CN103909758A - Flexible printed circuit board and manufacturing method thereof and method for manufacturing substrate for liquid crystal panel - Google Patents
Flexible printed circuit board and manufacturing method thereof and method for manufacturing substrate for liquid crystal panel Download PDFInfo
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- CN103909758A CN103909758A CN201310409950.5A CN201310409950A CN103909758A CN 103909758 A CN103909758 A CN 103909758A CN 201310409950 A CN201310409950 A CN 201310409950A CN 103909758 A CN103909758 A CN 103909758A
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- printed board
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
- B41N1/00—Printing plates or foils; Materials therefor
- B41N1/12—Printing plates or foils; Materials therefor non-metallic other than stone, e.g. printing plates or foils comprising inorganic materials in an organic matrix
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/027—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds
- G03F7/032—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds with binders
- G03F7/033—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds with binders the binders being polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds, e.g. vinyl polymers
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- Spectroscopy & Molecular Physics (AREA)
- Chemical & Material Sciences (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Optics & Photonics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Printing Plates And Materials Therefor (AREA)
- Liquid Crystal (AREA)
- Manufacture Or Reproduction Of Printing Formes (AREA)
Abstract
The invention provides a flexible printed circuit board capable of reducing wearing and allowing long-time use through contact force distributed among anilox rollers between and a method for manufacturing the flexible printed circuit board. For the flexible printed circuit board (1), a printed surface (2) is roughened to make the avarage length RSm of rough curve factors 0.1 to 0.5 times of the distance PA of the matched anilox rollers (4) along the surface direction of bumpy patterns. In the manufacturing method, photosensitive resin composite layer is formed on the profile surface of the printed side and irradiated by active rays to cure the layers of the photosensitive resin composite.
Description
Technical field
The present invention relates to be suitable for use in the flexible printed board and the manufacture method thereof that form liquid crystal orientation film of such as substrate for liquid crystal panel etc. through flexible printing, and used the manufacture method of the substrate for liquid crystal panel of flexible printed board.
Background technology
In order to form liquid crystal orientation film on the electrode forming surface of substrate for liquid crystal panel, work out use print process, especially flexible printing method.
Require liquid crystal orientation film even thickness and free of pinholes etc. and thin as far as possible.
Therefore,, for the printing surface of the flexible printed board of flexible printing (keeping the face of ink when the printing), must there is high retentivity with respect to the ink of the raw material that becomes liquid crystal orientation film.That is, even require printing surface to there is a small amount of ink corresponding with the thickness of liquid crystal orientation film, can there are not wrinkle yet or expose the style of calligraphy characterized by hollow strokes etc., and can keep the good retentivity of thickness as far as possible uniformly on the whole surface of printing surface.
In order to improve the retentivity of ink of printing surface, make printing surface be concaveconvex shape, increase specific area, improve the wellability of printing surface to ink.
For example in patent documentation 1,2, there is following record: by the more microspike with geometrical plane shapes such as circles is set on printing surface, via many microspikes and the ditch portion between them, make printing surface be concaveconvex shape, thus, can make this printing surface improve the wellability of ink.
In addition, in patent documentation 1,2, also record: by making the difference such as size, distribution, arrangement of face direction of microspike, can at random control wellability by the region in printing surface.
Microspike for example can form by photoetching process.; prepare by become flexible printing board raw material photosensitive polymer combination layer; and the overlapping mask being formed by the negative or positive film that is formed with the trickle pattern (dot pattern etc.) corresponding with the flat shape of microspike on this layer; expose in this state; after photosensitive polymer combination is optionally cured corresponding to the pattern of mask, develop making, remove uncured photosensitive polymer combination; thus, form many microspikes.
In addition, in patent documentation 3, there is following record: use the method for roughening arbitrarily of such as etching or sandblast etc. to make printing surface roughening, thereby form the male and fomale(M&F)s such as such as pears surface, and its surface roughness is defined as and is expressed as 1～5 μ m with center line average roughness Ra.This male and fomale(M&F) is have unlike microspike shape or size rule random concavo-convex.
Patent documentation 1: TOHKEMY 2002-293049 communique
Patent documentation 2: No. 2933790 communique of TOHKEMY
Patent documentation 3: TOHKEMY 2009-34913 communique
In flexible printing, for example have the anilox roll of relief pattern (ANILOX(registration mark) via possessing on one side on outer peripheral face) supply with ink to the printing surface that is wrapped in the flexible printed board on printing plate cylinder, the printing surface that makes on one side flexible printed board squeegee pressure is in accordance with regulations contacted with the electrode forming surface of substrate for liquid crystal panel etc. and is printed face, thus, the ink logo corresponding with the printed patterns that is formed at printing surface is printed to this and is printed on face.
Because anilox roll is generally formed by metal, and the relief pattern of its outer peripheral face to be generally formed the tops such as pyramid shape be the shape of having fined away, so along with repeatedly printing, the printing surface of the flexible printed board contacting with anilox roll gradually weares and teares.
In order to reduce wearing and tearing, to extend life-span of flexible printed board, expect the concavo-convex of printing surface by dwindling as much as possible flexible printed board, the number of connections of the protuberance of anilox roll and the protuberance of printing surface is increased, contact is between the two disperseed as much as possible.
But, concavo-convex for the printing surface forming by photoetching process, there are the following problems: consider from the limit of the resolution ratio of mask, the spacing of concavo-convex face direction can not be made as below 35 μ m, thus the effect that can not obtain fully disperseing contact.
Summary of the invention
The object of the invention is, provide the contact that can be dispersed between anilox roll to reduce wearing and tearing, and the flexible printed board that can use for a long time and manufacture method thereof, and used the manufacture method of the substrate for liquid crystal panel of flexible printed board.
