CN112102728B - Support device for foldable display panel and display device - Google Patents
Support device for foldable display panel and display device Download PDFInfo
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- CN112102728B CN112102728B CN202011052002.7A CN202011052002A CN112102728B CN 112102728 B CN112102728 B CN 112102728B CN 202011052002 A CN202011052002 A CN 202011052002A CN 112102728 B CN112102728 B CN 112102728B
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- display panel
- foldable display
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
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Abstract
The embodiment of the invention provides a supporting device of a foldable display panel and a display device, and solves the problems that the foldable display panel is stretched for multiple times in the prior art, the folded display panel stretched for multiple times is easy to lose effectiveness, and normal display cannot be realized. In the supporting device of the foldable display panel provided by the embodiment of the invention, when the foldable display panel is bent, the first supporting plate rotates relative to the rotating shaft and slides relative to the first rotating body in a direction close to the rotating shaft; and/or the second support plate rotates relative to the rotating shaft and slides relative to the second rotating body in the direction close to the rotating shaft; when the foldable display panel is bent, at least one of the first support plate and the second support plate slides towards the direction close to the rotating shaft while rotating, so that the probability that the foldable display panel is stretched in the bending process is reduced, and the probability that the display panel fails due to stretching is reduced.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of display, in particular to a supporting device of a foldable display panel and a display device.
[ background ] A method for producing a semiconductor device
With the development of display technologies, at present, because a foldable display panel has a foldable advantage, terminal products such as mobile phones and tablet computers using the foldable display panel are developing in a foldable direction, but although a foldable display device in the prior art can be folded, when the foldable display panel is being folded, due to limitation of a folding structure, when the foldable display panel is being opened or folded, a length of a supporting device of the whole foldable display panel is changed, so that the foldable display panel is stretched or folded in a folding process, and when the foldable display panel is stretched for multiple times, the foldable display panel stretched for multiple times is easy to fail, and cannot be displayed normally.
[ summary of the invention ]
In view of this, an embodiment of the present invention provides a supporting device for a foldable display panel and a display device, where the supporting device for the foldable display panel includes: a first support plate and a second support plate arranged along a first direction, the first support plate and the second support plate being for supporting a foldable display panel; at least one set of folding assemblies for connecting the first support plate and the second support plate in the first direction; the folding assembly comprises a first rotating body, a second rotating body and a rotating shaft, the first rotating body and the second rotating body are rotatably connected through the rotating shaft, one end of the first rotating body, far away from the rotating shaft, is in sliding fit with the first supporting plate, and/or one end of the second rotating body, far away from the rotating shaft, is in sliding fit with the second supporting plate; when the foldable display panel is bent, the first supporting plate rotates relative to the rotating shaft and slides relative to the first rotating body in a direction close to the rotating shaft; and/or the second support plate rotates relative to the rotating shaft and slides relative to the second rotating body in the direction close to the rotating shaft; because at least one of the first support plate and the second support plate slides towards the direction close to the rotating shaft while rotating, the probability that the foldable display panel is stretched in the bending process is reduced, and the probability that the display panel fails due to stretching is reduced.
As an aspect of the present invention, an embodiment of the present invention provides a supporting device for a foldable display panel, including:
the foldable display panel comprises a first support plate and a second support plate which are arranged along a first direction, wherein the first support plate and the second support plate are used for supporting the foldable display panel, when the foldable display panel is in an unfolded state, in a plane parallel to the foldable display panel, the first direction is perpendicular to a folding axis of the foldable display panel, and the direction parallel to the folding axis of the foldable display panel is a second direction;
at least one set of folding assemblies for connecting the first support plate and the second support plate in the first direction;
the folding component comprises a first rotating body, a second rotating body and a rotating shaft, the first rotating body and the second rotating body are rotatably connected through the rotating shaft, one end of the first rotating body, far away from the rotating shaft, is in sliding fit with the first supporting plate, and/or one end of the second rotating body, far away from the rotating shaft, is in sliding fit with the second supporting plate,
when the foldable display panel is bent, the first support plate rotates relative to the rotating shaft and slides relative to the first rotating body in a direction close to the rotating shaft; and/or the second support plate rotates relative to the rotating shaft and slides relative to the second rotating body in the direction close to the rotating shaft.
