CN113299190A

CN113299190A - Display module and electronic equipment

Info

Publication number: CN113299190A
Application number: CN202110560704.4A
Authority: CN
Inventors: 范丽萍; 徐波
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2021-05-21
Filing date: 2021-05-21
Publication date: 2021-08-24

Abstract

The application discloses display module assembly and electronic equipment belongs to electronic equipment technical field. The display module assembly includes: a reel; the fixed shaft is arranged at an interval with the scroll, and is provided with an accommodating cavity in which a metal body is arranged; the heating element is arranged in the accommodating cavity and used for heating the metal body; flexible screen, the winding is on the spool, and flexible screen includes: a flexible display layer; the bag is arranged on the non-display side of the flexible display layer and is communicated with the accommodating cavity; wherein, the spool rotates, drives flexible screen expansion, and the heating member heating melts the metal body, and in the molten metal body flowed into the bag, the heating member stopped heating, the metal body solidification formed the support to flexible display layer.

Description

Display module and electronic equipment

Technical Field

The application belongs to the technical field of electronic equipment, concretely relates to display module assembly and electronic equipment.

Background

Due to the requirement of a large display screen, a folding screen and a flexible screen become mainstream display screens of mobile phones. The position of buckling of the existing folding screen is influenced by stress for a long time, so that creases are easily generated, and the display effect and reliability of the display screen are influenced. Therefore, the roll screen is popular with more people. However, the area under the expanded screen of the curled screen always has a partial area without a supporting structure, so that the screen is stressed greatly and is easy to be damaged due to mistaken touch.

Disclosure of Invention

The application aims at providing a display module assembly and electronic equipment, solves the problem that the screen of flexible screen lacks bearing structure at least.

In order to solve the technical problem, the present application is implemented as follows:

in a first aspect, an embodiment of the present application provides a display module, including: a reel; the fixed shaft is arranged at an interval with the scroll, and is provided with an accommodating cavity in which a metal body is arranged; the heating element is arranged in the accommodating cavity and used for heating the metal body; flexible screen, the winding is on the spool, and flexible screen includes: a flexible display layer; the bag is arranged on the non-display side of the flexible display layer and is communicated with the accommodating cavity; wherein, the spool rotates, drives flexible screen expansion, and the heating member heating melts the metal body, and in the molten metal body flowed into the bag, the heating member stopped heating, the metal body solidification formed the support to flexible display layer.

In a second aspect, an embodiment of the present application provides an electronic device, including: a middle frame; the display module according to any of the above first aspects, connected to the middle frame.

In the embodiment of this application, the display module assembly has set up the metal body in holding the intracavity, and holds chamber and bag intercommunication, and bag and flexible display layer twine on the spool together. As the flexible screen is deployed, the bladder and flexible display layer are deployed together. At the same time, the heated metal body melts into a liquid state, so that the metal body can flow from the accommodating cavity to the bag, and is re-solidified into a solid after the heating is stopped, and is supported below the flexible display layer to form a support for the flexible display layer. Therefore, after the flexible screen is unfolded, the flexible display layer can be supported by the solidified metal body, and damage caused by mistaken touch is avoided. Meanwhile, when the flexible screen needs to be folded, the solidified metal body is heated again to be melted into liquid, and the liquid flows from the bag to the accommodating cavity, so that the flexible screen can be wound on the reel again to be folded, and the flexible screen is convenient to carry.

Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.

Drawings

The above and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic cross-sectional view of a display module according to an embodiment of the present application;

FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;

FIG. 3 is an enlarged schematic view of the structure at B in FIG. 1;

FIG. 4 is a schematic perspective view of a flexible screen according to one embodiment of the present application;

FIG. 5 is a schematic cross-sectional structural view of a flexible screen according to one embodiment of the present application;

FIG. 6 is a schematic view of a display module according to an embodiment of the present application in partial cross section;

FIG. 7 is a schematic view of a partial cross-sectional structure of a display module according to an embodiment of the present application in different operation modes;

FIG. 8 is a partial cross-sectional structural schematic view of a stationary shaft according to one embodiment of the present application;

FIG. 9 is a schematic cross-sectional view of a display module according to another embodiment of the present application;

