CN114203046B - Support assembly, display device and control method thereof - Google Patents
Support assembly, display device and control method thereof Download PDFInfo
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- CN114203046B CN114203046B CN202111561625.1A CN202111561625A CN114203046B CN 114203046 B CN114203046 B CN 114203046B CN 202111561625 A CN202111561625 A CN 202111561625A CN 114203046 B CN114203046 B CN 114203046B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/40—Heating elements having the shape of rods or tubes
- H05B3/54—Heating elements having the shape of rods or tubes flexible
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- Theoretical Computer Science (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
本申请实施例提供一种支撑组件、显示装置及其控制方法，支撑组件用于支撑柔性显示面板。支撑组件包括：卷曲轴，用于令柔性显示面板卷绕于卷曲轴，卷曲轴的轴线沿第一方向延伸，且卷曲轴径向可变形设置；驱动元件，连接于卷曲轴并用于驱动卷曲轴径向变形；检测元件，设置于卷曲轴并用于获取柔性显示面板的应力信息。本申请实施例提供的支撑组件通过改变卷曲轴的径向尺寸，能够改善柔性显示面板的应力情况。
The embodiment of the present application provides a support component, a display device and a control method thereof, wherein the support component is used to support a flexible display panel. The support component includes: a winding shaft, which is used to allow the flexible display panel to be wound around the winding shaft, the axis of the winding shaft extends along a first direction, and the winding shaft is radially deformable; a driving element, which is connected to the winding shaft and is used to drive the winding shaft to deform radially; and a detection element, which is arranged on the winding shaft and is used to obtain stress information of the flexible display panel. The support component provided in the embodiment of the present application can improve the stress condition of the flexible display panel by changing the radial size of the winding shaft.
Description
Technical Field
The present application relates to the field of display devices, and in particular, to a support assembly, a display device, and a control method thereof.
Background
As market demand for flexible displays increases, research and development of various flexible display devices are increasingly paid attention to, for example, a rollable display device which has been in development and use, expansion of a flexible display panel is used to increase visibility, and a small volume after being rolled increases portability. However, when the flexible display panel is wound around the winding shaft, as the number of winding layers increases, the stress between the layers is greater, and the stress may cause the flexible display panel to be poor, affecting the life of the flexible display panel.
Disclosure of Invention
The embodiment of the application provides a support assembly, a display device and a control method thereof, and aims to improve stress applied to a flexible display panel in a curling process.
An embodiment of a first aspect of the present application provides a support assembly for supporting a flexible display panel, the support assembly comprising: the flexible display panel is wound on the winding shaft, the axis of the winding shaft extends along the first direction, and the winding shaft is arranged in a radially deformable manner; the detection element is arranged on the rolling shaft and used for acquiring stress information between the laminated layers in the flexible display panel; and the driving element is connected with the curling shaft and is used for driving the curling shaft to radially deform according to the force information.
According to an embodiment of the first aspect of the present application, the crimping shaft has a wall portion, a receiving chamber defined by the wall portion, and an opening communicating with the receiving chamber, and the material of the wall portion includes an elastic material;
The driving element is communicated with the opening and is used for conveying medium to the accommodating cavity through the opening so as to elastically deform the wall part to change the radial dimension of the rolling shaft.
According to any of the foregoing embodiments of the first aspect of the present application, the driving element is an inflator.
According to any of the foregoing embodiments of the first aspect of the present application, the opening is located at least one end of the rolling shaft in the first direction, the driving element is located at least one side of the rolling shaft in the first direction, and the driving element and the opening are located on the same side of the rolling shaft in the first direction.
According to any of the foregoing embodiments of the first aspect of the present application, the flexible display panel further comprises a heating element located in the receiving cavity and configured to provide heat to the flexible display panel.
According to any of the preceding embodiments of the first aspect of the application, the heating element is arranged at an inner surface of the wall portion facing the receiving chamber.
According to any of the foregoing embodiments of the first aspect of the present application, the plurality of heating elements is distributed along the circumferential direction of the rolling shaft.
According to any of the foregoing embodiments of the first aspect of the present application, the heating element is formed to extend in a first direction.
According to any of the preceding embodiments of the first aspect of the application, the heating element comprises a resistive wire.
