CN111131563A - Foldable display module and mobile terminal - Google Patents
Foldable display module and mobile terminal Download PDFInfo
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- CN111131563A CN111131563A CN201811647390.6A CN201811647390A CN111131563A CN 111131563 A CN111131563 A CN 111131563A CN 201811647390 A CN201811647390 A CN 201811647390A CN 111131563 A CN111131563 A CN 111131563A
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- display module
- foldable display
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/026—Details of the structure or mounting of specific components
- H04M1/0266—Details of the structure or mounting of specific components for a display module assembly
- H04M1/0268—Details of the structure or mounting of specific components for a display module assembly including a flexible display panel
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/026—Details of the structure or mounting of specific components
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M2250/00—Details of telephonic subscriber devices
- H04M2250/22—Details of telephonic subscriber devices including a touch pad, a touch sensor or a touch detector
Abstract
The embodiment of the application provides a foldable display module and a mobile terminal. This collapsible display module assembly includes: the touch screen comprises a flexible screen, a touch layer and a cover plate; the flexible screen comprises a first display area, a second display area and a bendable area which is connected with the first display area and the second display area; the cover plate includes: a first rigid layer covering the first display area; a second rigid layer covering the second display area; a flexible layer covering the bendable region; the flexible layer is respectively connected with the first rigid layer and the second rigid layer; also included is a first organic material layer overlying the first rigid layer, the flexible layer, and the second rigid layer. It can be seen from the above description that the foldable display module is made of different materials through splicing, and the protection strength of the foldable display module and the performance of the foldable display module are improved through the adopted first rigid layer and the adopted second rigid layer. In addition, the flexible layer corresponds to the bendable area of the flexible screen, and the flexible screen is convenient to bend.
Description
The present application claims priority of chinese patent application with the title "a display module and a mobile terminal" filed by the intellectual property office of the people's republic of china, application No. 201811296673.0, on 11/1/2018, the entire contents of which are incorporated herein by reference.
Technical Field
The application relates to the technical field of mobile terminals, in particular to a foldable display module and a mobile terminal.
Background
The foldable flexible screen mobile phone is an important evolution direction of the differentiation of the mobile phone in the future, and compared with a conventional cover plate, the TP cover plate aiming at the scheme has higher requirements. The apron needs to be able to realize buckling, and still needs to protect the screen module except that intensity is enough itself. The requirements on materials and design are high.
And the glass cover plate with the conventional thickness is difficult to meet the requirement of bending, and therefore, some manufacturers adopt thin glass as the cover plate. However, although thin glass can be bent, it has a high risk of reliability failure.
And other manufacturers adopt high-strength organic composite boards, so that the requirement of durability in large-angle bending can be met. However, the composite material has poor rigidity and rigidity, and the wear-resistant and impact-resistant protection performance is insufficient, and the organic material TP cover plate does not feel like a glass cover plate for user experience.
Disclosure of Invention
The embodiment of the application provides a foldable display module and a mobile terminal, and the foldable display module is used for improving the performance of the flexible screen mobile terminal.
In a first aspect, a foldable display module is provided, which includes a flexible screen, a touch layer and a cover plate. Wherein, this flexible screen includes the triplex, is respectively: the display device comprises a first display area, a second display area and a bendable area connecting the first display area and the second display area. Correspondingly, the cover plate comprises three parts which are respectively: a first rigid layer, a second rigid layer, and a flexible layer; the first rigid layer covers the first display area, the second rigid layer covers the second display area, and the flexible layer covers the bendable area. When the first rigid layer, the second rigid layer, and the flexible layer are specifically provided, the flexible layer is connected to the first rigid layer and the second rigid layer, respectively. In addition, the cover plate also comprises a first organic material layer covering the first rigid layer, the flexible layer and the second rigid layer; in particular, the flexible layer may be connected to the first rigid layer and the second rigid layer directly or through the first organic material layer. When the touch layer is arranged, the touch layer can be arranged between the flexible screen and the cover plate, or arranged on one side of the flexible screen, which is deviated from the cover plate, or the cover plate is deviated from one side of the flexible screen. Can see out through the above-mentioned description, this collapsible display module assembly adopts the material concatenation of difference to prepare and form to first rigid layer and the second rigid layer through the adoption has improved the protection dynamics of collapsible display module assembly, and experience effect during the touch-control, in addition, the flexible layer through setting up corresponds the flexible district of buckling of flexible screen, and the bending of the flexible screen of being convenient for has improved the performance of collapsible display module assembly.
