CN111489653A - Foldable display device and driving method thereof - Google Patents
Foldable display device and driving method thereof Download PDFInfo
- Publication number
- CN111489653A CN111489653A CN202010465037.7A CN202010465037A CN111489653A CN 111489653 A CN111489653 A CN 111489653A CN 202010465037 A CN202010465037 A CN 202010465037A CN 111489653 A CN111489653 A CN 111489653A
- Authority
- CN
- China
- Prior art keywords
- elastic layer
- display device
- folding
- foldable
- foldable display
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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 embodiment of the invention provides a foldable display device and a driving method thereof, relates to the technical field of display, effectively disperses stress and avoids a flexible display panel from being folded. The foldable display device includes: a first non-folded region, a second non-folded region, and a folded region located between the first non-folded region and the second non-folded region; the supporting structure comprises a foldable supporting structure and a rigid supporting structure, the foldable supporting structure is provided with an accommodating space in a folding area, the rigid supporting structure is arranged in the accommodating space, and one side of the rigid supporting structure facing to the light emitting direction is provided with a plurality of grooves; the first elastic layer is arranged on one side of the supporting structure facing the light emergent direction; the second elastic layer is arranged on one side of the first elastic layer facing the light emergent direction and is provided with a cavity in the folding area; the rolling shafts are arranged in the cavities; and the flexible display panel is arranged on one side of the second elastic layer facing the light emergent direction.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of display, in particular to a foldable display device and a driving method thereof.
[ background of the invention ]
In order to meet the requirement of a user on large-screen display and improve the carrying convenience of a large-screen display device, foldable display devices are increasingly widely applied.
Generally, the foldable display device includes a flexible display panel and a support structure for driving the flexible display panel to bend, but when the flexible display panel is driven to bend by the existing support structure, the problems of stress concentration, dead folding of the flexible display panel and the like easily occur, so that the service life of the flexible display panel is affected.
[ summary of the invention ]
In view of this, embodiments of the present invention provide a foldable display device and a driving method thereof, which not only effectively disperse stress applied to a flexible display panel, but also avoid dead folding of the flexible display panel when the foldable display device is folded.
In one aspect, an embodiment of the present invention provides a foldable display device, including:
a first non-folded region, a second non-folded region, and a folded region located between the first non-folded region and the second non-folded region;
the supporting structure comprises a foldable supporting structure and a rigid supporting structure, wherein the foldable supporting structure is provided with an accommodating space in the folding area, the rigid supporting structure is arranged in the accommodating space, and one side of the rigid supporting structure facing to the light emitting direction is provided with a plurality of grooves;
the first elastic layer is arranged on one side, facing the light emergent direction, of the support structure;
the second elastic layer is arranged on one side, facing the light emergent direction, of the first elastic layer, and a cavity is formed in the folding area of the second elastic layer;
a plurality of rollers disposed within the cavity;
the flexible display panel is arranged on one side, facing the light emergent direction, of the second elastic layer.
In another aspect, an embodiment of the present invention provides a driving method of a foldable display device, including:
when the foldable display device is switched from an unfolding mode to a folding mode, the foldable support structure of the support structure is driven to bend, the foldable support structure drives the first elastic layer, the second elastic layer and the flexible display panel to bend, and a part of the first elastic layer is extruded in the groove of the rigid support structure by the rolling shaft under the action of extrusion force;
when the foldable display device is switched from the folding mode to the unfolding mode, the foldable support structure is driven to unfold, and the foldable support structure drives the first elastic layer, the second elastic layer and the flexible display panel to unfold, so that the first elastic layer extruded in the groove rebounds.
One of the above technical solutions has the following beneficial effects:
by adopting the technical scheme provided by the embodiment of the invention, when the foldable display device is folded, under the action of the bending force, the plurality of rollers can form a plurality of stress applying points on the first elastic layer, so that the first elastic layer is pressed into the plurality of grooves of the rigid support structure under the action of the multipoint stress, the buffering effect can be achieved, the stress generated by bending can be dispersed, the stress dispersed to each point is uniform and the strength is smaller, the stress concentration in a certain area is avoided, and the influence of the stress concentration on the service life of the flexible display panel is effectively improved. Moreover, after the foldable display device is folded, the rigid support structure can occupy a certain space in the folding area, and the foldable support structure, the first elastic layer and the second elastic layer can also occupy a certain space between two parts of the flexible display panel, which are positioned in the first non-folding area and the second non-folding area, so that the two parts of the flexible display panel can not be in direct contact with each other, and the flexible display panel is effectively prevented from being folded and folded.
