CN111221186A - Alignment film printing plate and manufacturing method thereof - Google Patents
Alignment film printing plate and manufacturing method thereof Download PDFInfo
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- CN111221186A CN111221186A CN202010192820.0A CN202010192820A CN111221186A CN 111221186 A CN111221186 A CN 111221186A CN 202010192820 A CN202010192820 A CN 202010192820A CN 111221186 A CN111221186 A CN 111221186A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 18
- 229920005989 resin Polymers 0.000 claims description 29
- 239000011347 resin Substances 0.000 claims description 29
- 238000010147 laser engraving Methods 0.000 claims description 26
- 238000012545 processing Methods 0.000 claims description 13
- 238000004140 cleaning Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 10
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical group O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 8
- 238000004049 embossing Methods 0.000 claims description 5
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 4
- 239000001569 carbon dioxide Substances 0.000 claims description 4
- 239000002904 solvent Substances 0.000 claims description 4
- 150000001720 carbohydrates Chemical class 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 3
- 239000003208 petroleum Substances 0.000 claims description 3
- 238000005488 sandblasting Methods 0.000 claims description 3
- 230000032683 aging Effects 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims description 2
- 239000007788 liquid Substances 0.000 abstract description 17
- 239000000758 substrate Substances 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 7
- 239000011521 glass Substances 0.000 abstract description 7
- 239000011148 porous material Substances 0.000 description 12
- 238000004080 punching Methods 0.000 description 12
- 238000002474 experimental method Methods 0.000 description 9
- 239000004973 liquid crystal related substance Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 239000005977 Ethylene Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- QNRMTGGDHLBXQZ-UHFFFAOYSA-N buta-1,2-diene Chemical group CC=C=C QNRMTGGDHLBXQZ-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000011342 resin composition Substances 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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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
- G02F1/13378—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by treatment of the surface, e.g. embossing, rubbing or light irradiation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
- B41C1/00—Forme preparation
- B41C1/02—Engraving; Heads therefor
-
- 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
- B41N1/24—Stencils; Stencil materials; Carriers therefor
-
- 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
- B41N3/00—Preparing for use and conserving printing surfaces
- B41N3/06—Preparing for use and conserving printing surfaces by use of detergents
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Printing Plates And Materials Therefor (AREA)
Abstract
The invention discloses an alignment film printing plate and a manufacturing method thereof, wherein holes are arranged on a rough surface of the alignment film printing plate by utilizing laser to form straight-line or staggered hole positions which are regularly arranged, the hole diameter is 20-40 mu m, the hole interval is 40-60 mu m, the hole depth is 10-40 mu m, alignment liquid in the hole positions, in valleys on the rough surface and on the peak surface generates different gradient surface tension effects, and the film thickness uniformity finally transferred on a glass substrate are greatly improved, wherein the film thickness uniformity is excellent when the hole diameter of a concave hole is 20 mu m, the hole interval is 40 mu m, the hole depth is 10-12 mu m, and the equidistant arrangement mode is straight-line.
Description
Technical Field
The invention relates to the technical field of automatic control. More particularly, the present invention relates to an alignment film printing plate and a method for manufacturing the same.
