WO2020077524A1 - Display panel and control method therefor, and display device - Google Patents

Abstract

A display panel (10), comprising a light-emitting device (100) and a support film (200). The support film (200) comprises a first deformation body (210) and a second deformation body (220); under a first condition, the first deformation body (210) is softened and the second deformation body (220) is deformed to change the support film (200) from a first form to a second form; the support film (200) after the deformation is completed remains in the second form under a second condition; and under a third condition, the first deformation body (210) is restored from the deformed state to an original memory shape so that the support film (200) is restored from the second form to the first form. Also provided are a control method for the display panel (10) and a display device (20). The support film (200) in the provided display panel (10) achieves spontaneous deformation by means of the second deformation body (220), and achieves spontaneous recovery by means of the first deformation body (210) so as to achieve a two-way shape change process, thereby achieving the spontaneous deformation and spontaneous recovery of the entire display panel (10).

Description

Display panel and its control method and display device Technical field

The invention belongs to the field of display technology, and particularly relates to a display panel, a control method thereof, and a display device.

Background technique

Organic electroluminescence display technology has the advantages of self-luminescence, wide viewing angle, high contrast, low power consumption, and high response speed. The flexible display panel is a flexible and flexible display device made of a soft material, which has the characteristics of low power consumption, small size and direct visual flexibility. The application of flexible organic electroluminescence display technology combined with portable electronic devices, pens and touch input devices has broad market prospects. At present, if the flexible display panel is to be bent and deformed, an external force needs to be applied to it. The application of the external force must be manual to affect the user's experience, or adopt a mechanical control structure to increase the volume and weight of the display.

Summary of the invention

In view of this, the present invention provides a display panel that can realize spontaneous deformation without resorting to external force.

The present invention provides a display panel. The display panel includes:

Light emitting device

A supporting film, the light emitting device is provided on one side of the supporting film;

The support membrane includes a first deformable body and a second deformable body, the first deformable body has an initial memory shape so that the support membrane has a first form; under a first condition, the first deformable body softens And the second deformable body is deformed to change the support film from the first form to the second form; the support film after the deformation is maintained in the second form under the second condition; under the third condition, the The first deformable body is restored from the deformed state to the initial memory shape to restore the support membrane from the second form to the first form.

Preferably, the first deformable body includes at least one of a heat-induced shape memory polymer, an electro-induced shape memory polymer, a photo-induced shape memory polymer, a chemosensory shape memory polymer and a shape memory alloy The second deformable body includes at least one of a heat-induced shape memory polymer, an electro-induced shape memory polymer, a photo-induced shape memory polymer, a chemically-inducible shape memory polymer, and a shape memory alloy.

Preferably, when the first deformable body is a thermo-induced shape memory polymer, the second deformable body is an electro-induced shape memory polymer, and the electro-induced shape memory polymer is a conductive polymer;

The first condition includes heating the first deformed body to a first transition temperature, the first deformed body is softened at the first transition temperature, and the first transition temperature is greater than that of the first deformed body Softening temperature; the first condition further includes providing a preset voltage to the second deformable body to deform the second deformable body to change the support film from the first form to the second form.

Preferably, the second condition includes first withdrawing the heating condition from the first deformable body and maintaining a preset voltage to the second deformable body to shape the support film, and then to the second deformable body The deformed body withdraws the preset voltage to keep the support film in the second form.

Preferably, the third condition includes heating the first deformable body to a temperature above the first transition temperature, and the first deformable body is restored from the deformed state to the initial memory shape so that the support film is moved from the The second form returns to the first form.

Preferably, when the first deformable body is a heat-induced shape memory polymer and the second deformable body is a shape memory alloy; the first condition includes heating the support film to a second transition temperature, so The second transformation temperature is greater than the austenite transformation end temperature of the shape memory alloy, and the austenite transformation end temperature of the shape memory alloy is greater than the softening temperature of the first deformation body, and the second deformation body occurs Deformation to change the support film from the first form to the second form.

Preferably, the shape memory alloy has a deformed memory shape, so that the shape memory alloy deforms to the deformed memory shape when heated to the second transition temperature.

Preferably, the second condition includes heating the support film to maintain a temperature above the softening temperature of the first deformable body, so that the support film maintains the second form.

Preferably, the third condition includes cooling the support film to a third transition temperature, the third transition temperature is less than the softening temperature of the first deformation body, and the first deformation body recovers from the deformation state to all The initial shape to restore the support film from the second form to the first form.

Preferably, the support film includes a first deformation layer composed of the first deformation body and a second deformation layer composed of the second deformation body, the first deformation layer is provided on the second deformation layer on the surface.