In an embodiment of the present invention, the first support plate includes:
the first support body comprises two first side walls extending towards the rotating shaft, and when the foldable display panel is in an unfolded state, the plane where the first side walls are located is parallel to the first direction and is perpendicular to the light-emitting surface of the foldable display panel;
the first side wall is provided with a first extending part extending out of the first supporting body, and a first guide groove is formed in the first extending part;
the folding assembly further comprises two guide bodies arranged on the rotating shaft, each guide body is provided with a second side wall, and the plane where the second side wall is located is parallel to the plane where the first side wall is located;
and a first guide part is arranged on the second side wall, and at least part of the first guide part is positioned in the first guide groove and is in sliding fit with the first guide groove.
In an embodiment of the present invention, the second support plate includes:
the second support body comprises two third side walls extending towards the rotating shaft, and when the foldable display panel is in an unfolded state, the plane where the third side walls are located is parallel to the first direction and is perpendicular to the light emitting surface of the foldable display panel;
the third side wall is provided with a second extending part extending out of the second supporting body, and a second guide groove is formed in the second extending part;
the folding assembly further comprises two guide bodies arranged on the rotating shaft, each guide body is provided with a second side wall, and the plane where the second side wall is located is parallel to the plane where the first side wall is located;
and a second guide part is also arranged on the second side wall, and at least part of the second guide part is positioned in the second guide groove and is in sliding fit with the second guide groove.
In an embodiment of the present invention, a clamping groove is disposed on the guiding body, a clamping pin is disposed at an end of the rotating shaft, and a projection of the clamping pin on the second side wall coincides with a projection of the clamping groove on the second side wall;
the two ends of the rotating shaft are respectively fixed with one guide body through the clamping pin.
In an embodiment of the present invention, the first guide groove and/or the second guide groove is arc-shaped;
when collapsible display panel is the expansion state in the plane at first lateral wall place, the pivot is in the center of the projection on the plane at first lateral wall place is the A point, first guide part is in the center of the projection on the plane at first lateral wall place is the B point, the second lateral wall is in projection on the plane at first lateral wall place is close to the summit that collapsible display panel goes out the plain noodles is the O point to the O point is the utmost point, use the O point as the extreme point and with the second lateral wall is in ray Ox that the projection edge on the plane at first lateral wall place is tangent is the polar axis, curved polar coordinate is:
(αR+r*sin(θ-α)，R-r*cos(θ-α))，
wherein R is the linear distance from the point O to the point A, and R is the linear distance from the point A to the point B; alpha is the rotation angle of the rotating shaft, and theta is the angle of & lt OAB;
when the foldable display panel is folded from the unfolded state to the folded state, the polar coordinates of the first guide part during rotation form a rotation track of the first guide part, and the first arc coincides with the rotation track.
In an embodiment of the present invention, a first sliding groove is formed on a side surface of the first support body close to the rotating shaft, and a dimension of the first sliding groove in the first direction is h 1;
one end of the first rotating body, which is far away from the rotating shaft, is at least partially positioned in the first sliding groove and is in sliding fit with the first sliding groove, and the size of the part, positioned in the first sliding groove, of the first rotating body in the first direction is h2, wherein h1 is more than or equal to h 2.
In an embodiment of the present invention, a second sliding groove is formed on a side surface of the second support body close to the rotating shaft, and a dimension of the second sliding groove in the first direction is h 3;
one end, far away from the rotating shaft, of the second rotating body is at least partially positioned in the second sliding groove and is in sliding fit with the second sliding groove, the size of the part, located in the second sliding groove, of the second rotating body in the first direction is h4, and h3 is more than or equal to h 4.
As a second aspect of the present invention, embodiments of the present invention provide a display device comprising
A foldable display panel; and
the supporting device as claimed in claim, wherein the supporting device is disposed on a side surface of the foldable display panel away from the light emitting surface for supporting the foldable display panel.
In an embodiment of the present invention, a supporting body is disposed on a surface of one side of the foldable display panel close to the supporting device;
when the foldable display panel is in an unfolded state, the distance between the first support plate and the second support plate in the first direction is L1, the size of the projection of the support body on the foldable display panel in the first direction is L2, wherein L2 is not more than L1.
