CN112785925A - Folding screen and folding display device - Google Patents
Folding screen and folding display device Download PDFInfo
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- CN112785925A CN112785925A CN202011628754.3A CN202011628754A CN112785925A CN 112785925 A CN112785925 A CN 112785925A CN 202011628754 A CN202011628754 A CN 202011628754A CN 112785925 A CN112785925 A CN 112785925A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/32—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from a charging set comprising a non-electric prime mover rotating at constant speed
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K35/00—Generators with reciprocating, oscillating or vibrating coil system, magnet, armature or other part of the magnetic circuit
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Abstract
The embodiment of the application provides a folding screen and folding display device, relates to and shows technical field, and this folding screen includes: the display device comprises a shell and a flexible display panel arranged in the shell; the folding screen is provided with a bending area for bending, the shell comprises two sub-shells, the two sub-shells are respectively positioned at two sides of the bending area, and the two sub-shells are connected through a connecting piece; the folding screen still includes: the electromagnetic coil and the permanent magnet are respectively arranged on the two sub-shells; when the folding screen is bent or unfolded, the electromagnetic coil and the permanent magnet move relatively, the permanent magnet is used for generating a magnetic field, the electromagnetic coil is used for cutting magnetic induction lines in the magnetic field and generating current, and the current is used for supplying power to the folding screen, so that the folding screen can realize the function of self-generation.
Description
Technical Field
The application relates to the technical field of display, in particular to a folding screen and a folding display device.
Background
As the screen of the electronic device is developing to be larger and larger, the resolution is higher and higher, and the frequency of using the electronic device by the user is usually very high, which results in very fast power consumption of the electronic device, the problem of power endurance of the electronic device becomes a concern.
For electronic equipment, further research is urgently needed if the problem of electric quantity endurance can be solved by a self-generating manner.
Disclosure of Invention
The embodiment of the application provides a folding screen and folding display device for through addding solenoid and permanent magnet, make folding screen folding with when expanding, can utilize the magnetic induction line in the magnetic field that the solenoid cut permanent magnet formed, thereby take place electromagnetic induction and produce electric current, realize the purpose from the electricity generation.
In order to achieve the purpose, the technical scheme is as follows:
in a first aspect, there is provided a folding screen comprising: the display device comprises a shell and a flexible display panel arranged in the shell; the folding screen is provided with a bending area for bending, the shell comprises two sub-shells, the two sub-shells are respectively positioned at two sides of the bending area, and the two sub-shells are rotatably connected; the folding screen further comprises: the electromagnetic coil and the permanent magnet are respectively arranged on the two sub-shells; when the folding screen is bent or unfolded, the electromagnetic coil and the permanent magnet move relatively, the permanent magnet is used for generating a magnetic field, the electromagnetic coil is used for cutting magnetic induction lines in the magnetic field and generating current, and the current is used for supplying power to the folding screen.
The embodiment of the application provides a folding screen, through add solenoid and permanent magnet respectively on two shells at protection flexible display panel, make folding screen at the folding in-process with the expansion, solenoid and permanent magnet can be along with flexible display panel's deformation and motion, and the in-process solenoid that moves can cut the magnetic induction line in the magnetic field that the permanent magnet formed, thereby take place electromagnetic induction and produce electric current, supply power for folding screen again with this electric current, realize the purpose from the electricity generation, in order to solve folding electronic equipment's electric quantity continuation of the journey problem.
With reference to the first aspect, as a possible implementation manner, the electromagnetic coil and the permanent magnet are disposed between the housing and the flexible display panel, or the electromagnetic coil and the permanent magnet are disposed on a side of the housing away from the flexible display panel.
With reference to the first aspect, as a possible implementation manner, when the folding screen is in a folded state, the electromagnetic coil and the permanent magnet are located at different layers in the thickness direction, and the folded state is used for indicating the posture of the folding screen when orthographic projections of the two sub-housings are overlapped.