The present invention is via the anilox roll that possesses relief pattern on outer peripheral face, the flexible printed board that the flexible printing printing on one side to flexible printed board supply ink on one side uses, it is characterized in that, be roughened for tabular and the above-mentioned printing surface of printing surface being formed one side, and 0.1 times of the formation spacing of the face direction of the average length RSm of the roughness curve key element of the above-mentioned printing surface relief pattern that is anilox roll is above below 0.5 times.
In order to solve above-mentioned problem, inventor discusses following problem: by the spacing of concavo-convex face direction as form by photoetching process concavo-convex the spacing of concavo-convex face direction in the printing surface recorded in not confined, patent documentation 3 specify that the contact being dispersed between anilox roll reduces wear than in the closely spaced certain limit of formation of the face direction of the relief pattern of the anilox roll matching.
Its result, if find the average headway of the concavo-convex face direction of regulation printing surface, the JIS B0601:2001 of Japanese Industrial Standards " geometrical property specification (the GPS)-surface texture of product: contour curve mode-term, definition and surface texture parameter " in the average length RSm of roughness curve key element of printing surface of regulation be defined as below 0.5 times of formation spacing of the relief pattern of the anilox roll matching, can increase the number of connections of the protuberance of anilox roll and the protuberance of printing surface, contact is between the two disperseed as much as possible, and can reduce wear and extend the life-span of flexible printed board.
; 0.5 times of formation spacing that exceedes the relief pattern of anilox roll at the average length RSm of roughness curve key element; because the number of connections of the protuberance of the printing surface of flexible printed board and the protuberance of anilox roll tails off; can not obtain the effect that contact is between the two disperseed; so along with repeatedly printing, thereby lifetime of printing surface wearing and tearing flexible printed board.
In addition, because the concaveconvex shape of printing surface becomes excessive, so from this printing surface when being printed the transfer printing of ink of face, the inhomogeneous change of transfer printing of ink is large.Therefore, also there are the following problems: becoming can not be by so-called self leveling by the smoothing fully of the ink after transfer printing, and the surperficial flatness of the such as liquid crystal orientation film being formed by ink reduces or in uneven thickness and generation pin hole etc.
On the other hand, 0.1 times of formation spacing that is less than the relief pattern of anilox roll at the average length RSm of roughness curve key element, because the concaveconvex shape of printing surface is too small, become the effect of maintenance dose that can not be improved based on the wellability of this concavo-convex printing surface to ink and ink are set.Therefore, can not form even thickness and free of pinholes and there is liquid crystal orientation film of the thickness of regulation etc.
On the other hand, by the average length RSm of the roughness curve key element of the average headway of the concavo-convex face direction of regulation printing surface being defined as in 0.1 times of above 0.5 times of following scope of formation spacing of the face direction of the relief pattern of the anilox roll matching, can form even thickness and free of pinholes etc. and there is the liquid crystal orientation film etc. of the thickness of regulation, and make to provide the long-term flexible printed board using of wearing and tearing I to become possibility.
The present invention is the manufacture method of flexible printed board, it is characterized in that, comprising: prepare to comprise the operation that has the material of penetrability and one side and be set as the mould of the figuration face corresponding with the shape of the printing surface of flexible printed board with respect to dynamic rays; Contact the mode of the figuration face of mould with photosensitive polymer combination, the operation of the layer of stacked photosensitive polymer combination on the figuration face of mould; See through mould and irradiate dynamic rays, make photosensitive polymer combination layer through curing reaction and curing operation; The operation that the photosensitive polymer combination layer having solidified is peeled off from the figuration face of mould; And, the photosensitive polymer combination layer after peeling off is made to the operation of flexible printed board.
According to the present invention, can manufacture at low cost printing surface to high production rate and be defined as the flexible printed board of particular surface state.
Preferably, the photosensitive polymer combination after peeling off being made in the operation of flexible printed board: the face (face contacting with figuration face) that the figuration face from mould of photosensitive polymer combination layer has been peeled off is as the printing surface being roughened, and the operation of removing the rough surface of the printing surface beyond the region corresponding with printed patterns with machinery or heating.
The operation of preparing mould also can comprise following operation: preparation comprises hard material and has the operation of the supporting substrates of the penetrability to dynamic rays; Make the face with figuration face opposition side of mould contact surface and the fixing operation of supporting substrates.
Can use and comprise prepolymer, there is the monomer of at least a kind of ethene unsaturated group and the composition of Photoepolymerizationinitiater initiater as the photosensitive polymer combination of raw material that becomes flexible printed board.
The present invention is the manufacture method of substrate for liquid crystal panel, it is characterized in that, comprising: utilize flexible printed board of the present invention, form the operation of liquid crystal panel liquid crystal orientation film by flexible printing.
According to the present invention, based on the surface configuration of printing surface of explanation before, can manufacture the substrate for liquid crystal panel of the liquid crystal orientation film that possesses the good and free of pinholes of the repeatability of even thickness and thickness.
According to the present invention, can provide because the contact that can more be dispersed between anilox roll compared with present situation reduces wear, thereby the flexible printed board that can use for a long time and manufacture method thereof, and use the manufacture method of the substrate for liquid crystal panel of flexible printed board.
Brief description of the drawings
Fig. 1,, Fig. 1 (a) is (b) position relationship to the protuberance of the printing surface being roughened in flexible printed board of the present invention and the protuberance of anilox roll, the schematic diagram describing by the difference of the average length RSm of the roughness curve key element of printing surface.
Fig. 2,, Fig. 2 (a) (b) be represent by the formation spacing of the face direction of the shape of anilox roll, relief pattern the top view of prescriptive procedure.
Fig. 3,, Fig. 3 (a)～(c) be the cutaway view that the manufacturing process of flexible printed board is described.
Fig. 4,, Fig. 4 (a)～(c) be the cutaway view that the subsequent handling of the manufacture method to Fig. 3 describes.
Fig. 5,, Fig. 5 (a) is (b) cutaway view that example describes of the surperficial method to the dismounting of roughening plate being fixed on freely to flat supporting substrates.
