JP2004042348A - Equipment and method for transfer printing and manufacturing method of indicating device using the equipment for transfer printing - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve the precision of straight lines and that of the thickness while preventing occurrence of bubbles when printing a frame shape of a seal material on a substrate. <P>SOLUTION: The equipment for transfer printing has an anilox roll 2 for applying and developing the seal material 7 on a surface and a printing plate 5 for transferring the seal material 7 from the anilox roll 2 onto the substrate 9. The anilox roll 2 has the first striped pattern grooves 14 in the surface, while the printing plate 5 has on the surface a projecting part 10 corresponding to a linear figure to be printed on the board 9. The projecting part 10 has second striped pattern grooves 15 in the top thereof. The first striped pattern grooves 14 and the second striped pattern grooves 15 are so disposed that they intersect each other on the occasion of transferring the seal material 7 onto the printing plate 5 from the anilox roll 2. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a transfer printing apparatus and a transfer printing method that can be used in a manufacturing process of a display device such as a liquid crystal display device. Further, the present invention relates to a method for manufacturing a display device using the transfer printing device.
[0002]
[Prior art]
In general, a liquid crystal display device is manufactured by bonding two substrates with a liquid crystal layer interposed therebetween. On the surfaces of the two substrates, an alignment film is previously formed in a portion corresponding to a screen region on the side facing the liquid crystal layer. Conventionally, as a method of forming an alignment film on a substrate surface, a flexographic printing method may be used. The alignment film material has a viscosity of about several cps to 200 cps, and the required thickness of the alignment film is several tens to several hundreds nm.
[0003]
The flexographic printing method will be described with reference to FIGS. As shown in FIG. 9, an anilox roll 2 and a plate cylinder 6 holding or forming a printing plate 105 on its surface are circumscribed to each other and are arranged so as to be rotatable. The anilox roll 2 and the doctor roll 3 are arranged so as to be circumscribed and rotatable with each other. The anilox roll 2 has a diamond pattern as shown in FIG. 10 over almost the entire outer peripheral surface. In this pattern, substantially diamond-shaped (substantially diamond-shaped) pattern recesses 16a are regularly arranged. As a pattern formed on the surface of the anilox roll 2, as another example, a honeycomb pattern as shown in FIG. 11 may be used. In this pattern, substantially hexagonal pattern recesses 16b are regularly arranged in a honeycomb shape. As still another example, an oblique stripe pattern (also referred to as a “helical pattern”) as shown in FIG. 12 may be used. In this pattern, groove-shaped pattern concave portions 16c are arranged in parallel.
[0004]
As shown in FIG. 9, an alignment film material 107 is dropped as a printing material on the surface of the anilox roll 2 by the dispenser 1. The dropped alignment film material 107 is evenly spread on the surface of the anilox roll 2 by the doctor roll 3, and is then transferred to the surface of the printing plate 105 by the rotational movement of the anilox roll 2 and the plate cylinder 6. On the surface of the printing plate 105, convex portions 110 corresponding to the pattern of the alignment film to be formed are formed. In particular, in the case of printing an alignment film, the upper surface of the convex portion 110 is not flat, and a number of fine dot concave portions 13 are arranged on the upper surface of the convex portion 110 as shown in FIG. The alignment film material 107 transferred from the anilox roll 2 to the surface of the printing plate 105 adheres to the upper surface of the projection 110. By the rotation of the plate cylinder 6, the printing plate 105 comes into contact with the substrate 9 placed on the stage 4, and transfers the alignment film material 107 to the substrate 9. Thus, a desired thin film pattern as an alignment film is formed on the surface of the substrate 9.
[0005]
On the other hand, as a method for forming a liquid crystal layer between two substrates, a thermosetting or UV (ultraviolet) curable sealing material is annularly applied to at least one surface of the two substrates, A method in which liquid crystal is dropped on a substrate, and two substrates are bonded together, or a sealing material is applied to at least one surface of the two substrates in a C-shape (substantially annular shape having a cut), and the two substrates are bonded. After the alignment, a method of injecting a liquid crystal from a break in the sealing material is adopted.
[0006]
The application of the sealing material is performed by a screen printing method, a dispenser method, the above-described flexographic printing method, or the like after the formation of the alignment film.