Therefore, by adopting the technical scheme provided by the embodiment of the invention, when the foldable display device is folded, the stress generated by bending is effectively dispersed, the stress concentration is avoided, and the flexible display panel is prevented from being folded, so that the service life of the flexible display panel is effectively prolonged.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a foldable display device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a foldable display device provided in an embodiment of the present invention in a folded mode;
FIG. 3 is a schematic structural diagram of a foldable display device in an unfolded mode according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a first elastic layer according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a groove in a rigid support structure according to an embodiment of the present invention;
FIG. 6 is a schematic view of another embodiment of a groove in a rigid support structure according to the present invention;
FIG. 7 is a schematic view of another embodiment of a groove in a rigid support structure according to the present invention;
FIG. 8 is a schematic structural diagram of a hinge according to an embodiment of the present invention;
FIG. 9 is a schematic structural diagram of a base plate of a foldable display device in an unfolded mode according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of a base plate of a foldable display device in a folding mode according to an embodiment of the present invention;
fig. 11 is a schematic structural diagram of a first magnet and a second magnet according to an embodiment of the present invention;
fig. 12 is a schematic view of another structure of the first magnet and the second magnet according to the embodiment of the present invention;
fig. 13 is a flowchart of a driving method according to an embodiment of the invention.
[ detailed description ] embodiments
For better understanding of the technical solutions of the present invention, the following detailed descriptions of the embodiments of the present invention are provided with reference to the accompanying drawings.
It should be understood that the described embodiments are only some embodiments of the invention, and not all embodiments. 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 terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
It should be understood that although the terms first and second may be used in the embodiments of the present invention to describe the non-folding regions, the elastic layer, the grooves, the support plate, etc., should not be limited to these terms, which are only used to distinguish the non-folding regions, the elastic layer, the grooves, the support plate, etc., from each other. For example, the first non-folded region may also be referred to as a second non-folded region, and similarly, the second non-folded region may also be referred to as a first non-folded region without departing from the scope of embodiments of the present invention.
An embodiment of the present invention provides a foldable display device, as shown in fig. 1, fig. 1 is a schematic structural diagram of the foldable display device provided in the embodiment of the present invention, and the foldable display device includes: a first non-folded region 1, a second non-folded region 2 and a folded region 3 located between the first non-folded region 1 and the second non-folded region 2; the supporting structure 4 comprises a foldable supporting structure 5 and a rigid supporting structure 6, wherein the foldable supporting structure 5 is provided with an accommodating space 7 in the folding area 3, the rigid supporting structure 6 is arranged in the accommodating space 7, one side of the rigid supporting structure 6 facing the light emitting direction is provided with a plurality of grooves 8, and the rigid supporting structure 6 is made of an incompressible and undeformable rigid material; the first elastic layer 9, the first elastic layer 9 is arranged on one side of the supporting structure 4 facing the light-emitting direction; the second elastic layer 10, the second elastic layer 10 is arranged on one side of the first elastic layer 9 facing the light-emitting direction, and the second elastic layer 10 is provided with a cavity 11 in the folding area 3; a plurality of rollers 12, the rollers 12 being disposed within the cavities 11, the rollers 12 being formed of a non-compressible, non-deformable rigid material, the plurality of rollers 12 corresponding to the plurality of grooves 8 when the foldable display device is in the unfolded mode; and a flexible display panel 13, wherein the flexible display panel 13 is arranged on one side of the second elastic layer 10 facing the light emergent direction.
When the foldable display device is switched from the unfolding mode to the folding mode, as shown in fig. 2, fig. 2 is a schematic structural diagram of the foldable display device in the folding mode according to the embodiment of the present invention, the foldable support structure 5 is driven to bend, the foldable support structure 5 drives the first elastic layer 9, the second elastic layer 10 and the flexible display panel 13 to bend, so that the roller 12 presses a portion of the first elastic layer 9 into the groove 8 of the rigid support structure 6 under the bending force; when the foldable display device is switched from the folding mode to the unfolding mode, as shown in fig. 3, fig. 3 is a schematic structural diagram of the foldable display device in the unfolding mode according to the embodiment of the present invention, the foldable support structure 5 is driven to unfold, the foldable support structure 5 drives the first elastic layer 9, the second elastic layer 10 and the flexible display panel 13 to unfold, so that the first elastic layer 9 pressed in the groove 8 rebounds, and the first elastic layer 9 returns to the flat state.
By adopting the foldable display device provided by the embodiment of the invention, when the foldable display device is folded, under the action of the bending force, the plurality of rollers 12 can form a plurality of stress applying points on the first elastic layer 9, so that the first elastic layer 9 is pressed into the plurality of grooves 8 of the rigid support structure 6 under the action of the multi-point stress, the buffering effect can be achieved, the stress generated by bending can be dispersed, the stress dispersed to each point is uniform and has smaller strength, the stress concentration in a certain area is avoided, and the influence of the stress concentration on the service life of the flexible display panel 13 is effectively improved. Furthermore, referring to fig. 2, after the foldable display device is folded, the rigid support structure 6 occupies a certain space in the folding area 3, and the foldable support structure 5, the first elastic layer 9 and the second elastic layer 10 also occupy a certain space between two portions of the flexible display panel 13 located in the first non-folding area 1 and the second non-folding area 2, so that the two portions of the flexible display panel 13 cannot be directly contacted, thereby effectively avoiding the dead fold of the flexible display panel 13.
