CN113205748B - Display device - Google Patents
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- CN113205748B CN113205748B CN202110486040.1A CN202110486040A CN113205748B CN 113205748 B CN113205748 B CN 113205748B CN 202110486040 A CN202110486040 A CN 202110486040A CN 113205748 B CN113205748 B CN 113205748B
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- pintle
- rotating shaft
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- 239000004973 liquid crystal related substance Substances 0.000 description 1
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
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Abstract
The invention provides a display device, wherein a pintle, a damping block and a connecting unit form a net-like rotating shaft device, the net-like rotating shaft device deforms in the bending process of a display panel, and firstly, a plane formed by the net-like rotating shaft device can ensure that the bending surface of the display panel is flat in the unfolding or bending process of the display device; and, the reticular pivot mechanism of class compares among the prior art mechanical structure who is used for buckling, and the stress that the deformation in-process can very big degree release display panel expand or buckle in-process and produce, and then improve display panel's life.
Description
Technical Field
The invention relates to the technical field of display panels, in particular to a display device.
Background
Organic Light-Emitting diodes (OLEDs), also known as Organic electroluminescent displays and Organic Light-Emitting semiconductors, have the advantages of self-luminescence, wide viewing angle, high contrast, low power consumption, fast response speed, and the like, and are widely used in the display fields of mobile phones, digital video cameras, DVD players, notebook computers, televisions, and the like.
Compared with a conventional Liquid Crystal Display (LCD), the OLED Display panel can realize flexible Display, so that a highly portable and bendable Display technology becomes a significant breakthrough in the field.
At present, most of the existing flexible display devices implement the bending of the flexible display device through a mechanical structure, and the mechanical structure usually performs bending rotation around a specific rotation axis.
Therefore, the stress generated in the bending process of the conventional flexible display device cannot be effectively released or buffered through the mechanical structure, and the flexible display device is very easy to crack, so that the service life of the flexible display device is shortened.
Disclosure of Invention
In view of the above, in order to solve the above problems, the present invention provides a display device, which has the following technical solutions:
a display device, the display device comprising:
a display panel, the display panel comprising: the display panel comprises a first surface and a second surface which are oppositely arranged, wherein the first surface is a display surface of the display panel;
the pivot means, the pivot means sets up the second surface deviates from one side of first surface, the pivot means includes:
a plurality of pins extending in a first direction and arranged in a direction crossing the first direction;
the damping device comprises a plurality of damping blocks, a plurality of elastic pieces and a plurality of elastic pieces, wherein the plurality of damping blocks are arranged on at least one pintle, and a gap is formed between every two adjacent damping blocks on the pintle;
and the connecting units are used for connecting two adjacent damping blocks on two adjacent pintle.
Compared with the prior art, the invention has the following beneficial effects:
the invention provides a display device middle axis needle, a damping block and a connecting unit, which form a net-like rotating shaft device, wherein the net-like rotating shaft device deforms in the bending process of a display panel; and, the reticular pivot mechanism of class compares among the prior art mechanical structure who is used for buckling, and the stress that the deformation in-process can very big degree release display panel expand or buckle in-process and produce, and then improve display panel's life.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a diagram illustrating a prior art mechanical structure for bending a display panel;
fig. 2 is a schematic structural diagram of a display device according to an embodiment of the present invention;
fig. 3 is a schematic view illustrating a bending state of a display panel according to an embodiment of the invention;
fig. 4 is a schematic view illustrating a bending state of another display panel according to an embodiment of the invention;
fig. 5 is a schematic structural diagram of a rotating shaft device according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of another display device according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of another display device according to an embodiment of the invention;
fig. 8 is a schematic structural diagram of another spindle device according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of another spindle device according to an embodiment of the present invention;
fig. 10 is a partial schematic view of a spindle device according to an embodiment of the present invention;
fig. 11 is a schematic cross-sectional view of a sliding groove according to an embodiment of the present invention;
fig. 12 is a schematic structural diagram of another spindle device according to an embodiment of the present invention;
fig. 13 is a schematic structural diagram of another spindle device according to an embodiment of the present invention;
fig. 14 is a schematic view of an angle formed by two connecting units on the same damping block when the display device provided by the embodiment of the invention is in a completely bent state;
fig. 15 is a schematic structural diagram of another spindle device according to an embodiment of the present invention;
FIG. 16 is a partial schematic view of another spindle assembly according to an embodiment of the present invention;
fig. 17 is a schematic structural diagram of another display device according to an embodiment of the invention;
fig. 18 is a schematic structural diagram of another display device according to an embodiment of the invention;
fig. 19 is a schematic structural diagram of another spindle device according to an embodiment of the present invention;
FIG. 20 is a partial schematic view of another spindle assembly according to an embodiment of the present invention;
fig. 21 is a schematic structural diagram of another display panel according to an embodiment of the invention;
fig. 22 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
fig. 23 is a schematic structural diagram of another display panel according to an embodiment of the invention;
fig. 24 is a schematic view illustrating a bending state of another display device according to an embodiment of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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.
Referring to fig. 1, fig. 1 is a schematic diagram of a prior art mechanical structure for bending a display panel.
In the inventive process of the present invention, as shown in fig. 1, the inventor finds that the conventional mechanical structure for implementing the bending of the display panel mainly includes: a plurality of transmission members 12 disposed on the base plate 11.
The transmission member 12 includes a rotation shaft 13 and transmission plates 14 disposed at both sides of the rotation shaft 13.
During the bending process of the display panel, the two rotating plates 14 perform bending rotation around the rotating shaft 13.
Then, during the bending process of the display device, the stress generated by the bending of the display device cannot be effectively released or buffered through the mechanical structure; after many times of bending, the display device is very prone to crack, thereby reducing the service life of the display device.
Based on the above, the invention provides a display device, wherein the pintle, the damping block and the connecting unit in the display panel form a net-like rotating shaft device, and the net-like rotating shaft device deforms in the bending process of the display panel; and, the reticular pivot mechanism of class compares among the prior art mechanical structure who is used for buckling, and the stress that the deformation in-process can very big degree release display panel expand or buckle in-process and produce, and then improve display panel's life.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a display device according to an embodiment of the present invention.
The display device includes:
a display panel 21, the display panel 21 comprising: the first surface 22 and the second surface 23 are oppositely arranged, and the first surface 22 is a display surface of the display panel 21.
And the rotating shaft device 24 is arranged on the side, away from the first surface 22, of the second surface 23.
The display surface (i.e., the first surface 22) of the display panel 21 is also generally referred to as the front surface of the display panel 21, and the second surface 23 of the display panel 21 passes through the back surface of the display panel 21.
The hinge device 24 is disposed on a side of the second surface 23 facing away from the first surface 22 for folding the display panel 21 inward or outward.
Specifically, referring to fig. 3, fig. 3 is a schematic view illustrating a bending state of a display panel according to an embodiment of the present invention; the inward folding of the display panel 21 means that the first surface 22 faces outward when the display panel 21 is in the completely folded state.
Referring to fig. 4, fig. 4 is a schematic view illustrating a bending state of another display panel according to an embodiment of the invention; the outward folding of the display panel 21 means that the second surface 23 faces outward when the display panel 21 is in the completely folded state.
In the embodiment of the present invention, the display panel 21 is folded inward as an example.
It should be further noted that, as shown in fig. 2, the display panel 21 has at least one bending region 20, the number of the bending regions 20 is the same as the number of the hinge devices 24, and one bending region 20 corresponds to one hinge device 24.
In the embodiment of the present invention, the display panel 21 has a bending region 20 and a rotating shaft device 24.
Referring to fig. 5, fig. 5 is a schematic structural diagram of a rotating shaft device according to an embodiment of the present invention.
