CN109166894A - Display panel, manufacturing method thereof, protective film and display device - Google Patents
Display panel, manufacturing method thereof, protective film and display device Download PDFInfo
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- CN109166894A CN109166894A CN201811012892.1A CN201811012892A CN109166894A CN 109166894 A CN109166894 A CN 109166894A CN 201811012892 A CN201811012892 A CN 201811012892A CN 109166894 A CN109166894 A CN 109166894A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 26
- 238000005452 bending Methods 0.000 claims abstract description 122
- 239000011241 protective layer Substances 0.000 claims abstract description 80
- 239000010410 layer Substances 0.000 claims abstract description 76
- 239000000758 substrate Substances 0.000 claims abstract description 15
- 238000005520 cutting process Methods 0.000 claims description 107
- 239000003223 protective agent Substances 0.000 claims description 33
- 239000011248 coating agent Substances 0.000 claims description 18
- 238000000576 coating method Methods 0.000 claims description 18
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- 230000004888 barrier function Effects 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims 1
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- 238000007711 solidification Methods 0.000 description 5
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- 238000005516 engineering process Methods 0.000 description 4
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- 238000005260 corrosion Methods 0.000 description 3
- 239000006193 liquid solution Substances 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
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- 229910052760 oxygen Inorganic materials 0.000 description 2
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- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
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- 210000004556 brain Anatomy 0.000 description 1
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Classifications
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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
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
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- 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 invention discloses a display panel and a manufacturing method thereof, a protective film and a display device, wherein the display panel comprises: a display area, a non-display area and a bending area; the display device comprises a flexible substrate, a display layer and a bending protective layer, wherein the bending protective layer is positioned in a non-display area, and at least part of the bending protective layer is positioned in a bending area; the bending protection layer comprises an upper surface, a lower surface and a side surface connecting the upper surface and the lower surface; in at least one first section, the length of the vertical projection of the side surface on the flexible substrate is L, the length of the upper surface and the lower surface in the direction vertical to the display panel is D, wherein L is more than or equal to 0 and less than or equal to D/10, and the first section is vertical to the display panel and is vertical to the edge of the cut display panel. The invention effectively avoids the stress concentration on the circuit wires at the edge of the bending area during bending, so that the stress on the circuit wires in the display layer in the bending area is more uniform.
Description
Technical field
The present invention relates to field of display technology, more particularly, to a kind of display panel and its manufacturing method, protective film,
Display device.
Background technique
Traditional flat panel display device technology development has reached its maturity, with the promotion of display technology, flexible display panels
Also it gradually popularizes.Existing flexible display panels are made of soft base material, flexible rollable, have low-power consumption, body
The features such as product is small, display mode is various, in recent years, becomes one of the hot spot of field of flexible display research.
In existing flexible display panels, substrate generally includes viewing area and the non-display area around viewing area,
Non-display area is provided with flexible circuit board, and flexible circuit board is provided with to shine for providing to the Organic Light Emitting Diode of viewing area
Show the integrated circuit of signal.It is additionally provided with metal wire in non-display area, the metal wire is for connecting viewing area and flexible circuit
Plate, while the metal wire can be bent.
The stress caused by the metal wire of bending part is very big when existing flexible display apparatus is bent, so that metal wire is being rolled over
Crook is easily broken off, and reduces the service life of flexible display apparatus.
Summary of the invention
In view of this, the present invention provides a kind of display panel and its manufacturing method, protective film, display devices.
The embodiment of the invention provides a kind of display panels, comprising: viewing area and the non-display area around viewing area, it is non-aobvious
Show that area includes positioned at the bent area of viewing area side；Flexible base board and display layer positioned at flexible base board side；Setting is being shown
The bending protective layer of side of the layer far from flexible base board, bending protective layer are located in non-display area, and bend protective layer at least portion
Quartile is in flex area；Bending protective layer includes upper surface, lower surface and the side for connecting upper and lower surfaces, and upper surface is
The surface of side of the protective layer far from flexible base board is bent, lower surface is to bend protective layer close to the table of the side of flexible base board
Face；In at least one first section, the length of the upright projection of side on flexible substrates is L, and upper and lower surfaces exist
It is D perpendicular to the length on the direction of display panel, wherein 0≤L≤D/10, the first section are and vertical perpendicular to display panel
In the edge of cut display panel.
The embodiment of the invention also provides a kind of manufacturing methods of display panel, comprising: provides a flexible base board, flexible base
Plate includes default viewing area and the default non-display area around default viewing area, and it is upper that default non-display area is included in second direction
In the preset curve area of default viewing area side, to preset the arranged relative direction between viewing area and preset curve area as third
Direction, and it is located at the default cutting area for presetting the two sides of flex area on third direction；Second direction and third direction intersection；
Display layer is formed in the side of flexible base board；Protective film is attached far from the side of flexible base board in display layer, protective film at least wraps
Include the first pad pasting for covering default cutting area；Coating bending protective agent, bending protective agent cover preset curve area；At least by first
Pad pasting removes and removes default cutting area.
The embodiment of the invention also provides a kind of protective films, include at least two the first pad pastings, the second pad pasting and hollow-out parts,
Hollow-out parts and two the first pad pastings are respectively positioned on the same side of the first pad pasting, and hollow-out parts are located between two the first pad pastings, and first
Pad pasting and the second pad pasting semi-surrounding hollow-out parts.
The embodiment of the invention also provides a kind of display devices, including display panel provided by the invention.
Compared with prior art, display panel provided by the invention and its manufacturing method, protective film, display device, at least
Realize it is following the utility model has the advantages that
In the first section of display panel, the length of the upright projection of side on flexible substrates is L, and upper surface is under
Length of the surface on the direction perpendicular to display panel is D, wherein 0≤L≤D/10, wherein the first section is perpendicular to display
Panel, and perpendicular to the edge of cut display panel.Connection upper and lower surfaces side be approximately perpendicular to upper surface and
Lower surface, stress concentrates on the circuit trace of the edge of bent area when effectively avoiding bending, so that the display layer in bent area
The stress that interior circuit trace is subject to is more uniform.
Certainly, implementing any of the products of the present invention specific needs while must not reach all the above technical effect.
By referring to the drawings to the detailed description of exemplary embodiment of the present invention, other feature of the invention and its
Advantage will become apparent.
Detailed description of the invention
It is combined in the description and the attached drawing for constituting part of specification shows the embodiment of the present invention, and even
With its explanation together principle for explaining the present invention.
Fig. 1 is a kind of planar structure schematic diagram of display panel provided in an embodiment of the present invention；
Fig. 2 is the structural schematic diagram in Fig. 1 after display panel bending；
Fig. 3 be in Fig. 1 display panel along the sectional structure chart of A-A '；
Fig. 4 be in Fig. 1 display panel along the sectional structure chart of B-B '；
Fig. 5 is a kind of the schematic diagram of the section structure for bending protective layer provided in an embodiment of the present invention；
Fig. 6 is a kind of structural schematic diagram in first section provided in an embodiment of the present invention；
Fig. 7 is the structural schematic diagram in another first section provided in an embodiment of the present invention；
Fig. 8 is the planar structure schematic diagram of another display panel provided in an embodiment of the present invention；
Fig. 9 is the left view of display panel in Fig. 8；
Figure 10 is a kind of flow chart of the manufacturing method of display panel provided in an embodiment of the present invention；
The planar structure schematic diagram for the middle section display panel that Figure 11 is formed before being step S105；
The planar structure schematic diagram for another middle section display panel that Figure 12 is formed before being step S105；
The planar structure schematic diagram for another middle section display panel that Figure 13 is formed before being step S105；
Figure 14 is the left view of middle section display panel in Figure 13；
The planar structure schematic diagram for another middle section display panel that Figure 15 is formed before being step S105；
Figure 16 is a kind of planar structure schematic diagram of protective film provided in an embodiment of the present invention；
Figure 17 is the planar structure schematic diagram of another protective film provided in an embodiment of the present invention；
Figure 18 is a kind of structural schematic diagram of display device provided in an embodiment of the present invention.
Specific embodiment
Carry out the various exemplary embodiments of detailed description of the present invention now with reference to attached drawing.It should also be noted that unless in addition having
Body explanation, the unlimited system of component and the positioned opposite of step, numerical expression and the numerical value otherwise illustrated in these embodiments is originally
The range of invention.
Be to the description only actually of at least one exemplary embodiment below it is illustrative, never as to the present invention
And its application or any restrictions used.
Technology, method and apparatus known to person of ordinary skill in the relevant may be not discussed in detail, but suitable
In the case of, the technology, method and apparatus should be considered as part of specification.
It is shown here and discuss all examples in, any occurrence should be construed as merely illustratively, without
It is as limitation.Therefore, other examples of exemplary embodiment can have different values.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, then in subsequent attached drawing does not need that it is further discussed.
Fig. 1 is a kind of planar structure schematic diagram of display panel provided in an embodiment of the present invention, and Fig. 2 is display surface in Fig. 1
Structural schematic diagram after plate bending, Fig. 3 is that for display panel along the sectional structure chart of A-A ', Fig. 4 is display panel in Fig. 1 in Fig. 1
Along the sectional structure chart of B-B ', with reference to Fig. 1-Fig. 4, the embodiment of the present invention provides a kind of display panel, comprising: viewing area AA and encloses
It include positioned at the bent area 10 of the side viewing area AA around the non-display area NA of viewing area AA, non-display area NA；
Certainly, the embodiment of the present application only illustrates the bent area of the side of viewing area, in other alternative embodiments of the invention
The settable bent area of the surrounding of middle viewing area, the invention is not limited in this regard.
Optionally, the bending axis of bent area is parallel to the edge of display panel, and bent area is to away from display panel light-emitting surface
Side bending, be advantageously implemented the narrow frame of display panel.
Flexible base board 20 and display layer 30 positioned at 20 side of flexible base board；
Optionally, display layer 30 includes array layer, the organic illuminated display element layer and encapsulated layer that are set on array layer,
Certainly, this is not construed as limiting the invention, and display layer 30 can also include other structures.
The bending protective layer 40 of side of the display layer 30 far from flexible base board 20 is set, and bending protective layer 40 is located at non-aobvious
Show in area NA, and bends protective layer 40 and be at least partially disposed in flex area 10；
The side 43 that protective layer 40 includes upper surface 41, lower surface 42 and connection upper surface 41 and lower surface 42 is bent, on
Surface 41 is the surface for bending side of the protective layer 40 far from flexible base board 20, and lower surface 42 is bending protective layer 40 close to flexible
The surface of the side of substrate 20；
It is understood that upper surface 41, lower surface 42 are roughly parallel to 20 place plane of flexible base board.
In at least one first section 50, the length of upright projection of the side 43 on flexible base board 20 is L, upper surface
41 and length of the lower surface 42 on the direction perpendicular to display panel be D, wherein 0≤L≤D/10, the first section 50 are vertical
In display panel, and perpendicular to the edge of cut display panel.
It should be understood that the case where 0=L not side 43 flexible base board 20 upright projection in the plane do not deposit
, and refer to that 43 place plane of side is vertical with plane where flexible base board, therefore, in the first section 50, side 43 is soft
Property substrate 20 upright projection in the plane be rendered as a bit, which is considered as 0.
Specifically, continuing to refer to figure 1-Fig. 4, in display panel provided in an embodiment of the present invention, viewing area AA is used for picture
Display, the region other than the AA of viewing area is all non-display area NA, and display layer 30 includes in the AA of viewing area for showing
Element, and in non-display area NA for drive in the AA of viewing area for display element all kinds of driving circuits and
Circuit trace.Non-display area NA includes that bending protective layer is equipped in the bent area 10 of the side viewing area AA, non-display area NA
40, and bend protective layer 40 and cover flex area 10.When bent area 10 is bent in display panel, protective layer 40 is bent to curved
Display layer 30 in folding area 10 plays a protective role, while the circuit effectively reduced in the display layer 30 in bent area 10 is walked
The stress that line is subject to, the probability of the circuit trace damage in display layer 30 caused by stress is excessive when effectively reducing bending.
Optionally, bending protective layer material includes: UV glue, and certainly, the embodiment of the present invention is not intended to limit bending protective layer
Material is UV glue, and bending protective layer can also be other materials.
Optionally, bending protective layer is coating or liquid cured layer or less viscous liquid solution cured layer.
The side of bent area 10, on the one hand since route herein is less, another aspect later period mould are equipped in non-display area NA
Group assembling can occupy less space, all can in non-display area NA the two sides of bent area 10 carry out cutting narrow, due to shape
It is less viscous liquid solution at before the bending protective agent solidification of bending protective layer 40.In the prior art in order to not influence to non-aobvious
Show that the two sides of bent area in area are cut, certain distance is kept with cutting edge when bending protective agent is coated with, to bend guarantor
The thickness of the edge of sheath is smaller, and the lesser region of thickness is larger, so that the circuit of the edge of bent area is walked when bending
Uniaxial stress is concentrated, and bigger stress is born than the circuit trace among bent area.
In the first section 50 of display panel, the length of upright projection of the side 43 on flexible base board 20 is L, upper table
The length of face 41 and lower surface 42 on the direction perpendicular to display panel is D, wherein 0≤L≤D/10, wherein the first section
50 perpendicular to display panel, and perpendicular to the edge of cut display panel.Connect the side 43 of upper surface 41 and lower surface 42
It is approximately perpendicular to upper surface 41 and lower surface 42, the circuit for the edge that stress concentrates on bent area 10 when bending is effectively avoided to walk
Line, so that the stress that the circuit trace in display layer 30 in bent area 10 is subject to is more uniform.
Moreover, cut edge will receive biggish to the process that the two sides of bent area 10 in non-display area NA are cut
Impact, stress are relatively concentrated, and are on the one hand not intended to cutting edge position film layer thicker, are on the other hand wished again close to the position of cutting edge
Place's stress problem can be alleviated.Through the embodiment of the present invention, bending protective layer 40 will not cover bent area in non-display area NA
The region that 10 two sides are cut away, bending protective layer 40 will not influence the thickness of cutting edge position film layer, i.e., will not in cutting
Bending protective layer 40 is cut to, meanwhile, the range for bending the bent area 10 that side is covered in protective layer 40 is smaller, where side
For plane where plane and flexible base board close to vertical, that is, the thickness for bending the edge of protective layer 40 is more uniform, stress when bending
Be not concentrated in the circuit trace of the edge of bent area 10 so that the circuit trace in the display layer 30 in bent area 10 by
The stress arrived is more uniform.
Fig. 5 is a kind of the schematic diagram of the section structure for bending protective layer provided in an embodiment of the present invention, with reference to Fig. 5, optionally,
Wherein, side 43a includes the vertical component effect 44 for connecting lower surface 42 and the cambered surface portion 45 for connecting vertical component effect 44 and upper surface 41, is hung down
Straight portion 44 extends along generally perpendicular to the direction of display panel.
Specifically, with continued reference to Fig. 5, bending in protective layer 40, side 43a includes vertical component effect 44 and cambered surface portion 45, due to
Bending protective layer 40 is formed by curing by less viscous bending protective agent, when coating bends protective agent due to bending protective layer
40 two sides are there are protective film, and protective film is there are certain hydrophobicity, in the bending protective layer 40 that is formed after solidification and protective film
There can be cambered surface portion 45 in the side 43a to fit.
Fig. 6 is a kind of structural schematic diagram in first section provided in an embodiment of the present invention, with reference to Fig. 6, optionally, wherein
In the first section 50a, side 43b is zigzag fashion.
Specifically, with continued reference to Fig. 5, since bending protective layer 40 is formed by curing by less viscous bending protective agent,
When coating bends protective agent since the two sides of bending protective layer 40 are there are protective film, after bending protective agent solidification, guarantor is torn off
When cuticula, protective film may be adhered part coating bending protective agent, so that side 43b is the structure of out-of-flatness.
It should be noted that the embodiment of the present invention does not limit, side includes vertical component effect and cambered surface portion or side is injustice
Whole structure, side, which can exist, when using hydrophilic protective film, in the bending protective layer that is formed after solidification slightly upwarps, or by
In the reason of the technique, bending side in protective layer can also be other structures, and the embodiment of the present invention does not do specific restriction to this,
The side that connection upper and lower surfaces need to only be met is approximately perpendicular to upper and lower surfaces.
Fig. 7 is the structural schematic diagram in another first section provided in an embodiment of the present invention, with reference to Fig. 7, optionally,
In, the first interval 60 is equipped in the first section 50b, between side 43 and the edge of display panel proximate to it, between first
Every the shortest distance on 60 in a first direction X be d1, wherein 0≤d1≤200 μm, first direction X are parallel to the first section 50b
And display panel.
Specifically, being equipped with the first interval with continued reference to Fig. 7, between side 43 and the edge of display panel proximate to it
60, the shortest distance on X is d1 in a first direction at the first interval 60,0≤d1≤200 μm are cut to display panel
When, bending protective layer 40 will not be cut to, laser cutting carbonized path is avoided the occurrence of.0 d1≤200 μm <, i.e. bending protective layer
There are certain distances for 40 side 43 and the edge of display panel, so that when being cut to display panel, so that cutting edge
There are certain distances with the side 43 of bending protective layer 40, effectively avoid cutting to bending protective layer when cutting display panel
40, reduce the difficulty of cutting technique.Meanwhile first interval 60 in a first direction the shortest distance on X be less than or equal to 200 μm,
Will not have an impact to the stress of the circuit trace of the edge in bent area 10 when bending.
In conjunction with the above-mentioned analysis of the application, can further be improved to non-display area by the bending protective layer of ability embodiment
During the two sides of bent area 10 are cut in NA, it is thicker to switch to cutting edge position film layer caused by bending protective layer 40
Problem, while will not have an impact to the stress of the circuit trace of the edge in bent area 10 in bending, in bent area 10
The stress that circuit trace in display layer 30 is subject to is more uniform.
Fig. 8 is the planar structure schematic diagram of another display panel provided in an embodiment of the present invention, and Fig. 9 is shown in Fig. 8
The left view of panel, with reference to Fig. 8 and Fig. 9, optionally, wherein non-display area NA further includes being located at viewing area AA with bent area 10
The same side binding area 70；
Flexible circuit board 71 is bound to binding area 70；
Bending protective layer 40 extends at least partially into binding area 70, and is covered on flexible circuit board 71 far from flexible base board
On side.
Specifically, non-display area NA further includes being located at the same of viewing area AA with bent area 10 with continued reference to Fig. 8 and Fig. 9
The binding area 70 of side, and bind area 70 and be located at side of the bent area 10 far from viewing area AA, flexible circuit board 71 is bound to binding
Area 70, the circuit trace being located in display layer 30 in non-display area NA are connected by bent area 10 and flexible circuit board 71, bending
40 pairs of protective layer play a protective role by the circuit trace that bent area 10 and flexible circuit board 71 connect, and effectively reduce bending
When stress it is excessive caused by display layer 30 and the probability of circuit trace damage that flexible circuit board 71 connects.
In other words, viewing area in the non-bent area of the binding area two sides that be located at bent area opposite, and with curved
Folding area is bent to the side away from display panel light-emitting surface, by binding area's reflexed to the back side of display panel.Reduce display surface
The border width of plate, while being other devices with the binding of binding area, such as flexible circuit board (FPC), control chip (IC) etc.
Enough placement spaces and flat binding area surface are provided.
Optionally, bending protective layer, which extends to the non-bent area of bent area two sides and covers, at least partly binds area and binding
On the one hand device in binding area can play a protective role to the binding device in area, circuit trace, on the other hand can make
Film layer structure in the bending non-bent area in region is consistent as far as possible, or has film layer (such as bending protective layer) variation to have one
Transition bends protective layer moreover, it is also possible to which the edge of bending protective layer is avoided to fall into bent area when effectively bent area being avoided to bend
Edge separated from display panel.
Figure 10 is a kind of flow chart of the manufacturing method of display panel provided in an embodiment of the present invention, with reference to Figure 10, this hair
Bright embodiment provides a kind of manufacturing method of display panel, comprising:
S101, a flexible base board is provided, flexible base board includes default viewing area and presets non-show around default viewing area
Show area, default non-display area includes the preset curve area for being located at default viewing area side in second direction, to preset viewing area
Arranged relative direction between the preset curve area is third direction, and is located at default flex area on third direction
The default cutting area of two sides；Second direction and third direction intersection.
S102, display layer is formed in the side of flexible base board.
S103, protective film is attached far from the side of flexible base board in display layer, protective film includes at least the default cutting of covering
First pad pasting in area.
S104, coating bending protective agent, bending protective agent cover preset curve area.
It should be understood that " default " described in the application, which refers to, is used to form certain a part in display panel manufacturing process
Premise, certain area that certain preset area, that is, final display panel is presented corresponding region in the production process, column such as, preset curve area
It is used to form the bent area in display panel, the position in preset curve area is curved in the display panel being ultimately produced
The position of folding area.
The planar structure schematic diagram of the middle section display panel formed before being step S105 with reference to Figure 11, Figure 11, " middle section is aobvious
Show panel " refer to display panel in manufacturing process.Flexible base board 20 includes presetting viewing area AA1 and around default viewing area AA1
Default non-display area NA1, default non-display area NA1 includes be located at the default side viewing area AA1 on second direction Y default
Bent area 10a, and it is located at the default cutting area 80 for presetting the two sides of flex area 10a on third direction B, protective film 90 is at least
The first pad pasting 91 including covering default cutting area 80.Coating bending protective agent, bending protective agent cover preset curve area 10a,
Bending protective layer 40 is formed after bending protective agent solidification, bending protective layer 40 is located in the default non-display area NA1, and curved
Folding protective layer 40 is at least partially disposed in default flex area 10a.
S105, at least the first pad pasting is removed and removes default cutting area.
Need to explain, cutting step mentioned here can be individual one of cutting step and be made, be also possible to and
Large substrates when being cut into small substrate same cutting step be made, the embodiment of the present invention to this with no restriction.It should be understood that here
Described large substrates can be understood as being formed the film layer of flexible base board, and large substrates include multiple small substrates, and each small substrate is corresponding
One be made in display panel.
It continues to refer to figure 1 and Figure 11 removes the first pad pasting 91 after bending protective agent is formed by curing bending protective layer 40
It removes, and removes default cutting area 80.Display panel made of manufacturing method using display panel provided in an embodiment of the present invention,
Due to the presence of protective film 90, the side for bending connection upper and lower surfaces in protective layer 40 is approximately perpendicular to upper surface under
The integral thickness on surface, i.e. bending protective layer 40 is more uniform, and stress concentrates on the edge of bent area 10 when effectively avoiding bending
The circuit trace at place, so that the stress that the circuit trace in display layer 30 in bent area 10 is subject to is more uniform.
Optionally, there are certain hydrophobicitys for the first pad pasting, can more effectively intercept protecting for making bending for diffusion
Layer is the bending protective agent of liquid solution, the bending protective layer formed after bending protective agent can also be avoided to solidify and the first patch
Film bonds too closely, and the first pad pasting is difficult to remove.
Optionally, wherein the adhesion strength of the first pad pasting is less than 5gf/in；
First pad pasting is removed and removes default cutting area, comprising:
The first pad pasting is torn off from display panel first, then default cutting area is cut along the first cutting edge and is removed, first
Cutting edge is that preset curve area and default cutting area have a common boundary.
1 is continued to refer to figure 1, the adhesion strength of the first pad pasting 91 is less than 5gf/in, i.e. the first pad pasting 91 is weak adhesion strength film,
Be used for by the first pad pasting 91 so that bend the integral thickness of protective layer 40 more uniformly after, can be directly by the first pad pasting 91 from aobvious
Show in panel and tear off, then default cutting area 80 is cut along the first cutting edge 81 and is removed.
First pad pasting 91 is weak adhesion strength film, is effectively avoided when tearing off the first pad pasting 91 from display panel to display
The film layer that the first pad pasting 91 is adhered in panel impacts, and film layer is made to tear fracture.Protective film 90 includes for weak adhesion strength film
The first pad pasting 91 the first pad pasting 91 need to only be attached before coating bends protective agent and cover default cutting area 80, it is to be curved
After folding protective agent is formed by curing bending protective layer 40, the first pad pasting 91 is torn off, without being pasted by cutting technique by first
Film 91 removes, and reduces the difficulty of subsequent cutting technique.
Optionally, the first pad pasting 91 covers the first cutting edge 81, hereafter has a detailed description to this.
Optionally, wherein protective film includes the first protective film, and the first protective film includes the first pad pasting and the default display of covering
Second pad pasting in area；
At least the first pad pasting is removed and removes default cutting area and includes:
By cutting while removing the first pad pasting and default cutting area.
The planar structure schematic diagram for another middle section display panel that Figure 12 is formed before being step S105, with reference to Figure 12,
Protective film 90 includes the first protective film 92, and the first protective film 92 includes the second of the first pad pasting 91 and the default viewing area AA1 of covering
Pad pasting 93, the first protective film 92 are an integral molding structure, and the adhesion strength of the first protective film 92 is in 100gf/in or more, the first protection
Film 92 is the film layer that can be retained in display panel.
Before coating bends protective agent, the first protective film 92 is attached, the first pad pasting 91, which covers, presets cutting area 80, and second
Pad pasting 93 covers default viewing area AA1, the first protective film 92 be can be that the film layer being originally present in display panel is multiplexed with guarantor
Cuticula 90 by the first pad pasting 91 and presets cutting by cutting technique after bending protective agent and being formed by curing bending protective layer 40
Area 80 removes, and it is not necessary that the first pad pasting 91 is fabricated separately, then individually tears off the first pad pasting 91, effectively reduces processing step, reduces life
Cost is produced, and no longer needs to individually attach a tunic, technique is reduced and is made.
Optionally, wherein the first protective film is one or more of barrier layer or polaroid.
2 are continued to refer to figure 1, one or more of barrier layer or polaroid reusable are the first protective film 92.Wherein, it hinders
Barrier is inorganic or multiple inorganic organic alternate laminated film layers.
It is understood that being not intended to limit the first protective film in the embodiment of the present invention is one of barrier layer or polaroid
Or more persons, or other film layers are multiplexed with the first protective film in display panel.
One or more of barrier layer or polaroid reusable are the first protective film, no longer need to individually attach a tunic,
Technique is reduced to be made, meanwhile, when polaroid is multiplexed with the first protective film, since polaroid contraposition is more accurate, utilize polaroid
Contraposition, can be improved the precision of the first pad pasting sticking position.
2 are continued to refer to figure 1, optionally, wherein the first pad pasting 91 ends in the first cutting edge 81, and the first cutting edge 81 is
Preset curve area 10a and default cutting area 80 have a common boundary.
Specifically, after bending protective agent and being formed by curing bending protective layer 40, by cutting technique by 91 He of the first pad pasting
Default cutting area 80 removes simultaneously, i.e., cuts along the first cutting edge 81 of 80 intersection of preset curve area 10a and default cutting area
The first pad pasting 91 and default cutting area 80 can be removed simultaneously, bending protective layer 40 will not be cut in cutting, while guaranteeing to cut
Cut the residual in rear display panel without the first pad pasting 91.
Optionally, wherein the manufacturing method of display panel further include:
After forming display layer, before attaching protective film, display layer far from flexible base board side formed encapsulation
Layer, encapsulated layer cover default viewing area；
Attaching protective film includes: to attach protective film far from the side of flexible base board in encapsulated layer, and protective film includes the second guarantor
Cuticula, the second protective film include the third pad pasting of the first pad pasting and covering encapsulated layer；
The adhesion strength of second protective film is less than 5gf/in；
First pad pasting is removed and removes default cutting area and includes:
The second protective film is torn off from display panel first, then default cutting area is cut along the first cutting edge and is removed, the
One cutting edge is that preset curve area and default cutting area have a common boundary.
The planar structure schematic diagram for another middle section display panel that Figure 13 is formed before being step S105, Figure 14 is Figure 13
The left view of middle section display panel, with reference to Figure 13 and Figure 14, in order to block moisture and oxygen to light-emitting component in display layer 30
Corrosion cause component failure, display layer 30 far from flexible base board 20 side formed encapsulated layer 21, encapsulated layer 21 covers pre-
If viewing area AA1.
Before coating bends protective agent, protective film 90 is attached, protective film 90 includes the second protective film 94, the second protective film
94 include the third pad pasting 95 of the first pad pasting 91 and covering encapsulated layer 21, and the first pad pasting 91 covers default cutting area 80, third patch
Film 95 covers default viewing area AA1, and third pad pasting 95 effectively prevent encapsulated layer 21 to be scraped off during coating bends protective agent.
And second protective film 94 adhesion strength be less than 5gf/in, i.e. the second protective film 94 be weak adhesion strength film, coating bend protective agent
Before, 94 entirety of the second protective film need to only be attached, after bending protective agent and being formed by curing bending protective layer 40, by second
Protective film 94 is whole to be torn off, and is cut default cutting area 80 along the first cutting edge 81 when removing without simultaneously by the first pad pasting
91 removals, reduce the difficulty of subsequent cutting technique.
Since encapsulated layer is for blocking the corrosion of moisture and oxygen to light-emitting component, once encapsulated layer damages, moisture and oxygen
Gas can carry out corrosion to light-emitting component and cause component failure, and therefore, protective film protects encapsulated layer in first time.
Optionally, wherein the first pad pasting covers the first cutting edge.
The planar structure schematic diagram for another middle section display panel that Figure 15 is formed before being step S105, with reference to Figure 15,
First cutting edge 81 is preset curve area 10a and default cutting area 80 has a common boundary, and the first pad pasting 91a covers the first cutting edge 81, by
In the presence of the first pad pasting 91a, when coating bending is protectant, bending protective agent will not spread to the first cutting edge 81, to
After bending protective agent is formed by curing bending protective layer 40, the first pad pasting 91a is torn off, then along the first cutting edge 81 by default cutting
The cutting removal of area 80, when cutting default cutting area 80 along the first cutting edge 81, it is ensured that bending protective layer 40 will not be cut to, effectively
Avoid the occurrence of cutting carbonized path.
Optionally, wherein the first pad pasting at least partly covers preset curve area, and the first pad pasting covers preset curve area
The distance of part to the first cutting edge is d2, wherein 0≤d2≤200 μm.
5 are continued to refer to figure 1, the distance of part to first cutting edge 81 in the first pad pasting 91a covering preset curve area 80 is
D2, wherein 0≤d2≤200 μm.First pad pasting 91a covers in the part in preset curve area 80 any point to the first cutting edge 81
Distance be all satisfied above-mentioned condition, i.e. the first pad pasting 91a covers the part in preset curve area 80 to the distance of the first cutting edge 81
It is up to 200 μm, so that the distance of the bending protective layer 40 and the first cutting edge 81 that are formed is up to 200 μm.Effectively avoid
Cut to bending protective layer 40 when cutting default cutting area 80, reduce the difficulty of cutting technique, meanwhile, in bending will not to
The stress of the circuit trace of the edge of preset curve area 10a has an impact.
When default cutting area 80 being cut removal along the first cutting edge 81, biggish punching will receive at the first cutting edge 81
It hits, stress is relatively concentrated, and is on the one hand not intended to film layer at 81 position of the first cutting edge thicker, on the other hand wishes to cut close to first again
Stress problem can be alleviated at the position of cut edge 81.Through the embodiment of the present invention, bending protective layer 40 will not cover default cut
Area 80 is cut, i.e., will not cut to bending protective layer 40 when default cutting area 80 is cut and removed along the first cutting edge 81, meanwhile,
The range for the bent area that side is covered in bending protective layer is smaller, and plane where plane where side and flexible base board is close to hang down
Directly, that is, the thickness for bending the edge of protective layer is also more uniform, and stress is not concentrated in the electricity of the edge of bent area when bending
On the cabling of road, so that the stress that the circuit trace in display layer in bent area is subject to is more uniform.
Figure 16 is a kind of planar structure schematic diagram of protective film provided in an embodiment of the present invention, and with reference to Figure 16, the present invention is real
It applies example and a kind of protective film is provided, include at least two the first pad pastings 91, the second pad pasting 93 and hollow-out parts 96, hollow-out parts 96 and two
First pad pasting 91 is respectively positioned on the same side of second pad pasting 93, and hollow-out parts 96 are located between two the first pad pastings 91, and first
93 semi-surrounding hollow-out parts 96 of pad pasting 91 and the second pad pasting.
Optionally, the adhesion strength of protective film is less than 5gf/in.
Protective film provided in an embodiment of the present invention can use in the manufacturing process of display panel, and the first pad pasting 91 covers pre-
If cutting area, the second pad pasting 93 covers default viewing area, and hollow-out parts 96 are at least partially disposed at preset curve area, by the first patch
Coating bending protective agent in the hollow-out parts 96 that film 91 and 93 semi-surrounding of the second pad pasting are formed, so as to be formed in display panel
Protective layer is bent, the bending protective layer integral thickness that the protective film provided through the embodiment of the present invention is formed is more uniform, and its
Edge is approximately perpendicular to its upper surface and its lower surface.
Figure 17 is the planar structure schematic diagram of another protective film provided in an embodiment of the present invention, with reference to Figure 17, optionally,
It wherein, further include auxiliary paster 97, auxiliary paster 97 is located between two the first pad pastings 91, and the first pad pasting 91, the second pad pasting
93 and auxiliary paster 97 surround hollow-out parts 96.
7 are continued to refer to figure 1, protective film further includes the auxiliary paster 97 between two the first pad pastings 91, auxiliary paster
97 at least partly covering binding area, the first pad pasting 91, the second pad pasting 93 and auxiliary pasters 97 are surrounded hollow-out parts 96, are further limited
Bending protectant coating range effectively prevents coating bending protection in the range of not needing coating bending protective agent
Agent reduces and bends protectant dosage, reduces production cost.
The embodiment of the present invention provides a kind of display device, including display panel as described above 100.
Figure 18 is please referred to, Figure 18 is a kind of structural schematic diagram of display device provided in an embodiment of the present invention.Figure 18 is provided
Display device 1000 include display panel 100 that any of the above-described embodiment of the present invention provides.Figure 18 embodiment is only with mobile phone
Example, is illustrated display device 1000, it is to be understood that display device 100 provided in an embodiment of the present invention can be electricity
Other display devices having a display function such as brain, TV, display device for mounting on vehicle, the present invention are not specifically limited this.This hair
The display device that bright embodiment provides, the beneficial effect with display panel provided in an embodiment of the present invention, can specifically refer to
The various embodiments described above are illustrated for display panel, and details are not described herein for the present embodiment.
Through the foregoing embodiment it is found that display panel provided by the invention and its manufacturing method, protective film, display device,
At least realize it is following the utility model has the advantages that
In the first section of display panel, the length of the upright projection of side on flexible substrates is L, and upper surface is under
Length of the surface on the direction perpendicular to display panel is D, wherein 0≤L≤D/10, wherein the first section is perpendicular to display
Panel, and perpendicular to the edge of cut display panel.Connection upper and lower surfaces side be approximately perpendicular to upper surface and
Lower surface, stress concentrates on the circuit trace of the edge of bent area when effectively avoiding bending, so that the display layer in bent area
The stress that interior circuit trace is subject to is more uniform.
Although some specific embodiments of the invention are described in detail by example, the skill of this field
Art personnel it should be understood that example above merely to being illustrated, the range being not intended to be limiting of the invention.The skill of this field
Art personnel are it should be understood that can without departing from the scope and spirit of the present invention modify to above embodiments.This hair
Bright range is defined by the following claims.
Claims (16)
1. a kind of display panel characterized by comprising viewing area and the non-display area around the viewing area, it is described non-aobvious
Show that area includes positioned at the bent area of the viewing area side；
Flexible base board and display layer positioned at the flexible base board side；
The bending protective layer of side of the display layer far from the flexible base board is set, and the bending protective layer is located at described
In non-display area, and the bending protective layer is at least partially disposed in the flex area；
The bending protective layer includes the side of upper surface, lower surface and the connection upper surface and the lower surface, it is described on
Surface is the surface of the bending side of the protective layer far from the flexible base board, and the lower surface is that the bending protective layer leans on
The surface of the side of the nearly flexible base board；
In at least one first section, the length of upright projection of the side on the flexible base board is L, the upper table
The length of face and the lower surface on the direction perpendicular to the display panel is D, wherein 0≤L≤D/10, described first
Section is perpendicular to the display panel, and perpendicular to the edge of the cut display panel.
2. display panel according to claim 1, which is characterized in that
The side includes the cambered surface portion for connecting the vertical component effect and the connection vertical component effect and the upper surface of the lower surface,
The vertical component effect extends along the direction generally perpendicular to the display panel.
3. display panel according to claim 1, which is characterized in that
In first section, the side is zigzag fashion.
4. display panel according to claim 1, which is characterized in that
The first interval is equipped in first section, between the side and the edge of the display panel proximate to it,
The shortest distance of first interval in a first direction is d1, wherein 0≤d1≤200 μm, the first direction are parallel to institute
State the first section and the display panel.
5. display panel according to claim 1, which is characterized in that further include flexible circuit board；
The non-display area further includes the binding area for being located at the same side of the viewing area with the bent area；
Flexible circuit board is bound to the binding area；
The bending protective layer extends at least partially into the binding area, and is covered on the flexible circuit board far from the flexibility
On the side of substrate.
6. a kind of for making the manufacturing method of display panel described in claim 1-5 characterized by comprising
There is provided a flexible base board, the flexible base board includes default viewing area and non-display around presetting for the default viewing area
Area, the default non-display area includes the preset curve area for being located at the default viewing area side in second direction, with described
Arranged relative direction between default viewing area and the preset curve area is third direction, and is located at institute on third direction
State the default cutting area of the two sides of default flex area；The second direction and third direction intersection；
Display layer is formed in the side of the flexible base board；
Protective film is attached far from the side of the flexible base board in the display layer, it is described pre- that the protective film includes at least covering
If the first pad pasting of cutting area；
Coating bending protective agent, the bending protective agent cover the preset curve area；
At least first pad pasting is removed and removes the default cutting area.
7. the manufacturing method of display panel according to claim 6, which is characterized in that
The adhesion strength of first pad pasting is less than 5gf/in；
It is described that first pad pasting is removed and removes the default cutting area, comprising:
First pad pasting is torn off from the display panel first, then goes the default cutting area cutting along the first cutting edge
It removes, first cutting edge is that the preset curve area and the default cutting area have a common boundary.
8. the manufacturing method of display panel according to claim 6, which is characterized in that
The protective film includes the first protective film, and first protective film includes first pad pasting and the covering default display
Second pad pasting in area；
At least first pad pasting is removed and removes the default cutting area and includes:
By cutting while removing first pad pasting and the default cutting area.
9. the manufacturing method of display panel according to claim 8, which is characterized in that
First protective film is one or more of the barrier layer or polaroid.
10. the manufacturing method of display panel according to claim 9, which is characterized in that
First pad pasting ends in the first cutting edge, and first cutting edge is the preset curve area and the default cutting
Area has a common boundary.
11. the manufacturing method of display panel according to claim 6, which is characterized in that further include:
After the formation display layer, before the attaching protective film, in the display layer far from the flexible base board
Side forms encapsulated layer, and the encapsulated layer covers the default viewing area；
The protective film that attaches includes: to attach the protective film far from the side of the flexible base board in the encapsulated layer, described
Protective film includes the second protective film, and second protective film includes first pad pasting and the third patch for covering the encapsulated layer
Film；
The adhesion strength of second protective film is less than 5gf/in；
It is described first pad pasting is removed and removes the default cutting area include:
Second protective film is torn off from the display panel first, then cuts the default cutting area along the first cutting edge
Removal, first cutting edge are that the preset curve area and the default cutting area have a common boundary.
12. the manufacturing method of display panel according to claim 7 or 11, which is characterized in that
First pad pasting covers first cutting edge.
13. the manufacturing method of display panel according to claim 12, which is characterized in that
First pad pasting at least partly covers the preset curve area, and first pad pasting covers the preset curve area
The distance of part to first cutting edge is d2, wherein 0≤d2≤200 μm.
14. a kind of for making the protective film of display panel described in claim 1-5, which is characterized in that include at least two
First pad pasting, the second pad pasting and hollow-out parts, hollow-out parts and two first pad pastings are respectively positioned on the same side of second pad pasting,
The hollow-out parts are located between two first pad pastings, and hollow out described in first pad pasting and the second pad pasting semi-surrounding
Portion.
15. 4 protective film according to claim 1, which is characterized in that further include auxiliary paster, the auxiliary paster is located at two
Between a first pad pasting, and first pad pasting, second pad pasting and the auxiliary paster surround the hollow-out parts.
16. a kind of display device, which is characterized in that including the described in any item display panels of claim 1-5.
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