Description of reference numerals:
1 ... flexible printed board; 2 ... printing surface; 3 ... protuberance; 4 ... anilox roll; 5 ... protuberance; 6 ... supporting substrates; 7 ... surface; 8 ... figuration face; 9 ... roughening plate; 10 ... opposing face; 11 ... photosensitive polymer combination; 12 ... strengthening membrane; 13 ... layer; 14 ... counter substrate 15 ... opposed faces 16 ... duplexer; 17 ... workbench; 18 ... laser head; 19 ... carbon dioxide gas volumetric laser; C ... chuck clamps; P
aform spacing; Xs(Xs1, Xs2 ... Xsi) ... the length of contour curve key element
Detailed description of the invention
Fig. 1 (a) is (b) position relationship to the protuberance of the printing surface being roughened in flexible printed board of the present invention and the protuberance of anilox roll, the schematic diagram describing by the difference of the average length RSm of the roughness curve key element of printing surface.
The present invention is formed tabular, and one side is the flexible printed board of printing surface.And printing surface is roughened, and the average length RSm of the roughness curve key element of printing surface is that 0.1 times of formation spacing of the face direction of the relief pattern of the anilox roll that matches is above below 0.5 times.
In addition, in the present invention, the roughness curve obtaining from for example measuring with sweep type confocal laser microscope, the length X s's of the contour curve key element in such datum length of recording in the 4.3.1 item " average length of contour curve " using the average length RSm of roughness curve key element as JISB0601:2001 is average, tries to achieve by following formula (1).
[formula 1]
Formula 1
According to the present invention, by the concaveconvex shape of the printing surface that regulation is roughened as described above, can form even thickness and free of pinholes etc. and there is the liquid crystal orientation film etc. of the thickness of regulation, make to provide wearing and tearing flexible printed board little and that can use for a long time to become possibility.
; with reference to Fig. 1 (b); from form flexible printed board 1 printing surface 2 each protuberance 3 contour curve key element length X s(Xs1, Xs2 ... Xsi), utilize above-mentioned formula (1) and the average length RSm of the roughness curve key element of trying to achieve exceedes the formation spacing P of the face direction of the relief pattern of the anilox roll 4 matching
athe situation of 0.5 times under, the protuberance 3 of the printing surface 2 of flexible printed board 1 tails off with the number of connections of the protuberance 5 of anilox roll 4, thereby due to the effect that can not obtain contact is between the two disperseed, so along with repeatedly printing, the protuberance 3 that forms printing surface 2 weares and teares, thus the lifetime of flexible printed board 1.
And, because the size of the short transverse of the concaveconvex shape of printing surface 2 also becomes excessive, thus from this printing surface 2 when being printed the transfer printing of ink of face, the inhomogeneous change of transfer printing of ink is large.Therefore, may occur following problem: becoming can not be by so-called self leveling by the smoothing fully of the ink after transfer printing, the surperficial flatness of the such as liquid crystal orientation film being formed by ink reduces or is in uneven thickness and produce pin hole etc.
On the other hand, with reference to Fig. 1 (a), if by from form flexible printed board 1 printing surface 2 each protuberance 3 contour curve key element length X s(Xs1, Xs2 ... Xsi), the average length RSm of the roughness curve key element of utilizing above-mentioned formula (1) and try to achieve, is made as the formation spacing P of the face direction of the relief pattern of the anilox roll 4 matching
abelow 0.5 times, thereby increase the protuberance 3 of printing surface 2 and the number of connections of the protuberance 5 of anilox roll 4 of flexible printed board 1, bear owing to contact between the two can being scattered in to multiple protuberances 3, so thereby the life-span that extends flexible printed board 1 that makes to reduce wear become possibility.
But, if the average length RSm of roughness curve key element is less than the formation spacing P of the in-plane of the relief pattern of the anilox roll 4 matching
a0.1 times, the size of the short transverse of the concaveconvex shape of printing surface 2 becomes too small, thereby becomes the effect of maintenance dose that can not be improved based on the wellability of this concavo-convex printing surface 2 to ink and ink are set.Therefore, generation can not form even thickness and free of pinholes etc. and have the problem of liquid crystal orientation film of specific thickness etc.
Therefore, the average length RSm of roughness curve key element is limited at the formation spacing P of the face direction of the relief pattern of the anilox roll 4 matching
amore than 0.1 times.Thus, can form even thickness and free of pinholes etc. and there is liquid crystal orientation film of specific thickness etc.
In addition, in order further to improve these effects, preferably the average length RSm of roughness curve key element is for forming spacing P
a0.3 times above below 0.4 times.
Without particular limitation of the concrete size of average length RSm.By the formation spacing P of the anilox roll 4 with respect to matching
athe mode that becomes afore mentioned rules multiple is set size.
The common formation spacing P of anilox roll 4
abe 21～141 μ m left and right.
Therefore, will with for example form spacing P
abe that the average length RSm of the roughness curve key element of the printing surface 2 of the flexible printed board 1 that matches of the anilox roll 4 of 63.5 μ m is set in that 6.35 μ m are above, in scope below 31.75 μ m.
Fig. 2 (a) is (b) top view representing by the prescriptive procedure of the formation spacing of the face direction shape of anilox roll 4, relief pattern.
For example, with reference to Fig. 2 (a), bottom surface is formed as foursquare rectangular pyramid shape (pyramid), and a diagonal of bottom surface is towards the direction parallel with circumferential (the representing with solid arrow in the drawings) of anilox roll 4, another diagonal towards with the orthogonal width of Zhou Fangxiang, equally spaced arrange each protuberance 5 that forms relief pattern, in the case of the anilox roll 4 of this so-called diamond pattern, by and circumferentially the distance between the summit of orthogonal protuberance 5 width, adjacent be made as above-mentioned formation spacing P
a.
