CN111192525B - Flexible display device and bending control method thereof - Google Patents
Flexible display device and bending control method thereof Download PDFInfo
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- CN111192525B CN111192525B CN202010130092.0A CN202010130092A CN111192525B CN 111192525 B CN111192525 B CN 111192525B CN 202010130092 A CN202010130092 A CN 202010130092A CN 111192525 B CN111192525 B CN 111192525B
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- 238000000429 assembly Methods 0.000 claims 1
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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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Abstract
The invention provides a flexible display device and a bending control method thereof, wherein a bending control assembly can detect the stress or the bending angle of a bent part of the flexible display device when the flexible display device is bent, and actively control the length of an elastic assembly in the bending direction according to the stress or the bending angle, namely actively control two adjacent supporting pieces in different supporting piece groups to separate corresponding distances, so that the flexible display panel cannot be subjected to reverse force applied to the flexible display panel by a supporting structure, or the flexible display panel is subjected to smaller reverse force applied to the flexible display panel by the supporting structure. And, support piece behind the separation can make bearing structure dodge to the direction of keeping away from flexible display panel, has given the sufficient accommodation space in flexible display panel bendable region to make flexible display panel when buckling, can not receive bearing structure's tensile and overstock, thereby avoid or reduced the production of outward appearance phenomena such as crease, arch.
Description
Technical Field
The invention relates to the technical field of displays, in particular to a flexible display device and a bending control method thereof.
Background
With the development of technology, flexible display devices have become a new trend. The existing bendable display device can be applied to various electronic equipment such as a folding mobile phone, so that the sense organ experience of a user is provided, and the use comfort is enhanced. However, after the conventional bendable display device is bent for multiple times, the appearance phenomena such as creases and bulges are easily generated in the bending area, and the display effect is greatly influenced.
Disclosure of Invention
In view of this, the present invention provides a flexible display device and a bending control method thereof, so as to solve the problem that after the bendable display device is bent for multiple times, the bending region is prone to generate appearance such as creases and protrusions.
In order to achieve the purpose, the invention provides the following technical scheme:
a flexible display device comprises a flexible display panel, a support structure and a bending control assembly;
the flexible display panel comprises a bendable region and non-bendable regions positioned at two sides of the bendable region;
the supporting structure is positioned on the back of the flexible display panel and comprises a folding part and supporting parts positioned on two sides of the folding part, the folding part is arranged corresponding to the bendable region, and the supporting parts are arranged corresponding to the non-bendable region;
the folding part comprises a plurality of support member groups, the support member groups are sequentially arranged in the bending direction of the folding part, each support member group comprises at least one support member, and two adjacent support members in different support member groups are elastically connected through at least one elastic assembly;
the bending control assembly is used for detecting the stress or the bending angle of the bending part of the flexible display device when the flexible display device is bent, and controlling the length of the elastic assembly in the bending direction according to the stress or the bending angle so as to control two adjacent supporting pieces in different supporting piece groups to be separated by corresponding distances.
A bending control method of a flexible display device is applied to the flexible display device and comprises the following steps:
detecting the magnitude of stress or bending angle when the flexible display device is bent;
and controlling the length of the elastic assembly in the bending direction according to the stress or the bending angle so as to control the separation of two adjacent supporting pieces in different supporting piece groups by corresponding distances.
Compared with the prior art, the technical scheme provided by the invention has the following advantages:
according to the flexible display device and the bending control method thereof provided by the invention, the bending control assembly can detect the stress or the bending angle of the bending part of the flexible display device when the flexible display device is bent, and actively controls the length of the elastic assembly in the bending direction according to the stress or the bending angle, namely, actively controls the separation of two adjacent supporting pieces in different supporting piece groups by a corresponding distance, instead of controlling the separation of two adjacent supporting pieces in different supporting piece groups by the force applied to the supporting structure by the flexible display panel, therefore, the flexible display panel cannot be subjected to the reverse force applied to the flexible display panel by the supporting structure, or the reverse force applied to the flexible display panel by the supporting structure is smaller.
