CN111081150A - Support membrane and display device - Google Patents
Support membrane and display device Download PDFInfo
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- CN111081150A CN111081150A CN201911422315.4A CN201911422315A CN111081150A CN 111081150 A CN111081150 A CN 111081150A CN 201911422315 A CN201911422315 A CN 201911422315A CN 111081150 A CN111081150 A CN 111081150A
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- support film
- cracking
- display panel
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- cracking layer
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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
Abstract
The invention describes a support film and a display device, wherein the support film comprises a first area corresponding to a non-bending part of a display panel and a second area corresponding to a bending part of the display panel; and a second anti-cracking layer and a first anti-cracking layer are sequentially arranged in the second area, the first anti-cracking layer is used for blocking cracks generated and diffused in the first direction of the supporting film, and the second anti-cracking layer is used for blocking cracks generated and diffused in the second direction of the supporting film. The first anti-cracking layer is used for preventing a support film for supporting the display panel from being damaged in the bending process and limiting transverse cracks from extending from the edge of the support film to the inside, the second anti-cracking layer is used for increasing the whole quantity and area of the anti-cracking layers in the support film and reducing the generation of the cracks in the support film and the probability of the cracks extending in the support film, and meanwhile, the second anti-cracking layer is used for blocking longitudinal cracks generated and spread in the second direction of the support film, and the longitudinal cracks can be induced by the arrangement of the first anti-cracking layer in the bending process.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to a support film and a display device including the support film.
Background
In order to ensure the stability of the flexible organic light emitting display device during the above operations, the bending portion of the display panel should be configured with a reliable support so as to prevent the display panel from being damaged during the bending, folding and curling, and a support film is usually disposed on a side of the display panel away from the light exit surface.
However, while the display panel itself is paid more and more attention and research, the reliability of the support film is often neglected, and when the support film is broken and damaged, the support film cannot support the display panel sufficiently, so that the display effect of the flexible display panel is finally affected.
Disclosure of Invention
In view of the foregoing, the present invention provides a support film structure for improving reliability of a support film in a flexible display device and a display device including the support film.
The invention provides a support film, the support film is positioned on one side of a display panel departing from a light-emitting surface, and the support film comprises:
a first region corresponding to the non-bending part of the display panel and a second region corresponding to the bending part of the display panel;
and a second anti-cracking layer and a first anti-cracking layer are sequentially stacked in the second region along the direction of the support film pointing to the display panel, wherein the first anti-cracking layer is used for blocking cracks generated and diffused in the first direction of the support film, the second anti-cracking layer is used for blocking cracks generated and diffused in the second direction of the support film, and the first direction is intersected with the second direction.
Compared with the prior art, the invention has at least one of the following outstanding advantages: the first anti-cracking layer is used for preventing a support film for supporting the display panel from being damaged in the process of bending, folding, curling and other operations, and limiting transverse cracks from extending from the edge of the support film to the inside of the support film; the second crack prevention layer increases the overall number and area of the crack prevention layers in the support film, and reduces the generation of cracks in the support film and the probability of the cracks extending in the support film, and on the other hand, the second crack prevention layer is used for blocking longitudinal cracks generated and spread in the second direction of the support film, and the longitudinal cracks can be induced by the arrangement of the first crack prevention layer during bending, folding, curling and other operations. By arranging the first anti-cracking layer and the second anti-cracking layer, the generation and the diffusion of cracks in multiple directions in the support film can be prevented, so that the reliability of the support film is improved to the maximum extent.
It should be noted that the embodiments of the inventive concept of the present application are not limited to the above-described aspects, which are described in more detail below with reference to the accompanying drawings.
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 perspective view of a display surface device of the present application;
FIG. 2 is a schematic top view of a support film in a second direction according to an embodiment of the present application;
FIG. 3 is a schematic cross-sectional view of a support film in one embodiment of the present application at section A-A in FIG. 2;
FIG. 4 is a partial enlarged view of area B of FIG. 3;
FIG. 5 is a schematic cross-sectional view of a support film in another embodiment of the present application at section A-A in FIG. 2;
FIG. 6 is a partial enlarged view of area B in FIG. 5;
FIG. 7 is a schematic top view of a support film in a second orientation in another embodiment of the present application;
FIG. 8 is a schematic cross-sectional view of the support film at section B-B in FIG. 7 in another embodiment of the present application;
FIG. 9 is a partial enlarged view of area B in FIG. 8;
fig. 10 is a schematic top view of a support film in a second direction in another embodiment of the present application.