And, with reference to Fig. 2 (b), bottom surface is formed as orthohexagonal hexagonal pyramid shape, and a diagonal of bottom surface towards with circumferential (the representing with solid arrow in the drawings) of anilox roll 4 orthogonal width, other two diagonal respectively towards the direction with respect to circumferential 30 °, equally spaced arrange each protuberance 5, in the case of the anilox roll 4 of this so-called honeycomb pattern, the distance between the summit of the direction with respect to circumferential 30 °, adjacent protuberance 5 is made as to above-mentioned formation spacing P
a.
And, though not shown, but a diagonal of the bottom surface of the protuberance 5 of hexagonal pyramid shape towards with the circumferential parallel direction of anilox roll 4, other two diagonal are respectively towards the direction with respect to circumferential 60 °, in the situation of anilox roll 4 of the honeycomb pattern of equally spaced arranging, by and circumferentially the distance between the summit of the adjacent protuberance 5 of orthogonal width be made as above-mentioned formation spacing P
a.
For the printing surface of flexible printed board 12 being made as to the concaveconvex shape of the scope of the average length RSm that meets roughness curve key element, the figuration face of the mould corresponding with printing surface 2 is formed as meeting the concaveconvex shape of above-mentioned scope in the manufacture method of the flexible printed board of the present invention next describing.
And, for figuration face being formed as meeting the concaveconvex shape of above-mentioned scope, in the case of carrying out roughened formation this figuration face by for example increased pressure board moulding with following knurling rolls, the outer peripheral face of knurling rolls is formed as meeting to the concaveconvex shape of above-mentioned scope.
Particularly, for example, in the situation that knurling rolls are metallic roll, by methods such as etching, sandblast, laser engravings, and in the situation that knurling rolls are rubber rollers, by methods such as dress mould, grinding, minute impurities, in the situation that knurling rolls are resin roll, by methods such as dress mould, grinding, etching, minute impurities, can make this outer peripheral face be concaveconvex shape.
Wherein, in the time for example making the outer peripheral face of metallic roll be concaveconvex shape by sandblast, for the average length RSm of this roughness curve key element is made as in above-mentioned scope, control particle diameter (more than F600) and the sandblast time of the sand powder using.
Can manufacture flexible printed board of the present invention by manufacture method of the present invention.Therefore, can manufacture at low cost printing surface to high production rate and be defined as the flexible printed board of particular surface state.
Fig. 3 (a)～(c), Fig. 4 (a)～(c) are respectively the cutaway view that the manufacturing process of flexible printed board is described.
With reference to Fig. 3 (a), in this routine manufacture method, first prepare to comprise the hard material of hard resins such as glass or allyl resin, polycarbonate resin, mylar etc., and have with respect to the supporting substrates 6 of penetrability of ultraviolet isoreactivity ray that can make photosensitive polymer combination generation curing reaction.
Then, the surface 7 of the upside in the figure of above-mentioned supporting substrates 6, one side is set as to figuration face 8(figuration face 8 and has the surface being roughened of the concaveconvex shape corresponding with the shape of the printing surface of flexible printed board) roughening plate 9, press figuration face 8 upwards, the downward mode of face (opposing face) 10 of opposition side, make opposing face 10 contact with surface 7 on one side, on one side for example as dashdotted arrow in Fig. 3 (a) is represented, little by little stacked etc. to the other end from its one end, thus dismounting is fixed freely.
In addition, although in the drawings, emphatically draw and form the concavo-convex of figuration face 8 significantly, to should be readily appreciated that, but, for the shape etc. of the liquid crystal orientation film to printing not exerts an influence, actual concavo-convex for meeting scope concavo-convex of average length RSm of roughness curve key element of the present application defined, and compare with the size of the roughening plate 9 shown in figure, for not judging the small concavo-convex of degree.
As roughening plate 9, preferably use increased pressure board moulding by using such as knurling rolls etc., carry out roughening and the plate that forms by comprising the thermoplastic resins such as such as polyethylene (PE), polypropylene (PP), TPUE (TPU), PETG (PET), tetrafluoroethene hexafluoropropylene copolymer (FEP) and having with respect to the surface of the plate of the penetrability of dynamic rays.
Described increased pressure board forming device has the following advantages: even for example large-area roughening plate 9 corresponding with the liquid crystal display cells of giant-screen also easily carries out continuous and a large amount of production.
In addition, the roughening plate 9 of the thermoplastic resin that comprises PE, PP, TPU geometric ratio softer and thinner (for example following degree of 150 μ m), itself sticky strength is little, is difficult to make it be close to equably the situation on the surface 7 of smooth supporting substrates 6 without CREASE MARK ground.
In this case, will comprise such as PET etc. and have that to stick on the opposing face 10 of roughening plate 9 with respect to the stiffener of the penetrability of dynamic rays first-class.
Cause is by the shearing force in the time that this roughening plate 9 is smeared aqueous photosensitive polymer combination, or convergent force when photosensitive polymer combination curing etc., in order to prevent that roughening plate 9 is with respect to supporting substrates 6 position skews, and the replacement of the roughening plate 9 after using becomes easy, therefore preferably by any one method in following (I)～(III) for example, 9 dismounting of roughening plate are fixed on freely to the surface 7 of supporting substrates 6.
(I), via comprising the weak adhesion coating having with respect to the material of the penetrability of dynamic rays, dismounting is adhered freely and is fixed on the surface 7 of supporting substrates 6.
(II) forms air-breathing groove on the surface of supporting substrates, and carries out vacuum suction via this air-breathing groove, thereby surface is fixed in dismounting sorption freely.
The state launching between a pair of chuck clamps that (III) separates with the larger interval of size of the face direction than supporting substrates 6, carrys out dismounting crimping freely and is fixed on the surface of supporting substrates.
As the fixing weak adhesion coating of the adhesion for (I), can adopt any one to comprise with respect to the formation material of supporting substrates 6 and roughening plate 9 and there is weak adherence and there is the layer with respect to the various stickers of the penetrability of dynamic rays.For weak adhesion coating, can be by the various coating method such as such as spray application, at least one side in the surface 7 of supporting substrates 6 and the opposing face 10 of roughening plate 9, apply sticker and form.