The spindle device 24 includes:
and a plurality of pins 25, the pins 25 extending in a first direction X and being arranged in a second direction Y, the second direction Y intersecting the first direction X.
A plurality of damping blocks 26 are arranged on at least one pintle 25, and a space is arranged between two adjacent damping blocks 26 on the pintle 25.
And a plurality of connecting units 27, wherein the connecting units 27 are used for connecting two adjacent damping blocks 26 on two adjacent pins 25.
It should be noted that, the spacing distances between two adjacent damping blocks 26 on the pintle 25 may be equal or unequal, and the embodiment of the present invention is not limited thereto, and the explanation is given by taking the example that the spacing distances are equal.
In fig. 5, the arrangement of the pins 25 in a direction perpendicular to the first direction X is described as an example, that is, the second direction Y is perpendicular to the first direction X, and the first direction X and the second direction Y are directions of the display device in the extended state.
In this embodiment, referring to fig. 6, fig. 6 is a schematic structural diagram of another display device according to an embodiment of the present invention, in which the display panel 21 includes a display area 28 and a frame area 29 surrounding the display area 28, where the display panel 21 has at least one bending area 20 (taking one bending area 20 as an example for illustration), and the bending area 20 extends from one frame area 29 of the display area 28 to the frame area 29 on the opposite side in the third direction Z; wherein the first direction X and the third direction Z are parallel.
As shown in fig. 5, the pintle 25, the damping block 26 and the connecting unit 27 form a net-like rotating shaft device 24, and the net-like rotating shaft device 24 deforms during the unfolding or folding process of the display panel.
Firstly, the plane formed by the reticular rotating shaft device 24 can ensure that the bending surface of the display panel is flat in the unfolding or bending process of the display device; the deformation of the display panel caused by overlarge local stress is avoided, and the service life of the display device can be further prolonged.
It should be noted that, in the embodiment of the present invention, the bending surface of the display panel 21 refers to a corresponding contact surface between the display panel 21 and the rotation shaft device 24.
Furthermore, compared with the mechanical structure for bending in the prior art, the mesh-like rotating shaft device 24 can release the stress generated in the process of unfolding or bending the display panel to a great extent in the deformation process, thereby prolonging the service life of the display device.
Furthermore, based on the mesh-like rotating shaft device 24, the stretching of the display device in the second direction Y can also be realized.
It should be noted that fig. 2 to 4 only illustrate the structure of the display device in the bending region 20, and the structures of other regions are not illustrated in fig. 2 to 4.
Optionally, in another embodiment of the present invention, referring to fig. 7, fig. 7 is a schematic structural diagram of another display device provided in the embodiment of the present invention.
The display device further includes:
a first protection layer 30, wherein the first protection layer 30 is at least located between the rotating shaft device 24 and the display panel 21.
In this embodiment, the pins 25 are fixed on the first protection layer 30 for further ensuring that the rotating shaft device 24 is always located on a plane during the unfolding or bending process of the display panel 21, even if the bending surface of the display panel 21 is flat, the deformation of the display panel caused by excessive local stress is avoided, and the service life of the display device can be further prolonged.
Fig. 7 is intended to show only the structure of the display device in the bend region 20, and the structure of the other regions is not shown in fig. 7.
Optionally, in another embodiment of the present invention, the first protection layer 30 is a protection layer made of a polymer material or an elastic protection layer made of a metal material.
In this embodiment, when the first protection layer 30 is a protection layer made of a polymer material, the first protection layer 30 includes, but is not limited to, a silicone protection layer or a styrene-based thermoplastic elastic protection layer.
When the first passivation layer 30 is an elastic passivation layer made of a metal material, the first passivation layer 30 includes, but is not limited to, a spring steel passivation layer.
The first protection layer 30 can further release the stress generated during the unfolding or folding process of the display panel during the folding process of the display device, thereby prolonging the service life of the display panel.