Background
In the manufacturing process of the liquid crystal display device, an orientation material, specifically, a color film substrate and an array substrate in the display device, needs to be coated on a glass substrate, and an alignment film is formed on the surface of the glass substrate, so that liquid crystal molecules can be arranged according to a rule, the inclination angle of the liquid crystal molecules can be conveniently adjusted through the device, and the expected display effect is achieved. In order to form a precise and stable liquid crystal orientation film surface on an electrode of a liquid crystal display element substrate, a flexible printing resin plate printing method is invented, an orientation material on the surface is transferred to a glass substrate by utilizing an orientation film printing plate, the existing flexible orientation film printing resin plate is divided into a resin layer and a fixed substrate layer, the fixed substrate mainly adopts thermoplastic resin with good light transmittance and strong tensile resistance, such as PE, PP, TPU, PET and the like, the resin layer mainly comprises photosensitive resin composition, comprises 1, 2-butadiene structure and prepolymer with ethylene double bonds at the tail ends, the main performance of the prepolymer is that the prepolymer is subjected to crosslinking reaction and curing molding under active rays (ultraviolet rays and the like), and the surface of the resin layer with a specific rough surface is made to be a printing surface through a specific embossing roller. The prior fixed base plate is generally divided into two types, namely a rough surface fixed base plate and a dot relief printing plate, and the average thickness of the film thickness of the dot relief printing plate in the prior art world is about equal to that of the film thickness of the dot relief printing plate
C and V coefficients are between 0.7 and 1.2 percent, and the dot relief printing plate is easy to accumulate liquid at the printing edge due to the stretching deformation of meshes, so the applicant proposes that the rough surface fixing base plate solves the problem of marginal effect of the dot relief printing plate, but the prior rough surface fixing base plate has the following problems: compared with the dot relief printing plate, the ink content of the rough-surface alignment film printing plate is still limited, and the requirement of a product with high printing ink thickness cannot be met; because of the limitations of high cost, high difficulty and the like of manufacturing the embossing wheel, the existing rough surface alignment film printing plate cannot carry out range regulation and control on the ink content and cannot manufactureThe product structure is flexibly adjusted; since the printed surface is an irregular rough surface, the uniformity of the film thickness cannot be ensured for products with high film thickness and high quality.
Disclosure of Invention
An object of the present invention is to solve at least the above problems and to provide at least the advantages described later.
The invention also aims to provide an alignment film printing plate and a manufacturing method thereof, wherein the rough surface is combined with the regular hole positions, so that the film thickness and the uniformity of the film thickness are obviously improved, and the requirement of high-quality printing is met.
To achieve these objects and other advantages, the present invention provides an alignment film printing plate having a uniform rough surface on a surface thereof, the rough surface having an average roughness RA of 1 to 3 μm, the rough surface being provided with recesses arranged at equal intervals downward, the recesses having an aperture of 20 μm to 40 μm, a pitch of the recesses of 40 μm to 60 μm, and a depth of the recesses of 10 μm to 40 μm, the equal intervals being in a straight line or staggered line.
The invention also provides a manufacturing method of the alignment film printing plate, which comprises the following steps:
s1, preparing a flexible photosensitive resin plate with a surface which is solidified and uniformly roughened, wherein the average roughness RA is within 1-3 mu m, and the surface of the flexible photosensitive resin plate is not provided with any panel or dummy arrangement;
s2, carrying out laser engraving treatment on the rough surface of the flexible photosensitive resin plate to engrave concave holes which are arranged at equal intervals, wherein the aperture of each concave hole is 20-40 μm, the hole pitch is 40-60 μm, the depth of each hole is 10-40 μm, and the equal intervals are arranged in a straight line or staggered line;
s3, cleaning the flexible photosensitive resin plate after the laser engraving treatment;
and S4, drying and aging the cleaned flexible photosensitive resin plate to obtain the alignment film printing plate.
Preferably, the flexible photosensitive resin plate is roughened by embossing, sandblasting or grinding.
Preferably, the laser engraving uses a cylinder straight beam type or a horizontal galvanometer scanning type laser engraving machine to engrave the flexible photosensitive resin plate.
Preferably, the cylinder size of the cylinder straight beam type laser engraving machine is phi 1250 × L3180mm, at least 2 laser heads are configured for simultaneous processing, the total output power is 400W, the laser is a carbon dioxide laser, the light spot is a circular light spot and has a diameter of 20 μm, and the screw pitch of the laser engraving machine is 20 μm.
Preferably, the processing depth of the cylinder straight beam type laser engraving machine is 20 μm, the processing rotating speed is 500cm/s, the processing error is +/-2 μm, and the light output power of the laser is 160W.
Preferably, the cleaning solvent selected for cleaning is a low-naphthalene petroleum carbohydrate.
Preferably, the concave holes have a diameter of 20 μm, a pitch of 40 μm, a depth of 10 μm to 12 μm, and are arranged in a straight line at equal intervals.