Preferably, the support film includes a first deformation layer and a third deformation layer composed of the first deformation body and a second deformation layer composed of the second deformation body, and the second deformation layer is interposed between Between the first deformed layer and the third deformed layer.

Preferably, the display panel further includes:

A substrate, the substrate is provided on a surface of the support film, and the light emitting device is provided on a surface of the substrate away from the support film;

An encapsulation layer, the encapsulation layer is provided on a side of the light emitting device away from the substrate;

A polarizer, the polarizer is disposed on a side of the encapsulation layer away from the light emitting device;

A cover plate, the cover plate is disposed on a side of the polarizer away from the encapsulation layer.

The present invention also provides a display device including the display panel according to any one of the above.

The present invention also provides a control method of a display panel. The display panel includes a light emitting device and a supporting film. The light emitting device is disposed on one side of the supporting film. The supporting film includes a first deformable body and a second deformable body. Body, the first deformable body has an initial memory shape so that the support film has a first shape;

The control method of the display panel includes:

Applying a first condition to the support film to soften the first deformable body and deform the second deformable body to change the support film from the first form to the second form;

Applying a second condition to the support film after the deformation to maintain the support film in the second form;

A third condition is applied to the support film to restore the first deformed body from the deformed state to the initial memory shape to restore the support film from the second form to the first form.

Preferably, when the first deformable body is a thermo-induced shape memory polymer, the second deformable body is an electro-induced shape memory polymer, and the electro-induced shape memory polymer is a conductive polymer; The "applying a first condition to the support film to soften the first deformable body and deform the second deformable body to change the support film from the first form to the second form" includes:

Heating the first deformed body to a first transition temperature, the first deformed body is softened at the first transition temperature, and the first transition temperature is greater than the softening temperature of the first deformed body;

A preset voltage is provided to the second deformable body to deform the second deformable body to change the support film from the first form to the second form.

Preferably, the "applying a second condition to the supporting film after the deformation is completed to maintain the second shape of the supporting film" includes:

First withdraw the heating condition from the first deformable body and maintain the preset voltage to the second deformable body to shape the support film, then withdraw the preset voltage to the second deformable body, so that The support film maintains the second form.

Preferably, the “applying a third condition to the supporting film to restore the first deformed body from the deformed state to the initial memory shape to restore the supporting film from the second form to the The "first form" includes:

When the first deformable body is heated to a temperature above the first transition temperature, the first deformable body is restored from the deformed state to the initial memory shape to restore the support film from the second configuration to the first configuration.

Preferably, when the first deformable body is a heat-induced shape memory polymer and the second deformable body is a shape memory alloy; the "applying a first condition to the support film to deform the first The body softens and the second deformable body deforms to change the support film from the first form to the second form "includes:

Heating the support film to a second transition temperature, the second transition temperature is greater than the austenite transformation end temperature of the shape memory alloy, and the austenite transformation end temperature of the shape memory alloy is greater than the first At the softening temperature of the deformable body, the second deformable body deforms to change the support film from the first form to the second form.

Preferably, the "applying a second condition to the supporting film after the deformation is completed to maintain the second shape of the supporting film" includes:

The support film is heated and maintained at a temperature above the softening temperature of the first deformable body to maintain the support film in the second form.

Preferably, the “applying a third condition to the supporting film to restore the first deformable body from the deformed state to the initial memory shape to restore the supporting film from the second form to the The "first form" includes:

The support film is cooled to a third transition temperature, which is less than the softening temperature of the first deformable body, and the first deformable body is restored from the deformed state to the initial shape to allow the support The membrane is restored from the second form to the first form.

Beneficial effect of the present invention: the supporting film in the display panel provided by the present invention realizes spontaneous deformation through the second deformable body, and realizes spontaneous recovery through the first deformable body, so as to achieve a bidirectional shape change process, and thereby realize spontaneous display of the entire display panel Deformation and spontaneous recovery. Compared with the application of external force to cause deformation, the user experience is better, and the mechanical control structure does not increase the weight and volume of the display panel.

BRIEF DESCRIPTION

In order to more clearly explain the technical solutions in the embodiments of the present invention, the drawings required in the embodiments will be briefly described below. Obviously, the drawings in the following description are only some embodiments of the present invention. Those of ordinary skill in the art can obtain other drawings based on these drawings without paying any creative labor.

FIG. 1 is a schematic structural diagram of a display panel according to a first embodiment of the present invention.

2 is a schematic structural diagram of a display panel according to a second embodiment of the present invention.

FIG. 3 is a schematic diagram of a support film provided by the present invention transformed from a first form to a second form.

FIG. 4 is a schematic diagram of a support film provided by the present invention returning from a second form to a first form.

FIG. 5 is a schematic diagram of another supporting film provided by the present invention transformed from a first form to a second form.

FIG. 6 is a schematic diagram of another support film provided by the present invention returning from the second form to the first form.

7 is a schematic structural diagram of another display panel according to the first embodiment of the present invention.

8 is a schematic structural diagram of a display device provided by the present invention.

FIG. 9 is a schematic flowchart of a method for controlling a display panel provided by the present invention.

FIG. 10 is a sub-flow diagram of step S100 in FIG. 9.

detailed description

The technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the protection scope of the present invention.

The terms “first”, “second”, etc. in the description and claims of the present invention and the accompanying drawings are used to distinguish different objects, not to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally also includes Other steps or units inherent to these processes, methods, products or equipment.

Reference herein to "embodiments" means that specific features, structures, or characteristics described in connection with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive of other embodiments. Those skilled in the art understand explicitly and implicitly that the embodiments described herein can be combined with other embodiments.

Referring to FIG. 1, a first embodiment of the present invention provides a display panel 10. The display panel 10 includes a light emitting device 100 and a supporting film 200. The light emitting device 100 is disposed on one side of the supporting film 200. The light emitting device 100 includes but is not limited to one of an organic electroluminescent device, a liquid crystal display light emitting device, and an electrophoretic display light emitting device.

The supporting film 200 includes a first deforming body 210 and a second deforming body 220. The first deforming body 210 has an initial memory shape so that the supporting film 200 has a first shape. It can be understood that when the initial memory shape of the first deformable body 210 is a plane, the first form of the supporting film 200 is a plane, that is, the display panel 10 is in a flat state before being deformed.

It can be understood that the first deformable body 210 and the second deformable body 220 may be arranged in a stacked manner. In a further embodiment, the support film 200 includes a first deformation layer 230 composed of a first deformation body 210 and a second deformation layer 240 composed of a second deformation body 220, and the first deformation layer 230 is disposed on the second deformation layer On the surface of 240, and the first deformed layer 230 is disposed adjacent to the light emitting device 100 compared to the second deformed layer 240. It can be understood that when the first deformable body 210 and the second deformable body 220 are arranged in a layered manner, the first deformable body 210 has an initial memory shape means that the first deformable layer 230 is processed to have the Begin to remember the shape of the membrane. Referring to FIG. 2, in another embodiment, the support film 200 includes a first deformed layer 230 and a third deformed layer 250 composed of a first deformed body 210 and a second deformed layer 240 composed of a second deformed body 220 The second deformation layer 240 is interposed between the first deformation layer 230 and the third deformation layer 250. It can be understood that the form of laminating the first deforming layer 230 and the second deforming layer 240 is not limited to the above two types, and may also be a cross-layered arrangement, or one of them may be covered with another. In some embodiments, the first deformable body 210 and the second deformable body 220 may also be mixed with each other to form a film layer.

Referring to FIG. 3, under the first condition, the first deformable body 210 is softened and the second deformable body 220 is deformed to change the support film 200 from the first form A to the second form B. The second form B is different from the first form A. When the first form A is a plane, the second form B may be bent and folded in a U-shape. It can be understood that the first form A and the second form B may also be other forms. It can be understood that the first deformable body 210 will soften under the first condition, and the second deformable body 220 will be deformed at this time, and the softened first deformable body 210 will be under the force generated by the deformation of the second deformable body 220 At this time, the deformation will occur together. At this time, the deformation process of the supporting film 200 is mainly effected by the second deforming body 220 to realize the spontaneous deformation of the entire supporting film 200.

The support film 200 after the deformation is completed maintains the second form B under the second condition. That is, under the second condition, the support film 200 maintains a deformed state, for example, a state of being bent and folded.

Referring to FIG. 4, under the third condition, the first deformable body 210 is restored from the deformed state to the initial memory shape to restore the support film 200 from the second form B to the first form A. Since the first deformable body 210 has an initial memory shape, the deformed first deformable body 210 can be restored from the deformed state to the initial memory shape under the third condition. At this time, the recovery process of the supporting film 200 is mainly caused by the first deformation The body 210 is determined so that the entire supporting film 200 realizes spontaneous recovery. It can be understood that, through the continuous conversion under the first condition, the second condition, and the third condition, to achieve the conversion between the first form A and the second form B, the deformation process of the display panel 10 can be cycled.

The supporting film 200 in the display panel 10 provided by the present invention realizes spontaneous deformation through the second deformable body 220, and realizes spontaneous recovery through the first deformable body 210 to achieve a bidirectional shape change process, thereby achieving spontaneous deformation of the entire display panel And spontaneous recovery. Compared with the application of external force to cause deformation, the user experience is better, and the mechanical control structure does not increase the weight and volume of the display panel.

In a further embodiment, the first deformable body 210 includes a heat-induced shape memory polymer, an electro-induced shape memory polymer, a photo-induced shape memory polymer, a chemically-induced shape memory polymer and a shape memory alloy. At least one. The second deformable body 220 includes at least one of a heat-induced shape memory polymer, an electro-induced shape memory polymer, a photo-induced shape memory polymer, a chemosensory shape memory polymer, and a shape memory alloy.

It can be understood that the heat-induced shape memory polymer refers to a product that is processed into an initial shape under initial conditions, and after the product is deformed and fixed after changing its initial conditions, it can be restored by the stimulation of heating conditions. Polymer material of initial shape. The thermotropic shape memory polymer includes at least one of a thermosetting shape memory polymer and a thermoplastic shape memory polymer.

Electro-shape shape memory polymer refers to a product that is processed into an initial shape under initial conditions, and after the product is deformed and fixed after changing its initial conditions, the initial shape can be restored by providing the stimulation of voltage conditions. Molecular materials. The photo-induced shape memory polymer refers to a product that is processed into an initial shape under initial conditions, and after the product is deformed and fixed after changing its initial conditions, the initial shape can be restored by providing stimulation of light conditions. Molecular materials. A chemically-sensitive shape memory polymer refers to a product that is processed into an initial shape under initial conditions, and after the product is deformed and fixed after changing its initial conditions, it can be restored to its original shape by providing stimulation with chemically sensitive conditions. Polymer Materials. Shape memory alloy refers to a material composed of two or more metal elements that has a shape memory effect through thermoelasticity and martensite transformation and its inversion. For example, some shape memory alloys recover the high-temperature phase shape when heated and when cooled It can also restore the shape of the low-temperature phase; some shape memory alloys are deformed at a lower temperature, and can recover the shape before deformation after heating.

It can be understood that the first condition, the second condition, and the third condition are determined according to the specific materials of the first deformable body 210 and the second deformable body 220.

In a further embodiment, when the first deformable body 210 is a thermo-induced shape memory polymer, the second deformable body 220 is an electro-induced shape memory polymer, and the electro-induced shape memory polymer is a conductive polymer.

The first condition includes heating the first deformable body 210 to a first transition temperature, the first deformable body 210 is softened at the first transition temperature, and the first transition temperature is greater than the softening temperature of the first deformable body 210. That is, the first deformable body is heated until it softens. The first condition further includes providing a predetermined voltage to the second deformable body 220 to deform the second deformable body 220 to change the support film 200 from the first form A to the second form B. In this embodiment, the second deformable body 220 is a conductive polymer, which deforms when a voltage is supplied, wherein the degree of deformation can be determined according to the magnitude of the supplied voltage. The first deformable body 210 is in a soft state after softening. At this time, the second deformable body 220 will deform the first deformable body 210 during the deformation process, so that the support film 200 changes from the first form A to the second form B. It can be understood that the manner of heating the first deformable body 210 is not limited, for example, heating terminals are provided at both ends of the first deformable layer 230 formed by the first deformable body 210, or heating is provided in the middle of the first deformable layer 230 The wire is preferably a flexible and lightweight heating wire.

In a further embodiment, the second condition includes first withdrawing the heating condition from the first deformable body 210 and maintaining the preset voltage to the second deformable body 220 so that the support film 200 is shaped, and then the second deformable body 220 The preset voltage is withdrawn to keep the support film 200 in the second form B. It can be understood that after the first deforming body 210 is first withdrawn from the heating condition, the first deforming body 210 will gradually cool and change from the softened state to the solid state, so that the first deforming body 210 is fixedly shaped and kept in the process The provision of the preset voltage to the second deformable body 220 is to prevent the second deformable body 220 from being unable to stably deform the deformed shape due to the loss of voltage before the unfixed molding, and eventually the fixed shape is not the second shape B. After the support film 200 is shaped, the second deformable body 220 is withdrawn from the preset voltage. At this time, the entire deformation process is completed, and the support film 200 is maintained in the second form B.

In a further embodiment, the third condition includes heating the first deformable body 210 above the first transition temperature, the first deformable body 210 is restored from the deformed state to the initial memory shape to restore the support film 200 from the second form B To the first form A. It can be understood that heating the first deformable body 210 above the first transition temperature will soften the first deformable body 210. Since the first deformable body 210 has an initial memory shape, when the first deformable body 210 is heated above the first transition temperature It will recover from the deformed state to the initial memory shape. At this time, the second deformable body 220 is not supplied with voltage, and it loses the condition of maintaining the second form B and softens. During the restoration of the first deformable body 210, the softened second deformable body 220 will be restored together with the first deformable body 210, and finally the entire supporting film 200 is restored from the second form B to the first form A.

It can be understood that the softening temperature of the first deformable body is determined according to the specific material of the first deformable body. It can be understood that when the first deformable body is a thermosetting shape memory polymer, the softening temperature of the first deformable body is the melting point of the first deformable body; when the first deformable body is a thermoplastic shape memory polymer, The softening temperature of the first deformable body is the glass transition temperature of the first deformable body.

Please refer to FIGS. 2 and 5 again. A second embodiment of the present invention provides a display panel 10a. In the display panel 10a, when the first deformable body 210 is a thermo-induced shape memory polymer, the second deformable body 220 is a shape In the case of a memory alloy; the first condition includes heating the support film 200 to a second transition temperature, the second transition temperature is greater than the austenite transformation end temperature of the shape memory alloy, and the austenite transformation end temperature of the shape memory alloy is greater than the first deformation At the softening temperature of the body 210, the second deformable body 220 deforms to change the support film 200 from the first form A to the second form B. In this embodiment, the second deformable body 220 uses a shape memory alloy. It can be understood that the austenite transformation end temperature is different according to the material composition of the shape memory alloy. The shape memory alloy will deform when its austenite transformation finish temperature is above. When the support film 200 is heated to the second transition temperature, the first deformable body 210 will soften, the second deformable body 220 will deform, and the softened first deformable body 210 will deform along with the second deformable body 220, so that The support film 200 has a first form to become a second form.

In a further embodiment, the shape memory alloy has a deformed memory shape, so that the shape memory alloy deforms to the deformed memory shape when heated to the second transition temperature. It can be understood that the shape memory alloy can be pre-processed to have a deformed memory shape, and the deformed memory shape corresponds to the second form of the support film 200, so that when the shape memory alloy is deformed into the deformed memory shape, the support film 200 is formed from The first form A becomes the second form B.

In a further embodiment, the second condition includes heating the support film 200 to maintain the temperature above the softening temperature of the first deformable body 210 so that the support film 200 maintains the second form B. Maintaining the second deformable body 220 above the softening temperature of the first deformable body 210 can maintain the second deformable body 220 to maintain its deformed memory shape, and the first deformable body 210 is still in a softened state, which does not affect the second deformable body 220 shape. The support film 200 is preferably heated and maintained at a temperature above the austenite transformation end temperature of the shape memory alloy.

Referring to FIG. 6, in a further embodiment, the third condition includes cooling the support film 200 to a third transition temperature, the third transition temperature is less than the softening temperature of the first deformable body 210, and the first deformable body 210 recovers from the deformed state To the initial memory shape to restore the support film 200 from the second form B to the first form A. After cooling to the third transition temperature, the first deformable body 210 with the initial memory shape will return to the initial memory shape from the deformed state. At this time, the second deformable body 220 no longer maintains the deformed memory shape, which will follow the first A deformable body 210 is restored to the first form A together.

Referring to FIG. 7, in a further embodiment, the display panel 10 further includes a substrate 300, an encapsulation layer 400, a polarizer 500, and a cover plate 600, wherein the substrate 300 is disposed on the surface of the support film 200, and the light emitting device 100 is disposed on the substrate 300 is away from the surface of the support film 200. The substrate 300 is a flexible substrate that can be deformed during the deformation of the supporting film 200. The material of the substrate 300 includes but is not limited to organic materials and inorganic materials, and the organic materials include but are not limited to polyimide materials, Polyethersulfone material, polycarbonate material. The encapsulation layer 400 is disposed on the side of the light emitting device 100 away from the substrate 300, and the encapsulation layer 400 is used to encapsulate and protect the light emitting device 100. The polarizer 500 is disposed on the side of the encapsulation layer 400 away from the light emitting device 100, and the polarizer 500 is used to filter outside light. The cover plate 600 is disposed on the side of the polarizer 500 away from the encapsulation layer 400. The cover plate 600 is used to protect each device structure disposed under it.

Referring to FIG. 8, the present invention also provides a display device 20. The display device 20 includes the display panel 10 according to any one of the foregoing embodiments. The display device 20 is preferably a flexible display device. When the support film 200 in the display panel 10 undergoes a deformation process, the flexible display device deforms together. The display device 20 may be, but not limited to, e-books, smart phones (such as Android phones, iOS phones, Windows phones, etc.), tablets, flexible palmtop computers, flexible notebook computers, mobile Internet devices (MID, Mobile Internet Devices) Or wearable devices, or may be an organic light-emitting diode (Organic light-emitting diodes, OLED) display device, an active matrix organic light emitting diode (Active Matrix Organic Light Emitting Diode, AMOLED) display device.

Please refer to FIG. 9, FIG. 1, FIG. 3 and FIG. 4, the present invention also provides a control method of the display panel 10. The display panel 10 includes a light emitting device 100 and a supporting film 200. The support film 200 includes a first deformable body 210 and a second deformable body 220. The first deformable body 210 has an initial memory shape so that the support film 200 has a first shape.

The control method of the display panel 10 includes step S100, step S200, and step S300. The specific steps are as follows.

In step S100, a first condition is applied to the support film 200 to soften the first deformable body 210 and deform the second deformable body 220 so that the support film 200 changes from the first form A to the second form B. The first deformable body 210 and the second deformable body 220 respectively include a thermo-induced shape memory polymer, an electro-induced shape memory polymer, a photo-induced shape memory polymer, a chemically induced shape memory polymer and a shape memory alloy At least one. After the first condition is applied, the first deformable body 210 will be softened, and the second deformable body 220 will be deformed. The softened first deformable body 210 will be together under the force generated by the deformation of the second deformable body 220 The deformation occurs. At this time, the deformation process of the supporting film 200 is mainly determined by the second deforming body 220 so that the entire supporting film 200 realizes spontaneous deformation.

In step S200, a second condition is applied to the support film 200 after the deformation, so that the support film 200 maintains the second form B.

In step S300, a third condition is applied to the support film 200 to restore the first deformable body 210 from the deformed state to the initial memory shape to restore the support film 220 from the second form B to the first form A. Since the first deformable body 210 has an initial memory shape, the deformed first deformable body 210 can be restored from the deformed state to the initial memory shape under the third condition. At this time, the recovery process of the supporting film 200 is mainly caused by the first deformation The body 210 is determined so that the entire supporting film 200 realizes spontaneous recovery.

The control method of the display panel 10 provided by the present invention enables the supporting film 200 to realize spontaneous deformation through the second deformable body 220 and spontaneous recovery through the first deformable body 210 to achieve a bidirectional shape change process, and thus realize Spontaneous deformation and spontaneous recovery.

It can be understood that the first condition, the second condition, and the third condition are determined according to the specific materials of the first deformable body 210 and the second deformable body 220.

In a further embodiment, when the first deformable body 210 is a thermo-induced shape memory polymer, the second deformable body 220 is an electro-induced shape memory polymer, and the electro-induced shape memory polymer is a conductive polymer; The "applying the first condition to the support film 200 to soften the first deformable body 210 and deform the second deformable body 220 to change the support film 200 from the first form to the second form" includes step S110 and step S120. Please refer to Figure 10, the detailed steps are as follows.

Step S110, the first deformable body 210 is heated to a first transition temperature, the first deformable body 210 is softened at the first transition temperature, and the first transition temperature is greater than the softening temperature of the first deformable body 210. The material of the first deformable body 210 is different, and the softening temperature is also different.

In step S120, a preset voltage is provided to the second deformable body 220 to deform the second deformable body 220 to change the support film 200 from the first form to the second form.

In this embodiment, the second deformable body 220 is a conductive polymer, which deforms when a voltage is supplied, wherein the degree of deformation can be determined according to the magnitude of the supplied voltage. The first deformable body 210 is in a soft state after softening. At this time, the second deformable body 220 will deform the first deformable body 210 during the deformation process, so that the support film 200 changes from the first form A to the second form B.

In a further embodiment, “applying a second condition to the support film 200 after the deformation is completed to maintain the support film 200 in the second form” includes first removing the heating condition from the first deformable body 210 and maintaining the second deformable body 220 provides a preset voltage to shape the support film 200, and then withdraws the preset voltage from the second deformable body 220, so that the support film 200 maintains the second form B. It can be understood that after the first deforming body 210 is first withdrawn from the heating condition, the first deforming body 210 will gradually cool and change from the softened state to the solid state, so that the first deforming body 210 is fixedly shaped and kept in the process The provision of the preset voltage to the second deformable body 220 is to prevent the second deformable body 220 from being unable to stably deform the deformed shape due to the loss of voltage before the unfixed molding, and eventually the fixed shape is not the second shape B. After the support film 200 is shaped, the second deformable body 220 is withdrawn from the preset voltage. At this time, the entire deformation process is completed, and the support film 200 is maintained in the second form B.

In a further embodiment, "applying a third condition to the support film 200 to restore the first deformable body 210 from the deformed state to the initial memory shape to restore the support film 200 from the second form B to the first form A" includes By heating the first deformable body 210 above the first transition temperature, the first deformable body 210 is restored from the deformed state to the initial memory shape to restore the support film 200 from the second form to the first form A. It can be understood that heating the first deformable body 210 above the first transition temperature will soften the first deformable body 210. Since the first deformable body 210 has an initial memory shape, when the first deformable body 210 is heated above the first transition temperature It will recover from the deformed state to the initial memory shape, and at this time, the second deformable body 220 is not supplied with voltage. During the restoration of the first deformable body 210, the second deformable body 220 will recover together with the first deformable body 210, and finally make The entire support film 200 is restored from the second form B to the first form A.

In a further embodiment, when the first deformable body 210 is a thermo-induced shape memory polymer and the second deformable body 220 is a shape memory alloy; the "applying the first condition to the support film 200 makes the first deformable body 210 softens and the second deformable body 220 deforms to change the support film 200 from the first form A to the second form B "includes heating the support film 200 to a second transition temperature, which is greater than the austenite of the shape memory alloy The bulk transformation end temperature, and the shape memory alloy austenite transformation end temperature is greater than the softening temperature of the first deformable body 210, and the second deformable body 220 deforms to change the support film 200 from the first form A to the second form B. In this embodiment, the second deformable body 220 uses a shape memory alloy. It can be understood that the austenite transformation end temperature is different according to the material composition of the shape memory alloy.

In a further embodiment, “applying the second condition to the support film 200 after the deformation is completed to maintain the support film 200 in the second form B” includes heating the support film 200 to maintain the temperature above the softening temperature of the first deformable body 210 , So that the support film 200 maintains the second form B. Maintaining the second deformable body 220 above the softening temperature of the first deformable body 210 can maintain the second deformable body 220 to maintain its deformed memory shape, and the first deformable body 210 is still in a softened state, which does not affect the second deformable body 220 shape. The support film 200 is preferably heated and maintained at a temperature above the austenite transformation end temperature of the shape memory alloy.

In a further embodiment, "applying a third condition to the support film 200 to restore the first deformable body 210 from the deformed state to the initial memory shape to restore the support film 200 from the second form B to the first form A" includes The support film 200 is cooled to a third transition temperature, which is lower than the softening temperature of the first deformable body 210, and the first deformable body 210 is restored from the deformed state to the initial shape to restore the support film 200 from the second form B to The first form A. When the temperature is lowered to the third transition temperature, the first deformed body 210 with the initial memory shape will return to the initial memory shape from the deformed state after the temperature is lowered to the third transition temperature, and the second deformed body 220 no longer remains The deformed memory shape will return to the first form along with the first deformable body 210.

The above examples only express several implementations of the present invention, and their descriptions are more specific and detailed, but they should not be construed as limiting the patent scope of the present invention. It should be noted that, those of ordinary skill in the art, without departing from the concept of the present invention, can also make several modifications and improvements, which all fall within the protection scope of the present invention. Therefore, the protection scope of the invention patent shall be subject to the appended claims.

Claims (20)

A display panel, characterized in that the display panel includes: Light emitting device A supporting film, the light emitting device is provided on one side of the supporting film; The support membrane includes a first deformable body and a second deformable body, the first deformable body has an initial memory shape so that the support membrane has a first form; under a first condition, the first deformable body softens And the second deformable body is deformed to change the support film from the first form to the second form; the support film after the deformation is maintained in the second form under the second condition; under the third condition, the The first deformable body is restored from the deformed state to the initial memory shape to restore the support membrane from the second form to the first form. The display panel according to claim 1, wherein the first deformable body comprises a thermo-induced shape memory polymer, an electro-induced shape memory polymer, a photo-induced shape memory polymer, and a chemically induced shape memory At least one of a polymer and a shape memory alloy; the second deformable body includes a thermally-induced shape memory polymer, an electro-induced shape memory polymer, a photo-induced shape memory polymer, and a chemically induced shape memory polymer And at least one of shape memory alloys. The display panel according to claim 2, wherein when the first deformable body is a thermo-induced shape memory polymer, the second deformable body is an electro-induced shape memory polymer, and the electro-induced When the shape memory polymer is a conductive polymer; The first condition includes heating the first deformed body to a first transition temperature, the first deformed body is softened at the first transition temperature, and the first transition temperature is greater than that of the first deformed body Softening temperature; the first condition further includes providing a preset voltage to the second deformable body to deform the second deformable body to change the support film from the first form to the second form. The display panel of claim 3, wherein the second condition includes first withdrawing the heating condition from the first deformable body and maintaining a preset voltage supplied to the second deformable body, so that the After the supporting film is shaped, a preset voltage is withdrawn from the second deformable body to maintain the second shape of the supporting film. The display panel according to claim 4, wherein the third condition includes heating the first deformable body above a first transition temperature, and the first deformable body recovers from the deformed state to the initial state The shape is memorized to restore the support film from the second form to the first form. The display panel according to claim 2, wherein when the first deformable body is a thermo-induced shape memory polymer and the second deformable body is a shape memory alloy; the first condition includes The support film is heated to a second transformation temperature, the second transformation temperature is greater than the austenite transformation end temperature of the shape memory alloy, and the austenite transformation end temperature of the shape memory alloy is greater than the first deformation body At the softening temperature, the second deformable body deforms to change the support film from the first form to the second form. The display panel according to claim 6, wherein the shape memory alloy has a deformed memory shape, so that the shape memory alloy deforms to the deformed memory shape when heated to the second transition temperature. The display panel according to claim 6, wherein the second condition includes heating and supporting the support film at a temperature above the softening temperature of the first deformable body to maintain the support film in the second form . The display panel of claim 8, wherein the third condition includes cooling the support film to a third transition temperature, the third transition temperature is less than the softening temperature of the first deformable body, so The first deformed body is restored from the deformed state to the initial shape to restore the support film from the second form to the first form. The display panel according to any one of claims 1 to 9, wherein the support film includes a first deformation layer composed of the first deformation body and a second deformation composed of the second deformation body Layer, the first deformation layer is provided on the surface of the second deformation layer. The display panel according to any one of claims 1-9, wherein the support film includes a first deformed layer and a third deformed layer composed of the first deformed body, and a second deformed body In the second deformation layer, the second deformation layer is interposed between the first deformation layer and the third deformation layer. The display panel according to any one of claims 1 to 11, wherein the display panel further comprises: A substrate, the substrate is provided on a surface of the support film, and the light emitting device is provided on a surface of the substrate away from the support film; An encapsulation layer, the encapsulation layer is provided on a side of the light emitting device away from the substrate; A polarizer, the polarizer is disposed on a side of the encapsulation layer away from the light emitting device; A cover plate, the cover plate is disposed on a side of the polarizer away from the encapsulation layer. A display device, characterized in that the display device comprises the display panel according to any one of claims 1-12. A control method for a display panel, characterized in that the display panel includes a light-emitting device and a support film, the light-emitting device is disposed on one side of the support film, and the support film includes a first deformable body and a second deformable body Body, the first deformable body has an initial memory shape so that the support film has a first shape; The control method of the display panel includes: Applying a first condition to the support film to soften the first deformable body and deform the second deformable body to change the support film from the first form to the second form; Applying a second condition to the support film after the deformation to maintain the support film in the second form; A third condition is applied to the support film to restore the first deformed body from the deformed state to the initial memory shape to restore the support film from the second form to the first form. The control method of the display panel according to claim 14, wherein when the first deformable body is a thermo-induced shape memory polymer, the second deformable body is an electro-induced shape memory polymer, and When the electro-induced shape memory polymer is a conductive polymer; the "applying a first condition to the support film to soften the first deformable body and deform the second deformable body to make the support film "Change from the first form to the second form" includes: Heating the first deformed body to a first transition temperature, the first deformed body is softened at the first transition temperature, and the first transition temperature is greater than the softening temperature of the first deformed body; A preset voltage is provided to the second deformable body to deform the second deformable body to change the support film from the first form to the second form. The control method of the display panel according to claim 15, wherein the "applying a second condition to the supporting film after the deformation is completed to keep the supporting film in the second form" includes: First withdraw the heating condition from the first deformable body and maintain the preset voltage to the second deformable body to shape the support film, then withdraw the preset voltage to the second deformable body, so that The support film maintains the second form. The control method of the display panel according to claim 16, wherein the "applying a third condition to the support film restores the first deformed body from the deformed state to the initial memory shape to make The restoration of the support film from the second configuration to the first configuration includes: When the first deformable body is heated to a temperature above the first transition temperature, the first deformable body is restored from the deformed state to the initial memory shape to restore the support film from the second configuration to the first configuration. The method for controlling a display panel according to claim 14, wherein when the first deformable body is a thermo-induced shape memory polymer and the second deformable body is a shape memory alloy; The first condition applied by the support film to soften the first deformable body and deform the second deformable body to change the support film from the first form to the second form "includes: Heating the support film to a second transition temperature, the second transition temperature is greater than the austenite transformation end temperature of the shape memory alloy, and the austenite transformation end temperature of the shape memory alloy is greater than the first At the softening temperature of the deformable body, the second deformable body deforms to change the support film from the first form to the second form. The control method of the display panel according to claim 18, wherein the "applying a second condition to the supporting film after the deformation is completed to maintain the supporting film in the second form" includes: The support film is heated and maintained at a temperature above the softening temperature of the first deformable body to maintain the support film in the second form. The control method of the display panel according to claim 19, wherein the "applying a third condition to the support film to restore the first deformable body from the deformed state to the initial memory shape to make The restoration of the support film from the second configuration to the first configuration includes: The support film is cooled to a third transition temperature, which is less than the softening temperature of the first deformable body, and the first deformable body is restored from the deformed state to the initial shape to allow the support The membrane is restored from the second form to the first form.

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