In an embodiment of the invention, when the foldable display panel is in the unfolded state, the dimension of the supporting body in the third direction is W1, the distance between the surface of the first supporting plate close to the light emitting surface and the surface of the first rotating body on the side close to the light emitting surface in the third direction is W2, W1 is not more than W2,
the third direction is perpendicular to the light-emitting surface.
In an embodiment of the present invention, an elastic modulus of the supporting body is less than or equal to the first rotating body and/or the second rotating body.
The embodiment of the invention provides a supporting device of a foldable display panel, which comprises: a first support plate and a second support plate and at least one set of folding assemblies for connecting the first support plate and the second support plate; the folding assembly comprises a first rotating body, a second rotating body and a rotating shaft, the first rotating body and the second rotating body are rotationally connected through the rotating shaft, and one end of the first rotating body, which is far away from the rotating shaft, is in sliding fit with the first supporting plate, and/or one end of the second rotating body, which is far away from the rotating shaft, is in sliding fit with the second supporting plate;
when the foldable display panel is bent, the first support plate rotates relative to the rotating shaft and slides relative to the first rotating body in a direction close to the rotating shaft; and/or the second support plate rotates relative to the rotating shaft and slides relative to the second rotating body in the direction close to the rotating shaft; when the foldable display panel is bent, at least one of the first support plate and the second support plate slides towards the direction close to the rotating shaft while rotating, so that the probability that the foldable display panel is stretched in the bending process is reduced, and the probability that the display panel fails due to stretching is reduced.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a supporting apparatus for a foldable display panel according to an embodiment of the present invention;
fig. 2 is an exploded view of the support device of the foldable display panel shown in fig. 1;
fig. 3 is a schematic structural view illustrating a first support plate of a support apparatus for a foldable display panel according to another embodiment of the present invention;
fig. 4 is a schematic structural view illustrating a guide body in a supporting apparatus for a foldable display panel according to another embodiment of the present invention;
fig. 5 is a partially enlarged view illustrating a region a in the supporting device of the foldable display panel shown in fig. 1 according to the present invention;
fig. 6 is an exploded view of a hinge and a guide body in a supporting device of a foldable display panel according to another embodiment of the present invention;
fig. 7 is a schematic polar coordinate view of a first guiding portion of a guiding body when a foldable display panel according to another embodiment of the present invention is folded;
fig. 8 is a front view of a supporting device of a foldable display panel according to an embodiment of the present invention;
fig. 9 is a schematic view illustrating a second support plate of the support apparatus for a foldable display panel according to another embodiment of the present invention;
FIG. 10 is a schematic structural view of a guide body according to another embodiment of the present invention;
fig. 11 is a front view of a supporting device of a foldable display panel according to another embodiment of the present invention;
fig. 12 is a schematic structural diagram of a display device according to an embodiment of the invention;
fig. 13 is a schematic structural diagram of a display device according to another embodiment of the invention.
[ detailed description ] embodiments
In order to better understand the technical scheme of the invention, the following detailed description of the embodiments of the invention is made with reference to the accompanying drawings.
It should be understood that the described embodiments are only some embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be understood that the term "and/or" as used herein is merely a relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B, may represent: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter associated objects are in an "or" relationship.
Fig. 1 is a schematic structural view illustrating a supporting apparatus for a foldable display panel according to an embodiment of the present invention, and fig. 2 is an exploded view illustrating the supporting apparatus for the foldable display panel shown in fig. 1; as shown in fig. 1, the supporting device of the foldable display panel includes: the display device comprises a first support plate 1 and a second support plate 2 arranged along a first direction X, wherein the first support plate 1 and the second support plate 2 are used for supporting a foldable display panel. When the foldable display panel is in an unfolded state, in a plane parallel to the foldable display panel, the first direction X is perpendicular to a folding axis (not shown) of the foldable display panel, and a direction parallel to the folding axis of the foldable display panel is a second direction Y; at least one folding assembly 3 for connecting the first support plate 1 and the second support plate 2 in the first direction X, it should be noted that the folding axis in this application is only used to describe a folding concept, giving the direction of a reference axis, since the folding state of the display panel is determined by the folding state of the support device. When the display panel and the supporting device are used as two independent bodies, the folding shaft can be a virtual shaft, the position of the folding shaft is superposed with the position of the rotating shaft of the device for supporting the display panel, and when the display panel comprises the supporting device, the folding shaft can be the rotating shaft of the supporting device. As shown in fig. 2, the folding assembly 3 includes a first rotating body 31, a second rotating body 32 and a rotating shaft 33, the first rotating body 31 is rotatably connected to the second rotating body 32 through the rotating shaft 33, and one end of the first rotating body 31 far away from the rotating shaft 33 is slidably engaged with the first supporting plate 1, and/or one end of the second rotating body 32 far away from the rotating shaft 33 is slidably engaged with the second supporting plate 2, when the foldable display panel is folded, the first supporting plate 1 rotates relative to the rotating shaft 33 and slides relative to the first rotating body 31 in a direction close to the rotating shaft 33; and/or the second support plate 2 rotates with respect to the rotation shaft 33 and slides with respect to the second rotating body 32 in a direction approaching the rotation shaft 33. That is, when the foldable display panel is bent, at least one of the support plates slides in a direction close to the rotation shaft 33 while rotating, thereby reducing the probability that the foldable display panel is stretched during the bending process, and reducing the probability that the display panel fails due to being stretched.
Specifically, in the process of folding the foldable display panel, the first support plate 1 and the second support plate 2 both slide in the direction close to the rotating shaft 33 while rotating, so that the probability that the foldable display panel is stretched left and right at the same time can be reduced, and the probability that the display panel fails due to being stretched is further reduced.
Fig. 3 is a schematic structural diagram of a first support plate 1 according to an embodiment of the present invention, and as shown in fig. 3, the first support plate 1 includes: the first supporting body 11, the first supporting body 11 includes two first sidewalls 111 extending to the rotating shaft 33, when the foldable display panel is in the unfolded state, a plane where the first sidewalls 111 are located is parallel to the first direction X and is perpendicular to a light emitting surface of the foldable display panel; the first sidewall 111 has a first extending portion 112 extending to the outside of the first supporting body 11, and a first guiding groove 113 is disposed on the first extending portion 112; as shown in fig. 2, the folding assembly 3 further includes two guide bodies 34 disposed on the rotating shaft 33, fig. 4 is a schematic structural diagram of the guide bodies 34 in the folding assembly 3 according to the embodiment of the present invention, as shown in fig. 4, each guide body 34 has a second side wall 341, and a plane where the second side wall 341 is located is parallel to a plane where the first side wall 111 is located; the second side wall 341 is provided with a first guiding portion 342, and at least a part of the first guiding portion 342 is located in the first guiding groove 113 and is in sliding fit with the first guiding groove 113;
when the foldable display panel is bent, the first support plate 1 rotates to drive the first rotating body 31 to rotate, the first rotating body 31 rotates relative to the rotating shaft 33, the first guide part 342 slides in the first guide groove 113 to limit the first support plate 1, so that the first support plate 1 slides in a direction close to the rotating shaft 33 while rotating, and meanwhile, the first rotating body 31 is in sliding fit with the self-adaptive section difference relative to the first support plate 1, so that when the foldable display panel is bent, the probability that the foldable display panel is stretched is reduced, and the probability that the foldable display panel fails due to stretching is reduced.
Specifically, since the first support plate 1 includes two first sidewalls 111, the two first sidewalls 111 are oppositely disposed in the second direction Y; the folding assembly 3 comprises two guide bodies 34, wherein the two guide bodies 34 are respectively arranged at two ends of the rotating shaft 33 in the second direction Y; as shown in fig. 5, when the first guide groove 113 is slidably engaged with the first guide portion 342 of the guide body 34, the first guide portion 342 is located on a side of the notch of the first guide groove 113, and the notch of the first guide groove 113 is opposite to the protruding direction of the first guide portion 342, and the specific arrangement manner of the first guide groove 113 and the first guide portion 342 in the supporting device is not limited.