When the foldable display module is folded, the first organic material layer is positioned at the inner side, so that the cover plate can be protected.
When the flexible layer is specifically disposed, different structures, such as a single-layer structure or a multi-layer structure, may be adopted, and in a specific embodiment, the flexible layer adopts a single-layer structure, and the single-layer structure may be prepared by using different materials, such as the flexible layer is a second organic material layer. When a second organic material layer is used, the second organic material layer may be made of different organic materials, such as polyethylene terephthalate, polyolefin thermoplastic elastomer, polyimide, and the like.
When the flexible layer is connected with the first rigid layer and the second rigid layer, two opposite sides of the second organic material layer are respectively connected with the first rigid layer and the second rigid layer through the first bonding layer in a bonding mode.
When the flexible layer is of a single-layer structure, an adhesive layer can also be used as the flexible layer, and at this time, the flexible layer is a second adhesive layer, and when the flexible layer is connected with the first rigid layer and the second rigid layer, the second adhesive layer is respectively connected with the first rigid layer and the second rigid layer in an adhesive manner.
When the flexible layer is of a multilayer structure, the flexible layer comprises a first flexible layer and a second flexible layer which are stacked, and the first flexible layer and the second flexible layer are connected in an adhesion mode. And the stiffness of the first flexible layer and the stiffness of the second flexible layer may be the same or different, for example, the stiffness of the first flexible layer is greater than the stiffness of the second flexible layer. Wherein the first flexible layer may be closer to the first organic material layer than the second flexible layer. I.e., the first flexible layer may be closer to the outer surface of the terminal than the second flexible layer.
When the first rigid layer and the second rigid layer are specifically provided, different materials can be selected, for example, the first rigid layer is any one of a glass layer, a transparent ceramic layer, or a sapphire layer; the second rigid layer is any one of a glass layer, a transparent ceramic layer or a sapphire layer. The first rigid layer and the second rigid layer may be made of the same material or different materials, and in a specific embodiment, the first rigid layer and the second rigid layer are made of the same material.
In a specific embodiment, the refractive indexes of the first rigid layer and the second rigid layer are the same, and the ratio of the refractive indexes of the first rigid layer and the flexible layer is between 0.9:1 and 1: 0.9.
When the edge of the flexible screen is arc-shaped, the edge of the foldable display module is provided with an arc-shaped bending structure covering the edge of the flexible screen. Thereby the flexible screen can be better protected.
When the first organic material layer is specifically arranged, the first rigid layer, the second rigid layer and the flexible layer are respectively arranged in a stacking manner and fixedly connected with the first organic material layer; and the flexible layer is connected with the first rigid layer and the second rigid layer through the first organic material layer. Thereby better protecting the screen.
In a specific embodiment, the first organic material layer is adhesively connected to the first rigid layer, the second rigid layer, and the flexible layer by a third adhesive layer.
When the flexible layer is a second bonding layer, the third bonding layer and the second bonding layer are of an integrated structure. Thereby simplifying the structure of the whole foldable display module. In this case, the cross section of the integrated structure formed by the third adhesive layer and the second adhesive layer is convex.
When the flexible layer is a second organic material layer, the second organic material layer and the first organic material layer are of an integral structure. Thereby simplifying the structure of the whole foldable display module. The cross section of the integrated structure formed by the second organic material layer and the first organic material layer is convex-shaped.
In addition, when specifically setting up apron and flexible screen, the shape phase-match of apron with the flexible screen.
In a second aspect, a mobile terminal is provided, which includes any one of the foldable display module, the processor and the memory; the foldable display module and the memory are electrically connected with the processor respectively. Wherein the mobile terminal is foldable. When the mobile terminal is folded, the foldable display module is folded along with the mobile terminal. When the mobile terminal is unfolded, the foldable display module is unfolded along with the mobile terminal. When the foldable display module is folded, the bendable region of the foldable display module, the cover plate covering the bendable region and the touch layer are in a bent state. When the foldable display module is unfolded, the bendable region of the foldable display module, the cover plate covering the bendable region and the touch layer are in a flat state. This collapsible display module assembly adopts the material concatenation preparation of difference to the protection dynamics of collapsible display module assembly has been improved through the first rigid layer and the second rigid layer that adopt, and the experience effect during the touch-control, in addition, the flexible region of buckling of corresponding flexible screen through the flexible layer that sets up, the bending of the flexible screen of being convenient for.
