CN113160704B - Display device and bending method thereof - Google Patents
Display device and bending method thereof Download PDFInfo
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- CN113160704B CN113160704B CN202110278392.8A CN202110278392A CN113160704B CN 113160704 B CN113160704 B CN 113160704B CN 202110278392 A CN202110278392 A CN 202110278392A CN 113160704 B CN113160704 B CN 113160704B
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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
Abstract
The invention provides a display device and a bending method thereof, and relates to the technical field of display. The display device comprises a display panel, a rotating shaft and a driving mechanism; the rotating shaft is positioned on the backlight side of the display panel and is in sliding connection with the display panel, and the driving mechanism is connected with the rotating shaft; the display panel is configured to bend with the rotating shaft as an axis; the driving mechanism is configured to drive the rotating shaft to move at least along a first direction in the process of bending the display panel. The invention is suitable for manufacturing the display device.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display device and a bending method thereof.
Background
With the rapid development of display technology, folding display products has attracted a great deal of attention. The folding position of the existing folding display product is fixed, and when the folding display product is used by a user, the folding display product can only be folded at the fixed folding position. Along with the increase of folding times, the corresponding area of folding position is very easy to be damaged, has shortened the life of folding demonstration product to a great extent.
Currently, there is a need to provide a new display device to solve the above-mentioned problems.
Disclosure of Invention
The embodiment of the invention provides a display device and a bending method thereof, wherein the position of a folding shaft of the display device can be moved, so that the display panel is prevented from being folded at the same position, the damage probability of the folding position is reduced, and the service life is prolonged.
In order to achieve the above purpose, the embodiment of the present invention adopts the following technical scheme:
in one aspect, there is provided a display device including: a display panel, a rotating shaft and a driving mechanism; the rotating shaft is positioned on the backlight side of the display panel and is in sliding connection with the display panel, and the driving mechanism is connected with the rotating shaft.
The display panel is configured to be bent with the rotation shaft as an axis.
The driving mechanism is configured to drive the rotating shaft to move at least along a first direction in the process of bending the display panel.
Optionally, the driving mechanism is further configured to drive the rotating shaft to move along a second direction in the process of bending the display panel, and the first direction is opposite to the second direction.
Optionally, the display device further includes a frame, and the frame is disposed around a side edge of the display panel; the driving mechanism is located between the frame body and the display panel.
The driving mechanism comprises a driving piece and a transmission piece which are connected, the driving piece is fixed with the frame body, and the transmission piece is connected with the rotating shaft.
Optionally, the driving piece is including setting up first sub-driving piece and the second sub-driving piece of pivot both sides, the driving piece includes slider, first sub-driving piece and second sub-driving piece, first sub-driving piece with the second sub-driving piece is located respectively the pivot both sides.
The first sub-driving piece is connected with the first sub-transmission piece, and the second sub-driving piece is connected with the second sub-transmission piece; the first sub-driving piece and the second sub-driving piece are respectively fixed with the frame body, the first sub-driving piece and the second sub-driving piece are respectively connected with the sliding piece, and the sliding piece is sleeved on the rotating shaft.
The first sub-transmission piece is configured to be driven by the first sub-driving piece to transmit, and the sliding piece is configured to drive the rotating shaft to move along the first direction under the transmission of the first sub-transmission piece.
The second sub-transmission part is configured to be driven by the second sub-driving part to transmit, and the sliding part is further configured to drive the rotating shaft to move along the second direction under the transmission of the second sub-transmission part.
Optionally, the first sub-driving member and the second sub-driving member have the same structure, and the first sub-driving member and the second sub-driving member have the same structure.
Optionally, the first sub-driving part comprises a driving motor, the sliding part comprises a sliding gear, and the first sub-driving part comprises a push rod; the driving motor is connected with the push rod, the push rod is connected with the sliding gear, and the sliding gear is sleeved on the rotating shaft;
the push rod is configured to be driven by the driving motor to drive the sliding gear, and the sliding gear drives the rotating shaft to move along the first direction.
Optionally, the driving piece includes control motor, the driving piece includes linear drive structure, control motor with linear drive structure connects, linear drive structure with the pivot is connected.
The linear transmission structure is configured to be driven by the control motor in the first direction or in the second direction.
Optionally, the control motor comprises a drive controller and a stepping motor which are electrically connected; the linear transmission structure comprises a transmission gear and a rack which are meshed with each other, the transmission gear is connected with the stepping motor, and the rack is vertically connected with the rotating shaft.