According to any one of the foregoing embodiments of the first aspect of the present application, the flexible display panel further includes a processing element, where the processing element is configured to control the driving element to drive the radial deformation of the curling shaft according to the stress information acquired by the detecting element, and/or the processing element is configured to control the heating element to be turned on to provide heat to the flexible display panel according to the stress information.
According to any of the foregoing embodiments of the first aspect of the present application, the processing element is configured to control the driving element to open to increase the radial dimension of the rolling shaft when the stress of the flexible display panel is greater than a first preset value.
According to any of the foregoing embodiments of the first aspect of the present application, when the stress of the flexible display panel is greater than a second preset value, the processing element is configured to control the driving element to be turned on to increase the radial dimension of the rolling shaft, and control the heating element to be turned on together to provide heat to the flexible display panel, where the second preset value is greater than the first preset value.
According to any of the foregoing embodiments of the first aspect of the present application, the processing element is configured to determine a stress difference between an actual stress between the stacked layers in the flexible display panel and a limiting stress value according to the stress information, and when the stress difference is greater than or equal to a first preset difference and less than a second preset difference, control the heating element to be turned on to provide heat to the flexible display panel.
According to any of the foregoing embodiments of the first aspect of the present application, the processing element is further configured to control the driving element to increase the radial dimension of the rolling shaft when the stress difference is greater than or equal to a second preset difference.
According to any one of the foregoing embodiments of the first aspect of the present application, the detecting element is configured to obtain thickness information of the flexible display panel and determine stress information according to the thickness information.
According to any of the foregoing embodiments of the first aspect of the present application, the detection element is an ultrasonic sensor.
According to any one of the foregoing embodiments of the first aspect of the present application, the plurality of detecting elements are plural, and the plural detecting elements are spaced apart along the circumferential direction and/or the first direction of the rolling shaft.
According to any one of the foregoing embodiments of the first aspect of the present application, the outer surface of the rolling shaft is provided with a mounting groove, and the detection element is disposed in the mounting groove. The depth of the mounting groove is greater than or equal to the height of the detection element
Embodiments of the second aspect of the present application also provide a display apparatus, including: the support assembly of any of the embodiments of the first aspect described above; and a flexible display panel connected to the curling shaft and capable of being wound around the curling shaft.
An embodiment of a third aspect of the present application further provides a control method of a display device, where the display device is a display device provided in any one of the foregoing second aspect embodiments, and the control method includes:
stress information between the laminated layers when the flexible display panel is wound on the curling shaft is obtained;
the radial dimension of the driving element driving the rolling shaft is changed according to the stress information.
According to an embodiment of the third aspect of the present application, the support assembly further includes a heating element disposed on the rolling shaft, and the step of causing the driving element to drive the rolling shaft to change the radial dimension according to the stress information further includes: when the stress information is larger than a first preset value, controlling the driving element to be opened so as to increase the radial dimension of the rolling shaft; when the stress information is larger than a second preset value, the driving element is controlled to be started to increase the radial dimension of the rolling shaft, and the heating element is controlled to be started together to provide heat for the flexible display panel, wherein the second preset value is larger than the first preset value.
According to any one of the foregoing embodiments of the first aspect of the present application, the support assembly further includes a heating element disposed on the rolling shaft, and the step of causing the driving element to drive the rolling shaft to change in radial dimension according to the stress information further includes: and determining a stress difference value between actual stress and a limit stress value between the laminated layers in the flexible display panel according to the stress information, controlling the heating element to be started to provide heat for the flexible display panel when the stress difference value is larger than or equal to a first preset difference value and smaller than a second preset difference value, and controlling the driving element to increase the radial dimension of the rolling shaft when the stress difference value is larger than or equal to the second preset difference value.
In the support assembly provided by the embodiment of the application, the support assembly comprises a rolling shaft, and a driving element and a detecting element which are arranged on the rolling shaft. When the support component is used for the display device and supports the flexible display panel, the detection element can detect stress among the lamination layers in the flexible display panel, and the driving element can be controlled to change the radial dimension of the winding shaft according to the stress among the lamination layers in the flexible display panel, so that the number of layers of the flexible display panel wound on the winding shaft can be changed, and the extrusion stress suffered by each lamination layer of the flexible display panel is changed. Therefore, the support assembly provided by the embodiment of the application can improve the stress condition of the flexible display panel by changing the radial dimension of the rolling shaft.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading the following detailed description of non-limiting embodiments thereof, taken in conjunction with the accompanying drawings in which like or similar reference characters designate the same or similar features.