Therefore, with the foldable display device provided by the embodiment of the invention, when the foldable display device is folded, not only is the stress generated by bending effectively dispersed, and stress concentration avoided, but also the flexible display panel 13 is prevented from being folded, so that the service life of the flexible display panel 13 is effectively prolonged.
In addition, it should be further noted that, when the foldable display device is folded, in the folding area 3, according to the magnitude of the bending force applied to different positions, the magnitude of the pressing force applied to the first elastic layer 9 by the rollers 12 at different positions is different, the bending force in a certain area is larger, and the pressing force applied to the first elastic layer 9 by the rollers 12 is also larger, so that the volume of the material filled into the groove 8 in the first elastic layer 9 is larger, the bending force in a certain area is smaller, the pressing force applied to the first elastic layer 9 by the rollers 12 is also smaller, and the volume of the material filled into the groove 8 in the first elastic layer 9 is also smaller. That is to say, the volume of the material filled into the groove 8 in the first elastic layer 9 can be effectively distributed according to the magnitude of the bending force applied to different positions, so as to ensure that the flexible display panel 13 has a good bending shape in the folding region 3.
Optionally, the plurality of rollers 12 are disposed on one side of the first elastic layer 9 facing the light emitting direction in an unfixed manner, that is, there is no other structure to pull or fix the rollers 12, so that when the foldable display device is folded, the rollers 12 are not dragged by other pulling forces, and the rollers 12 can squeeze the first elastic layer 9 according to the actual stress condition of the position, thereby better dispersing the stress.
Alternatively, as shown in fig. 4, fig. 4 is a schematic structural diagram of the first elastic layer provided in the embodiment of the present invention, and the distance Q between two adjacent rollers 12 is equal when the foldable display device is in the unfolding mode. So set up, a plurality of rollers 12 are evenly arranged in cavity 11, have avoided the roller 12 quantity too much or the roller 12 quantity too little in certain region, when folding display device is folding, can make the stress in 3 each regions of folding region all dispersed by roller 12 to further avoid certain regional internal stress to concentrate.
Further, referring to fig. 4 again, a plurality of roller receiving grooves 13 are disposed on one side of the first elastic layer 9 facing the roller 12, the roller receiving grooves 13 are disposed in the folding area 3, a distance between two adjacent roller receiving grooves 13 is equal, and a depth of each roller receiving groove 13 is smaller than a diameter of the roller 12. On one hand, when the foldable display device is in the unfolding mode, the roller accommodating grooves 13 can limit the positions of the rollers 12, so that the equal distance between two adjacent rollers 12 is ensured, and further, the stress of the rollers 12 on each area is effectively dispersed; on the other hand, the depth of the roller receiving groove 13 is smaller than the diameter of the roller 12, so that when the foldable display device is folded, the roller 12 can be moved out of the roller receiving groove 13, and the first elastic layer 9 is pressed according to the actual stress distribution of each area.
Furthermore, it should be noted that the folding area 3 is relatively small compared to the first non-folding area 1 and the second non-folding area 2, so that, when the foldable display device is in the unfolding mode, the flexible display panel 13 can maintain a flat surface under the support of the foldable support structure 5 even if the roller 12 is recessed in the roller receiving groove 13 on the premise that the foldable support structure 5 stably supports the flexible display panel 13 in the first non-folding area 1 and the second non-folding area 2, so that the roller 12 cannot support the flexible display panel 13.
Optionally, the thickness of the second elastic layer 10 in the direction perpendicular to the plane of the flexible display panel 13 is equal to the diameter of the roller 12, so as to ensure that the flexible display panel 13 has a flat surface supported by the second elastic layer 10.
Alternatively, the elastic modulus of the first elastic layer 9 is smaller than that of the second elastic layer 10, that is, the first elastic layer 9 is deformed to a greater extent than the second elastic layer 10 under the same bending force. Because it is required to fill the groove 8 of the rigid support structure 6 with the first elastic layer 9, the first elastic layer 9 is formed by using a material having a small elastic modulus, so that the first elastic layer 9 can have a larger deformation interval, and the deformation amount of the first elastic layer 9 extruded to the groove 8 is within the deformation area interval, so that when the foldable display device is switched from the folding mode to the unfolding mode, the first elastic layer 9 filled in the groove 8 can be completely rebounded, thereby ensuring that the first elastic layer 9 is restored to the flat state.
