CN114446180B - Display panel and display device - Google Patents
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- CN114446180B CN114446180B CN202210161306.XA CN202210161306A CN114446180B CN 114446180 B CN114446180 B CN 114446180B CN 202210161306 A CN202210161306 A CN 202210161306A CN 114446180 B CN114446180 B CN 114446180B
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- 230000008093 supporting effect Effects 0.000 claims abstract description 78
- 239000000758 substrate Substances 0.000 claims abstract description 45
- 239000010410 layer Substances 0.000 claims description 93
- 239000000945 filler Substances 0.000 claims description 52
- 239000000853 adhesive Substances 0.000 claims description 20
- 230000001070 adhesive effect Effects 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 20
- 230000007423 decrease Effects 0.000 claims description 13
- 239000012790 adhesive layer Substances 0.000 claims description 10
- 239000004433 Thermoplastic polyurethane Substances 0.000 claims description 9
- 229920001971 elastomer Polymers 0.000 claims description 9
- 239000000806 elastomer Substances 0.000 claims description 9
- 229920002803 thermoplastic polyurethane Polymers 0.000 claims description 9
- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims description 8
- 229920001187 thermosetting polymer Polymers 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 230000003287 optical effect Effects 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 239000004642 Polyimide Substances 0.000 claims description 4
- -1 polyethylene terephthalate Polymers 0.000 claims description 4
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 4
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 4
- 229920001721 polyimide Polymers 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 2
- 238000012856 packing Methods 0.000 description 10
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Classifications
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
Abstract
The application provides a display panel and a display device, wherein the display panel is provided with two oppositely arranged curled edges and side edges connecting the two curled edges, the curled edges can be curled along a curled path, the display panel is provided with a display surface and a central surface perpendicular to the display surface, and the central surface is parallel to the curled edges and is positioned in the middle between the two curled edges. The display panel includes: a substrate; the supporting layer is arranged on one side of the substrate, which is away from the display surface, and comprises a plurality of supporting bodies and filling bodies, wherein the supporting bodies are arranged at intervals along the extending direction of the side edge, the filling bodies are filled between the two adjacent supporting bodies, the supporting bodies are formed by extending along the extending direction of the curled edge, and at least part of the filling bodies are heavier than the filling bodies near the central surface. The display panel provided by the application can effectively relieve the problem of warping after the display panel is flattened.
Description
Technical Field
The present application relates to the field of display technologies, and in particular, to a display panel and a display device.
Background
With the development of flexible display technology, an OLED (Organic Light-Emitting Diode) display panel shows great potential in flexible display. From a fixed flexible display screen to a foldable display screen, the display screen has the characteristics of large size and portability. In order to further meet the requirement that the display screen can be conveniently stored or carried when not in use, a flexible display screen capable of being curled is generated.
At present, the flexible display panel capable of being curled is mostly considered to be used in the fields of notebook computers, tablet computers, vehicle-mounted display screens and the like, and the user needs to continuously reduce the curling radius and continuously increase the curling circle number due to the use requirement of the user on the light and thin flexible display panel capable of being curled. Therefore, the partially rollable flexible display panel has a problem in that warpage occurs after going from a rolled state to a flattened state.
Disclosure of Invention
The application provides a display panel and a display device, which can relieve the problem of warping after the display panel is flattened.
In a first aspect, an embodiment of the present application provides a display panel having two opposite curled edges and a side edge connecting the two curled edges, the curled edges being capable of being curled along a curl path, the display panel having a display surface and a center plane perpendicular to the display surface, the center plane being parallel to the curled edges and located in a middle between the two curled edges, the display panel comprising: a substrate; the supporting layer is arranged on one side of the substrate, which is away from the display surface, and comprises a plurality of supporting bodies and filling bodies, wherein the supporting bodies are arranged at intervals along the extending direction of the side edge, the filling bodies are filled between the two adjacent supporting bodies, the supporting bodies are formed by extending along the extending direction of the curled edge, and at least part of the filling bodies are heavier than the filling bodies near the central surface.
In some embodiments, at least a portion of the support thickness is greater than a thickness of the support located near the near-center plane; optionally, at least a portion of the filler has a thickness greater than a thickness of the filler located near the central plane; optionally, the thickness of the filling body is less than or equal to the maximum thickness of the support body; optionally, the thickness of the filling body is the same as the thickness of the support body located near the center plane; alternatively, the thickness of the support body gradually decreases from the curled edge to the central plane; alternatively, the thickness of the filling body decreases gradually from the curled edge to the central plane.
In some embodiments, the display panel further includes a filling layer disposed on a side of the support layer away from the substrate; the filling layer comprises a first filling layer and a second filling layer, the first filling layer is arranged on one side of the supporting layer far away from the substrate, and the first filling layer is arranged between the second filling layer and the supporting layer; optionally, the material of the first shim layer includes one or more of a pressure sensitive adhesive, a photosensitive adhesive, and a thermosetting adhesive; optionally, the material of the second shim layer comprises one or more of thermoplastic polyurethane elastomer, polyimide, and polyethylene terephthalate.
In some embodiments, the surface of the first filling layer on the side far away from the substrate is flush with the surface of the support body with the largest thickness on the side far away from the substrate; alternatively, the orthographic projection of the second filling layer on the substrate covers the orthographic projection of the supporting layer on the substrate.
In some embodiments, the plurality of supports are symmetrically disposed with respect to the central plane; and/or the plurality of fillers are symmetrically disposed with respect to the central plane.
In some embodiments, at least a portion of the packing has a density greater than a density of packing located near the central plane; optionally, the density of the filling body gradually decreases from the curled edge to the central plane; alternatively, the packing bodies are symmetrically arranged with respect to the center plane, and the densities of the packing bodies are the same with respect to the center plane.
In some embodiments, the material of the support comprises at least one of steel and thermoplastic polyurethane elastomer; and/or the material of the filling body comprises one or more of pressure sensitive adhesive, photosensitive adhesive and thermosetting adhesive.
In some embodiments, the display panel further includes an adhesive layer, the support body and the substrate being connected by the adhesive layer; optionally, the material of the adhesive layer comprises an optical cement.
In some embodiments, the plurality of supports are equally spaced; and/or the plurality of support bodies are equal in size along the direction perpendicular to the center plane.
In a second aspect, an embodiment of the present application provides a display device, including a display panel provided in any one of the foregoing embodiments.
According to the display panel and the display device provided by the embodiment of the application, the plurality of support bodies and the filling bodies filled between the support bodies are arranged at intervals along the extending direction of the side edges, and the weight of at least part of the filling bodies is larger than that of the filling bodies positioned near the central plane, so that after the display panel is flattened, the position corresponding to the filling body with larger weight near the curled edge has a sinking trend, and the problem of warping after the display panel is flattened can be effectively relieved.
Drawings
Features, advantages, and technical effects of exemplary embodiments of the present application will be described below with reference to the accompanying drawings. In the drawings, like parts are designated with like reference numerals. The figures are not drawn to scale.
FIG. 1 is a schematic view of a prior art display panel in a curled state;
FIG. 2 is a schematic view of a display panel in a flattened state in the prior art;
FIG. 3 is a front view of a display panel according to an embodiment of the present application;
fig. 4 is a front view of a display panel according to another embodiment of the present application;
FIG. 5 is a schematic cross-sectional view of FIG. 4 along line A-A in one embodiment;
FIG. 6 is a schematic cross-sectional view of FIG. 4 taken along line A-A in another embodiment;
FIG. 7 is a schematic cross-sectional view of FIG. 4 taken along line A-A in yet another embodiment;
FIG. 8 is a schematic cross-sectional view of FIG. 4 taken along line A-A in yet another embodiment.
Reference numerals illustrate:
100', a display panel; 111a', curled edges; 100b', sides;
100. a display panel; 100a, curled edges; 100b, sides; 100c, a central plane;
110. a substrate;
120. a support layer; 121. A support body; 122. A filler;
130. filling up the layer; 131. A first filling layer; 132. A second filling layer;
140. and an adhesive layer.
Detailed Description
Features and exemplary embodiments of various aspects of the application are described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the application. It will be apparent, however, to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the application by showing examples of the application. In the drawings and the following description, at least some well-known structures and techniques have not been shown in detail in order not to unnecessarily obscure the present application; also, the dimensions of some of the structures may be exaggerated for clarity. Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
Further, for the sake of understanding and ease of description, the size and thickness of each configuration shown in the drawings are arbitrarily shown, but the inventive concept is not limited thereto. In the drawings, the thickness of layers, films, panels, regions, etc. are exaggerated for clarity. In the figures, the thickness of some layers and regions are exaggerated for better understanding and ease of description.
It will be understood that when an element such as a layer, film, region or substrate is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. Furthermore, throughout the specification, the word "on" the target element means positioned above or below the target element, and does not necessarily mean positioned "at the upper side" based on the direction of gravity.
Moreover, unless explicitly described to the contrary, the word "comprising" will be understood to imply the inclusion of stated elements but not the exclusion of any other elements.
Fig. 1 and 2 show schematic structural views of a display panel 100' in a curled state and a flattened state, respectively, according to the related art.
In order to improve portability of the display panel and the display device, more and more display panels 100 'are developed in a direction to be curled, the display panel 100' may be curled along a predetermined curling path when the display panel 100 'is not required to be used, and, for example, the display panel 100' may be curled around a spiral path as shown in fig. 1. When the display panel 100 'is required to be used, the display panel 100' is flattened. The display panel 100' generally has two curled edges 100a ' disposed opposite to each other and a side edge 100b ' connecting the two curled edges 100a ', and when curled, the curled edges 100a ' curl along a curled path, however, the inventors have found that after the display panel 100' is flattened, as shown in fig. 2, the display panel 100' has a phenomenon that the display panel 100' gradually warps from the middle of the two curled edges 100a ' to the directions of the two curled edges 100a ', resulting in a problem of poor flatness of the display panel 100 '.
Based on the above, the application provides the display panel and the display device, which can effectively relieve the problem of warping after the display panel is flattened, and further improve the flatness of the display panel after the display panel is flattened.
Fig. 3 is a schematic structural diagram of a display panel 100 according to an embodiment of the present application, fig. 4 is a schematic structural diagram of a display panel 100 according to another embodiment of the present application, and fig. 5 is a schematic structural diagram of a cross-section along A-A in fig. 4.
As shown in fig. 3 to 5, the display panel 100 according to the embodiment of the application has two opposite curled edges 100a and a side edge 100b connecting the two curled edges 100 a. The curled edges 100a can be curled along a curl path, and the display panel 100 has a display surface and a center surface 100c perpendicular to the display surface, the center surface 100c being parallel to the curled edges 100a and located at an intermediate position between the two curled edges 100 a. The display panel 100 includes a substrate 110 and a supporting layer 120, where the supporting layer 120 is disposed on a side of the substrate 110 facing away from the display surface. The supporting layer 120 includes a plurality of supporting bodies 121 arranged at intervals along the extending direction of the side edge 100b and a filling body 122 filled between two adjacent supporting bodies 121, the supporting bodies 121 are formed by extending along the extending direction of the curled edge 100a, and at least part of the filling body 122 has a weight greater than that of the filling body 122 located near the central surface 100 c.
Alternatively, the curled edge 100a may be disposed to extend along the length direction of the display panel 100, the side edge 100b may be disposed to extend along the width direction of the display panel 100, or the curled edge 100a may be disposed to extend along the width direction of the display panel 100, and the side edge 100b may be disposed to extend along the length direction of the display panel 100, which may be disposed according to specific needs without limitation herein.
The curl path may be helical and the curled edge 100a is curled along the curl path, the curled edge 100a being helical in the curled state.
At least a portion of the filler 122 is set to have a weight greater than that of the filler 122 located near the center plane 100c, that is, the filler 122 located near the curled edge 100a is set to have a weight greater than that of the filler 122 located near the center plane 100c, so that after the display panel 100 is flattened, the position of the display panel 100 corresponding to the filler 122 having a greater weight has a tendency to sink under the action of its own weight, and the sinking tendency can counter the warpage of the display panel 100 to eliminate at least a portion of the warpage.
According to the display panel 100 provided by the embodiment of the application, the plurality of supporting bodies 121 and the filling bodies 122 filled between the supporting bodies 121 are arranged at intervals along the extending direction of the side edges 100b, and at least part of the filling bodies 122 are heavier than the filling bodies 122 near the central surface 100c, so that after the display panel 100 is flattened, the position corresponding to the filling bodies 122 with larger weight near the curled edge 100a has a sinking tendency, the problem of warping of the curled edge 100a after the display panel 100 is flattened can be effectively relieved, and the flatness of the display panel 100 is improved.
It is understood that only the weight of the filler 122 may be changed, or the weight of the supporting body 121 may be changed at the same time, that is, the weight of the supporting body 121 is set to be greater than the weight of the supporting body 121 located near the center plane 100 c.
Alternatively, the filling body 122 may be formed before being filled between the supporting bodies 121, or the filling body 122 may be poured between the supporting bodies 121 and then cured, for example, the filling body 122 may be a gel. The selection can be specifically performed according to actual requirements, and is not limited herein.
The weight change of the packing 122 may be achieved by changing the volume of the packing 122 or by changing the density of the packing 122. Similarly, the weight of the support body 121 may be changed by changing the density of the support body 121 or by changing the volume of the support body 121.
As shown in fig. 4 and 6, in some embodiments, at least a portion of the support body 121 has a thickness greater than the thickness of the support body 121 located near the center plane 100 c.
Specifically, the "thickness" in the description of the present application refers to the dimension of the supporting layer 120 from the side close to the substrate 110 to the side far from the substrate 110, i.e. the dimension along the direction perpendicular to the display surface.
By providing at least a portion of the supporting body 121 having a thickness greater than that of the supporting body 121 located near the center plane 100c, the weight of the supporting body 121 having a greater thickness is greater than that of the supporting body 121 having a smaller thickness under the condition that the material of the supporting body 121 is unchanged and the dimension along the extending direction of the side edge 100b is unchanged, and by this arrangement, it is still possible to achieve that the weight of at least a portion of the area of the display panel 100 near the curled edge 100a is greater than that near the center plane 100c, and further alleviate the problem of warping after the display panel 100 is flattened.
In some embodiments, at least a portion of the filler 122 has a thickness that is greater than a thickness of the filler 122 located near the central plane 100 c.
It will be appreciated that, with the material of the filler 122 unchanged and the dimension along the extension of the side edge 100b unchanged, the volume of the filler 122 with a larger thickness is larger than that of the filler 122 with a smaller thickness, and thus the weight of the filler 122 with a corresponding larger thickness is also larger, so that the purpose of at least partially increasing the weight of the filler 122 over the weight of the filler 122 located near the center plane 100c can still be achieved.
The thickness of the filler 122 may be greater than, equal to, or less than the thickness of the support 121, and may be set as needed.
In some alternative embodiments, the thickness of the filler 122 is less than or equal to the thickness of the support 121.
It will be appreciated that the thickness of the filling body 122 is less than or equal to the thickness of the supporting body 121, which is beneficial to ensuring the flatness of the supporting layer 120.
Since the thickness of at least the supporting body 121 is larger than the thickness of the supporting body 121 located near the center plane 100c, the thicknesses of at least part of the adjacent supporting bodies 121 are not uniform, and the thickness of the filler 122 filled between the supporting bodies 121 having the non-uniform thicknesses may be uniform with the thickness of the supporting body 121 near the center plane 100c of the filler 122, or may be uniform with the thickness of the filler 122 near the curled edge 100 a.
In some embodiments, the thickness of the filler 122 is the same as the thickness of the support 121 located near the center plane 100 c.
It will be appreciated that for two adjacent support bodies 121 having different thicknesses, the support body 121 near the center plane 100c has a smaller thickness, and the thickness of the filler 122 is the same as the thickness of the support body 121 near the center plane 100c, that is, the thickness of the filler 122 is the same as the thickness of the support body 121 having a smaller thickness of the two adjacent support bodies 121. In this way, when the filler 122 is formed by curing between the supporting members 121, the supporting action of the supporting members 121 on the filler 122 can be ensured, and the curing of the filler 122 can be facilitated.
The thickness of a part of the supporting bodies 121 may be set to be larger than the thickness of the supporting bodies 121 located near the center plane 100c, or the thickness of all the supporting bodies 121 may be set to be larger than the thickness of the supporting bodies 121 located near the center plane 100 c.
In some embodiments, the thickness of the support 121 decreases gradually from the curled edge 100a to the central surface 100 c. That is, the weight of the direction support body 121 from the curled edge 100a to the curled central surface 100c gradually decreases.
It will be appreciated that, the closer to the curled edge 100a, the larger the radian of the display panel 100 that may warp, and the greater the thickness of the supporting body 121, the greater the degree of correction of the degree of warp of the display panel 100, and the direction from the curled edge 100a to the center plane 100c is set, and the thickness of the supporting body 121 gradually decreases, the weight of the supporting body 121 gradually decreases, so that the appropriate weight of the supporting body 121 can be set according to the magnitude of the radian of the display panel 100 that may warp, and the flatness of the flattened display panel 100 is further improved.
In some embodiments, the thickness of the filler 122 decreases gradually from the curled edge 100a to the central surface 100 c. I.e. the weight of the filling body 122 is arranged to decrease gradually from the curled edge 100a to the centre plane 100 c.
As the weight of the supporting body 121 is gradually reduced from the curled edge 100a to the center plane 100c, the weight of the filling body 122 is gradually reduced from the curled edge 100a to the center plane 100c, and the specific weight of the filling body 122 can be set to increase the flatness of the flattened display panel 100 for the radian of the warpage that may occur after the display panel 100 is flattened.
In some embodiments, the display panel 100 further includes a filling layer 130, where the filling layer 130 is disposed on a side of the supporting layer 120 away from the substrate 110. The filling layer 130 includes a first filling layer 131 and a second filling layer 132, the first filling layer 131 is disposed on a side of the supporting layer 120 away from the substrate 110, and the first filling layer 131 is disposed between the second filling layer 132 and the supporting layer 120.
It can be understood that, in the case that the thicknesses of the supporting bodies 121 in the supporting layer 120 are not uniform, or in the case that the thicknesses of the filling bodies 122 in the supporting layer 120 are not uniform, the filling layer 130 is disposed on the side of the supporting layer 120 away from the substrate 110, so that the thickness difference of different supporting bodies 121 or different filling bodies 122 can be filled, so as to ensure the surface flatness of the display panel 100. Specifically, the shim layer 130 may be formed by filling a corresponding material and then curing.
Setting the filling layer 130 to include the first filling layer 131 and the second filling layer 132 can set the thicknesses of the first filling layer 131 and the second filling layer 132 according to the requirement, so that the filling layer 130 is filled twice, and the process operability is improved.
In some embodiments, the density of the first padding layer 131 is lower than the density of the second padding layer 132. Thus, the wear resistance of the second filling layer 132 is guaranteed, and the density of the first filling layer 131 is low, so that the overall weight of the display panel 100 is reduced.
It will be appreciated that the first shim layer 131 may also be provided to have a density that is lower than the density of the filler 122. Because the first filling layer 131 is disposed between the two curled edges 100a near the central plane 100c, the density of the first filling layer 131 is lower than that of the filler 122, which is beneficial to ensuring that the weight of the display panel 100 near the curled edges 100a is higher than that near the central plane 100c, and is further beneficial to alleviating the problem of warping after the display panel 100 is flattened.
In some embodiments, the material of the first shim layer 131 includes one or more of a pressure sensitive adhesive, a photosensitive adhesive, and a thermosetting adhesive.
It will be appreciated that the pressure sensitive adhesive, photosensitive adhesive and thermosetting adhesive have better flexibility after molding, and the first filling layer 131 is formed with better flexibility. The first filling layer 131 is disposed close to the supporting layer 120, and providing the first filling layer 131 with better flexibility is beneficial to improving the flexibility of the display panel 100.
In some embodiments, the material of the second shim layer 132 includes one or more of thermoplastic polyurethane elastomer, polyimide, and polyethylene terephthalate.
It can be appreciated that the thermoplastic polyurethane elastomer, polyimide and polyethylene terephthalate have better wear resistance, so the corresponding second filling layer 132 also has better wear resistance, and the second filling layer 132 is disposed on the surface of the display panel 100, which is beneficial to improving the wear resistance of the display panel 100 and has better protection effect on the display panel 100.
The surface of the first filling layer 131 on the side far away from the substrate 110 may be flush with the surface of the support 121 with the greatest thickness on the side far away from the substrate 110, or may be lower or higher than one another.
In some embodiments, the surface of the first filling layer 131 on the side far from the substrate 110 is flush with the surface of the support 121 with the greatest thickness on the side far from the substrate 110. Thus, the first filling layer 131 is easy to be formed, and in the embodiment where the first filling layer 131 has greater flexibility, the flexibility of the display panel 100 is improved to the greatest extent.
The front projection of the first filling layer 131 on the substrate 110 may be located within the front projection of the supporting layer 120 on the substrate 110, or may cover the front projection of the supporting layer 120 on the substrate 110, which is not limited herein.
As shown in fig. 4 and 7, in some embodiments, the orthographic projection of the second shim layer 132 onto the substrate 110 covers the orthographic projection of the support layer 120 onto the substrate 110. That is, the second filling layer 132 is disposed to completely cover the supporting layer 120, thereby further ensuring the surface flatness of the display panel 100.
In some embodiments, the plurality of supports 121 are symmetrically disposed about the central plane 100 c. In this way, the weight of the display panel 100 at the position corresponding to the support 121 symmetrical to the center plane 100c is the same, so that the degree of warpage alleviation is the same, and the flatness of the display panel 100 is further improved.
In some embodiments, the filler 122 is symmetrically disposed about the central plane 100 c. In the same manner as in the embodiment in which the supporting bodies 121 are symmetrically disposed about the center plane 100c, the filling bodies 122 are symmetrically disposed about the center plane 100c, which is also advantageous for further improving the flatness of the display panel 100.
In some embodiments, at least a portion of the filler 122 has a density that is greater than the density of the filler 122 located near the central plane 100 c. By this arrangement, the weight of the filler 122 near the curled edge 100a can be made larger than the weight of the filler 122 near the center plane 100c, and the warpage of the display panel 100 after flattening can be reduced. And by changing the density of the packing 122 to change the weight of the packing 122, it is possible to have higher workability without changing the volume of the packing 122.
In some embodiments, the density of the filler 122 decreases gradually from the curled edge 100a to the central surface 100 c. By the arrangement, the direction from the curled edge 100a to the central surface 100c can be realized, the weight of the filling body 122 is gradually reduced, the specific weight of the filling body 122 is conveniently set according to the degree of warping of different parts of the display panel 100, and the flatness of the flattened display panel 100 is further improved.
In some embodiments, the density of the fillers 122 is the same for each pair that is symmetrical about the central plane 100 c. By this arrangement, the weights of the filling bodies 122 symmetrical with respect to the center plane 100c can be equal to each other, so that the warpage of the display panel 100 can be reduced, and the flatness of the display panel 100 after flattening can be further improved.
In some embodiments, the material of the support 121 includes at least one of steel and thermoplastic polyurethane elastomer.
It can be appreciated that the steel and the thermoplastic polyurethane elastomer have better structural strength, and the material of the supporting body 121 includes at least one of the steel and the thermoplastic polyurethane elastomer, so that the supporting effect of the supporting body 121 on the filling body 122 can be improved, and the overall structural strength of the display panel 100 can be further improved.
In some embodiments, the material of the filler 122 includes one or more of a pressure sensitive adhesive, a photosensitive adhesive, and a thermosetting adhesive.
It will be appreciated that the pressure sensitive adhesive, the photosensitive adhesive, and the thermosetting adhesive have better flexibility, and thus are disposed to facilitate improvement of flexibility of the display panel 100.
The supporting body 121 may be formed on the substrate 110 by curing, or the supporting body 121 may be bonded on the substrate 110 by gluing after forming, and may be selected according to the specific material of the supporting body 121.
As shown in fig. 4, 7 and 8, in some embodiments, the display panel 100 further includes an adhesive layer 140, and the support 121 and the substrate 110 are adhesively connected through the adhesive layer 140. In this way, the support 121 and the substrate 110 can be bonded and connected by bonding after being molded separately, and the connection stability of the support 121 and the substrate 110 can be improved.
In some embodiments, the material of the adhesive layer 140 includes an optical adhesive. It can be appreciated that the optical adhesive has good adhesion performance, can be cured at room temperature, has the characteristic of small curing shrinkage, and is beneficial to improving the adhesion precision of the display support 121 and the substrate 110 by adhering the support 121 and the substrate 110 with the optical adhesive.
In some embodiments, the plurality of supports 121 are equally spaced. I.e. a plurality of support bodies 121 arranged at equal intervals along the extension direction of the side edge 100b. In this way, the dimension of the filling body 122 filled between the supporting bodies 121 along the extending direction of the side edges 100b is the same, which is more beneficial to forming a structure symmetrically arranged relative to the center plane 100c, so as to improve the flatness of the display panel 100 after flattening.
In some embodiments, the plurality of supports 121 are equal in size in a direction perpendicular to the central plane 100 c.
It can be understood that, like the embodiment in which the plurality of supporting bodies 121 are disposed at equal intervals, the plurality of supporting bodies 121 are disposed at equal dimensions along the direction perpendicular to the central plane 100c, which is beneficial for the supporting bodies 121 to form a structure symmetrically disposed with respect to the central plane 100c, so as to improve the flatness of the display panel 100 after flattening.
The display device provided according to the embodiment of the application includes the display panel 100 provided in any of the above embodiments.
The display device provided in the embodiment of the present application includes the display panel 100 provided in any of the above embodiments, so that the same technical effects are achieved, and the description thereof is omitted herein.
While the application has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the application. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.
Claims (20)
1. A display panel having two oppositely disposed curled edges and side edges connecting the two curled edges, the curled edges being capable of being curled along a curled path, the display panel having a display surface and a central surface perpendicular to the display surface, the central surface being parallel to the curled edges and intermediate between the two curled edges, the display panel comprising:
a substrate;
the support layer is arranged on one side, deviating from the display surface, of the substrate, the support layer comprises a plurality of support bodies and filling bodies, the support bodies are arranged at intervals along the extending direction of the side edges, the filling bodies are filled between two adjacent support bodies, the support bodies are formed by extending along the extending direction of the curled edges, and at least part of the filling bodies are heavier than the filling bodies near the central surface.
2. The display panel of claim 1, wherein at least a portion of the support has a thickness greater than a thickness of the support located near the center plane.
3. The display panel of claim 2, wherein at least a portion of the filler has a thickness greater than a thickness of the filler located near the center plane.
4. The display panel of claim 2, wherein the thickness of the filler is less than or equal to the maximum thickness of the support.
5. The display panel according to claim 2, wherein the thickness of the filler is the same as the thickness of the support body located near the center plane.
6. The display panel according to claim 2, wherein the thickness of the support body gradually decreases from the curled edge to the direction of the center plane.
7. The display panel of claim 2, wherein the thickness of the filler gradually decreases from the curled edge to the center plane.
8. The display panel of claim 2, further comprising a shim layer disposed on a side of the support layer remote from the substrate;
the filling layer comprises a first filling layer and a second filling layer, the first filling layer is arranged on one side, far away from the substrate, of the supporting layer, and the first filling layer is arranged between the second filling layer and the supporting layer.
9. The display panel of claim 8, wherein the material of the first shim layer comprises one or more of a pressure sensitive adhesive, a photosensitive adhesive, and a thermosetting adhesive.
10. The display panel of claim 8, wherein the material of the second filler layer comprises one or more of a thermoplastic polyurethane elastomer, a polyimide, and a polyethylene terephthalate.
11. The display panel according to claim 8, wherein a surface of the first filling layer on a side away from the substrate is flush with a surface of the support body having the greatest thickness on a side away from the substrate; or alternatively, the process may be performed,
the orthographic projection of the second filling layer on the substrate covers the orthographic projection of the supporting layer on the substrate.
12. The display panel according to claim 1, wherein a plurality of the supports are symmetrically arranged with respect to the center plane; and/or the number of the groups of groups,
a plurality of the fillers are symmetrically disposed with respect to the central plane.
13. The display panel according to any one of claims 1 to 12, wherein at least a part of the filler has a density greater than that of the filler located near the center plane.
14. The display panel of claim 13, wherein the density of the filler gradually decreases from the curled edge to the center plane.
15. The display panel according to claim 13, wherein the fillers are symmetrically disposed with respect to the center plane, and the densities of the fillers are the same two by two with respect to the center plane.
16. The display panel of claim 1, wherein the material of the support comprises at least one of steel and a thermoplastic polyurethane elastomer; and/or the number of the groups of groups,
the material of the filling body comprises one or more of pressure sensitive adhesive, photosensitive adhesive and thermosetting adhesive.
17. The display panel according to claim 1, further comprising an adhesive layer, wherein the support body and the substrate are adhesively connected by the adhesive layer.
18. The display panel of claim 17, wherein the material of the adhesive layer comprises an optical adhesive.
19. The display panel according to claim 1, wherein a plurality of the supporting bodies are disposed at equal intervals; and/or the number of the groups of groups,
the plurality of support bodies are equal in size along a direction perpendicular to the center plane.
20. A display device comprising the display panel according to any one of claims 1 to 19.
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