CN114399953A - Supporting backboard and display device capable of being rolled in sliding mode - Google Patents
Supporting backboard and display device capable of being rolled in sliding mode Download PDFInfo
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- CN114399953A CN114399953A CN202210065264.XA CN202210065264A CN114399953A CN 114399953 A CN114399953 A CN 114399953A CN 202210065264 A CN202210065264 A CN 202210065264A CN 114399953 A CN114399953 A CN 114399953A
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- 238000005096 rolling process Methods 0.000 claims description 15
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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 utility model provides a support backplate and can smooth roll up display device relates to and shows technical field, aims at reducing the risk that the support backplate takes place the dislocation deformation easily. The support back plate comprises a plurality of support bars and at least one elastic connecting part. The plurality of supporting strips are arranged at intervals along the first direction. And each support bar extends in the second direction. The first direction and the second direction are parallel to the reference plane, and the first direction is perpendicular to the second direction. The reference surface is a plane on which the plurality of supporting bars are arranged. The side of the supporting bar is provided with at least one groove, the side is parallel to the second direction and the third direction, and the third direction is perpendicular to the reference surface. The elastic connecting part is arranged between the two adjacent supporting strips. The side is the face that every support bar and elastic connecting portion contacted, and elastic connecting portion and the side contact of support bar are connected, and the part of elastic connecting portion is filled in the recess. The support backplate can be used for a display device.
Description
Technical Field
The invention relates to the technical field of display, in particular to a supporting back plate and a display device capable of being rolled in a sliding mode.
Background
With the development of display technology, Organic Light-Emitting Diode (OLED) display devices have flexible characteristics due to materials and structures, and thus, the possibility of the variety of product appearance forms, such as curved display devices and roll-to-roll display devices, is provided.
Generally, an OLED display device includes a flexible display panel and a supporting backplane disposed at a rear side of the flexible display panel. When the shape of the flexible display panel is changed, the shape of the supporting back plate can be changed accordingly, for example, the flexible display panel is rolled or tiled together to support the flexible display panel. In the use process, the problem that the support back plate is easy to be dislocated and deformed exists.
Disclosure of Invention
The embodiment of the invention provides a support back plate and a slidable rolling display device, aiming at reducing the risk that the support back plate is easy to generate dislocation and deformation.
In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:
in one aspect, a support backboard is provided, which comprises a plurality of support bars and at least one elastic connecting part. The plurality of supporting strips are arranged at intervals along the first direction. And each support bar extends in the second direction. The first direction and the second direction are parallel to a reference plane, and the first direction is perpendicular to the second direction. The reference surface is a plane where the plurality of supporting bars are located. The side of support bar is equipped with at least one recess, the side is on a parallel with second direction and third direction, the third direction perpendicular to the reference surface. The elastic connecting parts are arranged between two adjacent supporting strips. The side is every the support bar with the face that the elastic connecting portion contacted, the elastic connecting portion with the side contact of support bar and connection, the part of elastic connecting portion is filled in the recess.
The embodiment of the invention provides a supporting back plate and a display device capable of being rolled in a sliding mode. Through set up elastic connection portion between two adjacent support bars, make two adjacent support bars link together, because be equipped with at least one recess on the face that support bar and elastic connection portion contacted, under this condition, the part of elastic connection portion is filled in the recess, has further improved the steadiness that support bar and elastic connection portion are connected, so, aim at reducing the risk that the backplate takes place the dislocation deformation easily.
In some embodiments, the groove extends along the third direction and penetrates through the surfaces of the support bars opposite to each other in the third direction.
In some embodiments, the grooves are disposed on two opposite side surfaces of the supporting bar, and the grooves disposed on the two side surfaces are staggered with each other along the first direction.
In some embodiments, at least one position of the groove has a dimension in the second direction that is larger than a dimension of an opening position of the groove in the second direction.
In some embodiments, the shape of the orthographic projection of the groove on the reference surface is a polygon or an arc and/or the size of the groove along the first direction is one fourth to one half of the size of the supporting strip along the first direction.