[0007]
In the screen printing method, since the screen mesh is in contact with the surface of the substrate, the alignment film already formed on the substrate surface may be damaged, and display quality may be impaired. As a countermeasure against this problem, Japanese Patent Application Laid-Open No. 9-258194 proposes a method in which the emulsion of the screen plate on the alignment film is thinned. Frequently, leakage occurs and printing is performed.
[0008]
In the dispensing method, as described in JP-A-5-15818, a seal material is drawn for each cell in a single-stroke manner using a dispensing nozzle, so that a large substrate on which many small cells are arranged is used. When drawing, it takes a lot of time.
[0009]
Conventionally, in the flexographic printing method, the film thickness that can be stably printed is up to about 10 μm. However, when performing flexographic printing for the purpose of printing a sealing material, a larger film thickness is required. It is conceivable to perform printing by enlarging the dot-like dot concave portions 13 and groove-like concave portions provided in the convex portions of the printing plate. In this case, as shown in FIG. 14, flexographic printing is performed using the sealing material 7 as a printing material and a printing plate 5 having a frame-shaped convex portion 10 corresponding to the shape on which the sealing material is to be arranged on the substrate surface. become.
[0010]
[Problems to be solved by the invention]
In the case of performing flexographic printing as described above, unlike the alignment film formed on the entire screen area, the area to be printed with the sealing material has a frame shape composed of thin lines, that is, a linear figure having linearity and thickness. However, the following problems occur because the accuracy is required.
[0011]
In FIG. 14, when the anilox roll 2 overlaps the printing plate 5, the area of the seal material to be printed has a small width, so that the positional relationship between the convex portion 10 and the pattern concave portion 16 is, for example, as shown in FIG. Become. In this example, the pattern concave portion 16 is in contact with the left and right ridge lines 17 of the convex portion 10 so as to straddle. As a result of the anilox roll 2 overlapping the printing plate 5, in the region where the projections 10 are present, the sealing material 7 inside the pattern recesses 16 is transferred so as to protrude thickly on the upper surface of the projections 10, so that the right and left ridge lines 17 are formed. As shown in FIG. 16, a portion 18 where the sealing material 7 is thick and a portion 19 where the sealing material 7 is thin are formed on the upper surface of the convex portion 10 sandwiched therebetween. Further, as the plate cylinder 6 rolls, the projections 10 press the sealing material 7 against the upper surface of the substrate 9. As a result, the sealing material 7 which has risen and adhered at the portion 18 is transferred so as to protrude from the ridge line of the convex portion 10 to the side, as shown in FIG. The image of the sealing material 12 formed on the upper surface of the substrate 9 is actually an image obtained by inverting the image on the convex portion 10 from side to side. However, in FIG. 17, the image is not inverted so as to be easily compared with FIG. it's shown. Originally, on the surface of the substrate 9, the outline of the sealing material 12 should be printed in a straight line reflecting the ridge line 17, but as shown in FIG. turn into.
[0012]
The linearity is slightly relaxed by changing the arrangement of the pattern concave portions 16 as shown in FIG. However, in any of FIG. 15 and FIG. 18, the degree of overlap between the ridge line of the convex portion 10 and the pattern concave portion 16 is greatly changed due to the variation in the relative positional relationship between the printing plate 5 and the anilox roll 2 in the rotation axis direction, and the protrusion is caused. Since the occurrence of the phenomenon may vary, neither the linear accuracy nor the thickness of the printed sealing material 12 is constant. In FIGS. 15 to 18, only a part of the pattern concave portions 16 is shown, but actually, the pattern concave portions 16 are further vertically arranged in the figure along the longitudinal direction of the convex portions 10. Are lined up.
[0013]
As one countermeasure against this problem, as shown in FIG. 19, a pattern on the surface of the anilox roll 2 may be a striped pattern. The striped grooves on the surface of the anilox roll 2 are hereinafter referred to as "first striped grooves" 114. By doing so, the protrusion phenomenon is alleviated to some extent. However, in practice, if the upper surface of the convex portion 10 is the dot concave portion 13 (see FIG. 13) as in the related art, the sealing material does not enter the dot concave portion 13 well during transfer, so that air is trapped. In some cases, unevenness in the thickness of the sealing material or bubbles may occur in the printing result.
[0014]
Therefore, a transfer printing apparatus, a transfer printing method, and a method of manufacturing a display device using the transfer printing apparatus, which can improve the linearity of a seal material obtained by printing and can perform printing without generating bubbles. The purpose is to provide.
[0015]
[Means for Solving the Problems]
In order to achieve the above object, a transfer printing apparatus according to the present invention includes a printing material developing member for applying and developing a printing material on a surface, and a printing material transferred from the printing material developing member onto a printing material. And a printing plate for transfer. The printing material developing member has a first striped groove on the surface. This printing plate has on its surface convex portions corresponding to the linear figures to be printed on the printing object. This projection has a second stripe-shaped groove on its upper surface. The printing material developing member and the printing plate are arranged such that the first striped groove and the second striped groove cross each other when the printing material is transferred from the printing material spreading member to the printing plate. Are located. By adopting this configuration, the interference between the stripes can be prevented due to the intersection of the first stripe groove and the second stripe groove, and high-precision printing excellent in linearity can be performed.
[0016]
Preferably, in the above invention, the printing plate includes a curved surface, and the convex portion is disposed on an outer surface of the curved surface. By adopting this configuration, printing on a printing substrate can be performed by rolling the printing plate, so that it can be used in a general flexographic printing press.
[0017]
In the above invention, preferably, the second stripe-shaped groove is disposed so as to intersect a tangent line when the printing plate is brought into contact with the printing material in order to transfer the printing material to the printing material. I have. By employing this configuration, it is possible to prevent a phenomenon in which the printing material drops in a ball shape and deteriorates the linearity.
[0018]
In order to achieve the above object, a transfer printing method according to the present invention is a transfer printing method for a linear figure, wherein a step of applying a printing material to a printing material developing member having a first striped groove on the surface, A pre-transfer step of transferring the printing material from a printing material developing member to a printing plate having a convex portion representing the linear figure, and transferring the printing material from the printing plate to a printing material by transferring the line to the printing material. And a main transfer step of printing a figure. A second striped groove is formed on the surface of the projection. In the preliminary transfer step, the printing material developing member and the printing plate are brought into contact with each other so that the first stripe-shaped grooves and the second stripe-shaped grooves intersect each other. By adopting this method, the interference between the stripes can be prevented by the intersection of the first stripe groove and the second stripe groove, and high-precision printing excellent in linearity can be performed.
[0019]
In the above invention, preferably, the printing plate includes a curved surface, and the printing action portion is formed on an outer surface of the curved surface. On the other hand, the main transfer step is performed by rolling the printing plate relative to the surface of the printing medium. By employing this method, the transfer from the printing plate to the printing substrate can be accurately performed.
[0020]
In the above invention, preferably, the second stripe-shaped groove is disposed so as to intersect a tangent line when the printing plate is brought into contact with the printing medium in the main transfer step. By adopting this method, printing can be performed smoothly while preventing a phenomenon that the printing material drops in a ball shape and deteriorates linearity.
[0021]
In order to achieve the above object, a method for manufacturing a display device according to the present invention includes a substrate printing step of printing the linear figure on a substrate using the above-described transfer printing device. By adopting this method, a linear figure can be accurately printed on the substrate of the display device, so that a display element portion such as a liquid crystal layer can have high reliability.
[0022]
Preferably, in the above invention, the printing material is a sealant for defining the outer periphery of the liquid crystal layer. By employing this method, the liquid crystal layer can have high accuracy and high reliability.
[0023]
In the above invention, preferably, the linear figure is a substantially annular figure. By employing this method, a main part of a display device such as a highly reliable liquid crystal layer can be formed using a printed linear figure.
[0024]
BEST MODE FOR CARRYING OUT THE INVENTION
Prior to the description of the embodiments of the present invention, first, a technique (hereinafter, referred to as “reference technique”) which is a reference to the present invention will be described with reference to FIG. In this reference technology, a stripe-shaped groove is formed diagonally on the upper surface of the convex portion 10 of the printing plate 5. The striped groove on the upper surface of the protrusion 10 is hereinafter referred to as a “second striped groove” 115. In this manner, the problem of bubbles as in the conventional dot recess 13 on the upper surface of the projection 10 can be avoided. In particular, by making the second striped groove 115 oblique to the direction of the side of the frame shape of the sealing material, it is not necessary to create a place where the length of the groove is extremely long in any part of the frame shape. Air can easily escape from the inside of the groove, and can be prevented from remaining as air bubbles during printing on the substrate 9.