Optionally, the second elastic layer 10 is bonded to the first elastic layer 9, so that during the folding process of the foldable display device, the relative position between the second elastic layer 10 and the first elastic layer 9 is prevented from being shifted, and the reliability and stability of the second elastic layer 10 and the first elastic layer 9 are improved.
Alternatively, referring to fig. 1, as shown in fig. 5, fig. 5 is a schematic structural diagram of a groove in a rigid support structure provided in an embodiment of the present invention, the groove 8 in the rigid support structure 6 extends along a first direction, the first direction is perpendicular to a bending direction of the flexible display panel 13, the groove 8 includes a first opening 81 close to the first elastic layer 9 and a second opening 82 far from the first elastic layer 9, a width of the first opening 81 is greater than a width of the second opening 82, and specifically, the shape of the groove 8 may be an inverted triangle, an inverted trapezoid, a semicircle, or the like. So set up, recess 8 has great width towards first opening 81 of first elastic layer 9, when roller 12 extrudes first elastic layer 9 under the stress effect, can make first elastic layer 9 be extruded to the recess 8 more easily to better the dispersion of stress.
Alternatively, as shown in fig. 6, fig. 6 is another structural schematic diagram of the grooves in the rigid support structure provided by the embodiment of the invention, the folding region 3 includes a middle folding region 14 and edge folding regions 15 located at both sides of the middle folding region 14, the grooves 8 include a first groove 16 and a second groove 17, the first groove 16 is located in the middle folding region 14, the second groove 17 is located in the edge folding regions 15, and the width L1 of the first groove 16 is greater than the width L2 of the second groove 17.
When the foldable display device is folded, the middle folding area 14 is subjected to a larger bending force than the edge folding area 15, and accordingly, the larger the pressing force of the roller 12 of the middle folding area 14 on the first elastic layer 9 is, the larger the volume of the material filled into the first groove 16 by the first elastic layer 9 is. By increasing the width of the first groove 16 of the intermediate folding zone 14, not only is the first elastic layer 9 more easily squeezed into the first groove 16, but the first groove 16 can also have a larger filling space to accommodate a larger volume of the first elastic layer 9.
Alternatively, as shown in fig. 7, fig. 7 is a schematic view of another structure of the groove in the rigid supporting structure provided by the embodiment of the present invention, the depth of the groove 8 is H, the width of the groove 8 is L,
through making recess 8 have great width and have less degree of depth, on the one hand, recess 8 has the opening of broad, can make first elastic layer 9 extruded to recess 8 more easily when collapsible display device folds in, and on the other hand, avoided recess 8 too dark, when collapsible display device expanded, can guarantee to fill the whole resilience of first elastic layer 9 in recess 8, made first elastic layer 9 resume the flat condition.
Optionally, referring to fig. 1 again, with reference to fig. 8, fig. 8 is a schematic structural diagram of a hinge according to an embodiment of the present invention, in which the foldable support structure 5 includes a bottom plate 18 and a support plate 19, the bottom plate 18 includes a first bottom plate 20 and a second bottom plate 21, the first bottom plate 20 is located in the first non-folding region 1 and the folding region 3, the second bottom plate 21 is located in the second non-folding region 2 and the folding region 3, a hinge mounting region is disposed on a portion of the first bottom plate 20 and a portion of the second bottom plate 21 located in the folding region 3, and portions of the first bottom plate 20 and the second bottom plate 21 located in the folding region 3 are connected by a hinge 22; the supporting plate 19 is arranged on one side of the bottom plate 18 facing the light emitting direction, the supporting plate 19 comprises a first supporting plate 23 and a second supporting plate 24, the first supporting plate 23 is located in the first non-folding area 1, the second supporting plate 24 is located in the second non-folding area 2, and a containing space 7 for containing the rigid supporting structure 6 is formed in the folding area 3 by the first supporting plate 23, the second supporting plate 24, the first bottom plate 20 and the second bottom plate 21.
Furthermore, referring to fig. 2, after the foldable display device is folded, the first bottom plate 20, the second bottom plate 21, the first support plate 23, the second support plate 24, the first elastic layer 9 and the second elastic layer 10 occupy a certain space between two portions of the flexible display panel 13 located in the first non-folding region 1 and the second non-folding region 2, so that the two portions of the flexible display panel 13 cannot be directly contacted, and the flexible display panel 13 is effectively prevented from being folded.