In an embodiment of the present invention, as shown in fig. 6, a clamping groove 344 is disposed on the guiding body 34, a clamping pin 331 is disposed at an end of the rotating shaft 33, and a projection of the clamping pin 331 on the second side wall 341 coincides with a projection of the clamping groove 344 on the second side wall 341; two ends of the rotation shaft 33 are fixed with a guide body 34 by means of bayonet pins 331, respectively. The projection of the bayonet 331 on the second side wall 341 coincides with the projection of the bayonet 344 on the second side wall 341, so that the relative sliding between the rotating shaft 33 and the guide body 34 in the rotating process can be prevented, and the fixing stability between the rotating shaft 33 and the guide body 34 is improved.
In one embodiment of the present invention, the first guide groove 113 has an arc shape; when the foldable display panel is in the unfolded state, in the plane of the first sidewall 111, as shown in fig. 7, the center of the projection of the rotating shaft 33 on the plane of the first sidewall 111 is point a, the center of the projection of the first guide portion 342 on the plane of the first sidewall 111 is point B, the vertex of the projection of the second sidewall 341 on the plane of the first sidewall 111, which is close to the light exit surface of the foldable display panel, is point O, the point O is taken as a pole, the ray Ox, which is taken as an end point and tangent to the projection edge of the second sidewall 341 on the plane of the first sidewall 111, is a polar axis, and the polar coordinates of the arc are:
(αR+r*sin(θ-α)，R-r*cos(θ-α))，
wherein R is the linear distance from the point O to the point A, and R is the linear distance from the point A to the point B; alpha is the rotation angle of the rotating shaft 33, and theta is the angle of & lt OAB;
when the foldable display panel is folded from the unfolded state, the polar coordinates of the first guide part 342 when rotating form the rotating track of the first guide part 342, the first arc coincides with the rotating track, so that the first support plate 1 can rotate and slide close to the rotating shaft 33, the foldable display panel is unfolded from the unfolded state to the folded state, and the display failure of the foldable display panel caused by the stretching in the bending process is avoided.
In an embodiment of the present invention, as shown in fig. 8, a first sliding slot 114 is formed on a side surface of the first supporting body 11 close to the rotating shaft 33, and a dimension of the first sliding slot 114 in the first direction X is h 1; one end of the first rotating body 31 away from the rotating shaft 33 is at least partially located in the first sliding slot 114 and is in sliding fit with the first sliding slot 114, and a dimension of a portion of the first rotating body 31 located in the first sliding slot 114 in the first direction X is h2, where h1 is greater than or equal to h2, so that during the folding process of the foldable display panel, the first rotating body 31 can slide in the first sliding slot 114 in the first supporting body 11, that is, the first supporting body 11 and the first rotating body 31 slide with each other, so that the first supporting plate 1 can slide in a direction close to the rotating shaft 33 while rotating.
When the foldable display panel is folded, fig. 3-8 show a specific implementation manner that the first support plate 1 slides in a direction close to the rotating shaft 33 while rotating; fig. 9 is a schematic structural diagram of a second supporting plate 2 according to an embodiment of the present invention, and as shown in fig. 9, the second supporting plate 2 includes: the second support body 21, the second support body 21 includes two third sidewalls 211 extending toward the rotation shaft 33, when the foldable display panel is in the unfolded state, a plane on which the third sidewalls 211 are located is parallel to the first direction X and is perpendicular to a light emitting surface of the foldable display panel; the third sidewall 211 has a second extending portion 212 extending to the outside of the second supporting body 21, and the second extending portion 212 is provided with a second guiding groove 213;
as shown in fig. 2, the folding assembly 3 further includes two guiding bodies 34 disposed on the rotating shaft 33, as shown in fig. 10, the guiding bodies 34 have second side walls 341, and the plane of the second side walls 341 is parallel to the plane of the first side walls 111; the second side wall 341 is further provided with a second guiding portion 343, and the second guiding portion 343 is at least partially located in the second guiding groove 213 and is in sliding fit with the second guiding groove 213.
When folding display panel buckles, second backup pad 2 rotates and drives second rotor 32 and rotate, and second rotor 32 winds pivot 33 rotates, and second guide 343 slides in second guide way 213 can play limiting displacement to second backup pad 2 for second backup pad 2 is in the pivoted while, and to the direction slip that is close to pivot 33, and meanwhile, second rotor 32 is poor for 2 sliding fit self-adaptation sections of second backup pad, when folding display panel buckles, has reduced collapsible display panel by tensile probability, has reduced collapsible display panel because of the tensile probability that loses efficacy.
In particular, since the second support plate 2 comprises two third side walls 211, the two third side walls 211 are oppositely arranged in the second direction Y; the folding assembly 3 comprises two guide bodies 34, wherein the two guide bodies 34 are respectively arranged at two ends of the rotating shaft 33 in the second direction Y; the second guide groove 213 on one third sidewall 211 is slidably engaged with the second guide portion 343 in one guide body 34, and the engagement manner is the same as the manner of the sliding engagement between the first guide groove 113 on one first sidewall 111 and the first guide portion 342 in one guide body 34, which is not described herein again. That is, when the two third sidewalls 211 on the second support body 21 are both inner sidewalls, the second sidewalls 341 of the two guide bodies 34 are both sidewalls far away from the rotating shaft 33 in the second direction Y; when both the third sidewalls 211 on the second support body 21 are outer sidewalls, both the second sidewalls 341 of the two guides 34 are sidewalls that are close to the rotating shaft 33 in the second direction Y; when the two third sidewalls 211 on the second support body 21 are an inner sidewall and an outer sidewall, one of the second sidewalls 341 of the two guide bodies 34 is a sidewall far away from the rotating shaft 33 in the second direction Y, and the other second sidewall 341 is a sidewall near the rotating shaft 33 in the second direction Y.
In an embodiment of the present invention, as shown in fig. 11, a second sliding slot 214 is formed on a side surface of the second supporting body 21 close to the rotating shaft 33, and a dimension of the second sliding slot 214 in the first direction X is h 3;
one end of the second rotating body 32, which is far away from the rotating shaft 33, is at least partially positioned in the second sliding groove 214 and is in sliding fit with the second sliding groove 214, and the dimension of the portion, in the first direction X, of the second rotating body 32, which is positioned in the second sliding groove 214 is h4, wherein h3 is greater than or equal to h 4. In the process of bending the foldable display panel, the second rotator 32 can slide in the second sliding slot 214 in the second supporting body 21, that is, the second supporting body 21 and the second rotator 32 can slide with each other, so that the second supporting plate 2 can slide in the direction close to the rotating shaft 33 while rotating.
Optionally, the dimension h3 of the second sliding slot 214 in the first direction X may be equal to the dimension h1 of the first sliding slot 114 in the first direction X; a dimension h4 of the portion of the second rotating body 32 located in the second slide groove 214 in the first direction X may be equal to a dimension h2 of the portion of the first rotating body 31 located in the first slide groove 114 in the first direction X.
As a second aspect of the present invention, as shown in fig. 12, an embodiment of the present invention provides a display device including
A foldable display panel 100; and
the supporting device 200 as claimed in claim, wherein the supporting device 200 is disposed on a side surface of the foldable display panel 100 away from the light emitting surface for supporting the foldable display panel 100.
According to the display device provided by the embodiment of the invention, when the foldable display panel 100 is bent, at least one support plate in the support device 200 slides towards the direction close to the rotating shaft 33 while rotating, so that the probability that the foldable display panel is stretched in the bending process is reduced, and the probability that the display panel fails due to stretching is reduced.
When the foldable display panel 100 is in a flat state, a second sliding groove 214 is formed on a side surface of the second support body 21 close to the rotating shaft 33, and at least a part of the second rotating body 32 is located in the second sliding groove 214; a first sliding groove 114 is formed on a side surface of the first supporting body 11 close to the rotating shaft 33, and at least a portion of the first rotating body 31 is located in the first sliding groove 114, so that, in a third direction (the third direction is perpendicular to the light emitting surface), a height difference W2 exists between the first rotating body 31 and the first supporting plate 1, and a height difference W3 exists between the second rotating body 32 and the second supporting plate 2, as shown in fig. 12.
Therefore, in another embodiment of the present invention, as shown in fig. 13, a support 300 is disposed on a surface of one side of the foldable display panel 100 close to the supporting device 200; when the foldable display panel 100 is in the unfolded state, the distance between the first support plate 1 and the second support plate 2 in the first direction X is L1, and the size of the projection of the support 300 on the foldable display panel 100 in the first direction X is L2, wherein L2 is not more than L1. In the embodiment of the present invention, a supporting body 300 is disposed on a side surface of the foldable display panel 100 close to the supporting device 200, and the supporting body 300 is capable of compensating for a height difference between the first supporting plate 1 and the first rotating body 31 in the third direction and a height difference between the second supporting plate 2 and the second rotating body 32 in the third direction; and due to the existence of the support 5, when the foldable display panel 100 is bent, the support 300 can protect the foldable display panel 100, reduce friction between the foldable display panel 100 and the support device 200, and reduce the probability of damage to the foldable display panel 100 caused by friction.
Alternatively, L2 ═ L1 may support the foldable display panel 100 to the maximum extent, so that the surface of the foldable display panel 100 close to the supporting device 200 is all in contact with the supporting body 300, thereby reducing the friction between the foldable display panel 100 and the supporting device 200 to the maximum extent, and further reducing the probability of damage to the foldable display panel 100 due to friction.
In another embodiment of the present invention, when the foldable display panel 100 is in the unfolded state, the dimension of the supporting body 300 in the third direction Z is W1, the distance between the surface of the first supporting plate 1 close to the light emitting surface and the surface of the first rotating body 31 on the side close to the light emitting surface in the third direction is W2, and W1 is not less than W2, as shown in fig. 13.
Alternatively, W1 is equal to W2, so that the foldable display panel 100 can be made to be close to the surface of the supporting device 200 to the maximum extent, there is no gap between the supporting device 200 and the surface of the foldable display panel 100, and the height difference between the first supporting plate 1 and the first rotating body 31 in the third direction Z and the height difference between the second supporting plate 2 and the second rotating body 32 in the third direction Z can be compensated to the maximum extent.
Alternatively, the elastic modulus of the supporting body 300 is less than or equal to that of the first rotating body 31 and/or the second rotating body 32.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A support device for a foldable display panel, comprising:
the display panel comprises a first support plate and a second support plate which are arranged along a first direction, wherein the first support plate and the second support plate are used for supporting a foldable display panel, when the foldable display panel is in an unfolded state, in a plane parallel to the foldable display panel, the first direction is perpendicular to a folding axis of the foldable display panel, and the direction parallel to the folding axis of the foldable display panel is a second direction;
at least one set of folding assemblies for connecting the first support plate and the second support plate in the first direction;
the folding component comprises a first rotating body, a second rotating body and a rotating shaft, the first rotating body and the second rotating body are rotatably connected through the rotating shaft, one end of the first rotating body, far away from the rotating shaft, is in sliding fit with the first supporting plate, and/or one end of the second rotating body, far away from the rotating shaft, is in sliding fit with the second supporting plate,
when the foldable display panel is bent, the first supporting plate rotates relative to the rotating shaft and slides relative to the first rotating body in a direction close to the rotating shaft; and/or the second support plate rotates relative to the rotating shaft and slides relative to the second rotating body in the direction close to the rotating shaft;
the first support plate includes:
the first support body comprises two first side walls extending towards the rotating shaft, and when the foldable display panel is in an unfolded state, the plane where the first side walls are located is parallel to the first direction and is perpendicular to the light-emitting surface of the foldable display panel;
the first side wall is provided with a first extending part extending out of the first supporting body, and a first guide groove is formed in the first extending part;
the folding assembly further comprises two guide bodies arranged on the rotating shaft, each guide body is provided with a second side wall, and the plane where the second side wall is located is parallel to the plane where the first side wall is located;
and a first guide part is arranged on the second side wall, and at least part of the first guide part is positioned in the first guide groove and is in sliding fit with the first guide groove.