Drawings
Fig. 1 is a schematic diagram of a state of a mobile terminal according to an embodiment of the present application when the mobile terminal is unfolded;
fig. 2 is a schematic diagram of a state of a mobile terminal according to an embodiment of the present application when the mobile terminal is folded;
fig. 3 is a schematic layer structure diagram of a foldable display module according to an embodiment of the present disclosure;
fig. 4 is a schematic layer structure diagram of another foldable display module according to an embodiment of the present disclosure;
fig. 5 is a schematic layer structure diagram of another foldable display module according to an embodiment of the present disclosure;
fig. 6A is a schematic layer structure diagram of another foldable display module according to an embodiment of the present disclosure;
fig. 6B is a schematic layer structure diagram of another foldable display module according to an embodiment of the present disclosure;
fig. 7 is a schematic layer structure diagram of another foldable display module according to an embodiment of the present disclosure;
fig. 8A is a schematic layer structure diagram of another foldable display module according to an embodiment of the present disclosure;
fig. 8B is a schematic layer structure diagram of another foldable display module according to an embodiment of the present disclosure;
fig. 9 is a schematic layer structure diagram of another foldable display module according to an embodiment of the present disclosure;
fig. 10 is a schematic layer structure diagram of another foldable display module according to an embodiment of the present disclosure;
FIG. 11 is a side view of another foldable display module according to an embodiment of the present application;
fig. 12A is a schematic folding diagram of a mobile terminal according to an embodiment of the present application;
fig. 12B is another folding schematic diagram of the mobile terminal according to the embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more clear, the present application will be further described in detail with reference to the accompanying drawings.
For the convenience of understanding the foldable display module provided in the embodiments of the present application, an application scenario of the foldable display module is first described below. The foldable display module is applied to a foldable mobile terminal, such as a foldable mobile phone or a tablet computer or other terminals.
As shown in fig. 1 and fig. 2, a foldable display module 100 provided in the embodiment of the present application is applied to a foldable mobile terminal. Wherein fig. 1 shows the mobile terminal when unfolded; fig. 2 illustrates a folded shape of the mobile terminal; fig. 3 is a schematic structural diagram of a foldable display module according to an embodiment of the present application. First, as shown in fig. 1, when the mobile terminal is unfolded, a case 90 of the mobile terminal is unfolded; meanwhile, the foldable display module 100 disposed in the housing 90 is also unfolded. As illustrated in fig. 2, when the mobile terminal is folded, the case 90 of the mobile terminal is also folded; meanwhile, the foldable display module 100 is also folded. It should be understood that although the foldable display module 100 shown in fig. 2 is located at the exposed side when the mobile terminal is folded, other embodiments of the present application may provide the mobile terminal with the housing 90 exposed and the foldable display module 100 located at the inner side when the mobile terminal is folded. As can be seen from the above description, the foldable display module 100 provided in the embodiment of the present application can be folded following the folding of the mobile terminal.
Referring to fig. 1 to fig. 3, the foldable display module 100 according to the embodiment of the present disclosure may include a flexible screen 60, a touch layer, and a cover plate.
The flexible screen 60 may be an integrated flexible display screen, or may be a spliced display screen composed of two rigid screens and one flexible screen 60 located between the two rigid screens. The touch layer (not shown) also adopts a flexible and foldable structure. No matter which way the flexible screen 60 adopts, the flexible screen 60 includes three parts, which are respectively: a first display area 61, a second display area 63, and a bendable area 62 connecting the first display area 61 and the second display area 63. The cover plate includes a first display area 61, a second display area 63 and a bendable area 62 connected as a whole screen when the mobile terminal is unfolded as shown in fig. 1. The first display area 61 and the second display area 63 correspond to two plane areas of the flexible screen 60 of the mobile terminal after being folded, and the bendable area 62 corresponds to a bending area of the flexible screen 60 of the mobile terminal after being folded.