FIG. 1 is a schematic view of a support assembly according to an embodiment of the first aspect of the present application;
FIG. 2 is a schematic view of a support assembly according to an embodiment of the present application in one state;
FIG. 3 is a schematic view of a support assembly according to an embodiment of the present application in another state;
FIG. 4 is a cross-sectional view of a support assembly provided by an embodiment of the present application;
FIG. 5 is a schematic view of a connection structure of a part of components in a support assembly according to an embodiment of the present application;
fig. 6 is a flowchart of a control method of a display device according to an embodiment of the present application.
Reference numerals illustrate:
10. a support assembly; 20. a flexible display panel;
100. A rolling shaft; 110. a wall portion; 111. an opening; 112. a mounting groove; 120. a receiving chamber;
200. A driving element;
300. A detection element;
400. A heating element;
500. A processing element;
Y, first direction.
Detailed Description
Features and exemplary embodiments of various aspects of the application are described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the application. It will be apparent, however, to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the application by showing examples of the application. In the drawings and the following description, at least some well-known structures and techniques have not been shown in detail in order not to unnecessarily obscure the present application; also, the dimensions of some of the structures may be exaggerated for clarity. Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
In the description of the present application, it is to be noted that, unless otherwise indicated, the meaning of "plurality" is two or more; the terms "upper," "lower," "left," "right," "inner," "outer," and the like are merely used for convenience in describing the present application and to simplify the description, and do not denote or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the present application. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The directional terms appearing in the following description are all directions shown in the drawings and do not limit the specific structure of the embodiment of the present application. In the description of the present application, it should also be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected. The specific meaning of the above terms in the present application can be understood as appropriate by those of ordinary skill in the art.
The inventors have found that in a rollable display device, an expansion of a flexible display panel is used to increase visibility, and that a small volume after crimping increases portability. However, when the flexible display panel is wound around the winding shaft, as the number of winding layers increases, the degree of winding of the flexible display panel increases, the risk of wrinkling increases gradually, and the dislocation size between the film layers in the flexible display panel increases gradually, which may cause delamination risk of the flexible display panel.
The present application has been made to solve the above-mentioned technical problems. For a better understanding of the present application, a supporting assembly, a display device and a control method thereof according to an embodiment of the present application are described in detail with reference to fig. 1 to 6.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a support assembly 10 according to a first embodiment of the application in a use state.
As shown in fig. 1, the support assembly 10 according to the embodiment of the first aspect of the present application is used for supporting a flexible display panel 20, and the support assembly 10 includes: a rolling shaft 100 for winding the flexible display panel 20 around the rolling shaft 100, wherein an axis of the rolling shaft 100 extends along a first direction X, and the rolling shaft 100 is radially deformable; a sensing element 300 provided to the rolling shaft 100 and used for acquiring stress information between the stacked layers in the flexible display panel 20; a driving member 200 connected to the crimping shaft 100 and configured to drive radial deformation of the crimping shaft 100 according to stress information.
In the present application, stress information between the stacks in the flexible display panel 20 means: when the flexible display panel 20 is wound around the winding shaft 100, two or more layers of flexible display panels 20 are stacked on the winding shaft 100, and stress information between at least two layers of flexible display panels 20 stacked on each other is stress information between stacked layers of the flexible display panel 20.
In the support assembly 10 provided in the embodiment of the present application, the support assembly 10 includes a rolling shaft 100, and a driving element 200 and a detecting element 300 provided to the rolling shaft 100. When the support assembly 10 is used for a display device and supports the flexible display panel 20, the detecting element 300 can detect stress between the stacked layers in the flexible display panel 20, and the driving element 200 can be controlled to change the radial dimension of the winding shaft 100 according to the stress between the stacked layers in the flexible display panel 20, so that the number of layers of the flexible display panel 20 wound on the winding shaft 100 can be changed, and the compressive stress to which each stacked layer of the flexible display panel 20 is subjected can be changed. The support assembly 10 provided by the embodiment of the present application can improve the stress condition of the laminate in the flexible display panel 20 by changing the radial dimension of the rolling shaft 100.