In some embodiments, the support back plate further includes a support portion disposed at one side of the plurality of support bars along the first direction.
In some embodiments, the support bar includes first and second surfaces opposing in the third direction. The support portion includes third and fourth surfaces opposite in the third direction. The first surface and the third surface are flush, and the second surface and the fourth surface are flush.
In some embodiments, the support back plate further includes an adhesive layer between and bonded to the adjacent elastic connection portions and the adjacent support bars.
In some embodiments, the material of the elastic connection portion includes at least one of silicone and thermoplastic polyurethane elastomer.
In another aspect, a rollable display device is provided, which includes a display panel and the supporting backplane of any of the above embodiments. The display panel comprises a sliding rolling part and a non-sliding rolling part which are sequentially arranged along the first direction and are connected with each other. The supporting back plate is arranged on one side opposite to the light emergent side of the display panel; the plurality of supporting bars and the at least one elastic connecting part of the supporting back plate are positioned on one side of the sliding rolling part.
Drawings
Fig. 1 is a schematic structural diagram of a rollable display device according to some embodiments of the present disclosure;
fig. 2 is a schematic structural view of an assembled display panel and supporting backplate according to some embodiments of the present disclosure;
fig. 3 is a schematic structural view of another display panel and a supporting backplate according to some embodiments of the present disclosure after being assembled;
fig. 4 is a schematic structural view of another display panel and a supporting backplate according to some embodiments of the present disclosure after being assembled;
fig. 5 is a schematic top view of a support backplate according to some embodiments of the present disclosure;
FIG. 6 is a cross-sectional view of the support backplate of FIG. 5 taken along the direction A-A';
FIG. 7 is a schematic structural view of a brace bar according to some embodiments of the present disclosure;
FIG. 8 is a schematic structural view of another support bar provided in some embodiments of the present disclosure;
FIG. 9 is a schematic structural view of another support bar provided in accordance with certain embodiments of the present disclosure;
FIG. 10 is a schematic view of a support bar according to another embodiment of the present disclosure;
FIG. 11 is a schematic structural view of a groove according to some embodiments of the present disclosure;
FIG. 12 is a schematic view of a support portion connected to a support bar according to some embodiments of the present disclosure;
FIG. 13 is a schematic view of another support portion coupled to a support bar according to some embodiments of the present disclosure;
fig. 14 is a schematic structural view of a support backplate according to some embodiments of the present disclosure;
fig. 15 is a schematic structural view of another supporting backplate according to some embodiments of the present disclosure;
FIG. 16 is a schematic structural diagram illustrating a retracted state of a rollable display device according to some embodiments of the present disclosure;
FIG. 17 is a schematic diagram of an extended state of a rollable display device according to some embodiments of the present disclosure;
fig. 18 is a flowchart of a method for manufacturing a support backplate according to some embodiments of the present disclosure.
Detailed Description
Technical solutions in some embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present disclosure, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments provided by the present disclosure belong to the protection scope of the present disclosure.
Unless the context requires otherwise, throughout the description and the claims, the term "comprise" and its other forms, such as the third person's singular form "comprising" and the present participle form "comprising" are to be interpreted in an open, inclusive sense, i.e. as "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" and the like are intended to indicate that a particular feature, structure, material, or characteristic associated with the embodiment or example is included in at least one embodiment or example of the present disclosure. The schematic representations of the above terms are not necessarily referring to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be included in any suitable manner in any one or more embodiments or examples.
In the following, the terms "first", "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. As used in this specification and the appended claims, the singular forms "a", "an", and "the" include plural referents unless the content clearly dictates otherwise. In the description of the embodiments of the present disclosure, "a plurality" means two or more unless otherwise specified.
"at least one of A, B and C" has the same meaning as "A, B or at least one of C," each including the following combination of A, B and C: a alone, B alone, C alone, a and B in combination, a and C in combination, B and C in combination, and A, B and C in combination.
"A and/or B" includes the following three combinations: a alone, B alone, and a combination of A and B.