Optionally, in another embodiment of the present invention, referring to fig. 8, fig. 8 is a schematic structural diagram of another rotating shaft device provided in the embodiment of the present invention.
The damping mass 26 is slidably connected to the pintle 25.
In this embodiment, first, the covering area of the web-like rotation shaft device 24 is defined at least by the friction force between the damping block 26 and the pintle 25, so that the web-like rotation shaft device 24 covers the bending area of the display panel 21.
In the unfolding or bending process of the display panel, namely under the driving of an external force, the distance between two adjacent damping blocks 26 on the pintle 25 is changed, so that the deformation of the net-like rotating shaft device 24 is realized, and the bending of the display device is realized; i.e. the distance L1 between two adjacent damping masses 26 on the pintle 25 varies.
Furthermore, the stress generated during the unfolding or bending process of the display panel can be released to a great extent during the deformation process of the mesh-like rotating shaft device 24, so that the service life of the display panel is further prolonged.
Optionally, in the embodiment of the present invention, referring to fig. 9, fig. 9 is a schematic structural diagram of another rotating shaft device provided in the embodiment of the present invention.
The material of the connecting unit 27 is flexible material; the damping mass 26 is fixedly connected to the needle 25.
In this embodiment, the damping block 26 is fixedly connected to the pintle 25, and the layout of the damping block 26 on the pintle 25 can define the coverage area of the web-like rotation axis device 24, so that the web-like rotation axis device 24 covers the bending area of the display panel.
In the unfolding or bending process of the display panel, namely under the driving of an external force, the distance between two adjacent damping blocks 26 on the pintle 25 is unchanged, and the connection unit 27 realizes the deformation of the net-like rotating shaft device 24 through elastic deformation so as to realize the bending of the display device; that is, the distance L1 between two adjacent damping blocks 26 on the pintle 25 is not changed, and the length L2 of the connecting unit 27 is changed.
Furthermore, the stress generated during the unfolding or bending process of the display panel can be released to a great extent during the deformation process of the mesh-like rotating shaft device 24, so that the service life of the display panel is further prolonged.
Optionally, in another embodiment of the present invention, referring to fig. 10, fig. 10 is a partial schematic view of a rotating shaft device according to an embodiment of the present invention.
Referring to fig. 11, fig. 11 is a schematic cross-sectional view of a sliding groove according to an embodiment of the present invention.
The damping block 26 has a slide groove 31 on a side facing the pintle 25, and a longitudinal direction of the slide groove 31 intersects with the first direction.
The rotating shaft device further comprises:
and at least one sliding component 32 is arranged in the sliding groove 31 of the sliding component 32, and the sliding component 32 is connected with the connecting unit 27.
Note that, in fig. 10, β represents a rotatable range of the link unit 27.
In this embodiment, the damping block 26 is provided with the sliding groove 31, and the damping block 26 is connected with the connecting unit 27 by combining the sliding member 32 disposed in the sliding groove 31, so that the connecting unit 27 rotates based on the sliding groove 31 during the unfolding or folding process of the display device, thereby further improving the deformation degree of the web-like rotating shaft device, and not playing a role of hindrance during the unfolding or folding process of the display device.
Optionally, the connection between the sliding member 32 and the connecting member 27 includes, but is not limited to, riveting, screwing, snapping, or bonding.
Optionally, in another embodiment of the present invention, as shown in fig. 11:
the cross section of the sliding groove 31 is convex; wherein the cross section is a plane perpendicular to the first direction and passing through the sliding groove 31.
In this embodiment, the slide groove 31 has an inner slide groove 33 and an outer slide groove 34; wherein the opening size of the inner slide groove 33 is larger than the opening size of the outer slide groove 34.
Based on the structure of the sliding groove 31, a part of the sliding member 32 is located in the inner sliding groove 33, another part is located in the outer sliding groove 34, and the connection unit 27 is engaged with the sliding member 32 located in the outer sliding groove 34.