FIG. 11 is a schematic cross-sectional view of a support film in another embodiment of the present application at section A-A in FIG. 2;
FIG. 12 is a schematic cross-sectional view of the support film at section A-A in FIG. 2 in another embodiment of the present application;
FIG. 13 is a schematic cross-sectional view of a support film in another embodiment of the present application at section A-A in FIG. 2;
FIG. 14 is a schematic cross-sectional view of a support film in another embodiment of the present application at section A-A in FIG. 2;
FIG. 15 is a schematic cross-sectional view of a support film in another embodiment of the present application at section A-A in FIG. 2;
FIG. 16 is a schematic cross-sectional view of a support film in another embodiment of the present application at section A-A in FIG. 2;
fig. 17 is a schematic diagram of a display device according to an embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, the present invention is further described with reference to the accompanying drawings and examples.
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 one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
Furthermore, unless explicitly described to the contrary, the appearances of the phrase "comprising" or "comprising" in the following text are to be understood as encompassing the recited elements, but not excluding any other elements.
Referring to fig. 1, fig. 1 is a schematic perspective view of a display device according to the present application, the display device including a display panel 100 and a support film 200 supporting the display panel 100; in order to more clearly define the technical solution to be protected by the present application and reduce too many repetitive descriptions, the following only exemplifies that the display panel 100 is a foldable display panel, but it should be noted that the display panel 100 in the present application should be understood to cover all display panels with flexibility.
The display panel 100 has a plurality of non-bending portions NBA and at least one bending portion BA, and the support film 200 has a first region 210 corresponding to the non-bending portions NBA of the display panel 100 and a second region 220 corresponding to the bending portion BA of the display panel 100.
The support film 200 is located on a side of the display panel 100 facing away from the light emitting surface, and a plurality of additional layers, such as an adhesive layer or a buffer layer, may be disposed between the support film 200 and the display panel 100, which is not limited herein.
Referring to fig. 2 to 3, in which fig. 2 is a schematic top view of the support film 200 in a second direction, the second direction being a Y-axis direction in fig. 1, fig. 3 is a schematic cross-sectional view of the support film 200 in a cross-section a-a in fig. 2, a second anti-crack layer 222 and a first anti-crack layer 221 are sequentially stacked in the second region 220 along a direction (i.e., the second direction) in which the support film 200 points to the display panel 100, the first anti-crack layer 221 is used for blocking cracks generated and propagated in the first direction by the support film 200, and the second anti-crack layer 222 is used for blocking cracks generated and propagated in the second direction by the support film 200, wherein the first direction intersects with the second direction.
The first anti-cracking layer 221 includes a first anti-cracking material capable of preventing the support film 200 from generating transverse cracks due to external impact, the first anti-cracking material may be, but is not limited to, an organic tough polymer or a high fracture toughness material added to the organic tough polymer, the high fracture toughness material may be, but is not limited to, a metal oxide, an alloy or the like, the transverse cracks propagate along a first direction, but at the same time, the arrangement of the first anti-cracking layer 221 may induce the generation of cracks in a second direction, and thus the second anti-cracking layer 222 includes a second anti-cracking material capable of preventing longitudinal cracks generated in the second direction, and the second anti-cracking material may be the same as the first anti-cracking material. For better crack stop effect, the first direction may be an X-axis direction in fig. 1, and the second direction may be a Y-axis direction in fig. 1.
Next, referring to fig. 2 to 11, the first anti-crack layer 221 of the support film 200 will be described in more detail.
Referring to fig. 2 to 3, the first anti-crack layer 221 includes at least one first groove 2211, the extending direction (Z-axis direction in fig. 2) of the first groove 2211 is parallel to the edge of the second area 220, and the edge of the second area 220 is the edge of the second area 220 that is not connected to the first area 210. The opening of the first groove 2211 faces the display panel 100, and the first groove 2211 is filled with a first anti-cracking material. The first crack prevention material in the first groove 2211 serves to prevent the support film 200 supporting the display panel 100 from being damaged during bending, folding, and curling operations, and to limit lateral cracks from extending from the edge of the support film 200 to the inside of the support film 200.
A width of the first groove 2211 in an extending direction thereof may be almost the same as a width L of the second area 220, wherein the width L of the second area 220 is assumed as a dimension of the second area 220 in a Z-axis direction in fig. 2.
Specifically, with continued reference to fig. 3, the number of the first grooves 2211 may be at least two, the first grooves 2211 are respectively disposed at the edges of the second area 220 to ensure that each edge of the second area 220, which is not connected to the first area 210, is provided with a first groove 2211, the cross section of the first groove 2211 perpendicular to the extending direction (the Z-axis direction in fig. 2) may be, but is not limited to, a V shape or a U shape, with reference to fig. 4, fig. 4 being a partial enlarged view of the B area in fig. 3, in this embodiment, a scheme that the cross section of the first groove 2211 perpendicular to the extending direction is a V shape is taken as an example, the first groove 2211 is filled with a first anti-cracking material, the cross section of the first anti-cracking material perpendicular to the extending direction of the first groove 2211 is a triangle, optionally, the cross section of the first anti-cracking material perpendicular to the extending direction of the first groove 2211 is an equilateral triangle, the height of the triangle is marked as H1, and the overall thickness of the support film 200 is marked as H, wherein H1 should be less than or equal to 20% of H as a whole, otherwise the support film 200 may be damaged at the first groove 2211 during bending.
Referring to fig. 5-6, fig. 5 shows a cross-sectional view of the support membrane 200 at a-a in fig. 2, in another embodiment. When the edge of the second area 220 is provided with more than one first groove 2211, with continued reference to fig. 5, the plurality of first grooves 2211 are arranged along the edge of the second area 220 in the direction of the center of the second area 2200, and based on the above design, the center portion of the second area 220 is surrounded by the first area 210 and the plurality of first grooves 2211, thereby preventing cracks from extending along the edge of the second area 220 to the center portion of the second area 220, with continued reference to fig. 6, fig. 6 is a partially enlarged view of the area B in fig. 5, and the heights (h1/h2) of the plurality of first grooves 2211 may be different.
Referring to fig. 7, fig. 7 is a schematic top view of a support film in a second direction according to another embodiment of the present disclosure. The first anti-crack layer 221 may include a plurality of first blind holes 2212, the plurality of first blind holes 2212 are arranged in a row along the edge (Z-axis direction in fig. 7) of the second area 220, and the direction from the edge of the second area 220 to the center of the second area 220 includes at least one row of first blind holes 2212, when the row number is greater than two, an orthographic projection of the first blind holes 2212 of different rows on a first cross section covers an orthographic projection of the second area 220 on a first cross section, the first cross section is perpendicular to the flexible display panel and parallel to the edge of the second area.
Referring to fig. 8, fig. 8 is a cross-sectional view of a support film of another embodiment of the present application taken along section B-B of fig. 7. The opening of the first blind hole 2212 faces the display panel, and the first blind hole 2212 is filled with a second anti-cracking material. The second crack prevention material in the first blind hole 2212 is used to prevent the support film 200 supporting the display panel 100 from being damaged during bending, folding, curling, and the like, and to limit lateral cracks from extending from the edge of the support film 200 to the inside of the support film 200. The orthographic projection of the first blind hole 2212 on the first cross section may be, but is not limited to, a V shape or a U shape, and with reference to fig. 8, the embodiment uses a scheme that the orthographic projection of the first blind hole 2212 on the B-B cross section (first cross section) is a V shape as an example for illustration, the first blind hole 2212 is filled with a second anti-cracking material, the orthographic projection of the second anti-cracking material on the B-B cross section is a triangle, and optionally, the orthographic projection of the second anti-cracking material on the B-B cross section is an equilateral triangle.
Referring to fig. 9, fig. 9 is a partial enlarged view of a region B in fig. 8, and the height of the orthographic projection of the second crack prevention material on the first cross section is marked as h1The overall thickness of the support film 200 is marked as H, where H1Should be less than or equal to 20% of H, otherwise the support film 200 may be damaged at the first blind hole 2212 during bending. The heights of the first blind holes 2212 of different rows may not be the same.
Referring to fig. 10, fig. 10 is a schematic top view of a support film in a second direction according to another embodiment of the present application. The first anti-cracking layer 221 may include both the first groove 2211 and the first blind hole 2212, and when the first groove 2211 and the first blind hole 2212 are simultaneously disposed in the first anti-cracking layer 221, the second anti-cracking material may be the same as the first anti-cracking material. The first anti-cracking material in the first groove 2211 and the second anti-cracking material in the first blind hole 2212 are used to prevent the support film 200 supporting the display panel 100 from being damaged during bending, folding, curling and other operations, and limit lateral cracks from extending from the edge of the support film 200 to the inside of the support film 200.
Referring to FIG. 11, FIG. 11 is a schematic cross-sectional view of a support film in one embodiment of the present application at section A-A of FIG. 2; the first anti-crack layer 221 may further include at least one second groove 2213, the extending direction of the second groove 2213 is parallel to the edge of the second area 220, the opening direction of the second groove 2213 is opposite to the opening direction of the first groove 2211, and the second groove 2213 is filled with the first anti-crack material. The first crack prevention material in the second groove 2213 serves to prevent the support film 200 supporting the display panel 100 from being damaged during bending, folding, and curling operations, and to limit lateral cracks from extending from the edge of the support film 200 to the inside of the support film 200.
The cross section of the second groove 2213 perpendicular to the extending direction thereof is similar to the cross section of the first groove 2211 perpendicular to the extending direction thereof, and details are not repeated herein, it should be noted that, with continued reference to fig. 11, in order to avoid that the support film 200 may be damaged at the first groove 2211 and/or the second groove 2213 during the bending process, the orthographic projection of the first groove 2211 on the display panel 100 does not overlap the orthographic projection of the second groove 2213 on the display panel 100.
Next, referring to fig. 12 to 16, the second crack prevention layer 222 of the support film 200 will be described in more detail.
Referring to FIG. 12, FIG. 12 is a schematic cross-sectional view of a support film in another embodiment of the present application at section A-A in FIG. 2; the orthographic projection of the second anti-cracking layer 222 on the display panel 100 completely covers the orthographic projection of the first anti-cracking layer 221 on the display panel 100. Optionally, referring to fig. 3 or fig. 11, an orthographic projection of the second anti-cracking layer 222 on the display panel 100 completely covers an orthographic projection of the second area 220 on the display panel 100, and optionally, when the support film 200 is in an unbent state, a plane where the second anti-cracking layer 222 is located is parallel to a surface of the second area 220.
The second crack prevention layer 222 increases the overall number and area of crack prevention layers in the support film 200, and reduces the generation of cracks in the support film 200 and the probability of cracks extending in the support film 200, and on the other hand, the second crack prevention layer 222 is used for blocking longitudinal cracks generated and propagated in the second direction (Y-axis direction) of the support film 200, which may be induced by the arrangement of the first crack prevention layer 221 during bending, folding, curling and other operations.
In one embodiment, the second crack prevention layer 222 is disposed below the first groove 2211, and is used for reducing cracks generated due to the arrangement of the first groove 2211 and limiting the possibility or degree of the cracks to spread.
Referring to FIG. 13, FIG. 13 is a schematic cross-sectional view of a support film in another embodiment of the present application at section A-A in FIG. 2; the second anti-crack layer 222 includes at least one first anti-crack subunit 2221, the positions of the first anti-crack subunit 2221 and the first groove 2211 are in one-to-one correspondence, and the number of the first anti-crack subunit 2221 is equal to that of the first groove 2211, and the orthographic projection of the first anti-crack subunit 2221 on the display panel 100 completely covers the orthographic projection of the first groove 2211 on the display panel 100. The first crack prevention subunit 2221 increases the overall number and area of the crack prevention layer in the support film 200, and reduces the generation of cracks in the support film 200 and the probability of cracks extending in the support film 200, on the one hand, and on the other hand, the first crack prevention subunit 2221 serves to block longitudinal cracks generated and spread in the second direction (Y-axis direction) of the support film 200, which may be induced by the arrangement of the first groove 2211 during bending, folding, curling, and other operations.
Referring to FIG. 14, FIG. 14 is a schematic cross-sectional view of a support film in another embodiment of the present application at section A-A in FIG. 2; the second anti-crack layer 222 includes at least two layers of first anti-crack subunits 2221 in a second direction, the second direction is a direction in which the first groove 2211 cracks, and is perpendicular to the display panel 100, orthogonal projections of the first anti-crack subunits 2221 in different layers on the display panel 100 at least partially overlap, and the overlapping first anti-crack subunits 2221 can effectively prevent cracks from extending in the second direction.
In one embodiment, the second crack prevention layer 222 is disposed below the first blind hole 2212 for reducing cracks generated due to the disposition of the first blind hole 2212, while also limiting the likelihood or extent of the cracks from propagating.
With continued reference to fig. 7-9, the second crack prevention layer 222 includes a plurality of second crack prevention subunits 2222, the positions of the second crack prevention subunits 2222 and the first blind holes 2212 are in one-to-one correspondence and the number of the second crack prevention subunits 2222 is equal, and the orthographic projection of the second crack prevention subunit 2222 on the display panel 100 completely covers the orthographic projection of the first blind hole 2212 on the display panel 100. The second crack prevention subunit 2222 increases the overall number and area of the crack prevention layers in the support film 200, and reduces the generation of cracks in the support film 200 and the probability of cracks extending in the support film 200, on the one hand, and on the other hand, the second crack prevention subunit 2222 serves to block longitudinal cracks generated and propagated in the second direction (Y-axis direction) of the support film 200, which may be induced by the arrangement of the first blind hole 2212 during bending, folding, curling, and other operations.
The second crack prevention subunit 2222 may be configured to have different shapes, and the orthographic projection of the second crack prevention subunit 2222 on the display panel 100 may be, but is not limited to, a rectangle, a triangle, or a circle. In order to ensure the anti-cracking effect of the second anti-cracking layer 222, the distance between two adjacent second anti-cracking subunits 2222 should not be less than 3 um.
The second crack prevention layer 222 includes at least two second crack prevention subunits 2222 in the second direction, orthographic projections of the second crack prevention subunits 2222 in different layers on the display panel 100 are at least partially overlapped, and the plurality of overlapped second crack prevention subunits 2222 can effectively prevent cracks from extending in the second direction.
The second anti-cracking layer 222 has a fracture toughness greater than that of the substrate of the support film 200, and thus the material of the second anti-cracking layer 222 may be, but is not limited to, one or more of organic polymer, metal oxide and alloy material.
Referring to FIG. 15, FIG. 15 is a schematic cross-sectional view of a support film in another embodiment of the present application at section A-A in FIG. 2; a stress dispersion layer 223 is further disposed between the second crack prevention layer 222 and the first crack prevention layer 221, and the stress dispersion layer 223 may be an organic tough polymer, such as rubber or PDMS.
When the first anti-cracking layer 221 includes both the first groove 2211 and the second groove 2213, the stress dispersion layer 223 may be disposed between the first groove 2211 and the second anti-cracking layer 222, and/or the stress dispersion layer 223 is disposed between the second groove 2213 and the second anti-cracking layer 222.
Referring to FIG. 16, FIG. 16 is a schematic cross-sectional view of a support membrane of another embodiment of the present application taken at section A-A of FIG. 2; the second crack prevention layer 222 may be disposed in the stress dispersion layer 223, and the disposition of the stress dispersion layer 223 helps to disperse stress, reduce stress concentration, and further improve the blocking effect of the second crack prevention layer 222.
In an embodiment of the present invention, the present invention further provides a display device, which may include the support film provided in any of the above embodiments, where the support film is located on a side of the display panel 100 away from the light emitting surface. In particular, the display device may be any cushion product having a display function, including but not limited to the following categories: the mobile terminal comprises a television, a notebook computer, a desktop display, a tablet computer, a digital camera, a mobile phone, an intelligent bracelet, intelligent glasses, a vehicle-mounted display, medical equipment, industrial control equipment, a touch interaction terminal and the like. Fig. 17 is a schematic diagram of a display device according to an embodiment of the present invention, and fig. 17 schematically illustrates the display device according to the present invention with a mobile phone. The support film in the display device provided by the present invention has the technical features described in any of the above embodiments, and therefore, the display device provided by the present invention has the technical effects of the technical solutions in any of the above embodiments, and the advantageous technical effects of the display device provided by the present invention can refer to the descriptions in the above embodiments, and are not repeated herein.
Finally, it should be noted that the above description is a detailed description of the present invention with reference to specific preferred embodiments, and it should not be construed that the present invention is limited to the specific embodiments. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (13)
1. A support film, the support film is located at one side of a display panel departing from a light-emitting surface, the support film comprises:
a first region corresponding to the non-bending part of the display panel and a second region corresponding to the bending part of the display panel;
and a second anti-cracking layer and a first anti-cracking layer are sequentially arranged in the second area along the direction of the support film pointing to the display panel, the first anti-cracking layer is used for blocking cracks generated and diffused by the support film in the first direction, the second anti-cracking layer is used for blocking cracks generated and diffused by the support film in the second direction, and the first direction is intersected with the second direction.
2. The support film of claim 1, wherein the first direction and the second direction are perpendicular to each other.
3. The support film of claim 1, wherein the first anti-cracking layer comprises at least one first groove, the extending direction of the first groove is parallel to the edge of the second area, the opening of the first groove faces the display panel, and the first groove is filled with a first anti-cracking material.
4. The support film of claim 3, wherein the first groove has a V-shaped or U-shaped cross section perpendicular to the extending direction thereof.
5. The support film according to claim 1 or 3, wherein the first anti-cracking layer comprises a plurality of first blind holes, the plurality of first blind holes are arranged in a row along an edge of the second region, the first blind holes comprise at least one row of the first blind holes in a direction from the edge of the second region to the center of the second region, the first blind holes are opened towards the display panel, and the first blind holes are filled with a second anti-cracking material.
6. The support film of claim 5, wherein an orthographic projection of the first blind hole on a first cross section is V-shaped or U-shaped, the first cross section being perpendicular to the display panel and parallel to an edge of the second region.
7. The support film of claim 1, wherein an orthographic projection of the second anti-cracking layer on the display panel completely covers an orthographic projection of the first anti-cracking layer on the display panel.
8. The support film of claim 3 or 4, wherein the second anti-cracking layer comprises at least one first anti-cracking subunit, the first anti-cracking subunits correspond to the first grooves in a one-to-one manner in number, and the orthographic projection of the first anti-cracking subunits on the display panel completely covers the orthographic projection of the first grooves on the display panel.
9. The support film of claim 8, wherein the second anti-cracking layer comprises at least two layers of the first anti-cracking subunits arranged in a stacked mode in the second direction, and orthographic projections of the first anti-cracking subunits of two adjacent layers on the display panel at least partially overlap.
10. The support film of claim 6, wherein the second anti-cracking layer comprises a plurality of second anti-cracking subunits, the second anti-cracking subunits correspond to the first blind holes in one-to-one mode in number, and the orthographic projection of the second anti-cracking subunits on the display panel completely covers the orthographic projection of the first blind holes on the display panel.
11. The support film of claim 10, wherein the second anti-cracking layer comprises at least two layers of the second anti-cracking subunits which are arranged in a stacked mode in the second direction, and orthographic projections of the second anti-cracking subunits of two adjacent layers on the display panel at least partially overlap.
12. The support film of claim 1, wherein a stress dispersion layer is further disposed between the second anti-cracking layer and the first anti-cracking layer.
13. A display device comprising the support film according to any one of claims 1 to 12, the support film being located on a side of the display panel facing away from the light exit surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201911422315.4A CN111081150B (en) | 2019-12-31 | 2019-12-31 | Support membrane and display device |
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| CN201911422315.4A CN111081150B (en) | 2019-12-31 | 2019-12-31 | Support membrane and display device |
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| CN111081150A true CN111081150A (en) | 2020-04-28 |
| CN111081150B CN111081150B (en) | 2021-08-24 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220141968A1 (en) * | 2020-11-04 | 2022-05-05 | Samsung Display Co., Ltd. | Display device |
| WO2022120598A1 (en) * | 2020-12-08 | 2022-06-16 | 华为技术有限公司 | Support film, display module, and electronic device |
| US20220209145A1 (en) * | 2020-12-30 | 2022-06-30 | Lg Display Co., Ltd. | Foldable display device |
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| CN114694497A (en) * | 2020-12-30 | 2022-07-01 | 乐金显示有限公司 | Foldable display device |
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