As used herein, "about" or "approximately" includes the stated values as well as average values within an acceptable deviation range for the particular value, as determined by one of ordinary skill in the art in view of the measurement in question and the error associated with the measurement of the particular quantity (i.e., the limitations of the measurement system).
It will be understood that when a layer or element is referred to as being "on" another layer or substrate, it can be directly on the other layer or substrate, or intervening layers may also be present.
Example embodiments are described herein with reference to cross-sectional and/or plan views as idealized example figures. In the drawings, the thickness of layers and regions are exaggerated for clarity. The exemplary embodiments of the present disclosure should not be construed as limited to the shapes of the regions illustrated herein but are to include deviations in shapes that result, for example, from manufacturing. For example, an etched region shown as a rectangle will typically have curved features. Thus, the regions illustrated in the figures are schematic in nature and their shapes are not intended to illustrate the actual shape of a region of a device and are not intended to limit the scope of the exemplary embodiments.
As shown in fig. 1, some embodiments of the present disclosure provide a rollable display device 100, where the rollable display device 100 can be used as any product or component with a display function, such as a television, a mobile phone, a tablet computer, a notebook computer, a digital photo frame, or a navigator, and the application of the rollable display device 100 is not limited by the embodiments of the present disclosure.
In some embodiments, the rollable display device 100 includes an electroluminescent display or other type of display.
In some examples, the electroluminescent Display includes an Organic Light-Emitting Display (Organic Light-Emitting Diode Display), a Quantum Dot electroluminescent Display (Quantum Dot Light Emitting Diodes), or a Micro-Light Emitting Diode Display (Micro-LED Display).
In some embodiments, as shown in fig. 2, the rollable display device 100 can include a display panel 2 and a support backplane 1 disposed on a side of the display panel 2 opposite the light exit side 20. The display panel 2 includes a sliding roll portion 21 and a non-sliding roll portion 22 that are sequentially arranged and connected in the first direction X.
Since the rollable display device 100 has the function of roll sliding, the display panel 2 is a flexible display panel and can be bent according to the application requirements. That is, the support back plate 1 may be bent as the flexible display panel is bent.
In some examples, as shown in fig. 3, an adhesive layer 201, a patterned metal support 202, and a buffer layer 203 may be included between the display panel 2 and the support backplane 1, which are sequentially stacked, the adhesive layer 201 is in contact with and connected to the support backplane 1, and a material of the adhesive layer 201 may include a thermosetting resin or a light curable resin. Illustratively, the material of the adhesive layer 201 is a pressure-sensitive adhesive, such as an acrylate pressure-sensitive adhesive, which improves the connection stability with the supporting backplane 1. The patterned metal support 202 achieves a better heat dissipation effect for the display panel 2. The material of the buffer layer 203 may be foam rubber to play a role of buffer protection for the display panel 2.
In addition, the display panel 2 and the support backplate 1 can also be fixed together by other structures, such as fasteners, buckles, and the like, and the embodiment of the present disclosure does not limit the fixing manner of the display panel 2 and the support backplate 1, as long as the fixing between the two can be realized.
The embodiment of the present disclosure provides a supporting backboard 1, which can be applied to the slidable rolling display device 100 described in the above embodiments, as shown in fig. 4, the supporting backboard 1 may include a plurality of supporting bars 12 and at least one elastic connecting portion 11. The plurality of support bars 12 and the at least one elastic connection part 11 are located at one side of the sliding rolling part 21, so that the support bars 12 and the elastic connection part 11 can be slid along with the sliding rolling part 21 during the sliding rolling of the sliding rolling part 21.
As shown in fig. 5 and 6, the plurality of supporting bars 12 are arranged at intervals along the first direction X, and each supporting bar 12 extends along the second direction Y. The first direction X and the second direction Y are parallel to the reference plane M, and the first direction X is perpendicular to the second direction Y. The reference plane M is the plane on which the plurality of support bars 12 lie. The lateral surface of the supporting bar 12 is provided with at least one groove 120, the lateral surface being parallel to the second direction Y and the third direction Z, the third direction Z being perpendicular to the reference plane M. The elastic connecting portion 11 is disposed between two adjacent supporting bars 12. The side surface is a surface of each support bar 12 contacting the elastic connection portion 11, the elastic connection portion 11 contacts and is connected to the side surface of the support bar 12, and a portion of the elastic connection portion 11 is filled in the groove 120. Therefore, the bonding area between the supporting strip 12 and the elastic connecting part 11 can be increased, and the connection stability is improved; and the part of the elastic connecting part 11 is filled in the groove 120, and the clamping can be formed, so that the connection stability is improved.