The sliding member 32 located in the inner sliding groove 33 is also used to prevent the sliding member 32 from being separated from the sliding groove 31 on the premise that the sliding member can slide, thereby improving the structural stability of the rotating shaft device.
Optionally, in another embodiment of the present invention, referring to fig. 12, fig. 12 is a schematic structural diagram of another rotating shaft device provided in the embodiment of the present invention.
In the second direction Y, there is a space between orthographic projections of the damping masses 26 on two adjacent pins 25, i.e., L3 > 0.
In this embodiment, when the display device is in the unfolded state, the second direction Y is the arrangement direction of the pins 25, and in the second direction Y, orthographic projections of the damping blocks 26 on two adjacent pins 25 do not overlap.
By arranging the damping blocks 26 on the pintle 25 in a staggered manner as much as possible, for example, the movable range between the damping blocks 26 can be increased, and the deformation degree of the mesh-like rotating shaft device 24 can be increased, so that the mesh-like rotating shaft device does not have a blocking effect in the unfolding or folding process of the display device.
Optionally, in another embodiment of the present invention, referring to fig. 13, fig. 13 is a schematic structural diagram of another rotating shaft device provided in the embodiment of the present invention.
Based on the arrangement of the damping masses 26 shown in fig. 13, when the number of the pins 25 is odd, the following relationship exists:
n1＝[360°/(180°-θ)]+1；n2＝[360°/(180°-θ)]；
wherein θ is an angle formed by two connecting units 27 on the same damping block 26 when the display device is in a completely bent state; referring to fig. 14, fig. 14 is a schematic view illustrating an angle formed by two connecting units on the same damping block when the display device provided by the embodiment of the present invention is in a completely bent state.
n1The number of the damping blocks 26 arranged in the second direction Y and located on the odd number of rows of pins 25, i.e. the number of the damping blocks 26 located in the position M1, is shown in the flat state.
n2The number of damping blocks 26 arranged in the second direction Y and located on the even number of rows of pins 25, i.e. the number of damping blocks 26 located in the position M2, is shown in the flat state of the device.
That is, when the number of the pins 25 is odd, the display device is in a flat state, and the number of the damping blocks 26 arranged in the second direction Y on the pins 25 in the odd number rows is one more than the number of the damping blocks 26 arranged in the pins 25 in the even number rows.
Optionally, referring to fig. 15, fig. 15 is a schematic structural diagram of another rotating shaft device according to an embodiment of the present invention.
Based on the arrangement of the damping blocks 26 shown in fig. 15, when the number of the pins 25 is even, the following relationship exists:
n3＝n4＝[360°/(180°-θ)]；
as shown in fig. 14, θ is an angle formed by two connecting units 27 on the same damping block 26 when the display device is in the completely bent state.
n3The number of the damping blocks 26 arranged in the second direction Y and located on the odd number of rows of pins 25, i.e. the number of the damping blocks 26 located in the position M3, is shown in the flat state.
n4The number of damping blocks 26 arranged in the second direction Y and located on the even number of rows of pins 25, i.e. the number of damping blocks 26 located in the position M4, is shown in the flat state of the device.
That is, when the number of the pins 25 is an even number, the display device is in a flat state, and is arranged in the second direction Y, and the number of the damping blocks 26 on the odd-numbered columns of the pins 25 is the same as the number of the damping blocks 26 on the even-numbered columns of the pins 25.
Optionally, in another embodiment of the present invention, referring to fig. 16, fig. 16 is a partial schematic view of another rotating shaft device provided in an embodiment of the present invention.
The pivot mechanism still includes:
the limiting structure 35 is fixedly arranged on the pintle 25; limit structure 35 includes: a first limit unit 36 and a second limit unit 37.
Along the first direction X, the first limit unit 36 and the second limit unit 37 are respectively disposed at both sides of the at least one damping block 26.
