CN109004100B - Flexible display device - Google Patents
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- CN109004100B CN109004100B CN201710431066.XA CN201710431066A CN109004100B CN 109004100 B CN109004100 B CN 109004100B CN 201710431066 A CN201710431066 A CN 201710431066A CN 109004100 B CN109004100 B CN 109004100B
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/84—Passivation; Containers; Encapsulations
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
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Abstract
The present invention provides a flexible display device comprising: the multilayer functional layer and at least one adhesive layer for bonding the functional layer, wherein the adhesive layer comprises a central area and an edge area surrounding the central area, a plurality of protrusions arranged in a patterning mode are arranged on one surface of the central area, and a stress deformation gap is formed between every two adjacent protrusions; the gaps are communicated with each other to form a plurality of bending stress channels which are parallel to each other in at least one direction. The invention solves the problem that the stress of each point of the adhesive layer is different when the adhesive layer is bent, so that the adhesive layer generates different elongation or compression, thereby causing the breakage of the adhesive layer or separating each attached material, so that the force of the adhesive layer is mainly dispersed from the interval of the adhesive layer when the adhesive layer is bent, and the bending performance of the device is improved.
Description
Technical Field
The invention relates to the field of OLED panel manufacturing processes, in particular to a flexible display device.
Background
Nowadays, flexible electronics and flexible displays have become a research hotspot in recent years; flexible display electronic products with fixed curved surfaces, which are Flexible, foldable and even rollable, including Flexible thin film transistor liquid crystal displays (Flexible TFT-LCDs), Flexible organic light emitting displays (Flexible OLEDs), and the like, are becoming the most promising high-tech industries. Many mobile phone panel manufacturers at home and abroad invest huge amounts of related research and verification to strive for the technology and business first-chance of the flexible light-emitting device.
Taking an existing flexible light emitting device as an example, the flexible light emitting device includes a flexible substrate, a driving light emitting layer (TFT/OLED), a polarizer, a touch panel, a cover plate, and the like, so as to ensure normal use of the display device. Generally, materials such as a polarizer, a touch screen, and a cover plate are bonded to a device in the form of an adhesive layer.
For flexible OLED devices, bending is an important criterion. Since the force applied to different portions during bending is different, the adhesive layer is likely to be broken or displaced, which may cause separation of the bonding material.
Disclosure of Invention
The invention aims to provide a flexible display device, which solves the problem that the stress of each point of an adhesive layer is different when the adhesive layer is bent, so that the adhesive layer generates different elongation or compression, thereby causing the fracture of the adhesive layer or separating each attached material, so that the force of the adhesive layer is mainly dispersed from the interval of the adhesive layer when the adhesive layer is bent, and the bending performance of the device is improved.
According to an aspect of the present invention, there is provided a flexible display device including: the multilayer functional layer and at least one adhesive layer for bonding the functional layer, wherein the adhesive layer comprises a central area and an edge area surrounding the central area, a plurality of protrusions arranged in a patterning mode are arranged on one surface of the central area, and a stress deformation gap is formed between every two adjacent protrusions; the gaps are communicated with each other to form a plurality of bending stress channels which are parallel to each other in at least one direction.
Preferably, the protrusions have a central region bottom surface connected to the adhesive layer and a top surface facing away from the adhesive layer, the bottom surface of the protrusions having a larger area than the top surface of the protrusions; and the side surface of the protrusion is provided with an outward convex cambered surface, the outward convex cambered surface is connected with the bottom surface and the top surface of the protrusion, and the outward convex cambered surface extends along the direction of the bending stress channel.
Preferably, the protrusions comprise strip-shaped protrusions arranged in parallel and/or island-shaped protrusions arranged in a matrix.
Preferably, the protrusions between adjacent gaps have a first width, the gaps between adjacent protrusions have a second width, and the first width is greater than or equal to the second width.
Preferably, the width of the gap is in the range of 10nm to 500 nm.
Preferably, the depth of the gap ranges from 5um to 60 um.
Preferably, the thickness of the adhesive layer ranges from 10um to 100 um.
Preferably, the width of the edge region is greater than or equal to 1000 nm.
Preferably, the protrusion is integrally formed with the adhesive layer.
