurality of rigid supporting strips 302 extending out of the flexible connecting layer 301 at two ends of the flexible connecting layer 301.

As can be seen from the above, the flexible screen 10 may be connected to the flexible connection layer 301 of the bending support member 30 and the flexible support strip 40 at least one end of the flexible connection layer 301 through an adhesive layer.

The following describes a connection manner of the flexible panel 10, the flexible connection layer 301, and the flexible support bars 40 with respect to a specific structure of the flexible panel 10.

In some embodiments of the present application, the flexible screen 10, as shown in fig. 10, includes a display screen body 110 and a cover 111. The display screen body 110 has a bendable characteristic and is used for displaying an image.

The cover plate 111 also has a bendable characteristic, and is adhered to the display surface of the display screen body 110 through a glue layer to protect the display screen body 110.

In addition, when the foldable display terminal 01 has a touch function, the foldable display terminal 01 further includes a touch electrode, and the touch electrode may be disposed on a surface of the cover plate 111 facing the display screen body 110.

As shown in fig. 10, the area of the cover 111 is generally larger than the area of the display surface of the display body 110, so that after the cover 111 covers the display surface of the display body 110, an excessive portion of the cover extends out of the periphery of the display body 110.

In this case, as shown in fig. 11, two ends of the flexible connecting layer 301 are respectively provided with one flexible supporting strip 40. The display screen body 110 can be connected with the flexible connection layer 301 in the bending support member 30 through a glue layer (black coating position). The part of the cover plate 111 extending out of the display screen body 110 is connected with the flexible supporting strips 40 through the above-mentioned glue layer.

Based on this, when the material of the flexible connection layer 301 is silica gel and the material of the flexible support strip 40 is the above-mentioned bent plastic material, the adhesion between the flexible connection layer 301 and the glue layer is smaller than that between the flexible support strip 40 and the glue layer. In addition, the flexibility of the flexible connecting layer 301 is greater than the flexibility of the flexible support strip 40.

In this case, as shown in fig. 11, when the cover plate 111 extends out of the display screen body 110 and is connected to the flexible support bar 40 through the adhesive layer, the adhesive strength between the flexible support bar 40 and the flexible screen 10 can be improved by using the higher adhesive property between the flexible support bar 40 and the adhesive layer, so as to reduce the probability of the adhesive failure of the flexible screen 10.

In addition, when the display screen body 110 is connected with the flexible connecting layer 301 through the adhesive layer, the flexibility of the flexible connecting layer 301 can be utilized, which is beneficial to ensuring that the maximum bending angle of the flexible screen 10 can reach the requirement.

Further, in other embodiments of the present application, as shown in fig. 12, the shielding assembly 20 may include a plurality of, for example, two bending supporters 30 disposed along the axial direction O-O of the rotation shaft 203. In this case, at least one end of the flexible connection layer 301 of each bending support member 30 is provided with one flexible support strip 40 connected to a plurality of rigid support strips 302 extending out of the flexible connection layer 301.

As can be seen from the above, the flexible supporting strip 40 is connected to the flexible screen 10 through the glue layer, and in addition, the flexible supporting strip 40 is also connected to the rigid supporting strip 302 extending out of the flexible connecting layer 301 in the bending supporting member 30, so as to achieve the purpose of improving the connection strength between the flexible screen 10 and the bending supporting member 30. The manner in which the flexible support bar 40 is connected to the rigid support bar 302 is illustrated in detail by way of specific examples below.

Example 1

In this example, as shown in fig. 13a, the folding assembly 20 further comprises a plurality of connecting posts 51. The flexible support bar 40 is connected to the rigid support bar 302 by connecting posts 51.

Specifically, as shown in fig. 13a, the rigid support bar 302 is provided with a connection hole 50 at a portion extending out of the flexible connection layer 301. During the manufacturing process, the connecting holes 50 can be formed on the rigid supporting bar 302 by a mechanical drilling process.

In addition, as shown in fig. 13a, the plurality of connecting posts 51 are connected to the flexible supporting bar 40. In some embodiments of the present application, the connecting column 51 is made of the same material as the flexible supporting bar 40 and is a unitary structure. In this case, the flexible supporting bars 40 and the plurality of connecting posts 51 can be simultaneously manufactured by the same injection molding process.

Based on this, when the plurality of connecting posts 51 of the flexible supporting bar 40 are connected with the plurality of rigid supporting bars 302, the cross-sectional view is obtained by cutting along the dotted line shown in fig. 13a, as shown in fig. 13b, and each connecting post 51 of the plurality of connecting posts 51 is snapped into one connecting hole 50.

In addition, in order to increase the tightness of the connection column 51 and the connection hole 50, the connection strength between the flexible support bar 40 and the rigid support bar 302 is increased. As shown in fig. 13b, the connection hole 50 is a stepped hole, that is, the connection hole 50 includes a first sub-hole 501 and a second sub-hole 502 which have different diameters and are communicated with each other.

Among the stepped holes, the first sub-hole 501 with a small aperture faces the flexible supporting strip 40; of the stepped holes, a second sub-hole 502 having a larger diameter is disposed toward the rotation shaft 203, i.e., away from the flexible support bar 40.

In addition, the connecting column 51 is a stepped column, that is, the connecting column 51 includes a first sub-column 511 and a second sub-column 512 which have different axial diameters and are connected with each other.

In the stair column, a first sub-column 511 with a small shaft diameter is matched with the first sub-hole 501; the second sub-column 512 with a larger axial diameter in the stepped column is matched with the second sub-hole 502.

In this case, when the connection column 51 and the flexible support bar 40 are made of the same material and have an integral structure, one connection column 51 may be inserted through one connection hole 50 and the connection column 51 may be stretched through a glue pulling process.

In the stretched connecting rod 51, the interface between the first sub-column 511 and the second sub-column 512 is in contact with the interface between the first sub-hole 501 and the second sub-hole 502 in the connecting hole 50. Then, the part of the second sub-column 512 extending out of the second sub-hole 502 is cut off, so that the second sub-column 512 with a larger diameter is located in the second sub-hole 502 and is clamped at the interface of the first sub-hole 501 and the second sub-hole 502. Since the diameter of the second sub-column 512 is larger than the diameter of the first sub-hole 501, the connecting column 51 can be separated from the connecting hole 50 by external force.

In other embodiments of the present application, when the connecting column 51 of the flexible supporting bar 40 can be connected with the connecting hole 50 by interference fit, as shown in fig. 13c, the diameter of the connecting column 51 is equal everywhere, and the diameter of the connecting hole 50 is also equal everywhere.

Furthermore, as can be seen from the above, in order to connect the flexible support strip 40 with the rigid support strip 302 in the bending support 30, the rigid support strip 302 may be extended out of at least one end of the flexible connection layer 301. In this case, in order to shield the portion of the rigid supporting bar 302 extending out of the flexible connecting layer 301 to improve the appearance of the foldable display terminal 01, the folding assembly 20 further includes a plurality of first retaining walls 312 as shown in fig. 13 a.

A first retaining wall 312 is connected to the end surface (surface perpendicular to the axis O-O of the rotating shaft 203) of a portion of the rigid support bar 302 extending beyond the flexible connecting layer 301.

The first retaining wall 312 is higher than the surface of the rigid support bar 302 facing the flexible support bar 40.

For convenience of manufacture, the first retaining wall 312 may be made of the same material as the rigid supporting bar 302 and is of an integral structure. In this case, the first retaining wall 312 and the rigid supporting bar 302 can be prepared completely at the same time by one-time injection molding process.

In this case, after the flexible supporting bar 40 is connected to the plurality of rigid supporting bars 302 extending out of the flexible connecting layer 301, as shown in fig. 14a, the flexible supporting bar 40 is located between the first retaining wall 312 and the flexible connecting layer 302. In this way, whether the foldable display terminal 01 is in the unfolded state as shown in fig. 14a or in the folded state as shown in fig. 14b, the first retaining wall 312 can block various parts inside the first retaining wall 312, so as to achieve the purpose of providing the appearance effect of the foldable display terminal 01.

In addition, after the flexible supporting bar 40 is connected to the plurality of rigid supporting bars 302 in the above manner, glue is applied to the surface of the flexible supporting bar 40 facing the flexible screen 10 to form a glue layer for connecting the flexible supporting bar 40 and the flexible screen 10. Since the glue has fluidity, the folding assembly 20 further includes a second blocking wall 401 as shown in fig. 13a in order that the glue flows into other positions, resulting in an insufficient amount of glue on the surface where the flexible supporting bars 40 are adhered to the flexible screen 10.

A second wall 401 is connected to a surface of one of the flexible support bars 40 facing away from the flexible connecting layer 301. Further, the second blocking wall 401 is higher than the surface of the flexible supporting bar 40 facing the flexible screen 10. In this way, the second retaining wall 401 can block the glue applied to the surface of the flexible supporting bar 40 facing the flexible screen 10, so as to prevent the glue from flowing outwards.

The folding assembly 20 having the structure shown in fig. 14a has the same technical effects as the folding assembly 20 provided in the previous embodiment and the folding display terminal 01, and will not be described herein again.

Example two

In this example, as shown in fig. 15, the portion of the rigid support bar 302 extending out of the flexible connection layer 301 is embedded in the flexible support bar 40 and is integrated with the flexible support bar 40.

In this case, since the flexible connection layer 301 is made of a different material from the flexible support bar 40, the preparation of the structure shown in fig. 15 may be formed through a two-shot molding process.

For example, in some embodiments of the present application, a first injection molding process is performed to form the plurality of rigid supporting bars 302 and the flexible connecting layer 301 into a unitary structure, so as to complete the preparation of the bending supporting member 30.

Next, a second injection molding process is performed to form the prepared bending supporter 30 and the flexible supporting bar 40 into an integral structure, thereby completing the structure shown in fig. 15.