In the embodiment of the present disclosure, when the supporting backboard 1 is bent, the part of the elastic connecting portion 11 is filled in the groove 120, so that the poor connection stability between the supporting strip 12 and the elastic connecting portion 11 can be prevented, and the phenomenon that the elastic connecting portion 11 falls off is caused, thereby improving the stability of the connection between the supporting strip 12 and the elastic connecting portion 11, and thus reducing the risk of easy occurrence of dislocation and deformation of the supporting backboard 1. In addition, when the support backboard 1 is bent, the groove 120 can release part of the bending stress, the rebound force of the support strip 12 is reduced, and the risk that the support backboard 1 is easy to be dislocated and deformed is further reduced.
In some embodiments, the material of the support strip 12 is a material with certain toughness and rigidity, such as metal, glass, ceramic, or organic material. The toughness of the material ensures the recovery capability of the support backboard 1 after sliding and rolling and the flatness of the support backboard 1 after being unfolded, and the rigidity of the material ensures the support performance of the support backboard 1.
In some examples, the material of the support bar 12 is a metal, such as a rigid thermally conductive material such as stainless steel or copper (Cu). These materials have high rigidity and toughness to match the various requirements of rollable displays.
In some embodiments, the material of the elastic connection portion 11 is at least one of silicone rubber and Thermoplastic polyurethane elastomer (TPU).
In some examples, the material of the elastic connection portion 11 is silicone rubber.
In some examples, the spacing between any adjacent two of the plurality of support bars 12 is substantially equal.
In other examples, the spacing between adjacent support bars 12 of the plurality of support bars 12 is not exactly equal.
In the embodiments of the present disclosure, "not completely equal" means that parts are equal, parts are not equal, or not equal. For example, the intervals between two adjacent support bars 12 in the plurality of support bars 12 are equal, and the intervals between two adjacent support bars 12 are not equal; alternatively, the spacing between any two adjacent support bars 12 is not equal.
Fig. 4 to 6 illustrate that the distance between any two adjacent support bars 12 in the plurality of support bars 12 is completely equal, which is not limited in the embodiment of the present disclosure, and the distance between two adjacent support bars 12 may be selectively set according to the actual requirement of the support backboard 1. For example, the spacing between the support strips 12 at the positions where the support backboard 1 is bent is larger among the plurality of support strips 12. In this way, the elastic connection 11 between the partial support bars 12 can release the bending stress to a greater extent.
In some examples, as shown in fig. 5, the plurality of support bars 12 extend substantially equally long in the second direction Y.
In other examples, the lengths of the plurality of support bars 12 extending along the second direction Y are not all equal.
The embodiment of the present disclosure does not limit this, and the length of the plurality of supporting bars 12 extending along the second direction Y is selectively set according to the shape of the display panel 2 and the roll sliding requirement of the display panel 2. For example, the display area of the display panel 2 is rectangular, and the bending direction of the display panel 2 is parallel to the arrangement direction of the supporting bars 12, the lengths of the supporting bars 12 extending along the second direction Y may be completely equal. For another example, the display area of the display panel 2 is circular or elliptical, and the bending direction of the display panel 2 is parallel to the arrangement direction of the supporting bars 12, so that the lengths of the supporting bars 12 extending along the second direction Y are not completely equal.
The width of the plurality of supporting bars 12 along the first direction X is also not limited in the embodiment of the present disclosure, and as shown in fig. 4 to 6, the widths of the plurality of supporting bars 12 along the first direction X are completely equal. Of course, the widths of the plurality of supporting bars 12 along the first direction X may not be completely equal, and they may be selectively set according to the requirement.