The drive controller is configured to input a first control signal or a second control signal to the stepper motor.
The stepping motor is configured to drive the transmission gear to rotate under the control of the first control signal; the transmission gear is configured to be driven by the stepping motor to drive the rack to move along the first direction; the rack is configured to move the rotating shaft in the first direction.
The stepping motor is configured to drive the transmission gear to rotate under the control of the second control signal; the transmission gear is configured to be driven by the stepping motor to drive the rack to move along the second direction; the rack is configured to drive the rotating shaft to move along the second direction.
Optionally, the display device further comprises a stress sensor and a counter; the stress sensor is configured to detect stress of a folding region of the display panel; the counter is configured to detect the number of times the display panel is bent.
In another aspect, there is provided a bending method of a display device, the method including:
the display panel is bent from a flattened state to a folded state by taking the rotating shaft as an axis;
in the process of bending the display panel, the driving mechanism drives the rotating shaft to move along the first direction; the display device comprises a display panel, a rotating shaft and a driving mechanism; the rotating shaft is positioned on the backlight side of the display panel and is in sliding connection with the display panel, and the driving mechanism is connected with the rotating shaft.
The embodiment of the invention provides a display device and a bending method thereof. The display device comprises a display panel, a rotating shaft and a driving mechanism; the rotating shaft is positioned on the backlight side of the display panel and is in sliding connection with the display panel, and the driving mechanism is connected with the rotating shaft; the display panel is configured to bend with the rotating shaft as an axis; the driving mechanism is configured to drive the rotating shaft to move at least along a first direction in the process of bending the display panel. Because the driving mechanism drives the rotating shaft to move at least along the first direction in the process of bending the display panel, the display panel can be bent by taking the rotating shaft as a folding shaft; therefore, the position of the folding shaft is not fixed, the display panel is prevented from being folded at the same position all the time, the damage probability of the display panel is further reduced, and the service life is prolonged.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a first display device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a second display device according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a third display device according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a fourth display device according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a bending and unfolding process of a display device according to an embodiment of the present invention; in fig. 5, the (a), the (B) and the (C) diagrams are schematic structural diagrams of three states of the display device in the bending process;
FIG. 6 is a schematic diagram illustrating a bending and unfolding process of another display device according to an embodiment of the present invention; in fig. 6, the (a), the (B) and the (C) diagrams are schematic structural diagrams of three states of the display device in the bending process respectively;
fig. 7 (a), (b), and (c) are schematic diagrams of three structures of a stepper motor in the rotation process according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the embodiments of the present invention, unless otherwise indicated, the terms "upper" and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience of description and to simplify the description, and do not indicate or imply that the structures or elements to be referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the invention.
In embodiments of the present invention, unless explicitly specified and limited otherwise, the term "coupled" is to be construed broadly, and may be, for example, fixedly coupled, movably coupled, detachably coupled, or integrally coupled; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to the specific circumstances.
In order to clearly describe the technical solution of the embodiments of the present invention, in the embodiments of the present invention, the terms "first", "second", etc. are used to distinguish the same item or similar items having substantially the same function and effect, and those skilled in the art will understand that the terms "first", "second", etc. do not limit the number.
With the advent of OLED (Organic Light Emitting Diode ) display panels, flexible display products have grown in layers, and foldable display products have received much attention. The foldable display product is subjected to tensile or compressive stresses in the fold region during folding, resulting in a shortened life of the fold region. For example, the OLED foldable display product with the hinge structure has the advantages that after being folded for a plurality of times, on one hand, the service life of the hinge structure of the folding area is greatly shortened; on the other hand, the OLED flexible display panel is stressed, so that display problems such as bright and dark lines and the like can occur, even products are damaged, and the service life of the products is shortened to a great extent.
An embodiment of the present invention provides a display device, as shown with reference to fig. 1, including: a display panel 1, a rotating shaft 2 and a driving mechanism 3; the rotating shaft 2 is located on the backlight side of the display panel 1 and is in sliding connection with the display panel 1, and the driving mechanism 3 is connected with the rotating shaft 2. The display panel is configured to bend around the rotation axis. The driving mechanism is configured to drive the rotating shaft to move at least along the first direction BA during bending of the display panel. It should be noted that, the display devices shown in fig. 1 and fig. 2 are both in a bent state. In addition, the axis of the rotating shaft is parallel to the dotted line in fig. 1 and 2, which is merely for convenience of description of the position of the rotating shaft, and is not present in the actual structure. The straight lines on both sides of the broken line in fig. 1 and 2 are only for illustrating the moving range of the rotating shaft, and the moving range of the rotating shaft is very slight in practical applications.