2. The support device of claim 1,
the second support plate includes:
the second support body comprises two third side walls extending towards the rotating shaft, and when the foldable display panel is in an unfolded state, the plane where the third side walls are located is parallel to the first direction and is perpendicular to the light-emitting surface of the foldable display panel;
the third side wall is provided with a second extending part extending out of the second supporting body, and a second guide groove is formed in the second extending part;
the folding assembly further comprises two guide bodies arranged on the rotating shaft, each guide body is provided with a second side wall, and the plane where the second side wall is located is parallel to the plane where the first side wall is located;
and a second guide part is also arranged on the second side wall, and at least part of the second guide part is positioned in the second guide groove and is in sliding fit with the second guide groove.
3. Support device according to claim 2,
a clamping groove is formed in the guide body, a clamping pin is arranged at the end of the rotating shaft, and the projection of the clamping pin on the second side wall is coincident with the projection of the clamping groove on the second side wall;
the two ends of the rotating shaft are respectively fixed with one guide body through the clamping pin.
4. Support device according to claim 2,
the first guide groove and/or the second guide groove are arc-shaped;
when collapsible display panel is the expanded state in the plane at first lateral wall place, the pivot is in the center of the projection on the plane at first lateral wall place is A point, first guide part is in the center of the projection on the plane at first lateral wall place is B point, the projection of second lateral wall on the plane at first lateral wall place is close to the summit of collapsible display panel play plain noodles is O point, uses O point as the extreme point and with ray Ox that the second lateral wall is tangent at the projection edge on the plane at first lateral wall place is the polar axis, curved polar coordinate is:
(αR+r*sin(θ-α)，R-r*cos(θ-α))，
wherein R is the linear distance from the point O to the point A, and R is the linear distance from the point A to the point B; alpha is the rotation angle of the rotating shaft, and theta is the angle of & lt OAB;
when the foldable display panel is folded from an unfolded state to a folded state, the polar coordinates of the first guide part during rotation form a rotation track of the first guide part, and the arc is overlapped with the rotation track.
5. Support device according to claim 2,
a first sliding groove is formed in the surface of one side, close to the rotating shaft, of the first support body, and the size of the first sliding groove in the first direction is h 1;
one end of the first rotating body, which is far away from the rotating shaft, is at least partially positioned in the first sliding groove and is in sliding fit with the first sliding groove, and the size of the part of the first rotating body, which is positioned in the first sliding groove, in the first direction is h2, wherein h1 is more than or equal to h 2.
6. Support device according to claim 5,
a second sliding groove is formed in the surface of one side, close to the rotating shaft, of the second support body, and the size of the second sliding groove in the first direction is h 3;
one end, far away from the rotating shaft, of the second rotating body is at least partially positioned in the second sliding groove and is in sliding fit with the second sliding groove, the size of the part, located in the second sliding groove, of the second rotating body in the first direction is h4, and h3 is more than or equal to h 4.
7. A display device is characterized by comprising
A foldable display panel; and
the supporting device as claimed in any one of claims 1 to 6, wherein the supporting device is disposed on a side surface of the foldable display panel away from the light exit surface for supporting the foldable display panel.
8. The display device according to claim 7,
a support body is arranged on the surface of one side, close to the support device, of the foldable display panel;
when the foldable display panel is in an unfolded state, the distance between the first support plate and the second support plate in the first direction is L1, the size of the projection of the support body on the foldable display panel in the first direction is L2, wherein L2 is not more than L1.
9. The display device according to claim 8,
when the foldable display panel is in an unfolded state, the dimension of the support body in the third direction is W1, the distance between the surface of the first support plate close to the light emitting surface and the surface of one side of the first rotating body close to the light emitting surface in the third direction is W2, W1 is not more than W2, wherein,
the third direction is perpendicular to the light-emitting surface.
10. The display device according to claim 8 or 9,
the elastic modulus of the support body is less than or equal to the first rotating body and/or the second rotating body.
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| CN202011052002.7A CN112102728B (en) | 2020-09-29 | 2020-09-29 | Support device for foldable display panel and display device |
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| CN113847332B (en) * | 2021-09-26 | 2023-03-03 | 京东方科技集团股份有限公司 | Rotating mechanism and folding display device |
| CN114414400B (en) * | 2022-01-04 | 2024-05-28 | 武汉华星光电半导体显示技术有限公司 | Test device |
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