After weak adhesion coating is formed to the surface 7 of supporting substrates 6 and/or the opposing face 10 of roughening plate 9, if as shown in the dashdotted arrow in Fig. 3 (a), his end from the one end on the surface 7 of supporting substrates 6 to another, note not allowing air enter between opposing face 10 and surface 7 while stacked roughening plate 9 little by little,, by the adhesion strength of weak adhesion coating, roughening plate 9 can be fixed on surface 7.
And, for by fixing roughening plate 9 from surface 7 operations of taking off for, for example with the arrow of Fig. 3 (a) on the contrary, from the other end of supporting substrates 6 to one end, resist the adhesion strength of weak adhesion coating while little by little this roughening plate 9 peeled etc.
For the sorption of carrying out (II) is fixed, on the surface 7 of making smoothly supporting substrates 6, and this surface 7 roughly whole form air-breathing groove.Air-breathing groove is connected in the vacuum system that comprises vavuum pump etc.
Then, roughening plate 9 is overlapped under the state on surface 7 of supporting substrates 6 downwards opposing face 10, make vacuum system work, or the vacuum system that has made to start in advance work is connected with air-breathing groove etc., carry out vacuum suction via this air-breathing groove, roughening plate 9 can be fixed on thus to surface 7.
For by the roughening plate 9 of having fixed from for 7 operations of taking off of surface, vacuum system is quit work, or cuts off being connected of vacuum system and air-breathing groove.
Fig. 5 (a) is (b) cutaway view that the crimping fixing means of (III) is described.
With reference to these two figure, in this crimping fixation, prepare a pair of chuck clamps C, it keeps 2 limits that are parallel to each other that are for example formed as accordingly the roughening plate 9 of rectangular shape with the shape of the screen of liquid crystal display cells in the mode of the whole length across roughening plate 9.
As roughening plate 9, prepare the length L between 2 limits
1than the size L being formed as equally between the 2 corresponding limits of supporting substrates 6 of rectangular shape
2long plate, and 2 limits are kept by chuck clamps C in the mode across its whole length.Though not shown, roughening plate 9 keeps figuration face 8 with the state of the upside in figure.
Then, by separating than the size L of supporting substrates 6
2configuration card plate clamp C is carried out at longer interval, between two chuck clamps C, makes the state (Fig. 5 (a)) that roughening plate 9 is tight expansion.
Next under this state, if by chuck clamps C is moved to the below in figure, make to be deployed in roughening plate 9 between chuck clamps C shown in white hollow arrow in Fig. 5 (a), direction to the surface 7 of supporting substrates 6 declines, and as shown in Figure 4 (b), seamlessly be crimped on supporting substrates surface 7, roughening plate 9 can be fixed on to surface 7.
And, for by the roughening plate 9 of having fixed from for 7 operations of taking off of surface, this roughening plate 9 is moved upward from surperficial 7 on the contrary together with the arrow of a pair of chuck clamps C and Fig. 5 (a).
With reference to Fig. 3 (b), in this routine manufacture method, to being fixed on by above-mentioned any one method on the figuration face 8 of the roughening plate 9 on the surface 7 of supporting substrates 6, supply with the aqueous photosensitive polymer combination 11 of ormal weight.
Then, photosensitive polymer combination 11 is located in to roughening plate 9 and becomes between the strengthening membrane 12 of enhancement Layer on one side, on one side as shown in dashdotted arrow in Fig. 3 (b), from the one end on the surface 7 of supporting substrates 6 to the other end, little by little note not making air on the figuration face 8 of roughening plate 9, to smear photosensitive polymer combination 11 on one side in the middle of entering and form the layer 13 of photosensitive polymer combination, and photosensitive polymer combination layers 13 on stacked strengthening membrane 12.
Next,, with reference to Fig. 3 (c), the opposed faces 15 of counter substrate 14 is touched on strengthening membrane 12.
Then, make on one side to separate constant interval between the opposed faces 15 and surperficial 7 of counter substrate 14 and remain parallel, as shown in black arrow in Fig. 3 (c), by pressing counter substrate 14 to the direction of supporting substrates 6, make layer 13 be crimped on the figuration face 8 of roughening plate 9 on one side.
Then, in this state, as shown in solid arrow in Fig. 3 (c), see through supporting substrates 6 and roughening plate 9 and via dynamic rays LB, layer 13 is exposed, make the photosensitive polymer combination 11 that forms layer 13 that curing reaction occur.
At this moment, the interval between the surface 7 of supporting substrates 6 and the opposed faces 15 of counter substrate 14, the thickness that is maintaining the flexible printed board of manufacturing adds the size of the thickness of roughening plate 9.
In addition, counter substrate 14 can by metal, glass, hard resin etc. arbitrarily material form.
Especially, also can by counter substrate 14 by same with supporting substrates 6 have with respect to the material of the penetrability of dynamic rays form, in addition, strengthening membrane 12 also by same with roughening plate 9 have with respect to the material of the penetrability of dynamic rays form, the layer 13 of photosensitive polymer combination is exposed through dynamic rays from these counter substrate 14 sides, thereby make it to produce cross-linking reaction.
Next, with reference to Fig. 4 (a) (b), by strengthening membrane 12, the layer 13 being crosslinked and the duplexer 16 of roughening plate 9, from taking out between supporting substrates 6 and counter substrate 14, make it to reverse up and down, strengthening membrane 12 is loaded down on workbench 17.
Then, as shown in dashdotted arrow in Fig. 4 (b), if roughening plate 9 is little by little peeled to the other end from one end of duplexer 16, the upper surface side in layer 13 figure becomes the concaveconvex shape of the figuration face 8 that has been transferred roughening plate 9 and the printing surface 2 that is roughened.