The cover sheet is stacked with the touch layer and the flexible screen 60. As shown in fig. 4 and 5, the touch layer 80 may be disposed on a side of the flexible screen 60 facing away from the cover plate, or between the flexible screen 60 and the cover plate. Or the touch layer 80 may be arranged on a side of the cover plate facing away from the flexible screen 60 (not shown in the figure). The cover plate of fig. 3 includes a first rigid layer 10, a second rigid layer 30, and a flexible layer 20, and the flexible layer 20 is connected to the first rigid layer 10 and the second rigid layer 30, respectively. The first rigid layer 10 correspondingly covers the first display area 61, the second rigid layer 30 correspondingly covers the second display area 63, and the flexible layer 20 correspondingly covers the bendable area 62. Further to fig. 3, the foldable display module may further include a first organic material layer 50. The first organic material layer 50 may be an organic material layer such as polyethylene terephthalate, polyolefin thermoplastic elastomer, or polyimide, for example. The first organic material layer 50 covers the first rigid layer 10, the flexible layer 20, and the second rigid layer 30. Specifically, the flexible layer 20 may be directly connected to the first and second rigid layers 10 and 30, or the flexible layer 20 may be connected to the first and second rigid layers 10 and 30 through the first organic material layer 50. When the mobile terminal is bent, the cover plate needs to be bent together with the flexible screen 60. After the mobile terminal is folded, the first display area 61 and the second display area 63 are still planar display areas, and the bendable area 62 is bent; similarly, after the mobile terminal is folded, the first rigid layer 10 and the second rigid layer 30 are still plane, and the flexible layer 20 is bent. This collapsible display module assembly adopts the material concatenation preparation of difference to first rigid layer 10 and second rigid layer 30 through adopting have improved the protection dynamics of collapsible display module assembly, and the experience effect during the touch-control, in addition, correspond flexible screen 60's the district 62 of can buckling through the flexible layer 20 that sets up, the bending of the flexible screen 60 of being convenient for has improved the performance of collapsible display module assembly.
At the time of terminal bending, the flexible layer 20 is bent, and the first rigid layer 10 and the second rigid layer 30 are not required to be bent. Therefore, the first rigid layer 10 and the second rigid layer 30 can be made of a material with higher rigidity, such as glass, transparent ceramic or sapphire. The materials of the first rigid layer 10 and the second rigid layer 30 may be the same or different. In a specific embodiment, the first rigid layer 10 and the second rigid layer 30 are made of the same material, for example, the first rigid layer 10 and the second rigid layer 30 are both glass layers, transparent ceramic layers, or sapphire layers. Of course, the first rigid layer 10 and the second rigid layer 30 may be made of different materials, for example, the first rigid layer 10 is made of glass, and the second rigid layer 30 is made of transparent ceramic or sapphire. It should be understood that the above is only a specific example, and the first rigid layer 10 and the second rigid layer 30 can be made of any one of sapphire, glass and transparent ceramic, but other known materials can be used.
As shown in fig. 2, when the mobile terminal is folded, the flexible layer 20 needs to be made of a material with low rigidity because the flexible layer 20 needs to be bent. For example, the stiffness of the flexible layer 20 is less than the stiffness of the first rigid layer 10 and the second rigid layer 30. And the flexible layer 20 may be implemented in a single layer structure or a multi-layer structure. The two structures are described below with reference to the drawings.
As shown in fig. 4, the flexible layer 20 is shown in fig. 4 as a single layer structure. Fig. 4 shows that the first rigid layer 10 and the second rigid layer 30 are arranged on both sides of the flexible layer 20, and the first rigid layer 10 and the second rigid layer 30 are respectively connected to the flexible layer 20. When a specific connection is made, it can be made in different ways, such as a direct connection and an indirect connection. This is explained below one by one.
As shown in fig. 5, the flexible layer 20 is a second organic material layer 21. That is, the flexible layer may be made of an organic material. The material of the second organic material layer 21 may be, for example, an organic material such as polyethylene terephthalate, a polyolefin thermoplastic elastomer, or polyimide. At this time, the second organic material layer 21 may be directly connected to the first rigid layer 10 and the second rigid layer 30 or indirectly connected thereto.