With reference to the first aspect, as a possible implementation manner, the electromagnetic coil includes at least one wire, and the permanent magnet includes at least one magnetic stripe; when the folding screen is in the folding state, the electromagnetic coil and the permanent magnet are located on the same layer in the thickness direction, and the magnetic strip is located in a gap between the wires. In this implementation, since the permanent magnet usually generates the strongest magnetic field at the edge, when the folded magnetic strip is located in the gap between the conducting wires, the magnetic induction wire at the position where the magnetic field is strongest can be cut for the conducting wires, and the generated current is strongest.
With reference to the first aspect, as a possible implementation manner, the conductive wire is rotated around a rotation center to be in a spiral shape, or the conductive wire extends in a first direction parallel to the sub-housing and is bent in the first direction.
With reference to the first aspect, as one possible implementation manner, the cross section of the wire is a rectangular cross section.
With reference to the first aspect, as a possible implementation manner, the foldable screen further includes an electrode connected to the wire, where the electrode is configured to receive a current on the wire.
With reference to the first aspect, as a possible implementation manner, the thickness of the electromagnetic coil and the thickness of the permanent magnet are both 0.5 μm to 1000 μm.
With reference to the first aspect, as a possible implementation manner, the two sub-housings are rotatably connected to each other, and include: the two sub-shells are connected through a connecting piece, wherein the connecting piece is at least one of a hinge and a spring.
In a second aspect, there is provided a folding display device comprising: a battery and a folding screen as provided in the first aspect or any possible implementation manner of the first aspect, wherein the battery is connected to an electrode in the folding screen and is used for storing current received by the electrode and supplying power to the folding screen.
The embodiment of the application provides a folding screen and folding display device, through add solenoid and permanent magnet respectively on two shells at protection flexible display panel, make folding screen at the folding in-process with the expansion, solenoid and permanent magnet can be along with flexible display panel's deformation and motion, and can cut the magnetic induction line in the magnetic field that the permanent magnet formed at the in-process solenoid of motion, thereby take place electromagnetic induction and produce electric current, supply power for folding screen again with this electric current, realize the purpose from the electricity generation, in order to solve folding electronic equipment's electric quantity continuation of the journey problem.
Drawings
Fig. 1 is a schematic structural diagram of a folding screen provided in an embodiment of the present application;
FIG. 2 is a schematic cross-sectional view of the folding screen shown in FIG. 1;
FIG. 3 is a schematic cross-sectional view of another folding screen provided by embodiments of the present application;
FIG. 4 is a schematic top view of an electromagnetic coil and permanent magnet provided by an embodiment of the present application;
FIG. 5 is a schematic top view of another electromagnetic coil and permanent magnet provided by an embodiment of the present application;
FIG. 6 is a schematic diagram of the direction of the magnetic field generated by a magnetic stripe provided by an embodiment of the present application;
FIG. 7 is a schematic cross-sectional view of an electromagnetic coil and permanent magnet provided by an embodiment of the present application;
fig. 8 is a schematic structural diagram of a foldable display device according to an embodiment of the present application.
Reference numerals:
1-folding the display device; 2-folding the screen; 3-a battery; 10-a housing; 11-a sub-shell; 20-a flexible display panel; 30-a connector; 31-a spring; 41-an electromagnetic coil; 42-a permanent magnet; 410-a wire; 420-a magnetic strip; 50-electrodes; 100-bending zone.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art. The terms "first," "second," and the like as used in the description and in the claims of the present application do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present application, "a plurality" means two or more unless otherwise specified.
The directional terms "left", "right", "upper" and "lower" are defined with respect to the orientation in which the display assembly is schematically placed in the drawings, and it is to be understood that these directional terms are relative concepts, which are used for descriptive and clarifying purposes, and may be changed accordingly according to the change of the orientation in which the array substrate or the display device is placed.
Embodiments of the present application provide a foldable screen, which may be applied to various electronic devices (i.e., foldable display screens), which may also be referred to as "foldable electronic devices" or "foldable screen devices".
It should be understood that foldable display screen in electronic equipment may adopt an integrated into one piece's flexible display screen, also may adopt a plurality of flexible display screens and the concatenation display screen that is located the connecting piece between per two flexible display screens and constitutes, also may adopt a plurality of rigid display screens and the concatenation display screen that is located a flexible display screen between per two rigid display screens and constitutes, or, may also adopt a plurality of rigid display screens and the concatenation display screen that is located the connecting piece between per two rigid display screens and constitutes etc., foldable display screen's concrete constitution can set up as required in electronic equipment, this application embodiment does not carry out special restriction to this.
