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CN107976725A - A kind of protective film and preparation method thereof, flexible panel, display device and preparation method thereof - Google Patents

A kind of protective film and preparation method thereof, flexible panel, display device and preparation method thereof Download PDF

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Publication number
CN107976725A
CN107976725A CN201810054048.9A CN201810054048A CN107976725A CN 107976725 A CN107976725 A CN 107976725A CN 201810054048 A CN201810054048 A CN 201810054048A CN 107976725 A CN107976725 A CN 107976725A
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CN
China
Prior art keywords
hole
protective film
base board
flexible base
region
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201810054048.9A
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Chinese (zh)
Inventor
王伟
詹志锋
黄鹏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BOE Technology Group Co Ltd
Chengdu BOE Optoelectronics Technology Co Ltd
Original Assignee
BOE Technology Group Co Ltd
Chengdu BOE Optoelectronics Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BOE Technology Group Co Ltd, Chengdu BOE Optoelectronics Technology Co Ltd filed Critical BOE Technology Group Co Ltd
Priority to CN201810054048.9A priority Critical patent/CN107976725A/en
Publication of CN107976725A publication Critical patent/CN107976725A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/10Optical coatings produced by application to, or surface treatment of, optical elements
    • G02B1/14Protective coatings, e.g. hard coatings
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30Indicating 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
    • G09F9/301Indicating 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)
  • Optics & Photonics (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

The present invention discloses a kind of protective film and preparation method thereof, flexible panel, display device and preparation method thereof, is related to display technology field, to ensure the force stability of flexible base board and buckling performance.The protective film is used to paste on flexible substrates, and the flexible base board includes flat region and at least one bending region;It is characterized in that, the protective film includes protection membrane body, and at least one through hole being opened on protection membrane body, each bending region at least correspond to a through hole;When the protective film is attached to flexible base board, the through hole is located at the corresponding bending region in the orthographic projection of the flexible base board.The flexible panel includes the protective film that above-mentioned technical proposal is carried.Protective film provided by the invention and preparation method thereof, flexible panel and preparation method thereof, display device are used in Flexible Displays.

Description

A kind of protective film and preparation method thereof, flexible panel, display device and preparation method thereof
Technical field
The present invention relates to display technology field, more particularly to a kind of protective film and preparation method thereof, flexible panel, display dress Put and preparation method thereof.
Background technology
As shown in Figure 1, in the manufacturing process of flexible display, protective film 2 generally is attached at the back of flexible base board 1, To be protected to flexible base board 1.And after protective film is attached, it is also necessary to flexible base board 1 is carried out bending, with to flexible base board Modularity technique is carried out, this causes the radius bend of flexible base board to become larger, is unfavorable for full frameization of flexible display.
In order to overcome the above problem, as shown in Figure 1, after flexible base board bending, it is also necessary to utilize laser ablation protective film 2 Positioned at the part of bending region, to form through hole 20, so as to reduce the radius bend of flexible base board so that flexible display it is complete Screenization effect is relatively good.However, the unstability due to laser energy so that protective film removes area's some places and do not removed Entirely, and some places then remove and excessively, cause the bending region stress of flexible base board unstable.
The content of the invention
It is an object of the invention to provide a kind of protective film and preparation method thereof, flexible panel, display device and its making Method, to ensure that the region force stability of bending occurs for flexible base board.
To achieve these goals, the present invention provides following technical solution:
A kind of protective film, the protective film are used to paste on flexible substrates, and the flexible base board is including flat region and at least One bending region;The protective film includes protection membrane body, and at least one through hole being opened on protection membrane body, often A bending region at least corresponds to a through hole;When the protective film is attached to flexible base board, the through hole is in the flexible base The orthographic projection of plate is located at the bending region.
Compared with prior art, in protective film provided by the invention, protect and offer at least one through hole on membrane body, and Flexible base board includes at least one bending region, and each bending region at least corresponds to a through hole, this causes protective film When being attached to flexible base board, through hole is located at corresponding bending region in the orthographic projection of flexible base board;At the bending region of flexible base board In bending state, protective film would not increase the radius bend of bending region, be rolled over this makes it possible to avoid existing laser ablation The corresponding protective film in curved region, caused flexible base board occur bending region force stability it is poor the problem of.