As shown in fig. 6A, when direct bonding is employed, opposite sides of the second organic material layer 21 are bonded to the first rigid layer 10 and the second rigid layer 30 by the first adhesive layer 70, respectively. The first adhesive layer 70 may be optical silica gel, or other common adhesive material with transparency and flexibility.
When indirect connection is adopted, as shown in fig. 5, the first rigid layer 10, the second rigid layer 30 and the flexible layer 20 are respectively stacked on the first organic material layer 50 and fixedly connected, that is, the flexible layer 20 is respectively connected with the first rigid layer 10 and the second rigid layer 30 through the first organic material layer 50. The present embodiment does not limit the stacking order of the first organic material layer 50 and the first rigid layer 10, the second rigid layer 30, and the flexible layer 20. For example: the first organic material layer 50 may face away from the flexible screen 60, while the first rigid layer 10, the second rigid layer 30 and the flexible layer 20 face towards the flexible screen 60, i.e. the first rigid layer 10, the second rigid layer 30 and the flexible layer 20 are in contact with or close to the flexible screen 60. It is of course also possible that the first rigid layer 10, the second rigid layer 30 and the flexible layer 20 face away from the flexible screen 60, while the first organic material layer 50 faces towards the flexible screen 60, i.e. the first organic material layer 50 is in contact with or close to the flexible screen 60. In a specific embodiment, the first organic material layer 50 is selected to face away from the flexible screen 60, so that the rigid layers (the first rigid layer 10 and the second rigid layer 30) provide rigidity and protection for the flexible screen, and ensure the touch feeling of pressing; the first organic material layer 50 on the surface has the functions of anti-falling, energy absorption and shock absorption for the whole assembly, and protects the foldable display module and the rigid layer. In order to realize the fixed connection, the first organic material layer 50 is bonded to the first rigid layer 10, the second rigid layer 30, and the flexible layer 20 through the third adhesive layer 40. At this time, the second organic material layer 21 is not directly connected to the first rigid layer 10 and the second rigid layer 30, but the second organic material layer 21 is connected to the first rigid layer 10 and the second rigid layer 30 through the first organic material layer 50 and the third adhesive layer 40.
Of course, as shown in fig. 6B, it is also possible to employ the second organic material layer 21 in direct connection as well as indirect connection with the first rigid layer 10 and the second rigid layer 30. At this time, the opposite sides of the second organic material layer 21 are bonded to the first rigid layer 10 and the second rigid layer 30 via the first adhesive layer 70. Meanwhile, the second organic material layer 21 is adhesively connected to the first rigid layer 10 and the second rigid layer 30 through the third adhesive layer 40 and the first organic material layer 50, respectively. The first adhesive layer 70 and the third adhesive layer 40 may be made of the same material, and both are made of common adhesive materials such as optical silica gel.
In addition, as an alternative, as shown in fig. 7, when the foldable display module includes the first organic material layer 50, the second organic material layer 21 may adopt an integral structure with the first organic material layer 50. At this time, the flexible layer (i.e., the second organic material layer 21) and the first organic material layer 50 form a structure like an inverted-convex shape, and the first rigid layer 10 and the second rigid layer 30 are respectively disposed on both sides of the convex portion of the structure.
When the flexible layer 20 has a single-layer structure, an adhesive layer may be used as the flexible layer 20. As shown in fig. 8A, the flexible layer 20 is a second adhesive layer 22. The second adhesive layer 22 is adhesively bonded to the first rigid layer 10 and the second rigid layer 30, respectively. The second adhesive layer 22 may also be an optical silicone. With reference to fig. 8A, in the structure shown in fig. 8A, the foldable display module further includes a first organic material layer 50, and the first organic material layer 50 is a layer structure made of a bendable material and has a better bending modulus, for example, 1 to 10 GPa. The first organic material layer 50 may be fixedly coupled to the second adhesive layer 22. Alternatively, as shown in fig. 8B, the first rigid layer 10, the second rigid layer 30, and the flexible layer 20 may be stacked on and fixedly connected to the first organic material layer 50. Specifically, the first organic material layer 50 is bonded to the first rigid layer 10, the second rigid layer 30, and the flexible layer (i.e., the second adhesive layer 22) through the third adhesive layer 40. In this case, the second adhesive layer 22 is directly connected to the first and second rigid layers 10 and 30, and the second adhesive layer 22 is indirectly connected to the first and second rigid layers 10 and 30 through the third adhesive layer 40 and the first organic material layer 50. In this case, the second adhesive layer 22 and the third adhesive layer 40 may be made of the same material, and both may be made of a common adhesive material such as transparent optical silica gel.