The rotating shaft can be in sliding connection with the display panel through a sliding mechanism, and the sliding mechanism can be fixed on a backlight surface of the display panel or on the side surface of the display panel, and can be specifically determined according to practical situations.
The first direction may be the same as the opening direction of the cross section of the folded display panel in the direction perpendicular to the rotation axis as shown in fig. 5 (B); alternatively, the first direction may be opposite to the opening direction of the folded display panel along the section perpendicular to the rotation axis direction.
The specific structure of the driving mechanism is not limited here. By way of example, the drive mechanism may include a drive member and a transmission member. The driving member may comprise a motor and the driving member may comprise one or a combination of linear drive structure, gears, racks, and drive rods.
The display panel may be a flexible display panel. The specific type of the flexible display panel is not limited herein. By way of example, the flexible display panel may be any one of an OLED (Organic Light Emitting Diode ) display panel, a Micro OLED display panel, a Mini LED display panel.
In practical application, in order to prevent the rotation shaft from shifting in the moving process, a driving mechanism may be respectively disposed at two ends of the rotation shaft, so as to drive the rotation shaft to move at least along the first direction. Or, a driving mechanism is arranged on the backlight side of the display panel, and the connection point of the driving mechanism and the rotating shaft is arranged at the middle position of the rotating shaft, so that the rotating shaft is ensured not to deviate in the moving process. The specific setting mode can be determined according to actual conditions.
It should be noted that, the structures shown in fig. 1 to 7 provided in the embodiments of the present invention are all simplified structures, and only a driving mechanism is provided at one end of the rotating shaft for illustration.
Embodiments of the present invention provide a display device including a display panel, a rotation shaft, and a driving mechanism; the rotating shaft is positioned on the backlight side of the display panel and is in sliding connection with the display panel, and the driving mechanism is connected with the rotating shaft; the display panel is configured to bend with the rotation shaft as an axis; the driving mechanism is configured to drive the rotating shaft to move at least along a first direction in the process of bending the display panel. Because the driving mechanism drives the rotating shaft to move at least along the first direction in the process of bending the display panel, the display panel can be bent by taking the rotating shaft as a folding shaft; therefore, the position of the folding shaft is not fixed, the display panel is prevented from being folded at the same position all the time, the damage probability of the display panel is further reduced, and the service life is prolonged.
Optionally, the driving mechanism is further configured to drive the rotating shaft to move along a second direction AB during the bending process of the display panel, and the first direction BA is opposite to the second direction AB.
The driving mechanism may include a driving member and a transmission member. The driving direction of the driving piece can be controlled, so that the transmission direction of the transmission piece is controlled, and the moving direction of the rotating shaft is further controlled. The specific control manner of the driving member is not limited herein, and may be determined according to actual situations.
Optionally, referring to fig. 1, the display device further includes a frame (not shown in fig. 1) disposed around a side of the display panel 1; the driving mechanism 3 is located between the frame and the display panel. The driving mechanism 3 comprises a driving piece 31 and a transmission piece 32 which are connected, the driving piece 31 is fixed with the frame body, and the transmission piece 32 is connected with the rotating shaft 2.
The transmission piece is configured to be driven by the driving piece to transmit; the shaft is configured to move in a first direction under the drive of the drive member or in a second direction under the drive of the drive member. The driving direction of the driving piece can be controlled, so that the transmission direction of the transmission piece is controlled, and the moving direction of the rotating shaft is further controlled. The specific control manner of the driving member is not limited herein, and may be determined according to actual situations.
It should be noted that, in practical application, the movement displacement of the rotating shaft may be within a preset range, and the preset range may be determined according to practical situations. The display device further comprises a back frame, the back frame covers the backlight surface of the display panel and is fixed with the frame body, and the rotating shaft is positioned between the display panel and the back frame.
According to the display device provided by the embodiment of the invention, as the driving mechanism drives the rotating shaft to move along the first direction or move along the second direction in the bending process of the display panel, the display panel can be bent by taking the rotating shaft as the folding shaft, so that the position of the folding shaft is not fixed, the display panel is prevented from being folded at the same position all the time, the damage probability of the display panel is further reduced, and the service life is prolonged.
The above-described driving mechanism may include two types, and the first driving mechanism has the following structure:
alternatively, the driving mechanism includes a driving member and a transmission member connected to each other, and referring to fig. 2, the driving member includes a first sub driving member 311 and a second sub driving member 312 disposed at both sides of the rotation shaft 2, the transmission member includes a sliding member (not shown in fig. 2), a first sub transmission member 321 and a second sub transmission member 322, and the first sub transmission member 321 and the second sub transmission member 322 are disposed at both sides of the rotation shaft 2, respectively. The first sub driving piece 311 is connected with the first sub transmission piece 321, and the second sub driving piece 312 is connected with the second sub transmission piece 322; the first sub driving member 311 and the second sub driving member 312 are respectively fixed to a frame (not shown in fig. 2), and the first sub driving member 321 and the second sub driving member 322 are respectively connected to a sliding member, which is sleeved on the rotating shaft 2.
The connection between the first sub-transmission part and the sliding part specifically means that: the part structure of the first sub-transmission part is not fixed with the sliding part, and the first sub-transmission part and the sliding part can have relative movement within a preset range, namely the first sub-transmission part is movably connected with the sliding part. The connection between the second sub-transmission member and the sliding member is similar to that of the first sub-transmission member, and will not be described again.
The specific structure of the sliding member is not limited herein. The sliding member may be a sliding gear, or may also be a roller, which may be specifically determined according to practical situations.
There is no limitation as to whether the structures of the first sub-driving member and the second sub-driving member are identical. For example, the structures of the first sub-driving member and the second sub-driving member may be the same, or the structures of the first sub-driving member and the second sub-driving member may be different, which may be specifically determined according to practical situations.
There is no limitation as to whether the structures of the first and second sub-transmission members are identical. For example, the structures of the first sub-transmission member and the second sub-transmission member may be the same, or the structures of the first sub-transmission member and the second sub-transmission member may be different, which may be specifically determined according to practical situations.
The sliding part is configured to drive the rotating shaft to move along a first direction under the drive of the first sub-driving part. The second sub-driving piece is configured to drive the second sub-driving piece, and the sliding piece is configured to drive the rotating shaft to move along the second direction under the drive of the second sub-driving piece.
It should be noted that, referring to fig. 2, in the process that the first sub-driving member 311 drives the first sub-driving member 321 to drive, and the sliding member drives the rotating shaft 2 to move along the first direction BA under the driving of the first sub-driving member 321, the second sub-driving member 312 may drive the second sub-driving member 322 to drive, so that the second sub-driving member 322 moves along the first direction BA, thereby avoiding collision between the second sub-driving member 322 and the sliding member and avoiding damage to the product.
It should be further noted that, in order to avoid that the display panel is always folded at the same position, the rotating shaft provided by the embodiment of the invention can slightly move, and in practical application, the moving displacement of the rotating shaft can be within a preset range, and the preset range can be determined according to the practical folding condition.
Alternatively, referring to fig. 2, the first sub-driving member 311 and the second sub-driving member 312 have the same structure, and the first sub-driving member 321 and the second sub-driving member 322 have the same structure.
Alternatively, referring to fig. 3, the first sub-driver of the display device 100 includes a driving motor 35, the slider includes a sliding gear 33, and the first sub-driver includes a push rod 34; the driving motor 35 is connected with the push rod 34, the push rod 34 is connected with the sliding gear 33, and the sliding gear 33 is sleeved on the rotating shaft 2. The push rod 34 is configured to be driven by the driving motor 35 to drive the sliding gear 33, and the sliding gear 33 drives the rotating shaft 2 to move along the first direction BA. In practical application, the movement displacement of the rotating shaft can be within a preset range, and the preset range can be determined according to practical conditions. In the case where the first sub-transmission member includes a push rod, the movement displacement of the rotation shaft does not exceed the length of the push rod.
It should be noted that, the driving motor 35 and the push rod 34 shown in fig. 3 may be combined together to form an integrated electric push rod, which is convenient for installation. In addition, fig. 3 shows that the second sub-transmission member includes a push rod 36 and a driving motor 37, and since the first sub-transmission member and the second sub-transmission member have the same structure, and the specific structures of the second sub-transmission member and the second sub-transmission member are not described again.
In practical applications, the push rod may be made of a material having a certain strength and flexibility, and the extent to which the push rod is actually bent is very slight due to the small extent to which the push rod is moved in the first direction or the second direction.