Present invention also offers a kind of production method of protective film described in above-mentioned technical proposal, the making of the protective film Method includes:
One protection membrane body is provided,
The flexible base board that the protection membrane body needs to attach is obtained, the flexible base board includes bending region and flat region Domain and at least one flat region;
According to the protection membrane body and the bending region correspondence, obtaining protection membrane body needs the area of perforate Domain;
Need the region of perforate to open up at least one through hole in the protection membrane body, obtain protective film, each folding Curved region at least corresponds to a through hole, and when the protective film is attached to flexible base board, the through hole is thrown in the positive of the flexible base board Shadow is positioned at the corresponding bending region.
Compared with prior art, the beneficial effect of the production method of protective film provided by the invention is carried with above-mentioned technical proposal The beneficial effect of the protective film of confession is identical, and this will not be repeated here.
Present invention also offers a kind of flexible panel, which includes flexible base board and protective film, the protective film For protective film described in above-mentioned technical proposal.
Compared with prior art, the protection that the beneficial effect of flexible panel provided by the invention is provided with above-mentioned technical proposal The beneficial effect of film is identical, and this will not be repeated here.
Present invention also offers a kind of display device, which includes the flexible panel described in above-mentioned technical proposal.
Compared with prior art, the protection that the beneficial effect of display device provided by the invention is provided with above-mentioned technical proposal The beneficial effect of film is identical, and this will not be repeated here.
Present invention also offers a kind of production method of display device, the production method of the display device includes:
One flexible base board is provided;The surface of the flexible base board is formed with luminescent device;
Protective film is attached away from the surface of luminescent device in the flexible base board, obtains flexible panel;The flexible panel For flexible panel described in above-mentioned technical proposal;
The flexible panel is subjected to bending so that the flexible panel is bound together with circuit board, obtains display dress Put.
Compared with prior art, the beneficial effect and above-mentioned technical proposal of the production method of display device provided by the invention The beneficial effect of the protective film of offer is identical, and this will not be repeated here.
Brief description of the drawings
Attached drawing described herein is used for providing a further understanding of the present invention, forms the part of the present invention, this hair Bright schematic description and description is used to explain the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is flexible base board bending region schematic diagram in the prior art;
Fig. 2 is the first structure diagram of protective film provided in an embodiment of the present invention;
Fig. 3 is second of structure diagram of protective film provided in an embodiment of the present invention;
Fig. 4 is the axial sectional view of through hole in Fig. 2 or Fig. 3;
Fig. 5 is the third structure diagram of protective film provided in an embodiment of the present invention;
Fig. 6 is the axial sectional view of through hole in Fig. 5;
Fig. 7 be protective film provided in an embodiment of the present invention the 4th in structure diagram;
Fig. 8 is the structure diagram of the non-bending state of flexible panel provided in an embodiment of the present invention;
Fig. 9 is distribution schematic diagram of the flexible panel provided in an embodiment of the present invention before no cutting;
Figure 10 is the production process schematic diagram one of protective film provided in an embodiment of the present invention;
Figure 11 is the production process schematic diagram two of protective film provided in an embodiment of the present invention;
Figure 12 is the production process schematic diagram three of protective film provided in an embodiment of the present invention;
Figure 13 is the production process block diagram of protective film provided in an embodiment of the present invention;
Figure 14 is the production process block diagram of display device provided in an embodiment of the present invention;
Figure 15 is display device structure schematic diagram provided in an embodiment of the present invention.
Reference numeral:
1- flexible base boards, the first flexible substrates of 11-;
The second flexible substrates of 12-, the 3rd flexible substrates of 13-;
The 4th flexible substrates of 14-, 2- protection membrane bodies;
2 '-release film, 20- through holes;
201- first through hole area, the second through hole areas of 202-;
203- third through-holes area, 204- fourth holes area;
21- the first film monomers, 22- the second film monomers;
23- tertiary membrane monomers, the 4th film monomers of 24-;
3- display devices, 30- display areas;
31- routing regions, 32- binding regions;
The first display devices of 301-, 302- second display parts;
The 3rd display devices of 303-, the 4th display devices of 304-;
Protective film at the top of 4-, 5- circuit boards;
6- electric conduction routings, 7- tack coats;
81- grinds the wheel that disappears, 82- cutter.
Embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, those of ordinary skill in the art are obtained every other without creative efforts Embodiment, belongs to the scope of protection of the invention.
Refer to Fig. 2 and Figure 15, protective film provided in an embodiment of the present invention, for pasting on a flexible substrate 1, flexible base board 1 includes flat region and at least one bending region;The protective film includes protection membrane body 2, and is opened in protection membrane body 2 On at least one through hole 20, each bending region at least correspond to a through hole;When protective film is attached to flexible base board 1, through hole 20 It is located at corresponding bending region in the orthographic projection of flexible base board 1.
In protective film based on the embodiment of the present invention, protect and offer at least one through hole 20 on membrane body 2, and it is soft Property substrate 1 include at least one bending region, and each bending region at least corresponds to a through hole 20, this causes protective film to be attached to During flexible base board 1, through hole 20 is located at corresponding bending region in the orthographic projection of flexible base board 1, at the bending region of flexible base board 1 In bending state, protective film would not increase the radius bend of bending region, be rolled over this makes it possible to avoid existing laser ablation The corresponding protective film in curved region, the region force stability that bending occurs for caused flexible base board decline problem.
It should be noted that as shown in Fig. 4, Fig. 6 and Figure 15, protective film provided by the invention can also include release film 2 ', to be covered on protection membrane body 2, when protective film is attached on flexible base board 1, release film 2 ' is removed, Then membrane body 2 will be protected to remove the surface patch of release film 2 ' on a flexible substrate 1.
It is appreciated that when existing flexible base board 1 is applied to display device, flexible base board occurs as shown in figure 15 180 ° of bendings, the section of the differently contoured position of plane and bending region where this causes the flat region of flexible base board are formed Angular range at 0~180 °;Wherein, by a certain position profile of plane and bending region where the flat region of flexible base board The angle that is formed of section be defined as the bending degree of a certain position in bending region.Such as:Bending where the profile A of bending region The bending degree of position, section and the angle α of plane where flat region equal to the profile A of bending region.
Wherein, the radius bend of flexible base board 1 is decided by the corresponding guarantor of bending position in the bending region of bending degree=90 ° The material thickness of cuticula body 2;Also, since stress caused by bending position compares in the bending region of bending degree=90 ° Greatly, therefore, material used in the corresponding protection membrane body 2 of bending position of bending degree=90 ° should be removed as far as possible, with While the radius bend of flexible base board is reduced, it is 90 ° of bending position institute to reduce bending degree in bending region as far as possible The extruding force born.
In view of bending degree in the range of 0~90 °, stress caused by bending position is with bending degree in bending region Increase and gradually increase, and bending degree is in the range of 90 °~180 °, in bending region stress caused by bending position with The increase of bending degree and be gradually reduced, therefore, when bending degree is in the range of 0~90 °, with the increase of bending degree, gradually Improve the removal amount that the corresponding protection membrane body 2 of bending position in bending region uses material;When bending degree 90 °~ 180 °, with the increase of bending degree, gradually decrease the corresponding protection membrane body of bending position in bending region and use material Removal amount, on the basis of reservation protection membrane body material as far as possible, to reduce bending degree in the range of 0~90 °, bending region Stress caused by middle bending position, so as to avoid the position of material removal amount maximum in protection membrane body from cracking.
By above-mentioned analysis, the material removal amount of the corresponding protection membrane body in bending region is first in the embodiment of the present invention Increase with the increase of the bending degree of bending position, when bending degree reaches 90 °, the corresponding protection membrane body of bending position Material removal amount starts to reduce with the increase of the bending degree of bending position again.
Exemplary, as shown in Figure 4 and Figure 6, when each bending region corresponds to a through hole, each through hole is radially long The through hole that is gradually reduced is spent, and when protective film is attached to flexible base board 1, through hole 20 contacts the radical length of one end of flexible base board 1 It is minimum.
Specifically, as shown in Fig. 2, Fig. 4 and Fig. 6, when the radical length for the through hole 20 that protection membrane body 2 is opened up gradually subtracts Hour, radial direction of the embodiment of the present invention along through hole 20, the section of through hole 20 is circle section or polygon section;Along through hole 20 axial direction, the section of through hole 20 is arcuation section or trapezoidal cross-section.
Exemplary, when each bending region corresponds to multiple through holes, as shown in Figure 3 and Figure 5, the quantity of through hole is M When, pattern holes area is formed per N number of through hole, the quantity in pattern holes area is identical with the quantity of bending region, and protective film is attached to soft Property substrate when, pattern holes area and bending region correspond, and the through hole in pattern holes area is located in the orthographic projection of flexible base board Corresponding bending region;M=kN, M, N are the integer more than or equal to 2, and k is the integer more than or equal to 1;In other words, each folding Curved region at least corresponds to multiple through holes;At this time, the bending degree of bending position in bending region is limited as 0~90 °, pattern holes area Via densities increase with the increase of bending degree;The bending degree of bending position is 90 °~180 ° in bending region, and pattern leads to The via densities of porose area reduce with the increase of bending degree, and this makes it possible to by adjusting bending region difference bending position pair The via densities answered, ensure the material removal amount elder generation of the corresponding protection membrane body of bending position with the bending degree of outline position Increase and increase, when bending degree reaches 90 °, the material removal amount of the corresponding protection membrane body of bending position starts with folding again The increase of the bending degree of curved position and reduce.
Further, as shown in Figure 3 and Figure 5, each pattern holes region is sparse including two through holes in the embodiment of the present invention Area and positioned at the through hole compact district of two through hole rarefactions;The via densities of through hole compact district are more than the through hole of through hole rarefaction Density.
It should be noted that the flexible base board of a display panel has a bending region in the prior art, and in order to The mass of display panel generation, it is general first to form multiple display devices on flexible substrates, then in flexible base board away from aobvious Show that the surface of device attaches protective film, then cut underlay substrate so that on multiple flexible base boards that cutting is formed, There is a display device on each flexible base board;Based on this, as shown in fig. 7, protective film provided in an embodiment of the present invention attaches On flexible substrates, after flexible base board is cut, protection membrane body can form four film monomers, and one is opened up on each film monomer Through hole area, the first film monomer 21, the second film monomer 22,23 and the 4th film monomer 24 of tertiary membrane monomer, are opened on the first film monomer 21 Equipped with first through hole area 201, the second through hole area 202 is offered on the second film monomer 22, the 3rd is offered on tertiary membrane monomer 23 Through hole area 203, offers fourth hole area 204 on the 4th film monomer 24.Wherein, the number of openings that each through hole area is opened up can Think Fig. 2, Fig. 4 and one illustrated in fig. 6, or the pattern holes that Fig. 3 and multiple through holes illustrated in fig. 5 are formed Area, describes as the architectural characteristic of Fig. 2, Fig. 4, through hole illustrated in fig. 6, can refer to retouching for Fig. 2, Fig. 4 and Fig. 6 above State, and the architectural characteristic of Fig. 3 and pattern holes area illustrated in fig. 5 inner via hole describes, and can refer to above for Fig. 3's and Fig. 5 Description.
It is corresponding, as shown in figure 9, four flexible substrates can be formed after the flexible base board cutting that the protective film is attached, Each flexible substrate formed with display device 3, wherein, four flexible substrates include the first flexible substrate 11, the second flexible substrate 12, the 3rd flexible substrate 13 and the 4th flexible substrate 14, four display devices include the first display device 301, second display Part 302, the 3rd display device 303 and the 4th display device 304, and the first display device 301 is located at the first flexible substrate 11, the Two display devices 302 are located at the second flexible substrate 12, and the 3rd display device 303 is located at the 3rd flexible substrate 13, the 4th display Part 304 is located at the 4th flexible substrate 14.
When protective film is attached to flexible base board away from the surface of all displays part, the first film monomer 21 and first is flexible Matrix 11 corresponds to, and the second film monomer 22 is corresponding with the second flexible substrate 12, and tertiary membrane monomer 23 is corresponding with the 3rd flexible substrate 13, 4th film monomer 24 is corresponding with the 4th flexible substrate 14.
Specifically, as shown in Fig. 8 and Figure 15, display device 3 divides for display area 30, routing region 31 and binding region 32, routing region 31 extends to binding region 32 for the electric conduction routing 6 of display device 3 from display area 30, in binding region 32 It is interior to be bound together by patchboard and circuit board 5.Since 180 ° of bendings occur for flexible base board so that display area 30 is positioned at soft Property substrate front, binding region 32 is located at the back side of flexible base board, and the protection that binding region 32 is attached with flexible base board During film is opposite, and the electric conduction routing 6 of routing region 31 extends to binding region 32 from display area 30, occur as flexible 180 ° of the same bendings of substrate, and the region of conductive flexible generation bending is overlapped with the regional location of flexible base board generation bending, Therefore, by opening up through hole on protection membrane body so that after protective film attaches to flexible base board, flexible base can not only be reduced The radius bend of plate, but also the extruding force that electric conduction routing 6 occurs for flexible base board 1 region of bending can be reduced, avoid leading The regional fracture of bending occurs for electric cabling 6.
And it is excessive in view of laser energy, when laser ablation protective film corresponds to the part of flexible base board generation bending region, The protective film for being easy to cause soft texture corresponds to the nubbin of bending region and is hardened, under the bending effect for causing flexible base board Drop, therefore, needs the region of perforate to open up at least one through hole, to avoid guarantor using non-hot melting process in the protection membrane body Cuticula hardens because of denaturing problem, while can also avoid excessive, the caused flexible base board letter of sharp removal Protective coatings The problem of relying property poor.Non- hot melting process for mill disappear technique, cutting technique, successively scrape taking technique or photoetching process.
Exemplary, as shown in figure 4, radial direction of the embodiment of the present invention along through hole 20, the section of through hole 20 is circle Section, along the axial direction of through hole 20, the section of through hole 20 is arcuation section.For the through hole 20 of this structure, generally adopt With mill disappear wheel 81 protection membrane body 2 on open up through hole 20, specific operation process is shown in Figure 10.
As shown in fig. 6, radial direction of the embodiment of the present invention along through hole 20, the section of through hole 20 for rectangular section (i.e. Four side sections), along the axial direction of through hole 20, the section of through hole 20 is trapezoidal cross-section.For this structure, such as Figure 11 and figure Shown in 12, generally through hole 20 is opened up on protection membrane body 2 using cutter 82 or scraper;Using cutter in protection membrane body Through hole 20 is opened up on 2 and sees Figure 11, opening up through hole 20 on protection membrane body 2 using scraper sees Figure 12, wherein, protected using scraper When opening up through hole 20 on cuticula body 2, usually successively scraping protection membrane body 2 needs the region of perforate.
It is, of course, also possible to utilize exposure imaging principle so that photoetching process needs the region of perforate to open in protection membrane body 2 If at least one through hole 20.It is appreciated that for photoetching process perforate, suitable for needing to open in protection membrane body 2 The more situation of the quantity in hole, and disappeared wheel 81, cutter 82 and scraper perforate using mill, then being suitable for protection membrane body 2 needs The less situation of the open amount wanted.
Such as:Flexible display as shown in Fig. 7, Fig. 9 and Figure 15, can be formed first more on a flexible substrate 1 when making A display device 3, then deviates from the surface of display device 3 in flexible base board 1, that is, attaches and protect at the back side of flexible base board 1 Cuticula a so that protective film can be attached to the surface that flexible base board 1 deviates from multiple display devices 3, so be cut using laser After cutting flexible base board 1, the making of multiple flexible panels has just been done directly, bending region is corresponded to protective film without laser Part is open, and has prevented adverse effect of the laser to bending region completely.
Such as Fig. 2-Fig. 7, and shown in Figure 13, the embodiment of the present invention additionally provides a kind of production method of said protection film, The production method of the protective film includes the following steps:
Step S101:One protection membrane body 2 is provided,
Step S102:The flexible base board 1 that the protection membrane body 2 needs to attach is obtained, which includes flex area Domain and flat region and at least one flat region;
Step S103:According to protection membrane body 2 and bending region correspondence, obtaining protection membrane body 2 needs perforate Region;
Step S104:Need the region of perforate to open up at least one through hole 20 in protection membrane body 2, obtain protective film, often A bending region at least corresponds to a through hole 20, when protective film is attached to flexible base board 1, orthographic projection of the through hole 20 in flexible base board 1 Positioned at bending region.
Compared with prior art, the guarantor that the production method of protective film provided in an embodiment of the present invention is provided with above-described embodiment The beneficial effect of cuticula is identical, and this will not be repeated here.
It should be noted that in the embodiment of the present invention protective film can also include patch release film 2 ', can not also include from Type film 2 ', it is not described here in detail.
Exemplary, needing the region of perforate to open up at least one through hole 20 in protection membrane body 2 includes:
Needing the region of perforate to open up at least one through hole in the protection membrane body includes:
The region of perforate is needed to open up at least one through hole in the protection membrane body using non-hot melting process;Wherein, institute State non-hot melting process for mill disappear technique, cutting technique, successively scrape taking technique or photoetching process.
As shown in Figure 10, during mill disappears technique, the region of perforate is needed to open up at least in protection membrane body 2 using the wheel 81 that disappears is ground One through hole 20;As described in Figure 11, in cutting technique, the region of perforate is needed to open up in protection membrane body 2 using cutter 82 At least one through hole 20;As shown in figure 12, successively scrape in taking technique, needed using scraper (Figure 12 is not shown) in protection membrane body 2 Want the region of perforate to open up at least one through hole 20, need the region of perforate to open up at least one in protection membrane body 2 using scraper During a through hole 20, usually successively scraping protection membrane body 2 needs the region of perforate.
Photoetching process can certainly be used to need the region of perforate to open up at least one through hole 20 in protection membrane body 2, Photoetching process is particularly suitable for a fairly large number of situation that protection membrane body 2 needs to be open.
Such as Fig. 2-Fig. 9, and described in Figure 15, the embodiment of the present invention additionally provides a kind of flexible panel, which wraps Include the protective film that flexible base board 1 and above-described embodiment provide.
Compared with prior art, the beneficial effect of flexible panel provided in an embodiment of the present invention is provided with above-described embodiment The beneficial effect of protective film is identical, and this will not be repeated here.
The embodiment of the present invention additionally provides a kind of display device, which includes the flexible face that above-described embodiment provides Plate.
Compared with prior art, the beneficial effect of display device provided in an embodiment of the present invention is provided with above-described embodiment The beneficial effect of protective film is identical, and this will not be repeated here.
Wherein, the display device that above-described embodiment provides can be mobile phone, tablet computer, television set, display, notebook Any product or component with display function such as computer, Digital Frame or navigator.
As shown in Fig. 2-Fig. 9, Figure 14 and Figure 15, the embodiment of the present invention additionally provides a kind of production method of display device, The production method of the display device includes the following steps:
Step S201:One flexible base board 1 is provided;The surface of flexible base board 1 is formed with luminescent device 3;
Step S202:Protective film is attached away from the surface of luminescent device 3 in flexible base board 1, obtains flexible panel;Flexible face Plate is the protective film that above-described embodiment provides;It is understood that protection membrane body 2 deviates from luminescent device 3 with flexible base board 1 Surface contacts;
Step S204:Flexible panel is subjected to bending so that flexible panel is bound together with circuit board 5, is shown Device.
Compared with prior art, the beneficial effect of the production method of display device provided in an embodiment of the present invention and above-mentioned reality Apply example offer protective film beneficial effect it is identical, this will not be repeated here.
Wherein, in step s 201, glass plate is generally formed with away from the surface of luminescent device 3 in flexible base board, with branch Flexible base board carrying luminescent device 3 is supportted, therefore, in step 202, if pasted in flexible base board 1 away from the surface of luminescent device 3 Attached protective film, it is necessary to first remove the glass plate that flexible base board is formed away from the surface of luminescent device 3.
As shown in figure 9, when the quantity for the luminescent device 3 that the surface of flexible base board 1 is formed is multiple, above-mentioned step Suddenly further included between S202 and step S204:
Step S203:Cut flexible base board 1 so that multiple luminescent devices 3 on flexible base board 1 are distributed after dicing each On a flexible base board, i.e., there is a luminescent device on the flexible base board after each cutting, it is more this makes it possible to disposably complete The making of a flexible panel.
In addition, before flexible base board 1 is cut, top protective film 4 can also be pasted in the display surface of display device 3, so It just can disposably complete the protection of the display surface of multiple display devices.And flexible base board is pasted away from the surface of display device Attached protective film is then used as bottom protective film, protects flexible base board.
Specifically, as shown in Figure 8 and Figure 9, display device 3 includes display area 30, routing region 31 and binding region 32, Electric conduction routing 6 extends to binding region 32, and is connected with the patchboard in binding region 32.As shown in figure 15, flexible panel is worked as Carry out 180 ° of bendings when, the electric conduction routing 6 of routing region 31 is also bent accordingly, and binding region 32 flexible panel into After 180 ° of bendings of row, positioned at flexible base board away from direction where display device surface, and with flexible base board away from display device The protective film that surface is attached is opposite.At this time, protective film is bonded with binding region 32 by tack coat 7, then passes through binding Circuit board 5 is tied on patchboard by technique, obtains display device.
In the description of the above embodiment, particular features, structures, materials, or characteristics can be in any one or more Combined in an appropriate manner in a embodiment or example.
The above description is merely a specific embodiment, but protection scope of the present invention is not limited thereto, any Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be contained Cover within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.

Claims (10)

1. a kind of protective film, for pasting on flexible substrates, the flexible base board includes flat region and at least one flex area Domain;It is characterized in that, the protective film includes protection membrane body, and at least one through hole being opened on protection membrane body, Each bending region at least corresponds to a through hole;When the protective film is attached to flexible base board, the through hole is in the flexibility The orthographic projection of substrate is positioned at the corresponding bending region.
2. protective film according to claim 1, it is characterised in that when the quantity of the through hole is M, per N number of described logical Hole forms pattern holes area, and the quantity in the pattern holes area is identical with the quantity of the bending region;M=kN, M, N are big In the integer equal to 2, k is the integer more than or equal to 1;
When the protective film is attached to flexible base board, the pattern holes area is corresponded with the bending region, and the pattern leads to The through hole of porose area is located at the corresponding bending region in the orthographic projection of the flexible base board;
The bending degree of bending position is 0~90 ° in the bending region, and the via densities in the pattern holes area are with bending degree Increase and increase;The bending degree of bending position is 90 °~180 ° in the bending region, and the through hole in the pattern holes area is close Degree reduces with the increase of bending degree.
3. protective film according to claim 2, it is characterised in that the pattern holes region includes two through hole rarefactions And positioned at the through hole compact district of two through hole rarefactions;The via densities of the through hole compact district are more than the through hole rarefaction Via densities.
4. according to claims 1 to 3 any one of them protective film, it is characterised in that each through hole for radical length by Decrescence small through hole;When the protective film is attached to the flexible base board, the through hole contacts the footpath of one end of the flexible base board It is minimum to length.
5. protective film according to claims 1 to 3, it is characterised in that along the radial direction of the through hole, the through hole Section be circle section or polygon section;Along the axial direction of the through hole, the section of the through hole is arcuation section or ladder Shape section.
A kind of 6. production method of any one of Claims 1 to 5 protective film, it is characterised in that including:
One protection membrane body is provided,
Obtaining the protection membrane body needs the flexible base board that attaches, the flexible base board include bending region and flat region and At least one flat region;
According to the protection membrane body and the bending region correspondence, obtaining protection membrane body needs the region of perforate;
Need the region of perforate to open up at least one through hole in the protection membrane body, obtain protective film, each flex area Domain at least corresponds to a through hole, and when the protective film is attached to flexible base board, the through hole is in the orthographic projection position of the flexible base board In the correspondence bending region.
7. the production method of protective film according to claim 6, it is characterised in that need perforate in the protection membrane body Region open up at least one through hole and include:
The region of perforate is needed to open up at least one through hole in the protection membrane body using non-hot melting process;Wherein, it is described non- Hot melting process for mill disappear technique, cutting technique, successively scrape taking technique or photoetching process.
8. a kind of flexible panel, it is characterised in that including flexible base board and protective film, the protective film is appointed for Claims 1 to 5 One protective film.
9. a kind of display device, it is characterised in that including the flexible panel described in claim 8.
A kind of 10. production method of display device, it is characterised in that including:
One flexible base board is provided;The surface of the flexible base board is formed with luminescent device;
Protective film is attached away from the surface of luminescent device in the flexible base board, obtains flexible panel;The flexible panel is power Profit requires 8 flexible panels;
The flexible panel is subjected to bending so that the flexible panel is bound together with circuit board, obtains display device.
CN201810054048.9A 2018-01-19 2018-01-19 A kind of protective film and preparation method thereof, flexible panel, display device and preparation method thereof Pending CN107976725A (en)

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Application publication date: 20180501