The number of the supporting bars 12 is not limited in the embodiment of the present disclosure, and the number of the supporting bars 12 may be set according to the bending requirement of the supporting backboard 1. For example, in the case that the support backboard 1 has a large area of the slidable rolling area, the support backboard 1 may have a large number of the support bars 12, so that the elastic connection portions 11 connecting the support bars 12 can release the bending stress more effectively, reduce the resilience of the support bars 12, and improve the fatigue resistance of the support backboard 1. As another example, in the case that the support backboard 1 has a bendable region with a smaller area, the support backboard 1 may have a smaller number of the support bars 12, so as to ensure that the structure of the support backboard 1 is simplified on the basis that the elastic connection portions 11 can effectively release the bending stress and reduce the resilience of the support bars 12.
In addition, the shape of the supporting bar 12 is not limited in the embodiment of the present disclosure, and the shape of the supporting bar 12 may be set according to the bending requirement of the supporting backboard. Illustratively, the support bars 12 may be shaped as a regular quadrangular prism or a regular hexagonal prism.
In some embodiments, the number of the grooves 120 is not limited, and may be selectively set according to the bending requirement of the support backboard 1, and according to the structural stability of the support strip 12 itself. Recess 120 extends along third direction Z to run through support bar 12 on third direction Z relative surface, with the area of contact who increases elastic connection portion 11 and support bar 12, improve connection stability, make a plurality of support bars 12 link together, it is more stable, avoid leading to the phenomenon of dislocation deformation.
In some embodiments, as shown in fig. 5, the grooves 120 are disposed on two opposite sides of the supporting bar 12, and the grooves 120 disposed on the two sides are staggered from each other along the first direction X. In this case, a greater influence on the structural stability of the supporting bar 12 is avoided.
In some embodiments, as shown in fig. 7, a dimension D1 of at least one position of the groove 120 in the second direction Y is greater than a dimension D2 of an opening position of the groove 120 in the second direction Y. Therefore, the elastic connecting parts 11 and the supporting strips 12 form a mechanical locking structure, so that the connection stability of the elastic connecting parts 11 and the supporting strips 12 is improved, and the supporting strips 12 are prevented from being separated from the elastic connecting parts 11 when the supporting back plate 1 is bent, so that the supporting strips 12 are prevented from being dislocated and deformed.
In some examples, as shown in fig. 8 and 9, a dimension D3 of the groove 120 in the second direction Y, along the first direction X, and directed from the bottom of the groove 120 to the opening of the groove 120, increases first and then decreases.
In another example, as shown in fig. 10, a dimension D4 of the groove 120 in the second direction Y, along the first direction X, and directed from the bottom of the groove 120 to the opening of the groove 120, gradually decreases.
In some embodiments, as shown in fig. 7, the shape of the orthographic projection of the groove 120 on the reference plane M is an arc, as shown in fig. 8 to 10, the shape of the orthographic projection of the groove 120 on the reference plane M is a polygon, for example, the shape of the orthographic projection of the groove 120 on the reference plane M may be a quadrangle or a pentagon, and in another example, the shape of the orthographic projection of the groove 120 on the reference plane M may be an isosceles trapezoid or a pentagon.
In some embodiments, as shown in fig. 11, the dimension D5 of the groove 120 along the first direction X is one-fourth to one-half of the dimension D6 of the supporting bar 12 along the first direction X. It should be noted that, when the length is less than one-fourth, the part of the elastic connection portion 11 is filled in the groove 120, which is not good in connection stability, and easily causes the sliding out of the elastic connection portion 11 during the rolling process of the supporting backboard 1, and when the length is more than one-half, the overall structure of the supporting strip 12 is easily affected.
