CN113870710B - Flexible display device - Google Patents
Flexible display device Download PDFInfo
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- CN113870710B CN113870710B CN202111151706.4A CN202111151706A CN113870710B CN 113870710 B CN113870710 B CN 113870710B CN 202111151706 A CN202111151706 A CN 202111151706A CN 113870710 B CN113870710 B CN 113870710B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
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- 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
- G09F9/33—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 being semiconductor devices, e.g. diodes
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Abstract
The application provides a flexible display device, which comprises a flexible screen and a shell, wherein at least part of the flexible screen is accommodated in the shell, and a leveling mechanism is accommodated in the shell; when the flexible screen performs flattening movement, the flexible screen stretches out of the shell and expands; when the flexible screen performs rolling movement, the flexible screen is further contained in the shell; the flexible screen is provided with a positioning mechanism extending along the unfolding direction of the flexible screen; in the process of flattening movement or rolling movement of the flexible screen, the positioning mechanism and the leveling mechanism relatively displace on the extending path of the positioning mechanism and are meshed or attracted in a first direction, and the first direction is perpendicular to the plane of the flexible screen in the flattened state. According to the technical scheme, the flexible screen can move in the winding and flattening process and can not warp in the area close to the winding shaft, the flexible screen is kept flat all the time in the winding and flattening process, the display function of the flexible screen is not affected, the touch problem of a user in use is eliminated, and the use experience of the user is enhanced.
Description
[ field of technology ]
The application relates to the technical field of flexible screens, in particular to a flexible display device.
[ background Art ]
With the rapid development of flexible screen technology, more and more electronic products use flexible screens, the requirements of users on the quality of the flexible screens and the use experience of the flexible screens are the water-rise ship height. When the conventional flexible screen is rolled on the rotating shaft, an area on the flexible screen is changed from a plane to a curved surface, so that an uneven area 1' appears, and as shown in fig. 1 and 2, when the flexible screen is in an unfolding state and a curling state, simulation results of the uneven area 1' show that the uneven area 1' is positioned close to the rotating shaft. That is, when the flexible screen is changed from a flat surface to a curved surface, an uneven area 1 'appears, and the uneven area 1' causes not only display problems but also touch problems in use experience.
[ application ]
In order to solve the above problems, the present application provides a flexible display device.
In a first aspect, the application discloses a flexible display device comprising a flexible screen and a housing, at least part of the flexible screen is accommodated in the housing, and a leveling mechanism is accommodated in the housing;
when the flexible screen performs flattening movement, the flexible screen stretches out of the shell and expands; when the flexible screen performs rolling motion, the flexible screen is further contained in the shell;
the flexible screen is provided with a positioning mechanism extending along the unfolding direction of the flexible screen;
in the process that the flexible screen performs the flattening motion or the rolling motion, the positioning mechanism and the leveling mechanism relatively displace on the extending path of the positioning mechanism and are meshed or attracted in a first direction, and the first direction is perpendicular to the plane where the flexible screen is in the flattened state.
According to the flexible display device disclosed by the embodiment of the application, the flexible screen can move in the winding and flattening process and can not warp in the area close to the winding shaft, so that the flexible screen can be kept flat all the time in the winding and flattening process, the display function of the flexible screen can not be influenced, the touch problem of a user in use is eliminated, and the use experience of the user is enhanced.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed 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 application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a prior art flexible screen in an expanded state;
FIG. 2 is a schematic illustration of a prior art flexible screen in a rolled state;
FIG. 3 is a schematic side view of a flexible display device according to an embodiment of the present application;
FIG. 4 is a schematic view of a flexible display device according to an embodiment of the present application in a rolled-up screen and flattened state;
FIG. 5 is a schematic diagram of a flexible display device according to an embodiment of the present application in a rolled state;
FIG. 6 is a schematic view of a flexible display device according to an embodiment of the present application in a rolled-up screen and in a flattened state;
FIG. 7 is a schematic view of a flexible display device according to an embodiment of the present application in a rolled state;
FIG. 8 is a schematic top view of a flexible display device according to an embodiment of the present application;
FIG. 9 is a schematic top view of a flexible display device according to yet another embodiment of the present application;
FIG. 10 is a schematic top view of a flexible display device according to yet another embodiment of the present application;
FIG. 11 is a schematic top view of a flexible display device according to yet another embodiment of the present application;
FIG. 12 is a schematic top view of a flexible display device according to yet another embodiment of the present application;
fig. 13 is a schematic side view of a flexible display device according to still another embodiment of the present application.
Reference numerals:
1' -uneven areas; 1-a flexible screen; 2-a housing; 3-leveling mechanism; 4-a positioning mechanism; 5-winding shaft; a 6-transition zone; 7-a magnetic attraction layer; 8-a first rotating shaft; 9-N pole magnetic strips; 10-S pole magnetic strips; 11-N pole roller wheels; 12-S pole roller wheels; 13-an intermediate shaft; 14-a magnetic attraction part; 15-positioning grooves; 16-a second spindle; 17-positioning piece; 18-a fixed shaft; 19-teeth; 20-display surface; 21-a backlight surface; d1—a first direction; d2—axis direction; d3—direction of deployment; and D4-winding direction.
[ detailed description ] of the application
For a better understanding of the technical solution of the present application, the following detailed description of the embodiments of the present application refers to the accompanying drawings.
It should be understood that the described embodiments are merely some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The terminology used in the embodiments of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application 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 relationship describing the association of the associated objects, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.
It should be understood that although the terms first, second, third, etc. may be used in embodiments of the present application to describe directions and positions, etc., these directions and positions, etc. should not be limited to these terms. These terms are only used to distinguish one direction, position, or the like from another. For example, a first direction may also be referred to as a second direction, and similarly, a second direction may also be referred to as a first direction, without departing from the scope of embodiments of the present application.
The embodiment of the application discloses a flexible display device, which is used for solving the problem that when a flexible screen in the prior art performs flattening or rolling movement, the flexible screen is converted between a plane and a curved surface to cause an uneven area on the flexible screen, and the uneven area not only causes the display problem of the flexible display device, but also affects the use experience of a user. Therefore, the flexible display device of the embodiment enables the flexible screen to be always kept on the same plane when in motion by leveling the uneven area of the flexible screen, and eliminates the uneven area on the flexible screen.
Referring to fig. 3, fig. 3 is a schematic side view of a flexible display device according to an embodiment of the present application, where the flexible display device includes a flexible screen 1 and a housing 2, at least a portion of the flexible screen 1 is housed in the housing 2, and a leveling mechanism 3 is housed in the housing 2; when the flexible screen 1 performs flattening movement, the flexible screen 1 stretches out from the inside of the shell 2 and expands; when the flexible screen 1 performs rolling motion, the flexible screen 1 is further contained in the shell 2; the flexible screen 1 is provided with a positioning mechanism 4 extending along the unfolding direction D3; during the flattening movement or rolling movement of the flexible screen 1, the positioning mechanism 4 and the leveling mechanism 3 are relatively displaced on the extending path of the positioning mechanism 4, and are engaged or attracted in a first direction D1, and the first direction D1 is perpendicular to the plane of the flexible screen 1 in the flattened state. Wherein the extending path of the positioning mechanism 4 refers to a path through which the positioning mechanism 4 moves together with the flexible screen 1 when the flexible screen 1 performs a flattening movement or a rolling movement. The positioning mechanism 4 and the leveling mechanism 3 are meshed with each other, namely, are mutually hooked through a mechanical connecting mechanism and comprise structures such as teeth, clamping grooves, buckles and the like; the positioning mechanism 4 and the leveling mechanism 3 attract each other to apply a non-contact acting force, such as a magnetic force, to each other between the positioning mechanism 4 and the leveling mechanism 3, and then pull the positioning mechanism 4 and the leveling mechanism 3 together until the positioning mechanism and the leveling mechanism are attached by the non-contact acting force.
According to the flexible display device of the embodiment, when the flexible screen 1 performs flattening movement or rolling movement, tension can be provided for the flexible screen 1 in the movement process through the positioning mechanism 4 and the leveling mechanism 3, the tension can come from any direction, the specific direction can be determined according to actual conditions, and the flexible screen 1 is always maintained on a fixed plane during movement, so that the flattening effect of the flexible screen 1 is achieved.
Specifically, the flexible screen 1 is a display component commonly used in the market and having functions of bending, winding, folding, and the like, and is generally composed of an OLED (Organic Electroluminescence Display, organic light emitting semiconductor), and referring to fig. 4 to 7, schematic structural diagrams of the flexible screen 1 in a flattened state and a rolled state when the flexible display device is a rolled screen and a rolled screen, respectively, are shown. In fig. 4 to 7, the case 2 has a certain volume, inside which a device can be fixed, and has components of physical strength, regardless of whether the flexible display device is a roll screen or a roll screen. When the flexible display device is not in operation, the flexible screen 1 is stored in the housing 2, and as shown in fig. 5 and 7, the housing 2 can protect the flexible screen 1 from damage, and can also play a role in dust prevention, pollution prevention and moisture prevention. As shown in fig. 4 and 6, the flexible screen 1 is moved in a flattening movement or in a rolling movement in a direction D3 or D4, and since the flexible screen 1 is a sheet-like structure which can be bent, the flexible screen 1 is moved away from the housing 2 or towards the housing 2 along a surface, and the path of extension of the flexible screen 1 in the first direction D1 forms a projection of the path of extension in which the flattening mechanism 3 within the housing 2 is located during the movement of the flexible screen 1. The positioning mechanism 4 on the flexible screen 1 can be arranged in any area on the flexible screen 1, as long as the arrangement of the positioning mechanism 4 does not affect the display of the flexible screen 1, and the positioning mechanism 4 can be mutually matched with the leveling mechanism 3 in the shell 2 when the flexible screen 1 performs flattening movement or rolling movement. In the prior art, as shown in fig. 1, in the process of flattening the flexible screen, the part of the flexible screen which is just separated from the rolling state is easy to tilt to form an uneven area, because the uneven area on the flexible screen is difficult to attract in the rolling process, and a user manually pulls the flexible screen to easily tear the flexible screen. Thus, in the embodiment of the present application, by the intermesh or attraction of the flattening mechanism 3 provided in the housing 2 and the positioning mechanism 4 provided on the flexible screen 1, a pulling force in the first direction D1 can be provided to the flexible screen 1, so that an uneven area of the flexible screen 1, which occurs near the housing 2 when the flexible screen 1 is stretched out of the housing 2 in a flattening movement or is rolled back into the housing 2, can be pulled back to a fixed plane in which the flexible screen 1 is used as a display, where the pulling force direction may be an arbitrary direction, which is exemplarily indicated as a pulling force in fig. 3 (because the flattening mechanism 4 is located below the positioning mechanism 3, the pulling force direction applied to the positioning mechanism 3 is downward), which is a plane in which the stretching direction D3 of the flexible screen 1 is located. The flattened state described in this paragraph refers to a state in which the flexible screen 1 is extended from the inside of the housing 2 to a limit of extension, and the rolled state refers to a state in which the flexible screen 1 is extended from the limit to be fully retracted into the housing 2.
Referring again to fig. 3, in the flexible display device of the present embodiment, a winding shaft 5 is accommodated in a housing 2, and a flexible screen 1 is attached to the winding shaft 5; the flexible display device comprises a transition zone 6, wherein the transition zone 6 is an area which extends by a winding shaft 5 along the unfolding path of the flexible screen 1 for a distance ranging from 1 cm to 3 cm, and the leveling mechanism 3 is movably connected with the positioning mechanism 4 in the transition zone 6.
In the flexible display device of this embodiment, the leveling mechanism 3 is configured to closely engage or attract the positioning mechanism 4 with respect to the uneven area on the transition area 6 within a distance of 1-3 cm from the winding shaft 5 on the unwinding path, so that the downward pulling force provided by the leveling mechanism 3 can rapidly pull the flexible screen 1 downward when the flexible screen 1 just leaves the winding shaft 5 or immediately retracts the winding shaft 5, and the flexible screen 1 extends or retracts along the fixing plane.
Specifically, when the flexible screen 1 performs a flattening movement, the flexible screen 1 is unwound from the winding shaft 5 and protrudes from the inside of the case 2; when the flexible screen 1 performs a retracting movement, the flexible screen 1 is housed in the housing 2 and wound on the winding shaft 5. The uneven areas on the flexible screen 1 are generally located at a position close to the winding axis 5, and thus the areas of the flexible screen 1 where the uneven areas are liable to occur are transition areas 6. The uneven area is hardly attracted by the winding shaft 5, and because the flexible screen 1 already wound on the winding shaft 5 is more attracted, the user manually pulls the flexible screen 1 more easily to tear the flexible screen 1, and the transition area 6 near the winding shaft 5 is more easily tilted during the flattening process by means of the slow release of the winding shaft 5. The leveling mechanism 3 is located in a three-dimensional space along the first direction D1 where the transition area 6 is located, that is, when the leveling mechanism 3 is located below the uneven area of the transition area 6 when viewed from the first direction D1, where the leveling mechanism 3 and the positioning mechanism 4 may be movably connected in any one or more ways including, but not limited to, a combination of one or more ways including a mechanical connection, a magnetic connection, an electrical connection, or an adhesive connection.
Referring again to fig. 3, in the flexible display device of the present embodiment, the positioning mechanism 4 and the leveling mechanism 3 are attracted to each other in the first direction D1, and the attraction force is magnetic force; the positioning mechanism 4 has a first magnetic part, the leveling mechanism 3 has a second magnetic part, and the polarity of the first magnetic part is opposite to that of the second magnetic part; when the flexible screen 1 performs a flattening movement or a shrinking movement, the second magnetic part attracts the first magnetic part through magnetic force, so that the leveling mechanism 3 and the positioning mechanism 4 are in contact with each other. The magnetic material used for the first magnetic portion and the second magnetic portion may be a magnetic metal material such as iron, nickel, or cobalt.
The flexible display device of this embodiment adopts magnetism coupling mechanism to realize the flattening of flexible screen 1, the downward force that leveling mechanism 3 provided is magnetic force, leveling mechanism 3 and positioning mechanism 4 utilize the downward force to pull flexible screen 1 back to carry out flattening motion or rolling motion on the fixed plane when flexible screen 1 is about to leave coiling shaft 5 or about to retract coiling shaft 5 through the mode of magnetic force attraction, through the mutual attraction between the first magnetic part that sets up on positioning mechanism 4 and the second magnetic part that sets up on leveling mechanism 3, first magnetic part and second magnetic part can mutual location, can also make leveling mechanism 3 attract flexible screen 1 to hug closely leveling mechanism 3 when reducing the friction between flexible screen 1 and the leveling mechanism 3, thereby make the part of flexible screen 1 in transition zone 6 can carry out flattening motion or rolling motion smoothly along the fixed plane, avoid appearing the problem of uneven zone in transition zone 6.
Specifically, in the flexible display device of the present embodiment, only the first magnetic portion and the second magnetic portion contact between the flexible screen 1 and the leveling mechanism 3, and no contact occurs between other portions of the flexible screen 1 for display and the leveling mechanism 3. The first magnetic part and the second magnetic part form a magnetic connecting mechanism together, and the flexible screen 1 is adsorbed on the second magnetic part of the leveling mechanism 3 by utilizing the magnetic connecting mechanism, so that the flexible screen 1 is maintained on a fixed plane during movement, and the flatness of the flexible screen 1 is maintained during the flattening movement or rolling movement. Preferably, the first magnetic part on the positioning mechanism 4 can be designed as a groove-like structure.
Referring to fig. 8, fig. 8 is an implementation manner of the positioning mechanism and the leveling mechanism in the flexible display device of the present embodiment, in which the first magnetic portion is a strip-shaped magnetic attraction layer 7 extending along the unwinding direction D3 or the winding direction D4 of the flexible screen 1, and the magnetic attraction layer 7 is located at least on one side of the flexible screen 1 facing the winding shaft 5; the second magnetic part is a first rotating shaft 8, and the axis of the first rotating shaft 8 is parallel to the axis of the winding shaft 5; in the first direction D1, the projections of the first rotation axis 8 and the magnetic attraction layer 7 overlap each other. Wherein the first direction D1 is represented in the form of circles and dots, which are oriented perpendicular to the paper surface and towards the viewing side.
According to the flexible display device of the embodiment, the magnetic attraction layer 7 and the first rotating shaft 8 attract each other through the magnetic force between the magnetic attraction layer 7 and the first rotating shaft 8, and when the first rotating shaft 8 rotates, the magnetic attraction layer 7 rotates along the rotating surface of the first rotating shaft 8, so that the flexible screen 1 and the leveling mechanism 3 can be mutually positioned through the magnetic attraction layer 7 and the first rotating shaft 8, the flexible screen 1 can be ensured to be not displaced in the axial direction D2 where the axial line of the winding shaft 5 is located while being flattened or rolled along the fixed plane, and the flexible screen 1 is smoothly sent out or retracted. Wherein the second direction D1 is represented in the form of circles and intersecting lines, which direction is perpendicular to the paper surface and away from the viewing side.
Specifically, the magnetic attraction layer 7 is made in a long bar shape, similar to forming a track along the flexible screen 1 for the first rotation shaft 8 to rotate on at least one side of the lower surface of the flexible screen 1, so that the first rotation shaft 8 and the winding shaft 5 have a fixed relative position and can rotate simultaneously when the flexible screen 1 performs a flattening movement or a winding movement, and the magnetic attraction layer 7 moves on the surface of the first rotation shaft 8 with the rotation of the first rotation shaft 8. The first shaft 8 may be a buckyball shaped as a spherical magnet with its own N and S poles.
Referring to fig. 9, fig. 9 is a schematic top view of a flexible display device according to still another embodiment of the present application, that is, one implementation of the positioning mechanism and the leveling mechanism. In the flexible display device of the present embodiment, the magnetic attraction layer 7 has the N-pole magnetic stripe 9 and the S-pole magnetic stripe 10 arranged along the axis direction D2, with a space between the N-pole magnetic stripe 9 and the S-pole magnetic stripe 10; the first rotating shaft 8 has an intermediate shaft 13 extending in the axis direction D2, and N-pole rollers 11 and S-pole rollers 12 arranged at both ends of the intermediate shaft 13; in the first direction D1, the projections of the N pole magnetic stripe 9 and the S pole roller 12 overlap each other, and the projections of the S pole magnetic stripe 10 and the N pole roller 11 overlap each other.
In the flexible display device of the embodiment, the magnetic attraction layer 7 is designed to be provided with two strip-shaped magnetic strips with opposite polarities and intervals, the first rotating shaft 8 is designed to be provided with two magnetic rollers with opposite polarities and intervals, so that the contact area between the leveling mechanism 3 and the flexible screen 1 is reduced, and the problem that the magnetic attraction layer 7 is uneven due to the fact that magnetic force is adhered to the rotating shaft is prevented; the flexible screen 1 can be ensured to smoothly perform flattening movement or rolling movement, meanwhile, the use of magnetic materials is reduced, and the cost is saved. It is also possible to reduce the contact area of the interconnection between the leveling mechanism 3 and the positioning mechanism 4, preventing the magnetic attraction layer 7 from being stuck to the first rotation shaft 8 by magnetic force, which results in the problem of unevenness.
Specifically, the magnetic attraction layer 7 is manufactured into a strip-shaped double-track structure, the first rotating shaft 8 is designed into a dumbbell-shaped structure, when the flexible screen 1 performs flattening movement or rolling movement, the first rotating shaft 8 rotates, the N-pole roller 11 moves along the S-pole magnetic stripe 10, the S-pole roller 12 moves along the N-pole magnetic stripe 9, the contact area between the leveling mechanism 3 and the flexible screen 1 is reduced, and the flexible screen 1 can be stabilized in the axial direction D2 where the axis of the winding shaft 5 is positioned so as not to be displaced while the first rotating shaft 8 rotates by the principle that the N pole and the S pole repel each other.
Referring to fig. 10, fig. 10 is a schematic top view of a flexible display device according to still another embodiment of the present application, that is, another implementation of the positioning mechanism and the leveling mechanism. In the flexible display device of the present embodiment, the magnetic attraction layer 7 has a plurality of magnetic attraction portions 14 arranged at intervals along the unwinding direction D3 or the winding direction D4 of the flexible screen 1, and the intervals between two adjacent magnetic attraction portions 14 are the same.
In the flexible display device of this embodiment, the magnetic attraction portion 14 can provide magnetic attraction, and in the process of performing the flattening motion or the rolling motion on the flexible screen 1, the former magnetic attraction portion 14 attracts the first rotating shaft 8 to rotate forwards, and the latter magnetic attraction portion 14 attracts the first rotating shaft 8 to rotate upwards, so that the flexible screen 1 is delivered out of the housing 2 as smoothly as possible.
Specifically, when the flexible screen 1 performs flattening movement or rolling movement, the magnetic attraction parts 14 which are arranged at intervals always keep the magnetic force between the first rotating shaft 8 and the magnetic attraction parts 14 in the following movement process, when one of the magnetic attraction parts 14 approaches the first rotating shaft 8, the magnetic attraction parts 14 can be pulled by the first rotating shaft 8 to be contacted with the surface of the first rotating shaft 8 due to the magnetic force between the first rotating shaft 8 and the magnetic attraction parts 14, when the first rotating shaft 8 continues to rotate, the magnetic attraction parts 14 can be sent out by the first rotating shaft 8 to be far away from the first rotating shaft 8, at the moment, the magnetic force between the magnetic attraction parts 14 still exists between the magnetic attraction parts 14 and the first rotating shaft 8, but the magnetic force between the magnetic attraction parts 14 and the first rotating shaft 8 is gradually close to the first rotating shaft 8, and the magnetic attraction parts 14 are pulled to the first rotating shaft 8 due to the magnetic force between the magnetic attraction parts 14 and the first rotating shaft 8, at the moment, the magnetic force between the magnetic attraction parts 14 and the magnetic attraction parts 14 is not close to the first rotating shaft 8, and the magnetic force between the magnetic attraction parts 14 is not close to the first rotating shaft 8. The first rotation shaft 8 pushes the flexible screen 1 to perform a flattening movement or a rolling movement by performing a cyclic reciprocal movement with the plurality of magnetic attraction portions 14 as described above. The polarities of the adjacent two magnetic attraction portions 14 are opposite, and a portion without magnetic force between the magnetic attraction portions 14 can provide a repulsive force space between the adjacent two magnetic attraction portions 14. Here, the first rotation shaft 8 may be a ring magnet, a button magnet, a round magnet, or the like.
Referring to fig. 11 and 12, fig. 11 is a schematic top view of a flexible display device according to still another embodiment of the present application, that is, a top view of a positioning mechanism and a leveling mechanism that perform positioning, connection, and leveling by a mechanical connection mechanism; fig. 12 is a schematic top view of a flexible display device according to still another embodiment of the present application, in which the positioning mechanism and the leveling mechanism are positioned, connected, and leveled by a mechanical connection mechanism. In the flexible display device of the present embodiment, the positioning mechanism 4 includes a plurality of positioning grooves 15 arranged in the unwinding direction D3 or the winding direction D4 of the flexible screen 1; the leveling mechanism 3 comprises a second rotating shaft 16, and the axis of the second rotating shaft 16 is parallel to the axis of the winding shaft 5; the second rotating shaft 16 is provided with a plurality of positioning pieces 17, and the positioning pieces 17 are in clamping fit with the positioning grooves 15 in the rotating process of the second rotating shaft 16.
The flexible display device of this embodiment adopts mechanical connection mechanism to realize the flattening of flexible screen 1, realizes keeping flexible screen 1's flattening flexible through the mode of cooperation joint in the motion process is realized to locating piece 17 and positioning groove 15 mutually supporting.
Specifically, in the flexible display device of this embodiment, the positioning members 17 are driven to move by the rotation of the second rotating shaft 16, when the positioning members 17 move to the upper side of the second rotating shaft 16, the positioning members 17 contact with the positioning grooves 15 of the leveling mechanism 3, the second rotating shaft 16 and the winding shaft 5 have fixed relative positions and rotate simultaneously, when the second rotating shaft 16 continues to rotate, the positioning members 17 are inserted into the positioning grooves 15 to realize mutual positioning, and as the second rotating shaft 16 continues to rotate, the positioning members 17 apply a push-pull force along the unfolding direction D3 or the winding direction D4 to the positioning grooves 15, so as to drive the flexible screen 1 to move or wind.
Referring again to fig. 12, in the flexible display device of the present embodiment, the leveling mechanism 3 further includes a fixing shaft 18, the fixing shaft 18 is fixed on a side wall of the housing 2, and the second rotating shaft 16 is sleeved on the fixing shaft 18 and can rotate around the fixing shaft 18; the groove spacing between two adjacent positioning grooves 15 is the same, and the arc length corresponding to the included angle between two adjacent positioning pieces 17 about the fixed shaft 18 is the same; when the positioning member 17 rotates by one arc length, the displacement of the positioning groove 15 in the unwinding direction D3 or the winding direction D4 of the flexible screen 1 includes at least the sum of one groove pitch and one length of the positioning groove 15.
In the flexible display device of this embodiment, the positioning members 17 are disposed on the second rotating shaft 16 at equal intervals, and the positioning grooves 15 are disposed on the positioning mechanism 4 at equal intervals, so that the displacement of each positioning member 17 pushing out the positioning groove 15 outwards or pushing back inwards is the same by using the rotation of the second rotating shaft 16, thereby realizing uniform-speed expansion and contraction of the flexible screen 1.
Specifically, in the flexible display device of the present embodiment, when the plurality of positioning members 17 are arranged on the second rotating shaft 16 at equal intervals, each of the positioning members 17 is displaced by one arc length from the contact of the positioning groove 15 to the movement away from the positioning groove 15 upon the rotation of the second rotating shaft 16 about the fixed shaft 18, it is preferable that the case where two positioning members 17 are inserted in different positioning grooves 15 or the same positioning groove 15 at the same time does not occur, which easily causes the positioning members 17 to be caught in the positioning grooves 15, thereby causing the problem of the flexible screen 1 jamming. The displacement of the positioning groove 15 during the movement of the positioning member 17 by one arc length may be the sum of one groove pitch and one length of the positioning groove 15 or may be a multiple of the sum of the lengths, and the specific displacement amount depends on the length of the positioning groove 15 and the density of the positioning grooves 15 arranged on the positioning mechanism 4.
Referring again to fig. 12, in the flexible display device of the present embodiment, along the axial direction D2 of the winding shaft 5, the thickness of the positioning member 17 is the same as the width of the positioning groove 15, and when the positioning member 17 is engaged with the positioning groove 15, the positioning member 17 is interference fit with the positioning groove 15.
In the flexible display device of this embodiment, the interference fit between the positioning member 17 and the positioning groove 15 provides resistance that can prevent the flexible screen 1 from retracting or extending excessively.
Specifically, in the flexible display device of the present embodiment, when the positioning member 17 is inserted into the positioning groove 15, if the thickness of the positioning member 17 is smaller than the width of the positioning groove 15, the positioning member 17 is easily displaced relative to the positioning groove 15 in the axial direction D2 of the winding shaft 5, and this displacement is highly likely to cause the flexible screen 1 to be displaced in the axial direction D2. This not only affects the user's experience when using the flexible screen 1, but also makes it easy that the positioning member 17 frequently receives a potential safety hazard that the positioning member 17 is damaged or broken due to a shearing force in the axial direction D2 when the flexible screen 1 is frequently pushed and pulled. Therefore, the thickness of the positioning piece 17 is the same as the width of the positioning groove 15 and in interference fit, so that the flexible screen 1 cannot displace in the axial direction D2, and therefore, shearing force applied to the positioning piece 17 cannot be generated, and the service life and firmness of the positioning piece 17 are guaranteed.
Referring again to fig. 12, in the flexible display device of the present embodiment, the positioning member 17 has teeth 19 protruding away from the axial direction of the second rotation shaft 16, and the length of the teeth 19 in the circumferential direction of the second rotation shaft 16 is smaller than the length of the positioning groove 15 in the unwinding direction D3 or winding direction D4 of the flexible screen 1.
In the flexible display device of this embodiment, the positioning member 17 is thinner relative to the positioning groove 15 in the unwinding direction D3 or the winding direction D4, so that the rotation of the rotating wheel and the pulling of the positioning groove 15 by the positioning member 17 can be facilitated.
Specifically, in the flexible display device of the present embodiment, since the positioning member 17 needs to exert a push-pull force on the positioning groove 15 during rotation, the structure of the teeth 19 of the positioning member 17 having a length smaller than that of the positioning groove 15 in the unwinding direction D3 or the winding direction D4 can better exert a push-pull force on the positioning groove 15 when entering the positioning groove 15 with a smaller size, and at the same time, can also utilize the function of the positioning member 17 having the same thickness as that of the positioning groove 15 in the axial direction D2 and being interference fit, so that the positioning member 17 can push the positioning groove 15 to perform a telescopic movement and can be fixed in the positioning groove 15, and further, the flexible screen 1 can be positioned and does not displace in the axial direction D2 when performing a flattening movement or a winding movement.
Referring to fig. 11 and 12, in the flexible display device of the present embodiment, in the axial direction D2 of the winding shaft 5, the positioning mechanism 4 is provided at least on the side of the flexible screen 1 facing the winding shaft 5; in the first direction D1, the projections of the positioning mechanism 4 and the leveling mechanism 3 overlap each other.
In the flexible display device of this embodiment, the positioning mechanism 4 is located on at least one side of the flexible screen 1, so as to realize flat extension or retraction of the flexible screen 1 in the housing 2.
In particular, the positioning mechanism 4 may be arranged on one side of the flexible screen 1, or on the other side of the flexible screen 1. Of course, in order that the flexible screen 1 can be subjected to the same forces on both sides in the axial direction D2 when performing the telescopic movement, the positioning mechanism 4 is preferably arranged on both sides of the flexible screen 1.
Referring to fig. 13, fig. 13 is a schematic side view of a flexible display device according to still another embodiment of the present application, that is, a schematic view of a positioning mechanism disposed on a backlight surface of a flexible screen. In the flexible display device of the present embodiment, in the first direction D1, the flexible screen 1 has a display surface 20 for display and a backlight surface 21 opposite to the display surface 20, and the positioning mechanism 4 is disposed on the backlight surface 21.
In the flexible display device of this embodiment, the positioning mechanism 4 is located on at least one side of the backlight surface 21 below the display portion, so as to realize the flat extension or retraction of the flexible screen 1 in the housing 2.
Specifically, in the flexible display device of the present embodiment, one of the two surfaces of the flexible screen 1 is used as the display surface 20 and one of the two surfaces is used as the backlight surface 21, so that the function of full-screen display can be realized, and at this time, the positioning mechanism 4 is arranged on the backlight surface 21, so that the full-screen display of the flexible screen 1 can be realized without affecting the display area of the flexible screen 1, and the use experience of the user is improved.
In the flexible display device of the present embodiment, the positioning mechanism 4 and the leveling mechanism 3 may use a combination of a magnetic connection mechanism and a mechanical connection mechanism, that is, on the basis of the mechanical connection mechanism of fig. 11 and 12, a magnetic material is added to the second rotating shaft 16 of fig. 11 and 12 and combined with the three implementations of the first rotating shaft 8 of fig. 8 to 10, and a magnetic material is added to the positioning groove 15 of fig. 11 and 12 and combined with the three implementations of the magnetic attraction layer 7 of fig. 8 to 10, so that the positioning mechanism 4 and the leveling mechanism 3 can be attracted together by the magnetic connection mechanism while being positioned and engaged by the mechanical connection mechanism, and further, the flexible screen 1 can stretch smoothly on a fixed plane in the unwinding direction D3 or the winding direction D4 without displacement in the axis direction D2 when performing the flattening movement or the winding movement.
According to the flexible display device disclosed by the embodiment of the application, the flexible screen can move in the winding and flattening process and can not warp in the area close to the winding shaft, so that the flexible screen can be kept flat all the time in the winding and flattening process, the display function of the flexible screen can not be influenced, the touch problem of a user in use is eliminated, and the use experience of the user is enhanced.
The foregoing description of the preferred embodiments of the application is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the application.
Claims (3)
1. A flexible display device, comprising a flexible screen and a housing, at least part of the flexible screen being received in the housing, the housing containing a levelling mechanism;
when the flexible screen performs flattening movement, the flexible screen stretches out of the shell and expands; when the flexible screen performs rolling motion, the flexible screen is further contained in the shell;
the flexible screen is provided with a positioning mechanism extending along the unfolding direction of the flexible screen;
in the process of carrying out the flattening movement or the rolling movement on the flexible screen, the positioning mechanism and the leveling mechanism relatively displace on an extending path of the positioning mechanism and attract in a first direction, and the first direction is perpendicular to a plane where the flexible screen is in a flattened state;
the winding shaft is arranged in the shell, and the flexible screen is connected to the winding shaft;
the positioning mechanism and the leveling mechanism are mutually attracted in the first direction, and the attractive force is magnetic force; the positioning mechanism is provided with a first magnetic part, the leveling mechanism is provided with a second magnetic part, and the polarity of the first magnetic part is opposite to that of the second magnetic part; when the flexible screen performs the flattening movement or the rolling movement, the second magnetic part attracts the first magnetic part through magnetic force, so that the flattening mechanism and the positioning mechanism are in contact with each other;
the first magnetic part is a strip-shaped magnetic attraction layer extending along the unfolding direction or the rolling direction of the flexible screen, and the magnetic attraction layer is at least positioned on one side of the flexible screen, which faces the winding shaft;
the second magnetic part is a first rotating shaft, and the axis of the first rotating shaft is parallel to the axis of the winding shaft;
in the first direction, the first rotation axis and the projection of the magnetic attraction layer overlap each other;
the magnetic attraction layer is provided with an N-pole magnetic strip and an S-pole magnetic strip which are arranged along the axial direction, and a space is reserved between the N-pole magnetic strip and the S-pole magnetic strip;
the first rotating shaft is provided with an intermediate shaft extending along the axis direction, and N-pole idler wheels and S-pole idler wheels which are arranged at two ends of the intermediate shaft;
in the first direction, the projections of the N pole magnetic stripe and the S pole roller overlap each other, and the projections of the S pole magnetic stripe and the N pole roller overlap each other.
2. A flexible display device as defined in claim 1, wherein,
the flexible display device comprises a transition area, the transition area is an area which is formed by extending the winding shaft along the flexible screen unfolding path within a distance range of 1-3 cm, and the leveling mechanism is movably connected with the positioning mechanism in the transition area.
3. The flexible display device of claim 1, wherein in the first direction, the flexible screen has a display surface for display and a backlight surface opposite the display surface, the positioning mechanism being disposed on the backlight surface.
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| CN202111151706.4A CN113870710B (en) | 2021-09-29 | 2021-09-29 | Flexible display device |
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| CN202111151706.4A CN113870710B (en) | 2021-09-29 | 2021-09-29 | Flexible display device |
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| CN114783284B (en) * | 2022-03-28 | 2024-02-20 | 合肥维信诺科技有限公司 | Flexible display device and electronic equipment |
| CN115571056B (en) * | 2022-09-27 | 2024-11-12 | 京东方科技集团股份有限公司 | Slide display device and automobile |
| CN115691338B (en) * | 2022-11-10 | 2024-09-03 | 业成光电（深圳）有限公司 | Display panel and display device |
| CN116129748A (en) * | 2023-01-30 | 2023-05-16 | 京东方科技集团股份有限公司 | Slide-roll device and display device |
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