Alternatively, as shown in fig. 9 and 10, fig. 9 is a schematic structural diagram of a bottom plate of a foldable display device provided in an embodiment of the present invention in an unfolding mode, fig. 10 is a schematic structural diagram of a bottom plate of a foldable display device provided in an embodiment of the present invention in a folding mode, a first bottom plate 20 includes a first non-telescopic plate 25 and a first telescopic plate 26, the first non-telescopic plate 25 is located in the first non-folding area 1, the first telescopic plate 26 is located in the folding area 3, and the first non-telescopic plate 25 is electrically connected to a hinge 22 through the first telescopic plate 26; the second bottom plate 21 comprises a second non-telescopic plate 27 and a second telescopic plate 28, the second non-telescopic plate 27 is located in the second non-folding area 2, the second telescopic plate 28 is located in the folding area 3, and the second non-telescopic plate 27 is electrically connected with the hinge 22 through the second telescopic plate 28.
When the foldable display device is switched from the unfolding mode to the folding mode, the first retractable plate 26 and the second retractable plate 28 are gradually retracted along with the movement of the first non-retractable plate 25 and the second non-retractable plate 27 during the bending process, and the first retractable plate 26 and the second retractable plate 28 are completely retracted after the bending process is finished. By utilizing the scalability of the first and second retractable plates 26, 28, the first and second retractable plates 26, 28 can be prevented from occupying space in the folded state, such that the sides of the first and second support plates 23, 24 contact the bottom surface of the rigid support structure 6, and the foldable display device reaches the final folded state.
The contraction of the first expansion plate 26 and the second expansion plate 28 may specifically refer to the contraction of the first expansion plate 26 and the second expansion plate 28, and may also refer to the contraction of the first expansion plate 26 into the first non-expansion plate 25 and the contraction of the second expansion plate 28 into the second non-expansion plate 27.
Further, the first supporting plate 23 is bonded to the first non-stretchable plate 25 and the first elastic layer 9, and the second supporting plate 24 is bonded to the second non-stretchable plate 27 and the first elastic layer 9, so that the relative positions of the supporting plate 19, the bottom plate 18 and the first elastic layer 9 are prevented from being changed during the folding process of the foldable display device, and the reliability and the stability of the arrangement of the supporting plate 19, the bottom plate 18 and the first elastic layer 9 are improved.
Alternatively, as shown in fig. 11, fig. 11 is a schematic structural diagram of a first magnet and a second magnet provided in the embodiment of the present invention, the first bottom plate 20 has a first region 29, the second bottom plate 21 has a second region 30, and in the folded mode, the first region 29 and the second region 30 are overlapped; the foldable display device further comprises a first magnet 31 and a second magnet 32, the first magnet 31 is disposed in the first area 29, the second magnet 32 is disposed in the second area 30, and the first magnet 31 and the second magnet 32 have opposite polarities. By arranging the first magnet 31 and the second magnet 32 with opposite polarities, after the foldable display device is folded, the first bottom plate 20 and the second bottom plate 21 can be fixed through the adsorption force between the first magnet 31 and the second magnet 32, so that the foldable display device reaches a final folded state, and the stability of the foldable display device in a folded mode is improved.
Further, as shown in fig. 12, fig. 12 is another schematic structural diagram of the first magnet and the second magnet according to the embodiment of the present invention, the first magnet 31 is recessed in the first bottom plate 20, the second magnet 32 protrudes from the second bottom plate 21, and after the foldable display device is folded, the second magnet 32 protruding from the second bottom plate 21 is embedded in the first area 29 of the first bottom plate 20, so as to ensure the alignment of the first bottom plate 20 and the second bottom plate 21, and after the second magnet 32 is embedded in the first area 29, the portion of the second magnet 32 protruding from the second bottom plate 21 does not occupy additional space, so that the first bottom plate 20 and the second bottom plate 21 are in close contact.
An embodiment of the present invention further provides a driving method of a foldable display device, as shown in fig. 13 with reference to fig. 1 to 3, where fig. 13 is a flowchart of the driving method provided in the embodiment of the present invention, and the driving method includes:
step S1: when the foldable display device is switched from the unfolding mode to the folding mode, the foldable support structure 5 of the support structure 4 is driven to bend, and the foldable support structure 5 drives the first elastic layer 9, the second elastic layer 10 and the flexible display panel 13 to bend, so that the roller 12 extrudes part of the first elastic layer 9 in the groove 8 of the rigid support structure 6 under the action of extrusion force.
Step S2: when the foldable display device is switched from the folding mode to the unfolding mode, the foldable support structure 5 is driven to unfold, and the foldable support structure 5 drives the first elastic layer 9, the second elastic layer 10 and the flexible display panel 13 to unfold, so that the first elastic layer 9 extruded in the groove 8 rebounds.