FIG. 10 is a schematic cross-sectional view of a display module according to another embodiment of the present application;

FIG. 11 is an enlarged schematic view of FIG. 10 at C;

FIG. 12 is a schematic cross-sectional view illustrating a display module according to another embodiment of the present application;

FIG. 13 is a schematic cross-sectional view of a display module according to another embodiment of the present application;

FIG. 14 is an enlarged schematic view of FIG. 13 at D;

FIG. 15 is a schematic representation of the principle of operation of a metal body according to one embodiment of the present application;

fig. 16 is a schematic view of the operating principle of a piezoelectric body according to an embodiment of the present application;

FIG. 17 is a block diagram illustrating the structure of an electronic device according to one embodiment of the present application.

Reference numerals:

10 display module, 100 scroll, 102 fixed shaft, 1020 containing cavity, 1022 first side wall, 1024 second side wall, 1026 air hole, 104 heating element, 106 flexible screen, 1060 flexible display layer, 1062 capsule, 10620 capsule cavity, 10622 flexible diaphragm, 10624 first capsule wall, 10626 second capsule wall, 1064 conductive glue, 1066 flexible circuit board, 1068 controller, 108 metal body, 110 piezoelectric body, 20 electronic device, 200 middle frame.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The features of the terms first and second in the description and in the claims of the present application may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality" means two or more unless otherwise specified. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

In the description of the present application, it is to be understood that the terms "length," "upper," "lower," "front," "back," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

The following describes a display module and an electronic device according to an embodiment of the present application with reference to fig. 1 to 17.

As shown in fig. 1, the display module 10 according to the first embodiment of the present application includes a reel 100, a fixed shaft 102, a heating element 104, and a flexible screen 106.

Specifically, the fixed shaft 102 is disposed spaced apart from the reel 100. The fixed shaft 102 is provided with an accommodating cavity 1020, and a metal body 108 with a lower melting point is arranged in the accommodating cavity 1020. The melting point of the metal body 108 is lower than 40 ℃. The heating member 104 is disposed within the receiving cavity 1020 of the fixed shaft 102. The heating element 104 is used to heat the metal body 108. A flexible screen 106 is wound on the reel 100. Flexible screen 106 includes flexible display layer 1060 and bladder 1062. The pouch 1062 is disposed on the non-display side of the flexible display layer 1060 to avoid affecting the display effect of the flexible display layer 1060. The pocket 1062 communicates with the receiving cavity 1020 of the fixed shaft 102. Wherein, the reel 100 rotates to drive the flexible screen 106 to unfold, and at the same time, the heating element 104 heats and melts the metal body 108, so that the metal body 108 is melted into liquid and can flow. The molten metal body 108 flows into the bladder 1062, the heating element 104 stops heating, and the liquid metal body 108 solidifies due to the reduced temperature, forming a support for the flexible display layer 1060. It will be appreciated that the melting point of the metal body 108 is less than 40 c, which on the one hand melts rapidly into a liquid as the heating element 104 is heated, and on the other hand, can avoid its melting point being too high to cause damage to other components of the electronic device. In addition, the melting point is lower than 40 ℃, and the liquid metal body 108 can be rapidly solidified after heating is stopped, so that the flexible screen 106 is rapidly supported, and the working efficiency of the electronic device is improved.

According to the display module 10 provided in the embodiment of the first aspect of the present application, the metal body 108 is disposed in the accommodating chamber 1020, the accommodating chamber 1020 and the bladder 1062 are in communication, and the bladder 1062 and the flexible display layer 1060 are wound on the reel 100 together. As flexible screen 106 is expanded, bladder 1062 and flexible display layer 1060 expand together. At the same time, the heated metal body 108 melts to a liquid state, and thus may flow from the receiving chamber 1020 to the pouch 1062, and re-solidifies to a solid after the heating is stopped, riding under the flexible display layer 1060, i.e., on the non-display side of the flexible display layer 1060, forming a support for the flexible display layer 1060. Thus, after the flexible screen 106 is unfolded, the flexible display layer 1060 can be supported by the cured metal body 108, and damage caused by accidental touch can be avoided. Meanwhile, when the flexible screen 106 needs to be folded, the solidified metal 108 is heated again to be melted into liquid, and then the liquid flows from the pocket 1062 to the accommodating cavity 1020, so that the flexible screen 106 can be wound on the reel 100 again to be folded, and the flexible screen is convenient to carry.

