JP2005031191A - Resin coated substrate and apparatus for manufacture the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus for manufacturing a resin coated substrate for letterpress reverse printing with high accuracy and the resin coated substrate which can enhance the quality of color filters etc. <P>SOLUTION: The resin coated substrate is formed by applying a plurality of kinds of resins with regularity in their arrangement respectively by letterpress reverse printing on a substrate and is so constituted that the independent layers of the coated resins are respectively formed to uniform film thicknesses and flat shapes. The apparatus for manufacturing the resin coated substrate is equipped with a movable frame for installing a resin transferring means and a moving means for moving the movable frame relative to a stationary frame. The moving means is equipped with a pair of parallel guide rails which are installed to the stationary frame and support the movable frame. The stationary frame is equipped with a horizontal surface pressing means and perpendicular surface pressing means which are provided with a pair of horizontal surfaces and a pair of perpendicular surfaces subjected to polishing after integral fixing of the stationary frame to support the pair of the guide rails respectively in a perpendicular direction and horizontal direction and which presses the guide rails. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a resin-coated substrate on which a plurality of colors of resin are applied, and an apparatus for manufacturing the same, used for an electronic display device, for example, a color filter (hereinafter also referred to as “CF”) for colorizing a liquid crystal display.
[0002]
[Prior art]
Based on FIG. 6 to FIG. 9, the above-described color filter (CF) will be described as an example with respect to all conventional substrates having a plurality of resin layers on the surface. FIG. 6 is an explanatory diagram of a manufacturing process of a substrate by a conventional pigment dispersion method, FIG. 7 (a) is an explanatory diagram of three-color CF by the pigment dispersion method, and (b) is a light-shielding resin (black matrix: 4 is an explanatory diagram of a four-color CF including “BM”. FIG. 8 is an explanatory diagram of three-color CF by the electrodeposition method, FIG. 9A is an explanatory diagram of CF by the conventional three-color printing method, and FIG. 8B is an explanatory diagram of CF by the conventional three-color printing method having BM. FIG.
[0003]
Conventionally, the pigment dispersion method is most often used for the production of CF, which is a substrate having a resin layer of a plurality of colors on its surface. The outline of the pigment dispersion method is as follows. A CF is prepared by repeating the steps of applying a colored photosensitive resin (color resist), drying, exposure, and development for the number of colors.
[0004]
For example, in the case of the three-color CF 10a, as shown in FIG. 6, (a) the first-color resist r1 is applied on the substrate 1 and dried. (B) Exposure e with the first-color mask m1. (C) First color resin c1, development and drying. (D) The second color resist r2 is applied and dried. (E) Exposure e with the second-color mask m2. (F) Second color resin c2, development and drying. (G) A third-color resist r3 is applied and dried. (H) Exposure e with the third-color mask m3. (I) It is necessary to repeat the steps of coating, drying, exposure, and development by the number of colors, such as the third color resin c3, development / drying, and the pigment dispersion method has many steps and enormous facilities. It becomes an investment.
[0005]
Therefore, a large amount of resist (for example, r1 to r3) used in each process is used, and most of the resist is discarded as a residual agent. Due to the huge cost of equipment and the like, it is discussed whether it is possible to cope with the increase in the size of the substrate desired in the near future.
[0006]
In addition, since the surface flatness of CF is based on lamination after drying for each color, the three colors CF10a of red R, green G, and blue B in FIG. 7A, and the black matrix (BM) in (b). As shown in the four-color CF10b including, the surface shape is individual for each color and smoothness cannot be obtained, resulting in variations in liquid crystal thickness for liquid crystal and causing display unevenness. For this reason, the coating thickness is increased, which is a quality problem.
[0007]
As shown in FIG. 8, the CF 11 by the electrodeposition method in which the charged color resin is electrically colored forms an ITO (Indium Tin Oxide) electrode 2 on the substrate 1, and selects, colors and drys the electrodes. It is manufactured repeatedly by the number.
[0008]
Therefore, in the electrodeposition method, the manufacturing process of the ITO electrode 2 increases in cost, and in principle, the ITO electrode 2 is formed under the CF, which causes deterioration in display quality due to dielectric constant, transmittance, and the like. . In addition, the formation of BM is impossible in principle, and when BM is required, another means is required, and the cost is increased.