By adopting the driving method provided by the embodiment of the invention, when the foldable display device is driven to be folded, under the action of the bending force, the plurality of rollers 12 can form a plurality of stress applying points on the first elastic layer 9, so that the first elastic layer 9 is pressed into the plurality of grooves 8 of the rigid supporting structure 6 under the action of the multipoint stress, the stress generated by bending is dispersed, the stress dispersed to each point is uniform and has smaller strength, the stress concentration in a certain area is avoided, and the influence of the stress concentration on the service life of the flexible display panel 13 is effectively improved. Moreover, after the foldable display device is folded, the rigid support structure 6 occupies a certain space in the folding area 3, and the foldable support structure 5, the first elastic layer 9 and the second elastic layer 10 also occupy a certain space between two portions of the flexible display panel 13 located in the first non-folding area 1 and the second non-folding area 2, so that the two portions of the flexible display panel 13 cannot be in direct contact with each other, thereby effectively avoiding the occurrence of dead folding when the flexible display panel 13 is folded, and improving the service life of the flexible display panel 13.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (16)
1. A foldable display device, comprising:
a first non-folded region, a second non-folded region, and a folded region located between the first non-folded region and the second non-folded region;
the supporting structure comprises a foldable supporting structure and a rigid supporting structure, wherein the foldable supporting structure is provided with an accommodating space in the folding area, the rigid supporting structure is arranged in the accommodating space, and one side of the rigid supporting structure facing to the light emitting direction is provided with a plurality of grooves;
the first elastic layer is arranged on one side, facing the light emergent direction, of the support structure;
the second elastic layer is arranged on one side, facing the light emergent direction, of the first elastic layer, and a cavity is formed in the folding area of the second elastic layer;
a plurality of rollers disposed within the cavity;
the flexible display panel is arranged on one side, facing the light emergent direction, of the second elastic layer.
2. The foldable display device of claim 1, wherein a plurality of the rollers are non-fixedly disposed on a side of the first elastic layer facing the light emitting direction.
3. The foldable display device of claim 1, wherein the distance between two adjacent rollers is equal when the foldable display device is in the unfolded mode.
4. The foldable display device of claim 3, wherein a plurality of roller receiving grooves are formed in a side of the first elastic layer facing the roller, the roller receiving grooves are formed in the folding area, and the distance between two adjacent roller receiving grooves is equal;
the depth of the roller holding groove is smaller than the diameter of the roller.
5. The foldable display device of claim 1, wherein a thickness of the second elastic layer in a direction perpendicular to a plane of the flexible display panel is equal to a diameter of the roller.
6. The foldable display device of claim 1, wherein the first elastic layer has a modulus of elasticity that is less than a modulus of elasticity of the second elastic layer.
7. The foldable display device of claim 1, wherein the second elastic layer is bonded to the first elastic layer.
8. The foldable display device of claim 1, wherein the groove in the rigid support structure extends in a first direction, the first direction being perpendicular to a bending direction of the flexible display panel;
the groove comprises a first opening close to the first elastic layer and a second opening far away from the first elastic layer, and the width of the first opening is larger than that of the second opening.
9. The foldable display device of claim 1, wherein the folding area comprises a middle folding area and edge folding areas located at both sides of the middle folding area;
the grooves comprise a first groove and a second groove, the first groove is located in the middle folding area, the second groove is located in the edge folding area, and the width of the first groove is larger than that of the second groove.
10. The foldable display device of claim 1, wherein said groove has a depth H and a width L,
11. the foldable display device of claim 1, wherein the foldable support structure comprises:
a bottom panel including a first bottom panel and a second bottom panel, the first bottom panel being located in the first non-folding region and the folding region, the second bottom panel being located in the second non-folding region and the folding region, portions of the first and second bottom panels located in the folding region being connected by a hinge;
the backup pad, the backup pad sets up the bottom plate orientation one side of light-emitting direction, the backup pad includes first backup pad and second backup pad, first backup pad is located first non-folding district, the second backup pad is located the non-folding district of second.
12. The foldable display device of claim 11, wherein the first base panel comprises a first non-stretchable panel and a first stretchable panel, the first non-stretchable panel is located in the first non-folding region, the first stretchable panel is located in the folding region, and the first non-stretchable panel is electrically connected to the hinge through the first stretchable panel;
the second bottom plate comprises a second non-expansion plate and a second expansion plate, the second non-expansion plate is located in the second non-folding area, the second expansion plate is located in the folding area, and the second non-expansion plate is electrically connected with the hinge through the second expansion plate.
13. The foldable display device of claim 12, wherein the first support plate is bonded to the first non-stretchable panel and the first elastic layer, respectively, and the second support plate is bonded to the second non-stretchable panel and the first elastic layer, respectively.
14. The foldable display device of claim 11, wherein the first base panel has a first area and the second base panel has a second area, the first area and the second area coinciding in a folded mode;
the foldable display device further comprises a first magnet and a second magnet, the first magnet is arranged in the first area, the second magnet is arranged in the second area, and the polarities of the first magnet and the second magnet are opposite.
15. The foldable display device of claim 14, wherein the first magnet is recessed within the first base panel and the second magnet is raised from the second base panel.