In some embodiments, as shown in fig. 12, the support back plate 1 further includes a support portion 13, and the support portion 13 is located at one side of the non-slip part 22. The supporting portion 13 is disposed at one side of the plurality of supporting bars 12 along the first direction X. Illustratively, the support portion 13 is in contact with and connected to the support bar 12. In another example, as shown in fig. 13, there is a gap between the supporting portion 13 and the plurality of supporting bars 12, and the elastic connecting portion 11 is located between the supporting portion 13 and the supporting bars 12 and connected with the supporting portion 13 and the supporting bars 12, so that the supporting portion 13 and the supporting bars 12 are connected and fixed together by the elastic connecting portion 11. The support portion 13 provides a support function for the display panel 2 and can improve the effect of the support backboard 1 being bent and then unfolded.
In some embodiments, as shown in fig. 14, support bar 12 may include first and second surfaces 121, 122 opposing in third direction Z. The supporting portion 13 may include a third surface 131 and a fourth surface 132 opposite in the third direction Z. The first surface 121 is flush with the third surface 131 and the second surface 122 is flush with the fourth surface 132. The first surface 121, the second surface 122, the third surface 131 and the fourth surface 132 are all planar, so that the display panel 2 can be better supported without affecting the display effect of the display panel 2.
In some embodiments, as shown in fig. 15, the support back plate 1 may further include an adhesive layer 204 located between the adjacent elastic connection portions 11 and the support bars 12 and adhered to the adjacent elastic connection portions 11 and the support bars 12. For example, the adhesive layer 204 may be a primer, and since the support strip 12 and the elastic connection portion 11 have different surface properties and are easy to fall off, a layer of primer is coated on the side surface of the support strip 12 contacting the elastic connection portion 11, so as to enhance the adhesion of the surface, further improve the stability of the connection between the elastic connection portion 11 and the support strip 12, and thus improve the stability of the bending of the support backplate 1.
In some embodiments, as shown in fig. 16, the rollable display device 100 can further include a support plate 101, a roller 102, a reversing column 103, a thin guide shaft 104, and a pulling member 105, wherein axial directions of the roller 102, the reversing column 103, and the thin guide shaft 104 are parallel to each other and perpendicular to the first direction X, and the reversing column 103 is located between the roller 102 and the thin guide shaft 104. The non-slip roll portion 22 and the support portion 13 are fixed to the support plate 101, the support portion 13 is located between the non-slip roll portion 22 and the support plate 101, and the support portion 13 is in contact with the support plate 101. The support plate 101 supports and fixes the non-slip portion 22, and the non-slip portion 22 is not bent, thereby providing a flat display effect. The sliding winding part 21 is wound around the roller 102 to realize the bending of the sliding winding part 21, and since the plurality of support bars 12 and the at least one elastic connection part 11 for supporting the backboard 1 are located at one side of the sliding winding part 21, the support bars 12 and the elastic connection parts 11 are wound around the roller 102 and are in contact with the outer circumferential surface of the roller 102. One end of an elastic traction piece 105 is connected to one side of the sliding-winding part 21 far away from the non-sliding-winding part 22, the traction piece 105 is wound on the thin guide shaft 104 and the reversing column 103 in sequence, and the other end of the traction piece 105 is connected to the support plate 101. The thin guide shaft 104 and the reversing column 103 are used for reversing the traction piece 105.
As shown in fig. 16, when a larger display area of the display panel 2 is required, the support plate 101 is pulled in the direction E by an external force, and the pulling member 105 has elasticity, so that when the support plate 101 is pulled, the slider 21 is bent on the roller 102, and the hidden portion of the display panel 2 is pulled out, thereby spreading out the display panel 2 over a larger display area. As shown in fig. 17, when a small display area of the display panel 2 is required, the support plate 101 is pushed in the direction F by an external force, and thus the slider 21 is bent and slid on the roller 102 by the external force and the elastic force of the pulling member 105, and is hidden under the support plate 101, thereby reducing the display area.
As shown in fig. 18, an embodiment of the present disclosure provides a method for preparing a supporting backplate 1, including:
and S1, providing a carrier film.
In the above step, the carrier film may be a PET protective film, the material of the PET protective film includes polyethylene glycol terephthalate (PET), and the thickness of the PET protective film may be 0.1 mm.
S2, forming a plurality of supporting bars 12 along the first direction X on the carrier film, and forming grooves 120 on the lateral sides of the supporting bars 12.
In the above step, the plurality of supporting bars 12 are arranged at intervals along the first direction X. In the case that the carrier film is a PET protective film, since the PET protective film has a certain viscosity, the plurality of support bars 12 may be directly placed on the PET protective film at set intervals to fix the positions of the plurality of support bars 12.
S3, forming an adhesive layer 204 on the side of each supporting strip 12 contacting the elastic connection part 11, forming the elastic connection part 11 in the gap between two supporting strips 12 among the plurality of supporting strips 12,
in the above steps, the elastic connection portion 11 is in contact with and connected to each support bar 12, for example, the adhesive layer 204 may be a primer, the primer has certain viscosity, and may enhance the stability of the connection between the support bars 12 and the elastic connection portion 11, for example, the material of the elastic connection portion 11 may be silica gel, and in addition, the silica gel may be injected into the groove 120 by using liquid silica gel injection molding or hot pressing, and then the silica gel liquid is heated to be dehumidified and dried, so as to be solidified, thereby enhancing the connection stability between the silica gel and the support bars 12.
In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. A support backing plate, comprising:
the supporting strips are arranged at intervals along the first direction, and each supporting strip extends along the second direction; the first direction and the second direction are parallel to a reference surface, the first direction is perpendicular to the second direction, and the reference surface is a plane where the plurality of supporting bars are located; the side surface of the supporting bar is provided with at least one groove, the side surface is parallel to the second direction and a third direction, and the third direction is perpendicular to the reference surface; and the number of the first and second groups,
the elastic connecting parts are arranged between two adjacent supporting strips; the side is every the support bar with the face that the elastic connecting portion contacted, the elastic connecting portion with the side contact of support bar and connection, the part of elastic connecting portion is filled in the recess.
2. The support backplate of claim 1, wherein the grooves extend in the third direction and extend through the support bar at opposite surfaces thereof in the third direction.
3. The support backboard according to claim 1, wherein the grooves are arranged on two opposite sides of the support strip, and the grooves arranged on the two sides are staggered with each other along the first direction.
4. The support backplate of claim 2, wherein at least one location of the recess has a dimension in the second direction that is greater than a dimension of an open location of the recess in the second direction.
5. The support backplate of claim 1, wherein an orthographic projection of the groove on the reference surface is polygonal or arc-shaped and/or a dimension of the groove in the first direction is one quarter to one half of a dimension of the support bar in the first direction.
6. The support backing plate of any one of claims 1 to 5, further comprising:
and the supporting parts are arranged on one sides of the plurality of supporting strips along the first direction.
7. The support backing plate of claim 6, wherein the support bar comprises first and second surfaces opposing each other in the third direction, and the support portion comprises third and fourth surfaces opposing each other in the third direction, the first and third surfaces being flush, the second and fourth surfaces being flush.
8. The support backing plate of any one of claims 1 to 5, further comprising:
and the bonding layer is positioned between the adjacent elastic connecting part and the support bar and is bonded with the adjacent elastic connecting part and the support bar.
9. A support backplate according to any one of claims 1 to 5 in which the material of the resilient connecting portion comprises at least one of silicone and a thermoplastic polyurethane elastomer.
10. A rollable display device, comprising:
the display panel comprises a sliding rolling part and a non-sliding rolling part which are sequentially arranged along the first direction and are connected with each other;
the support backplane of any of claims 1-9, disposed on a side of the display panel opposite a light exit side; the plurality of supporting bars and the at least one elastic connecting part of the supporting back plate are positioned on one side of the sliding rolling part.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210065264.XA CN114399953B (en) | 2022-01-20 | 2022-01-20 | Support backboard and slidable roll display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210065264.XA CN114399953B (en) | 2022-01-20 | 2022-01-20 | Support backboard and slidable roll display device |
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| CN114399953A true CN114399953A (en) | 2022-04-26 |
| CN114399953B CN114399953B (en) | 2023-11-10 |
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| CN114399953B (en) | 2023-11-10 |
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