CN114170901B - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
- Publication number
- CN114170901B CN114170901B CN202111448401.XA CN202111448401A CN114170901B CN 114170901 B CN114170901 B CN 114170901B CN 202111448401 A CN202111448401 A CN 202111448401A CN 114170901 B CN114170901 B CN 114170901B
- Authority
- CN
- China
- Prior art keywords
- film layer
- opening
- display panel
- bending
- layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000005452 bending Methods 0.000 claims abstract description 317
- 239000010410 layer Substances 0.000 claims description 309
- 239000012790 adhesive layer Substances 0.000 claims description 195
- 230000001070 adhesive effect Effects 0.000 claims description 39
- 239000000853 adhesive Substances 0.000 claims description 38
- 238000006073 displacement reaction Methods 0.000 claims description 7
- 230000000694 effects Effects 0.000 abstract description 26
- 238000000034 method Methods 0.000 abstract description 16
- 238000010586 diagram Methods 0.000 description 29
- 239000000126 substance Substances 0.000 description 13
- 239000000758 substrate Substances 0.000 description 13
- 230000007423 decrease Effects 0.000 description 9
- 206010040844 Skin exfoliation Diseases 0.000 description 7
- 239000003292 glue Substances 0.000 description 5
- 230000003746 surface roughness Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 239000002346 layers by function Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 239000004820 Pressure-sensitive adhesive Substances 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000009832 plasma treatment Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 239000004984 smart glass Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
Classifications
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The embodiment of the invention discloses a display panel and a display device. The display panel comprises a bending area and a non-bending area which are connected with each other; the display panel comprises a first film layer, a bonding layer and a second film layer which are sequentially stacked, wherein the stress release capacity of a non-bending area is larger than that of the bending area. The stress release capacity of the non-bending area is larger than that of the bending area, so that the stress of the bending area is transferred to the non-bending area in the bending process of the display panel, the stress release is realized, the stress concentration of the bending area is avoided, and the peeling phenomenon is avoided, and the display effect is influenced.
Description
Technical Field
The embodiment of the invention relates to the technical field of display panels, in particular to a display panel and a display device.
Background
Along with the rapid development of display technology, the folding display screen is thinner to the industry, so that the display panel can be switched back and forth between small-screen display and large-screen display, the small-size portable display can be met, and the visual enjoyment under a large visual angle can be met. However, the display effect is seriously affected because the folding display panel is easy to peel off between film layers in the bending area in the folding process.
Disclosure of Invention
The embodiment of the invention provides a display panel and a display device, which are used for avoiding the influence on the display effect caused by easy stripping of a film layer in a bending area due to stress concentration in the bending area of the display panel in the bending process.
In a first aspect, an embodiment of the present invention provides a display panel, including a bending region and a non-bending region connected to each other; the display panel comprises a first film layer, a bonding layer and a second film layer which are sequentially stacked, wherein the stress release capacity of the non-bending area is larger than that of the bending area.
In a second aspect, an embodiment of the present invention further provides a display device, including a display panel according to any one of the first aspect.
The display panel comprises the bending area and the non-bending area which are connected with each other, the display panel comprises the first film layer, the bonding layer and the second film layer which are sequentially stacked, the stress release capacity of the non-bending area is adjusted to be larger than that of the bending area, so that the stress of the bending area is transferred to the non-bending area, the stress release is carried out by the non-bending area, the phenomenon that the bending area is peeled off due to the stress concentration of the bending area in the bending process of the display panel is avoided, and the normal display of the display panel is ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, a brief description will be given below of the drawings required for the embodiments or the description of the prior art, and it is obvious that although the drawings in the following description are specific embodiments of the present invention, it is obvious to those skilled in the art that the basic concepts of the device structure, the driving method and the manufacturing method, which are disclosed and suggested according to the various embodiments of the present invention, are extended and extended to other structures and drawings, and it is needless to say that these should be within the scope of the claims of the present invention.
FIG. 1 is a schematic diagram of a display panel in the prior art;
fig. 2 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
FIG. 3 is a schematic view of the display panel of FIG. 2 in a bent state;
fig. 4 is a schematic top view of a display panel according to an embodiment of the present invention;
FIG. 5 is a schematic cross-sectional view of the structure of FIG. 4 along section line aa';
FIG. 6 is a schematic view of another cross-sectional structure taken along line aa' of FIG. 4;
FIG. 7 is a schematic view of another cross-sectional structure taken along line aa' of FIG. 4;
FIG. 8 is a schematic view of another cross-sectional structure taken along line aa' of FIG. 4;
FIG. 9 is a schematic view of another cross-sectional structure taken along line aa' of FIG. 4;
fig. 10 is a schematic top view of another display panel according to an embodiment of the invention;
FIG. 11 is a schematic top view of another display panel according to an embodiment of the present invention;
fig. 12 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
fig. 13 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
fig. 14 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
fig. 15 is a schematic top view of another display panel according to an embodiment of the invention;
fig. 16 is a schematic top view of another display panel according to an embodiment of the invention;
FIG. 17 is a schematic diagram of another display panel according to an embodiment of the present invention;
FIG. 18 is a schematic diagram of another display panel according to an embodiment of the present invention;
fig. 19 is a schematic top view of another display panel according to an embodiment of the invention;
fig. 20 is a schematic top view of another display panel according to an embodiment of the invention;
FIG. 21 is a schematic cross-sectional view of the structure of FIG. 20 along section line bb';
Fig. 22 is a schematic top view of another display panel according to an embodiment of the invention;
FIG. 23 is a schematic cross-sectional view of the structure of FIG. 22 along the cc' section line;
fig. 24 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
fig. 25 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
fig. 26 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
fig. 27 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
fig. 28 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
fig. 29 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
FIG. 30 is a schematic diagram of another display panel according to an embodiment of the present invention;
fig. 31 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
FIG. 32 is a schematic diagram of another display panel according to an embodiment of the present invention;
FIG. 33 is a schematic diagram of another display panel according to an embodiment of the present invention;
fig. 34 is a schematic structural diagram of a display device according to an embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described by means of implementation examples with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, not all embodiments. All other embodiments obtained by those skilled in the art based on the basic concepts disclosed and suggested by the embodiments of the present invention are within the scope of the present invention.
Fig. 1 is a schematic structural diagram of a display panel in the prior art, as shown in fig. 1, the display panel 10 includes a bending region 11 and a non-bending region 12, the display panel 10 includes a first substrate 13, a second substrate 14, and a glue layer 15 between the first substrate 13 and the second substrate 14, which are stacked in sequence, wherein the glue layer 15 with the same viscosity is disposed in the bending region 11 and the non-bending region 12, and when the display panel is bent for multiple times, due to different bending radii and different stresses of the first substrate 13 and the second substrate 14, the properties of the glue layer 15, the first substrate 13 and the second substrate 14 are the same, and at this time, bending stress of the bending region 11 is concentrated, so that bending stress between the glue layer 11 and the first substrate 13 and the second substrate 14 is released, and peeling between the glue layer 15 and the second substrate 14 is easy to occur, which seriously affects the display effect of the display panel 10.
In order to solve the above technical problems, an embodiment of the present invention provides a display panel, which includes a bending region and a non-bending region connected to each other; the display panel comprises a first film layer, a bonding layer and a second film layer which are sequentially stacked, wherein the stress release capacity of a non-bending area is larger than that of the bending area. The stress release capacity of the non-bending region is adjusted to be larger than that of the bending region, so that the stress of the bending region is transferred to the non-bending region, the non-bending region releases more stress, the phenomenon that the display panel is peeled off between film layers due to stress concentration of the bending region in the bending process is avoided, and normal display of the display panel is ensured.
The foregoing is the core idea of the present invention, and the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without making any inventive effort are within the scope of the embodiments of the present invention.
Fig. 2 is a schematic structural diagram of a display panel according to an embodiment of the present invention, and as shown in fig. 2, the display panel 100 includes a bending area AA and a non-bending area BB connected to each other; the display panel 100 includes a first film layer 101, an adhesive layer 102, and a second film layer 103 stacked in this order, wherein a stress releasing capability of the non-bending region BB is greater than that of the bending region AA.
The bending area AA is used for realizing inward bending or outward bending of the display panel 100 in the area, so as to switch the display panel 100 between a large volume and a small volume, and thus, the use requirement of portability of a user can be met. The display panel 100 includes a first film layer 101, an adhesive layer 102, and a second film layer 103 stacked in sequence, where the first film layer 101 may include a film layer structure such as a substrate, a driving circuit, and a light emitting functional layer, the second film layer 103 may include a film layer structure such as a flexible cover plate and a polarizing layer, or the first film layer 101 may include a film layer structure such as a flexible cover plate and a polarizing layer, the second film layer 103 may include a film layer structure such as a substrate, a driving circuit, and a light emitting functional layer, and a specific setting mode may be selected according to practical design requirements. The bonding layer 102 may include at least one of an optical adhesive, a pressure sensitive adhesive, an ultraviolet curable adhesive, or a liquid optical adhesive, and the specific bonding layer material may be selected according to actual design requirements, which is not limited in the embodiment of the present invention. Since the first film layer 101 and the second film layer 103 are bonded by the adhesive layer 102, in the bending process of the display panel 100, the bending area AA is bent along the direction of the second film layer pointing to the first film layer in the exemplary manner in fig. 2, and the first film layer 101 is taken as the inner side and the second film layer 103 is taken as the outer side, and at this time, since the bending radius of the first film layer 101 is smaller than that of the second film layer 103, the bending stress between the first film layer 101 and the adhesive layer 102 is different from the bending stress between the second film layer 103 and the adhesive layer 102, and therefore, in order to avoid the stress concentration of the bending area AA, the stress release capability of the non-bending area BB is greater than the stress release capability of the bending area AA, and the stress release capability is the relative displacement of the bending area AA in the non-bending state and the relative displacement of the non-bending area BB in the bending state. Fig. 3 is a schematic structural diagram of the display panel in the bending state of fig. 2, as shown in fig. 2 and 3, in the non-bending state of the display panel 100, the projection of the point a ' on the contact side of the adhesive layer 102 of the bending region AA and the first film layer 101 is completely overlapped with the projection of the point B on the contact side of the adhesive layer 102 of the first film layer 101 and the second film layer 103 due to the effect of the stress between the first film layer 101 and the second film layer 103, the projection of the point a ' on the contact side of the adhesive layer 102 of the non-bending region BB and the first film layer 101 is completely overlapped with the projection of the point B ' on the contact side of the second film layer 103, as shown in fig. 2, when the display panel 100 is bent along the direction of the second film layer 101, the relative movement between the first film layer 101, 102 and the second film layer 103 occurs due to the effect of the stress between the film layers, the point a is significantly smaller than the stress between the bending region BB and the stress between the film layers, and the stress is significantly reduced by the displacement of the point a ' on the opposite side of the bending region BB and the film layer, and the stress between the film layer 101 and the stress is significantly reduced by the stress between the point B ' on the opposite side of the bending region and the film layer 101, and the stress releasing region. In order to realize that the stress release capacity of the non-bending area BB of the display panel 100 is greater than that of the bending area AA, the displacement between the adhesive layer 102 and the first film layer 101 and the displacement between the adhesive layer 102 and the second film layer 103 can be adjusted in the bending state of the display panel 100, so that the adhesive force of the adhesive layer 102 in the bending area AA is greater than that of the adhesive layer 102 in the non-bending area BB, or the deformation amount of the adhesive layer 102 in the bending state can be adjusted, and the curing degree of the adhesive layer 102 in the bending area AA and the non-bending area BB can be changed in the preparation process, so that the elastic modulus of the adhesive layer 102 in the bending area AA is greater than that of the non-bending area BB, so that the deformation amount of the adhesive layer 102 in the bending area AA is less than that of the adhesive layer 102 in the non-bending area BB, and specific implementation can be seen in the following description.
According to the embodiment of the invention, the stress release capacity of the bending area and the non-bending area of the display panel is changed, so that the stress of the bending area is transferred to the non-bending area in the bending state of the display panel, the stress of the non-bending area can be released, the phenomenon of stripping between film layers caused by stress concentration of the bending area is avoided, and the display effect of the display panel is influenced.
As an implementation manner, fig. 4 is a schematic top view of a display panel according to an embodiment of the present invention, fig. 5 is a schematic cross-sectional structure along aa ' of fig. 4, fig. 6 is a schematic cross-sectional structure along aa ' of fig. 4, fig. 7 is a schematic cross-sectional structure along aa ' of fig. 4, fig. 8 is a schematic cross-sectional structure along aa ' of fig. 4, fig. 9 is a schematic cross-sectional structure along aa ' of fig. 4, and fig. 4, fig. 5, fig. 6, fig. 7, fig. 8, and fig. 9, where an optional non-bending region BB includes a first stress releasing structure 104, along a first direction, between the first film layer 101 and the second film layer 103, and the first direction is perpendicular to a plane of the display panel 100; the first stress relief structure 104 comprises a first opening 1041 and a first opening defining structure 1042, at least part of the adhesive layer 102 being located in the first opening 1041, the first opening defining structure 1042 being in direct contact with at least the first film layer 101.
The first stress release structure 104 is located between the first film layer 101 and the second film layer 103, the first stress release structure 104 is an additional structure, the first stress release structure 104 is provided with a first opening 1041 and a first opening defining structure 1042, and the adhesive layer 102 can be in contact with the first film layer 101 or the second film layer 103 through the first opening 1041. As shown in fig. 5, the first opening defining structure 1042 of the first stress releasing structure 104 is in direct contact with the first film layer 101 and the second film layer 103, respectively, and the adhesive layer 102 is in contact with the side of the first film layer 101 near the adhesive layer 102 and the side of the second film layer 103 near the adhesive layer 102 through the first opening 1041, respectively. As shown in fig. 6, the first opening defining structure 1042 of the first stress releasing structure 104 is in direct contact with the first film layer 101, the adhesive layer 102 is located at the first opening 1041 and is not in contact with a side of the first film layer 101 close to the adhesive layer, and the second film layer 103 is in direct contact with the adhesive layer 102 toward the side of the adhesive layer 102. As shown in fig. 7, the first opening defining structure 1042 of the first stress releasing structure 104 is in direct contact with the first film layer 101 and the second film layer 103, respectively, the adhesive layer 102 is located at the first opening 1041 and is not in contact with a side of the second film layer 103 close to the adhesive layer, and the side of the first film layer 101 facing the adhesive layer 102 is in direct contact with the adhesive layer 102. As shown in fig. 8, the first opening defining structure 1042 of the first stress relief structure 104 is in direct contact with the first film layer 101, the adhesive layer 102 is located in the first opening 1041 and is in contact with a side of the first film layer 101 close to the adhesive layer 102, and the second film layer 103 is in direct contact with the adhesive layer 102 towards the side of the adhesive layer 102. In order to further reduce the adhesion between the adhesive layer 102 and the first film layer 101 and the second film layer 102, as shown in fig. 9, a portion of the surface of the first opening defining structure 1042 of the first stress releasing structure 104 near the first film layer 101 is in direct contact with the first film layer 101, a portion of the surface of the first opening defining structure 1042 near the second film layer 102 is in direct contact with the second film layer 103 through the adhesive layer 102, a portion of the surface of the first opening defining structure 1042 near the second film layer 102 is in direct contact with the second film layer 102, only three surfaces of the first opening defining structure 1042 near the first film layer 101 are shown in contact with the first film layer 101 through the adhesive layer 102, and three surfaces of the first opening defining structure 1042 near the second film layer 103 are shown in contact with the second film layer 103 through the adhesive layer 102. The adhesive layer 102 in the first opening 1041 is not contacted with one side of the first film layer 101 close to the adhesive layer 102, and the adhesive layer 102 in the first opening 1041 is not contacted with one side of the second film layer 103 close to the adhesive layer 102, so that the contact area between the adhesive layer 102 and the first film layer 101 and the second film layer 103 is effectively reduced. As can be seen from fig. 4, 5, 6, 7, 8 and 9, by providing the first stress release structure 104, the contact area between the adhesive layer 102 and the first film layer 101 and the contact area between the adhesive layer 102 and the second film layer 103 are effectively reduced, the adhesive force of the adhesive layer 102 in the non-bending region BB is reduced, the stress release capability of the non-bending region BB is improved, the stress concentration of the bending region AA is avoided, and the display effect of the display panel 100 is ensured.
With continued reference to fig. 5, 6 and 7, optionally, the adhesive layer 102 located in the first opening 1041 is in contact with the first film layer 101 and/or the adhesive layer 102 located in the first opening 1041 is in contact with the second film layer 103.
As shown in fig. 5, the first opening defining structure 1042 of the first stress releasing structure 104 is in direct contact with the first film layer 101, the adhesive layer 102 is located in the first opening 1041, the adhesive layer 102 is in direct contact with one side of the first film layer 101, which is close to the adhesive layer 102, and the second film layer 103 is in direct contact with the adhesive layer 102 towards one side of the adhesive layer 102, which effectively reduces the adhesion force of the non-bending region BB compared to the case where the adhesive layer 102 is in direct contact with the first film layer 101 and the second film layer 103 respectively. Similarly, as shown in fig. 6 and fig. 7, by further setting the first stress releasing structure 104, the contact between the adhesive layer 102 in the first opening 1041 and the first film layer 101, or the contact between the adhesive layer 102 in the first opening 1041 and the second film layer 103, the adhesive force of the adhesive layer 102 in the non-bending region BB is effectively reduced, the stress releasing capability of the non-bending region BB is improved, the stress concentration of the bending region AA is avoided, and the display effect of the display panel 100 is ensured.
Fig. 10 is a schematic top view of another display panel according to an embodiment of the present invention, and fig. 11 is a schematic top view of another display panel according to an embodiment of the present invention, as shown in fig. 10 and 11, optionally, the first opening 1041 includes a first opening 1043 and a first second opening 1044, the first opening is located at a side of the first second opening 1044 away from the bending area AA, and a front projection area of the first opening 1043 on the first film layer 101 is smaller than a front projection area of the first second opening 1044 on the first film layer 101.
The first opening defining structure 1042 of the first stress releasing structure 104 is in direct contact with the first film layer 101 and the second film layer 103, the adhesive layer 102 is illustrated by the first opening 1041 being in contact with one side of the first film layer 101 near the adhesive layer 102 and one side of the second film layer 103 near the adhesive layer 102, respectively, in the non-bending region BB, the first opening 1041 includes a first opening 1043 and a first second opening 1044, the first opening 1043 is far away from the bending region AA, the first second opening 1044 is near the bending region AA, and in order to improve the stress releasing capability of the non-bending region BB, the forward projection area of the first opening 1043 on the first film layer 101 is smaller than the forward projection area of the first second opening 1044 on the first film layer 101, so as to achieve that the adhesive force between the adhesive layer 102 and the first film layer 101 and the second film layer 103 is gradually reduced and the stress releasing capability is gradually increased. Along the direction that the bending area AA points to the non-bending area BB, the non-bending area BB includes a first non-bending area CC and a second non-bending area DD with a unit area, the first opening 1043 is located in the first non-bending area CC, the first second opening 1044 is located in the second non-bending area DD, the orthographic projection area of the first opening 1043 on the first film layer 101 is smaller than the orthographic projection area of the first second opening 1044 on the first film layer 101, as shown in fig. 10, when the orthographic projection area of the first second opening 1044 in the unit area is unchanged, the orthographic projection area of a single first opening 1043 in the unit area is gradually reduced; as shown in fig. 11, when the orthographic projection area of the first second openings 1044 in the unit area is unchanged, the distribution density of the first second openings 1043 in the unit area is gradually reduced, so that the bonding force between the bonding layer 102 and the first film layer 101 and the bonding layer 102 and between the bonding layer 102 and the second film layer 103 in the non-bending area BB can be reduced, the stress release capability of the non-bending area BB is improved, the stress concentration of the bending area AA is avoided, and the display effect of the display panel 100 is ensured.
As an implementation manner, fig. 12 is a schematic structural view of another display panel provided by an embodiment of the present invention, fig. 13 is a schematic structural view of another display panel provided by an embodiment of the present invention, fig. 14 is a schematic structural view of another display panel provided by an embodiment of the present invention, and as shown in fig. 12, fig. 13 and fig. 14, optionally, the non-bending region BB includes a second stress relief structure 105, the second stress relief structure 105 includes a second opening 1051 and a second opening defining structure 1052, and along a first direction, the second stress relief structure 105 is located between the first film layer 101 and the second film layer 103, and the first direction is perpendicular to a plane of the display panel 100; the second opening defining structure 1052 is located on one side of the first film layer 101 near the adhesive layer 102, the second opening defining structure 1052 is integrally formed with the first film layer 101, and the adhesive layer 102 located in the second opening 1051 is not in contact with the first film layer 101; and/or the adhesive layer 102 in the second opening 1051 is not in contact with the second film layer 103.
The non-bending region BB is provided with a second stress release structure 105, where the second stress release structure 105 includes a second opening defining structure 1052 and a second opening 1051, where the second opening defining structure 1052 and the second opening 1051 are prepared by a surface etching process of the first film layer 101, so that the second opening defining structure 1052 and the first film layer 101 are integrally formed, and in order to improve the stress release capability of the non-bending region BB, as shown in fig. 12, the adhesive layer 102 located in the second opening 1051 is not in contact with the first film layer 101, i.e., the adhesive layer 102 does not cover the bottom of the second opening 1051, so that the second opening 1051 is not filled with the adhesive layer 102, and one side of the first film layer 101 near the adhesive layer 102 is in contact with the adhesive layer 102 through the second opening defining structure 1052, and one side of the second film layer 103 near the adhesive layer 102 is directly in contact with the adhesive layer 102. Similarly, as shown in fig. 13, when the adhesive layer 102 is applied on one side of the second film layer 103 and then bonded to the first film layer 101, the adhesive layer at the corresponding second opening 1051 falls into the second opening 1051 and only partially contacts the inner wall of the second opening 1051, and the adhesive layer 102 located in the second opening 1051 does not contact the second film layer 103, so that the adhesive layer 102 in the second opening 1051 does not contact the second film layer 103, and the second film layer 103 contacts the second opening defining structure 1052 only through the adhesive layer 102, thereby realizing the bonding between the first film layer 101 and the second film layer 103. Similarly, as shown in fig. 14, the adhesive layer 102 in the second opening 1051 is not in contact with both the first film layer 101 and the second film layer 103, the adhesive layer 102 is only suspended at the second opening 1051, and is partially in contact with the inner wall of the first film layer 101, and does not fill the second opening 1051, and the first film layer 101 and the second film layer 103 are in contact with the adhesive layer 102 through the second opening defining structure 1052. Therefore, in the structure formed by integrating the second opening defining structure 1052 and the first film 101, the adhesive layer 102 only stays on the surface of the second opening defining structure 1052 close to the second film 103 or is partially located on the inner wall of the first film 101, and the second opening 1051 is not filled, so that the adhesion of the non-bending region BB is effectively reduced, the stress release capability of the non-bending region BB is improved, the stress concentration of the bending region AA is avoided, and the display effect of the display panel 100 is ensured. Similarly, the second stress relief structure 105 includes a second opening 1051 and a second opening defining structure 1052, and along the first direction, the second opening defining structure 1052 may be located on a side of the second film 103 near the adhesive layer 102, the second opening defining structure 1052 is integrally formed with the second film 103, and the adhesive layer 102 located in the second opening 1051 is not in contact with the first film 101; and/or the adhesive layer 102 in the second opening 1051 is not in contact with the second film layer 103. The specific principle is the same as that of the second opening defining structure 1052 and the first film 101 formed integrally, and will not be described herein in detail.
Fig. 15 is a schematic top view of another display panel according to an embodiment of the present invention, and fig. 16 is a schematic top view of another display panel according to an embodiment of the present invention, as shown in fig. 15 and 16, optionally, the second opening defining structure 1052 includes a second first opening defining structure 1053 and a second opening defining structure 1054, the second first opening defining structure 1053 is located at a side of the second opening defining structure 1054 away from the bending area AA, and an orthographic projection area of the second first opening defining structure 1053 on the second film 103 is smaller than an orthographic projection area of the second opening defining structure 1054 on the second film 103.
The exemplary second opening defining structure 1052 of the second stress releasing structure 105 is illustrated that the first film layer 101 and the second film layer 103 are bonded by the adhesive layer 102, the adhesive layer 102 in the second opening 1051 is not in contact with the first film layer 101 and the second film layer 103, the second opening defining structure 1052 includes a second first opening defining structure 1053 and a second opening defining structure 1054, the second first opening defining structure 1053 is far away from the bending area AA, the second opening defining structure 1054 is close to the bending area AA, in order to improve the stress releasing capability of the non-bending area BB, the orthographic projection area of the second first opening defining structure 1053 on the second film layer 103 is smaller than the orthographic projection area of the second opening defining structure 1054 on the second film layer 103, so as to realize that the adhesive force between the adhesive layer 102 and the first film layer 101 and the second film layer 103 is gradually reduced toward the non-bending area BB side along the bending area AA, and the stress releasing capability is gradually increased. Along the direction of the inflection area AA pointing to the non-inflection area BB, the non-inflection area BB includes a third non-inflection area EE and a fourth non-inflection area FF that are formed in a unit area, the second first opening defining structure 1053 is located in the third non-inflection area EE, the second opening defining structure 1054 is located in the fourth non-inflection area FF, the orthographic projection area of the second first opening defining structure 1053 on the first film layer 101 is smaller than the orthographic projection area of the second opening defining structure 1054 on the first film layer 101, as shown in fig. 15, when the orthographic projection area of the second opening defining structure 1054 is exemplarily kept unchanged in the unit area, the orthographic projection area of the single second first opening defining structure 1053 in the unit area is gradually reduced; as shown in fig. 16, when the orthographic projection area of the second opening defining structure 1054 in the unit area is kept unchanged, the distribution density of the second opening defining structure 1053 in the unit area is gradually reduced, so that the bonding force between the bonding layer 102 and the first film layer 101 and the bonding layer 102 and between the bonding layer 102 and the second film layer 103 in the non-bending area BB can be reduced, the stress release capability of the non-bending area BB is improved, the stress concentration in the bending area AA is avoided, and the display effect of the display panel 100 is ensured.
On the basis of the above embodiment, fig. 17 is a schematic structural view of another display panel provided by the embodiment of the present invention, fig. 18 is a schematic structural view of another display panel provided by the embodiment of the present invention, and fig. 19 is a schematic structural view of another display panel provided by the embodiment of the present invention, as shown in fig. 17, fig. 18 and fig. 19, optionally, the bending area AA includes a protrusion 106, the bonding layer 102 covers the protrusion 106 and a side surface of the protrusion 106, the protrusion 106 is located on the surface of the first film layer 101 and integrally formed with the first film layer 101 and protrudes towards one side of the bonding layer 102, and/or the protrusion 106 is located on the surface of the second film layer 103 and integrally formed with the second film layer 103 and protrudes towards one side of the bonding layer 102.
On the basis of fig. 12, the protrusion 106 is disposed in the area of the bending area AA, the protrusion 106 is formed by preparing the first film layer 101 or the second film layer 103 through an etching process, and the surface and the side surface of the protrusion 106 are covered by the adhesive layer 102, so that the contact area between the adhesive layer 102 and the first film layer 101 or the second film layer 103 is increased, the adhesion between the bending area AA film layers is enhanced, and the peeling phenomenon between the bending area AA film layers in the bending process is reduced. As shown in fig. 17, the protrusion 106 is located on the surface of the first film layer 101, is integrally formed with the first film layer 101, and protrudes towards one side of the adhesive layer 102, so as to increase the contact area between the first film layer 101 and the adhesive layer 102; as shown in fig. 18, the protrusion 106 is located on the surface of the second film layer 103, is integrally formed with the second film layer 103, and protrudes towards one side of the adhesive layer 102, so as to increase the contact area between the second film layer 103 and the adhesive layer 102; as shown in fig. 19, the protrusions 106 are respectively located on the surface of the first film layer 101 and integrally formed with the first film layer 101, and protrude towards one side of the adhesive layer 102, and located on the surface of the second film layer 103 and integrally formed with the second film layer 103, and protrude towards one side of the adhesive layer 102, and simultaneously increase the contact area between the adhesive layer 102 and the first film layer 101 and between the adhesive layer 102 and the second film layer 103. As shown in fig. 15, 16 and 17, the protrusion 106 is disposed in the bending area AA, and the protrusion 106 is integrally formed with the first film layer 101 or the second film layer 103, and the adhesive layer 102 covers the surface and the side surface of the protrusion 106, so as to increase the contact area between the adhesive layer 102 in the bending area AA and the first film layer 101 and the second film layer 103 of the adhesive layer 102, and avoid peeling between the film layers in the bending area AA in the bending state, thereby affecting the display effect of the display panel 100.
Fig. 20 is a schematic top view of another display panel according to an embodiment of the present invention, fig. 21 is a schematic top view of a cross-sectional line along BB 'of fig. 20, fig. 22 is a schematic top view of another display panel according to an embodiment of the present invention, fig. 23 is a schematic top view of a cross-sectional line along cc' of fig. 22, and as shown in fig. 20, fig. 21, fig. 22 and fig. 23, optionally, a bending area AA includes a first sub-bending area GG and a second sub-bending area HH, the first sub-bending area GG and the second sub-bending area HH are located on the same side of a bending axis 107 of the display panel 100, the first sub-bending area GG is located on a side of the second sub-bending area HH away from the non-bending area BB, and the density of the protrusions 106 in the first sub-bending area GG is greater than the density of the protrusions 106 in the second sub-bending area HH.
In the exemplary embodiment, the protrusion 106 is integrally formed on the surface of the first film layer 101 and protrudes toward one side of the adhesive layer 102, where the bending area AA includes a bending axis 107, and a first sub-bending area GG and a second sub-bending area HH located at one side of the bending axis 107, where the first sub-bending area HH is located at one side of the second sub-bending area away from the non-bending area BB, in order to ensure that the bending axis 107 points to the direction of the non-bending area BB, in the bending area AA, the density of the protrusion 106 in the first sub-bending area GG is greater than the density of the protrusion 106 in the second sub-bending area HH, and the adhesive force between the adhesive layer 102 and the first film layer 101 and the second film layer 103 is gradually reduced, so as to avoid peeling caused by excessive bending stress near the bending axis 107. As shown in fig. 20 and 21, for the same-sized protrusions 106, the density of the protrusions 106 gradually decreases, so that the contact area of the adhesive layer 102 with the first film layer 101 gradually decreases and the adhesive force gradually decreases along the bending axis 107 toward the non-bending region BB direction; as shown in fig. 22 and 23, the density of the protrusions 106 gradually decreases, and the size of the protrusions 106 gradually decreases, so that the contact area of the adhesive layer 102 with the first film layer 101 gradually decreases along the bending axis 107 toward the non-bending region BB direction, and the adhesive force gradually decreases. By arranging the protrusions 106 in the bending area AA, the contact area between the bonding layer 102 and the first film layer 101 is increased, the bonding force between the film layers in the bending area AA is improved, the stress release capacity of the bending area AA is smaller than that of the non-bending area BB, the film layer stripping phenomenon in the bending area AA is effectively reduced, and the display effect of the display panel 100 is improved.
As another embodiment, fig. 24 is a schematic structural diagram of another display panel according to an embodiment of the present invention, as shown in fig. 24, for realizing that the stress releasing capability of the non-bending region BB is greater than that of the bending region AA. Optionally, along the direction of the bending area AA toward the non-bending area BB, the roughness of the surface of the first film layer 101 in the non-bending area BB facing the adhesive layer 102 is smaller than the roughness of the surface of the first film layer 101 in the bending area AA facing the adhesive layer 102, and by performing surface roughness treatment on the surface of the first film layer 101 in the bending area AA facing the adhesive layer 102 or performing surface roughness treatment on the surfaces of the bending area AA and the non-bending area BB, the surface roughness treatment degree of the bending area AA is greater than the surface roughness treatment degree of the non-bending area BB, so that the roughness of the surface of the first film layer 101 in the non-bending area BB facing the adhesive layer 102 is smaller than the roughness of the first film layer 101 in the bending area AA facing the surface of the adhesive layer 102, the adhesion between the first film layer 101 in the non-bending area BB and the adhesive layer 102 is smaller than the adhesion between the first film layer 101 in the bending area AA and the adhesive layer 102, and the stress release capability of the non-bending area BB is greater than the stress release capability of the non-bending area AA, the non-bending area BB is easier, and the stress release effect of the non-bending area BB is more difficult, and the display effect of the display panel 100 is ensured. Similarly, fig. 25 is a schematic structural diagram of another display panel provided in this embodiment of the present invention, as shown in fig. 25, the roughness of the surface of the second film 103 facing the adhesive layer 102 in the non-bending region BB is smaller than the roughness of the surface of the second film 103 facing the adhesive layer 102 in the bending region AA, so that the adhesion between the second film 103 and the adhesive layer 102 in the non-bending region BB is smaller than the adhesion between the second film 103 and the adhesive layer 102 in the bending region AA, the stress release capability of the non-bending region BB is larger than the stress release capability of the bending region AA, the stress release of the non-bending region BB is easier, and the peeling phenomenon of the film in the bending region AA is more difficult, thereby effectively ensuring the display effect of the display panel 100. Fig. 26 is a schematic structural diagram of another display panel provided in this embodiment of the present invention, as shown in fig. 26, along the direction of the bending region AA toward the non-bending region BB, the roughness of the surface of the first film layer 101 in the non-bending region BB toward the adhesive layer 102 is smaller than the roughness of the surface of the first film layer 101 in the bending region AA toward the adhesive layer 102, and the roughness of the surface of the second film layer 103 in the non-bending region BB toward the adhesive layer 102 is smaller than the roughness of the surface of the second film layer 103 in the bending region AA toward the adhesive layer 102, and the principle and effect thereof are the same as those of the above-mentioned roughness of the surface of the first film layer 101 in the non-bending region BB toward the adhesive layer 102, and the roughness of the surface of the first film layer 101 in the bending region AA toward the adhesive layer 102 are not repeated.
As an implementation manner, fig. 27 is a schematic structural diagram of another display panel provided by an embodiment of the present invention, and as shown in fig. 27, optionally, in a non-bending area BB, a first additional structure 108 is disposed in the adhesive layer 102, and an adhesive force of the first additional structure 108 is smaller than an adhesive force of the adhesive layer 102.
The first additional structure 108 is disposed in the adhesive layer 102 of the non-bending region BB, where the first additional structure 108 may be a non-adhesive material or a weak adhesive material, so that the adhesive force of the first additional structure 108 is smaller than that of the adhesive layer 102, and the first additional structure 108 may be discretely distributed in the adhesive layer 102 or regularly distributed in the adhesive layer 102 in a layered manner, so as to achieve the effect of reducing the adhesive force between the adhesive layer 102 and the first film layer 101 and the adhesive force between the adhesive layer 102 and the second film layer 103 in the non-bending region BB, so that the stress release capability of the non-bending region BB is greater than that of the bending region AA, thereby realizing the stress release of the bending region AA of the display panel 100 in the bending state, avoiding the peeling between the film layers of the bending region AA, and ensuring the display effect of the display panel 100.
With continued reference to fig. 27, optionally, at the non-inflection region BB, the first additional features 108 comprise non-adhesive features 1081, the non-adhesive features 1081 being disposed dispersed within the adhesive layer 102.
The first additional structure 108 may be at least one of a spherical non-adhesive structure, a square non-adhesive structure, a triangular non-adhesive structure, and an irregular non-adhesive structure, and the specific shape may be selected according to actual design requirements. For example, in fig. 27, the first additional structure 108 is shown as a spherical non-adhesive structure, and in the non-bending region BB, the non-adhesive structures 1081 are disposed in the adhesive layer 102 in a dispersed manner, so that the adhesive force between the adhesive layer 102 and the first film layer 101 and between the adhesive layer 102 and the second film layer 103 is reduced, and further the stress release capability of the non-bending region BB is improved, and the bending stress of the bending region AA is transferred to the non-bending region AA, so as to avoid the stress concentration of the bending region AA and reduce the risk of peeling between the film layers of the bending region AA.
Fig. 28 is a schematic structural diagram of another display panel provided in this embodiment of the present invention, as shown in fig. 28, further, in order to improve the stress release effect of the non-bending region BB, the volume ratio of the non-adhesive structure 1081 in the non-bending region BB may be gradually increased along the bending region AA pointing to the direction of the non-bending region BB, and the adhesion force of the adhesive layer 102 between the first film layer 101 and the second film layer 103 is gradually reduced, so that the stress release capability of the non-bending region BB is gradually increased, the stress release effect is improved, and the whole process is smooth and stable, thereby ensuring the display effect of the display panel 100.
Fig. 29 is a schematic structural view of another display panel according to an embodiment of the present invention, fig. 30 is a schematic structural view of another display panel according to an embodiment of the present invention, and fig. 31 is a schematic structural view of another display panel according to an embodiment of the present invention, as shown in fig. 29, 30 and 31, optionally, the first additional structure 108 includes at least one first sub-adhesive layer 1082, and the first sub-adhesive layer 1082 contacts the first film layer 101 along a first direction, and/or the first sub-adhesive layer 1082 contacts the second film layer 103 along a first direction perpendicular to a plane of the display panel 100.
The first additional structure 108 may be at least one first sub-adhesive layer 1082, where the first sub-adhesive layer 1082 is a weak adhesive layered structure, and the first sub-adhesive layer 1082 is disposed in the adhesive layer 102 of the non-bending region BB, so as to reduce the adhesion force between the adhesive layer 102 and the first film layer 101 and the second film layer 103, respectively. As shown in fig. 29, the first sub-adhesive layer 1082 may be in direct contact with the first film layer 101; as shown in fig. 30, the first adhesive sub-layer 1082 may be directly contacted with the second film layer 103, or as shown in fig. 31, the first additional structure 108 includes two first adhesive sub-layers 1082, where the first adhesive sub-layers 1082 are respectively directly contacted with the first film layer 101 and the second film layer 103, and as shown in fig. 29, 30 and 31, the first adhesive sub-layers 1082 are configured to enhance the stress release capability of the non-bending region BB, so as to release the stress of the bending region AA.
Further, the non-bending region BB includes a first sub-non-bending region II and a second sub-non-bending region JJ, which are connected to each other, where the first sub-non-bending region II is located at a side of the second sub-non-bending region JJ away from the bending region AA, and the number of sub-bending regions may be selected according to actual design requirements, which is not specifically limited in the embodiment of the present invention. On this basis, fig. 32 is a schematic structural diagram of another display panel provided in this embodiment of the present invention, as shown in fig. 32, the number of the first sub-adhesive layers 1082 in the first sub-non-bending region II is greater than the number of the first sub-adhesive layers 1082 in the second sub-non-bending region JJ, so that the bonding force of the middle bonding layer 102 in the second sub-non-bending region JJ is greater than the bonding force of the middle bonding layer 102 in the first sub-non-bending region II, and then the stress release capability of the first sub-non-bending region II is greater than the stress release capability of the second sub-non-bending region JJ, thereby gradually releasing the stress of the bending region AA, and the whole process is smooth and stable, so as to ensure the display effect of the display panel 100. Similarly, fig. 33 is a schematic structural diagram of another display panel provided in this embodiment of the present invention, as shown in fig. 33, the thickness of the first sub-adhesive layer 1082 in the first sub-non-bending region II is greater than the thickness of the first sub-adhesive layer 1082 in the second sub-non-bending region JJ along the direction in which the bending region AA points to the non-bending region BB, so that the bonding force of the middle adhesive layer 102 in the second sub-non-bending region JJ is greater than the bonding force of the middle adhesive layer 102 in the first sub-non-bending region II, and then the stress release capability of the first sub-non-bending region II is greater than the stress release capability of the second sub-non-bending region JJ, so as to gradually release the stress of the bending region AA.
With continued reference to fig. 2, optionally, the surface energy of the first film layer 101 in the non-bending region BB toward the side surface of the adhesive layer 102 is smaller than the surface energy of the first film layer 101 in the bending region AA toward the side surface of the adhesive layer 102, and/or the surface energy of the second film layer 103 in the non-bending region BB toward the side surface of the adhesive layer 102 is smaller than the surface energy of the second film layer 103 in the bending region AA toward the side surface of the adhesive layer 102.
The surface chemical treatment is performed on the side of the first film layer 101 facing the adhesive layer 102, and the surface energy between the first film layer 101 and the adhesive layer 102 can be changed by surface plasma treatment or chemical agent coating, so that the contact angle between the first film layer 101 and the adhesive layer 102 is increased, and the adhesive effect between the first film layer 101 and the adhesive layer 102 is reduced. At this time, the surface chemical treatment may be performed only on the surface of the first film layer 101 in the non-bending region BB facing the adhesive layer 102, and the surface chemical treatment is not performed in the bending region AA, so that the surface energy of the first film layer 101 in the non-bending region BB facing the surface of the adhesive layer 102 is smaller than the surface energy of the first film layer 101 in the bending region AA facing the surface of the adhesive layer 102, and further the adhesion between the first film layer 101 in the non-bending region BB and the adhesive layer 102 is smaller than the adhesion between the first film layer 101 in the bending region AA and the adhesive layer 102, and in the bending process of the display panel 100, the stress in the bending region AA is transferred to the non-bending region BB and is released by the non-bending region BB; or simultaneously carrying out surface chemical treatment on the surfaces of the first film layer 101 in the bending region AA and the non-bending region BB towards one side of the adhesive layer 102, wherein the surface chemical treatment degree of the bending region AA is smaller than the surface treatment degree of the non-bending region BB, so that the surface energy of the first film layer 101 in the non-bending region BB towards one side of the adhesive layer 102 is smaller than the surface energy of the first film layer 101 in the bending region AA towards one side of the adhesive layer 102, and the bonding force between the first film layer 101 in the non-bending region BB and the adhesive layer 102 is smaller than the bonding force between the first film layer 101 in the bending region AA and the adhesive layer 102, and the stress of the bending region AA is transferred to the non-bending region BB in the bending process of the display panel 100, and the stress is released by the non-bending region BB.
In the same way, the surface chemical treatment is performed on the side, facing the adhesive layer 102, of the second film layer 103, and only the non-bending region BB or both the bending region AA and the non-bending region BB can be chemically treated, so that the surface energy of the surface, facing the adhesive layer 102, of the second film layer 103 in the non-bending region BB is smaller than the surface energy of the surface, facing the adhesive layer 102, of the second film layer 103 in the bending region AA. Or simultaneously, the surface chemical treatment is performed on the side of the first film layer 101 facing the adhesive layer 102 and the surface chemical treatment is performed on the side of the second film layer 103 facing the adhesive layer 102, so that the surface energy adjustment of the first film layer 101 and the second film layer 103 can be realized, and the principle is the same as that of the surface chemical treatment performed on the side of the first film layer 101 facing the adhesive layer 102, and redundant description is not repeated.
Based on the above embodiment, the method may further include that the surface energy of the first film layer 101 in the non-bending region BB towards the surface of the adhesive layer 102 gradually decreases along the direction in which the bending region AA points to the non-bending region BB; and/or the surface energy of the second film layer 103 in the non-folded region BB toward the side surface of the adhesive layer 102 gradually decreases.
The surface chemical treatment is illustrated on one side of the first film layer 101 facing the adhesive layer 102 in the non-bending area BB, the surface chemical treatment is performed on one side of the first film layer 101 facing the adhesive layer 102 in the bending area AA, so that the surface chemical treatment degree is gradually enhanced, the surface energy of one side of the first film layer 101 facing the adhesive layer 102 is gradually weakened along the direction of the bending area AA facing the non-bending area BB, the adhesive force between the first film layer 101 and the adhesive layer 102 is gradually reduced, the stress release capability of the non-bending area BB is gradually enhanced, the stress release effect is improved, the whole process is smooth and stable, and the display effect of the display panel 100 is further ensured. For realizing the gradual reduction of the surface energy of the second film layer 103 facing the side surface of the adhesive layer 102 in the non-bending region BB and simultaneously realizing the gradual reduction of the surface energy of the first film layer 101 facing the side surface of the adhesive layer 102 and the side surface of the second film layer 103 facing the adhesive layer 102 in the non-bending region BB, the implementation principle is the same as that of the surface chemical treatment of the side of the first film layer 101 facing the adhesive layer 102 in the non-bending region BB, and will not be repeated herein.
Fig. 34 is a schematic structural diagram of a display device according to an embodiment of the present invention, where the display device includes any one of the display panels provided in the foregoing embodiments. Illustratively, as shown in fig. 34, the display device 200 includes a display panel 100. Therefore, the display device also has the advantages of the display panel in the above embodiment, and the same points can be understood by referring to the explanation of the display panel, and the description thereof will not be repeated.
The display device 200 provided in the embodiment of the present invention may be a mobile phone as shown in fig. 34, or any electronic product with a display function, including but not limited to the following categories: television, notebook computer, desktop display, tablet computer, digital camera, smart bracelet, smart glasses, vehicle-mounted display, industrial control equipment, medical display screen, touch interactive terminal, etc., which is not particularly limited by the embodiment of the invention.
Note that the above is only a preferred embodiment of the present invention and the technical principle applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, and that various obvious changes, rearrangements, combinations, and substitutions can be made by those skilled in the art without departing from the scope of the invention. Therefore, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.
Claims (12)
1. A display panel, comprising a bending region and a non-bending region connected with each other;
the display panel comprises a first film layer, a bonding layer and a second film layer which are sequentially stacked, wherein the stress release capacity of the non-bending region is larger than that of the bending region, and the stress release capacity is the relative displacement of the bending region in a non-bending state and a bending state and the relative displacement of the non-bending region in a non-bending state and a bending state;
the non-bending region comprises a second stress release structure, the second stress release structure comprises a second opening and a second opening definition structure, the second opening definition structure is positioned between two adjacent second openings, the second stress release structure is positioned between the first film layer and the second film layer along a first direction, and the first direction is perpendicular to the plane of the display panel;
the second opening defining structure is positioned on one side of the first film layer close to the bonding layer, the second opening defining structure and the first film layer are integrally formed,
the adhesive layer in the second opening is not in contact with the first film layer; and/or the number of the groups of groups,
The adhesive layer in the second opening is not in contact with the second film layer.
2. The display panel of claim 1, wherein the non-bending region comprises a first stress relief structure located between the first film layer and the second film layer along a first direction, the first direction being perpendicular to a plane in which the display panel is located;
the first stress relief structure comprises a first opening and a first opening definition structure, wherein the first opening definition structure is positioned between adjacent first openings, the first opening definition structure is a non-bonding structure, at least part of the bonding layer is positioned in the first opening, and the first opening definition structure is at least in direct contact with the first film layer.
3. The display panel according to claim 2, wherein the adhesive layer in the first opening is in contact with the first film layer and/or the adhesive layer in the first opening is in contact with the second film layer.
4. The display panel of claim 2, wherein the first opening comprises a first opening and a first second opening, the first opening is located at a side of the first second opening away from the bending region, and an orthographic projection area of the first opening on the first film layer is smaller than an orthographic projection area of the first second opening on the first film layer.
5. The display panel of claim 1, wherein the second opening defining structure comprises a second first opening defining structure and a second opening defining structure, the second first opening defining structure being located on a side of the second opening defining structure away from the bending region, an orthographic projection area of the second first opening defining structure on the second film layer being smaller than an orthographic projection area of the second opening defining structure on the second film layer.
6. The display panel of claim 1, wherein the inflection region comprises a protrusion, the adhesive layer covers the protrusion and a side of the protrusion,
the protrusions are located on the surface of the first film layer, integrally formed with the first film layer and protruding towards one side of the bonding layer, and/or the protrusions are located on the surface of the second film layer, integrally formed with the second film layer and protruding towards one side of the bonding layer.
7. The display panel of claim 6, wherein the inflection region includes a first sub-inflection region and a second sub-inflection region, the first sub-inflection region being located on the same side of the inflection axis of the display panel as the second sub-inflection region, the first sub-inflection being located on a side of the second sub-inflection region remote from the non-inflection region, the density of the protrusions in the first sub-inflection region being greater than the density of the protrusions in the second sub-inflection region.
8. The display panel according to claim 1, wherein a first additional structure is provided in the adhesive layer in the non-bending region, the adhesive force of the first additional structure being smaller than the adhesive force of the adhesive layer.
9. The display panel of claim 8, wherein the first additional structure comprises a non-adhesive structure in the non-bending region, the non-adhesive structure being disposed dispersed in the adhesive layer.
10. The display panel of claim 8, wherein the first additional structure comprises at least one first sub-adhesive layer,
in a first direction, the first sub-adhesive layer is in contact with the first film layer and/or the first sub-adhesive layer is in contact with the second film layer,
the first direction is perpendicular to the plane of the display panel.
11. The display panel according to claim 1, wherein a surface energy of the first film layer in the non-bending region toward the adhesive layer side surface is smaller than a surface energy of the first film layer in the bending region toward the adhesive layer side surface; and/or the surface energy of the second film layer facing the side surface of the bonding layer in the non-bending area is smaller than the surface energy of the second film layer facing the side surface of the bonding layer in the bending area.
12. A display device comprising the display panel of any one of claims 1-11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111448401.XA CN114170901B (en) | 2021-11-30 | 2021-11-30 | Display panel and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111448401.XA CN114170901B (en) | 2021-11-30 | 2021-11-30 | Display panel and display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114170901A CN114170901A (en) | 2022-03-11 |
| CN114170901B true CN114170901B (en) | 2024-04-16 |
Family
ID=80482329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111448401.XA Active CN114170901B (en) | 2021-11-30 | 2021-11-30 | Display panel and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114170901B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117652224A (en) * | 2022-06-30 | 2024-03-05 | 京东方科技集团股份有限公司 | Display substrate, display module and display device |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003086352A (en) * | 2001-09-10 | 2003-03-20 | Semiconductor Energy Lab Co Ltd | Light emitting device and electronic device |
| JP2004074753A (en) * | 2002-08-12 | 2004-03-11 | Keizo Yamaguchi | Formed sl sheet adhered to vertical surface of underground structure to reduce shear stress |
| JP2008071852A (en) * | 2006-09-13 | 2008-03-27 | Sony Corp | Manufacturing method of semiconductor device |
| WO2016161878A1 (en) * | 2015-04-07 | 2016-10-13 | 京东方科技集团股份有限公司 | Flexible substrate and manufacturing method therefor, flexible display panel, flexible display device |
| CN106228910A (en) * | 2016-09-26 | 2016-12-14 | 京东方科技集团股份有限公司 | Flexible display panels and manufacture method thereof and flexible display apparatus |
| CN106783745A (en) * | 2016-12-19 | 2017-05-31 | 中国科学院半导体研究所 | Extending flexible inorganic opto-electronic device and preparation method thereof |
| CN107230429A (en) * | 2017-06-08 | 2017-10-03 | 武汉天马微电子有限公司 | Flexible module and flexible display panels |
| CN109523922A (en) * | 2018-12-14 | 2019-03-26 | 云谷（固安）科技有限公司 | A kind of flexible die group, display panel and display device |
| CN109859642A (en) * | 2018-12-17 | 2019-06-07 | 上海天马微电子有限公司 | A kind of display panel and display device |
| CN110189638A (en) * | 2019-06-28 | 2019-08-30 | 武汉天马微电子有限公司 | Display module and display device |
| CN111627324A (en) * | 2019-02-27 | 2020-09-04 | 上海和辉光电有限公司 | Flexible display device and preparation method thereof |
| WO2020199306A1 (en) * | 2019-03-29 | 2020-10-08 | 武汉华星光电半导体显示技术有限公司 | Display panel and display panel fabrication method |
| CN113687461A (en) * | 2021-08-23 | 2021-11-23 | 京东方科技集团股份有限公司 | Polarizing plate, folding module and display device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102085961B1 (en) * | 2013-12-24 | 2020-03-06 | 엘지디스플레이 주식회사 | Flexible organic light emitting display and method of manufacturing the same |
-
2021
- 2021-11-30 CN CN202111448401.XA patent/CN114170901B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003086352A (en) * | 2001-09-10 | 2003-03-20 | Semiconductor Energy Lab Co Ltd | Light emitting device and electronic device |
| JP2004074753A (en) * | 2002-08-12 | 2004-03-11 | Keizo Yamaguchi | Formed sl sheet adhered to vertical surface of underground structure to reduce shear stress |
| JP2008071852A (en) * | 2006-09-13 | 2008-03-27 | Sony Corp | Manufacturing method of semiconductor device |
| WO2016161878A1 (en) * | 2015-04-07 | 2016-10-13 | 京东方科技集团股份有限公司 | Flexible substrate and manufacturing method therefor, flexible display panel, flexible display device |
| CN106228910A (en) * | 2016-09-26 | 2016-12-14 | 京东方科技集团股份有限公司 | Flexible display panels and manufacture method thereof and flexible display apparatus |
| CN106783745A (en) * | 2016-12-19 | 2017-05-31 | 中国科学院半导体研究所 | Extending flexible inorganic opto-electronic device and preparation method thereof |
| CN107230429A (en) * | 2017-06-08 | 2017-10-03 | 武汉天马微电子有限公司 | Flexible module and flexible display panels |
| CN109523922A (en) * | 2018-12-14 | 2019-03-26 | 云谷（固安）科技有限公司 | A kind of flexible die group, display panel and display device |
| CN109859642A (en) * | 2018-12-17 | 2019-06-07 | 上海天马微电子有限公司 | A kind of display panel and display device |
| CN111627324A (en) * | 2019-02-27 | 2020-09-04 | 上海和辉光电有限公司 | Flexible display device and preparation method thereof |
| WO2020199306A1 (en) * | 2019-03-29 | 2020-10-08 | 武汉华星光电半导体显示技术有限公司 | Display panel and display panel fabrication method |
| CN110189638A (en) * | 2019-06-28 | 2019-08-30 | 武汉天马微电子有限公司 | Display module and display device |
| CN113687461A (en) * | 2021-08-23 | 2021-11-23 | 京东方科技集团股份有限公司 | Polarizing plate, folding module and display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114170901A (en) | 2022-03-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11656702B2 (en) | Display assembly and method of manufacturing the same, and display apparatus | |
| US20200272204A1 (en) | Flexible cover plate, flexible display apparatus, and flexible terminal product | |
| US8920904B2 (en) | Touch panel and method of producing the same | |
| JP2008102968A (en) | Touch panel | |
| KR20010033970A (en) | Liquid crystal display of touch input type, and method of manufacture | |
| CN111369897B (en) | Foldable display screen and foldable electronic equipment | |
| CN111584743A (en) | Display panel and display device | |
| CN111029393A (en) | Display panel and terminal equipment | |
| CN114170901B (en) | Display panel and display device | |
| CN111653203B (en) | Flexible display panel and display device | |
| CN112562496B (en) | Display module and electronic equipment | |
| CN111047980A (en) | Flexible display panel and terminal equipment | |
| US20150077648A1 (en) | Touch panel | |
| CN112396964A (en) | Display panel and display device | |
| CN111508349B (en) | Display panel, manufacturing method of display panel and electronic equipment | |
| CN113345938B (en) | Display panel, strengthening method thereof and display device | |
| CN112565485A (en) | Display module, manufacturing method thereof and electronic equipment | |
| CN116092382A (en) | Foldable film structure, preparation method thereof, display panel and display device | |
| CN115132088A (en) | Display panel and display device | |
| TWM572495U (en) | Touch sensor and touch panel thereof | |
| CN114038315A (en) | Display panel and display device | |
| CN105718095A (en) | Touch display device | |
| KR102108842B1 (en) | Touch Panel | |
| JP4558784B2 (en) | Touch panel | |
| KR102228447B1 (en) | Display device amd method of fabricating thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |