JP3865063B2 - TRANSFER PRINTING DEVICE, TRANSFER PRINTING METHOD, AND DISPLAY DEVICE MANUFACTURING METHOD USING THE TRANSFER PRINTING DEVICE - Google Patents

Description

[0001]
BACKGROUND 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. Furthermore, the present invention relates to a method for manufacturing a display device using the transfer printing apparatus.
[0002]
[Prior art]
Generally, a liquid crystal display device is manufactured by bonding two substrates together with a liquid crystal layer sandwiched therebetween. On the surfaces of the two substrates, an alignment film is formed in advance in a portion corresponding to the screen region facing the liquid crystal layer. Conventionally, a flexographic printing method is sometimes used as a method for forming an alignment film on a substrate surface. 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, the anilox roll 2 and the plate cylinder 6 holding or forming the printing plate 105 on the surface are arranged so as to be circumscribed and rotatable. The anilox roll 2 and the doctor roll 3 are disposed so as to circumscribe each other and be rotatable. The anilox roll 2 has a diamond pattern as shown in FIG. 10 on almost the entire outer peripheral surface. In this pattern, substantially diamond-shaped (substantially diamond-shaped) pattern concave portions 16a are regularly arranged. As another example of the pattern formed on the surface of the anilox roll 2, a honeycomb pattern as shown in FIG. 11 may be used. In this pattern, the substantially hexagonal pattern concave portions 16b are regularly arranged in a honeycomb shape. As yet another example, an oblique stripe pattern (also referred to as “helical pattern”) as shown in FIG. 12 may be used. In this pattern, groove-shaped pattern recesses 16c are arranged in parallel.
[0004]
As shown in FIG. 9, the 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 uniformly spread on the surface of the anilox roll 2 by the doctor roll 3 and then transferred to the surface of the printing plate 105 by the rotational movement of the anilox roll 2 and the plate cylinder 6. Convex portions 110 corresponding to the pattern of the alignment film to be formed are formed on the surface of the printing plate 105. Particularly in the case of printing an alignment film, the upper surface of the convex portion 110 is not flat, and a large 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 convex portion 110. Due to 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 of forming a liquid crystal layer between two substrates, a thermosetting or UV (ultraviolet) curable sealant is applied annularly on at least one surface of the two substrates, and the inside A method in which the two substrates are bonded together after the liquid crystal is dropped onto the substrate, or a sealing material is applied in a C shape (substantially annular shape with a cut) on at least one surface of the two substrates, and the two substrates are pasted. A method of injecting liquid crystal from the cut line of the sealing material after matching is adopted.
[0006]
The sealing material is applied after the formation of the alignment film by a screen printing method, a dispenser method, the flexographic printing method described above, or the like.
[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 scratched and display quality may be impaired. As a countermeasure against this problem, Japanese Patent Application Laid-Open No. 9-258194 proposes a method of thinning the emulsion of the screen plate on the alignment film. Often, leaking prints occur.
[0008]
As disclosed in Japanese Patent Application Laid-Open No. 5-15818, the dispensing method draws a sealing material for each cell in the manner of one-stroke writing using a dispensing nozzle, so that a large substrate on which a large number of small cells are arranged. When drawing, it takes a lot of time.
[0009]
In the flexographic printing method, the film thickness that can be stably printed has been up to about 10 μm. However, when flexographic printing is performed 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 the groove-like dents provided on the convex portions of the printing plate. In this case, as shown in FIG. 14, flexographic printing is performed using a printing plate 5 having a frame-shaped convex portion 10 corresponding to the shape on which the sealing material is to be disposed on the substrate surface, using the sealing material 7 as a printing material. become.
[0010]
[Problems to be solved by the invention]
When flexographic printing is performed as described above, unlike the alignment film formed on the entire screen area, the area to be printed with the sealing material is a frame shape consisting of thin lines, i.e., a linear figure, which is linear or thick. Therefore, the following problems occur.
[0011]
In FIG. 14, when the anilox roll 2 is overlapped with the printing plate 5, the area to be printed with the sealing material is narrow, so 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. As a result of the anilox roll 2 being overlapped with the printing plate 5, the seal material 7 inside the pattern concave portion 16 is transferred so as to rise thickly on the upper surface of the convex portion 10 in the region where the convex portion 10 is present. 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 between the two. Further, as the plate cylinder 6 rolls, the convex portion 10 presses the sealing material 7 against the upper surface of the substrate 9. As a result, the sealing material 7 swelled and adhering at the portion 18 is transferred so as to protrude laterally from the ridge line of the convex portion 10, and becomes 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 reversing the left and right sides of the convex portion 10, but in FIG. 17, the image is not reversed left and right so that it can 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 the protrusion phenomenon occurs as shown in FIG. turn into.
[0012]
About linearity, if the arrangement | sequence of the pattern recessed part 16 is changed and it is made like FIG. 18, it will be relieved a little. However, in both FIG. 15 and FIG. 18, the 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. Since whether or not the phenomenon occurs can be changed, 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 recesses 16 is shown in the drawing, but actually, the pattern recesses 16 are further vertically arranged along the longitudinal direction of the projections 10. Are lined up.
[0013]
As one countermeasure against this problem, as shown in FIG. 19, the surface pattern 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 reality, when the upper surface of the convex portion 10 is a dot concave portion 13 (see FIG. 13) as in the prior art, air is confined without the sealing material entering the dot concave portion 13 during transfer. In some cases, unevenness in the thickness of the sealing material or air bubbles may occur in the printing result.
[0014]
Therefore, there is provided 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 accuracy of a sealing 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 the printing material transferred from the printing material developing member on a substrate. A printing plate for transfer. The printing material spreading member has first striped grooves on the surface thereof. This printing plate has a convex portion corresponding to a line figure to be printed on the substrate on the surface. This convex part has the 2nd striped groove | channel on the upper surface. The printing material spreading member and the printing plate are arranged such that the first striped groove and the second striped groove intersect each other when the printing material is transferred from the printing material spreading member to the printing plate. Has been placed. By adopting this configuration, interference between the stripes can be prevented by intersecting the first stripe grooves and the second stripe grooves, and high-precision printing with excellent linearity can be achieved.
[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, it is possible to perform printing on the printing material by rolling the printing plate, so that it can be used in a general flexographic printing machine.
[0017]
Preferably, in the above invention, the second striped grooves are 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. Yes. By adopting this configuration, it is possible to prevent the phenomenon that the printing material falls into 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 linear graphic transfer printing method, the step of 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; and transferring the printing material from the printing plate to the printing material to transfer the line to the printing material. And a main transfer step for printing a figure. A second striped groove is formed on the surface of the convex portion. In the preliminary transfer step, the printing material developing member and the printing plate are brought into contact so that the first striped grooves and the second striped grooves intersect each other. By adopting this method, interference between stripes can be prevented by intersecting the first stripe grooves and the second stripe grooves, and high-precision printing with excellent linearity can be achieved.
[0019]
Preferably, in the above invention, 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 substrate. By adopting this method, transfer from the printing plate to the substrate can be performed with high accuracy.
[0020]
Preferably, in the above invention, the second striped grooves are arranged so as to intersect with a tangent line when the printing plate is brought into contact with the substrate in the main transfer step. By adopting this method, printing can be smoothly performed while preventing the phenomenon that the printing material falls into a ball shape and deteriorates the 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 transfer printing device described above. 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 be made highly reliable.
[0022]
Preferably, in the above invention, the printing material is a sealing material for defining the outer periphery of the liquid crystal layer. By adopting this method, the liquid crystal layer can be made highly accurate and reliable.
[0023]
Preferably, in the above invention, the linear figure is a substantially annular figure. By adopting this method, the main part of the display device, such as a highly reliable liquid crystal layer, can be formed using the printed linear figure.
[0024]
DETAILED DESCRIPTION OF THE INVENTION
Prior to the description of the embodiment of the present invention, first, a technique (hereinafter referred to as “reference technique”) which is a reference for the present invention will be described with reference to FIG. In this reference technique, striped grooves are formed obliquely on the upper surface of the convex portion 10 of the printing plate 5. The striped groove on the upper surface of the convex portion 10 is hereinafter referred to as “second striped groove” 115. By doing in this way, the problem of the bubble like the dot recessed part 13 of the conventional convex part 10 upper surface can be avoided. In particular, by making the second striped groove 115 oblique to the direction of the frame-shaped side of the sealing material, it is not necessary to create a place where the groove length is extremely long in any part of the frame shape. Air easily escapes from the inside of the groove, and can be prevented from remaining as bubbles during printing on the substrate 9.
[0025]
However, there was a new problem even if the application of this reference technology was considered. 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 and Due to the difference in pitch with the second striped grooves 115, the stripes interfere with each other, and unevenness of overlapping density occurs in a striped manner. Such striped unevenness forms a portion of the upper surface of the convex portion 10 of the printing plate 5 where the sealing material is thickly attached in a striped pattern. Therefore, when the sealing material 7 is transferred from the printing plate 5 to the substrate 9, the above-mentioned protrusion phenomenon occurs in the portion where the sealing material is thickly attached, and the contour of the sealing material 12 that should be printed in a straight line is linear. Will be lacking.
[0026]
Accordingly, the present inventors have made extensive studies to solve such problems and obtain a more excellent transfer printing apparatus, transfer printing method, and display device manufacturing method using the transfer printing apparatus. Invented.
[0027]
(Embodiment 1)
(Transfer printing device)
With reference to FIG. 1, the transfer printing apparatus in Embodiment 1 based on this invention is demonstrated. This transfer printing apparatus is a flexographic printing machine. In this flexographic printing machine, an anilox roll 2 as a printing material developing member and a plate cylinder 6 having a printing plate 5 held or formed on its surface are arranged so as to be in contact with each other 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 machine shown in FIG. The positional relationship and role of the dispenser 1 and the doctor roll 3 are the same. However, unlike the conventional flexographic printing machine shown in FIG. 19, the flexographic printing machine in the present embodiment has striped grooves formed obliquely on the upper surface of the convex portion 10 of the printing plate 5. In the flexographic printing machine 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 convex portion 10 of the printing plate 5 are provided. This is referred to as “second striped groove” 15. As described above, the seal 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 circumscribing each other. At this time, as shown in FIG. The striped grooves are fed toward the tangent line between the anilox roll 2 and the printing plate 5 and overlap each other. As an example of providing a striped groove 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 technique is also applicable. In the flexographic printing machine, unlike the flexographic printing machine based on the reference technique in which the striped groove is simply provided on the upper surface of the convex portion 10, the first striped groove 14 and the second striped groove 15 are the anilox roll 2. And the printing plate 5 are arranged so as to intersect when they overlap.
[0028]
(Action / Effect)
As shown in FIG. 3, the printing plate 5 that has received the transfer of the sealing material 7 rolls while contacting the surface of the substrate 9 as a printed material at a tangent 42 to transfer the sealing material. In this example, the plate cylinder 6 rotates at the same position, and transfer is performed by feeding the stage 4 on which the substrate 9 is placed. In FIG. 3, only the main part is shown and the anilox roll 2, the doctor roll 3, etc. are not shown.
[0029]
Thus, a printed sealing material 12 is formed on the surface of the substrate 9. The direction of the printing plate 5 in contact with the substrate 9 at this time, that is, the direction in which the printing plate 5 advances toward the tangent line 42 is represented 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, during the transfer from the anilox roll 2 to the printing plate 5, the first striped groove 14 and the second striped groove 15 intersect and overlap each other, and the arrow 41 and the second stripe It is preferable that the groove 15 intersects the groove 15 obliquely instead of in parallel. The fact that the arrow 41 and the second striped groove 15 intersect with each other means that the second striped groove 15 and the tangent line 42 intersect each other. In this case, the occurrence of bubbles is prevented by the presence of the striped grooves, and the first striped grooves 14 and the second striped grooves 15 intersect not in the same direction but as shown in FIG. Interference can be prevented, and high-precision printing with excellent linearity can be performed.
[0030]
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 grooves 15 intersect the tangent line 42. That is, as shown in FIG. 6, it is necessary that the arrow 41 and the second striped groove 15 intersect at an angle. In the case where the first striped groove 14 and the second striped groove 15 are orthogonal to each other, as shown in FIG. 7, the arrow 41 and the second striped groove 15 are orthogonal to each other. When the convex portion 10 of the printing plate 5 is detached from the substrate 9, the sealing material 7, which is a printing material, becomes a ball and falls outside the area to be printed on the substrate 9, deteriorating linearity. It is because it makes it. 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, but the first in the convex portion 10. Since the length of the two striped grooves 15 becomes long, a problem of bubbles occurs, which is not preferable. In FIGS. 7 and 8, since it is assumed that the orientation of the convex portion 10 is parallel to the arrow 41, this is not preferable, but the orientation of the convex portion 10 itself is indicated by the arrow 41. However, this is not the case when it is slanted.
[0031]
(Embodiment 2)
(Transfer printing method)
With reference to FIG. 1, the transfer printing method in Embodiment 2 based on this invention is demonstrated. This transfer printing method is a flexographic printing method and can be performed using the flexographic printing machine shown in FIG. That is, the anilox roll is formed by hanging the seal material 7 as a printing material on the surface of the anilox roll 2 having a first striped groove 14 on the outer peripheral surface by the dispenser 1 and spreading it with the doctor roll 3. First, a process of applying the sealing material 7 to the surface of 2 is performed. Further, the anilox roll 2 rotates, and a preliminary transfer process is performed in which the seal material 7 is transferred to the plate cylinder 6 holding the printing plate 5 on the surface. A second striped groove 15 is provided on the upper surface of the convex portion 10 of the printing plate 5, and the first striped groove 14 and the second striped groove 15 are formed when the anilox roll 2 and the printing plate 5 overlap each other. It is 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 convex portion 10. Thus, the main transfer process is performed in which the sealing material is transferred from the printing plate 5 to the substrate 9 as the substrate to be printed, and a linear figure is printed as shown in FIG.
[0032]
(Action / Effect)
With such a transfer printing method, while the generation of bubbles during transfer is prevented by the striped grooves, the first striped grooves 14 and the second striped grooves 15 are, as shown in FIGS. Since it intersects, stripe-like unevenness due to interference between stripes does not occur, and a linear figure with excellent 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)
(Manufacturing method of display device)
A method of manufacturing the display device in the third embodiment based on the present invention will be described. This display device manufacturing method uses the transfer printing apparatus described in the first embodiment to print a sealing material 12 on the surface of a substrate 9 which is a transparent substrate of a liquid crystal display device as shown in FIG. Includes printing process. In the substrate 9 on which the sealing material 12 is printed in this way, 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 the sealing material is printed by this transfer printing apparatus, it is possible to perform printing with high linearity while preventing air bubbles from being mixed into the sealing material 12, so that bubbles in the sealing material may burst in a later process. Thus, a liquid crystal can be stably and reliably displayed without leaking the liquid crystal that should have been sealed.
[0035]
Note that the printing pattern of the sealing material is not limited to a simple rectangular frame shape, but may be other shapes. However, considering that the liquid crystal is sealed inside, it is preferable that the ring is substantially annular.
[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-described embodiments, the flexographic printing machine has been described as an example of the transfer printing apparatus, and the flexographic printing method has been described as an example of the transfer printing method. However, the present invention is not limited to flexographic printing, but 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 that case, the striped grooves provided on the convex portions provided on the flat plate-like printing plate and the striped grooves provided on the printing material developing member intersect with each other when they overlap for transfer. If so, 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. Moreover, even if a to-be-printed material is general boards and sheets other than the board | substrate of a display apparatus, the effect that it can print with high linear accuracy by this invention can be acquired. In each of the above-described embodiments, an example in which only one frame shape is printed on the surface of a single substrate as a substrate to be printed has been described. In this case, a plurality of frame shapes are printed on the surface of a single substrate. In addition, the present invention can be applied. In each of the above embodiments, the figure to be printed has been described with an example of a frame shape as an example of a linear figure. However, even if it is a figure other than a linear figure, the printing accuracy is improved by applying the present invention. Can be made. However, particularly in the case of a linear figure, the effect of preventing bubbles from being mixed by the striped grooves can be exhibited well, which is preferable. Further, in the case of a linear figure, since the accuracy of the thickness of a printed line is often a problem, the present invention contributes greatly.
[0039]
In addition, the said embodiment disclosed this time is an illustration in all the points, Comprising: It 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 grooves and the second stripe grooves. Since it is possible to prevent unevenness in the attachment, it is possible to perform high-precision printing with excellent linearity when printing on a printing material.
[Brief description of the drawings]
FIG. 1 is a conceptual diagram of a transfer printing apparatus according to a first embodiment based on 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 showing a state in which transfer is performed from a printing plate of the transfer printing apparatus according to the first embodiment of the present invention to a substrate.
FIG. 4 is an explanatory diagram of a first example of the overlapping state of the first striped grooves and the second striped grooves 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 overlapping state of the first striped grooves and the second striped grooves 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 overlapping state of the first striped grooves and the second striped grooves in the transfer printing apparatus according to the first embodiment of the present invention.
FIG. 7 is an explanatory view of a fourth example of the overlapping state of the first striped grooves and the second striped grooves 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 overlapping state of the first striped grooves and the second striped grooves in the transfer printing apparatus according to the first embodiment of the present invention.
FIG. 9 is a conceptual diagram when 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 the 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 the 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 when a sealing 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 the convex portions and pattern concave portions of the printing plate overlap when a seal material is to be printed by a transfer printing apparatus based on the conventional technology.
FIG. 16 is an explanatory diagram showing a state of a convex portion of a printing plate when a sealing 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 object when a sealing material is about to be printed by a transfer printing apparatus based on a conventional technique.
FIG. 18 is an explanatory diagram of a second example showing how the convex portions and the pattern concave portions of the printing plate overlap when a seal material is to be printed by a transfer printing apparatus based on the conventional technology.
FIG. 19 is a conceptual diagram of a second example when 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 technique.
FIG. 21 is an explanatory diagram of problems in the transfer printing apparatus based on the reference technique.
[Explanation of symbols]
1 dispenser, 2 anilox roll, 3 doctor roll, 4 stage, 5,105 printing plate, 6 plate cylinder, 7 sealing material, 9 substrate, 107 alignment film material, 10,110 convex portion, 12 (printed) sealing material , 13 Dot convex part (on the printing plate surface) 14, 114 First striped groove, 15, 115 Second striped groove, 16, 16a, 16b, 16c Pattern concave part (on the anilox roll surface), 17 Ridge line, 18 (Seal is thick) 19, (Seal is thin), 41 (Print plate is in contact with substrate) arrow, 42 tangent.

Claims (9)

A printing material developing member for applying and spreading the printing material on the surface;
A printing plate for transferring the printing material transferred from the printing material developing member to a substrate;
The printing material spreading member has a first striped groove on its surface,
The printing plate has a convex portion corresponding to a linear figure to be printed on the substrate on its surface,
The convex part has a second striped groove on its upper surface,
The printing material spreading member and the printing plate are arranged such that the first striped groove and the second striped groove intersect each other when the printing material is transferred from the printing material spreading member to the printing plate. Arranged transfer printing device. 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 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. The transfer printing apparatus as described. A method for transferring and printing linear figures,
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;
A main transfer step of printing the linear figure on the printing material by transferring the printing material from the printing plate to the printing material,
A second striped groove is formed on the surface of the convex portion,
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 striped grooves and the second striped grooves intersect each other. The printing plate includes a curved surface, and the printing operation portion is formed on the outer surface of the curved surface, and the main transfer step is performed by rolling the printing plate relative to the surface of the printing material. The transfer printing method according to claim 4. 6. The transfer printing method according to claim 5, wherein the second striped grooves are arranged so as to intersect a tangent when the printing plate is brought into contact with the substrate in the main transfer step. The manufacturing method of a display apparatus including the board | substrate printing process which prints the said linear figure on a board | substrate using the transfer printing apparatus of Claim 1. The method for manufacturing a display device according to claim 7, wherein the printing material is a sealing material for defining an outer periphery of a liquid crystal layer. The display device manufacturing method according to claim 8, wherein the linear figure is a substantially annular figure.

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