The specific structure of the second driving mechanism is as follows:
alternatively, the driving mechanism comprises a driving member and a transmission member connected to each other, and referring to fig. 4, the driving member comprises a control motor 38, the transmission member comprises a linear transmission structure 41, the control motor 38 is connected to the linear transmission structure 41, and the linear transmission structure 41 is connected to the rotating shaft 2. The linear transmission structure 41 is configured to be driven in the first direction BA or in the second direction AB by the control motor 38.
The specific structure of the linear transmission structure is not limited herein. For example, the linear transmission structure may include a connecting rod, and the connecting rod is directly driven to perform linear motion by a control motor; or, the linear transmission structure can comprise a transmission gear and a rack, and the rack is driven to do linear motion through the transmission gear. Specifically, the method can be determined according to actual conditions.
The specific type of the control motor is not limited here. The control motor may be a stepping motor, or may be a servo motor. The rotation direction of the stepping motor and the servo motor can be controlled by a driver.
The stepper motor is a switch control element that converts an electrical pulse signal into an angular displacement or a linear displacement. Each time a pulse signal is input, the rotor rotates by an angle or further, the output angular displacement or linear displacement is in direct proportion to the output pulse number, and the rotating speed is in direct proportion to the pulse frequency.
Alternatively, referring to FIG. 4, the control motor 38 includes a drive controller and a stepper motor that are electrically connected; the linear transmission structure 41 comprises a transmission gear 39 and a rack 40 which are meshed with each other, the transmission gear 39 is connected with a stepping motor, and the rack 40 is vertically connected with the rotating shaft 2.
Wherein the drive controller is configured to input the first control signal or the second control signal to the stepper motor; the stepping motor is configured to drive the transmission gear to rotate under the control of the first control signal; the transmission gear is configured to be driven by the stepping motor to drive the rack to move along a first direction; the rack is configured to drive the rotating shaft to move along a first direction; the stepping motor is configured to drive the transmission gear to rotate under the control of the second control signal; the transmission gear is configured to be driven by the stepping motor to drive the rack to move along the second direction; the rack is configured to drive the rotating shaft to move along the second direction.
In practical application, the movement displacement of the rotating shaft can be within a preset range, and the preset range can be determined according to the practical folding condition. In the case of a linear drive arrangement comprising intermeshing drive gears and racks, the displacement of the shaft does not exceed the length of the racks.
In practical applications, the rack may be made of a material having a certain strength and flexibility, and the extent to which the rack is actually bent is very slight due to the small extent to which the shaft moves in the first direction or the second direction.
The type of the stepping motor is not limited here. For example, the motor may be a reactive stepping motor, or may also be a permanent magnet stepping motor, which may be specifically determined according to practical situations.
Note that, referring to fig. 7, the structures of the reference numerals A, B, C, A, B, and C in the stepper motor shown in fig. 7 are all stators, and the structures of the reference numerals a, B, C, d located at the center in the drawing are all rotors.
The first control signal is input to the stepper motor through the driving controller, and the first control signal can control the stator in the stepper motor to be respectively electrified according to the sequence of the electrification of the stator A and the stator A, the electrification of the stator B and the stator B, and the electrification of the stator C and the stator C, so that the rotor a, B, C, d rotates by a preset angle anticlockwise according to the process shown in the diagrams (a), (B) and (C) in fig. 7.
The second control signal is input to the stepping motor through the driving controller, and the second control signal can control the stator in the stepping motor to be respectively electrified according to the sequence of electrifying stator C and stator C, electrifying stator B and stator B, electrifying stator A and stator A, so that the rotor a, B, C, d rotates by a preset angle in a clockwise direction. Optionally, the display device further comprises a stress sensor and a counter; the stress sensor is configured to detect stress of a folding area of the display panel; the counter is configured to detect the number of bending times of the display panel.
In practical application, the stress sensor can be arranged in a folding area of the display panel, and in order not to influence normal use of the display device, the stress sensor and the display panel can be detachably connected so as to improve use flexibility. The counter may be disposed on a side surface or a backlight surface of the display panel.
In order to facilitate the user to monitor the stress and the bending times of the folding area of the display panel in time, the stress sensor and the counter can be respectively connected with the display panel in a communication manner so as to display the stress test result and the bending times in the display panel.
The embodiment of the invention also provides a bending method of the display device, which comprises the following steps:
s01, bending the display panel from a flattened state to a folded state by taking the rotating shaft as an axis;
s02, in the process of bending the display panel, the driving mechanism drives the rotating shaft to move along the first direction; the display device comprises a display panel, a rotating shaft and a driving mechanism; the rotating shaft is positioned on the backlight side of the display panel and is in sliding connection with the display panel, and the driving mechanism is connected with the rotating shaft.