16. A method of driving a foldable display device, comprising:
when the foldable display device is switched from an unfolding mode to a folding mode, the foldable support structure of the support structure is driven to bend, the foldable support structure drives the first elastic layer, the second elastic layer and the flexible display panel to bend, and a part of the first elastic layer is extruded in the groove of the rigid support structure by the rolling shaft under the action of extrusion force;
when the foldable display device is switched from the folding mode to the unfolding mode, the foldable support structure is driven to unfold, and the foldable support structure drives the first elastic layer, the second elastic layer and the flexible display panel to unfold, so that the first elastic layer extruded in the groove rebounds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010465037.7A CN111489653B (en) | 2020-05-28 | 2020-05-28 | Foldable display device and driving method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010465037.7A CN111489653B (en) | 2020-05-28 | 2020-05-28 | Foldable display device and driving method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111489653A true CN111489653A (en) | 2020-08-04 |
| CN111489653B CN111489653B (en) | 2022-04-08 |
Family
ID=71795749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010465037.7A Active CN111489653B (en) | 2020-05-28 | 2020-05-28 | Foldable display device and driving method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111489653B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112053635A (en) * | 2020-09-16 | 2020-12-08 | 京东方科技集团股份有限公司 | Supporting structure, manufacturing method thereof and display device |
| CN112863336A (en) * | 2021-01-11 | 2021-05-28 | 武汉华星光电半导体显示技术有限公司 | Display module and display device |
| CN113178133A (en) * | 2021-05-06 | 2021-07-27 | 合肥维信诺科技有限公司 | Composite support film and display device |
| CN113241010A (en) * | 2021-05-25 | 2021-08-10 | 合肥维信诺科技有限公司 | Display panel and display device |
| CN113628542A (en) * | 2021-08-05 | 2021-11-09 | 武汉华星光电半导体显示技术有限公司 | Folding display device and folding structure |
| CN114255661A (en) * | 2022-02-11 | 2022-03-29 | 武汉天马微电子有限公司 | Foldable display device and folding control method thereof |
| CN115171527A (en) * | 2022-06-20 | 2022-10-11 | 昆山国显光电有限公司 | Display panel manufacturing method and display panel |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20150069983A (en) * | 2013-12-16 | 2015-06-24 | 주식회사 세네카 | Hinge Module for Flexible Display Device |
| CN104916230A (en) * | 2015-06-02 | 2015-09-16 | 京东方科技集团股份有限公司 | Flexible display device |
| TW201627963A (en) * | 2015-01-28 | 2016-08-01 | 友達光電股份有限公司 | Display device |
| TWI566077B (en) * | 2015-11-05 | 2017-01-11 | 宏碁股份有限公司 | Display |
| CN106328599A (en) * | 2016-10-27 | 2017-01-11 | 上海天马微电子有限公司 | Flexible display device |
| CN109461383A (en) * | 2018-12-13 | 2019-03-12 | 武汉华星光电半导体显示技术有限公司 | Foldable display device |
| KR20190072237A (en) * | 2017-12-15 | 2019-06-25 | 엘지디스플레이 주식회사 | Foldable display device |
| CN110148620A (en) * | 2019-06-26 | 2019-08-20 | 昆山国显光电有限公司 | A kind of display panel and display device |
| CN209418505U (en) * | 2019-02-14 | 2019-09-20 | 上海和辉光电有限公司 | A kind of flexible display apparatus |
| CN110473466A (en) * | 2018-05-11 | 2019-11-19 | 三星显示有限公司 | Show equipment |
| CN210075297U (en) * | 2019-02-22 | 2020-02-14 | 华为技术有限公司 | Supporting structure and foldable display device |
| CN111047988A (en) * | 2019-12-03 | 2020-04-21 | 上海天马有机发光显示技术有限公司 | Display device |
| CN111064833A (en) * | 2020-01-17 | 2020-04-24 | 昆山国显光电有限公司 | Folding assembly and foldable display device |
| CN111179760A (en) * | 2020-02-21 | 2020-05-19 | 京东方科技集团股份有限公司 | Display panel and bending method of display panel |
| CN210627727U (en) * | 2019-12-24 | 2020-05-26 | 上海和辉光电有限公司 | Folding display device |
-
2020
- 2020-05-28 CN CN202010465037.7A patent/CN111489653B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20150069983A (en) * | 2013-12-16 | 2015-06-24 | 주식회사 세네카 | Hinge Module for Flexible Display Device |
| TW201627963A (en) * | 2015-01-28 | 2016-08-01 | 友達光電股份有限公司 | Display device |