And, support piece after because the separation can make bearing structure dodge to the direction of keeping away from flexible display panel, the enough accommodation space in flexible display panel bendable region has been given, thereby make flexible display panel when buckling, can not receive bearing structure's tensile and overstock, and simultaneously, flexible display panel is when not buckling, adjacent support piece does not separate, can realize the effective support to flexible display panel, make flexible display panel can resume primary flat state completely when not buckling, thereby avoid or reduced the crease, the production of outward appearance phenomena such as arch.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic cross-sectional structure diagram of a flexible display device in an unbent state according to an embodiment of the present invention;
fig. 2 is a schematic cross-sectional structure diagram of a flexible display device in a bent state according to an embodiment of the present invention;
fig. 3 is a schematic cross-sectional structure diagram of a flexible display device in a bending state with a small stress or bending angle according to an embodiment of the present invention;
fig. 4 is a schematic cross-sectional view of another flexible display device in a bent state according to an embodiment of the present invention;
FIG. 5 is a schematic cross-sectional view of a spring assembly according to an embodiment of the present invention;
FIG. 6 is a schematic top view of the spring assembly shown in FIG. 5;
FIG. 7 is a schematic cross-sectional view of another elastic member according to an embodiment of the present invention;
FIG. 8 is a schematic top view of the spring assembly of FIG. 7;
FIG. 9 is a schematic structural diagram of a collar according to an embodiment of the present invention;
fig. 10 is a schematic structural view of a buckle according to an embodiment of the present invention;
fig. 11 is a flowchart of a bending control method of a flexible display device according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, so that the above is the core idea of the present invention, and the above objects, features and advantages of the present invention can be more clearly understood. 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 invention.
The embodiment of the invention provides a flexible display device which can be applied to electronic equipment such as a mobile phone, a tablet personal computer and a notebook computer. As shown in fig. 1 and fig. 2, fig. 1 is a schematic cross-sectional structure diagram of a flexible display device provided in an embodiment of the present invention in a non-bent state, and fig. 2 is a schematic cross-sectional structure diagram of the flexible display device provided in an embodiment of the present invention in a bent state, where the flexible display device includes a flexible display panel 1, a support structure 2, and a bending control assembly.
The flexible display panel 1 includes a bendable region 10 and non-bendable regions 11 located at two sides of the bendable region 10. The flexible display panel 1 is a display panel capable of displaying independently, and includes a flexible substrate, and an LED or an OLED and a driving circuit provided on the flexible substrate. In the non-bending state, as shown in fig. 1, the bendable region 10 and the non-bending region 11 are flat, and in the bending state, as shown in fig. 2, the two non-bending regions 11 are bent into an approximate V shape or U shape toward the direction close to the bendable region 10.
The support structure 2 is located at the back of the flexible display panel 1, i.e. the support structure 2 is located at the non-display side of the flexible display panel 1. The supporting structure 2 comprises a folding part 20 and supporting parts 21 positioned on two sides of the folding part 20, the folding part 20 is arranged corresponding to the bendable region 10, the supporting parts 21 are arranged corresponding to the non-bendable region 11, namely, the folding part 20 is arranged on the back of the bendable region 10 correspondingly, the supporting parts 21 are arranged on the back of the non-bendable region 11 correspondingly, so that the bendable region 10 is supported through the folding part 20, and the non-bendable region 11 is supported through the supporting parts 21.
Wherein, the folding portion 20 includes a plurality of support member groups 201, the plurality of support member groups 201 are arranged in sequence in the bending direction X of the folding portion 20, each support member group 201 includes at least one support member 2010, as shown in fig. 2, two adjacent support members 2010 in different support member groups 201 are elastically connected by at least one elastic assembly 2011.
The bending control assembly is configured to detect a stress or a bending angle of a portion of the flexible display device, which is bent when the flexible display device is bent, and control a length of the elastic assembly 2011 in the bending direction X according to the stress or the bending angle, so as to control two adjacent supporting members 2010 in different supporting member groups 201 to be separated by a corresponding distance.
As shown in fig. 1, in the non-bent state, the support members 2010 adjacent to the plurality of support member groups 201 are closely arranged, the gap between the tops and the gap between the bottoms of the adjacent two support members 2010 are approximately equal and approximately 0, and the plurality of support member groups 20 are in a flat state. As shown in fig. 2, in the bending state, a user applies a force to the flexible display device to bend the flexible display device into a V shape or an approximate U shape, and in the process, the bending control assembly detects a stress or a bending angle of a bending portion of the flexible display panel 1, and controls a length of the elastic assembly 2011 in the bending direction X according to the stress or the bending angle, so that the bottom of the supporting member 2010 moves outward to control two adjacent supporting members 2010 in different supporting member groups 201 to separate by a corresponding distance.
Optionally, the flexible display device in the embodiment of the present invention further includes an elastic layer 3 located on a side of the support structure 2 facing away from the flexible display panel 1, so as to support and fix the plurality of support member groups 201 through the elastic layer 3. Wherein, the elastic layer 3 is made of flexible material. Alternatively, one end of the elastic layer 3 is fixed to one support portion 21, and the other end of the elastic layer 3 is fixed to the other support portion 21.
Of course, the invention is not limited thereto, and in other embodiments, the elastic layer 3 may be fixed to the support structure 2 in other ways. Furthermore, in other embodiments, the flexible display device may not include the elastic layer 3, but the fixing of the support member group 201 is achieved by bonding the top surface of the support member group 201 with the flexible display panel 1, or the fixing of the support member group 201 is achieved by interconnecting the top surfaces of the support member group 201.
Because the bending control assembly can detect the stress or the bending angle of the bent portion of the flexible display device when the flexible display device is bent, and actively control the length of the elastic assembly 2011 in the bending direction X according to the stress or the bending angle, that is, actively control the separation of two adjacent supporting members 2010 in different supporting member groups 201 by a corresponding distance, instead of controlling the separation of two adjacent supporting members 2010 in different supporting member groups 201 by the force applied to the supporting structure 2 by the flexible display panel 1, the flexible display panel 1 cannot be subjected to the reverse force applied thereto by the supporting structure 2, or the flexible display panel 1 is subjected to the reverse force applied thereto by the supporting structure 2 and is smaller.
And, support structure 2 can dodge to the direction of keeping away from flexible display panel 1 because support piece 2010 after the separation, given flexible display panel 1 can buckle district 10 sufficient accommodation space, thereby make flexible display panel 1 when buckling, can not receive support structure 2's tensile and overstock, and simultaneously, flexible display panel 1 is when not buckling, adjacent support piece 2010 does not separate, can realize the effective support to flexible display panel 1, make flexible display panel 1 can resume primary flat state completely when not buckling, thereby avoid or reduced the production of the outward appearance phenomena such as crease, arch.
It should be noted that after the bending control assembly controls the adjacent two supporting members 2010 in different supporting member sets 201 to be separated by a corresponding distance, if the stress or bending angle is not changed, the supporting member sets 201 will be maintained in the current separated state, so as to provide support for the flexible display panel 1. However, as the stress or bend angle is further changed, the bend-controlling assembly may control the support 2010 to change accordingly.
It should be further noted that, the larger the force applied by the user to the flexible display device, the larger the stress or bending angle detected by the bending control assembly is, so that the support 2010 can be controlled to be separated by a larger distance according to the larger stress or bending angle, to form a separation distance as shown in fig. 2, and the support 2010 can be controlled to be separated by a smaller distance according to the smaller stress or bending angle, to form a separation distance as shown in fig. 3, where fig. 3 is a schematic cross-sectional structure diagram of the flexible display device provided in the embodiment of the present invention in the bending state with the smaller stress or bending angle. That is, the distance that the supports 2010 are separated is determined by the magnitude of the detected stress or bend angle.
The larger the separation distance of the supporting members 2010 is, the larger the accommodating space for the bendable region 10 of the flexible display panel 1 is, and the larger the stretching force and the overstocking force of the supporting structure 2 applied to the flexible display panel 1 are, so that the appearance phenomena such as the crease, the bulge and the like of the bendable region 10 can be avoided or reduced.
Optionally, the bending control assembly comprises a sensor 40 and a controller, the sensor 40 being adapted to detect the magnitude of the stress or bending angle when the flexible display device is bent. Wherein, when the sensor 40 is a force sensor, the sensor 40 detects the magnitude of the stress at the position thereof and transmits the magnitude data of the stress to the controller. When the sensor 40 is an angle sensor, the sensor 40 detects the bending angle at the position where the sensor is located, and transmits the data of the bending angle to the controller.
The controller is configured to control the length of the elastic assembly 2011 in the bending direction X according to the stress or the bending angle, so as to control two adjacent supporting members 2010 in different supporting member groups 201 to be separated by a corresponding distance. The correspondence relationship between the magnitude of the stress and the length of the elastic member 2011 in the bending direction X is previously set and stored in the controller based on experimental data, and the correspondence relationship between the magnitude of the bending angle and the length of the elastic member 2011 in the bending direction X is also previously set and stored in the controller based on experimental data.
After obtaining the magnitude of the stress or the bending angle detected by the sensor 40, the controller obtains a length value of the corresponding elastic component 2011 in the bending direction X according to a pre-stored correspondence relationship, and controls the length of the elastic component 2011 in the bending direction X to be equal to the length value. When the length of the elastic component 2011 changes, the supporting member 2010 connected with the elastic component is driven to move, so that the supporting members 2010 are separated by a corresponding distance.
Optionally, in the embodiment of the present invention, the number of the sensors 40 is multiple, and each sensor 40 is disposed corresponding to at least one support member group 201, that is, the sensor 40 is disposed corresponding to the back of at least one support member group 201. The controller is also configured to control the support 2010 within the support group 201 at the corresponding position to be separated from the support 2010 within the adjacent support group 201 by a respective distance depending on the magnitude of the stress or bending angle detected by the sensor 40 at the different position. As shown in fig. 2 and 3, since the magnitudes of the stresses or bending angles at different positions are different, the supports 2010 at different positions may be controlled to be separated from the adjacent supports 2010 by different distances according to the stresses or bending angles detected by the sensors 40 at different positions.