Wherein, in the process that the display panel is bent from the flattened state shown in the (A) diagram in FIG. 5 to the folded state shown in the (B) diagram in FIG. 5 along the OC direction by taking the rotating shaft as the shaft, the driving mechanism drives the rotating shaft to move along the first direction BA direction; wherein the first direction BA direction is the same as the opening direction of the cross section of the folded display panel along the direction perpendicular to the rotation axis as shown in the (B) diagram of fig. 5.
In practical application, the display panel can also bend from a flattened state shown in (a) of fig. 6 to a folded state shown in (B) of fig. 6 along an OD direction by taking the rotating shaft as an axis, and in the bending process, the driving mechanism drives the rotating shaft to move along a second direction AB direction; the second direction AB is the same as the opening direction of the cross section of the folded display panel along the direction perpendicular to the rotation axis as shown in fig. 6 (B).
The display device in the flattened state shown in fig. 5 (a) and the display device in the flattened state shown in fig. 6 (a) are identical in structure, and the structures shown in fig. 5 (a) and 6 (a) are simplified structures.
The above-mentioned flattened state refers to a state when the light-emitting surfaces of the display panel or the display device face the same direction, and in the flattened state shown in fig. 5 (a) and fig. 6 (a), the rotation shaft is located at the middle position of the display panel, that is, at the position 1 shown in fig. 5 (a) or fig. 6 (a).
The display panel may be bent in other ways besides the bending method. For example, the bending may be performed in two halves, but of course, other manners are also possible, and the present invention is not limited thereto.
In the process of bending the display panel in the OC direction from the flattened state shown in fig. 5 (a) to the folded state shown in fig. 5 (B) with the rotation shaft as the axis, the rotation shaft moves from the position 1 to the position 2; after the display panel is unfolded in the OE direction from the folded state shown in fig. 5 (B) to the state shown in fig. 5 (C), the rotation shaft is still located at position 2.
The display panel shown in fig. 4 may be folded as described above. Of course, in the process of bending the display panel, when the display panel is bent in the OC direction from the flattened state shown in fig. 5 (a) with the rotation shaft as the axis, the driving mechanism may also drive the rotation shaft to move in the AB direction in the second direction; when the display panel is bent in the OD direction from the flattened state shown in fig. 6 (a) with the rotation shaft as the axis, the driving mechanism may further drive the rotation shaft to move in the first direction BA direction.
According to the bending method provided by the embodiment of the invention, as the driving mechanism drives the rotating shaft to move along the first direction or the second direction in the bending process of the display panel, the display panel can be bent by taking the rotating shaft as a folding shaft; therefore, the position of the folding shaft is not fixed, the display panel is prevented from being folded at the same position all the time, the damage probability of the display panel is further reduced, and the service life is prolonged.
The following describes, as an example, a structure in which the first sub-driving member of the display device 100 shown in fig. 3 includes a driving motor 35, the sliding member includes a sliding gear 33, and the first sub-driving member includes a push rod 34, a bending process of the structure:
s1, when the display panel is bent from the flattened state shown in fig. 5 (a) to the folded state shown in fig. 5 (B) along the OC direction with the rotation shaft as the axis, the sliding gear 33 drives the rotation shaft 2 to move along the first direction BA.
In this process, the push rod 34 is driven by the driving motor 35 to drive the sliding gear 33, and the sliding gear 33 drives the rotating shaft 2 to move along the first direction BA, and the rotating shaft moves from the position 1 to the position 2.
S2, the display panel is unfolded from a folded state shown in the diagram of fig. 5 (B) to an unfolded state shown in the diagram of fig. 5 (C), and the rotating shaft is located at the position after the movement in the step S1.
In this process, the rotating shaft 2 is still located at the position 2, the sliding gear 33 rotates, and the contact position with the push rod 34 changes with respect to the step S1.
And S3, continuing to fold according to the bending modes of S1-S2, and continuing to move the rotating shaft 2 along the direction of the first direction BA.
The process OF folding the display panel in the bending manner shown in fig. 6 is similar to the above process, and the rotation shaft moves from position 1 to position 3 in the process OF folding the display panel in the OD direction to the bending state shown in fig. 6 (B) and then unfolding the display panel in the OF direction to the flattening state shown in fig. 6 (C). The specific bending method is not described here. In practical application, the user can fold back the display panel according to the actual requirement, so that the rotating shaft moves reciprocally.