Next, as shown in Figure 4 (c), by the region to beyond the region corresponding with printed patterns of printing surface 2, for example, scan and irradiate carbon dioxide gas volumetric laser 19 etc. from laser head 18, removing the concavo-convex of surface with mode of heating.Thus, printing surface 2 is patterned into the printed patterns of regulation, thereby completes flexible printed board 1.
As photosensitive polymer combination, can use the resin combination arbitrarily with following features: can by ultraviolet ray etc. dynamic rays solidify, and after solidifying, can form solidfied material, this solidfied material has suitable caoutchouc elasticities such as being applicable to such as flexible printing, and in the ink that uses with respect to when printing of this solidfied material, comprise or the solvent resistance of the solvent that uses when the cleaning of printed panel good.
As related photosensitive polymer combination, though be not limited to these, but still can enumerate: comprise and for example have 1,2-butadiene structure and there is endways the composition etc. of prepolymer, ethylene unsaturated monomer and the Photoepolymerizationinitiater initiater of the two keys of ethene.
As Photoepolymerizationinitiater initiater, preferably benzoyl alkyl ether, especially preferably use benzoyl containing the material below the 500ppm of the proportional total amount for photosensitive polymer combination.Wherein, benzoyl is the reason that makes the flavescence of printing resin master by reacting from the visible ray of fluorescent lamp etc.Thus, can obtain the good printing of the light resistance resin master of not flavescence at short notice.
As strengthening membrane 12, identical with roughening plate 9, can use thermoplastic resins such as comprising such as polyethylene (PE), polypropylene (PP), TPUE (TPU), PETG (PET), tetrafluoroethene hexafluoropropylene copolymer (FEP) and there is the plate with respect to the penetrability of dynamic rays.
The present invention is, comprises with flexible printed board and forms the manufacture method of the substrate for liquid crystal panel of the operation of the liquid crystal orientation film that liquid crystal panel uses by flexible printing.
According to the present invention, can manufacture and possess even thickness and thickness repeatability is good and the substrate for liquid crystal panel of the liquid crystal orientation film of free of pinholes.And the surface configuration of printing surface based on explanation before diminishes the wearing and tearing of flexible printed board, make 1 piece of flexible printed board of prolonged and repeated lasting use compared with present situation become possibility.
The operation of other of above-mentioned manufacture method, can similarly implement with existing method.
; manufacture by the following method substrate for liquid crystal panel: in the one side of the transparency carriers such as soda-lime glass substrate; form the transparent electrode layer corresponding with the matrix pattern etc. specifying; form liquid crystal orientation film by the flexible printing of having used flexible printed board of the present invention afterwards; further answer demand, by modes such as frictions, orientation process is carried out in the surface of liquid crystal orientation film.
In addition, prepare 2 pieces of substrate for liquid crystal panel, and under the state that each transparent electrode layer is aimed the place, sandwich betwixt liquid crystal material and interfix, and answer the two outsides configuration Polarizers of demand at duplexer, thus, manufacture liquid crystal panel.
The present invention is not limited to the example in the figure having described in the above.For example also can omit strengthening membrane 12.In addition, replace the layer to the direction press sense photosensitive resin composition of supporting substrates by counter substrate, also can smear to make constant thickness by the roller of roughening plate etc.
Other, not departing from the scope of main idea of the present invention, can implement various changes.
[embodiment]
< embodiment 1>
(roughening plate)
As roughening plate, use the plate using TPU surface as the figuration face of the increased pressure board moulding roughening by using knurling rolls.The surface of this TPU is, the surface of the TPU exposing to the opposition side of face being pasted with stiffener of the plate of TPU.The plate of this TPU is that thickness is that the PET plate of 100 μ m is pasted on the plate of TPU in one side as stiffener (シ Le Network ロ Application (registration mark) the SNESS80-150 μ of great Cang Industrial Co., Ltd system m).This roughening plate has with respect to the ultraviolet penetrability as dynamic rays.
According to using sweep type confocal laser microscope (the LEXT(registration mark of Olympus Co., Ltd system) OLS(registration mark) 3100) measure the roughness curve obtaining, the length X s's of the contour curve key element in such datum length of recording in the 4.3.1 item " average length of contour curve " using the average length RSm of the roughness curve key element of figuration face as JIS B0601:2001 is average, obtaining by above-mentioned formula (1), is 0.9 μ m.In addition, datum length is 270 μ m.
(manufacture of flexible printed board)
With reference to Fig. 3 (a)～(c), printing possesses the level and smooth transparency glass plate with ultraviolet penetrability and the counter substrate 14 as supporting substrates 6 with the manufacturing installation of resin master.And on the surface 7 in printing with the supporting substrates 6 of the manufacturing installation of resin master, by roughening plate 9 by its figuration face 8 upwards, opposing face 10 downwards, opposing face 10 and surface 7 modes that contact, layer carrying out dismounting and be fixed freely via spray sticker.
Next, on figuration face 8, supply with aqueous photosensitive polymer combination (sumitomo rubber Industrial Co., Ltd NK resin processed) 11 ormal weights of ultraviolet hardening on one side, and photosensitive polymer combination 11 is located in to roughening plate 9 and strengthening membrane (the PET film that becomes enhancement Layer, the BF/CF of sumitomo rubber Industrial Co., Ltd system) between 12, as shown in the dash-dot arrows in Fig. 3 (b), from the one end on the surface 7 of supporting substrates 6 to the other end, little by little note not making air enter in the middle of while on the figuration face 8 of roughening plate 9, smear photosensitive polymer combination 11, thereby form the layer 13 of photosensitive polymer combination, and at the folded strengthening membrane 12 in layer 13 upper strata of photosensitive polymer combination.
Next, the opposed faces 15 of counter substrate 14 is touched on strengthening membrane 12.
Then, on one side will opposed faces 15 with surface 7 between separate certain interval and remain parallel, as shown in black arrow as middle in Fig. 3 (c), press counter substrate 14 to the direction of supporting substrates 6 on one side, thus, make layers 13 figuration faces 8 that are crimped on roughening plate 9.
Then, in this state, as shown in solid arrow in Fig. 3 (c), see through supporting substrates 6 and roughening plate 9 and layer 13 is exposed through ultraviolet ray, making to form layers 13 photosensitive polymer combination 11 curing reaction occurs.Use the UV light source of PHILIPS Co.'s system as light source.
Next, with reference to Fig. 4 (a) (b), by strengthening membrane 12, the layer 13 being crosslinked and the duplexer 16 of roughening plate 9, from taking out between supporting substrates 6 and counter substrate 14, and make it to reverse up and down, strengthening membrane 12 is put down on workbench 17.
Then, as shown in dashdotted arrow in Fig. 4 (b), roughening plate 9 is little by little peeled to the other end from one end of duplexer 16, and the upper surface side in layer 13 figure becomes the concaveconvex shape of the figuration face 8 that has been transferred roughening plate 9 and the printing surface 2 that is roughened thus.
Next, as shown in Figure 4 (c), to the region beyond the region corresponding with printed patterns of printing surface 2, scan and irradiate carbon dioxide gas volumetric laser 19 from laser head 18, thereby this region is removed with mode of heating, thus, printing surface 2 is patterned to the printed patterns of regulation, thereby produces flexible printed board 1.
The condition of patterning is: the output of carbon dioxide gas volumetric laser: 400W × 2 bundle; Beam diameter: 20 μ m; Feeding pitch: 60 μ m; Feed speed 140cm/ second.
After patterning, be called KS-HG シ Application Na with Sun Chemical Co., Ltd's commodity processed and wash the dirt producing by melting water spray resin, after this, make it to be dried fully.
According to measuring with aforesaid sweep type confocal laser microscope the roughness curve obtaining, by the average length RSm of the roughness curve key element of the printing surface of flexible printed board 12, average as the length X s of the contour curve key element in same datum length, obtain by above-mentioned formula (1), result is 0.9 μ m.
From above result, can confirm following situation: the concaveconvex shape of the printing surface 2 of flexible printed board 1 is according to the concaveconvex shape that has verily copied the figuration face 8 of roughening plate 9.
By above-mentioned flexible printed board 1 with there is the diamond pattern shown in Fig. 2 (a) and form spacing P
abe the #400 of E-Materials Co., Ltd of the anilox roll 4(Asahi Chemical Industry system of 63.5 μ m) combination use.The average length RSm of roughness curve key element is for forming spacing P
a0.14 times.
< embodiment 2,3, comparative example 1,2>
Change for the knurling rolls of roughening are carried out in the TPU surface plate of the TPU identical with the TPU plate having used at embodiment 1, that expose with the opposition side of face that is pasted with stiffener by increased pressure board moulding, and the average length RSm that has prepared the roughness curve key element of figuration face 8 is the roughening plate 9 of the value shown in following table 1.
Then,, except each uses roughening plate 9 parts, all the other have manufactured flexible printed board 1 by the mode identical with embodiment 1.
Try to achieve the average length RSm of the roughness curve key element of the printing surface 2 of this flexible printed board 1 according to method same as described above, as described in Table 1, can confirm following situation: the concaveconvex shape of the printing surface 2 of flexible printed board 1 has verily copied the concaveconvex shape of the figuration face 8 of roughening plate 9.
[table 1]
Table 1
< physical device test >
(flexible printing)
Flexible printed board by each embodiment, comparative example manufacture and above-mentioned anilox roll #400(are formed to spacing P
a: 63.5 μ m) are applied in the flexible printing machine (the form A45 of Na カ Application テ Network ノ Co., Ltd system) that liquid crystal orientation film uses together.
Then, by (オ プ ト マ ー (registration mark) AL60702 of JSR Co., Ltd system of varnish for liquid crystal orientation film, contact angle with respect to soda-lime glass substrate is: 30 °), after on the soda-lime glass substrate that flexible printing is 0.7mm in thickness, at 120 DEG C, heat 30 minutes, make varnish predrying, thereby form liquid crystal orientation film.
The condition of setting flexible printing is: the thickness of the liquid crystal orientation film after predrying becomes
(original depth evaluation)
Measure the thickness of the liquid crystal orientation film after predrying, evaluate original depth by following benchmark.
00: thickness is
whole.
Zero: thickness is
in addition and
in.
×: thickness is
in addition.
(wear evaluation)
For above-mentioned original depth be evaluated as 00 or zero embodiment 1～3, comparative example 2, under condition same as described above, implement the continuous printing of 50,000 pieces, thereby and obtain at the thickness of flexible printed board wearing and tearing liquid crystal orientation film and be less than
the printing before printing piece number, has evaluated the reduction abrasive effect of flexible printed board by following benchmark.In addition, to being evaluated as of original depth × comparative example 1 do not carry out wear evaluation.
Before 000: 50,000 pieces, the thickness of liquid crystal orientation film is not less than
reduce abrasive effect very good.
00: more than 40,000 pieces, in the scope of 50,000 pieces of less thaies, the thickness of liquid crystal orientation film is less than
reduce abrasive effect good.
Zero: more than 30,000 pieces, in the scope of 40,000 pieces of less thaies, the thickness of liquid crystal orientation film is less than
reduction abrasive effect is mean level.
×: in the scope of 30,000 pieces of less thaies, the thickness of liquid crystal orientation film is less than
reduce abrasive effect bad.
(synthetic determination)
From the result of original depth evaluation and wear evaluation, carry out the quality of synthetic determination flexible printed board by following benchmark.
000: original depth be evaluated as 00 and wearability be 000 or 00 flexible printed board.
00: original depth is evaluated as 00 and the wearability flexible printed board that is zero; Or original depth be evaluated as zero and wearability be 000 or 00 flexible printed board.
Zero: original depth is evaluated as zero and the wearability flexible printed board that is zero.