Alternatively, in other embodiments of the present application, the plurality of rigid support bars 302 are formed as a unitary structure with the flexible support bar 40 during the first injection molding process.

Next, a second injection molding process is performed to form the plurality of rigid supporting bars 302 and the flexible connecting layer 301 into an integral structure in the structure prepared by the first injection molding process, thereby completing the preparation of the structure shown in fig. 15.

The folding assembly 20 having the structure shown in fig. 15 has the same technical effects as the folding assembly 20 provided in the foregoing embodiment and the folding display terminal 01, and will not be described again.

The above description is only an embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions within the technical scope of the present disclosure should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (13)

1. A folding assembly for carrying a flexible screen; the folding assembly comprises:

a rotating shaft;

a first housing and a second housing; the first shell and the second shell are rotationally connected through the rotating shaft;

the bending supporting piece is positioned on one side of the rotating shaft, which faces the flexible screen, and is connected with the rotating shaft, the first shell and the second shell;

the bending support piece comprises a flexible connecting layer and a plurality of rigid supporting strips; the rigid support bars are arranged along the axis direction of the rotating shaft, and the plurality of rigid support bars are arranged at intervals in parallel; the rigid support bar is connected with the flexible connecting layer; the flexible connecting layer is connected with the bending area of the flexible screen through an adhesive layer positioned on the surface, facing the flexible screen, of the flexible connecting layer;

flexible support bar, with many rigid support bar cross arrangement just is connected, and through being located flexible support bar orientation flexible screen glue film on the surface, with the district of buckling of flexible screen is connected.

2. The folding assembly of claim 1 wherein a plurality of said rigid support strips extend beyond at least one end of said flexible connecting layer; one flexible supporting strip is connected with a plurality of rigid supporting strips extending out of the flexible connecting layer.

3. The folding assembly of claim 2 wherein said rigid support strip has attachment holes formed in portions thereof extending beyond said flexible attachment layer;

the folding assembly further comprises a plurality of connecting posts connected with the flexible support strip; one of the connection posts is snapped into one of the connection holes.

4. A folding assembly as claimed in claim 3,

the connecting hole is a stepped hole;

the first sub-hole with the small aperture in the stepped hole faces the flexible supporting strip, and the second sub-hole with the large aperture in the stepped hole faces the rotating shaft;

the connecting column is a stepped column;

the first sub-column with the small shaft diameter in the stepped column is matched with the first sub-hole, and the second sub-column with the large shaft diameter in the stepped column is matched with the second sub-hole.

5. The folding assembly of claim 3 or 4 further comprising a plurality of first retaining walls;

the first retaining wall is connected with the end face of the part, extending out of the flexible connecting layer, of the rigid supporting bar;

the first retaining wall is higher than the surface of the rigid supporting bar facing the flexible supporting bar;

the flexible supporting bar is located between the first retaining wall and the flexible connecting layer.

6. The folding assembly of claim 2 wherein said rigid support strip has portions thereof extending beyond said flexible connecting layer embedded within and integral with said flexible support strip.

7. The folding assembly of claim 2 further including at least one second wall;

the second retaining wall is connected with the surface, deviating from the flexible connecting layer, of the flexible supporting strip;

the second retaining wall is higher than the surface of the flexible supporting strip facing the flexible screen.

8. A folding assembly as claimed in claim 1, wherein said flexible connecting layer is disposed adjacent said flexible screen in said bending support.

9. The folding assembly of claim 1 wherein the flexible support strip has a greater adhesion to the glue layer on the surface of the flexible support strip facing the flexible screen than to the glue layer on the surface of the flexible attachment layer facing the flexible screen.

10. The folding assembly of claim 9,

the material for forming the flexible connecting layer comprises silica gel;

the material forming the flexible support strip comprises a plastic material.

11. The folding assembly of claim 1,

one side surface of the first shell facing the flexible screen is provided with a first groove, and one end of the bending support piece close to the first shell is bonded in the first groove;

one side surface of the second shell facing the flexible screen is provided with a second groove, and one end of the bending supporting piece close to the second shell is bonded in the second groove.

12. A folding display terminal, comprising a flexible screen, and a folding assembly according to any one of claims 1-11;

the first non-bending area of the flexible screen is connected with a first shell in the folding assembly;

the second non-bending area of the flexible screen is connected with a second shell in the folding assembly;

the bending area of the flexible screen is connected with a bending support piece in the folding assembly;

wherein the bending region is located between the first non-bending region and the second non-bending region.

13. The foldable display terminal of claim 12, wherein the bending support comprises a flexible connection layer, and a plurality of the rigid support bars connected to the flexible connection layer; one flexible supporting strip in the folding assembly is connected with a plurality of rigid supporting strips extending out of the flexible connecting layer;

the flexible screen comprises a display screen body and a cover plate; the cover plate covers the display surface of the display screen body and extends out of the periphery of the display screen body;

the display screen body is connected with the bending support piece; the part of the cover plate extending out of the display screen body is connected with the flexible supporting bars.

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