Specifically, by the arrangement of the scroll 100, the flexible screen 106 is conveniently wound on the scroll, so that the flexible screen 106 is accommodated, the occupied space is reduced, and the electronic device 20 is convenient to carry. The fixed shaft 102 is arranged to cooperate with the roller 100 to tension the flexible screen 106 so that it has a certain tension to facilitate the display of the screen. It will be appreciated that flexible screen 106 is attached to spool 100 at one end and to fixed shaft 102 at the other end. Of course, there may be some variation in the spacing between the roller 100 and the stationary shaft 102 when the flexible screen 106 is being deployed or stowed. The fixing shaft 102 is provided with a receiving cavity 1020 for receiving the metal body 108. The heating member 104 is disposed in the receiving chamber 1020 to facilitate direct heating of the metal body 108 to melt it into a liquid for flow, thereby allowing flow between the receiving chamber 1020 and the bladder 1062. When the liquid metal 108 flows into the bladder 1062 and resolidifies, it may form a support for the flexible display layer 1060. When the flexible screen 106 needs to be folded, the flexible screen 106 is rewound on the reel 100 along with the rotation of the reel 100, and at the same time, the reel 100 can generate a pressing force on the flexible screen 106 and correspondingly on the bag 1062, so as to press the liquid metal body 108 in the bag 1062 into the accommodating cavity 1020, thereby facilitating the rolling winding of the flexible screen 106 and reducing the occupied space. The heating element 104 is disposed in the receiving cavity 1020 to transfer heat to the metal body 108, so that the metal body can be switched between a solid state and a liquid state, and thus can flow in the liquid state and form a support for the flexible display layer 1060 in the solid state, thereby reducing damage caused by accidental touch.

It should be noted that the metal body 108 refers to an alloy or a metal having a melting point lower than a certain temperature. For example, a metal having a melting point of less than 40 ℃, more specifically, a single metal such as gallium having a melting point of 29.76 ℃, rubidium having a melting point of 38.89 ℃, cesium having a melting point of 28.5 ℃, or an alloy containing these metal elements.

Further, the display module 10 further includes a piezoelectric body 110. The piezoelectric body 110 may be deformed when electricity is applied. By utilizing the characteristics of the piezoelectric body 110, the liquid metal body 108 can be driven to flow. Specifically, the piezoelectric body 110 is provided on a side of the housing chamber 1020 away from the spool 100. When the electricity is applied, the piezoelectric body 110 is deformed to be arched toward the spool 100, that is, bent and arched into the housing chamber 1020, and the molten metal 108 is pushed from the housing chamber 1020 to the bladder 1062. When the flexible screen 106 needs to be folded, a reverse current can be applied to the piezoelectric bodies 110, so that the piezoelectric bodies 110 are reversely deformed, that is, deformed to a side away from the winding shaft 100, or bent and arched to the outside of the accommodating cavity 1020, and the metal body 108 in the accommodating cavity 1020 is reduced in compression, so that the metal body 108 is attracted to flow from the bag 1062 to the accommodating cavity 1020. Thus, when the flexible screen 106 is folded, on one hand, the reel 100 presses the pocket 1062, so that the liquid metal body 108 in the pocket 1062 flows to the accommodating cavity 1020, and meanwhile, the piezoelectric bodies 110 deform reversely, i.e., attract the flow of the metal body 108, and provide a certain accommodating space for the metal body 108, so that the metal body 108 in the pocket 1062 can be accommodated, thereby ensuring that the space occupied by the flexible screen 106 is reduced.

The piezoelectric body 110 is used as a driving device of the liquid metal body 108, and the driving device is simple in structure, convenient to operate and easy to implement.