As an alternative, as shown in fig. 9, when the flexible layer employs the second adhesive layer 22, the second adhesive layer 22 may be of a unitary structure with the third adhesive layer 40. At this time, the flexible layer 20 (i.e., the second adhesive layer 22) and the third adhesive layer 40 form a structure like an inverted-convex letter, and the first rigid layer 10 and the second rigid layer 30 are respectively disposed on both sides of the convex portion of the structure.
As shown in fig. 10, the flexible layer 20 may take a multi-layer structure. The flexible layer 20 includes a first flexible layer 20a and a second flexible layer 20b, which are stacked, and the first flexible layer 20a and the second flexible layer 20b are connected. It should be understood that the above-described two-layer laminate structure is merely one specific example of the present application. When the flexible layer 20 has a multilayer structure, it may include not only the two-layer structure described above but also a structure having three, four, or more layers. The following description will be given taking a two-layer structure as an example. The flexible layer 20 includes a first flexible layer 20a and a second flexible layer 20 b. For example: the first flexible layer 20a is located above the second flexible layer 20b, i.e., the first flexible layer 20a is closer to the first organic material layer 50 or to the outside of the terminal. The first flexible layer 20a and the second flexible layer 20b may have the same stiffness or different stiffness, for example, the stiffness of the first flexible layer 20a is greater than the stiffness of the second flexible layer 20b, or the stiffness of the second flexible layer 20b is greater than the stiffness of the first flexible layer 20 a. Specifically, the stiffness of the first flexible layer 20a is greater than the stiffness of the second flexible layer 20 b. This first flexible layer 20a can adopt common materials such as glass, transparent ceramic, sapphire, and when adopting above-mentioned material, the thickness of first flexible layer 20a is thinner to when making to adopt glass, transparent ceramic or sapphire preparation to form, certain pliability and rigidity have been possessed simultaneously. And the second flexible layer 20b may be made of optical silica gel or an organic material as described above. When stacked, as shown in fig. 10, the first flexible layer 20a is adjacent to the first organic material layer 50, and the second flexible layer 20b is located on a side of the first flexible layer 20a facing away from the first organic material layer 50. In addition, the first flexible layer 20a and the second flexible layer 20b may or may not be connected to each other. For example, the first flexible layer 20a is adhesively bonded to the first rigid layer 10 and the second rigid layer 30, respectively, and the second flexible layer 20b is adhesively bonded to the first rigid layer 10 and the second rigid layer 30, respectively, but there is no bond between the first flexible layer 20a and the second flexible layer 20 b. Alternatively, the first flexible layer 20a may be connected to the second flexible layer 20b, such as by adhesive bonding.
The flexible layer 20 provided in the embodiment of the present application can be fixedly connected to the first rigid layer 10 and the second rigid layer 30 in different ways, so that the foldable display module forms an integral structure. Form collapsible display module assembly through the concatenation of different materials, correspond to different materials that adopt to different regions on the flexible screen 60. Fig. 3 is in the foldable display module of this application embodiment, and fig. 3 has improved the protection dynamics and the experience effect when touching-control to the foldable display module through adopting first rigid layer 10 and second rigid layer 30, and in addition, the flexible layer 20 is set up in the regional department of can buckling of flexible screen 60, is convenient for bend. Thereby make when guaranteeing collapsible display module assembly's rigidity strong, guaranteed collapsible display module assembly's bendability. And in the cover plate of the foldable display module, a first organic material layer 50 covering the first rigid layer 10, the second rigid layer 30 and the flexible layer 20; thereby make the outward appearance of collapsible display module assembly present structure as an organic whole, more level and smooth. The first organic material layer 50 can be relatively thin, since the first rigid layer 10, the second rigid layer 30 and the flexible layer 20 already protect the flexible screen.
In a specific embodiment, the refractive indexes of the first rigid layer 10 and the second rigid layer 30 may be the same, and the ratio of the refractive indexes of the first rigid layer 10 and the flexible layer 20 is between 0.9:1 and 1:0.9, such as: different refractive index ratios of 0.9:1, 1:0.9, etc. Therefore, when the splicing device is used by a client, the influence caused by gaps at the splicing position can be reduced.
Referring to fig. 3 and 11, the first rigid layer 10 and the second rigid layer 30 are respectively disposed on both sides of the flexible layer 20, and the first rigid layer 10, the flexible layer 20, and the second rigid layer 30 may be sequentially arranged to form a rectangular cover plate. The rectangle matches the shape of the flexible screen 60. When the flexible screen 60 has different shapes, such as a rectangle with rounded corners or a shape with two sides bent, the structures of the corresponding first rigid layer 10, the flexible layer 20 and the second rigid layer 30 are changed accordingly. Of course, the structure of the first organic material layer 50 may also be changed accordingly. As shown in fig. 11, when the edge of the flexible screen is arc-shaped, the edge of the cover plate is provided with an arc-shaped bending structure covering the edge of the flexible screen to cover the arc-shaped edge of the display screen. Thereby the flexible screen can be better protected. In which the edges of the first rigid layer 10 and the second rigid layer 30 are respectively bent, as shown in fig. 11 as a bend 11 of the first rigid layer 10 and a bend 31 of the second rigid layer 30, to protect the bendable region of the flexible screen.
In addition, this application embodiment still provides a mobile terminal, and this mobile terminal includes the collapsible display module assembly of any one above-mentioned. The terminal may also include a processor and a memory. The foldable display module and the memory are electrically connected with the processor respectively. The mobile terminal is foldable. When the mobile terminal is folded, the foldable display module is folded along with the mobile terminal. When the mobile terminal is unfolded, the foldable display module is unfolded along with the mobile terminal. When the foldable display module is folded, the bendable region of the foldable display module, the cover plate covering the bendable region and the touch layer are in a bent state. When the foldable display module is unfolded, the bendable region of the foldable display module, the cover plate covering the bendable region and the touch layer are in a flat state. The mobile terminal may adopt different folding manners, such as shown in fig. 12A and 12B. In which, when the mobile terminal shown in fig. 12A is folded, the housing 90 of the mobile terminal is exposed to the outside, and the foldable display module is folded to the inside without being exposed. As shown in fig. 12B, when the mobile terminal is folded, the foldable display module of the mobile terminal is exposed to the outside, and the case 90 is folded to the inside. In the foldable display module, when the cover plate is attached to the flexible screen 60, the first organic material layer 50 faces away from the flexible screen 60, and the first rigid layer 10, the second rigid layer 30 and the flexible layer 20 are located on a side facing the flexible screen 60. Specifically, the cover is located above the flexible screen 60, i.e., the cover is closer to the exterior of the handset than the flexible screen 60. In addition, for the touch layer (not shown in the figure) and the flexible screen 60, the touch layer may be located between the flexible screen 60 and the cover plate, or the flexible screen 60 is located between the cover plate and the touch layer, or the cover plate is located between the flexible screen 60 and the touch layer. At this time, the spliced cover plate can also comprise a complete layer; the complete layer may be a touch layer; it is also possible that there is only one protective layer and the touch layer is arranged below this protective layer or above or below the flexible screen 60.
And, because above-mentioned collapsible display module assembly adopts different materials concatenation preparation to first rigid layer 10 and the second rigid layer 30 through adopting have improved the protection dynamics of collapsible display module assembly, and the experience effect during the touch-control, in addition, flexible layer 20 through setting up corresponds the flexible region of can buckling of flexible screen 60, and the bending of flexible screen 60 of being convenient for has improved the performance of collapsible display module assembly.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall 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 (18)
1. A foldable display module is characterized by comprising a flexible screen, a touch layer and a cover plate; wherein the content of the first and second substances,
the flexible screen (60) comprises a first display area, a second display area and a bendable area which is connected with the first display area and the second display area;
the cover plate includes: a first rigid layer (10) covering the first display area, a second rigid layer (30) covering the second display area, and a flexible layer (20) covering the bendable area; and the flexible layer (20) is connected with the first rigid layer (10) and the second rigid layer (30) respectively;
the cover sheet further comprises a first organic material layer (50) covering the first rigid layer (10), the flexible layer (20) and the second rigid layer (30);
the touch layer (80) is arranged between the cover plate and the flexible screen (60) or on one side of the flexible screen (60) departing from the cover plate, or on one side of the cover plate departing from the flexible screen (60).
2. The foldable display module of claim 1, wherein the first organic material layer (50) is located on an inner side compared to the flexible screen (60) when the foldable display module is folded.
3. The foldable display module of claim 1 or 2, wherein the flexible layer (20) is a second layer (21) of organic material.
4. The foldable display module of claim 2, wherein the second organic material layer (21) is adhesively attached on opposite sides to the first rigid layer (10) and the second rigid layer (30) by a first adhesive layer (70), respectively.
5. The foldable display module of claim 1 or 2, wherein the flexible layer (20) is a second adhesive layer (22).
6. The foldable display module of any one of claims 1 to 5, wherein the flexible layer (20) comprises a first flexible layer (20a) and a second flexible layer (20b) stacked together.
7. The foldable display module of claim 6, wherein the first flexible layer (20a) is closer to the first organic material layer (50) than the second flexible layer (20b), the first flexible layer (20a) having a stiffness greater than a stiffness of the second flexible layer (20 b).
8. The foldable display module of any one of claims 1 to 7,
the first rigid layer (10) is any one of a glass layer, a transparent ceramic layer or a sapphire layer;
the second rigid layer (30) is any one of a glass layer, a transparent ceramic layer, or a sapphire layer.
9. The foldable display module of any one of claims 1 to 8, wherein the refractive indices of the first rigid layer (10) and the second rigid layer (30) are the same, and the ratio of the refractive indices of the first rigid layer (10) and the flexible layer (20) is between 0.9:1 and 1: 0.9.
10. The foldable display module according to any one of claims 1 to 9, wherein the edge of the flexible screen (60) is arc-shaped, and the edge of the cover plate is provided with an arc-shaped bending structure covering the edge of the flexible screen (60).
11. The foldable display module of any one of claims 1 to 10, wherein the first rigid layer (10), the second rigid layer (30) and the flexible layer (20) are respectively fixedly connected to the first organic material layer (50); and the flexible layer (20) is connected to the first rigid layer (10) and the second rigid layer (30) by the first organic material layer (50), respectively.
12. The foldable display module of claim 11, wherein the first organic material layer (50) is adhesively attached to the first rigid layer (10), the second rigid layer (30) and the flexible layer (20) by a third adhesive layer (40).
13. The foldable display module of claim 11 or 12, wherein the third adhesive layer (40) is a unitary structure with the second adhesive layer (22) when the flexible layer (20) is the second adhesive layer (22).
14. The foldable display module of claim 13, wherein the third adhesive layer (40) and the second adhesive layer (22) form a unitary structure having a cross-section that is convex.
15. The foldable display module of claim 11, wherein when the flexible layer (20) is a second organic material layer (21), the second organic material layer (21) is a unitary structure with the first organic material layer (50).
16. The foldable display module of claim 15, wherein the cross-section of the integral structure formed by the second organic material layer (21) and the first organic material layer (50) is convex.
17. The foldable display module of any one of claims 1 to 16, wherein the cover plate matches the shape of the flexible screen (60).
18. A mobile terminal, comprising the foldable display module of any one of claims 1 to 17, a processor and a memory; the foldable display module and the memory are electrically connected with the processor respectively;
the mobile terminal can be folded;
when the mobile terminal is folded, the foldable display module is folded along with the mobile terminal; when the mobile terminal is unfolded, the foldable display module is unfolded along with the mobile terminal;
when the foldable display module is folded, the bendable region of the foldable display module, the cover plate covering the bendable region and the touch layer are in a bent state;
when the foldable display module is unfolded, the bendable region of the foldable display module, the cover plate covering the bendable region and the touch layer are in a flat state.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811296673 | 2018-11-01 | ||
| CN2018112966730 | 2018-11-01 |
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| CN111131563A true CN111131563A (en) | 2020-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811647390.6A Pending CN111131563A (en) | 2018-11-01 | 2018-12-29 | Foldable display module and mobile terminal |
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Application publication date: 20200508 |