The invention at least comprises the following beneficial effects: the alignment film printing plate and the manufacturing method thereof of the invention use laser to arrange and punch on the rough surface of the alignment film printing plate to form straight-line or staggered hole sites with regular arrangement, the aperture of the hole sites is 20-40 μm, the hole pitch is 40-60 μm, the depth of the hole sites is 10-40 μm, the alignment liquid in the hole sites, in the valley and on the rough surface and on the peak surface generates different gradient surface tension effects, thus greatly improving the film thickness and the uniformity of the film thickness finally transferred on the glass substrate, wherein when the aperture of the concave hole is 20 μm, the hole pitch is 40 μm, the depth of the hole is 10-12 μm, and the equidistant arrangement mode is straight-line, the uniformity of the film thickness is excellent.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a film surface image of experiment group 1 taken by a 3D microscope;
fig. 2 is a film surface image of experimental group 2 taken by a 3D microscope;
fig. 3 is a film surface image of experimental group 3 taken by a 3D microscope;
fig. 4 is a film surface image of the experimental group 4 photographed by a 3D microscope;
fig. 5 is a film surface image of the experimental group 5 taken by a 3D microscope;
fig. 6 is a film surface image of the experimental group 6 taken by a 3D microscope;
FIG. 7 is a film surface image of the experimental group 1' photographed by a 3D microscope;
fig. 8 is a film surface image of the experimental group 2' photographed by a 3D microscope.
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.
It is to be noted that the experimental methods described in the following embodiments are all conventional methods unless otherwise specified, and the reagents and materials, if not otherwise specified, are commercially available; in the description of the present invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
The invention provides an alignment film printing plate, wherein the surface of the alignment film printing plate is provided with a uniform rough surface, the average roughness RA of the rough surface is 1-3 mu m, concave holes which are arranged at equal intervals are arranged downwards on the rough surface, the aperture of each concave hole is 20-40 mu m, the hole interval is 40-60 mu m, the depth of each concave hole is 10-40 mu m, and the equal interval arrangement mode is straight line or staggered.
The invention also provides a manufacturing method of the alignment film printing plate, which comprises the following specific steps of firstly preparing a flexible photosensitive resin plate with a surface which is solidified and uniformly roughened, wherein the average roughness RA is within 1-3 mu m, the surface of the flexible photosensitive resin plate is not provided with any panel or dummy arrangement, namely, no punching and printing work is carried out, the excessive roughness is not beneficial to punching, the printing precision of the alignment film is also influenced, and the transfer deviation is easily generated when the too low roughness is too high; and then carrying out laser engraving treatment on the rough surface of the flexible photosensitive resin plate to engrave concave holes which are arranged at equal intervals, wherein the aperture of each concave hole is 20-40 mu m, the depth of each hole is 10-40 mu m, the distance between the edges of the holes is 40-60 mu m, the equal distance arrangement mode is straight line or staggered, after engraving is finished, the flexible photosensitive resin plate after laser engraving treatment is cleaned to remove residual organic and inorganic impurities on the surface, and after cleaning, the flexible photosensitive resin plate is dried and aged, so that the hardness of the flexible photosensitive resin plate is ensured, the printing resistance is improved, and the alignment film printing plate is obtained.
Setting different apertures and depths to perform laser engraving and punching, wherein the punching area is fully distributed with 2 x 2m2The test results of the following tables 1 and 2 were obtained, in which the distance between the holes of experiment set No. 1 was the distance between adjacent "hills" in the microstructure of the rough surface, and the depth of the holes was the end difference between the hills and valleys, and the test results of the following tables 1 and 2 were obtained, and the test results of the following tables 2 were obtained. And (2) carrying out straight-line punching on the smooth surface of the non-roughened resin plate with the same area, wherein the aperture is 20 microns, the hole pitch is 40 microns, the depth of the holes is 10-12 microns, the average value of the measured film thickness is 956.00 microns, the marginal phenomena of ink accumulation in different degrees occur, the transfer quality is seriously influenced, even the film thickness data is lower than that of the dot relief printing plate, and the significance of the punching is not compared with that of the punching on the rough surface.
Table 1 test results of the hole site arrangement type in straight row
TABLE 2 test results of hole site arrangement type of staggered rows
According to the analysis of the data and the images in the above, in the manufacturing process of the alignment film printing plate, holes are arranged and punched on the rough surface of the alignment film printing plate by using laser to form straight-line or staggered hole sites which are regularly arranged, and when the alignment liquid is transferred to the surface of the glass substrate, the alignment liquid in the holes is positioned above the alignment liquid on the surface of the original rough surface, and under the tension action of the alignment liquid, the alignment liquid is finally tiled on the glass substrate to form a film with more uniform thickness, and the film thickness is obviously increased compared with the rough surface without the holes. In the prior art, a raised dot structure is arranged on a dot relief printing plate, but the marginal phenomenon of ink accumulation, namely alignment liquid is easy to remain at the edge of the dot structure, the dot structure is different from a punching structure in that the alignment liquid in holes is not directly communicated, and the alignment liquid between the structures similar to the holes formed between the salient points of the dot structure is communicated, so that the result of directly punching on a smooth surface is similar, the uniformity of the film thickness is seriously influenced, and the thickness lifting amount of the film thickness is extremely low. The boundary phenomenon is eliminated after hole sites with the aperture of 20-40 mu m, the hole edge interval of 40-60 mu m and the hole depth of 10-40 mu m are regularly arranged are added on the rough surface of the alignment film printing plate, the surface tension synergistic effect of peaks and valleys which are uniformly spaced on the rough surface and the alignment liquid in the hole sites is realized, for example, the alignment liquid is arranged in one hole site of the rough surface, the alignment liquid is arranged in all the valleys adjacent to the hole site, the depths of the valleys and the hole sites are different, the surface tension effect with different gradients is generated by matching the peaks around the hole sites, the overall liquid carrying capacity of the alignment film printing plate is improved, the film thickness is improved, the uniformity is better as the variation coefficient of C.V is smaller, and the C.V coefficients of experiment groups No. 2, No. 4, No. 5 and No. 1' are obviously better than those of experiment group 1 without laser engraving and experiment group 3 and the experiment group outside the limited range of the technical scheme, The uniformity of the film thickness of the experimental group 6 and the experimental group 2' is obviously improved by C.V coefficients, the average film thickness is improved by more than 10% of the original rough surface of the experimental group 1, and the hole position is on the alignment filmThe printing plate adopts the mode of straight line or staggered arrangement to obviously increase the thickness and the uniformity of the ink, and the synergistic effect of the aperture, the hole spacing and the hole depth also influences the improvement of the liquid carrying capacity. Generally, the depth of the pores varies with the pore size, and the larger the pore size, the larger the pore depth, the shallower the pore size is equivalent to no ink-containing effect, while too high the pore depth out of the range causes uneven ink discharge and clogging of the pores, seriously affecting uniformity, but does not contribute to increase in film thickness, and the larger the pore size, the slightly larger the film thickness, but the lower the film thickness uniformity, and the larger the pore size, the lower the film thickness. In experiment group 2 having a pore diameter of 20 μm, a pitch of pore edges of 40 μm, and a depth of pores of 10 to 12 μm, the C.V coefficient reached 0.09, the uniformity of the thickness of the ink was very good, far superior to that of the other experiment groups, and the average film thickness was
Compared with the rough surface experimental group 1 without holes, the film thickness is improved by 12 percent, which is obviously superior to the requirement of high printing ink thickness products in the industry. The size and the interval of the hole sites can be flexibly adjusted through the laser engraved drawing, and the ink content of the alignment film printing plate can be freely regulated and controlled.
In another technical scheme, the laser engraving adopts a roller straight beam type or a lying galvanometer scanning type laser engraving machine to engrave the flexible photosensitive resin plate. The flexible photopolymer plate can be roughened in batches by embossing, sandblasting or grinding in mechanical processing.
In another technical scheme, the laser engraving adopts a roller straight beam type or a horizontal galvanometer scanning type laser engraving machine to engrave the flexible photosensitive resin plate, so that the punching quality is higher.
In another technical scheme, the cylinder size of the cylinder straight beam type laser engraving machine is phi 1250 × L3180mm, at least 2 laser heads are configured for simultaneous processing, the total output power is 400W, the laser is a carbon dioxide laser, a light spot is a circular light spot and has a diameter of 20 μm, and the screw pitch of the laser engraving machine is 20 μm. The punching efficiency of the equipment is higher, and the damage of the carbon dioxide laser to the rough surface of the flexible photosensitive resin plate is small.