The following takes the driving member of the display device 100 shown in fig. 4 as an example, the driving member includes a stepper motor 35, and the driving member includes a linear driving structure 41, to specifically describe how to control the stepper motor to implement the reciprocating motion of the rack 40, so as to drive the rotating shaft 2 to move along the first direction or the second direction.
It should be noted that, referring to fig. 7, the structures of the marks A, B, C, A, B, and C in the stepper motor shown in fig. 7 are all stators, and the structures of the marks a, B, C, d located at the center position in the figure are all rotors, wherein the stator a and the stator a are oppositely disposed, the stator B and the stator B are oppositely disposed, and the stator C are respectively disposed; the rotor a and the rotor c are arranged oppositely, and the rotor b and the rotor d are arranged oppositely. The stator is wound with wires not shown in fig. 7.
The method for controlling the stepping motor by the driving controller is as follows:
s11, referring to fig. 7 (a), the stator a and the stator a of the stepping motor are controlled to be energized by the drive controller.
At this time, a magnetic field is formed between the stator a and the stator a, and if there is a certain angle between the axis directions of the rotor and the magnetic field, the stator is magnetized under the action of the magnetic field, and the rotor is attracted to rotate, so that the rotor a and the rotor c rotate to a position consistent with the axis directions of the stator a and the stator a, and thus, the axis directions of the rotor a and the rotor c are parallel to the axis directions of the stator a and the stator a.
S12, referring to fig. 7 (B), the driving controller controls energization to the stator B and the stator B of the stepping motor.
At this time, a magnetic field is formed between the stator B and the stator B, so that the rotor B and the rotor d are rotated to a position in line with the axes of the stator B and the stator B, and thus the axes of the rotor B and the rotor d are parallel to the axes of the stator B and the stator B.
S13, referring to fig. 7 (C), the driving controller controls energization to the stator C of the stepping motor and the stator C.
At this time, a magnetic field is formed between the stator C and the stator C, so that the rotor a and the rotor C are rotated to a position in line with the axes of the stator C and the stator C, and thus the axes of the rotor a and the rotor C are parallel to the axes of the stator C and the stator C.
S14, controlling the stepping motor to circularly electrify according to the order of electrifying stator A and stator A, electrifying stator B and electrifying stator C and stator C through the driving controller; so that the rotor continues to rotate.
Through the steps of S11-S13 described above, the rotor is rotated counterclockwise by a preset angle, which may be set as needed, for example, 30 ° according to the process shown in fig. 7 (a), (b), and (c).
It should be noted that, a first control signal is input to the stepper motor through the driving controller, and the first control signal may control the stator in the stepper motor to be respectively electrified according to the sequence of the stator a and the stator a, the stator B and the stator B, and the stator C, so that the rotor a, B, C, d rotates by a preset angle in the anticlockwise direction according to the process shown in the diagrams (a), (B) and (C) in fig. 7.
The second control signal is input to the stepping motor through the driving controller, and the second control signal can control the stator in the stepping motor to be respectively electrified according to the sequence of electrifying stator C and stator C, electrifying stator B and stator B, electrifying stator A and stator A, so that the rotor a, B, C, d rotates by a preset angle in a clockwise direction.
In addition, by controlling the frequency of the first control signal or the second control signal input to the stepper motor by the driving controller, the rotation rate of the rotor can be controlled, and specific processes can refer to the related technology of the stepper motor, and only the content related to the invention is described herein and will not be repeated.
The foregoing is merely illustrative of the present invention, and the present invention is not limited to the above embodiments, and any person skilled in the art can easily think about the changes and substitutions within the technical scope of the present invention, and the changes and substitutions are intended to be covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. A display device is characterized by comprising a display panel, a rotating shaft and a driving mechanism; the rotating shaft is positioned on the backlight side of the display panel and is in sliding connection with the display panel, and the driving mechanism is connected with the rotating shaft;
the display panel is configured to bend with the rotating shaft as an axis;
the driving mechanism is configured to drive the rotating shaft to move at least along a first direction in the process of bending the display panel;
the display device also comprises a frame body, and the driving mechanism comprises a driving piece and a transmission piece which are connected;
the driving piece comprises a first sub-driving piece and a second sub-driving piece which are arranged on two sides of the rotating shaft, the transmission piece comprises a sliding piece, a first sub-transmission piece and a second sub-transmission piece, and the first sub-transmission piece and the second sub-transmission piece are respectively positioned on two sides of the rotating shaft;
the first sub-driving piece is connected with the first sub-transmission piece, and the second sub-driving piece is connected with the second sub-transmission piece; the first sub-driving piece and the second sub-driving piece are respectively fixed with the frame body, the first sub-driving piece and the second sub-driving piece are respectively connected with the sliding piece, and the sliding piece is sleeved on the rotating shaft;
the first sub-transmission piece is configured to be driven by the first sub-driving piece to transmit, and the sliding piece is configured to drive the rotating shaft to move along the first direction under the transmission of the first sub-transmission piece;
the second sub-transmission part is configured to be driven by the second sub-driving part to transmit, and the sliding part is further configured to drive the rotating shaft to move along a second direction under the transmission of the second sub-transmission part, wherein the first direction is opposite to the second direction.