In any of the above embodiments, the bladder 1062 is a vacuum bladder 1062, that is, a vacuum is provided within the bladder 1062. By adopting the vacuum design, when the liquid metal body 108 flows into the bag 1062 from the containing cavity 1020, the liquid metal body is not blocked, so that the flowing smoothness of the liquid metal body is favorably improved, the bag 1062 is rapidly filled, and then a tight and dense support can be rapidly formed below the flexible display layer 1060, and an unsupported area is avoided from being formed below the flexible display layer 1060. The vacuum design is also beneficial to easily filling the liquid metal body 108 in each position in the bag 1062, and is beneficial to improving the uniformity of the support at each position below the flexible display layer 1060, thereby improving the stability and reliability of the operation of the flexible screen 106. In addition, the bag 1062 is set to be vacuum, when the flexible screen 106 is folded, the bag 1062 can be fully compressed, that is, except for a small amount of metal bodies 108, no other substance blocks the compression of the bag 1062 in the bag 1062, so that the space occupied by the bag 1062 is reduced, the volume of the display module 10 is reduced, and the convenience in carrying the electronic device 20 is improved.

Further, a plurality of capsule cavities 10620 are provided within the capsule 1062. The plurality of pockets 10620 are provided to guide the flow direction of the liquid metal body 108, that is, the positions, shapes, etc. of the plurality of pockets 10620 may be designed according to the supporting requirements of the flexible display layer 1060, thereby improving the flexibility of the supporting structure design at the bottom of the flexible display layer 1060.

As shown in fig. 4 and 5, in some embodiments, the plurality of pockets 10620 are aligned along the length of the spool 100 toward the fixed shaft 102, or along the fixed shaft 102 toward the spool 100. The length direction of the plurality of pockets 10620 is arranged along the direction from the fixing shaft 102 to the winding shaft 100, so that the uniform structure facilitates to improve the uniformity of the distribution of the metal bodies 108 at the bottom of the flexible display layer 1060, thereby improving the uniformity of the support of the flexible display layer 1060. In addition, the number of the pockets 10620 is plural, each pocket 10620 has a narrow and long structure and a small volume, and is disposed along the fixed shaft 102 to the reel 100, so that the liquid metal body 108 can rapidly flow from the fixed shaft 102 to the pocket 1062 and flow to the reel 100, thereby rapidly forming a stable supporting structure between the reel 100 and the fixed shaft 102, and improving the forming efficiency of the supporting structure.

As shown in FIG. 5, it will be appreciated that a flexible membrane 10622 is disposed between adjacent pockets 10620 to separate the different pockets 10620 and to facilitate the rolling and winding of the flexible screen 106 with the pockets 1062 as the spool 100 rotates.

As shown in fig. 2, in any of the above embodiments, the bladder 1062 includes a first bladder wall 10624 and a second bladder wall 10626. The first bladder wall 10624 is disposed on a side of the bladder 1062 proximate the flexible display layer 1060, and the second bladder wall 10626 is disposed opposite the first bladder wall 10624 on a side of the bladder 1062 distal the flexible display layer 1060. The first capsule wall 10624 and the second capsule wall 10626 are electrically conductive, so that the solidified metal 108 in the capsule 1062 can be heated and re-melted into liquid by energizing the first capsule wall 10624 and the second capsule wall 10626, so as to facilitate the flow from the capsule 1062 to the accommodating cavity 1020 of the fixed shaft 102 when the flexible screen 106 is folded.

In some embodiments, both the first bladder wall 10624 and the second bladder wall 10626 are metal films that are both electrically conductive and have some toughness and ductility to facilitate crimping.

As shown in fig. 3, further, the flexible screen 106 further includes a conductive paste 1064. One side of the conductive paste 1064 is bonded to the flexible display layer 1060 and the other side of the conductive paste 1064 is bonded to the first capsule wall 10624. The bladder 1062 and the flexible display layer 1060 are bonded together by the conductive paste 1064, so that they are unfolded or folded synchronously with the rotation of the reel 100, thereby improving the stability and reliability of the operation of the flexible screen 106. In addition, the conductive paste 1064 has a conductive property, and thus, the first capsule wall 10624 may be grounded through the conductive paste 1064 and the flexible display layer 1060. Meanwhile, as shown in fig. 6, the flexible screen 106 further includes a flexible circuit board 1066 and a controller 1068. The flexible circuit board 1066 is electrically connected to the second bladder wall 10626 and is also electrically connected to the controller 1068. In this way, the controller 1068 can be indirectly electrically connected with the second bladder wall 10626 via the flexible circuit board 1066. Through the arrangement of the controller 1068, the first capsule wall 10624 and the second capsule wall 10626 can be controlled to heat the metal body 108, so that the accuracy and reliability of the heating time can be improved. When it is desired to collapse or expand the flexible screen 106, the first bladder wall 10624 and the second bladder wall 10626 are energized to heat the solidified metal body 108. After the flexible screen 106 is deployed, the controller 1068 controls the first and

second walls

10624 and 10626 to stop energizing, so that the liquid metal body 108 is solidified, thereby forming a support for the flexible display layer 1060.

In any of the above embodiments, the receiving cavity 1020 of the stationary shaft 102 has a first side wall 1022 and a second side wall 1024. The heating element 104 is attached at both ends to the first and

second sidewalls

1022 and 1024, respectively. It is understood that the first side wall 1022 and the second side wall 1024 are both electrically conductive. The first side wall 1022 is connected to the positive pole of a power source and the second side wall 1024 is connected to the negative pole of the power source. In this manner, the heating element 104 may be coupled to a power source via the first side wall 1022 and the second side wall 1024. When the first side wall 1022 and the second side wall 1024 are energized, the heating element 104 can be heated to liquefy the metal body 108. The first and

second sidewalls

1022, 1024 are de-energized and the heating element 104 ceases heating and the metal body 108 begins to solidify.

As shown in fig. 17, an electronic device 20 according to an embodiment of the second aspect of the present application includes a middle frame 200 and the display module 10 according to any one of the embodiments of the first aspect. The display module 10 is connected to the middle frame 200.

According to the electronic device 20 provided by the embodiment of the second aspect of the present application, the display module 10 of any one of the embodiments of the first aspect is included, so that all the beneficial effects of the embodiments of the first aspect are achieved, and details are not repeated herein. Through the setting of center 200, be convenient for fix and installation display module assembly 10.

In some embodiments, the first side wall 1022 and the second side wall 1024 are respectively disposed along the length of the electronic device 20, such that the heating element 104 has a longer length, thereby increasing the contact area with the metal body 108 and thus increasing the heating efficiency.

The electronic device 20 includes, but is not limited to, a cell phone, a watch, a tablet computer, an electronic book, a handheld game console, and the like.

An electronic device 20 according to a particular embodiment of the present application, such as a scrolling screen handset. As shown in fig. 9, 10 and 11, a vacuum bag 1062 is designed under the flexible screen 106, i.e. on the non-display side of the flexible screen 106, and a piezoelectric body 110, such as a piezoceramic sheet, is designed on the outermost side of the fixed shaft 102 of the handset. The front and rear metal rims, i.e., first side wall 1022, second side wall 1024, of the stationary shaft 102. The first and

second sidewalls

1022, 1024 are connected to the positive and negative electrodes and the heating element 104, respectively. The heating element 104 is a resistance wire.

The stationary shaft 102 contains a gallium-based low temperature liquid metal, i.e., a metal body 108. When the vacuum bag is used, the front and rear metal frame pieces and the resistance wires work and heat after being electrified, the metal body 108 is liquefied, then the piezoelectric body 110 is electrified, the piezoelectric body 110 is electrified and deformed, and the liquid metal body 108 is extruded and flows into the vacuum bag 1062 working between the first bag wall 10624 and the second bag wall 10626. In use, the first and

second bladder walls

10624, 10626 of the evacuated bladder 1062, the first and

second sidewalls

1022, 1024 of the receiving cavity 1020, and the heating element 104 are de-energized and the liquid metal body 108 is solidified and supported. When carrying is required, the first bladder wall 10624, the second bladder wall 10626, the first side wall 1022, the second side wall 1024 of the receiving cavity 1020 and the heating member 104 of the vacuum bladder 1062 are energized, and the solidified metal body 108 is heated to a liquid state. Subsequently, the piezoelectric body 110 is energized reversely, thereby being deformed reversely. The suction force of the piezoelectric body 110, which is deformed in the opposite direction, and the pressing force of the reel 100, which draws the flexible screen 106 in the rotating direction, cause the liquid metal body 108 to flow back into the receiving cavity 1020 of the fixed shaft 102. Finally, the power supply is stopped, and the liquid metal body 108 is solidified. Through the operation of the first capsule wall 10624, the second capsule wall 10626 of the capsule 1062, the first side wall 1022, the second side wall 1024 of the accommodating cavity 1020 and the heating element 104, the solid state and the liquid state of the metal body 108, i.e., the liquid state and the solid state of the flexible supporting structure, are switched, and the flexible control of the large screen and the small screen and the screen support are realized.

The structure of the electronic device 20 according to the present embodiment will be described in more detail below with reference to the accompanying drawings.

1. Bearing structure and connection structure:

this embodiment provides a support structure terminal of curling screen, designs important bearing structure. As shown in fig. 2, flexible screen 106 and support structure includes flexible display layer 1060, conductive glue 1064, and vacuum bladder 1062. An important support structure is a vacuum-placed bladder 1062. Within the bladder 1062 are a plurality of individual bladder cavities 10620. The bladder 1062 includes a first bladder wall 10624, a bladder cavity 10620, and a second bladder wall 10626. Each pocket 10620 is separated by a flexible membrane 10622. In addition, the first capsule wall 10624 of the metal layer is connected to the ground through the conductive paste 1064 and the flexible display layer 1060, and the second capsule wall 10626 is connected to the controller 1068 through the flexible circuit board 1066. The controller 1068 thus has flexibility in controlling the switching between the solid and liquid states of the metal body 108 within the vacuum bladder 1062 of the flexible zone.

2. Fixed shaft 102:

the present embodiment provides a support structure terminal for a curled screen designed with an important structure fixing shaft 102. As shown in fig. 3, the metal body 108 is designed in the fixed shaft 102, and is communicated with the vacuum bag 1062 under the flexible display layer 1060 through the air hole 1026, and is a moving track of the metal liquefaction. The piezoelectric body 110 is designed on the outer side of the fixed shaft 102, and as shown in fig. 7, when the flexible screen 106 is not in use, the metal body 108 is in a solid state and only exists in the accommodating cavity 1020. When the capsule 1062 is used, the heating element 104 is powered on to melt the metal body 108 into a liquid state, and the piezoelectric body 110 is powered on to bend and deform into the accommodating cavity 1020 to push the liquid metal body 108 to flow into the capsule 1062. The metal body 108 is then cured to form a support in use. It will be appreciated that the piezoelectric body 110 deforms upon energization, compressing the liquefied metal body 108 into the bladder 1062. When the piezoelectric body 110 is carried, when electricity is applied in a reverse direction, the piezoelectric body 110 is deformed in a reverse direction, and the metal body 108 is sucked into the accommodating cavity 1020 of the fixed shaft 102.

The present embodiment provides a terminal of a support structure for a roll screen, as shown in fig. 8, a first side wall 1022, a second side wall 1024 and a heating element 104 are designed in a fixed shaft 102, and the heating element 104 is a resistance wire. As shown in fig. 8, the heating elements 104 within the fixed axis 102 are secured to the first and

second sidewalls

1022, 1024. The first and

second sidewalls

1022, 1024 are connected to the positive and negative poles of the power source, respectively. Upon energization, the first and

second sidewalls

1022, 1024 and the heating element 104 operate to liquefy the metal body 108 and upon de-energization, the metal body 108 solidifies.

As shown in fig. 10, in some embodiments, flexible screen 106 is free of other support structures near the edges, and is supported solely by metal body 108. In other embodiments, as shown in fig. 12, there is no other support structure in the middle of flexible screen 106, relying solely on metal body 108 for support.

3. Mode switching:

this embodiment provides a support structure terminal of curling screen, when needs play a game or audio-visual experience goes on and when not using, metal body 108 is solid-state, mainly plays the supporting role. When a game needs to be played or video and audio experience is started and ended, the controller 1068 controls the heating element 104 hiding the flexible area to be electrified, so that the metal body 108 under the screen is liquefied, the power mechanism smoothly pulls out and retracts the flexible screen 106, and the flexible switching between a large screen and a small screen is achieved. At the same time, the reel 100 generates a pressing force on the metal body 108 in the vacuum bladder 1062, and the piezoelectric body 110 deforms in the opposite direction and the pressing force of the reel 100 causes the metal body 108 to smoothly flow back to the receiving cavity 1020 of the fixed shaft 102.