In this embodiment, when the damping block 26 is slidably connected to the pintle 25, two limiting units, namely, the first limiting unit 36 and the second limiting unit 37, are respectively disposed on two sides of at least one damping block 26 in the first direction X, so as to limit the moving area of the damping block 26, and after the damping block 26 is flattened or bent for multiple times, the damping block 26 does not deviate from the initial position in too many positions, so that the coverage area of the mesh-like rotating shaft device does not completely cover the bending area of the display panel, that is, in the case of allowing the damping block 26 to slide, the layout of the mesh-like rotating shaft device is limited, and the bending stability of the display device is improved.
Optionally, in another embodiment of the present invention, in order to ensure that the limiting structure 35 does not affect the movement of the damping block 26 during the process of flattening or bending the display device, the following steps are set: the maximum distance between the first limiting unit 36 and the second limiting unit 37 is 2.7H/n;
where H is the sum of the distance between the first surface 22 and the spindle means 24 and the thickness of the spindle means 24;
n is the number of damping blocks 26 arranged in the second direction Y and located on the even column pins 25 when the display device is in the flat state.
In this embodiment, referring to fig. 17, fig. 17 is a schematic structural diagram of another display device according to an embodiment of the present invention; setting: the width of the bending region 20 of the display device in a completely flat state is L; it is evident that L > π H is present.
Referring to fig. 18, fig. 18 is a schematic structural diagram of another display device according to an embodiment of the present invention; setting: the arc length of the bending region of the display device in the fully bent state is L'.
It should be noted that fig. 17 to 18 only illustrate the structure of the display device in the bending region 20, and the structures of other regions are not illustrated in fig. 17 to 18.
Referring to fig. 19, fig. 19 is a schematic structural diagram of another spindle device according to an embodiment of the present invention; setting: the display device has a spacing x between adjacent pins 25 in a fully flat state; half of the distance between two adjacent damping masses 26 on one pintle 25 of the display device in the fully flattened state is k.
Setting: the display device has a spacing x' between adjacent pins 25 in the fully bent state; half of the distance between two adjacent damping blocks 26 on one pintle 25 of the display device in the fully collapsed state is k'.
There are obviously: l '═ L + pi H ═ 2 × n × x'.
The movable range of the damping block is as follows:
further, in the above-mentioned case,
further, in the above-mentioned case,
in a further aspect of the present invention,
further, in the above-mentioned case,
optionally, in another embodiment of the present invention, referring to fig. 20, fig. 20 is a partial schematic view of another spindle device provided in an embodiment of the present invention.
In the direction perpendicular to the plane of the display panel, the heights of the first limiting unit 36 and the second limiting unit 37 are the same, i.e., h1 is h2, and are greater than the height of the damper 26, i.e., h1 is h2 > h 3.
In this embodiment, the heights of the first limiting unit 36 and the second limiting unit 37 are greater than the height of the damping block 26, so that the damping block 26 is not in contact with the first protective layer, and the sliding effect of the damping block 26 on the pintle 25 is further improved, so as to improve the flattening or bending effect of the display device.
Furthermore, by setting the heights of the first limiting unit 36 and the second limiting unit 37 to be the same, the first limiting unit 36 and the second limiting unit 37 can also play a supporting role after contacting with the first protective layer, so as to prevent the damping block 26 from scratching the second surface of the display panel during the unfolding or bending process of the display device, and ensure that the bending surface of the display panel is flat during the unfolding or bending process of the display device; the deformation of the display panel caused by overlarge local stress is avoided, and the service life of the display device can be further prolonged.
Optionally, in another embodiment of the present invention, referring to fig. 21, fig. 21 is a schematic structural diagram of another display panel provided in the embodiment of the present invention; referring to fig. 22, fig. 22 is a schematic structural diagram of another display panel according to an embodiment of the present invention.
The display device further includes: a first support frame 38 and a second support frame 39.