| CN104916230A (en) * | 2015-06-02 | 2015-09-16 | 京东方科技集团股份有限公司 | Flexible display device |
| TWI566077B (en) * | 2015-11-05 | 2017-01-11 | 宏碁股份有限公司 | Display |
| CN106328599A (en) * | 2016-10-27 | 2017-01-11 | 上海天马微电子有限公司 | Flexible display device |
| KR20190072237A (en) * | 2017-12-15 | 2019-06-25 | 엘지디스플레이 주식회사 | Foldable display device |
| CN110473466A (en) * | 2018-05-11 | 2019-11-19 | 三星显示有限公司 | Show equipment |
| CN109461383A (en) * | 2018-12-13 | 2019-03-12 | 武汉华星光电半导体显示技术有限公司 | Foldable display device |
| CN209418505U (en) * | 2019-02-14 | 2019-09-20 | 上海和辉光电有限公司 | A kind of flexible display apparatus |
| CN210075297U (en) * | 2019-02-22 | 2020-02-14 | 华为技术有限公司 | Supporting structure and foldable display device |
| CN110148620A (en) * | 2019-06-26 | 2019-08-20 | 昆山国显光电有限公司 | A kind of display panel and display device |
| CN111047988A (en) * | 2019-12-03 | 2020-04-21 | 上海天马有机发光显示技术有限公司 | Display device |
| CN210627727U (en) * | 2019-12-24 | 2020-05-26 | 上海和辉光电有限公司 | Folding display device |
| CN111064833A (en) * | 2020-01-17 | 2020-04-24 | 昆山国显光电有限公司 | Folding assembly and foldable display device |
| CN111179760A (en) * | 2020-02-21 | 2020-05-19 | 京东方科技集团股份有限公司 | Display panel and bending method of display panel |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112053635A (en) * | 2020-09-16 | 2020-12-08 | 京东方科技集团股份有限公司 | Supporting structure, manufacturing method thereof and display device |
| CN112053635B (en) * | 2020-09-16 | 2022-08-12 | 京东方科技集团股份有限公司 | Supporting structure, manufacturing method thereof and display device |
| CN112863336A (en) * | 2021-01-11 | 2021-05-28 | 武汉华星光电半导体显示技术有限公司 | Display module and display device |
| CN112863336B (en) * | 2021-01-11 | 2022-07-12 | 武汉华星光电半导体显示技术有限公司 | Display module and display device |
| CN113178133A (en) * | 2021-05-06 | 2021-07-27 | 合肥维信诺科技有限公司 | Composite support film and display device |
| CN113241010A (en) * | 2021-05-25 | 2021-08-10 | 合肥维信诺科技有限公司 | Display panel and display device |
| CN113628542A (en) * | 2021-08-05 | 2021-11-09 | 武汉华星光电半导体显示技术有限公司 | Folding display device and folding structure |
| CN114255661A (en) * | 2022-02-11 | 2022-03-29 | 武汉天马微电子有限公司 | Foldable display device and folding control method thereof |
| CN114255661B (en) * | 2022-02-11 | 2023-09-12 | 武汉天马微电子有限公司 | Foldable display device and folding control method thereof |
| CN115171527A (en) * | 2022-06-20 | 2022-10-11 | 昆山国显光电有限公司 | Display panel manufacturing method and display panel |
| CN115171527B (en) * | 2022-06-20 | 2023-10-27 | 昆山国显光电有限公司 | Display panel manufacturing method and display panel |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111489653B (en) | 2022-04-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111489653B (en) | Foldable display device and driving method thereof | |
| US10310566B2 (en) | Foldable mechanism of mobile terminal and mobile terminal | |
| US11395415B2 (en) | Display device with hinge structure | |
| US10013027B2 (en) | Flexible display device | |
| US10827631B2 (en) | Foldable display and foldable display device | |
| US10817026B2 (en) | Foldable terminal | |
| US9250733B2 (en) | Hinge device and foldable display apparatus having the same | |
| US11960324B2 (en) | Shaft support structure, and display device and assembling method therefor | |
| US20180192527A1 (en) | Foldable Display Device | |
| US10338641B2 (en) | Smart bracelet | |
| US11789493B2 (en) | Folded support, display, keyboard and electrical appliance | |
| CN110580860B (en) | Folding display device | |
| CN111951683B (en) | Display device | |
| TW202013328A (en) | Foldable display device | |
| WO2021017247A1 (en) | Foldable display apparatus | |
| CN110570760B (en) | Foldable flexible display device | |
| CN111779954B (en) | Electronic equipment | |
| CN110807993B (en) | Display device | |
| KR101524921B1 (en) | Method for Folding of Foldable Display Apparatus | |
| CN114038345A (en) | Display module and display device | |
| CN213150200U (en) | Cover plate and foldable display device | |
| CN114697435B (en) | Folding assembly and terminal equipment | |
| US11811958B2 (en) | Foldable terminal | |
| US11421819B2 (en) | Display device | |
| US20240023261A1 (en) | Foldable display apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |