CN114613256A - Flexible display module and electronic equipment - Google Patents
Flexible display module and electronic equipment Download PDFInfo
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- CN114613256A CN114613256A CN202011447150.9A CN202011447150A CN114613256A CN 114613256 A CN114613256 A CN 114613256A CN 202011447150 A CN202011447150 A CN 202011447150A CN 114613256 A CN114613256 A CN 114613256A
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- flexible display
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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 flexible display module and electronic equipment, and relates to the technical field of flexible display equipment. The flexible display module comprises a functional layer, a back plate, a flexible piece and a bending compensation structure; the functional layer is arranged on the back plate; the bending compensation structure is arranged on one side of the back plate far away from the functional layer; the flexible piece is arranged in a bending mode, one end of the flexible piece is connected with the functional layer, and the other end of the flexible piece is connected with the bending compensation structure; when the flexible display module is bent or flattened, the bending compensation structure drives the flexible piece to perform compensation motion. According to the flexible display module provided by the invention, the flexible piece is driven to perform compensation motion through the bending compensation structure, so that the flexible piece is kept in a regular bent shape, the stress concentration at the connecting end of the flexible piece is effectively avoided, the flexible piece is protected from being damaged, and the service life is prolonged.
Description
Technical Field
The invention relates to the technical field of flexible display equipment, in particular to a flexible display module and electronic equipment.
Background
At present, flexible display equipment is connected with the back of a flexible circuit board connected with one side of a display screen in a reversely-folded and bent mode in order to avoid a large frame on the display surface of the display screen.
Although the connection mode that the flexible circuit board is turned over and is rolled over crooked among the prior art reduces big frame, when the display screen buckles, relative slip can appear between each rete in the display screen, and then can drag flexible circuit board for the originally crooked regular circular arc of flexible circuit board becomes anomalous curve arc. The stress concentration occurs at the connection position of the flexible circuit board, and the circuit in the flexible circuit board is broken when the stress concentration is serious, so that the flexible circuit board is damaged.
Disclosure of Invention
For overcoming not enough among the prior art, the application provides a flexible display module assembly and electronic equipment for can appear relative sliding between each rete in the display screen among the solution prior art, lead to the flexible circuit board junction to appear stress concentration, damage flexible circuit board's technical problem.
In order to achieve the above object, in a first aspect, the present application provides a flexible display module, which includes a functional layer, a back plate, a flexible member, and a bending compensation structure;
the functional layer is arranged on the back plate;
the bending compensation structure is arranged on one side of the back plate far away from the functional layer;
the flexible piece is arranged in a bending mode, one end of the flexible piece is connected with the functional layer, and the other end of the flexible piece is connected with the bending compensation structure;
when the flexible display module is bent or unfolded, the bending compensation structure drives the flexible piece to perform compensation motion.
In a possible embodiment, when the flexible display module is bent or unfolded, the functional layer generates relative movement with respect to the bending compensation structure, and the compensation motion of the bending compensation structure is used to counteract or attenuate the relative movement.
In a possible embodiment, the direction of the compensating motion coincides with the direction of the relative movement.
In a possible embodiment, inflection points are respectively formed between the flexible member and the functional layer and between the flexible member and the bending compensation structure along a thickness direction of the flexible display module, and the compensation motion is used for keeping a connection line distance between the two inflection points constant.
In one possible embodiment, the bending compensation structure includes a driving assembly, a first compensation support and a second compensation support;
the first compensation support is connected with the back plate;
the second compensation support is in sliding fit with the first compensation support, and the second compensation support is connected with the flexible part;
the driving assembly is connected with the second compensation supporting piece and used for driving the second compensation supporting piece to drive the flexible piece to perform compensation movement.
In a possible embodiment, the first and/or the second compensation support are of sheet-like construction.
In a possible embodiment, a bonding glue layer is disposed between the first compensation support and the back plate.
In a possible embodiment, the driving assembly includes a motor and a transmission member, the motor is connected to the transmission member, the transmission member is connected to the second compensation support member, and the motor drives the second compensation support member to perform the compensation motion through the transmission member.
In one possible embodiment, the drive comprises one of a linkage, a chain drive, a rack and pinion drive, and a cam drive.
In a possible embodiment, the transmission member comprises a toothed wheel, and the second compensating support is provided with a toothing that meshes with the toothed wheel.
In a possible implementation manner, the flexible display module further includes a hinge structure disposed on a side of the backplane away from the functional layer and at least two middle frames, where the functional layer includes a bending region and non-bending regions located on two sides of the bending region;
the two middle frames respectively correspond to the two non-bending areas, the hinge structure is located in the bending areas and connected with the two middle frames, and the bending compensation structure is arranged close to the middle frame of the flexible piece.
In a possible implementation manner, the bending compensation structure further includes a position detection mechanism, the position detection mechanism is connected to the driving assembly, the position detection mechanism is configured to detect displacement information of the functional layer and feed the displacement information back to the driving assembly, and the driving assembly drives the second compensation support to perform a compensation motion.
In a possible embodiment, the position detecting mechanism includes an optical detector, the optical detector is disposed in one of the middle frames, the functional layer is disposed with a sensing mark, and the sensing mark is close to the flexible member, and the optical detector is configured to detect a position change of the sensing mark.
In a possible embodiment, the position detection mechanism comprises an angle detector, which is arranged at the hinge structure.
In one possible embodiment, the flexible member is a portion extending outwardly from the functional layer.
In one possible embodiment, the flexible member is a flexible circuit board.
In one possible embodiment, the functional layer comprises a display layer.
In one possible embodiment, the functional layer comprises a touch layer.
In a second aspect, the present application further provides an electronic device including the flexible display module provided above.
Compared with the prior art, the beneficial effects of the application are that:
according to the flexible display module and the electronic equipment, the flexible display module comprises a functional layer, a back plate, a flexible piece and a bending compensation structure; the functional layer is arranged on the back plate; the bending compensation structure is arranged on one side of the back plate far away from the functional layer; the flexible piece is arranged in a bending mode, one end of the flexible piece is connected with the functional layer, and the other end of the flexible piece is connected with the bending compensation structure; when the flexible display module is bent or flattened, the bending compensation structure drives the flexible piece to perform compensation motion. The application provides a flexible display module assembly drives the flexible piece through buckling the compensation structure and carries out the compensation motion for the flexible piece keeps regular crooked shape, has effectively avoided the flexible piece link stress concentration to appear, and protection flexible piece avoids damaging increase of service life.
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, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram illustrating a flat state of a flexible display module according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram illustrating a bending compensation structure of a first flexible display module provided in an embodiment of the present application when the bending compensation structure does not perform bending compensation motion in a bending state;
fig. 3 is a schematic structural diagram illustrating the bending compensation structure provided in fig. 2 after bending compensation motion is performed on the bending compensation structure in a bending state;
fig. 4 is a schematic structural diagram illustrating a bent state of a second flexible display module according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram illustrating a bent state of a third flexible display module according to an embodiment of the present disclosure;
fig. 6 is a schematic structural diagram illustrating a bent state of a fourth flexible display module according to an embodiment of the present application;
fig. 7 is a schematic structural diagram illustrating a bending state of a fifth flexible display module according to an embodiment of the present disclosure;
fig. 8 is a schematic structural diagram illustrating a bent state of a sixth flexible display module according to an embodiment of the present disclosure;
fig. 9 is a schematic structural diagram illustrating a bending state of a seventh flexible display module according to an embodiment of the present application;
fig. 10 is a schematic structural diagram illustrating an angle detector detecting an opening and closing angle in a bending compensation structure according to an embodiment of the present application.
Description of the main element symbols:
100-a flexible display module; 100 a-bending zone; 100 b-a non-inflection zone; 110-a functional layer; 110 a-sensing indicia; 111-a display layer; 112-a touch layer; 120-a back-plate; 130-a flexible member; 140-a buckling compensation structure; 141-a first compensation support; 142-a second compensating support; 143-a drive assembly; 1430-an electric machine; 1431 — a transmission; 144-a bonding glue layer; 145-position detection means; 1450 — an optical detector; 1451-angle detector; 150-middle frame; 151-first middle frame; 152-a second middle frame; 160-hinge structure; 170-flexible cover plate.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
Example one
Referring to fig. 1 to 4, in the flexible display module 100 provided in this embodiment, when the flexible display module 100 is bent or flattened, the flexible element 130 in the flexible display module 100 maintains a regular curved shape through compensation motion, so that stress concentration at the connection end of the flexible element 130 is effectively avoided, the flexible element 130 is protected from being damaged, and the service life is prolonged.
Referring to fig. 1, the flexible display module 100 of the present embodiment includes a functional layer 110, a back plate 120, a flexible element 130, and a bending compensation structure 140. The functional layer 110 is disposed on the back plate 120, and the bending compensation structure 140 is disposed on a side of the back plate 120 away from the functional layer 110.
It is understood that the functional layer 110 is a flexible structure, and the functional layer 110 can be used for display or touch operation; the back plate 120 is used to provide support for the functional layer 110, and therefore, the back plate 120 is also made of a flexible material. That is, when the flexible display module 100 is bent, the functional layer 110 and the back plate 120 are bent together.
In some embodiments, the functional layer 110 is optionally a display layer 111 or a touch layer 112, where the display layer 111 is used for displaying information and the touch layer 112 is used for providing touch operation.
In other embodiments, the functional layer 110 may optionally include a display layer 111 and a touch layer 112, that is, the functional layer 110 may display information and perform touch operation.
Referring to fig. 1, fig. 2 and fig. 3, the flexible element 130 is disposed in a bending manner, one end of the flexible element 130 is connected to the functional layer 110, and the other end of the flexible element 130 is connected to the bending compensation structure 140. The flexible member 130 can connect the functional layer 110 with an electronic component disposed on a side of the backplate 120 away from the functional layer 110.
Further, optionally, the flexible element 130 is bent into a semi-circular arc shape, and a connecting line of the flexible element 130 and the two connecting ends of the functional layer 110 and the bending compensation structure 140 is a diameter of the semi-circular arc. In other words, the extension lines of the functional layer 110 and the bending compensation structure 140 are respectively tangent to the flexible element 130, wherein the extension lines of the functional layer 110 and the bending compensation structure 140 are parallel to each other, thereby ensuring a smooth transition of the flexible element 130 to the functional layer 110 and the bending compensation structure 140.
It should be noted that, as shown in fig. 1, when the flexible display module 100 is in a flat state, the end of the functional layer 110 is aligned with the end of the back plate 120, and since the functional layer 110 and the back plate 120 both have a certain thickness, when the functional layer 110 and the back plate 120 are bent, the bending radii of the bending regions 100a are different, so that the functional layer 110 and the back plate 120 can move relative to each other, and after the relative movement, the originally aligned ends of the functional layer 110 and the back plate 120 are misaligned, and the functional layer 110 can drive the flexible element 130 to move together.
That is, as shown in fig. 2, the originally regular bending structure of the flexible element 130 may be changed into an irregular shape, which may cause a change in a tangential state between the extension lines of the functional layer 110 and the bending compensation structure 140 and the flexible element 130, especially, a tangential state between the connection ends of the flexible element 130 and the bending compensation structure 140 may be changed into an intersecting state, which may cause a stress concentration phenomenon, and in a serious case, a connection failure of the flexible element 130 may occur, which may cause the flexible display module 100 to fail to operate normally.
In some embodiments, the flexible member 130 is a flexible circuit board that is coupled to the functional layer 110 to provide electrical power and information transfer to the functional layer 110.
Therefore, in this embodiment, when the flexible display module 100 is bent or flattened, the bending compensation structure 140 drives the flexible element 130 to perform compensation motion, and the compensation motion counteracts or weakens the relative displacement between the functional layer 110 and the backplate 120, so that the flexible element 130 maintains a regular curved shape, which effectively prevents the stress concentration at the connection end of the flexible element 130, protects the flexible element 130 from being damaged, and prolongs the service life.
That is, the bending compensation structure 140 drives the flexible element 130 to perform a compensation motion, such that the functional layer 110 and the bending compensation structure 140 are closer to a tangent to the flexible element 130, and the flexible element 130 maintains a regular curved shape.
In some embodiments, the direction of the compensation motion of the flexible member 130 by the bending compensation structure 140 is consistent with the moving direction of the functional layer 110 relative to the back plate 120.
That is, when the flexible display module 100 performs a bending or flattening motion, if the end of the functional layer 110 moves in a direction away from the end of the back plate 120, the bending compensation structure 140 drives the flexible element 130 to move in a direction away from the end of the back plate 120; if the functional layer 110 moves toward the end of the backplate 120, the bending compensation structure 140 drives the flexible member 130 to move toward the end of the backplate 120.
It should be understood that the above-described relative movement is referred to an end of the flexible display module 100 where the flexible member 130 is disposed.
Example two
Referring to fig. 1 to 4, the flexible display module 100 provided in this embodiment passes through compensation motion during bending or flattening. The present embodiment is an improvement on the technology of the first embodiment, and compared with the first embodiment, the difference is that:
in this embodiment, the flexible element 130 is a portion extending outward from the functional layer 110, that is, the flexible element 130 and the functional layer 110 are integrated, and one end of the flexible element 130 away from the functional layer 110 is bent and then connected to the bending compensation structure 140 disposed on the back plate 120.
Therefore, along the thickness direction of the flexible display module 100, inflection points are respectively formed between the flexible element 130 and the functional layer 110 and between the flexible element 130 and the bending compensation structure 140, and smooth transition of the bent flexible element 130 to a straight line is realized at the inflection points.
In some embodiments, the flexible member 130 is optionally curved in a semi-circular arc shape, and the length of the connection line between the two inflection points is equal to the diameter of the semi-circular arc.
Furthermore, the compensation motion is used for keeping the distance of the connecting line between the two inflection points unchanged, so that the flexible part 130 can keep a regular bent shape, the stress concentration at the connecting end of the flexible part 130 is effectively avoided, the flexible part 130 is protected from being damaged, and the service life is prolonged.
EXAMPLE III
Referring to fig. 1 to 4, the flexible display module 100 provided in this embodiment passes through compensation motion during bending or flattening. The present embodiment is an improvement made on the basis of the technology of the first embodiment or the second embodiment, and compared with the first embodiment or the second embodiment, the difference is that:
referring to fig. 1 and fig. 3, in the present embodiment, the bending compensation structure 140 includes a driving element 143, a first compensation support 141, and a second compensation support 142. The first compensation support 141 is connected to the back plate 120, the second compensation support 142 is slidably engaged with the first compensation support 141, the second compensation support 142 is connected to the flexible member 130, the driving assembly 143 is connected to the second compensation support 142, and the driving assembly 143 is configured to drive the second compensation support 142 to drive the flexible member 130 to perform compensation motion.
It can be understood that, in the present embodiment, the second compensation support 142 is located on a side of the first compensation support 141 away from the back plate 120, and the first compensation support 141 and the second compensation support 142 can slide relatively without being attached.
Further, the first compensating supporter 141 is connected to the back plate 120 by adhesion or screws, so as to fix the first compensating supporter 141 to the back plate 120.
In this embodiment, the first compensation supporting member 141 and the back plate 120 are connected by adhesion, and the adhesion connection has good stability and is not easy to fall off.
Specifically, a bonding adhesive layer 144 is disposed between the first compensation support 141 and the back plate 120, and the thickness of the bonding adhesive layer 144 is 100 μm to 500 μm, and the modulus is lower than 0.1Mpa to 50 Mpa. The adhesive layer 144 is disposed to connect the first compensation supporter 141 and the back plate 120, and to provide a small compensation for the movement of the first compensation supporter 141 relative to the back plate 120, so as to resist or reduce the friction force generated by the relative sliding between the second compensation supporter 142 and the first compensation supporter 141.
In some embodiments, the first compensating support 141 or the second compensating support 142 is a sheet structure. In the present embodiment, the first and second compensation supporters 141 and 142 each have a sheet structure.
Wherein the first compensation supporter 141 is provided as a sheet structure for the purpose of: the bonding area between the first compensating supporter 141 and the back plate 120 is increased, thereby improving the stability of the connection between the first compensating supporter 141 and the back plate 120. The second compensation supporter 142 is also provided in a sheet structure in order to reduce the thickness of the second compensation supporter 142 and simultaneously improve the structural strength of the second compensation supporter 142.
Optionally, the first compensation supporting member 141 and the second compensation supporting member 142 are made of metal, and the surfaces of the first compensation supporting member 141 and the second compensation supporting member 142 close to each other are designed to be smooth surfaces, so as to reduce friction force during sliding.
As described above, the driving assembly 143 includes the motor 1430 and the transmission member 1431, the motor 1430 is connected to the transmission member 1431, the transmission member 1431 is connected to the second compensation supporting member 142, and the motor 1430 drives the second compensation supporting member 142 to perform the compensation movement through the transmission member 1431.
Further, the motor 1430 may be disposed on the first compensating supporter 141, but of course, the motor 1430 may also be disposed in the middle frame 150 connected to the back plate 120, wherein the motor 1430 is a micro motor 1430.
It will also be appreciated that the transmission 1431 is used to convert the rotational motion output by the motor 1430 into a reciprocating motion that can be in a linear direction. The drive member 1431 comprises one of a linkage rod, a chain drive, a rack and pinion drive, and a cam drive. The foregoing is illustrative only and is not to be construed as limiting the scope of the invention.
In some embodiments, when the drive member 1431 is selected to be a linkage rod, the linkage rod may be selected to be a slider-crank mechanism; when the transmission member 1431 selects a chain transmission member, the chain wheel in the chain transmission member is connected with the output shaft of the motor 1430, and the chain is connected with the second compensation support member 142; when the transmission member 1431 is a rack and pinion transmission member, a gear in the rack and pinion transmission member is connected to an output shaft of the motor 1430, and a rack is disposed on the second compensation support member 142; when the transmission member 1431 is a cam transmission member, the cam in the cam transmission member is connected to the output shaft of the motor 1430, and the cam is connected to the second compensation supporting member 142 through a connecting rod, wherein the connecting rod is hinged to both the cam and the second compensation supporting member 142.
Referring to fig. 4, in another embodiment, the transmission member 1431 includes a gear, and the second compensation supporting member 142 is provided with a convex tooth engaged with the gear. In other words, the output shaft of the motor 1430 is provided with a gear, and the second compensating supporter 142 is provided with teeth like a rack, which are engaged with the gear.
Example four
Referring to fig. 1 to 10, the flexible display module 100 provided in this embodiment passes through a compensation motion during bending or flattening. The present embodiment is an improvement on the technology of the third embodiment, and compared with the third embodiment, the difference is that:
referring to fig. 2 and fig. 3, in the present embodiment, the flexible display module 100 further includes a hinge structure 160 disposed on a side of the backplate 120 away from the functional layer 110 and at least two middle frames 150, and the functional layer 110 includes a bending region 100a and non-bending regions 100b disposed on two sides of the bending region 100 a.
In this embodiment, the number of the middle frames 150 is two, the two middle frames 150 are respectively a first middle frame 151 and a second middle frame 152, wherein the first middle frame 151 and the second middle frame 152 are respectively located in the non-bending region 100b, the bending compensation structure 140 is disposed in the first middle frame 151, the hinge structure 160 is located in the bending region 100a, and the hinge structure 160 connects the first middle frame 151 and the second middle frame 152.
Further, the flexible display module 100 can be folded in an inward folding manner or an outward folding manner. It can be understood that, when the flexible display module 100 is bent inward, the first middle frame 151 and the second middle frame 152 are deviated from each other after the flexible display module 100 is bent; when the flexible display module 100 is bent outward, the first middle frame 151 and the second middle frame 152 are close to each other after the flexible display module 100 is bent.
Referring to fig. 1 and fig. 5, in the present embodiment, the bending compensation structure 140 further includes a position detection mechanism 145, the position detection mechanism 145 is electrically connected to the driving component 143, the position detection mechanism 145 is configured to detect displacement information of the functional layer 110 and feed the displacement information back to the driving component 143, the driving component 143 drives the second compensation support 142 to perform compensation motion, and specifically, the driving component 143 drives the second compensation support 142 to perform compensation motion through the transmission member 1431.
Referring to fig. 5, in some embodiments, the position detecting mechanism 145 includes an optical detector 1450, the optical detector 1450 is disposed in the first middle frame 151, the functional layer 110 is disposed with the sensing mark 110a, and the sensing mark 110a is close to the flexible member 130, and the optical detector 1450 is configured to detect a position change of the sensing mark 110a and feed back the position change information to the motor 1430. It is understood that the sensing mark 110a may be a mark depicted on the functional layer 110 or may be a feature disposed on the functional layer 110.
Therein, the optical detector 1450 aligns the sensing mark 110a on the functional layer 110 such that the movable range of the sensing mark 110a is within the detection range of the optical detector 1450. Meanwhile, it can be understood that, along the light emitting path of the optical detector 1450, light holes are formed on the second compensation supporter 142, the first compensation supporter 141, and the back plate 120, or light-transmitting members are disposed on the light holes.
Referring to fig. 6 and 7, in other embodiments, when the flexible display module 100 is bent outward, the optical detector 1450 may be disposed inside the second middle frame 152, such that light holes (not shown) are disposed on the second middle frame 152, the first middle frame 151, the second compensation support 142, the first compensation support 141, and the back plate 120 along the light emitting path of the optical detector 1450.
Referring to fig. 8, 9 and 10, in other embodiments, the position detecting mechanism 145 includes an angle detector 1451, and the angle detector 1451 is disposed on the hinge structure 160, it can be understood that when the flexible display module 100 is bent and unfolded, the hinge structure 160 will also operate accordingly, so as to realize the opening and closing operation of the angle detector 1451, and the angle detector 1451 detects the opening and closing angle θ and feeds back the opening and closing angle θ to the motor 1430.
The flexible display module 100 provided by the embodiment detects the displacement information of the functional layer 110 through the detection mechanism, and then controls the bending compensation structure 140 to execute compensation motion in time according to the displacement information, so that the purpose of quick and accurate compensation is realized, the flexible member 130 keeps a regular bending shape, the stress concentration at the connecting end of the flexible member 130 is effectively avoided, the flexible member 130 is protected from being damaged, and the service life is prolonged.
EXAMPLE five
Referring to fig. 1 to 9, an electronic device provided in the present embodiment includes the flexible display module 100 provided in any one of the embodiments.
It is understood that the electronic device provided in the present embodiment is a flexible electronic device, and the flexible electronic device further includes a circuit board and other electrical components disposed in the middle frame 150.
In this embodiment, the flexible display module 100 further includes a flexible cover plate 170, and the flexible cover plate 170 is disposed on a side of the functional layer 110 away from the back plate 120, and is used for providing protection for the functional layer 110.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (19)
1. A flexible display module is characterized by comprising a functional layer, a back plate, a flexible piece and a bending compensation structure;
the functional layer is arranged on the back plate;
the bending compensation structure is arranged on one side of the back plate far away from the functional layer;
the flexible piece is arranged in a bending mode, one end of the flexible piece is connected with the functional layer, and the other end of the flexible piece is connected with the bending compensation structure;
when the flexible display module is bent or unfolded, the bending compensation structure drives the flexible piece to perform compensation motion.
2. The flexible display module of claim 1, wherein the functional layer moves relative to the bend compensation structure when the flexible display module is bent or unfolded, and the compensation motion of the bend compensation structure is used to counteract or attenuate the relative movement.
3. The flexible display module of claim 2, wherein the direction of the compensating motion coincides with the direction of the relative movement.
4. The flexible display module according to claim 2, wherein inflection points are formed between the flexible member and the functional layer and between the flexible member and the bending compensation structure in a thickness direction of the flexible display module, and the compensation motion is used to keep a connection line distance between the two inflection points constant.
5. The flexible display module of any one of claims 1-4, wherein the bend compensation structure comprises a driving assembly, a first compensation support, and a second compensation support;
the first compensation support is connected with the back plate;
the second compensation support is in sliding fit with the first compensation support, and the second compensation support is connected with the flexible part;
the driving assembly is connected with the second compensation supporting piece and used for driving the second compensation supporting piece to drive the flexible piece to perform compensation movement.
6. The flexible display module of claim 5, wherein the first compensation support and/or the second compensation support is a sheet structure.
7. The flexible display module of claim 5, wherein a bonding adhesive layer is disposed between the first compensation support and the back plate.
8. The flexible display module according to claim 5, wherein the driving assembly comprises a motor and a transmission member, the motor is connected to the transmission member, the transmission member is connected to the second compensation supporting member, and the motor drives the second compensation supporting member to perform the compensation motion through the transmission member.
9. The flexible display module of claim 8, wherein the drive comprises one of a linkage rod, a chain drive, a rack and pinion drive, and a cam drive.
10. The flexible display module of claim 8, wherein the transmission member comprises a gear, and the second compensation support has a protruding tooth engaged with the gear.
11. The flexible display module according to claim 5, further comprising a hinge structure disposed on a side of the back plate away from the functional layer and at least two middle frames, wherein the functional layer comprises a bending region and non-bending regions disposed on two sides of the bending region;
the two middle frames correspond to the two non-bending areas respectively, the hinge structure is located in the bending areas and connected with the two middle frames, and the bending compensation structure is arranged on the middle frame close to the flexible piece.
12. The flexible display module according to claim 11, wherein the bending compensation structure further comprises a position detection mechanism, the position detection mechanism is connected to the driving assembly, the position detection mechanism is configured to detect displacement information of the functional layer and feed the displacement information back to the driving assembly, and the driving assembly drives the second compensation supporter to perform a compensation motion.
13. The flexible display module of claim 12, wherein the position detection mechanism comprises an optical detector disposed in one of the middle frames, the functional layer is disposed with an inductive mark, the inductive mark is close to the flexible member, and the optical detector is configured to detect a position change of the inductive mark.
14. The flexible display module of claim 12, wherein the position detection mechanism comprises an angle detector disposed on the hinge structure.
15. The flexible display module of claim 1, wherein the flexible member is a portion extending outward from the functional layer.
16. The flexible display module of claim 1, wherein the flexible member is a flexible circuit board.
17. The flexible display module of claim 1, wherein the functional layer comprises a display layer.
18. The flexible display module of claim 1, wherein the functional layer comprises a touch layer.
19. An electronic device, comprising the flexible display module according to any one of claims 1-18.
Priority Applications (1)
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Cited By (1)
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| CN115346441A (en) * | 2022-08-22 | 2022-11-15 | 京东方科技集团股份有限公司 | Flexible display device and control method thereof |
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