Optionally, the sensor 40 in the embodiment of the present invention is located on the flexible display panel 1, and optionally, as shown in fig. 4, fig. 4 is a schematic cross-sectional structure diagram of another flexible display device provided in the embodiment of the present invention in a bent state, and the sensor 40 is located on one side of the flexible display panel 1 close to the support structure 2, and is used for detecting a stress or a bending angle of the flexible display panel 1. Of course, the present invention is not limited thereto, and in other embodiments, the sensor 40 may also be disposed inside the flexible display panel 1, for example, the sensor 40 is fabricated inside the flexible display panel 1 when the flexible display panel 1 is fabricated, and in another embodiment, the sensor 40 may also be disposed on the elastic layer 3, and optionally, as shown in fig. 2, the sensor 40 is disposed on a side of the elastic layer 3 facing away from the supporting structure 40, and is used for detecting the stress or bending angle of the elastic layer 3. Of course, the sensor 40 may also be located on the side of the elastic layer 3 adjacent to the support structure 40.
In the embodiment of the present invention, each support member group 201 includes a plurality of support members 2010, and the plurality of support members 2010 in the same support member group 201 are sequentially arranged in a direction Y perpendicular to the flexible display panel 1, as shown in fig. 2 and fig. 3, taking an example that each support member group 201 includes 3 support members 2010. Each support 2010 is elastically connected to an adjacent support 2010 through an elastic member 2011, and a plurality of elastic members 2011 respectively connected to a plurality of supports 2010 in the same support group 201 are sequentially arranged in a direction Y perpendicular to the flexible display panel 1. It should be noted that two adjacent supporting members 2010 refer to two adjacent supporting members 2010 located in the same row, such as the supporting member 2010a and the supporting member 2010 b.
Optionally, the plurality of supports in the same support group 201 include a first support 2010c and a second support 2010d, and the first support 2010c is located on a side of the second support 2010d away from the flexible display panel 1. The bending control assembly is further configured to control a length L1 of the elastic assembly 2011 connected to the first support 2010c in the bending direction X to be greater than a length L2 of the elastic assembly 2011 connected to the second support 2010d in the bending direction X according to the magnitude of the stress or the bending angle.
In fig. 2 and 3, only the elastic member 2011 is taken as a spring for explanation, but the present invention is not limited thereto. Alternatively, as shown in fig. 5 to 8, fig. 5 is a schematic cross-sectional structure diagram of an elastic assembly 2011 provided in an embodiment of the present invention, fig. 6 is a schematic top-view structure diagram of the elastic assembly 2011 shown in fig. 5, fig. 7 is a schematic cross-sectional structure diagram of another elastic assembly 2011 provided in an embodiment of the present invention, fig. 8 is a schematic top-view structure diagram of the elastic assembly 2011 shown in fig. 7, the elastic assembly 2011 includes n elastic units 2011a and a plurality of elastic connecting pieces 2011b, and n is an integer greater than 1.
The n elastic units 2011a are sequentially arranged in the bending direction X, and for one elastic assembly 2011, two supporting members 2010 respectively connected to the same elastic assembly 2011 belong to different supporting member groups 201. In addition, in the same elastic assembly 2011, the 1 st elastic unit 2011a is fixedly connected with one 2010 of the two supports 2010, and the nth elastic unit 2011a is fixedly connected with the other 2010 of the two supports 2010; in the 2 nd to n-1 th elastic units 2011a, the adjacent two elastic units 2011a are elastically connected by an elastic connection 2011 b. In this regard, the elastic members 2011 at different positions may have different lengths by controlling the different elastic units 2011a to be separated by different distances.
In the embodiment of the present invention, as shown in fig. 5, for n elastic units 2011a in the same elastic assembly 2011, as shown in fig. 7, the elastic units 2011a have a rectangular structure, and the elastic units 2011a are parallel to each other, or as shown in fig. 5, the elastic units 2011a have a concave structure, and the elastic units 2011a are sequentially nested, so that the plurality of elastic units 2011a can be tightly arranged in a non-bent state, so that the supporting members 2010 can be tightly arranged, and can be separated from each other in a bent state, so that the supporting members 2010 can be separated by a corresponding distance. Of course, in other embodiments of the present invention, the mutually parallel elastic units 2011a may also be parallelogram, rhombus, or the like, and the sequentially nested elastic units 2011a may also be semi-ring, crescent, or the like.