4. The working principle of the metal body 108 is as follows:

this embodiment provides a support structure terminal for a roll-up screen with important structures, namely a metal body 108 and a piezoelectric body 110. As shown in fig. 15, the metal body 108 has a low melting point, generally lower than 40 ℃, and is in an original state at normal temperature, i.e., a solid state, which has rigidity and can function as a support. When the metal body 108 is heated by electricity, the metal body is in a molten liquid state, namely a moving state, and the metal body has flexibility and fluidity and can move flexibly at the bending structure part. When de-energized, the metal body 108 cools to a solid state, rigid, and capable of supporting in a flat plane. As shown in fig. 13, 14, and 16, in the use mode, the piezoelectric body 110 after the energization is deformed to press the liquefied metal body 108, and flows into the capsule 1062. When the portable electric tool is carried, electricity is applied in the reverse direction to deform the piezoelectric body 110 in the reverse direction, and the liquefied metal body 108 is sucked into the accommodating cavity 1020 of the fixed shaft 102.

The implementation mode of the specific embodiment has the following beneficial effects: big small screen switches, and bearing structure's design prevents that the mistake from touching to the outward appearance and the good experience that make the screen extremely feel.

Other configurations, such as cameras, speakers, etc., and operations of electronic devices according to embodiments of the present application are known to those of ordinary skill in the art and will not be described in detail herein.

In the description herein, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.

Claims

1. A display module, comprising:

a reel;

the fixed shaft is arranged at an interval with the scroll, a containing cavity is arranged on the fixed shaft, and a metal body is arranged in the containing cavity;

the heating element is arranged in the accommodating cavity and used for heating the metal body;

a flexible screen wound on the reel, the flexible screen comprising:

a flexible display layer;

the bag is arranged on the non-display side of the flexible display layer and communicated with the accommodating cavity;

the reel rotates to drive the flexible screen to be unfolded, the heating element heats and melts the metal body, the melted metal body flows into the bag, the heating element stops heating, and the metal body is solidified to form support for the flexible display layer.

2. The display module assembly of claim 1, wherein the display module assembly further comprises:

the piezoelectric body is arranged on one side, far away from the scroll, of the accommodating cavity, and in the power-on state, the piezoelectric body bends and deforms towards the accommodating cavity to push the melted metal body to flow to the bag, or in the power-on reverse state, the piezoelectric body bends and deforms towards the outside of the accommodating cavity to attract the metal body to flow from the bag to the accommodating cavity.

3. The display module according to claim 1 or 2,

the balloon is a vacuum balloon.

4. The display module of claim 3,

the inside of the bag is provided with a plurality of bag cavities, and the length direction of each bag cavity is arranged along the direction from the reel to the fixed shaft.

5. The display module of claim 4,

a flexible diaphragm is arranged between the adjacent capsule cavities.

6. The display module of claim 3, wherein the bladder comprises:

the first capsule wall is arranged on one side of the capsule close to the flexible display layer;

a second bladder wall disposed on a side of the bladder distal from the flexible display layer;

the first capsule wall and the second capsule wall are both electric conductors.

7. The display module assembly of claim 6, wherein the flexible screen further comprises:

the conductive adhesive is arranged between the flexible display layer and the first capsule wall, and the first capsule wall is grounded through the conductive adhesive and the flexible display layer;

a flexible circuit board electrically connected with the second bladder wall;

the controller is electrically connected with the flexible circuit board, electrically connected with the second capsule wall through the flexible circuit board and used for controlling the first capsule wall and the second capsule wall to heat the metal body.

8. The display module according to claim 1 or 2,

the accommodating cavity of the fixed shaft is provided with a first side wall and a second side wall, the first side wall and the second side wall are both electric conductors, the first side wall is connected with the positive pole of a power supply, and the second side wall is connected with the negative pole of the power supply;

one end of the heating member is connected to the first side wall, and the other end of the heating member is connected to the second side wall.

9. The display module according to claim 1 or 2,

the metal body includes at least one of: gallium, rubidium, cesium.

10. An electronic device, comprising:

a middle frame;

the display module according to any one of claims 1 to 9, being connected to the middle frame.