×: any one party or two sides are × flexible printed board.
Above result is shown in Table 2.
[table 2]
Table 2
Known according to the result of the comparative example 1 of table 2: the formation spacing P of the face direction of the relief pattern of the anilox roll that the average length RSm deficiency of the roughness curve key element of the printing surface of flexible printed board matches
a0.1 times time, concaveconvex shape is too small, thereby becomes the effect of maintenance dose that can not be improved based on the wellability of this concavo-convex printing surface to ink and ink are set, and can not form liquid crystal orientation film of the original depth with regulation etc.
And, known according to the result of comparative example 2: to exceed and form spacing P at the average length RSm of roughness curve key element
athe situation of 0.5 times under, the number of connections of the protuberance of the printing surface of flexible printed board and the protuberance of anilox roll tails off, thereby due to the effect that can not obtain contact is between the two disperseed, wear and tear so printing surface becomes easy, thereby the lifetime of flexible printed board.
On the other hand, known according to the result of embodiment 1～3: to form spacing P by the average length RSm of roughness curve key element is made as
a0.1 times of above, 0.5 times of following scope in, can form even thickness and free of pinholes etc. and there is the liquid crystal orientation film etc. of the thickness of regulation, and can obtain the long-term flexible printed board using of wearing and tearing I.
In addition, known according to the result of embodiment 1～3: in order to improve effect, preferably the average length RSm of roughness curve key element is for forming spacing P
a0.3 times above, below 0.4 times.
Claims (6)
1. a flexible printed board, is the printed panel for flexible printing, and described flexible printing is via the anilox roll that possesses relief pattern at outer peripheral face, supplies with ink on one side print on one side to flexible printed board, and described flexible printed board is characterised in that,
Be roughened for tabular and the described printing surface of printing surface being formed one side, and 0.1 times of the formation spacing of the face direction of the average length RSm of the roughness curve key element of the described printing surface relief pattern that is anilox roll is above below 0.5 times.
2. a manufacture method for flexible printed board, is characterized in that, is the manufacture method of the flexible printed board of record in claim 1, comprising:
Preparation comprises the operation that dynamic rays is had the material of penetrability and one side and is formed as the mould of the figuration face corresponding with the shape of the printing surface of flexible printed board;
Contact the mode of the figuration face of mould with photosensitive polymer combination, the operation of the layer of stacked photosensitive polymer combination on the figuration face of mould;
See through mould and irradiate dynamic rays, make photosensitive polymer combination layer through curing reaction and curing operation;
The operation that the photosensitive polymer combination layer having solidified is peeled off from the figuration face of mould; And
Photosensitive polymer combination layer after peeling off is made to the operation of flexible printed board.
3. the manufacture method of flexible printed board according to claim 2, is characterized in that,
The photosensitive polymer combination layer after peeling off is made in the operation of flexible printed board, comprise that the face that figuration face using photosensitive polymer combination layer from mould has been peeled off that is the face contacting with figuration face are as the printing surface being roughened, and the operation of removing the rough surface of the printing surface beyond the region corresponding with printed patterns in the mode of machinery or heating.
4. the manufacture method of flexible printed board according to claim 2, is characterized in that,
The operation of preparing mould comprises:
Preparation comprises hard material and has the operation with respect to the supporting substrates of the penetrability of dynamic rays;
Make the face with figuration face opposition side of mould contact surface the fixing operation of supporting substrates.
5. according to the manufacture method of the flexible printed board described in any one in claim 2 to 4, it is characterized in that,
Use comprises prepolymer, have the monomer of at least a kind of ethene unsaturated group and the composition of Photoepolymerizationinitiater initiater as photosensitive polymer combination.
6. a manufacture method for substrate for liquid crystal panel, is characterized in that,
Right to use requires the flexible printed board shown in 1, forms the operation of the liquid crystal orientation film that liquid crystal panel uses by flexible printing.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013001988A JP2014133336A (en) | 2013-01-09 | 2013-01-09 | Flexographic printing plate and method for manufacturing the same, and method for manufacturing substrate for liquid crystal panel |
| JP2013-001988 | 2013-01-09 |
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| CN103909758A true CN103909758A (en) | 2014-07-09 |
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| CN201310409950.5A Pending CN103909758A (en) | 2013-01-09 | 2013-09-10 | Flexible printed circuit board and manufacturing method thereof and method for manufacturing substrate for liquid crystal panel |
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| Country | Link |
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| JP (1) | JP2014133336A (en) |
| KR (1) | KR20140090542A (en) |
| CN (1) | CN103909758A (en) |
| TW (1) | TW201427823A (en) |
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| CN104210228A (en) * | 2014-08-27 | 2014-12-17 | 上海交通大学 | Wear-resistant anilox roller as well as preparation method and application thereof |
| CN104406520A (en) * | 2014-11-26 | 2015-03-11 | 昆山国显光电有限公司 | Flexible part detecting device and method |
| CN106814542A (en) * | 2015-11-30 | 2017-06-09 | 乐凯华光印刷科技有限公司 | A kind of ablation film and its application |
| CN108472975A (en) * | 2016-01-04 | 2018-08-31 | 富士胶片株式会社 | The manufacturing method of flexographic printing version, flexographic printing plate originals, the manufacturing method of flexographic printing version and flexographic printing plate originals |
| CN110997258A (en) * | 2017-09-29 | 2020-04-10 | 东洋纺株式会社 | Release film for producing ceramic green sheet |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5727526B2 (en) * | 2013-01-09 | 2015-06-03 | 住友ゴム工業株式会社 | Flexographic printing plate and manufacturing method thereof, and manufacturing method of substrate for liquid crystal panel |
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Also Published As
| Publication number | Publication date |
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| KR20140090542A (en) | 2014-07-17 |
| TW201427823A (en) | 2014-07-16 |
| JP2014133336A (en) | 2014-07-24 |
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Application publication date: 20140709 |