According to another aspect of the present invention, there is also provided a flexible display device including:
a flexible substrate;
the driving light-emitting layer is formed on one side of the flexible substrate;
the polaroid is formed on one side, away from the flexible substrate, of the driving light-emitting layer;
the touch screen is formed on one side, away from the driving light-emitting layer, of the polarizer;
the cover plate is formed on one side, away from the polaroid, of the touch screen;
bonding layers are respectively arranged between the driving light-emitting layer and the polaroid, between the polaroid and the touch screen and between the touch screen and the cover plate; the bonding layers respectively comprise a central area and an edge area surrounding the central area, a plurality of protrusions arranged in a patterning mode are arranged on one surface, away from the flexible substrate, of the central area, and a stress deformation gap is formed between every two adjacent protrusions; the gaps are communicated with each other to form a plurality of bending stress channels which are parallel to each other in at least one direction.
Preferably, the protrusions have a central region bottom surface connected to the adhesive layer and a top surface facing away from the adhesive layer, the bottom surface of the protrusions having a larger area than the top surface of the protrusions; and the side surface of the protrusion is provided with an outward convex cambered surface, the outward convex cambered surface is connected with the bottom surface and the top surface of the protrusion, and the outward convex cambered surface extends along the direction of the bending stress channel.
Preferably, the protrusions comprise strip-shaped protrusions arranged in parallel and/or island-shaped protrusions arranged in a matrix.
Preferably, the protrusions between adjacent gaps have a first width, the gaps between adjacent protrusions have a second width, and the first width is greater than or equal to the second width.
Preferably, the protrusion is integrally formed with the adhesive layer.
In view of the above, the flexible display device of the present invention improves the problem that the adhesive layer is subjected to different stresses at different points during bending, which causes different elongations or compressions of the adhesive layer, thereby causing the adhesive layer to break or separating the bonding materials, so that the adhesive layer disperses the forces mainly from the gaps between the adhesive layer during bending, thereby improving the bending performance of the device. Meanwhile, the overall adhesive force of the adhesive layer can be adjusted by the interval size of the patterns, so that the adhesive layer has proper and good fitting performance, and the pattern interval size, the pattern style and the like of the adhesive layer can be changed within a certain range.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a cross-sectional view of a flexible organic light emitting device of the present invention;
FIG. 2 is a cross-sectional view of a flexible organic light emitting device of the present invention in a bent state;
FIG. 3 is an enlarged schematic cross-sectional view of a first adhesive layer structure in a flexible organic light emitting device of the present invention;
FIG. 4 is an enlarged schematic view of a cross-section of a second adhesive layer structure in a flexible organic light emitting device of the present invention;
FIG. 5 is an enlarged schematic cross-sectional view of a third adhesive layer structure in a flexible organic light emitting device of the present invention;
FIG. 6 is an enlarged partial schematic view of FIG. 5;
FIG. 7 is a cross-sectional view illustrating a bent state of a third adhesive layer structure in a flexible organic light emitting device according to the present invention;
FIG. 8 is an enlarged partial schematic view of FIG. 7;
FIG. 9 is a schematic layout view of a fourth adhesive layer structure in a flexible organic light emitting device according to the present invention;
FIG. 10 is a schematic layout diagram of a fifth bonding layer structure in a flexible organic light emitting device according to the present invention;
FIG. 11 is a schematic layout diagram of a sixth bonding layer structure in a flexible organic light emitting device according to the present invention; and
fig. 12 is a schematic layout diagram of a seventh adhesive layer structure in the flexible organic light emitting device of the present invention.
Reference numerals
1 Flexible substrate
2 driving light emitting layer
31 first adhesive layer
32 second adhesive layer
33 third adhesive layer
4 polarizer
5 touch screen
6 cover plate
71 strip-shaped protrusion
72 bending stress channel
73 bending stress channel
74 strip-shaped protrusion
741 bottom surface
742 top surface
743 convex cambered surface
75 bending stress channel
76 island-shaped protrusions
77 bending stress channel
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their repetitive description will be omitted.
The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to provide a thorough understanding of embodiments of the invention. One skilled in the relevant art will recognize, however, that the invention may be practiced without one or more of the specific details, or with other methods, components, materials, and so forth. In some instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring the invention.
The invention relates to a flexible display device, which comprises a plurality of functional layers and at least one bonding layer for bonding the functional layers. The functional layer may be a TFT layer, an OLED layer, a polarizing layer, a touch screen, a cover plate, etc., but is not limited thereto. The bonding layer comprises a central area and an edge area surrounding the central area, a plurality of protrusions arranged in a patterning mode are arranged on one surface of the central area, and a stress deformation gap is formed between every two adjacent protrusions; the gaps are communicated with each other to form a plurality of bending stress channels which are parallel to each other in at least one direction. Any one of the adhesive layers in the flexible display device may be an adhesive layer structure having a bending stress path in the present invention. The protrusion has a central region bottom surface connected to the adhesive layer and a top surface facing away from the adhesive layer, the bottom surface of the protrusion having an area greater than the top surface of the protrusion; the side surface of the protrusion is provided with an outward convex cambered surface, the outward convex cambered surface is connected with the bottom surface and the top surface of the protrusion, and the outward convex cambered surface extends along the direction of the bending stress channel, but not limited to this. The protrusions include, but are not limited to, stripe-shaped protrusions arranged in parallel and/or island-shaped protrusions arranged in a matrix. The protrusions between adjacent gaps have a first width, the gaps between adjacent protrusions have a second width, and the first width is greater than or equal to the second width. The protrusion is integrally formed with the adhesive layer, but not limited thereto. In order to solve the problem that the stress of each point of the adhesive layer is different when the adhesive layer is bent, so that the adhesive layer generates different elongation or compression, and the adhesive layer is broken or the laminated materials are separated, the adhesive layer is patterned. The adhesive layer is caused to dissipate forces primarily from the spaces of the adhesive layer upon bending, in accordance with the stress concentration effect. Meanwhile, the size of the interval of the patterns can adjust the overall adhesive force of the adhesive layer, so that the adhesive layer has proper and good fitting property. The pattern interval size, pattern, etc. of the adhesive layer may be changed within a certain range here.
Fig. 1 is a cross-sectional view of a flexible organic light emitting device of the present invention. Fig. 2 is a cross-sectional view of a bent state of the flexible organic light emitting device of the present invention. Fig. 3 is an enlarged schematic view of a cross section of a first adhesive layer structure in the flexible organic light emitting device of the present invention. As shown in fig. 1 to 3, the flexible organic light emitting device of the present invention includes: the display device comprises a flexible substrate 1, a driving light-emitting layer 2, a polarizer 4, a touch screen 5 and a cover plate 6. The driving light emitting layer 2 is formed on one side of the flexible substrate 1, the polarizer 4 is formed on one side, away from the flexible substrate 1, of the driving light emitting layer 2, the touch screen 5 is formed on one side, away from the driving light emitting layer 2, of the polarizer 4, and the cover plate 6 is formed on one side, away from the polarizer 4, of the touch screen 5. The flexible substrate 1 in the present invention may be a polyimide material, but is not limited thereto. An adhesive layer 31 is arranged between the driving light emitting layer 2 and the polarizer 4, an adhesive layer 32 is arranged between the polarizer 4 and the touch screen 5, and an adhesive layer 33 is arranged between the touch screen 5 and the cover plate 6. Each of the adhesive layer 31, the adhesive layer 32, and the adhesive layer 33 includes a central region and a rim region surrounding the central region, and a plurality of protrusions arranged in a pattern are provided on a surface of the central region facing away from the flexible substrate 1. In this embodiment, the protrusions are bar-shaped protrusions 71 arranged in parallel. A gap of stress deformation is formed between the adjacent strip-shaped protrusions 71; the plurality of gaps are interconnected to form a plurality of bend stress channels 72 parallel to each other in at least one direction. The driving light-emitting layer 2 in the invention is a mixed layer of the TFT back plate and the OLED light-emitting device, and is not described herein again. The present invention patterns the adhesive layer to distribute forces primarily from the bond line spacing during bending of the adhesive layer based on stress concentration effects. The problem that materials attached through the adhesive layer are broken due to uneven stress of the adhesive layer when the materials are bent to influence separation of the materials can be improved.
Taking the adhesive layer 31 as an example, in the embodiment, the bar-shaped protrusions 71 between adjacent gaps have a first width W, the gaps between adjacent bar-shaped protrusions 71 have a second width Y, and the first width W is greater than or equal to the second width Y. The strip-like projections 71 are integrally formed with the adhesive layer 31. The second width Y of the gap 1 ranges from 10nm to 500 nm. The depth D of the gap ranges from 5um to 60 um. The total thickness H of the adhesive layer ranges from 10um to 100 um. Because the colloid interval is in the nanometer level, the interval width between the middle position and the edge position of the screen does not have special change, but the colloid cannot be hollowed out at the 1000nm position of the edge position of the screen and needs the existence of the colloid, so the width of the edge area in the embodiment is greater than or equal to 1000nm, but not limited to this.
Because one side of the bonding layer 31 is provided with a plurality of mutually parallel bending stress channels 72, each bending stress channel 72 close to the bending area bears the deformation tension generated in the area, so that the tensile stress received by the bonding layer 31 during bending is dispersed and relieved, the bonding layer 31 has proper and good bonding performance, the separation of bonding materials caused by the fracture, displacement and the like of the bonding layer due to the different forces received by different parts during bending is avoided, and the internal stress of the flexible organic light-emitting device with a multilayer structure to be bent is greatly improved.
The method of forming the stripe-shaped protrusions 71 and the gaps on the adhesive layer 31 in the present invention may be one of the following two methods:
the first method comprises the following steps: coating the surface of a PET (polyethylene terephthalate, chemical formula is COC6H4COOCH2CH 2O; short for PET) substrate with glue with required thickness (for example, 50um), and curing and molding. A mask plate is selected, a pattern to be formed is covered, and the area which is not covered by the mask plate is the position where the glue needs to be removed to form an interval. Coating removable curing glue agent on the mask plate, and finally cleaning the glue pattern at intervals by using a blower to obtain the bonding layer with the strip-shaped protrusions 71 and the gaps (bending stress channels 72).
In the second method, a mask plate with a gap to the opening of the final desired pattern is selected and placed on the surface of the PET substrate. And (4) carrying out overall gluing, coating glue at the opening of the mask plate on the surface of the PET, and gluing at intervals without glue. And (5) curing and forming. The patterned bendable glue with the required interval is obtained, and finally the bonding layer with the strip-shaped protrusions 71 and the gaps (bending stress channels 72) is obtained.
Fig. 4 is an enlarged schematic view of a cross section of a second adhesive layer structure in the flexible organic light emitting device of the present invention. In a preferred embodiment, as shown in fig. 4, a plurality of shallow narrow bending stress channels 72 and a plurality of deep wide bending stress channels 73 with different widths and different depths may be provided on the adhesive layer 31, and the bending stress channels 72 and the bending stress channels 73 may be parallel to each other to optimize the strength of the adhesive layer 31 itself, and are not limited to the single bar-shaped protrusion 71 and the size matching of the gap. The bending stress channel is adjusted according to different requirements and specific positions of the bending stress channel on the bonding layer 31. On the basis, the technical scheme that the bending stress channels with different sizes are matched with each other also falls into the protection scope of the invention.
Fig. 5 is an enlarged schematic view of a cross section of a third adhesive layer structure in the flexible organic light emitting device of the present invention. Fig. 6 is a partially enlarged schematic view of fig. 5. As shown in fig. 5 and 6, in one modification, in order to further improve the effect of the adhesive layer differentiation stress when being bent, the shape of the protrusion is optimally improved. The adhesive layer 31 is formed on the driving light emitting layer 2, and the strip-shaped protrusion 74 of the adhesive layer 31 has a bottom 741 connected to the central region of the adhesive layer 31 and a top 742 facing away from the adhesive layer 31, and the top 742 contacts the polarizer 4. The area of the bottom surface 741 of the bar-shaped protrusion 74 is larger than the area of the top surface 742 of the bar-shaped protrusion 74; the side surface of the strip-shaped protrusion 74 is provided with an outer convex cambered surface 743, the outer convex cambered surface 743 connects the bottom surface 741 and the top surface 742 of the strip-shaped protrusion 74, and the outer convex cambered surface 743 extends along the direction of the bending stress channel 75.
Fig. 7 is a sectional view illustrating a bent state of a third adhesive layer structure in a flexible organic light emitting device according to the present invention. Fig. 8 is a partially enlarged schematic view of fig. 7. As shown in fig. 7 and 8, when the bending is performed, a large deformation force (several times of the deformation force at the peripheral strip-shaped protrusion 74) is applied to the strip-shaped protrusion 74 where the stress is most concentrated (the center of the bending), and in addition to the deformation and dispersion stress of the bending stress channel 75, the strip-shaped protrusion 74 is deformed by squeezing, and the convex arc surfaces 743 on both sides in the cross section of the strip-shaped protrusion 74 move along with the tendency of the bending. Along with the bending, the convex cambered surfaces 743 on the two sides of the strip-shaped protrusion 74 are gradually attached to the polarizer 4, so that the contact area between the strip-shaped protrusion 74 and the polarizer 4 is gradually increased, the pressure of the contact surface between the strip-shaped protrusion 74 and the polarizer 4 is reduced, the stress relation between the strip-shaped protrusion 74 and the polarizer 4 is improved, and the most stress concentrated part of the polarizer 4 is effectively prevented from being broken, shifted and the like. After being released from the bent state, the flexible organic light emitting device returns to the planar state, and the evagination surfaces 743 of the strip-shaped protrusions 74 are separated from the polarizer 4, and return to the normal state (as shown in fig. 5 and 6). The conventional rectangular stripe-shaped protrusion 74, however, does not have a structure for enlarging the contact area with other contact layers by deformation, and is liable to crack at the center of the bend where the stress is most concentrated. The structure is not limited to be used only in the adhesive layer 31 between the driving light emitting layer 2 and the polarizer 4, and may be other adhesive layers, which are not described herein again.
In another modification, a plurality of bending stress channels in different directions are provided in the adhesive layer 31 in order to cope with bending in at least two different directions. The protrusions of the adhesive layer 31 are no longer strip-shaped but are island-shaped protrusions 76 arranged in a matrix, which are integrally formed with the adhesive layer 31. The bending stress channels 77 in different directions can respectively cope with the damage of bending in multiple directions to the flexible display device, so that the service life and the application range of the flexible display device are prolonged.
Fig. 9 is a schematic layout view of a fourth bonding layer structure in the flexible organic light emitting device of the present invention. As shown in fig. 9, the arrangement of the protrusions may be a matrix arrangement, the protrusions of the matrix arrangement may form two directions of bending stress channels 77, an included angle between the two directions of bending stress channels 77 is 90 °, and the directions of the bending stress channels 77 are parallel to the length direction and the width direction of the flexible display device, respectively, so as to cope with two different bending directions. The two kinds of bending stress channels 77 between the protrusions can greatly improve the internal stress of the flexible organic light emitting device of the multi-layered structure corresponding to the bending in two directions. On the basis, the scheme that three bending stress channels in different directions, four bending stress channels in different directions, five bending stress channels in different directions and the like are arranged through gaps in different directions between the island-shaped protrusions 76 also falls into the protection scope of the invention.
Fig. 10 is a schematic layout diagram of a fifth bonding layer structure in the flexible organic light emitting device according to the present invention. As shown in fig. 10, the arrangement of the protrusions may be an inclined matrix arrangement, the protrusions in the matrix arrangement may form two directions of bending stress channels 77, the two directions of bending stress channels 77 are distributed with an included angle of 90 ° therebetween, and the directions of the bending stress channels 77 are not parallel to the length direction and the width direction of the flexible display device, but are inclined to the length direction and the width direction, so as to meet different bending requirements.
Fig. 11 is a schematic layout diagram of a fifth bonding layer structure in the flexible organic light emitting device according to the present invention. As shown in fig. 11, the protrusions may be arranged in a honeycomb manner, and the protrusions arranged in the honeycomb manner may form three-directional bending stress channels 77, and the three-directional bending stress channels 77 are distributed at an interval angle of 60 ° therebetween, so as to correspond to three different bending directions.
Fig. 12 is a schematic layout diagram of a sixth bonding layer structure in the flexible organic light emitting device according to the present invention. As shown in fig. 12, the arrangement of the protrusions may form bending stress channels 77 arranged in a shape of a Chinese character 'mi', and the bending stress channels 77 arranged in four directions are distributed at an interval of an included angle of 45 ° so as to correspond to four different bending directions.
In summary, the flexible display device of the invention improves the problem that the adhesive layer generates different elongation or compression when the adhesive layer is subjected to different forces at different points during bending, so that the adhesive layer is broken or the bonding materials are separated, so that the force of the adhesive layer is mainly dispersed from the intervals of the adhesive layer during bending, and the bending performance of the device is improved. Meanwhile, the overall adhesive force of the adhesive layer can be adjusted by the interval size of the patterns, so that the adhesive layer has proper and good fitting performance, and the pattern interval size, the pattern style and the like of the adhesive layer can be changed within a certain range.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention.
Claims (12)
1. A flexible display device comprising a plurality of functional layers and at least one adhesive layer adhering said functional layers, characterized in that: the adhesive layer comprises a central area and an edge area surrounding the central area, a plurality of protrusions arranged in a patterned mode are arranged on one surface of the central area, and a stress deformation gap is formed between every two adjacent protrusions; the gaps are communicated with each other to form a plurality of bending stress channels which are parallel to each other in at least one direction;
the protrusions have a central region bottom surface connected to the adhesive layer and a top surface facing away from the adhesive layer, the bottom surface area of the protrusions being greater than the top surface area of the protrusions; the side surface of the protrusion is provided with an outward convex cambered surface, the outward convex cambered surface is connected with the bottom surface and the top surface of the protrusion, and the outward convex cambered surface extends along the direction of the bending stress channel;
along with the bending, the convex cambered surface is gradually attached to the functional layer, the contact area between the strip-shaped protrusions and the functional layer is gradually increased, and the pressure intensity of the contact surface between the strip-shaped protrusions and the functional layer is reduced.
2. A flexible display device as claimed in claim 1, wherein the protrusions comprise parallel arranged stripe-like protrusions and/or matrix arranged island-like protrusions.
3. A flexible display device as claimed in claim 1 or 2, wherein the protrusions between adjacent said gaps have a first width and the gaps between adjacent said protrusions have a second width, said first width being equal to or greater than said second width.
4. A flexible display device as claimed in claim 3, wherein the width of the gap is in the range 10nm to 500 nm.
5. A flexible display device as claimed in claim 3, wherein the depth of the gap is in the range of 5um to 60 um.
6. The flexible display device of claim 1, wherein the adhesive layer has a thickness in a range of 10um to 100 um.
7. The flexible display device of claim 1, wherein the width of the edge region is 1000nm or greater.
8. The flexible display device of claim 1, wherein the protrusion is integrally formed with the adhesive layer.
9. A flexible display device, comprising:
a flexible substrate;
the driving light-emitting layer is formed on one side of the flexible substrate;
the polaroid is formed on one side, away from the flexible substrate, of the driving light-emitting layer;
the touch screen is formed on one side, away from the driving light-emitting layer, of the polarizer;
the cover plate is formed on one side, away from the polaroid, of the touch screen;
bonding layers are respectively arranged between the driving light-emitting layer and the polaroid, between the polaroid and the touch screen and between the touch screen and the cover plate; the bonding layers respectively comprise a central area and an edge area surrounding the central area, a plurality of protrusions arranged in a patterning mode are arranged on one surface, away from the flexible substrate, of the central area, and a stress deformation gap is formed between every two adjacent protrusions; the gaps are communicated with each other to form a plurality of bending stress channels which are parallel to each other in at least one direction;
the protrusions have a central region bottom surface connected to the adhesive layer and a top surface facing away from the adhesive layer, the bottom surface area of the protrusions being greater than the top surface area of the protrusions; the side surface of the protrusion is provided with an outward convex cambered surface, the outward convex cambered surface is connected with the bottom surface and the top surface of the protrusion, and the outward convex cambered surface extends along the direction of the bending stress channel;
along with the bending, the convex cambered surface is gradually attached to the functional layer, the contact area between the strip-shaped protrusions and the functional layer is gradually increased, and the pressure intensity of the contact surface between the strip-shaped protrusions and the functional layer is reduced;
the functional layer comprises the driving light emitting layer, the polarizer, the touch screen and the cover plate.
10. A flexible display device as claimed in claim 9, wherein the protrusions comprise parallel arranged stripe-like protrusions and/or matrix arranged island-like protrusions.
11. The flexible display device of claim 9 or 10, wherein the protrusions between adjacent ones of said gaps have a first width, and wherein the gaps between adjacent ones of said protrusions have a second width, said first width being equal to or greater than said second width.
12. The flexible display device of claim 11, wherein the protrusion is integrally formed with the adhesive layer.
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| CN201710431066.XA CN109004100B (en) | 2017-06-06 | 2017-06-06 | Flexible display device |
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| CN201710431066.XA CN109004100B (en) | 2017-06-06 | 2017-06-06 | Flexible display device |
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| CN109004100A CN109004100A (en) | 2018-12-14 |
| CN109004100B true CN109004100B (en) | 2020-11-10 |
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Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109546006B (en) * | 2018-12-17 | 2020-09-08 | 武汉华星光电半导体显示技术有限公司 | Flexible OLED display panel and manufacturing method thereof |
| CN112640119A (en) * | 2018-12-19 | 2021-04-09 | 深圳市柔宇科技股份有限公司 | Flexible screen |
| CN109814752B (en) * | 2019-01-08 | 2022-02-18 | 昆山工研院新型平板显示技术中心有限公司 | Display screen and display device |
| CN109817097A (en) | 2019-01-31 | 2019-05-28 | 武汉华星光电半导体显示技术有限公司 | Flexible display panels |
| CN110189638B (en) * | 2019-06-28 | 2022-01-28 | 武汉天马微电子有限公司 | Display module and display device |
| CN112242094A (en) * | 2019-07-16 | 2021-01-19 | 上海和辉光电有限公司 | Flexible display screen module |
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| CN111383535B (en) * | 2020-03-25 | 2022-07-08 | 合肥维信诺科技有限公司 | Display panel and display device |
| CN112038303B (en) * | 2020-08-20 | 2022-11-01 | 武汉华星光电半导体显示技术有限公司 | Flexible display module, manufacturing method thereof and display terminal |
| CN112002230B (en) * | 2020-08-27 | 2021-11-23 | 武汉华星光电半导体显示技术有限公司 | Folding display device |
| CN111968537B (en) * | 2020-09-03 | 2022-04-12 | 厦门天马微电子有限公司 | Display module and electronic equipment |
| CN117120918A (en) * | 2021-02-02 | 2023-11-24 | 华为技术有限公司 | Flexible screen and method for manufacturing flexible screen |
| CN113053247B (en) * | 2021-03-15 | 2023-10-24 | 京东方科技集团股份有限公司 | Flexible display panel and display device |
| CN114360381B (en) * | 2022-01-07 | 2023-11-28 | 深圳市华星光电半导体显示技术有限公司 | Flexible display module and mobile terminal |
| CN114879441A (en) * | 2022-06-10 | 2022-08-09 | 深圳市时代华影科技股份有限公司 | Screen and arc-shaped screen installation method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2418188Y (en) * | 2000-01-01 | 2001-02-07 | 张胜田 | Pivot-changeable spring electromagnetic vibrator |
| CN205564746U (en) * | 2016-03-23 | 2016-09-07 | 大连东方科脉电子股份有限公司 | Flexible display substrates film and display device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI275863B (en) * | 2005-02-22 | 2007-03-11 | Fujitsu Ltd | Flexible substrate being able to prevent plastic deformation and flexible image display |
| KR101476893B1 (en) * | 2012-11-29 | 2014-12-26 | 삼성디스플레이 주식회사 | Anti-scratch film for flexible display |
| KR101447885B1 (en) * | 2013-03-04 | 2014-10-08 | 주식회사 엘엠에스 | flexible display device |
| CN103927941B (en) * | 2013-12-23 | 2017-11-03 | 上海天马有机发光显示技术有限公司 | A kind of display device and its manufacture method |
| KR102263602B1 (en) * | 2015-02-04 | 2021-06-10 | 삼성디스플레이 주식회사 | Flexible display substrate, manufacturing method thereof and flexible display device having the same |
| CN105932175B (en) * | 2016-06-28 | 2019-04-23 | 京东方科技集团股份有限公司 | Substrate, packaging method, encapsulating structure and display device to be packaged |
-
2017
- 2017-06-06 CN CN201710431066.XA patent/CN109004100B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2418188Y (en) * | 2000-01-01 | 2001-02-07 | 张胜田 | Pivot-changeable spring electromagnetic vibrator |
| CN205564746U (en) * | 2016-03-23 | 2016-09-07 | 大连东方科脉电子股份有限公司 | Flexible display substrates film and display device |
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