In other embodiments, the degree of compaction of the flexible display panel 20 wound around the crimping shaft 100 may also be varied, thereby varying the tensile stress to which the flexible display panel 20 is subjected. For example, when the detecting element 300 detects that the stress of the flexible display panel 20 is too large, the driving element 200 can also reduce the radial dimension of the rolling shaft 100 appropriately, so that the flexible display panel 20 is loosely rolled on the rolling shaft 100, and further reduce the tensile stress to which the flexible display panel 20 is subjected.
In the use process of the embodiment of the application, when the flexible display panel 20 is wound on the winding shaft 100, the detecting element 300 can detect the stress information of the flexible display panel 20, so as to determine whether the stress of each film layer in the flexible display panel 20 is excessive.
Referring to fig. 2 and 3, fig. 2 is a schematic structural view of the support assembly 10 in one state according to the embodiment of the application, and fig. 3 is a schematic structural view of the support assembly 10 in another state according to the embodiment of the application. The radial dimension of the crimp shaft 100 in fig. 3 is greater than the radial dimension of the crimp shaft 100 in fig. 2, and the number of stacked layers of the flexible display panel 20 wound around the crimp shaft 100 in fig. 3 is smaller than the number of stacked layers of the flexible display panel 20 wound around the crimp shaft 100 in fig. 2.
As shown in fig. 2, when the flexible display panel 20 is subjected to excessive stress due to an excessive number of stacked layers, which results in a partially stacked structure, there is a risk of delamination of the screen. As shown in fig. 1 and 3, the radial dimension of the rolling shaft 100 can be increased by the driving element 200, so that the number of layers wound by the flexible display panel 20 is reduced, and thus the stress of the layers in the flexible display panel 20 can be reduced, and the risk of delamination of the screen body is reduced.
Alternatively, the user may adjust the radial dimension of the rolling shaft 100 by himself via the driving member 200 based on the stress information provided by the sensing member 300.
The winding shaft 100 may be disposed in various manners, for example, the winding shaft 100 may have a cylindrical shape, so that the flexible display panel 20 may be wound around the winding shaft 100.
There are various arrangements in which the curl shaft 100 is radially variable, for example, the curl shaft 100 includes a plurality of sections divided in the axial direction thereof, and the distance between the plurality of sections is adjustable so that the radial direction of the curl shaft 100 is variable.
Referring to fig. 1 to 4, fig. 4 is a cross-sectional view of a support assembly 10 according to an embodiment of the application.
In other alternative embodiments, as shown in fig. 1 to 4, the rolling shaft 100 has a wall portion 110, a receiving chamber 120 defined by the wall portion 110, and an opening 111 communicating with the receiving chamber 120, and the material of the wall portion 110 includes an elastic material; the driving element 200 communicates with the opening 111, and the driving element 200 is configured to convey a medium to the accommodating chamber 120 through the opening 111 to elastically deform the wall portion 110 to change the radial dimension of the rolling shaft 100.
In these alternative embodiments, the drive element 200 may change the radial dimension of the crimp shaft 100 by delivering a medium into the receiving chamber 120 to elastically deform the wall 110 of the crimp shaft 100. The absence of the slit in the elastically deformed wall portion 110 relative to the crimping shaft 100 including the plurality of segments can provide better support to the flexible display panel 20 without snagging on the flexible display panel 20.
The medium is arranged in various ways, for example, the medium is gas, the driving element 200 is an air charging device, and the structure is simple and the operation is convenient. In addition, the medium is gas, and impurities are not easily generated relative to the medium, so that the use of the flexible display panel 20 is not affected by the leakage of the medium in the accommodating cavity 120 or the driving element 200.
Alternatively, the opening 111 is located at least one end of the rolling shaft 100 in the first direction X, the driving element 200 is located at least one side of the rolling shaft 100 in the first direction X, and the driving element 200 and the opening 111 are located at the same side of the rolling shaft 100 in the first direction X. The openings 111 are provided at both ends of the roll shaft 100 in the first direction X such that the openings 111 and the driving element 200 do not affect the flatness of the support surface of the roll shaft 100 for supporting the flexible display panel 20, nor do the openings 111 and the driving element 200 affect the winding of the flexible display panel 20 around the roll shaft 100.
In some alternative embodiments, as shown in fig. 1-4, the support assembly 10 further includes a heating element 400, the heating element 400 being configured to provide heat to the flexible display panel 20. When the heating element 400 heats the flexible display panel 20, the young's modulus of each film structure inside the flexible display panel 20 can be changed, so as to improve the deformability of the flexible display panel 20 and further improve the stress of the flexible display panel 20.
The heating element 400 may be disposed in the receiving chamber 120 of the rolling shaft 100 in various manners. The overall size of the space occupied by the support assembly 10 can be reduced without increasing the overall size of the support assembly 10 by adding the heating element 400, on the one hand, and the heating element 400 located in the accommodating chamber 120 can heat the flexible display panel 20 outside the wall portion 110, on the other hand. In addition, since the wall portion 110 of the rolling shaft 100 is disposed between the heating element 400 and the flexible display panel 20, heat is conducted through the wall portion 110, so that the flexible display panel 20 is heated more uniformly, and damage caused by overlarge heating of the flexible display panel 20 due to direct heating of the flexible display panel 20 by the heating element 400 can be avoided.
The heating element 400 is disposed in the accommodating cavity 120 in various manners, and optionally, the heating element 400 is disposed on the inner surface of the wall portion 110 facing the accommodating cavity 120, so as to improve stability of a relative position between the heating element 400 and the crimping shaft 100, and avoid that the heating effect of the heating element 400 is affected by shaking of the heating element 400 in the accommodating cavity 120.
The number of the heating elements 400 may be plural, as shown in fig. 2 and 3, the heating elements 400 may be surface heating elements 400, the heating elements 400 are in surface-to-surface contact with the inner surface of the crimp shaft 100, and the size of the heating elements 400 is adapted to the size of the inner surface of the crimp shaft 100, so that the heating elements 400 can heat the flexible display panels 20 located at different positions of the crimp shaft 100.
Or the heating elements 400 may be plural, and the plural heating elements 400 are spaced apart along the circumference of the winding shaft 100 so that the heating elements 400 can heat the flexible display panel 20 located at different positions in the circumference of the winding shaft 100. Optionally, the heating element 400 is formed to extend in the first direction X. Further, the extension of the heating element 400 in the first direction X is equal to the extension of the inner surface of the crimp shaft 100 in the first direction X, so that the heating element 400 can heat the flexible display panel 20 located at different positions of the crimp shaft 100 in the first direction X.
The heating element 400 includes, for example, a resistive wire such that the heating element 400 heats the flexible display panel 20 through the resistive wire.
Referring to fig. 5, fig. 5 is a schematic diagram illustrating a connection structure of a portion of components in the support assembly 10 according to an embodiment of the application.
In some alternative embodiments, as shown in fig. 5, the support assembly 10 further includes a processing element 500, where the processing element 500 is configured to obtain stress information obtained by the detecting element 300, and control the driving element 200 to drive the rolling shaft 100 to radially deform according to the stress information, and/or the processing element 500 is configured to obtain stress information obtained by the detecting element 300, and control the heating element 400 to be turned on to provide heat to the flexible display panel 20. For example, the processing element 500 is configured to control the drive element 20 to increase or decrease the radial dimension of the rolled crankshaft 100 based on the stress information. Alternatively, when the processing element 500 determines that the pressure to which the flexible display panel 20 is subjected is excessive according to the stress information, the control increases the radial size of the roll shaft 100 before the next time the flexible display panel 20 is wound on the roll shaft 100, or the control drives the element 200 to increase the radial size of the roll shaft 100.
Optionally, when the stress of the flexible display panel 20 is greater than a first preset value, the processing element 500 is configured to control the driving element 200 to be turned on to increase the radial dimension of the rolling shaft 100, and when the stress of the flexible display panel 20 is greater than a second preset value, the processing element 500 is further configured to control the driving element 200 to be turned on to increase the radial dimension of the rolling shaft 100 and control the heating element 400 to be turned on together to provide heat to the flexible display panel 20.
In these alternative embodiments, the stress of the laminate in the flexible display panel 20 may be improved by merely adjusting the radial dimension of the roll-up shaft 100 when the stress between the laminates in the flexible display panel 20 is small. When the stress between the stacks in the flexible display panel 20 is too great, the stress between the stacks in the flexible display panel 20 may be improved by the curling shaft 100 and the auxiliary heating element 400 together, when the radial dimension of the curling shaft 100 is not enough to completely improve the stress of the stacks in the flexible display panel 20.
In alternative embodiments, it is also possible to compare the stress between the stacks in the flexible display panel 20 with a threshold stress value and adjust the radial dimensions of the rolling shaft 100 and/or the activation of the heating element 400 based on the comparison. The limit stress value is the maximum stress value that the flexible display panel 20 can withstand.
In some alternative embodiments, the processing element 500 is further configured to determine a stress difference between an actual stress between the stacks in the flexible display panel 20 and a limit stress value according to the stress information, and when the stress difference is greater than or equal to a first preset difference and less than a second preset difference, control the heating element 400 to be turned on to provide heat to the flexible display panel 20. When the stress difference is greater than or equal to the second preset difference, the driving element 200 is controlled to increase the radial dimension of the rolling shaft 100.
In these alternative embodiments, the stress between the stacks in the flexible display panel 20 may be tuned by the heating element 400 when the stress between the stacks in the flexible display panel 20 is high. When the stress between the stacked layers in the flexible display panel 20 is excessively high, the stress of the flexible display panel 20 can be adjusted in a wide range by the crimping shaft 100.
The detecting elements 300 may be arranged in a plurality of ways, and in some alternative embodiments, the detecting elements 300 are arranged in a plurality of ways, and the detecting elements 300 are distributed at intervals along the circumferential direction of the curl shaft 100, so that the detecting elements 300 can obtain stress information of the flexible display panel 20 located at different positions along the circumferential direction of the curl shaft 100.
And/or, the plurality of detecting elements 300 are disposed on the rolling shaft 100 along the first direction X, so that the detecting elements 300 can acquire stress information of the flexible display panel 20 located at different positions of the rolling shaft 100 in the first direction X.
In some alternative embodiments, with continued reference to FIG. 4, the outer surface of the crimp shaft 100 may be provided with a mounting slot 112, and the sensing element 300 may be disposed within the mounting slot 112 to enhance stability of the relative position between the sensing element 300 and the crimp shaft 100.
Optionally, the depth of the mounting slot 112 is greater than or equal to the height of the sensing element 300. When the detecting element 300 is mounted in the mounting groove 112, the detecting element 300 does not protrude from the surface of the rolling shaft 100 for supporting the flexible display panel 20, so that the flatness of the surface of the rolling shaft 100 for supporting the flexible display panel 20 is ensured, and the detecting element 300 does not scratch the flexible display panel 20.
There are various ways to obtain stress information by the detecting element 300, and the detecting element 300 may be a pressure sensor, and the pressure sensor is used to obtain the stress information provided by the flexible display panel 20 to the crimping shaft 100, so as to obtain the stress information of the flexible display panel 20.
In other embodiments, the sensing element 300 may also acquire thickness information of the flexible display panel 20 and determine stress information based on the thickness information. When the thickness of the flexible display panel 20 increases, it is explained that the flexible display panel 20 is bent to a large extent, and the flexible display panel 20 has a risk of delamination. At this time, the radial dimension of the rolling shaft 100 can be increased by the driving element 200, the number of layers of the flexible display panel 20 wound on the rolling shaft 100 can be reduced, the bending degree of the rolling shaft 100 can be reduced, the stress of the flexible display panel 20 can be further relieved, and the use effect of the flexible display panel 20 can be improved.
The thickness information of the flexible display panel 20 may be thickness information of at least one layer of the flexible display panel 20 wound around the winding shaft 100, or thickness information of a designated position on the flexible display panel 20, or thickness information of any position on the flexible display panel 20. Whether the thickness of the flexible display panel 20 is increased may be determined by comparing actual thickness information of the flexible display panel 20 with standard thickness information, which is the thickness of the flexible display panel 20 before being unwound and even before being disposed on the support assembly 10.
Alternatively, the flexible display panel 20 may be directly wound on the winding shaft 100. Or in other alternative embodiments, the support assembly 10 further includes a support plate connected to the crimping shaft 100, the support plate being used to support the flexible display panel 20 such that the flexible display panel 20 is wound around the crimping shaft 100 under the driving of the support plate. Alternatively, the support plate may include a flexible support layer for providing flexible support to the flexible display panel 20. The support plate may further include a rigid support layer laminated with the flexible support layer, through which the structural strength of the support plate 200 can be improved, so that the support plate provides better support to the flexible display panel 20. The material of the rigid support layer may comprise a metallic material such as steel sheet.