Alternatively, the elastic connection 2011b in the embodiment of the present invention includes a spring, a collar, a snap, or the like. Fig. 9 is a schematic structural diagram of a collar according to an embodiment of the present invention, and fig. 9 is a schematic structural diagram of the collar, where the collar includes a plurality of crescent-shaped structures nested in each other and a spring connected between the crescent-shaped structures. Wherein the collar is connected between two adjacent elastic units 2011 a. As shown in fig. 10, fig. 10 is a schematic structural diagram of a buckle according to an embodiment of the present invention, where the buckle includes a first portion S1 and a second portion S2, a cross section of the first portion S1 and a cross section of the second portion S2 are circular, and a plurality of grooves are formed on outer sides of the first portion S1 and the second portion S2 and spaced apart from each other, so that when the first portion S1 and the second portion S2 overlap, the first portion S1 and the second portion S2 are fastened and fixed.
In the embodiment of the present invention, the elastic unit 2011a is an electromagnet, that is, a magnet capable of generating a magnetic field after being energized. The bending control assembly is configured to apply a current with a corresponding magnitude and direction to the elastic units 2011a according to the magnitude of the stress or the bending angle, so that the elastic units 2011a generate a magnetic field with a corresponding magnitude and direction, so that an attractive force or a repulsive force with a corresponding magnitude is generated between adjacent elastic units 2011a through the magnetic field, a distance between adjacent elastic units 2011a is controlled, and a length of the elastic assembly 2011 in the bending direction X is controlled. Optionally, the controls in the bend-controlling assembly are connected to multiple resilient units 2011a for applying current of corresponding magnitude and direction to different resilient units 2011 a.
When the current directions in the two adjacent elastic units 2011a are the same, the larger the current is applied to the two adjacent elastic units 2011a, the larger the repulsive force between the two adjacent elastic units 2011a is, the larger the distance between the two elastic units 2011a is, and the larger the distance between the two adjacent supports 2010 is. When the current directions in the two adjacent elastic units 2011a are opposite, the larger the current applied to the two adjacent elastic units 2011a, the larger the attraction force between the two adjacent elastic units 2011a, the smaller the distance between the two elastic units 2011a, and the smaller the distance separating the two adjacent supports 2010.
It should be noted that the elastic modulus of the different elastic connecting members 2011b can be the same, so that the different elastic connecting members 2011b can be extended by the same distance by the same current control, so that the supports 2010 with the different elastic connecting members 2011b are separated by the same distance.
In the embodiment of the present invention, the length of the elastic assembly 2011 in the bending direction X is controlled only in an electromagnetic control manner, which is not limited thereto, and in other embodiments, the length of the elastic assembly 2011 in the bending direction X may also be controlled in a mechanical control manner, which is not described herein again.
An embodiment of the present invention further provides a method for controlling bending of a flexible display device, which is applied to the flexible display device provided in any of the above embodiments, as shown in fig. 11, where fig. 11 is a flowchart of the method for controlling bending of a flexible display device provided in an embodiment of the present invention, and the method for controlling bending of a flexible display device includes:
s101: detecting the magnitude of stress or bending angle when the flexible display device is bent;
s102: and according to the stress or the bending angle, controlling the length of the elastic assembly in the bending direction so as to control the separation of two adjacent supporting pieces in different supporting piece groups by corresponding distances.
In the embodiment of the invention, when the flexible display device is bent, the stress or the bending angle of the bent part of the flexible display device can be detected, and the length of the elastic assembly in the bending direction is controlled according to the stress or the bending angle, so that two adjacent supporting pieces in different supporting piece groups are controlled to be separated by a corresponding distance.
As shown in fig. 1, in the non-bent state, the support members 2010 adjacent to the plurality of support member groups 201 are closely arranged, the gap between the tops and the gap between the bottoms of the adjacent two support members 2010 are approximately equal and approximately 0, and the plurality of support member groups 20 are in a flat state. As shown in fig. 2, in the bending state, a user applies a force to the flexible display device to bend the flexible display device into a V shape or an approximately U shape, and in the process, the magnitude of the stress or the bending angle of the bent portion of the flexible display panel 1 is detected, and the length of the elastic assembly 2011 in the bending direction X is controlled according to the magnitude of the stress or the bending angle, so that the bottom of the support 2010 moves outward to control the two adjacent support 2010 in different support group 201 to be separated by a corresponding distance.
In the embodiment of the present invention, when the flexible display device is bent, according to the magnitude of the stress or the bending angle, the length of the elastic assembly 2011 in the bending direction X may be actively controlled, that is, the adjacent two support pieces 2010 in different support piece groups 201 are actively controlled to be separated by a corresponding distance, instead of controlling the adjacent two support pieces 2010 in different support piece groups 201 to be separated by the force applied by the flexible display panel 1 to the support structure 2, so that the flexible display panel 1 is not subjected to the reverse force applied by the support structure 2, or the flexible display panel 1 is subjected to the reverse force applied by the support structure 2 to be smaller.
And, support structure 2 can dodge to the direction of keeping away from flexible display panel 1 because support piece 2010 after the separation, given flexible display panel 1 can buckle district 10 sufficient accommodation space, thereby make flexible display panel 1 when buckling, can not receive support structure 2's tensile and overstock, and simultaneously, flexible display panel 1 is when not buckling, adjacent support piece 2010 does not separate, can realize the effective support to flexible display panel 1, make flexible display panel 1 can resume primary flat state completely when not buckling, thereby avoid or reduced the production of the outward appearance phenomena such as crease, arch.
Alternatively, in an embodiment of the present invention, as shown in fig. 5 and 7, the elastic assembly 2011 includes n elastic units 2011a and a plurality of elastic connectors 2011b, where the elastic units 2011a are electromagnets, and when the elastic units 2011 control the length of the elastic assembly 2011 in the bending direction according to the magnitude of the stress or the bending angle includes:
according to the magnitude of the stress or the bending angle, a current with a corresponding magnitude and direction is applied to the elastic units 2011a, so that the elastic units 2011a generate magnetic fields with a corresponding magnitude and direction, and attraction or repulsion with a corresponding magnitude is generated between the adjacent elastic units 2011a through the magnetic fields, so that the distance between the adjacent elastic units 2011a is controlled, and the length of the elastic assembly 2011 in the bending direction X is controlled.
When the current directions in the two adjacent elastic units 2011a are the same, the larger the current is applied to the two adjacent elastic units 2011a, the larger the repulsive force between the two adjacent elastic units 2011a is, the larger the distance between the two elastic units 2011a is, and the larger the distance between the two adjacent supports 2010 is. When the current directions in the two adjacent elastic units 2011a are opposite, the larger the current applied to the two adjacent elastic units 2011a, the larger the attraction force between the two adjacent elastic units 2011a, the smaller the distance between the two elastic units 2011a, and the smaller the distance separating the two adjacent supports 2010.
In an embodiment of the present invention, as shown in fig. 2, the plurality of supporting members in the same supporting member group 201 include a first supporting member 2010c and a second supporting member 2010d, and in this case, controlling the length of the elastic member 2011 in the bending direction X according to the magnitude of the stress or the bending angle includes:
according to the magnitude of the stress or the bending angle, the length L1 of the elastic assembly 2011 connected with the first support 2010c in the bending direction X is controlled to be larger than the length of the elastic assembly 2011 connected with the second support 2010d in the bending direction X.
In an embodiment of the present invention, the number of the sensors 40 is multiple, and each sensor 40 is disposed corresponding to at least one support member group 201, and when the length of the elastic component 2011 in the bending direction is controlled according to the magnitude of the stress or the bending angle, the method includes:
according to the stress or the bending angle at different positions, the elastic assembly 2011 at the corresponding position is controlled to have a corresponding length in the bending direction X, so that the support 2010 in the support group 201 at the corresponding position is separated from the support 2010 in the adjacent support group 201 by a corresponding distance.
As shown in fig. 2 and 3, since the magnitudes of the stresses or bending angles at different positions are different, the supports 2010 at different positions may be controlled to be separated from the adjacent supports 2010 by different distances according to the stresses or bending angles detected by the sensors 40 at different positions.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (13)
1. A flexible display device is characterized by comprising a flexible display panel, a support structure and a bending control assembly;
the flexible display panel comprises a bendable region and non-bendable regions positioned at two sides of the bendable region;
the supporting structure is positioned on the back of the flexible display panel and comprises a folding part and supporting parts positioned on two sides of the folding part, the folding part is arranged corresponding to the bendable region, and the supporting parts are arranged corresponding to the non-bendable region;
the folding part comprises a plurality of support member groups, the support member groups are sequentially arranged in the bending direction of the folding part, each support member group comprises at least one support member, and two adjacent support members in different support member groups are elastically connected through at least one elastic assembly;
the bending control assembly is used for detecting the stress or the bending angle of the bending part of the flexible display device when the flexible display device is bent, and controlling the length of the elastic assembly in the bending direction according to the stress or the bending angle so as to control two adjacent supporting pieces in different supporting piece groups to be separated by corresponding distances.
2. The flexible display device according to claim 1, wherein the support member group comprises a plurality of support members, and the plurality of support members in the same support member group are sequentially arranged in a direction perpendicular to the flexible display panel;
a plurality of elastic components respectively connected with a plurality of supporting pieces in the same supporting piece group are sequentially arranged in a direction vertical to the flexible display panel;
the plurality of supports in the same support group comprise a first support and a second support, and the first support is positioned on one side of the second support far away from the flexible display panel;
the bending control component is also used for controlling the length of the elastic component connected with the first supporting piece in the bending direction to be larger than the length of the elastic component connected with the second supporting piece in the bending direction according to the stress or the bending angle.
3. The flexible display device according to claim 1 or 2, wherein the elastic assembly comprises n elastic units and a plurality of elastic connectors, n being an integer greater than 1;
for one elastic assembly and two supporting pieces which are respectively connected with the elastic assembly and belong to different supporting piece groups, the n elastic units are sequentially arranged in the bending direction; the 1 st elastic unit is fixedly connected with one of the two supporting pieces, and the nth elastic unit is fixedly connected with the other of the two supporting pieces; and in the 2 nd elastic unit to the n-1 st elastic unit, two adjacent elastic units are elastically connected through the elastic connecting piece.
4. The flexible display device of claim 3, wherein the elastic unit is an electromagnet;
the bending control assembly is used for applying currents with corresponding sizes and directions to the elastic units according to the stress or the bending angle, so that the elastic units generate magnetic fields with corresponding sizes and directions, attraction or repulsion with corresponding sizes is generated between adjacent elastic units through the magnetic fields, the distance between the adjacent elastic units is controlled, and the length of the elastic assembly in the bending direction is controlled.
5. A flexible display device according to claim 3, wherein said elastic connection comprises a spring;
or, the lantern ring comprises a plurality of crescent structures which are nested with each other and a spring connected between the crescent structures, and the lantern ring is connected with two adjacent elastic units;
or the buckle comprises a first part and a second part, the cross section of the first part and the cross section of the second part are circular, and the outer sides of the first part and the second part are provided with a plurality of grooves which are arranged at intervals so as to realize the buckling fixation of the first part and the second part when the first part and the second part are overlapped.
6. The flexible display device of claim 3, wherein for the n elastic units in the same elastic assembly, the elastic units are parallel to each other, or the elastic units are nested in sequence.
7. The flexible display device of claim 1, wherein the bend-control assembly comprises a sensor and a controller;
the sensor is used for detecting the stress or the bending angle when the flexible display device is bent;
the controller is used for controlling the length of the elastic component in the bending direction according to the stress or the bending angle so as to control two adjacent supporting pieces in different supporting piece groups to be separated by corresponding distances.
8. The flexible display device of claim 7, wherein the number of the sensors is plural, and each of the sensors is disposed corresponding to at least one of the support member groups;
the controller is further used for controlling the supporting pieces in the supporting piece group at the corresponding position to be separated from the supporting pieces in the adjacent supporting piece group by corresponding distances according to the stress or bending angle detected by the sensors at different positions.
9. The flexible display device according to claim 7, wherein the sensor is located on the flexible display panel for detecting a stress or a bending angle of the flexible display panel;
or, the flexible display device further comprises an elastic layer located on one side of the support structure, which is away from the flexible display panel, and the sensor is located on the elastic layer and used for detecting the stress or the bending angle of the elastic layer.
10. A method for controlling bending of a flexible display device, which is applied to the flexible display device according to any one of claims 1 to 9, comprising:
detecting the magnitude of stress or bending angle when the flexible display device is bent;
and controlling the length of the elastic assembly in the bending direction according to the stress or the bending angle so as to control the separation of two adjacent supporting pieces in different supporting piece groups by corresponding distances.
11. The method of claim 10, wherein when the elastic assembly comprises n elastic units and the elastic units are electromagnets, controlling the length of the elastic assembly in the bending direction according to the magnitude of the stress or the bending angle comprises:
according to the stress or the bending angle, current with corresponding size and direction is applied to the elastic units, so that the elastic units generate magnetic fields with corresponding size and direction, attraction or repulsion with corresponding size is generated between adjacent elastic units through the magnetic fields, the distance between the adjacent elastic units is controlled, and the length of the elastic assembly in the bending direction is controlled.
12. The method of claim 10, wherein when the plurality of supports in the same support group include a first support and a second support, controlling the length of the elastic component in the bending direction according to the magnitude of the stress or the bending angle comprises:
and controlling the length of the elastic component connected with the first supporting piece in the bending direction to be larger than the length of the elastic component connected with the second supporting piece in the bending direction according to the stress or the bending angle.
13. The method of claim 10, wherein controlling the length of the elastic member in the bending direction according to the magnitude of the stress or the bending angle comprises:
and controlling the elastic assemblies at the corresponding positions to have corresponding lengths in the bending direction according to the stress or bending angle at different positions so as to separate the supporting pieces in the supporting piece groups at the corresponding positions from the supporting pieces in the adjacent supporting piece groups by corresponding distances.
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Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113744632B (en) * | 2020-05-28 | 2023-06-23 | 云谷（固安）科技有限公司 | Display module and display device |
| CN112345381A (en) * | 2020-10-28 | 2021-02-09 | 合肥维信诺科技有限公司 | Flexible display panel and dynamic bending test device thereof |
| CN112233557B (en) * | 2020-10-29 | 2022-06-24 | 厦门天马微电子有限公司 | Flexible display device and control method thereof |
| CN112365804B (en) * | 2020-11-26 | 2022-11-22 | 武汉天马微电子有限公司 | Display module and display device |
| CN113112920B (en) * | 2021-04-09 | 2022-11-15 | 昆山国显光电有限公司 | Display device and control method thereof |
| CN113362718B (en) * | 2021-06-21 | 2022-07-12 | 武汉华星光电技术有限公司 | Flexible supporting member, display module and mobile terminal |
| CN113530960B (en) * | 2021-06-29 | 2022-06-17 | 上海天马微电子有限公司 | Hinge and flexible display device |
| CN113539115A (en) * | 2021-07-30 | 2021-10-22 | 深圳市华星光电半导体显示技术有限公司 | Display device and electronic apparatus |
| CN113674625B (en) * | 2021-08-19 | 2023-05-16 | 京东方科技集团股份有限公司 | Support piece, flexible display module and display device |
| CN113990187B (en) * | 2021-10-27 | 2024-03-19 | 京东方科技集团股份有限公司 | Display assembly, display control method thereof and vehicle-mounted display device |
| CN115035798B (en) * | 2022-06-23 | 2023-09-22 | 合肥维信诺科技有限公司 | Bending jig and flexible display device |
| CN115240561A (en) * | 2022-08-25 | 2022-10-25 | 昆山国显光电有限公司 | Display panel, display panel control method and display device |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007136792A2 (en) * | 2006-05-18 | 2007-11-29 | Mccarthy Peter T | Snorkels, flexible tubes, mouthpieces and methods |
| CN106297568A (en) * | 2016-10-31 | 2017-01-04 | 昆山国显光电有限公司 | Flexible display apparatus |
| CN106486018A (en) * | 2015-08-31 | 2017-03-08 | 乐金显示有限公司 | Foldable display device |
| CN107195253A (en) * | 2017-07-26 | 2017-09-22 | 武汉天马微电子有限公司 | Foldable flexible display device |
| CN107437378A (en) * | 2017-09-20 | 2017-12-05 | 上海天马微电子有限公司 | Flexible display module |
| KR20180030422A (en) * | 2016-09-15 | 2018-03-23 | 노완동 | 2 Step folderabl Display Device |
| CN108399861A (en) * | 2018-03-07 | 2018-08-14 | 昆山国显光电有限公司 | Flexible display device support component and flexible display device |
| CN208806017U (en) * | 2018-05-25 | 2019-04-30 | 深圳市柔宇科技有限公司 | Bendable pack terminal and its bent support component |
| CN110265438A (en) * | 2019-06-06 | 2019-09-20 | 武汉华星光电半导体显示技术有限公司 | Flexible display panels and display device |
| CN110349506A (en) * | 2018-04-03 | 2019-10-18 | 三星显示有限公司 | Display equipment and the method for manufacturing it |
| CN110675747A (en) * | 2019-09-16 | 2020-01-10 | 武汉华星光电半导体显示技术有限公司 | Foldable display device |
-
2020
- 2020-02-28 CN CN202010130092.0A patent/CN111192525B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007136792A2 (en) * | 2006-05-18 | 2007-11-29 | Mccarthy Peter T | Snorkels, flexible tubes, mouthpieces and methods |
| CN106486018A (en) * | 2015-08-31 | 2017-03-08 | 乐金显示有限公司 | Foldable display device |
| KR20180030422A (en) * | 2016-09-15 | 2018-03-23 | 노완동 | 2 Step folderabl Display Device |
| CN106297568A (en) * | 2016-10-31 | 2017-01-04 | 昆山国显光电有限公司 | Flexible display apparatus |
| CN107195253A (en) * | 2017-07-26 | 2017-09-22 | 武汉天马微电子有限公司 | Foldable flexible display device |
| CN107437378A (en) * | 2017-09-20 | 2017-12-05 | 上海天马微电子有限公司 | Flexible display module |
| CN108399861A (en) * | 2018-03-07 | 2018-08-14 | 昆山国显光电有限公司 | Flexible display device support component and flexible display device |
| CN110349506A (en) * | 2018-04-03 | 2019-10-18 | 三星显示有限公司 | Display equipment and the method for manufacturing it |
| CN208806017U (en) * | 2018-05-25 | 2019-04-30 | 深圳市柔宇科技有限公司 | Bendable pack terminal and its bent support component |
| CN110265438A (en) * | 2019-06-06 | 2019-09-20 | 武汉华星光电半导体显示技术有限公司 | Flexible display panels and display device |
| CN110675747A (en) * | 2019-09-16 | 2020-01-10 | 武汉华星光电半导体显示技术有限公司 | Foldable display device |
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|---|---|
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