2. The display device of claim 1, wherein the display device comprises a display device,
the driving mechanism is further configured to drive the rotating shaft to move along the second direction in the process of bending the display panel.
3. The display device according to claim 2, wherein the frame is disposed around a side of the display panel; the driving mechanism is positioned between the frame body and the display panel;
the driving piece is fixed with the frame body, and the transmission piece is connected with the rotating shaft.
4. The display device of claim 1, wherein the first sub-driver and the second sub-driver are identical in structure, and the first sub-driver and the second sub-driver are identical in structure.
5. The display device of claim 4, wherein the first sub-driver comprises a driving motor, the slider comprises a sliding gear, and the first sub-driver comprises a push rod; the driving motor is connected with the push rod, the push rod is connected with the sliding gear, and the sliding gear is sleeved on the rotating shaft;
the push rod is configured to be driven by the driving motor to drive the sliding gear, and the sliding gear drives the rotating shaft to move along the first direction.
6. A display device according to claim 3, wherein the driving member comprises a control motor, the driving member comprises a linear driving structure, the control motor is connected with the linear driving structure, and the linear driving structure is connected with the rotating shaft;
the linear transmission structure is configured to be driven by the control motor in the first direction or in the second direction.
7. The display device of claim 6, wherein the control motor comprises a drive controller and a stepper motor electrically connected; the linear transmission structure comprises a transmission gear and a rack which are meshed with each other, the transmission gear is connected with the stepping motor, and the rack is vertically connected with the rotating shaft;
the drive controller is configured to input a first control signal or a second control signal to the stepper motor;
the stepping motor is configured to drive the transmission gear to rotate under the control of the first control signal; the transmission gear is configured to be driven by the stepping motor to drive the rack to move along the first direction; the rack is configured to drive the rotating shaft to move along the first direction;
the stepping motor is configured to drive the transmission gear to rotate under the control of the second control signal; the transmission gear is configured to be driven by the stepping motor to drive the rack to move along the second direction; the rack is configured to drive the rotating shaft to move along the second direction.
8. The display device of any one of claims 1-7, further comprising a stress sensor and a counter; the stress sensor is configured to detect stress of a folding region of the display panel; the counter is configured to detect the number of times the display panel is bent.
9. A method of bending a display device according to any one of claims 1 to 8, the method comprising:
the display panel is bent from a flattened state to a folded state by taking the rotating shaft as an axis;
in the process of bending the display panel, the driving mechanism drives the rotating shaft to move along the first direction; the display device comprises a display panel, a rotating shaft and a driving mechanism; the rotating shaft is positioned on the backlight side of the display panel and is in sliding connection with the display panel, and the driving mechanism is connected with the rotating shaft.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110278392.8A CN113160704B (en) | 2021-03-15 | 2021-03-15 | Display device and bending method thereof |
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| CN202110278392.8A CN113160704B (en) | 2021-03-15 | 2021-03-15 | Display device and bending method thereof |
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| CN113160704B true CN113160704B (en) | 2023-06-02 |
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| KR102288846B1 (en) * | 2015-04-07 | 2021-08-11 | 삼성디스플레이 주식회사 | Foldable display device |
| CN208189115U (en) * | 2018-03-12 | 2018-12-04 | 深圳市柔宇科技有限公司 | Bend component and flexible display apparatus |
| CN108922408B (en) * | 2018-09-19 | 2024-02-27 | 云谷（固安）科技有限公司 | Foldable supporting device and foldable flexible display device |
| CN210518451U (en) * | 2019-12-27 | 2020-05-12 | Oppo广东移动通信有限公司 | Foldable electronic device |
| CN111862813A (en) * | 2020-07-21 | 2020-10-30 | 维沃移动通信有限公司 | Electronic device |
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