In another technical scheme, the processing depth of the roller straight beam type laser engraving machine is 20 microns, the processing rotating speed is 500cm/s, the processing error is +/-2 microns, and the light emitting power of laser is 160W. The laser engraving parameters are selected, the machining efficiency and the machining precision are high, the appearance of the hole is influenced by the laser parameters, and the better punching effect can be obtained in the range by adjusting the parameters.
In another technical scheme, the cleaning solvent selected in the cleaning process is low-naphthalene petroleum carbohydrate. The cleaning solvent is non-toxic and has less waste liquid.
In another technical scheme, the aperture of the concave hole is 20 μm, the hole pitch is 40 μm, the depth of the hole is 10 μm-12 μm, and the equidistant arrangement mode is a straight line. The C.V coefficient for this parameter was chosen to be 0.09, the ink thickness uniformity was very good, far better than other perforation data, and the average film thickness was
Is obviously superior to the requirement of high printing ink thickness products in the industry.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (8)
1. The alignment film printing plate is characterized in that the surface of the alignment film printing plate is provided with a uniform rough surface, the average roughness RA of the rough surface is 1-3 mu m, concave holes which are arranged equidistantly are arranged downwards, the aperture of each concave hole is 20-40 mu m, the hole pitch is 40-60 mu m, the depth of each hole is 10-40 mu m, and the equidistant arrangement mode is straight line or staggered.
2. The method for manufacturing an alignment film printing plate according to claim 1, comprising the steps of:
s1, preparing a flexible photosensitive resin plate with a surface which is solidified and uniformly roughened, wherein the average roughness RA is within 1-3 mu m, and the surface of the flexible photosensitive resin plate is not provided with any panel or dummy arrangement;
s2, carrying out laser engraving treatment on the rough surface of the flexible photosensitive resin plate to engrave concave holes which are arranged at equal intervals, wherein the aperture of each concave hole is 20-40 μm, the hole pitch is 40-60 μm, the depth of each hole is 10-40 μm, and the equal intervals are arranged in a straight line or staggered line;
s3, cleaning the flexible photosensitive resin plate after the laser engraving treatment;
and S4, drying and aging the cleaned flexible photosensitive resin plate to obtain the alignment film printing plate.
3. The method for manufacturing an alignment film printing plate according to claim 2, wherein the flexible photosensitive resin plate is roughened by embossing, sandblasting or grinding.
4. The method for manufacturing an alignment film printing plate according to claim 2, wherein the laser engraving uses a laser engraving machine of a cylinder straight beam type or a lying galvanometer scanning type to engrave the flexible photosensitive resin plate.
5. The method for manufacturing an alignment film printing plate according to claim 4, wherein the cylinder size of the cylinder straight beam type laser engraving machine is phi 1250 x L3180mm, at least 2 laser heads are arranged for simultaneous processing, the total output power is 400W, the laser is a carbon dioxide laser, the light spot is a circular light spot and has a diameter of 20 μm, and the screw pitch of the laser engraving machine is 20 μm.
6. The method for manufacturing an alignment film printing plate according to claim 4, wherein the processing depth of the roller-beam laser engraving machine is 20 μm, the processing rotation speed is 500cm/s, the processing error is ± 2 μm, and the light output power of the laser is 160W.
7. The method for manufacturing an alignment film printing plate according to claim 2, wherein a cleaning solvent selected in cleaning is a low-naphthalene petroleum carbohydrate.
8. The method for manufacturing an alignment film printing plate according to claim 2, wherein the concave holes have an aperture of 20 μm, a hole pitch of 40 μm, a hole depth of 10 μm to 12 μm, and are arranged in a straight line at equal intervals.
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| US20180354287A1 (en) * | 2017-01-23 | 2018-12-13 | Wuhan China Star Optoelectronics Technology Co., Ltd. | Alignment film printing plate and manufacturing method thereof |
| CN107561788A (en) * | 2017-09-30 | 2018-01-09 | 深圳市华星光电技术有限公司 | A kind of phase matching film galley and preparation method thereof and phase matching film printing equipment |
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| CN209858907U (en) * | 2019-06-21 | 2019-12-27 | 武汉瑞普赛精密技术有限公司 | Alignment film ladder printing plate |
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