An embodiment of the second aspect of the present application provides a display device including the support assembly 10 of any of the above embodiments and the flexible display panel 20, the flexible display panel 20 being connected to the crimping shaft 100 and being capable of being wound around the crimping shaft 100. For example, the display device has a first state in which the flexible display panel 20 is in an unfolded state and a second state in which at least a part of the flexible display panel 20 is wound around the winding shaft 100.
In the display device provided by the embodiment of the application, when the flexible display panel 20 is wound on the winding shaft 100, the detecting element 300 disposed on the winding shaft 100 can obtain stress information between the stacked layers in the flexible display panel 20, for example, the detecting element 300 can obtain thickness information of the stacked layers in the flexible display panel 20, and determine the stress information between the stacked layers in the flexible display panel 20 according to the thickness information. When the stress to which the flexible display panel 20 is subjected is excessive, the radial direction of the rolling shaft 100 may be increased by the driving element 200, so that the number of layers in which the flexible display panel 20 is rolled on the rolling shaft 100 may be changed, the degree of rolling of the flexible display panel 20 may be reduced, and the stress condition of the flexible display panel 20 may be improved.
Referring to fig. 6, fig. 6 is a flowchart illustrating a control method of a display device according to an embodiment of the application. The display device may be any one of the embodiments of the second aspect described above,
As shown in fig. 6, and referring to the support assembly 10 shown in fig. 1 to 5, the control method of the display device includes:
Step S01: stress information between the respective laminates when the flexible display panel 20 is wound on the winding shaft 100 is acquired.
Alternatively, thickness information of the laminate in the flexible display panel 20 may be acquired in step S01, and stress information thereof may be determined according to the thickness information. For example, it may be determined whether the film thickness of the flexible display panel 20 increases based on comparison of the thickness information of the laminate in the flexible display panel 20 with the standard thickness information
Step S02: the driving element 200 is caused to drive the radial dimension of the rolling shaft 100 to vary according to the stress information.
In the control method provided by the embodiment of the application, the radial dimension of the rolling shaft 100 can be adjusted according to the stress information of the flexible display panel 20, so that the number of layers of the flexible display panel 20 wound on the rolling shaft 100 can be changed, and the degree of curling of the flexible display panel 20 can be changed to improve the stress of the flexible display panel 20.
In some alternative embodiments, as described above, when the support assembly 10 includes the heating element 400, it may include in step S02: when the stress information is greater than the first preset value, the driving element 200 is controlled to be opened to increase the radial dimension of the rolling shaft 100; when the stress information is greater than a second preset value, the driving element 200 is controlled to be turned on to increase the radial dimension of the rolling shaft 100, and the heating element 400 is controlled to be turned on together to supply heat to the flexible display panel 20, the second preset value being greater than the first preset value.
In these alternative embodiments, when the stress between the stacks in the flexible display panel 20 is small, the stress experienced by the stacks in the flexible display panel 20 may be improved by merely adjusting the radial dimension of the rolling shaft 100. When the stress between the stacks in the flexible display panel 20 is too great, it is not enough to completely improve the stress to which the stacks in the flexible display panel 20 are subjected by adjusting the radial dimension of the rolling shaft 100, the stress to which the stacks in the flexible display panel 20 are subjected can be improved by the rolling shaft 100 and the auxiliary heating element 400 together.
In some alternative embodiments, step S02 may further include: the stress difference between the actual stress between the stacks in the flexible display panel 20 and the limit stress value is determined according to the stress information, and when the stress difference is greater than or equal to the first preset difference and less than the second preset difference, the heating element 400 is controlled to be turned on to supply heat to the flexible display panel 20, and when the stress difference is greater than or equal to the second preset difference, the driving element 200 is controlled to increase the radial dimension of the rolling shaft 100.
In these alternative embodiments, the stress experienced by the stacks in the flexible display panel 20 may be tuned by the heating element 400 when the stress between the stacks in the flexible display panel 20 is high. When the stress between the stacks in the flexible display panel 20 is too high, the stress to which the stacks in the flexible display panel 20 are subjected can be adjusted over a wide range by the crimping shaft 100.
While the application has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the application. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.
Claims (16)
1. A support assembly for supporting a flexible display panel, the support assembly comprising:
The flexible display panel is wound on the winding shaft, the axis of the winding shaft extends along a first direction, the winding shaft is arranged in a radial deformable manner, the winding shaft is provided with a wall part, a containing cavity formed by encircling the wall part and an opening communicated with the containing cavity, and the material of the wall part comprises an elastic material;
a detection element disposed on the curl shaft and configured to obtain stress information between the stacks in the flexible display panel;
A driving element connected to the crimping shaft and used for driving the crimping shaft to radially deform according to the stress information, the driving element is communicated with the opening, and the driving element is used for conveying medium to the accommodating cavity through the opening so as to elastically deform the wall part to change the radial dimension of the crimping shaft;
a heating element located in the accommodating chamber and used for providing heat to the flexible display panel;
The processing element is used for controlling the driving element to drive the radial deformation of the curling shaft according to the stress information acquired by the detection element, and/or controlling the heating element to be started according to the stress information so as to provide heat for the flexible display panel, controlling the driving element to be started so as to increase the radial dimension of the curling shaft when the stress of the flexible display panel is larger than a first preset value, and controlling the driving element to be started so as to increase the radial dimension of the curling shaft when the stress between laminated layers in the flexible display panel is larger than a second preset value, and controlling the heating element to be started together so as to provide heat for the flexible display panel.
2. The support assembly of claim 1, wherein the drive element is an inflator.
3. The support assembly of claim 1, wherein the opening is located at least one end of the crimping shaft in the first direction, the drive element is located at least one side of the crimping shaft in the first direction, and the drive element and the opening are located on the same side of the crimping shaft in the first direction.
4. The support assembly of claim 1, wherein the heating element is disposed on an inner surface of the wall portion that faces the receiving cavity.
5. The support assembly of claim 1, wherein the plurality of heating elements is distributed along a circumference of the rolling shaft.
6. The support assembly of claim 1, wherein the heating element is elongated in the first direction.
7. The support assembly of claim 1, wherein the heating element comprises a resistance wire.
8. The support assembly of claim 1, wherein the processing element is configured to determine a stress difference between an actual stress between stacks in the flexible display panel and a threshold stress value based on the stress information, and to control the heating element to turn on to provide heat to the flexible display panel when the stress difference is greater than or equal to a first predetermined difference and less than a second predetermined difference.
9. The support assembly of claim 8, wherein the processing element is further configured to control the drive element to increase the radial dimension of the crimp shaft when the stress differential is greater than or equal to the second preset differential.
10. The support assembly of claim 1, wherein the sensing element is configured to obtain thickness information of the flexible display panel and determine the stress information based on the thickness information.
11. The support assembly of claim 1, wherein the detection element is an ultrasonic sensor.
12. The support assembly of claim 1, wherein the plurality of sensing elements is a plurality of the sensing elements spaced apart along a circumferential direction and/or a first direction of the rolling shaft.
13. The support assembly of claim 1, wherein an outer surface of the crimp shaft is provided with a mounting groove, and the sensing element is disposed within the mounting groove.
14. The support assembly of claim 13, wherein the depth of the mounting groove is greater than or equal to the height of the detection element.
15. A display device, comprising:
the support assembly of any one of claims 1-14;
and a flexible display panel connected to the winding shaft and capable of being wound around the winding shaft.
16. A control method of a display device according to claim 15, wherein the display device is the display device, the support assembly further includes a heating element provided to the crimping shaft, the control method comprising:
obtaining stress information between the laminates when the flexible display panel is wound on the winding shaft;
Causing the drive element to drive a radial dimension of the crimp shaft to vary according to the stress information;
The step of causing the drive element to drive a change in a radial dimension of the crimp shaft in accordance with the stress information further comprises: when the stress information is larger than a first preset value, controlling the driving element to be started so as to increase the radial dimension of the curling shaft; when the stress information is larger than a second preset value, controlling the driving element to be started to increase the radial dimension of the curling shaft, and controlling the heating elements to be started together to provide heat for the flexible display panel, wherein the second preset value is larger than the first preset value;
Or determining a stress difference value between actual stress and a limit stress value between the laminated layers in the flexible display panel according to the stress information, controlling the heating element to be started to provide heat for the flexible display panel when the stress difference value is larger than or equal to a first preset difference value and smaller than a second preset difference value, and controlling the driving element to increase the radial dimension of the curling shaft when the stress difference value is larger than or equal to the second preset difference value.
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