The first supporting frame 38 and the second supporting frame 39 are located on the same side of the display panel 21 as the rotating shaft device 24, and the first supporting frame 38 and the second supporting frame 39 are respectively located on two opposite sides of the rotating shaft device 24 along the arrangement direction of the pins 25; the first pintle 25 adjacent the first support frame 38 is secured to the first support frame 38; the first pintle 25 adjacent the second support frame 39 is secured to the second support frame 39.
In this embodiment, the first and second support frames 38 and 39 are used firstly to support the non-bent region of the display panel and secondly to fix the respective adjacent first pins 25.
The pintle 25 is fixed by the first supporting frame 38, the second supporting frame 39 and the first protecting layer 30, so as to further ensure that the rotating shaft device 24 is always located on a plane in the unfolding or bending process of the display panel 21, even if the bending surface of the display panel is flat, the deformation of the display panel caused by the overlarge local stress is avoided, and further, the service life of the display device can be prolonged, and the bending effect of the display panel 21 is improved.
Optionally, in another embodiment of the present invention, as shown in fig. 22:
the first protection layer 30 also extends between the first support frame 38 and the display panel 21, and between the second support frame 39 and the display panel 21.
By increasing the coverage area of the first protection layer 30, firstly, the flatness of the second surface 23 of the display panel 21 can be improved, and secondly, the stress generated in the process of unfolding or bending the display panel 21 can be buffered to the non-display area (i.e., the frame area) of the display panel 21 as much as possible by the first protection layer 30, so that the service life of the display panel 21 can be prolonged.
In fig. 22, the protective layer structure in which the first protective layer 30 is a single surface is described as an example, but a plurality of independent protective layer structures may be used, for example, three independent protective layer structures are used as the protective layer between the first support frame 38 and the display panel 21, the protective layer between the second support frame 39 and the display panel 21, and the protective layer between the hinge device 24 and the display panel 21.
When the protective layer between the first supporting frame 38 and the display panel 21, the protective layer between the second supporting frame 39 and the display panel 21, and the protective layer between the rotating shaft device 24 and the display panel 21 are three independent protective layer structures, the process material of each protective layer may be different, in some alternative embodiments, the protective layer between the rotating shaft device 24 and the display panel may be a flexible material, and the protective layer between the first supporting frame 38 and the display panel 21 and the protective layer between the second supporting frame 39 and the display panel 21 may be a rigid material. So set up on the one hand can realize the bending of display panel 21, can support display panel better simultaneously.
Optionally, in another embodiment of the present invention, referring to fig. 23, fig. 23 is a schematic structural diagram of another display panel provided in the embodiment of the present invention.
The display device further includes: and the support layer 40 is arranged on one side of the rotating shaft device 24, which faces away from the display panel 21.
In this embodiment, the supporting layer 40 and the first protection layer 30 encapsulate the rotating shaft device 24, so that the rotating shaft device 24 can be further ensured to be always on a plane during the unfolding or bending process of the display panel 21, even if the bending surface of the display panel 21 is flat, the deformation of the display panel 21 caused by excessive local stress is avoided, and thus the service life of the display device can be prolonged, and the bending effect of the display panel 21 can be improved.
Specifically, as shown in fig. 23, the supporting layer 40 further extends to a side of the first supporting frame 38 facing away from the display panel 21, and extends to a side of the second supporting frame 39 facing away from the display panel 21, so as to improve the flatness of the entire display device.
As shown in fig. 23, a schematic view of the positional relationship of the respective structures of the display device in a flat state is shown.
Further, referring to fig. 24, fig. 24 is a schematic diagram of a bending state of another display device according to an embodiment of the present invention, which illustrates a schematic diagram of a positional relationship between structures of the display device in a bending state.
Optionally, in another embodiment of the present invention, in order to implement the electric bending of the display device, a piezoelectric material is used as the material of the support layer 40, that is, the material of the support layer 40 is a piezoelectric material.
That is, under the action of the external electric field, the supporting layer 40 made of the piezoelectric material deforms, and then drives the display panel to bend, so as to realize electric bending of the display device.
In this embodiment, the piezoelectric material includes, but is not limited to, piezoelectric ceramic, or a mixture of polyvinylidene fluoride films, etc.
The display device provided by the present invention is described in detail above, and the principle and the implementation of the present invention are explained in the present document by applying specific examples, and the above description of the examples is only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
It should be noted that, in the present specification, the embodiments are all described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include or include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (12)
1. A display device, characterized in that the display device comprises:
a display panel, the display panel comprising: the display panel comprises a first surface and a second surface which are oppositely arranged, wherein the first surface is a display surface of the display panel;
the pivot means, the pivot means sets up the second surface deviates from one side of first surface, the pivot means includes:
a plurality of pintle extending in a first direction and arranged in a second direction, the second direction intersecting the first direction;
the plurality of damping blocks are arranged on at least one pintle, and an interval is formed between every two adjacent damping blocks on the pintle;
the connecting units are used for connecting two adjacent damping blocks on two adjacent pintle;
one side of the damping block facing the pintle is provided with a sliding groove, and the length direction of the sliding groove is crossed with the first direction;
the rotating shaft device further comprises:
the sliding component is arranged in the sliding groove and is connected with the connecting unit;
the damping block is connected with the pintle in a sliding mode, or the connecting unit is made of flexible materials and fixedly connected with the pintle.
2. The display device according to claim 1, further comprising:
a first protective layer at least between the hinge mechanism and the display panel.
3. The display device according to claim 2, wherein the first protective layer is a protective layer made of a polymer material or an elastic protective layer made of a metal material.
4. The display device according to claim 1, wherein a cross-sectional shape of the slide groove is a convex shape;
wherein the cross section is a plane perpendicular to the first direction and passing through the sliding groove.
5. The display device according to claim 1, wherein in the second direction, there is a space between orthographic projections of the damping blocks on two adjacent pins.
6. The display device according to claim 5, wherein when the number of the pins is an odd number,
n1＝[360°/(180°-θ)]+1；n2＝[360°/(180°-θ)]；
the angle theta is an angle formed by two connecting units on the same damping block when the display device is in a completely bent state;
n1the number of the damping blocks which are arranged in the second direction and are positioned on the odd-numbered row of the pins is the number of the damping blocks which are arranged in the second direction when the display device is in a flat state;
n2the number of the damping blocks which are arranged in the second direction and are positioned on the even column pins is the number of the damping blocks which are arranged in the second direction when the display device is in a flat state.
7. The display device according to claim 1, wherein the hinge device further comprises:
the limiting structure is fixedly arranged on the pintle; the limit structure comprises: the device comprises a first limiting unit and a second limiting unit;
along the first direction, the first limiting unit and the second limiting unit are respectively arranged on two sides of at least one damping block.
8. The display device according to claim 7, wherein the maximum distance between the first and second stopper units is 2.7H/n;
wherein H is the sum of the distance between the first surface and the spindle means and the thickness of the spindle means;
n is the number of the damping blocks which are arranged in the second direction and are positioned on the even column pins when the display device is in a flat state.
9. The display device according to claim 7, wherein the first and second position-limiting units have the same height in a direction perpendicular to the plane of the display panel and are greater than the height of the damping block.
10. The display device according to claim 1, further comprising: a first support frame and a second support frame;
the first support frame, the second support frame and the rotating shaft device are positioned on the same side of the display panel, and the first support frame and the second support frame are respectively positioned on two opposite sides of the rotating shaft device along the arrangement direction of the pins;
a first pintle adjacent to the first support frame is fixed on the first support frame;
a first pintle adjacent the second support frame is secured to the second support frame.
11. The display device according to claim 1, further comprising:
and the supporting layer is arranged on one side of the rotating shaft device, which deviates from the display panel.
12. The display device according to claim 11, wherein a material of the support layer is a piezoelectric material.
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