WO2020168951A1

WO2020168951A1 - Flexible display screen and terminal comprising display screen

Info

Publication number: WO2020168951A1
Application number: PCT/CN2020/074823
Authority: WO
Inventors: 饶兴堂; 王昌勇; 王荣; 李夏; 臧浩春
Original assignee: 华为技术有限公司
Priority date: 2019-02-20
Filing date: 2020-02-12
Publication date: 2020-08-27
Also published as: CN110277022A

Abstract

A flexible display screen and a terminal comprising the display screen. The flexible display screen comprises: a display layer (410) and a support layer (420); the support layer (420) is located on a back face of the display layer (410) so as to increase the rigidity of the display screen; the support layer (420) comprises at least one bending area (4201) and at least one non-bending area (4202); and the bending area (4201) may bend or warp relative to the non-bending area (4202) so that the support layer (420) bends or warps.

Description

Flexible display screen and terminal containing the display screen

This application requires the priority of a Chinese patent application filed with the State Intellectual Property Office of China, the application number is 201910125139.1, and the invention title is "a support plate for a flexible display module" on February 20, 2019, in May 2019 The priority of the Chinese patent application filed with the State Intellectual Property Office of China with application number 201910420639.8 and the title of the invention is "a flexible display screen and a terminal containing the display screen" on the 20th, the entire content of which is incorporated into this application by reference.

Technical field

This application relates to the technical field of display screens, in particular to a flexible display screen and a terminal containing the display screen.

Background technique

Flexible display screens have the advantages of being light and thin, not fragile, foldable and rollable. Therefore, in recent years, flexible display screens have been widely used in terminal products such as mobile phones. However, the existing flexible display screens are rarely used in foldable and rollable end products. Generally, in order to meet the foldable or rollable application of the flexible display screen, the outermost protective cover and the internal functional film layer need to use flexible materials such as resin/plastic. This kind of material has poor rigidity, and after bending and flattening operations, creep elongation or plastic deformation will occur, which will cause the flexible display screen to wrinkle, arch or crease, which seriously affects the user's visual experience.

Summary of the invention

The embodiments of the present application provide a flexible display screen and a terminal containing the display screen, which can not only increase the rigidity of the display screen, but also avoid wrinkles, arches or creases caused by repeated folding or curling of the flexible display screen.

In the first aspect, an embodiment of the present application provides a flexible display screen, including:

Display layer

The supporting layer is located on the back of the display layer to increase the rigidity of the display;

The supporting layer includes at least one bending zone and at least one non-bending zone; the bending zone can be bent or bent relative to the non-bending zone, so that the supporting layer can be bent or bent.

With reference to the first aspect, in a first possible implementation manner of the first aspect, the thickness of the bending area is not greater than the thickness of the non-bending area.

In this implementation, the bending area is easier to bend relative to the non-bending area, which improves the feel of the user's operation.

In combination with the first possible implementation of the first aspect, in the second possible implementation of the first aspect, in the non-bending state of the support layer, the upper surface of the non-bending area and the bending The upper surface of the folding area is on the same plane, and the lower surface of the bending area is recessed inward relative to the non-bending area; wherein, the upper surface refers to the side facing the display layer, and the lower surface refers to the side facing away from the display layer 10.

In this implementation, the flatness of the flexible display screen can be further ensured.

With reference to the first possible implementation manner of the first aspect, in a third possible implementation manner of the first aspect, the thickness of the bending zone is less than 0.2 mm.

In this implementation manner, the bending area has good bending ability, which improves the user's operation feel.

With reference to the first possible implementation manner of the first aspect, in the fourth possible implementation manner of the first aspect, the thickness of the non-bending area is 0.02-0.5 mm.

In this implementation, the non-bending area improves the rigidity of the display screen, and can protect the display layer during the process of repeated folding or curling of the flexible display screen, so that it does not wrinkle, arch or fold due to repeated folding or curling. This ensures the flatness of the flexible display screen.

With reference to the first aspect, in a fifth possible implementation manner of the first aspect, the support layer is a metal plate.

In this implementation, the support layer has good rigidity and bending resistance, improves the rigidity of the display screen, and ensures the flatness of the flexible display screen.

With reference to the first aspect, in a sixth possible implementation manner of the first aspect, when the at least one bending zone includes one bending zone, the bending zone is located at the center of the support layer.

In this implementation, the bending area is located in the center, which is easy to design and process; and it can better protect the display layer.

With reference to the first aspect, in a seventh possible implementation manner of the first aspect, the at least one bending area includes multiple bending areas, and the at least one non-bending area includes multiple non-bending areas; and There is at least one bending area between adjacent non-bending areas.

In this implementation manner, there are multiple bending areas, which can realize the curling of the display screen and improve the user experience.

With reference to the first aspect, in an eighth possible implementation manner of the first aspect, the support layer is adhered to the back of the display layer through an adhesive layer.

In this implementation manner, the support layer and the display layer are bonded through the adhesive layer, so that the display screen is easy to design and assemble.

In this implementation, when the flexible display screen is folded or rolled, the fluid layer can reduce the stretching or stretching of the cover plate and the functional film layer on the display screen by the folding or curling, thereby further avoiding wrinkles caused by the folding or curling of the display screen. , Arches or creases.

With reference to the first aspect, in a ninth possible implementation manner of the first aspect, the support layer includes a first support plate and at least one second support plate, and the second support plate can be bent; wherein the bending The folding area and the non-bending area are areas of the first supporting plate; the at least one second supporting plate is located between the display layer and the first supporting plate.

In this implementation, the strength and rigidity of the display screen are further increased, and the flatness of the flexible display screen is further ensured.

With reference to the ninth possible implementation manner of the first aspect, in the tenth possible implementation manner of the first aspect, one side of the at least one second support plate is bonded to the back of the display layer through an adhesive layer; The first support plate is adhered to the other surface of the at least one second support plate through an adhesive layer.

In this implementation manner, the second support plate and the display layer are bonded through the adhesive layer, so that the display screen is easy to design and assemble.

With reference to the ninth possible implementation manner of the first aspect, in an eleventh possible implementation manner of the first aspect, the at least one second support plate includes multiple second support plates, and the multiple second support plates They are bonded sequentially through an adhesive layer.

In this implementation manner, the multiple second support plates are bonded through the adhesive layer, so that the display screen is easy to design and assemble.

With reference to the ninth possible implementation manner of the first aspect, in a twelfth possible implementation manner of the first aspect, the thickness of the second support plate is 0-0.2 mm.

In this implementation, the thickness of the second support plate is between 0-0.2mm. In the case of avoiding excessive increase in the thickness of the display, the strength and rigidity of the display are increased, and the flatness of the flexible display is further ensured .

With reference to the ninth possible implementation manner of the first aspect, in a thirteenth possible implementation manner of the first aspect, the first support plate is a first metal plate; the second support plate is a second metal plate or Organic composite plate; wherein, the second metal plate includes an amorphous metal plate.

In this implementation manner, the first supporting plate and the second supporting plate have good rigidity and bending resistance, which improves the rigidity of the display screen and ensures the flatness of the flexible display screen.

With reference to the first aspect, in a fourteenth possible implementation manner of the first aspect, in the non-bending state of the support layer, the display screen is a flat display screen.

In this implementation, the flat display screen can be made to have strong rigidity, and when the display screen is folded or rolled, it can be bent in a certain arc, avoiding wrinkles, arches or creases caused by folding or curling, and improves The user’s visual experience.

With reference to the first aspect, in a fifteenth possible implementation manner of the first aspect, in the non-bending state of the support layer, the display screen is a curved display screen.

In this implementation manner, the curved display screen can be made to have strong rigidity, and when the display screen is folded or rolled, it can be bent in a certain arc, avoiding wrinkles, arches or creases caused by folding or curling, and improves The user’s visual experience.

With reference to the first aspect, in a sixteenth possible implementation of the first aspect, the display layer includes a display panel and a back film; wherein the support layer is located on the back of the back film.

In this implementation, the support layer is located on the back of the back film of the display layer, which is easy to design and assemble.

With reference to the first aspect, in a seventeenth possible implementation manner of the first aspect, a fixing member is provided on the side of the non-bending area away from the display layer; the fixing member is used to fix the display screen to the terminal .

In this implementation manner, the display screen can be fixed to the terminal by the fixing member, which can improve the tightness of the connection between the display screen and the terminal.

With reference to the seventeenth possible implementation manner of the first aspect, in the eighteenth possible implementation manner of the first aspect, the fixing member includes any one of the following:

Threaded holes, buckles, slots, nuts.

In this implementation manner, the display screen can be fixed to the terminal through a threaded hole or a buckle or a slot or a nut, which can further improve the tightness of the connection between the display screen and the terminal.

In a second aspect, a terminal is provided, including the display screen described in the first aspect.

The flexible display screen provided by the embodiments of the present application has strong rigidity, and can be bent in a certain arc when the display screen is folded or rolled, which avoids wrinkles, arches or creases caused by folding or curling, and improves users’ Visual experience.

Description of the drawings

FIG. 1 is a schematic structural diagram of a terminal provided in an embodiment of the application in a use state;

FIG. 2 is a schematic structural diagram of the terminal shown in FIG. 1 in another use state;

Fig. 3 is a schematic structural diagram of the terminal shown in Fig. 1 from another perspective;

4 is a schematic cross-sectional view of an embodiment of the terminal shown in FIG. 3 at the line A-A;

Fig. 5 is a schematic structural diagram of a flexible display screen provided by an embodiment of the present application;

FIG. 6 is a schematic structural diagram of a flexible display screen provided in an embodiment of the application in a folded state;

FIG. 7 is a schematic structural diagram of a flexible display screen provided by an embodiment of the application in another folded state;

FIG. 8 is a schematic diagram of the structure of a support layer of a flexible display screen provided by an embodiment of the application;

FIG. 9 is a schematic structural diagram of a flexible display screen provided by an embodiment of the application;

10 is a schematic structural diagram of a flexible display screen provided by an embodiment of the application;

FIG. 11 is a schematic structural diagram of a flexible display screen provided by an embodiment of the application;

FIG. 12 is a schematic structural diagram of a flexible display screen provided by an embodiment of the application;

FIG. 13 is a schematic block diagram of a terminal provided by an embodiment of this application.

In the figure: 100. Terminal; 10. First part; 11. Receiving space; 111. First bottom wall; 12. First structure; 13. Second structure; 131. Second bottom wall; 132. First Side wall; 133. Second side wall; 14. Circuit board assembly; 140. Components; 15. Rear cover decoration; 16. Battery; 17. Camera; 20. Second part; 21. Folding mechanism; 30. Section Three parts; 40. Display screen; 41. First screen area; 42. Second screen area; 43. Third screen area; 410. Display layer; 4101. Cover plate; 4102. Optical adhesive layer; 4103. POL layer; 4104. Display panel; 4105. Back film; 4106. Touch panel; 420. Support layer; 4201. Non-bending area; 42011. Nut; 4202. Bending area; 42031. Adhesive layer; 42042. First support plate ; 4205. Second support board; 500. Terminal; 510. Flexible display screen; 511. Application icons; 512. Virtual buttons.

detailed description

The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. In addition, it should be pointed out that in the embodiments of the present application, unless otherwise specified, "multiple" refers to two or more.

The embodiment of the present application provides a flexible display screen, which can be folded or rolled and can be applied to a foldable terminal. The terminal can be a mobile phone, a tablet computer, a notebook computer, a TV, a smart wearable device, etc. The flexible display screen provided in the embodiments of the present application can also be independently set up, and can be connected to other devices in communication to display content indicated by other devices. The embodiments of the present application do not limit application scenarios.

The flexible display screen provided by the embodiment of the present application can be applied to the terminal shown in FIG. 1. FIG. 1 is a schematic structural diagram of a terminal to which a flexible display screen can be applied according to an embodiment of the present application in a use state. The terminal 100 may be a terminal device such as a tablet computer, a mobile phone, a camera, a personal computer, a notebook computer, a vehicle-mounted device, and a wearable device. The terminal 100 of the embodiment shown in FIG. 1 uses a mobile phone as an example for illustration.

Please refer to FIGS. 1 to 4 together. FIG. 2 is a schematic structural diagram of the terminal 100 shown in FIG. 1 in another use state. FIG. 3 is a schematic structural diagram of the terminal 100 shown in FIG. 1 from another perspective. 4 is a schematic cross-sectional view of an embodiment of the terminal 100 shown in FIG. 3 at the line A-A.

The terminal 100 includes a first part 10, a second part 20, and a third part 30 connected in sequence; wherein, the second part 20 includes a folding structure 21. The folding mechanism 21 allows the third part 30 to be folded relative to the first part 10.

In some embodiments, the side of the first part 10 close to the second part 20 is provided with an accommodation space 11. For example, the thickness of a partial area of the first portion 10 is smaller than that of another partial area, and the recess forms the accommodating space 11. The folding structure 21 is used to fold the third part 30 relative to the first part 10 and the third part 30 is transferred into the containing space 11. The folding structure 21 is also used to expand the third part 30 relative to the first part 10 and roll out of the containing space 11. In other words, when the folding structure 21 causes the third part 30 to be folded relative to the first part 10, the third part 30 is transferred into the containing space 11. In addition, when the folding structure 21 makes the third part 30 unfold relative to the first part 10, the third part 30 rotates out of the containing space 11.

In this embodiment, by providing the folding structure 21 of the second part 20, the third part 30 can be folded relative to the first part 10 and the third part 30 is transferred into the accommodating space 11, so the terminal 100 is more compact and easy to carry.

The terminal 100 also includes a display screen 40. Wherein, the display screen 40 may be a flexible display screen provided in this embodiment of the application, that is, the display screen 40 may be bent or flattened. Specifically, the display screen 40 includes a first screen area 41, a second screen area 42 and a third screen area 43 that are sequentially connected.

The first screen area 41 is fixed on the side of the first part 10 away from the receiving space 11. The second screen area 42 is fixed to the second part 20, and the third screen area 43 is fixed to the third part 30. When the third part 30 is transferred into the accommodating space 11, the first screen area 41 and the third screen area 43 are arranged opposite to each other. When the third part 30 rotates out of the containing space 11, the first screen area 41, the second screen area 42, and the third screen area 43 are flattened. That is, the first screen area 41, the second screen area 42, and the third screen area 43 are approximately 180°.

In this embodiment, when the third part 30 is folded relative to the first part 10 and the third part 30 is transferred into the accommodating space 11, the first screen area 41 and the third screen area 43 are arranged opposite to each other, so that the display screen 40 can be double-sided. The display or the main screen and the sub-screen are displayed separately, so the use of the terminal 100 is more diverse. When the third part 30 expands relative to the first part 10 and rolls out of the accommodating space 11, the first screen area 41, the second screen area 42, and the third screen area 43 are flattened, and the display screen 40 can realize large-screen display, thereby satisfying users The user experience of the terminal 100 is significantly improved.

In some embodiments, in a direction perpendicular to the display screen 40, the first portion 10 has a first thickness, the second portion 20 has a second thickness, and the third portion 30 has a third thickness. In an embodiment, the first thickness is greater than the third thickness, so that more components can be arranged in the first portion 10. At this time, the second thickness may be the same as the third thickness, or it may show a decreasing trend in the direction from the first part 10 to the third part 30. In another embodiment, the first thickness is equal to the third thickness, so that the appearance of the terminal 100 is more consistent. At this time, the second thickness may be the same as the first thickness, or may be smaller than the first thickness. This application does not strictly limit the relationship between the first thickness, the second thickness, and the third thickness.

Please refer to FIGS. 3 and 4 again. In some embodiments, the terminal 100 includes a first structure 12, a second structure 13 and a circuit board assembly 14. The first part 10 includes a first structure 12, a second structure 13 and a circuit board assembly 14. In one embodiment, the first structural member 12 is staggered from the first bottom wall 111 of the containing space 11. That is, the first structural members 12 are arranged staggered from the accommodating space 11.

Wherein, the first structural member 12 may be a back cover. The second structural member 13 may be a front shell. As shown in FIG. 4, the first screen area 41 may be provided on the side of the front shell (ie, the second structural member 13) away from the receiving space 11. When the terminal 100 is folded (that is, when the third part 30 is folded relative to the first part 10 and the third part 30 is transferred into the accommodating space 11), the third screen area 43 is located on the side of the third part 30 away from the first part 10, that is, The third portion 30 is away from a side of the first bottom wall 111 of the receiving space 11. The second screen area 42 is located outside the bend of the second part 20.

As shown in FIG. 4, the terminal 100 further includes a rear cover decoration 15. The rear cover decoration 15 is located in the first part 10. The rear cover decoration 15 is disposed on the front shell (ie, the second structural member 13). The rear cover decoration 15 and the front shell (ie, the second structural member 13) form a storage space S. The first structure 12 and the circuit board assembly 14 are both arranged in the storage space S. It can be understood that the front shell (ie, the second structural member 13) includes a second bottom wall 131 and a first side wall 132 and a second side wall 133 opposite to each other. The second bottom wall 131 is connected between the first side wall 132 and the second side wall 133. The edges of the rear cover decoration 15 are connected to the first side wall 132 and the second side wall 133, so that the rear cover decoration 15 and the front shell (ie, the second structural member 13) form a substantially closed storage space S.

In this embodiment, by covering the rear cover decoration 15 on the front shell (ie, the second structural member 13), the storage space S is formed, so as to protect the circuit board assembly 14 and the rear cover located in the storage space S (I.e., the first structural member 12), that is, to prevent the circuit board assembly 14 and the rear cover (the first structural member 12) from being damaged due to collision with external objects of the terminal 100, and to prevent external dust or water stains from the terminal 100 from entering the terminal 100's interior.

Optionally, the surface of the rear cover decorative member 15 facing the front case (ie, the second structural member 13) may be partially attached to the rear cover (ie, the first structural member 12), which can make the overall strength of the terminal 100 stronger and The internal space of the terminal 100 can be made more compact.

Optionally, the third screen area 43 may be flush with a partial area of the rear cover decoration 15 to make the appearance of the terminal 100 more consistent.

In some embodiments, referring to FIG. 3 and FIG. 4 again, the terminal 100 includes a battery 16. The battery 16 is located in the first part 10. The battery 16 is staggered from the circuit board assembly 14, and the battery 16 is facing the first bottom wall 111 of the containing space 11. It is understandable that the battery 16 can be electrically connected to the circuit board assembly 14 to provide power to the components 140 on the circuit board assembly 14. It is understandable that when the battery 16 is facing the first bottom wall 111 of the accommodating space 11, the battery 16 can effectively use the space inside the first part 10 facing the first bottom wall 111 of the accommodating space 11 to improve the first part 10. Space utilization.

Next, with reference to FIGS. 5 to 12, the flexible display screen provided by the application embodiment will be described in detail.

Referring to 5, the flexible display screen provided by the embodiment of the present application includes a display layer 410 and a support layer 420. The support layer 420 has strong rigidity and is located on the back of the display layer to increase the rigidity of the display screen; the support layer 420 includes at least one bending area 4202 and at least one non-bending area 4201. The bending area 4202 can be folded or bent relative to the non-bending area 4201, so that the supporting layer 420 can be bent or bent, thereby driving the display layer 410 to bend or bend, thereby achieving flexibility Folding or curling of the display.

In some embodiments, referring to FIG. 5, the support layer 420 includes a bending area 4202 and two non-bending areas 4201, wherein the bending area 4202 is located between the two non-bending areas 4201. When applied to the terminal shown in FIGS. 1-4, the bending area 4202 belongs to the second screen area 42 of the display screen 40, and the two non-bending areas 4201 belong to the first screen area 41 and the second screen area of the display screen 40, respectively. District 43. In some embodiments, the bending area 4202 has bending resistance, and the loadable bending number is greater than 200,000 times.

In some embodiments, referring to FIG. 6, the support layer 420 may be bent outward, that is, the support layer 420 may be turned outward, so that the flexible display screen may be folded or rolled inward. When applied to the terminal shown in FIGS. 1-4, when the display screen 40 is folded by turning the support layer 420 outward, the display layer corresponding to the first screen area 41 can be brought into contact with the display layer corresponding to the third screen area 43. At this time, the display layer 410 is located inside the support layer 420.

In some embodiments, referring to FIG. 7, the support layer 420 may be bent inward so that the display layer 410 may be located outside the support layer 420 so that the flexible display screen may be folded or rolled outward. When applied to the terminal shown in FIGS. 1-4, when the display screen 40 is folded by turning the support layer 420 inward, the display layer corresponding to the first screen area 41 and the display layer corresponding to the third screen area 43 can be arranged opposite to each other .

Further, in some embodiments, as shown in FIGS. 6 and 7, when the flexible display screen is folded, under the action of the support layer 420, the folding angle of the display layer 410 is curved, thereby avoiding the folding of the display screen. Or wrinkles, arches, or creases caused by curling.

In some embodiments, the thickness of the bending area 4202 is not greater than that of the non-bending area 4201.

In the first example of these embodiments, the thickness of the bending area 4202 is smaller than that of the non-bending area 4201. In this example, the constituent material of the bending area 4202 and the constituent material of the non-bending area 4201 may be the same. The thickness of the bending area 4202 is relatively thin, so that the bending area 4202 can be bent relative to the non-bending area 4201, which improves the foldable or curling characteristics of the flexible display screen. The thickness of the bending area 4202 should be within an appropriate range. If it is too thin, the rigidity is insufficient and it is difficult to maintain an arc shape during bending; if it is too thick, it is not easy to bend or has no bending ability.

In the first example of these embodiments, the thickness of the non-bending area 4201 is relatively thick, which improves the rigidity of the flexible display screen, and can protect the display layer 410 during repeated folding or curling of the flexible display screen. Wrinkles, arches or creases occur after repeated folding or curling, thereby ensuring the flatness of the flexible display screen.

In an example of the first example of these embodiments, the thickness of the bending area 4202 is less than 0.2 mm. In a specific example, the thickness of the bending area 4202 is 0.01 mm. In another specific example, the thickness of the bending zone 4202 is 0.05 mm. In another specific example, the thickness of the bending area 4202 is 0.1 mm. In another specific example, the thickness of the bending zone 4202 is 0.2 mm.

In an example of the first example of these embodiments, the thickness of the non-bending area 4201 is 0.02-0.5 mm. In a specific example, the thickness of the non-bending area 4201 is 0.02 mm. In another specific example, the thickness of the non-bending area 4201 is 0.25 mm. In another specific example, the thickness of the non-bending area 4201 is 0.5 mm.

It should be noted that although the thickness of the bending area 4202 and the thickness of the non-bending area 4201 are separately introduced above, in the first example of these embodiments, the thickness of the bending area 4202 is set to the same value as the non-bending area 4202. The value of the thickness of the bending area 4201 is performed jointly, and the thickness of the bending area 4202 is made smaller than the thickness of the non-bending area 4201. In a specific example, the thickness of the bending area 4202 is 0.01 mm, and the thickness of the non-bending area 4201 is 0.02 mm. In another specific example, the thickness of the bending area 4202 is 0.01 mm, and the thickness of the non-bending area 4201 is 0.2 mm. In another specific example, the thickness of the bending area 4202 is 0.1 mm, and the thickness of the non-bending area 4201 is 0.2 mm. In another specific example, the thickness of the bending area 4202 is 0.1 mm, and the thickness of the non-bending area 4201 is 0.25 mm. In another specific example, the thickness of the bending area 4202 is 0.1 mm, and the thickness of the non-bending area 4201 is 0.5 mm. In another specific example, the thickness of the bending area 4202 is 0.2 mm, and the thickness of the non-bending area 4201 is 0.5 mm. In another specific example, the thickness of the bending area 4202 is 0.2 mm, and the thickness of the non-bending area 4201 is 0.25 mm. In another specific example, the thickness of the bending area 4202 is 0.2 mm, and the thickness of the non-bending area 4201 is 0.4 mm. Wait, I won't list them all here.

In an example of the first example of these embodiments, referring to FIG. 5, in the non-bending state of the support layer 420, the upper surface of the non-bending area 4201 and the upper surface of the bending area 4202 are on the same plane, The lower surface of the bending area 4202 is recessed inward relative to the non-bending area 4201. The upper surface refers to the side facing the display layer 410, and the lower surface refers to the side facing away from the display layer 410. In this example, the flatness of the flexible display screen can be further ensured.

In an example of the first example of these embodiments, the upper surface of the non-bending area 4201 is recessed inward relative to the non-bending area 4201, and the lower surface of the bending area 4202 is recessed inward relative to the non-bending area 4201. The upper surface refers to the side facing the display layer 410, and the lower surface refers to the side facing away from the display layer 410.

In an example of the first example of these embodiments, the upper surface of the non-bending area 4201 is recessed inward with respect to the non-bending area 4201, and the lower surface of the non-bending area 4201 and the lower surface of the bending area 4202 are on the same plane. on. The upper surface refers to the side facing the display layer 410, and the lower surface refers to the side facing away from the display layer 410.

In the second example of these embodiments, the thickness of the bending area 4202 may be equal to the thickness of the non-bending area 4201. In this example, the material of the bending zone 4202 can be different from the material of the non-bending zone 4201, and the rigidity of the material of the bending zone 4202 is less than that of the non-bending zone 4201, so that the bending zone 4202 is easier to compare with the non-bending zone 4201. The folding area 4201 is bent.

In some embodiments, the support layer 420 is a metal plate. The metal plate can be a stainless steel plate, a copper plate, a beryllium copper plate, or a titanium alloy plate, etc., which will not be listed here.

In an example of these embodiments, the bending area 4202 and the non-bending area 4201 on the support layer 420 can be processed from a piece of metal plate, which on the one hand further improves the strength and rigidity of the support layer 420, thereby increasing The strength and rigidity of the flexible display screen; on the other hand, the flatness of the flexible display screen is further ensured. The processing method of the bending area 4202 on the support layer 420 can be chemical etching, laser etching, stamping, computer numerical control (CNC) machining, etc., which will not be repeated here. .

In some embodiments, the at least one bending area may include one bending area 4202, that is, there is only one bending area 4202 on the support layer 420. There is a non-bending area 4201 on both sides of the bending area 4202, that is, the bending area 4202 is located between the two non-bending areas 4201, so that the flexible display screen can be folded as shown in FIG. 6 and FIG.

In an example of these embodiments, the bending area 4202 is located in the center of the support layer 420, that is, the non-bending areas 4201 on both sides of the bending area 4202 are the same size. In this example, the user's feel when folding or rolling the flexible display screen can be improved, and the flatness of the flexible display screen can be further ensured.

In some embodiments, the at least one bending area includes a plurality of bending areas 4202, the at least one non-bending area includes a plurality of non-bending areas 4201; and the interval between adjacent non-bending areas 4201 is at least A bending area 4202. In this example, by providing multiple bending areas 4202, it can be applied to a larger flexible display screen, so that the flexible display screen can be folded multiple times, or folded in multiple areas, or can be rolled, which further improves user experience.

In some embodiments, the support layer 420 may be adhered to the back of the display layer 410 through an adhesive layer 4203.

In an example of these embodiments, the adhesive layer 4203 may be an adhesive layer, that is, the support layer 420 and the display layer 410 are bonded together by adhesive. The adhesive can be specifically OCA (Optically Clear Adhesive) optical glue, PVB (polyvinyl butyral) glue, UV (Ultraviolet) glue, liquid transparent glue, etc., which will not be listed here. .

In order to further avoid wrinkles, arches or creases caused by folding or curling of the display screen, the thickness of the adhesive layer 4203 may be 0.01 mm-0.2 mm. In one example, the thickness of the adhesive layer 4203 is 0.01 mm. In another example, the thickness of the adhesive layer 4203 is 0.1 mm. In another example, the thickness of the adhesive layer 4203 is 0.2 mm.

In some embodiments, the adhesive layer 4203 may be an integral adhesive layer or a superposition of multiple adhesive layers.

It should be noted that the non-bending state of the supporting layer 420 refers to a state in which the bending area 4202 of the supporting layer 420 is not bent. In FIG. 5, the state in which the support layer 420 is located is the non-bending state.

In some embodiments, referring to FIG. 8, the supporting layer 420 includes a first supporting plate 4204 and at least one second supporting plate 4205, and the second supporting plate 4205 can be bent. Wherein, the 4 bending area 4202 and the non-bending area 4201 of the support layer 420 are specifically the area of the first support plate 4204; the at least one second support plate 4205 is stacked on the display layer 410 and the first support plate 4204. Between a support plate 4204.

The first support plate 4204 is divided into a bending area 4202 and a non-bending area 4201 to ensure the folding or curling ability of the flexible display screen. The second support plate 4205 does not distinguish between a bending zone and a non-bending zone, its thickness is uniform, and the whole is bendable, and can bear more than 200,000 bends. It can provide support and protection for the display layer of the flexible display, and further increase the strength and rigidity of the flexible display, and further ensure the flatness of the flexible display.

In an example of these embodiments, one side of the at least one second support plate 4205 is adhered to the back of the display layer 410 through an adhesive layer 4203; the first support plate 4204 is adhered through an adhesive layer 4203 To the other side of the at least one second support plate 4205. In this example, the adhesive layer 4203 can be implemented with reference to the above, which will not be repeated here.

In an example of these embodiments, the at least one second supporting plate 4205 includes a plurality of second supporting plates 4205, and the plurality of second supporting plates 4205 are sequentially bonded by an adhesive layer 4203. A plurality of second supporting plates 4205 are stacked one after another, and two adjacent second supporting plates 4205 are bonded by an adhesive layer 4203. In this example, the adhesive layer 4203 can be implemented with reference to the above, which will not be repeated here.

It should be noted that when the flexible display screen provided by the embodiment of the present application has multiple adhesive layers 4203, the constituent materials of the multiple adhesive layers 4203 may be the same or different. For example, all of them may be an adhesive layer composed of OCA optical adhesive, or an adhesive layer composed of OCA optical adhesive, an adhesive layer composed of PVB adhesive, or an adhesive layer composed of UV adhesive.

In an example of these embodiments, the thickness of the second support plate 4205 is 0-0.2 mm. In an example, the thickness of the second support plate 4205 is 0.01 mm. In an example, the thickness of the second support plate 4205 is 0.1 mm. In an example, the thickness of the second support plate 4205 is 0.2 mm.

In an example of these embodiments, the first support plate 4204 is a first metal plate; the second support plate 4205 is a second metal plate or an organic composite plate; wherein, the second metal plate includes amorphous Metal plate.

In these examples, the first metal plate may be a stainless steel plate, a copper plate, a beryllium copper plate, or a titanium alloy plate, etc., which will not be listed here. The bending area 4202 and the non-bending area 4201 on the first support plate 4204 are designed in one piece, which on the one hand further improves the strength and rigidity of the first support plate 4204, thereby increasing the strength and rigidity of the flexible display screen; This further ensures the flatness of the flexible display screen. The forming method of the first support plate 4204 may be chemical etching, laser etching, stamping, or computer numerical control (CNC) machining, etc., which will not be repeated here.

In this example, the second metal plate may be a stainless steel plate, a copper plate, a beryllium copper plate, or a titanium alloy plate, etc., which will not be listed here. The second metal plate may also be an amorphous metal plate. The second metal plate may also be an amorphous metal plate.

In some embodiments, in the non-bending state of the supporting layer 420, the display screen is a flat display screen. In this embodiment, the flexible display screen is specifically a flat display screen.

In some embodiments, in the non-bending state of the support layer 420, the display screen is a curved display screen. In this embodiment, the flexible display screen is specifically a curved display screen.

In some embodiments, referring to FIGS. 9, 10 and 11, the display layer 410 includes a display panel 4104 and a back film 4105; wherein, the support layer 420 is located on the back of the back film 4105. Further, the display layer may further include a cover plate 4101, an optical adhesive layer 4102, and a polarizer (Polarizer, POL) layer 4103. The cover 4101 may be a flexible cover.

In an example of these embodiments, referring to FIG. 9, the display layer 410 includes a cover plate 4101, an optical adhesive layer 4102, a POL layer 4103, a display panel 4104, and a back film 4105 stacked in sequence, wherein the support layer 420 passes through an adhesive layer 4203 is bonded to the back film 4105.

In this example, the display panel 4104 is a display panel with a touch function, which can realize the function of a touch panel. In one example, the on-cell technology can be used to embed the touch panel on the light emitting layer of the display panel.

In another example of these embodiments, referring to FIG. 10, the display layer 410 includes a cover plate 4101, an optical adhesive layer 4102, a touch panel 4106, a POL layer 4103, a display panel 4104, and a back film 4105 stacked in sequence, wherein the support The layer 420 is bonded to the back film 4105 through the adhesive layer 4203.

In yet another example of these embodiments, referring to FIG. 11, the display layer 410 includes a cover plate 4101, an optical adhesive layer 4102, a POL layer 4103, a touch panel 4106, a display panel 4104, and a back film 4105 stacked in sequence, wherein the support The layer 420 is bonded to the back film 4105 through the adhesive layer 4203.

In some embodiments, the non-bending area 4201 has a fixing member on a side facing away from the display layer 410; the fixing member is used to fix the display screen to the terminal. The fixing member is used to fix the display screen to the terminal, thereby further improving the strength, rigidity and flatness of the display screen.

In an example of these embodiments, the fixing member may be a threaded hole. The threaded hole is a tubular hole arranged on the non-bending area 4201 with threads, and the opening is located on the side of the non-bending area 4201 away from the display layer 410. One non-bending area 4201 may have at least one threaded hole. At least one threaded hole is randomly distributed or evenly distributed on the non-bending area 4201. When applied to the terminal shown in FIGS. 1-4, the first part 10 and the third part 30 of the terminal 100 also have screw holes at positions corresponding to the screw holes on the non-bending area 4201. When assembling, the threaded hole on the non-bending area 4201 and the threaded hole on the terminal 100 can be connected and fixed by a screw matching the threaded hole, so that the display screen can be fixed to the terminal.

In an example of this example, the thread direction of the threaded hole on the terminal is opposite to the thread direction of the threaded hole on the non-bending area 4201. The thread of the threaded hole on the terminal and the thread of the threaded hole on the non-bending area 4201 are mutually opposite threads. This design has lower requirements on the thread direction of the screw, which is convenient for installation and operation.

In one of these embodiments, the fixing member is a buckle. For one non-bending area 4201, there may be at least one buckle. At least one buckle is randomly distributed or evenly distributed on the side of the non-bending area 4201 away from the display layer 410. When applied to the terminal shown in FIGS. 1-4, the positions corresponding to the buckles on the non-bending area 4201 of the first portion 10 and the third portion 30 have grooves matching the buckles. When assembling, the display screen can be connected to the terminal 100 by a buckle. The material of the buckle can be a metal material, such as stainless steel, copper, beryllium copper, titanium alloy, and the like. The material of the buckle can also be an amorphous metal material. The material of the buckle can also be an organic compound. The buckle can be integrally formed with the non-bending area 4201. The forming method can be chemical etching, laser etching, stamping, computer numerical control machine processing, and so on. The buckle can be fixed on the non-bending area 4201 by means of spot welding, bonding, or dispensing.

In some embodiments, the fixing member is a slot. For a non-bending area 4201, there may be at least one card slot. At least one card slot is randomly distributed or evenly distributed on the side of the non-bending area 4201 away from the display layer 410. When applied to the terminal shown in FIGS. 1-4, the first part 10 and the third part 30 are provided with buckles matching the card slots at positions corresponding to the card slots on the non-bending area 4201. During assembly, the display screen can be connected to the terminal 100 through the card slot. The material of the card slot can be a metal material, such as stainless steel, copper, beryllium copper, titanium alloy, etc. The material of the card slot can also be an amorphous metal material. The material of the card slot can also be an organic compound. The card slot can be integrally formed with the non-bending area 4201. The forming method can be chemical etching, laser etching, stamping, computer numerical control machine processing, and so on. The card slot can be fixed on the non-bending area 4201 by means of spot welding, bonding, or glue dispensing.

In some embodiments, referring to FIG. 12, the fixing member is a nut 42011. For a non-bending area 4201, there may be at least one nut 42011. At least one nut 42011 is randomly distributed or evenly distributed on the side of the non-bending area 4201 away from the display layer 410. During assembly, the display screen can be fixed to the terminal with a nut 42011. When applied to the terminal shown in FIGS. 1-4, a nut may be provided at the corresponding positions of the first part 10 and the third part 30. The nut 42011 and the nut on the terminal 100 can be connected and fixed by a screw.

In an example of this example, the thread direction of the nut on the part 10 and the third part 30 is opposite to the thread direction of the nut 42011. This design has lower requirements on the thread direction of the screw, which is convenient for installation and operation.

The material of the nut 42011 may be a metal material, such as stainless steel, copper, beryllium copper, titanium alloy, and the like. The material of the nut 42011 may also be an amorphous metal material. The material of the nut 42011 can also be an organic compound. The nut 42011 can be integrally formed and designed with the non-bending area 201. The forming method can be chemical etching, laser etching, stamping, computer numerical control machine processing, and so on. The nut 42011 can be fixed on the non-bending area 4201 by means of spot welding, bonding, or glue dispensing.

The embodiment of the present application also provides a terminal 500. Referring to FIG. 13, the terminal 500 is a foldable terminal with a processor (not shown), a memory (not shown), a radio frequency circuit (not shown), and a flexible Display screen 510; among them, the processor is used to process data, and specifically can be a central processing unit (Central Processing Unit, CPU), or other general-purpose processors, digital signal processors (Digital Signal Processors, DSPs), and application-specific integrated circuits ( Application Specific Integrated Circuit, ASIC) etc. The general-purpose processor may be a microprocessor or any conventional processor. The memory is used to store data, which can be Random Access Memory (RAM), flash memory, Read-Only Memory (ROM), Programmable ROM (PROM), and erasable Programmable read-only memory (Erasable PROM, EPROM), electrically erasable programmable read-only memory (Electrically EPROM, EEPROM), registers, hard disks, etc. Radio frequency circuits are used to receive or transmit signals to interact with other devices. The flexible display screen 510 may be the flexible display screen shown in any one of FIG. 5 to FIG. 12, and at least one application icon 511 and a virtual button 512 may be displayed thereon. The flexible display screen has strong rigidity and can be bent in a certain arc when the display screen is folded or rolled, avoiding wrinkles, arches or creases caused by folding or curling, and improves the user's visual experience.

The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited to this. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention. It should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

A flexible display screen, characterized in that it comprises:

Display layer

The supporting layer is located on the back of the display layer to increase the rigidity of the display;

The supporting layer includes at least one bending zone and at least one non-bending zone; the bending zone can be bent or bent relative to the non-bending zone, so that the supporting layer can be bent or bent.
The display screen of claim 1, wherein the thickness of the bending area is not greater than the thickness of the non-bending area.
The display screen according to claim 2, wherein in the non-bending state of the support layer, the upper surface of the non-bending area and the upper surface of the bending area are on the same plane, and the The lower surface of the area is recessed inward relative to the non-bending area; wherein, the upper surface is the side facing the display layer, and the lower surface is the side facing away from the display layer.
The display screen of claim 2, wherein the thickness of the bending area is less than 0.2 mm.
The display screen of claim 2, wherein the thickness of the non-bending area is 0.02-0.5 mm.
The display screen of claim 1, wherein the supporting layer is a metal plate.
The display screen of claim 1, wherein when the at least one bending area includes a bending area, the bending area is located at the center of the supporting layer.
The display screen of claim 1, wherein the at least one bending area includes a plurality of bending areas, the at least one non-bending area includes a plurality of non-bending areas; and adjacent non-bending areas There is at least one bending zone between the zones.
The display screen of claim 1, wherein the support layer is adhered to the back of the display layer through an adhesive layer.
The display screen according to claim 1, wherein the supporting layer comprises a first supporting plate and at least one second supporting plate, and the second supporting plate can be bent; wherein,

The bending area and the non-bending area are areas of the first support plate;

The at least one second support plate is located between the display layer and the first support plate.
The display screen according to claim 10, wherein one side of the at least one second supporting plate is bonded to the back of the display layer through an adhesive layer; the first supporting plate is bonded through an adhesive layer To the other side of the at least one second support plate.
The display screen according to claim 10, wherein the at least one second supporting plate comprises a plurality of second supporting plates, and the plurality of second supporting plates are sequentially bonded by an adhesive layer.
The display screen of claim 10, wherein the thickness of the second support plate is 0-0.2 mm.
The display screen of claim 10, wherein the first support plate is a first metal plate; the second support plate is a second metal plate or an organic composite plate; wherein, the second metal plate Including amorphous metal plates.
The display screen of claim 1, wherein in the non-bending state of the support layer, the display screen is a flat display screen.
The display screen according to claim 1, wherein the display screen is a curved display screen in the non-bending state of the support layer.
The display screen according to claim 1, wherein the display layer comprises a display panel and a back film; wherein the support layer is located on the back of the back film.
The display screen according to claim 1, wherein a fixing member is provided on a side of the non-bending area away from the display layer; the fixing member is used to fix the display screen to the terminal.
The display screen of claim 18, wherein the fixing member comprises any one of the following:

Threaded holes, buckles, slots, nuts.
A terminal, characterized by comprising the display screen according to any one of claims 1-19.