It should be understood that the electronic device with a foldable display screen may be a variety of different types of electronic devices, such as smart phones, tablets, e-readers, in-vehicle computers, navigators, digital cameras, smart televisions, and smart wearable devices, for example. The folding screen provided by the embodiment of the application has a very wide application prospect.
The folding screen provided by the embodiment of the application can increase the area for displaying on the electronic equipment to a great extent, and enables a user to have better visual experience.
In the prior art, as the screen of the electronic device is developed to be larger and larger in size and higher in resolution, and the frequency of using the electronic device by a user is usually very high, the power consumption of the electronic device is very fast, and therefore, the problem of power endurance of the electronic device becomes a problem of great concern.
In order to solve the problem of electric quantity endurance, some manufacturers focus on increasing or optimizing the battery capacity, but in this way, the increase or optimization of the battery capacity is limited; other manufacturers propose that the heat generated by the electronic device during operation can be converted into electric energy by adding a thermoelectric conversion device, so as to perform self-charging and increase the endurance of the battery, but in this way, the energy conversion rate is very low, and the method is completely impossible to realize if the electronic device is in a low-temperature environment.
In addition, if there are other self-generating ways to solve the problem of electric quantity endurance of the electronic device, further research is urgently needed.
In view of this, the embodiment of the present application provides a foldable screen, which is provided with an electromagnetic coil and a permanent magnet, so that when the foldable screen is folded and unfolded, the electromagnetic coil can be used to cut magnetic induction lines in a magnetic field formed by the permanent magnet, thereby generating electromagnetic induction to generate current, and achieving the purpose of self-generating electricity, so as to solve the problem of electric quantity endurance of a foldable electronic device.
The structure of the folding screen provided by the embodiment of the present application is described in detail below with reference to fig. 1 to 6.
Taking the case that the foldable screen includes an integrally formed flexible display panel, the foldable screen may be an outward folded screen (the light emitting surface of the flexible display panel is outside the foldable screen after being bent) or an inward folded screen (the light emitting surface of the flexible display panel is inside the foldable screen after being bent). The embodiment of the present application will be described by taking an integrally formed foldable screen as an example.
Fig. 1 shows a schematic structural diagram of a folding screen provided in an embodiment of the present application. Fig. 1 (a) is a schematic top view of the folding screen in a flattened state, and fig. 1 (b) is a schematic top view of the folding screen in a folded state.
Fig. 2 is a schematic cross-sectional view of the folding screen shown in fig. 1. Fig. 2 (a) is a schematic cross-sectional view of the folded screen in the AA 'direction in the unfolded state shown in fig. 1 (a), and fig. 2 (b) is a schematic cross-sectional view of the folded screen in the BB' direction shown in fig. 1 (b).
It should be understood that the unfolded state is used to indicate the posture or configuration of the folded screen after it is completely unfolded, i.e. the unfolded state can be understood as the completely unfolded state. When the folding screen is in a flat state, the light emergent surfaces of all the display areas are positioned on the same plane. The folded state is used to indicate a posture or form that the folded screen forms when the deformation is maximum after being folded, i.e., a fully folded state can be understood. When the folding screen is in a folding state, the light-emitting surfaces between the non-bending display areas are opposite or back to back.
It should be understood that the change of the folding screen from the flat state to the folded state is called a process of folding, and the change from the folded state to the flat state is called a process of flattening, wherein the process of flattening and the process of folding are reciprocal processes.
As shown in fig. 1 and fig. 2, the folding screen 2 provided in the embodiment of the present application includes: a housing 10, a flexible display panel 20 disposed in the housing 10.
It should be understood that the flexible display panel 20 may be, for example, an Organic Light Emitting Diode (OLED) display panel, or a Micro Light Emitting Diode (Micro LED) display panel, or a Quantum Dot Light Emitting Diode (QLED) display panel. The kind of the flexible display panel 20 may be changed as needed, and the embodiment of the present application does not limit this.
Taking the light emitting direction of the flexible display panel 20 as top emission as an example, when the light emitting surface of the flexible display panel 20 is on top, the housing 10 is disposed under the light emitting surface far away from the flexible display panel 20. In order to protect the periphery of the flexible display panel 20, the housing 10 may be a U-shaped housing, that is, the cross section of the housing 10 may be a U-shaped cross section, and in this case, the flexible display panel 20 should be disposed in the U-shaped structure of the housing 10.
The folding screen 2 provided by the embodiment of the application has a bending area 100 for bending.
The housing 10 includes two sub-housings 11, the two sub-housings 11 are respectively located at two sides of the bending region 100, and the two sub-housings 11 are rotatably connected.
Illustratively, as shown in fig. 1 and 2, the bending region 100 is located at the center of the folding screen 2 and has a rectangular shape. Wherein the midline of the bending zone 100 is the bending axis of the folded screen 2 (line indicated by k in fig. 1), and the folded screen 2 is symmetrical about the bending axis k. It should be understood that the flexible display panel 20 located in the bending region 100 may be deformed as it is bent.
Based on the folded screen 2, which is symmetrical about the bending axis k, the housing 10 includes two sub-housings 11, which are located on both sides of the bending region 100, respectively, and have the same structure and are symmetrical about the bending axis k. The two sub-housings 11 may be generally rigid housings for supporting and protecting the flexible display panel 20.
It should be understood that, during the process of folding or unfolding the foldable screen 2, the two sub-housings 11 can rotate around the folding axis k as a rotation axis, and when the positions of the two sub-housings 11 change, the flexible display panel 20 will deform along with the change of the two sub-housings 11, so as to realize the unfolding process of the foldable screen 2 from the folded state to the unfolded state, or realize the folding process of the foldable screen 2 from the unfolded state to the folded state.
Optionally, as a possible implementation manner, the two sub-housings 11 are rotatably connected, and include: the two sub-housings 11 may be connected by a connecting member 30.
Wherein, the connecting member 30 may be at least one of a hinge, a spring, and a gear.
Illustratively, where the connector 30 is a hinge, the hinge extends in the same direction as the bend axis. When the connecting member 30 is a spring, the expansion direction of the spring is perpendicular to the direction of the bending axis.
It should be understood that the above description is only a few examples of the connecting element 30, the connecting element 30 may also be other components, or a combination of several components, and the structure of the connecting element 30 may be specifically configured as required, which is not limited in any way by the embodiments of the present application.
Taking the connecting member 30 as the spring 31 as an example, as shown in fig. 1 and fig. 2, when two sub-housings 11 are located at the left and right sides of the bending region 100, the left sub-housing 11 can be bent from left to right and bent to the back of the right sub-housing 11, and the length of the folding screen 2 in the folded state after bending is reduced by half.
In addition, if the bending axis extends along the horizontal direction, the two sub-housings 11 are located at the upper and lower sides of the bending area 100, the upper sub-housing 11 can be bent from top to bottom and bent to the back of the lower sub-housing 11, and the width of the foldable screen 2 in the folded state after bending is reduced by half.
Optionally, as another possible implementation, the rotationally connecting the two sub-housings 11 includes: the two sub-housings 11 are connected by a flexible connection.
It is to be understood that the flexible connection is a flexible component that can be repeatedly bent and unfolded.
When the flexible connection portion is provided between the two sub-housings 11, the two sub-housings 11 and the flexible connection portion may be configured as an integrally formed structure, or may be configured as a split structure, and thus, the flexible connection portion may be deformed to fold or unfold the two sub-housings 11.
The folding screen 2 that this application embodiment provided still includes: the electromagnetic coil 41 and the permanent magnet 42, and the electromagnetic coil 41 and the permanent magnet 42 are respectively disposed on the two sub-housings 11.
Illustratively, as shown in fig. 1 and 2, when two sub-housings 11 are located at the left and right sides of the bending region 100, the electromagnetic coil 41 and the permanent magnet 42 are respectively disposed on the two sub-housings 11, that is, the electromagnetic coil 41 and the permanent magnet 42 are respectively disposed at the left and right sides of the bending region 100. For example, the electromagnetic coil 41 is located on the left side and the permanent magnet 42 is located on the right side. Alternatively, the electromagnetic coil 41 is located on the right side and the permanent magnet 42 is located on the left side.
Based on this, the electromagnetic coil 41 and the permanent magnet 42 may be respectively disposed at the center positions of the corresponding sub-housings 11. It should be understood that the electromagnetic coils 41 and the permanent magnets 42 respectively provided on the two sub-housings 11 may be changed according to the position change of the two sub-housings 11.
Alternatively, as a possible embodiment, the electromagnetic coil 41 and the permanent magnet 42 are disposed between the housing 10 and the flexible display panel 20, or the electromagnetic coil 41 and the permanent magnet 42 are disposed on a side of the housing 10 away from the flexible display panel 20.
Illustratively, as shown in fig. 2, the electromagnetic coil 41 is disposed on a side of the left sub-housing 11 away from the flexible display panel 20, and the permanent magnet 42 is disposed on a side of the right sub-housing 11 away from the flexible display panel 20. Alternatively, the electromagnetic coil 41 may be disposed between the left sub-housing 11 and the flexible display panel 20, and the permanent magnet 42 may be disposed between the right sub-housing 11 and the flexible display panel 20.
In addition, the setting mode can also be as follows: the electromagnetic coil 41 is disposed on the side of the left sub-housing 11 away from the flexible display panel 20, and the permanent magnet 42 is disposed between the right sub-housing 11 and the flexible display panel 20, or the electromagnetic coil 41 may be disposed between the left sub-housing 11 and the flexible display panel 20, and the permanent magnet 42 is disposed on the side of the right sub-housing 11 away from the flexible display panel 20. In addition, in order to improve the compactness of the foldable screen 2 and facilitate the use of the user, a receiving groove may be formed on the side of the sub-housing 11 away from the flexible display panel 20 to receive the electromagnetic coil 41 and the permanent magnet 42, so that the electromagnetic coil 41 and the permanent magnet 42 are not exposed to the outside of the surface of the sub-housing 11. The positions of the electromagnetic coil 41 and the permanent magnet 42 may be set as required, and the embodiment of the present application does not set any limitation.
When the folding screen 2 is bent or unfolded, the electromagnetic coil 41 and the permanent magnet 42 move relatively, the permanent magnet 42 is used for generating a magnetic field, the electromagnetic coil 41 is used for cutting magnetic induction lines in the magnetic field and generating current, and the current is used for supplying power to the folding screen 2.
It will be appreciated that when the folding screen 2 is folded, a relatively close movement of the electromagnetic coil 41 and the permanent magnet 42 occurs. When the folding screen 2 is unfolded, a relatively distant movement of the electromagnetic coil 41 and the permanent magnet 42 takes place.
It will be appreciated that the lines of magnetic induction in the magnetic field generated by the permanent magnet 42 are either parallel or perpendicular to the bend axis. When the magnetic induction lines in the magnetic field generated by the permanent magnet 42 are perpendicular to the bending axis, the electromagnetic coil 41 will cut the magnetic induction lines in the magnetic field when moving along with the sub-housing 11, and electromagnetic induction occurs, so as to generate current, and realize conversion from mechanical energy to electrical energy.
The embodiment of the application provides a folding screen, through add solenoid and permanent magnet respectively on two shells at protection flexible display panel, make folding screen at the folding in-process with the expansion, solenoid and permanent magnet can be along with flexible display panel's deformation and motion, and the in-process solenoid that moves can cut the magnetic induction line in the magnetic field that the permanent magnet formed, thereby take place electromagnetic induction and produce electric current, supply power for folding screen again with this electric current, realize the purpose from the electricity generation, in order to solve folding electronic equipment's electric quantity continuation of the journey problem.
The following further describes the two cases when the folding screen is in the folded state.
Alternatively, as a possible implementation manner, when the folding screen is in a folded state, the electromagnetic coil and the permanent magnet are located at different layers in the thickness direction, and the folded state is used for indicating the state of the folding screen when orthographic projections of the two sub-housings are overlapped.
Illustratively, as shown in fig. 2, when the folding screen 2 is changed from the flat-out state to the folded state, the orthogonal projections of the electromagnetic coil 41 and the permanent magnet 42 are changed from non-overlapping to overlapping in the thickness direction.
When the folding screen 2 is in the folded state, that is, when the orthographic projections of the two sub-housings 11 coincide, the electromagnetic coil 41 and the permanent magnet 42 are located in different layers in the thickness direction, for example, (b) in fig. 2, and the electromagnetic coil 41 and the permanent magnet 42 are in two adjacent layers in the thickness direction.
The electromagnetic coil 41 may include at least one conductive wire 410, and the permanent magnet 42 may be a whole layer or a partial layer, or may include a plurality of magnetic strips 420. The area of the electromagnetic coil 41 may be the same as or different from the area of the permanent magnet 42, which is not limited in this embodiment.
Alternatively, as another possible implementation manner, if the electromagnetic coil 41 includes at least one wire 410 and the permanent magnet 42 includes at least one magnetic strip 420, when the folding screen 2 is in the folded state, the electromagnetic coil 41 and the permanent magnet 42 are located in the same layer in the thickness direction, and the magnetic strips 420 are located in the gaps between the wires 410.
For example, fig. 3 shows a schematic structural diagram of another folding screen 2, as shown in fig. 3, when the folding screen 2 is in a folded state, that is, when orthographic projections of two sub-housings 11 coincide, the electromagnetic coil 41 and the permanent magnet 42 are located on the same layer in the thickness direction, for example, (b) in fig. 3, and the electromagnetic coil 41 and the permanent magnet 42 are combined into one layer by two layers.
Since the magnetic field of each magnetic stripe 420 in the permanent magnet 42 is strongest at its edge, when the folded screen 2 is folded and the magnetic stripes 420 are located in the gaps between the conducting wires 410, the motion track of the cut magnetic induction lines is longest and the cut magnetic induction lines are strongest, so that the generated current is stronger.
Alternatively, in the above two implementations, the arrangement of the conducting wires 410 in the electromagnetic coil 41 may be: the wire 410 is rotated in a spiral shape around the rotation center, or the wire 410 extends in a first direction parallel to the sub-housing 11 and is bent in the first direction.
Exemplarily, fig. 4 is a schematic top view of an electromagnetic coil 41 and a permanent magnet 42 provided in an embodiment of the present application, and fig. 5 is a schematic top view of another electromagnetic coil 41 and a permanent magnet 42 provided in an embodiment of the present application.
As shown in fig. 4 and 5, taking the electromagnetic coil 41 including one wire 410 as an example, as shown in fig. 4 (a), the wire 410 may be rotated in a spiral shape in a single line form around a rotation center (e.g., point P); alternatively, as shown in fig. 4 (b), the wire 410 may be rotated in a double line form around the rotation center P into a spiral shape; alternatively, as shown in fig. 5 (a), the wire 410 may extend in a single line form along a first direction (e.g., x direction) parallel to the sub-housing 11 and be bent in the first direction; alternatively, as shown in fig. 5 (b), the wire 410 may also extend in a double line form along a first direction (e.g., x direction) parallel to the sub-housing 11 and be bent in the first direction. The two ends of the wire 410 in the double wire form are closer to the peripheral area of the sub-housing 11, as compared to the single wire form, and it is easier to conduct current when designing a circuit.
Thus, when the folding screen 2 is in the folded state, the electromagnetic coil 41 and the permanent magnet 42 are located in the same layer in the thickness direction, and the magnetic stripe 420 is located in the gap between the conductive wires 410, which means that the magnetic stripe 420 is located in the gap between the adjacent conductive wire segments as shown in fig. 4 (a) and 5 (a), or the magnetic stripe 420 is located in the gap between the adjacent two sets of conductive wire segments as one set of two conductive wire segments as shown in fig. 4 (b) and 5 (b). Because the magnetic field is strongest at the edges of the magnetic strip 420, the placement of the magnetic strip 420 in the gap between adjacent wire segments may allow more of the wires 410 to cut the magnetically sensitive wires in the magnetic field, resulting in a stronger current flow, relative to the placement of the magnetic strip 420 in the gap between adjacent sets of wire segments.
In combination with the above, as shown in fig. 4, the magnetic strip 420 included in the permanent magnet 42 may be one piece, as shown in fig. 5, the permanent magnet 42 may also include a plurality of separate magnetic strips 420, and as shown in fig. 5 (a), the plurality of magnetic strips 420 are uniformly arranged along the y direction perpendicular to the first direction. At this time, the direction of the magnetic field generated by the magnetic stripe 420 is as shown in fig. 6, and the magnetic fields are strongest at the left and right sides of the magnetic stripe 420 as shown in fig. 6.
Optionally, the cross-section of the wire 410 is rectangular in cross-section, as may be realized. It is understood that the material of the wire 410 may be a conductive metal such as silver, copper, aluminum, etc. The wire 410 may be sputtered from a conductive metal target onto the sub-housing 11 to form a planar coil pattern.
Besides, the cross-sectional shape of the wire 410 may also be other shapes such as a trapezoid, which may be specifically selected according to the needs, and the embodiment of the present application does not limit this.
It should be understood that the material of the permanent magnet 42 may be an alnico permanent magnet alloy, an iron-chromium-cobalt permanent magnet alloy, a permanent magnetic ferrite, a rare earth-cobalt permanent magnet material, a neodymium-iron-boron permanent magnet material, or the like, to spontaneously generate a magnetic field. The permanent magnet 42 is formed as a thin film from a permanent magnet material powder.
When folding screen 2 is in folding state, magnetic stripe 420 is arranged in the clearance between wire 410, and is corresponding, magnetic stripe 420's cross section also can be rectangle, trapezoidal isotypic, and specific shape can be selected as required, and this application embodiment does not carry out any restriction to this.
Based on this, it should be understood that when the cross-sections of the wires 410 and the magnetic strips 420 are both rectangular, and the magnetic strips 420 are positioned in the gaps between the wires 410, as shown in fig. 3, the cross-sectional width of the magnetic strips 420 may be less than or equal to the gap distance between the wires 410; alternatively, as shown in FIG. 7, when the cross-sections of the wire 410 and the magnetic strip 420 are both trapezoidal, the width of the bottom edge of the cross-section of the magnetic strip 420 may be less than or equal to the gap distance between the top edges of the cross-section of the wire 410 when the magnetic strip 420 is positioned in the gap between the wires 410.
Optionally, the thickness of the electromagnetic coil 41 and the thickness of the permanent magnet 42 both have a value in a range of 0.5 μm to 1000 μm.
It should be understood that the thickness of the electromagnetic coil 41 and the thickness of the permanent magnet 42 may be the same or different, and the specific thickness may be set according to the requirement, which is not limited in any way by the embodiment of the present application.
For traditional electromagnetic induction device, for example, traditional electromagnetic induction device forms relative motion for actual copper coil and magnet in space, and the electromagnetic induction device needs to have certain thickness, is centimeter-level thickness generally, and solenoid 41 and the thickness of permanent magnet 42 that this application embodiment provided are micron order thickness, can carry on frivolous folding display device 1, and application scope is wider.
Optionally, the folding screen 2 further comprises an electrode 50 connected to the wire 410, the electrode 50 being adapted to receive a current on the wire 410.
It is understood that the electrode 50 may be a metal of the same material as the wire 410. The electrode 50, the lead 410 and the permanent magnet 42 constitute a self-generating component, and when the folding screen is folded or unfolded, current is generated by cutting the magnetic induction lines and is collected by the electrode 50, so that the current can be utilized later.
Illustratively, when the cross sections of the wires 410 and the magnetic strips 420 are rectangular, the width of the cross section of the wires 410 is 5um to 1000um, the distance between the wires 410 is 10um to 1000um, and the number of turns is 50 to 3000. The magnetic stripe 420 produced a saturation magnetization of 83.5emu/g, a remanence of 46.7emu/g, and a coercivity of 763 Oe. Based on this, at a bending frequency of 2Hz to 10Hz, electric charges are collected by the electrode 50, and the power generation voltage is 2.3V to 7.8V.
The structure of the foldable screen 2 provided in the embodiment of the present application is explained above, and the foldable display device 1 including the foldable screen 2 is explained below based on the foldable screen 2.
Fig. 8 shows that the embodiment of the present application provides a folding display device 1.
The embodiment of the present application further provides a foldable display device 1, as shown in fig. 8, including: battery 3 and folding screen 2 as described in the embodiments of this application, battery 3 is connected with electrode 50 in folding screen 2 for storing the current received by electrode 50 and supplying power to folding screen 2.
It will be appreciated that when the foldable display device 1 comprises other electrical components, the current generated by the foldable screen 2 may also power the other components.
It should be understood that the foldable display device 1 may be an electronic apparatus as described in the embodiments of the present application.
The folding display device provided by the embodiment of the application comprises a folding screen and a battery. In the folding screen, through add solenoid and permanent magnet respectively on two shells at protection flexible display panel, make the folding screen at the folding in-process with the expansion, solenoid and permanent magnet can be along with flexible display panel's deformation and motion, and can cut the magnetic induction line in the magnetic field that the permanent magnet formed at the in-process solenoid of motion, thereby take place electromagnetic induction and produce electric current, supply power for the folding screen again with this electric current, realize the purpose from the electricity generation, in order to solve folding electronic equipment's electric quantity continuation of the journey problem.
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 (10)
1. A folding screen, comprising: the display device comprises a shell and a flexible display panel arranged in the shell;
the folding screen is provided with a bending area for bending, the shell comprises two sub-shells, the two sub-shells are respectively positioned at two sides of the bending area, and the two sub-shells are rotatably connected;
the folding screen further comprises: the electromagnetic coil and the permanent magnet are respectively arranged on the two sub-shells;
when the folding screen is bent or unfolded, the electromagnetic coil and the permanent magnet move relatively, the permanent magnet is used for generating a magnetic field, the electromagnetic coil is used for cutting magnetic induction lines in the magnetic field and generating current, and the current is used for supplying power to the folding screen.
2. A foldable screen as recited in claim 1, wherein the electromagnetic coil and the permanent magnet are disposed between the housing and the flexible display panel, or the electromagnetic coil and the permanent magnet are disposed on a side of the housing remote from the flexible display panel.
3. A folding screen according to claim 2,
when the folding screen is in a folded state, the electromagnetic coil and the permanent magnet are located on different layers in the thickness direction, and the folded state is used for indicating the posture of the folding screen when orthographic projections of the two sub-shells are overlapped.
4. A folding screen as recited in claim 2, wherein the electromagnetic coil comprises at least one wire and the permanent magnet comprises at least one magnetic strip;
when the folding screen is in the folding state, the electromagnetic coil and the permanent magnet are located on the same layer in the thickness direction, and the magnetic strip is located in a gap between the wires.
5. A folding screen as claimed in claim 4 wherein the wires are rotated about a center of rotation into a spiral shape or the wires extend in a first direction parallel to the sub-housings and are bent in the first direction.
6. A folding screen as claimed in claim 5 wherein the wires are rectangular in cross-section.
7. The folded screen of claim 6, further comprising an electrode connected to the wire, the electrode configured to receive current on the wire.
8. The folding screen of claim 2, wherein the thickness of the electromagnetic coil and the thickness of the permanent magnet correspond to a range of 0.5-1000 μm.
9. A folding screen as recited in claim 1, wherein the two sub-housings are rotatably coupled comprising: the two sub-shells are connected through a connecting piece, wherein the connecting piece is at least one of a hinge and a spring.
10. A foldable display device, comprising: a battery and a foldable screen according to any one of claims 1 to 9, the battery being connected to electrodes in the foldable screen for storing current received by the electrodes and for powering the foldable screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202011628754.3A CN112785925A (en) | 2020-12-30 | 2020-12-30 | Folding screen and folding display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011628754.3A CN112785925A (en) | 2020-12-30 | 2020-12-30 | Folding screen and folding display device |
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| CN112785925A true CN112785925A (en) | 2021-05-11 |
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| CN202011628754.3A Pending CN112785925A (en) | 2020-12-30 | 2020-12-30 | Folding screen and folding display device |
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Application publication date: 20210511 |