[0025]
However, there was a new problem even when considering the application of this reference technology. That is, when the anilox roll 2 and the printing plate 5 overlap, as shown in FIG. 21, if the first striped groove 114 and the second striped groove 115 overlap in the same direction, the first striped groove 114 When the pitch is different from that of the second stripe-shaped groove 115, the stripes interfere with each other, and unevenness in the degree of overlap occurs in stripes. Such stripe-like unevenness results in a stripe-like portion where the sealing material is thickly attached on the upper surface of the projection 10 of the printing plate 5. Therefore, when the sealing material 7 is transferred from the printing plate 5 to the substrate 9, the above-described protrusion phenomenon occurs in a portion where the sealing material is thickly attached, and the contour of the sealing material 12, which should be printed linearly, has linearity. Will be lacking.
[0026]
Therefore, the present inventors have conducted intensive studies to solve such a problem and obtain a better transfer printing device, a better transfer printing method, and a method of manufacturing a display device using this transfer printing device. Invented the invention.
[0027]
(Embodiment 1)
(Transfer printing device)
With reference to FIG. 1, a transfer printing apparatus according to a first embodiment of the present invention will be described. This transfer printing apparatus is a flexographic printing machine. In this flexographic printing press, an anilox roll 2 as a printing material developing member and a plate cylinder 6 holding or forming a printing plate 5 on its surface are arranged so as to be circumscribed and rotatable. The positional relationship and role between the anilox roll 2 and the plate cylinder 6 are the same as those of the conventional flexographic printing press shown in FIG. The same applies to the positional relationship and role of the dispenser 1 and the doctor roll 3. However, the flexographic printing press according to the present embodiment differs from the conventional flexographic printing press shown in FIG. 19 in that striped grooves are formed obliquely on the upper surface of the convex portion 10 of the printing plate 5. In the flexographic printing press according to the present embodiment, the striped grooves provided on the outer peripheral surface of the anilox roll 2 are referred to as “first striped grooves” 14, and the striped grooves provided on the upper surface of the projections 10 of the printing plate 5 are referred to as “first striped grooves”. “Second striped groove” 15. As described above, the sealing material 7 is transferred from the anilox roll 2 to the printing plate 5 by rolling the anilox roll 2 and the printing plate 5 while circumscribing each other. At this time, as shown in FIG. Then, the striped grooves are fed toward the tangent between the anilox roll 2 and the printing plate 5 and overlap. As an example in which stripe grooves are provided not only on the outer peripheral surface of the anilox roll 2 but also on the upper surface of the convex portion 10 of the printing plate 5, a flexographic printing machine (see FIG. 21) based on the reference technology is applicable. In the flexographic printing press, unlike the flexographic printing press based on the reference technology in which a stripe groove is simply provided on the upper surface of the convex portion 10, the first stripe groove 14 and the second stripe groove 15 are formed by the anilox roll 2 And the printing plate 5 are arranged so as to intersect when they overlap with each other.
[0028]
(Action / Effect)
As shown in FIG. 3, the printing plate 5 having received the transfer of the sealing material 7 rolls while being in contact with the surface of the substrate 9 as a printing object at a tangent line 42, and transfers the sealing material. In this example, the plate cylinder 6 is rotated at the same position, and the transfer is performed by sending the stage 4 on which the substrate 9 is placed. In FIG. 3, only the main parts are shown, and the anilox roll 2, the doctor roll 3, and the like are not shown.
[0029]
In this way, a printed sealing material 12 is formed on the surface of the substrate 9. At this time, the direction in which the printing plate 5 contacts the substrate 9, that is, the direction in which the printing plate 5 advances toward the tangent line 42 is indicated by an arrow 41. Some examples of the relationship between the first striped groove 14, the second striped groove 15, and the arrow 41 are shown in FIGS. As shown in FIGS. 4 and 5, at the time of transfer from the anilox roll 2 to the printing plate 5, the first stripe groove 14 and the second stripe groove 15 intersect and overlap with each other. It is preferable that the groove 15 is not parallel and crosses obliquely. The intersection of the arrow 41 and the second striped groove 15 means that the second striped groove 15 and the tangent 42 intersect. In this case, the generation of bubbles is prevented by the presence of the stripe grooves, and the stripes as shown in FIG. 21 are formed because the first stripe grooves 14 and the second stripe grooves 15 intersect not in the same direction. Interference can be prevented, and high-precision printing excellent in linearity can be performed.
[0030]
Note that the first striped groove 14 and the second striped groove 15 may be orthogonal to each other. However, in that case, it is desirable that the second striped groove 15 intersects the tangent line 42. That is, as shown in FIG. 6, it is necessary that the arrow 41 and the second striped groove 15 cross each other diagonally. This is the case where the first stripe-shaped groove 14 and the second stripe-shaped groove 15 are orthogonal to each other, and as shown in FIG. 7, the arrow 41 and the second stripe-shaped groove 15 have a relationship of being orthogonal to each other. When the projections 10 of the printing plate 5 are separated from the substrate 9, the sealing material 7, which is a printing material, falls into a bead shape and falls outside the area to be printed on the substrate 9, deteriorating the linearity. It is because they do. On the other hand, as shown in FIG. 8, when the arrow 41 and the second striped groove 15 are parallel to each other, the problem of the ball-shaped sealing material 7 falling can be reduced. Since the length of the two-striped groove 15 becomes long, a problem of air bubbles occurs, which is not preferable. 7 and 8, it is assumed that the direction of the arrangement of the protrusions 10 is parallel to the arrow 41, which is not preferable. This is not the case if it is made oblique to this.
[0031]
(Embodiment 2)
(Transfer printing method)
With reference to FIG. 1, a transfer printing method according to a second embodiment of the present invention will be described. This transfer printing method is a flexographic printing method, and can be performed using the flexographic printing machine shown in FIG. That is, the sealing material 7 which is a printing material is dropped on the surface of the anilox roll 2 which is a printing material developing member and has the first striped groove 14 on the outer peripheral surface by the dispenser 1, and is spread by the doctor roll 3 to spread the anilox roll. First, a step of applying a sealing material 7 to the surface of 2 is performed. Further, the anilox roll 2 rotates, and a preliminary transfer step of transferring the sealing material 7 to the plate cylinder 6 holding the printing plate 5 on the surface is performed. A second striped groove 15 is provided on the upper surface of the projection 10 of the printing plate 5, and when the anilox roll 2 and the printing plate 5 overlap, the first striped groove 14 and the second striped groove 15 They are arranged to intersect. Further, the printing plate 5 moves with the rotation of the plate cylinder 6 with the sealing material 7 attached to the upper surface of the projection 10. In this way, a main transfer step of transferring the sealing material from the printing plate 5 to the substrate 9 as a printing object and printing a linear figure as shown in FIG. 3 is performed.
[0032]
(Action / Effect)
According to such a transfer printing method, while the generation of bubbles at the time of transfer is prevented by the stripe-shaped grooves, the first stripe-shaped grooves 14 and the second stripe-shaped grooves 15 are formed as shown in FIGS. Since they intersect, stripe-shaped unevenness due to interference between stripes does not occur, and a linear figure excellent in linearity can be printed. The relationship between the second striped groove 15 and the tangent line 42, that is, the relationship between the second striped groove 15 and the arrow 41 is the same as that described in the first embodiment.
[0033]
(Embodiment 3)
(Method of manufacturing display device)
A method for manufacturing a display device according to the third embodiment based on the present invention will be described. In the method of manufacturing the display device, the transfer printing device described in Embodiment 1 is used to print the sealing material 12 on the surface of the transparent substrate 9 of the liquid crystal display device as shown in FIG. Including a printing step. In the substrate 9 on which the sealing material 12 is printed as described above, liquid crystal is dropped inside the frame shape of the sealing material 12, the other substrate is covered from above, the sealing material is cured, the liquid crystal is sealed, and a liquid crystal cell is obtained. be able to.
[0034]
(Action / Effect)
When a seal material is printed by this transfer printing apparatus, highly linear printing can be performed while preventing air bubbles from being mixed into the seal material 12, so that bubbles in the seal material may burst in a later process. Thus, it is possible to stably and surely manufacture a display device in which liquid crystal is sealed without leaking the liquid crystal that should have been sealed.
[0035]
Note that the print pattern of the sealing material is not limited to a simple rectangular frame shape, and may be another shape. However, it is preferably substantially annular in consideration of sealing the liquid crystal inside.
[0036]
The display device is not limited to the liquid crystal display device, but may be another type of display device. For example, an organic EL (Electro Luminescence) display table may be used. In this case, printing is performed on the organic EL substrate by the transfer printing apparatus according to the present invention.
[0037]
In each of the above embodiments, a flexographic printing machine has been described as an example of a transfer printing apparatus, and a flexographic printing method has been described as an example of a transfer printing method. However, the present invention is not limited to flexographic printing, but may be other letterpress printing. May be. For example, a stamp printing method of a letterpress direct printing method may be used. That is, the application of the present invention is not limited to the case where the printing plate is attached to the outer peripheral surface of the cylindrical plate cylinder, and can be applied even if the printing plate is a flat plate. In this case, the stripe grooves provided on the projections provided on the plate-shaped printing plate and the stripe grooves provided on the printing material developing member intersect when overlapping for transfer. If it is, the same effect can be obtained.
[0038]
In each of the above embodiments, the printing material has been described as a sealing material. However, the printing material is not limited to the sealing material, and may be other general inks or adhesives. In addition, the present invention can provide the effect of being able to print with high linear accuracy according to the present invention, even when the print target is a general plate or sheet other than the substrate of the display device. In each of the above-described embodiments, an example in which only one frame shape is printed on the surface of one substrate as a printing object has been described. However, a case where a plurality of frame shapes are printed on the surface of one substrate is described. Also, the present invention can be applied. In each of the above-described embodiments, the figure to be printed has been described by taking the example of the frame shape as an example of the linear figure. However, even if the figure is other than the linear figure, the printing accuracy is improved by applying the present invention. Can be done. However, in the case of a linear figure in particular, the effect of preventing air bubbles from being mixed by the stripe-shaped grooves can be effectively exhibited, which is preferable. In the case of a linear figure, the accuracy of the thickness of a printed line is often considered to be a problem, and the present invention greatly contributes.
[0039]
Note that the above-described embodiment disclosed this time is illustrative in all aspects and is not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and includes all modifications within the scope and meaning equivalent to the terms of the claims.
[0040]
【The invention's effect】
According to the present invention, when the printing material is transferred from the printing material developing member to the printing plate, the interference between the stripes can be prevented by intersecting the first stripe groove and the second stripe groove. Since non-uniformity can be prevented from occurring in the manner of attachment, high-precision printing excellent in linearity can be performed when printing on a printing substrate.
[Brief description of the drawings]
FIG. 1 is a conceptual diagram of a transfer printing apparatus according to a first embodiment of the present invention.
FIG. 2 is a partially enlarged view showing a state in which striped grooves are fed toward a tangent line in the transfer printing apparatus according to the first embodiment of the present invention.
FIG. 3 is an explanatory diagram illustrating a state in which transfer is performed from a printing plate of a transfer printing apparatus to a printing medium according to the first embodiment of the present invention.
FIG. 4 is an explanatory diagram of a first example of the degree of overlap between the first striped groove and the second striped groove in the transfer printing apparatus according to the first embodiment of the present invention.
FIG. 5 is an explanatory diagram of a second example of the degree of overlap between the first striped groove and the second striped groove in the transfer printing apparatus according to the first embodiment of the present invention.
FIG. 6 is an explanatory diagram of a third example of the degree of overlap between the first striped groove and the second striped groove in the transfer printing apparatus according to the first embodiment of the present invention.
FIG. 7 is an explanatory diagram of a fourth example of how the first and second striped grooves overlap in the transfer printing apparatus according to the first embodiment of the present invention.
FIG. 8 is an explanatory diagram of a fifth example of the degree of overlap between the first striped groove and the second striped groove in the transfer printing apparatus according to the first embodiment of the present invention.
FIG. 9 is a conceptual diagram in a case where an alignment film is printed by a transfer printing apparatus based on a conventional technique.
FIG. 10 is a partially enlarged view of a first example of a pattern on the outer peripheral surface of the anilox roll of the transfer printing apparatus based on the prior art.
FIG. 11 is a partially enlarged view of a second example of the pattern on the outer peripheral surface of the anilox roll of the transfer printing apparatus based on the prior art.
FIG. 12 is a partially enlarged view of a third example of the pattern on the outer peripheral surface of the anilox roll of the transfer printing apparatus based on the prior art.
FIG. 13 is a partially enlarged view of a surface of a printing plate of a transfer printing apparatus based on the prior art.
FIG. 14 is a conceptual diagram of a first example in a case where a seal material is printed by a transfer printing apparatus based on a conventional technique.
FIG. 15 is an explanatory diagram of a first example showing how a convex portion and a pattern concave portion of a printing plate overlap when printing a sealing material with a transfer printing apparatus based on the prior art.
FIG. 16 is an explanatory diagram showing a state of a convex portion of a printing plate when a seal material is to be printed by a transfer printing apparatus based on a conventional technique.
FIG. 17 is an explanatory diagram showing a state of a surface of a printing material when a seal material is to be printed by a transfer printing apparatus based on a conventional technique.
FIG. 18 is an explanatory diagram of a second example showing the degree of overlap between a convex portion and a pattern concave portion of a printing plate when a seal material is to be printed by a transfer printing apparatus based on a conventional technique.
FIG. 19 is a conceptual diagram of a second example in a case where a seal material is printed by a transfer printing apparatus based on a conventional technique.
FIG. 20 is a conceptual diagram of a transfer printing apparatus based on a reference technology.
FIG. 21 is an explanatory diagram of a problem in the transfer printing apparatus based on the reference technology.
[Explanation of symbols]
Reference Signs List 1 dispenser, 2 anilox roll, 3 doctor roll, 4 stage, 5,105 printing plate, 6 plate cylinder, 7 sealant, 9 substrate, 107 alignment film material, 10,110 convex portion, 12 (printed) sealant , 13 (dots on the surface of the printing plate), 14, 114 1st stripe groove, 15, 115 2nd stripe groove, 16, 16a, 16b, 16c Pattern depression (on the anilox roll surface), 17 ridgeline, 18 (The seal material was thickened), 19 (the seal material was thinned), 41 (the direction in which the printing plate contacts the substrate), and 42 tangents.

Claims (9)

A printing material deploying member for applying and developing the printing material on the surface,
A printing plate for transferring the printing material transferred from the printing material developing member to a printing medium,
The printing material developing member has a first striped groove on the surface thereof,
The printing plate has, on its surface, a convex portion corresponding to a linear figure to be printed on the printing medium,
The protrusion has a second stripe-shaped groove on its upper surface,
The printing material developing member and the printing plate are arranged such that the first striped groove and the second striped groove cross each other when transferring the printing material from the printing material developing member to the printing plate. The transfer printing device that is located. The transfer printing apparatus according to claim 1, wherein the printing plate includes a curved surface, and the convex portion is disposed on an outer surface of the curved surface. The second striped groove is arranged so as to intersect a tangent line when the printing plate is brought into contact with the printing material in order to transfer the printing material to the printing material. The transfer printing apparatus as described in the above. A transfer printing method for a linear figure,
Applying a printing material to a printing material developing member having a first striped groove on the surface;
A preliminary transfer step of transferring the printing material from the printing material developing member to a printing plate having a convex portion representing the linear figure,
Main transfer step of printing the linear figure on the printing medium by transferring the printing material from the printing plate to the printing medium,
A second striped groove is formed on the surface of the projection,
The transfer printing method, wherein in the preliminary transfer step, the printing material developing member and the printing plate are brought into contact with each other such that the first stripe-shaped grooves and the second stripe-shaped grooves intersect each other. The printing plate includes a curved surface, the printing action portion is formed on an outer surface of the curved surface, and the main transfer step is performed by rolling the printing plate relatively to a surface of the printing medium. The transfer printing method according to claim 4. The transfer printing method according to claim 5, wherein the second stripe-shaped groove is arranged so as to intersect a tangent when the printing plate is brought into contact with the printing medium in the main transfer step. A method for manufacturing a display device, comprising a substrate printing step of printing the linear figure on a substrate using the transfer printing device according to claim 1. The method according to claim 7, wherein the printing material is a sealing material for defining an outer periphery of the liquid crystal layer. The method for manufacturing a display device according to claim 8, wherein the linear figure is a substantially annular figure.

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