[0009]
In the case of the three-color CF12a, the conventional CF manufactured by three-color printing has a problem of smoothness, a problem of smoothness, a polishing process, etc., because each color resin is dried for each color by the intaglio offset method. There was a problem of up. In the lithographic offset method for simultaneous printing of three colors as shown in FIG. 9 (a), there is a problem that a bulge 3 and a wave of a boundary line 4 are generated between each color resin (for example, R, G, B).
[0010]
In the case of CF12b having a BM as shown in FIG. 9B, the BM is formed by the three-color simultaneous printing and drying after the BM is formed by the pigment dispersion method, resulting in an increase in cost due to the BM formation step by the pigment dispersion method. In terms of quality, the ink protrusion 5 at the pixel boundary has been a problem.
[0011]
On the other hand, recently, a method for producing a resin-coated substrate by applying a plurality of resins on a substrate by letterpress reverse printing has been studied (Japanese Patent Laid-Open No. 11-58921: Patent Document 1, Japanese Patent Laid-Open No. 11-2009). No. 198337: Patent Document 2, JP 2000-289320 A: Patent Document 3, etc.). The basic resin coating process of letterpress reverse printing will be schematically described below with reference to FIG.
[0012]
As shown in FIG. 10A, a resin 23 of one color is applied to a transfer cylinder (blanket cylinder) 20 having a resin-repellent sheet 21 mounted on the surface by a resin application device 22 (resin application process). Thereafter, as shown in (b), the resin-coated surface of the transfer cylinder 20 is pressed against the relief plate 24 formed in a predetermined shape to transfer and remove the resin 23 to the convex portion 25 of the relief plate 24 (resin removal step). . The resin 26 remaining on the resin application surface is transferred to the substrate 1 as shown in (c) (resin transfer step), and one color resin is applied to the substrate 1, and this is sequentially performed for each number of colors. Thus, a resin-coated substrate is manufactured.
[0013]
In addition, a resin-coated substrate manufactured by applying a plurality of resins 23a to 23n on the substrate 1 by letterpress reverse printing as described above is manufactured by a manufacturing apparatus based on the concept of a conventional printing machine as shown in FIGS. Manufacturing was under consideration. FIG. 11 is a side view showing a configuration outline of a conventional resin coated substrate manufacturing apparatus, and FIG. 12 is a cross-sectional view taken along line YY in FIG.
[0014]
On the fixed frame 30, plate surface plates 31 a to 31 n on which the relief plates 24 a to 24 n are placed are placed in series (in the left-right direction X in FIG. 10) in a predetermined number, and one printing surface plate 32 on which the substrate 1 is placed. The applicators 34a to 34n corresponding to the resins 23a to 23n of the respective colors are also installed in a predetermined number in series in the X direction in the figure. In the figure, reference numeral 33 denotes a coating roller of the coating devices 34a to 34n.
[0015]
Further, a movable frame 35 that moves back and forth (X direction in the figure) is supported on the fixed frame 30, and a transfer cylinder (a blanket) on which a resin-repellent sheet 21 treated with a resin-repellent treatment is mounted on the movable frame 35. Cylinders) 20a to 20n are mounted in a predetermined number, and when the movable frame 35 moves back and forth, each transfer cylinder 30a to 30n rolls between the determined relief plates 24a to 24n and the substrate 1 respectively. Then, a predetermined number of color images are sequentially formed on the substrate 1.
[0016]
As shown in FIG. 12, the fixed frame 30 of the conventional resin coated substrate manufacturing apparatus 50 includes a driving side fixed frame 30a on one of the left and right sides with respect to the traveling direction X of the movable frame 35, and an operation side on the other side. The stationary frame 30b is connected by a stay 30c.
[0017]
The movable frame 35 is also configured by connecting the drive side movable frame 35a on the drive side fixed frame 30a and the operation side movable frame 35b on the operation side fixed frame 30b with a stay (not shown).
[0018]
The movable frame 35 is slidably supported via a slider 37 on a pair of guide rails 36a and 36b attached to the drive side fixed frame 30a and the operation side fixed frame 30b in parallel with each other in the X direction. Yes.
[0019]
In addition, the movable frame 35 supports a plurality of transfer cylinders 20a to 20n whose axis lines are perpendicular to the running direction X and horizontally oriented in the X direction, and are supported via a rotary bearing 38 and an eccentric bearing 39.
[0020]
A pair of pinions 40a and 40b are coaxially provided on both end sides of each transfer cylinder 20a to 20n, and are arranged on the driving side fixing frame 30a and the operation side fixing frame 30b in parallel with the pair of guide rails 36a and 36b, respectively. A pair of racks 41a and 41b, which are attached in parallel to each other, are engaged with each other.
[0021]
In FIG. 12, reference numeral 42 denotes an appropriate movement drive device that moves the movable frame 35 relative to the fixed frame 30 in the traveling direction.
[0022]
In the conventional resin coated substrate manufacturing apparatus 50 as described above, the movable drive unit 42 moves the movable frame 35 in the traveling direction X without swinging on the guide rails 36 a and 36 b of the fixed frame 30 via the slider 37. Accordingly, the transfer cylinders 20a to 20n are rotated by the racks 41a and 41b and the pinions 40a and 40b to come into contact with the applicators 34a to 34n, the relief plates 24a to 24n, and the substrate 1, and the resins 23a to 23n of the respective colors. In turn, it is possible to carry out letterpress transfer printing comprising the above-mentioned “resin application step”, “resin removal step”, and “resin transfer step”. Further, the eccentric bearing 39 is rotated by an appropriate driving device (not shown) so that each of the transfer cylinders 20a to 20n is raised by a certain amount, and can be moved without contacting the relief plates 24a to 24n, the substrate 1, and the like. It is to make.
[0023]
[Patent Document 1]
Japanese Patent Laid-Open No. 11-58921 (page 2, FIG. 1, FIG. 2)
[Patent Document 2]
JP-A-11-198337 (second page, FIG. 1)
[Patent Document 3]
JP 2000-289320 A (2nd page, FIG. 1)
[0024]
[Problems to be solved by the invention]
However, in the conventional resin coated substrate manufacturing apparatus 50 as described above, the movable frame 35 moves on the pair of guide rails 36a and 36b attached to the fixed frame 30 via the slider 37. Since the frame 30 is assembled by connecting the drive side fixed frame 30a and the operation side fixed frame 30b with the stay 30c, the frame 30 is fixed to the mounting surface processed with accuracy before the fixed frame 30 is assembled. There is a limit to the linearity and parallelism of the guide rails 36a and 36b, and it is difficult to avoid deviation even after the apparatus is installed. As a result, there is a limit to the accuracy of resin removal from each transfer cylinder 20a to 20n to each relief plate 24a to 24n, the position of resin transfer from each transfer cylinder 20a to 20n to the substrate 1, and the shape distortion.
[0025]
Therefore, with a resin coating thickness of 1 to several μm, it is necessary to print in a predetermined pattern (especially when printing BM, several μ width is required) without any disturbance in the boundary or thickness of each color resin. In the case of a resin-coated substrate used as a filter (CF), letterpress reversal printing can be printed with high accuracy, and all the advantages of manufacturing a resin-coated substrate by printing and reducing costs are very high. An apparatus for producing a resin-coated substrate that can fully utilize the above has not been obtained. As a result, it has not been solved what resin-coated substrate should be formed by letterpress reverse printing.
[0026]
The present invention eliminates the problems of such a conventional resin-coated substrate and its manufacturing apparatus, and enables a highly accurate relief printing printing apparatus and a color filter made possible by the manufacturing apparatus. It is an object of the present invention to provide a resin-coated substrate that can improve product quality such as the above.
[0027]
[Means for Solving the Problems]
(1) The present invention has been made to solve the above problems, and as a first means, a resin in which a plurality of types of resins are applied on a substrate by letterpress reverse printing with regularity in arrangement. In the coated substrate, there is provided a resin coated substrate, wherein each of the coated single layers of the resin is formed to have a uniform and flat film thickness.
[0028]
According to the first means, since a plurality of types of resins are printed by letterpress reversal printing, there is little resin remaining on the letterpress and the transfer cylinder, and the thickness of the single layer of each resin arranged and applied in a plane is uniform and By being formed flat, when used as a color filter such as a liquid crystal display, the quality of products using the resin-coated substrate is improved. For example, the thickness unevenness of the liquid crystal is reduced and the display unevenness is reduced.
[0029]
In addition, even if the resin coated substrate is a sheet, it is included in the technical scope of the present invention from the gist of the present invention.
[0030]
(2) A second means is a resin-coated substrate according to the first means, wherein the thickness of the single layer of the applied resin is set for each of the various types. provide.
[0031]
According to the second means, in addition to the action of the first means, an optimum film thickness can be set for each color resin R, G, B for optical and mechanical properties, and as a color filter such as a liquid crystal display. When used, the quality of the product using the resin-coated substrate is improved, for example, more excellent color developability and display ability can be obtained.
[0032]
(3) Further, as a third means, in the resin-coated substrate of the first means or the second means, one of the two adjacent resins applied is necessarily a light-shielding resin. A coated substrate is provided.
According to the third means, in addition to the action of the first means or the second means, when used as a color filter such as a liquid crystal display, except for complicated processes and high cost conventionally required in forming a black matrix, In addition, the quality of products using resin-coated substrates has been improved, such as eliminating the problem that the color filter smoothness has been obstructed by other adjacent pixel resins in the black matrix area, and the overcoat can be omitted. The cost is reduced.
[0033]
(4) As a fourth means, in the resin-coated substrate of any one of the first means to the third means, the plurality of types of resins are sequentially applied without any intermediate drying process. A resin-coated substrate is provided.
[0034]
According to the fourth means, in addition to the action of any one of the first means to the third means, when used as a color filter such as a liquid crystal display, all kinds of resins do not undergo various drying steps. Since each resin is applied in sequence, each resin does not run on the other resin after drying, and no protrusions are formed, the flatness of the color filter is excellent, the liquid crystal thickness is less uneven, and the liquid crystal thickness is reduced. In addition, the quality of products using the resin-coated substrate is improved.
[0035]
(5) As a fifth means, a resin-coated substrate according to any one of the first to fourth means, wherein a resin adjacent to the resin-coated substrate is applied by tweezers. Coating substrate.
[0036]
According to the fifth means, in addition to the action of any one of the first to fourth means, when used as a color filter such as a liquid crystal display, the adjacent resins on the substrate do not overlap and have no gap. Since the color filter has high flatness, there is no pixel unevenness, no gaps between pixels, no display unevenness, excellent color development, and an extremely high quality color filter can be obtained. The quality of the product that had been improved.
[0037]
(6) As a sixth means, in a resin-coated substrate manufacturing apparatus for manufacturing a resin-coated substrate according to any one of the first to fifth means, a plurality of transfer cylinders having a surface having resin repellency, and the same transfer Resin application means for supplying a resin to the surface of the cylinder to form a resin application surface, resin removal means for removing a predetermined portion of resin from the resin application surface, and a portion of the resin remaining on the surface of the transfer cylinder Resin transfer means for transferring to the substrate; a fixed frame for installing the substrate; a movable frame for installing the resin transfer means; and a moving means for moving the movable frame relative to the fixed frame. The moving means includes a pair of parallel guide rails installed on the fixed frame and supporting the movable frame, and a moving driving means. The fixed frame is fixed after the fixed frame is fixed integrally. A plurality of horizontal plane pressing means for pressing the guide rail against the horizontal plane and the vertical plane, and a pair of vertical planes that are polished and support the pair of guide rails in vertical and horizontal directions, respectively. Provided is a resin coated substrate manufacturing apparatus comprising a plurality of vertical surface pressing means for pressing guide rails.
[0038]
According to the sixth means, the fixed frame has linearity after the fixing frame is integrally fixed so that the horizontal plane and the vertical plane that support the paired guide rails in the vertical direction and the horizontal direction make a pair, respectively. It is provided with high parallelism and polished. Both guide rails are pressed against the horizontal plane by the horizontal plane pressing means, and pressed against the vertical plane by the vertical plane pressing means, and are fixed by assembly. The disturbance of linearity and parallelism due to errors in the assembly of the fixed frame is reduced as much as possible, and errors after installation of the apparatus are extremely small.
[0039]
Therefore, the position of the transfer cylinder can be controlled with extremely high accuracy, and printing (resin application) of each color resin on the substrate can be performed with high accuracy.
[0040]
(7) As a seventh means, in the resin coated substrate manufacturing apparatus of the sixth means, the moving means includes a pair of racks installed in parallel with the pair of guide rails on the fixed frame, and the transfer cylinder. And a pair of pinions that are coaxially provided at both ends of the rack and mesh with the pair of racks, respectively.
[0041]
According to the seventh means, in addition to the action of the sixth means, the accuracy of the pair of racks installed in parallel with the pair of guide rails as the moving means is extremely high as compared with the prior art. Pinion rotation accuracy is also improved, and printing (resin application) accuracy is further improved.
[0042]
DETAILED DESCRIPTION OF THE INVENTION
Based on FIG. 1 and FIG. 2, the resin coated substrate manufacturing apparatus according to the first embodiment of the present invention will be described. FIG. 1 is a cross-sectional view of the resin coated substrate manufacturing apparatus according to the present embodiment corresponding to the YY arrow in FIG. 11 showing the above-described conventional apparatus, and FIG. 2 is an enlarged view of a portion H in FIG. is there.
[0043]
The resin-coated substrate manufacturing apparatus 100 of the present embodiment is the same as that of the conventional example except that the structure of the fixed frame 130 that supports the pair of guide rails 36a and 36b is different from the conventional example of FIG. 11 is omitted as referring to FIG. 11, and the same reference numerals are given to the same parts, and illustration or description thereof is omitted, and different points will be mainly described below.
[0044]
Also in the resin coated substrate manufacturing apparatus 100 of the present embodiment, a plurality of transfer cylinders 20a to 20n having a resin repellent sheet 21 on the surface, and resins 23a to 23n of respective colors are supplied to the surface to provide a resin coated surface. Applicators 34a to 34n as resin application means to be formed, relief plates 24a to 24n mounted on plate surface plates 31a to 31n as resin removal means to remove a predetermined portion of resin from the resin application surface, and transfer cylinders Transfer cylinders 20a to 20n as resin transfer means for transferring the resin remaining on the surfaces of 20a to 20n to the substrate 1, its rotation / lifting mechanism (a pair of racks, a pair of pinions, an eccentric bearing, etc.), and a substrate 1 as a moving frame for moving the movable frame 35 relative to the fixed frame 130. Idoreru 36a, and a mobile drive unit 42 as 36b and the moving drive means. As the movement drive device 42, an appropriate device with high positional accuracy such as a ball nut / ball screw is used. Note that the movable drive device 42 may be provided not only on the drive side fixed frame 130a side but also on the operation side fixed frame 130b side or both as shown in the figure.
[0045]
Also in the resin coated substrate manufacturing apparatus 100 of the present embodiment, the moving drive unit 42 does not cause the movable frame 35 to swing on the guide rails 36 a and 36 b of the fixed frame 130 via the slider 37. Accordingly, the transfer cylinders 20a to 20n are rotated by the racks 41a and 41b and the pinions 40a and 40b to come into contact with the applicators 34a to 34n, the relief plates 24a to 24n, and the substrate 1, and the resins 23a to 23a for the respective colors. The letterpress transfer printing consisting of the above-mentioned “resin application process”, “resin removal process”, and “resin transfer process” can be performed sequentially for 23n. Further, each of the transfer cylinders 20a to 20n can be moved up by a certain amount by the eccentric bearing 39 and moved without being in contact with the relief plates 24a to 24n or the substrate 1 or the like. In addition, after a predetermined number of colors of resin are applied onto the substrate 1 by letterpress transfer printing to sequentially form color images, drying is performed at the same time to complete a resin-coated substrate.
[0046]
In the resin coated substrate manufacturing apparatus 100 of the present embodiment, as shown in FIG. 1, the drive side fixed frame 130a and the operation side fixed frame 130b of the fixed frame 130 are integrated as a fixed structure with a stay 130c having high rigidity. It has become. The integral fixing structure is preferably formed by integral casting forging etc. from the beginning including the driving side fixing frame 130a, the operation side fixing frame 130b, and the stay 130c, but may be formed by firmly connecting and fixing by welding. Good.
[0047]
Further, as shown in FIG. 2, the fixed frame 130 has a horizontal surface 151 a and a vertical surface 152 a that support the guide rail 36 a in the vertical direction and the horizontal direction, and is polished with high linearity after the fixed frame 130 is integrally fixed. Similarly, in FIG. 2, the horizontal surface 151b and the vertical surface 152b that support the guide rail 36b in the vertical direction and the horizontal direction are polished and provided with high linearity after the fixing frame 130 is integrally fixed. Yes. In addition, the horizontal plane 151a and the horizontal plane 151b form the same plane and the vertical plane 152a and the vertical plane 152b form a parallel plane, and the parallel plane 151a and the horizontal plane 151b form a pair. Polished with high surface and parallelism.
[0048]
The guide rail 36a is pressed against the horizontal surface 151a by a plurality of fixing bolts 153 as horizontal surface pressing means for pressing the guide rail 36a against the horizontal surface 151a, and a wedge-shaped fixing plate 154 as vertical surface pressing means for pressing the guide rail 36a against the vertical surface 152a. And the fixing bolt 155 is pressed against the vertical surface 152a and fixed.
[0049]
Similarly, the guide rail 36b is pressed against the horizontal surface 151b by a plurality of fixing bolts 153 as horizontal surface pressing means for pressing the guide rail 36b against the horizontal surface 151b, and is fixed in a wedge shape as vertical surface pressing means for pressing the guide rail 36b against the vertical surface 152b. The plate 154 and its fixing bolt 155 are pressed against the vertical surface 152b to be assembled and fixed.
[0050]
Therefore, the paired guide rails 36a and 36b are assembled and fixed on the fixed frame 130 which is integrally fixed, with the horizontal and vertical surfaces having high linearity and parallelism as the mounting surfaces. Disturbances in linearity and parallelism due to the above are reduced as much as possible, and errors after installation of the apparatus are extremely small.
[0051]
Therefore, according to the resin coated substrate manufacturing apparatus 100 of the present embodiment, the transfer cylinders 20a to 20n can be controlled with extremely high accuracy, and printing of the color resins 23a to 23n on the substrate 1 can be performed with high accuracy. . In particular, as the moving means, the accuracy of the pair of racks 41a and 41b installed in parallel with the pair of guide rails 36a and 36b is extremely higher than that of the prior art, so the accuracy of rotation of the pair of pinions 40a and 40b is also high. The printing accuracy is further improved. Therefore, it becomes possible to manufacture a resin-coated substrate with improved product quality.
[0052]
Hereinafter, a resin-coated substrate as a second embodiment of the present invention will be described with reference to FIG. FIG. 3 is a cross-sectional view of the resin-coated substrate of the present embodiment.
[0053]
The color filter (CF) 110a as the resin-coated substrate of this embodiment can be manufactured by the resin-coated substrate manufacturing apparatus 100 of the first embodiment as a three-color printing machine, and is an ink-repellent treated silicon blanket. Etc. are mounted on transfer cylinders of each color (red R, green G, blue B), and three plates are produced by etching glass as a relief plate. Each relief plate of red R, green G, blue B is printed on each printing platen. Are installed in a predetermined relationship. Each of the applicators is prepared with red R, green G, and blue B colored resins, and each transfer cylinder is coated with the corresponding resin so as to have the same film thickness after drying. As the movable frame moves, each transfer cylinder rolls on the corresponding relief plate to form an image on the transfer cylinder, and further sequentially transfers the image onto the substrate, transfers all the resin, and then simultaneously dries.
[0054]
As shown in FIG. 3, the produced CF 110a was printed with red R, green G, and blue B by letterpress reversal printing, so that there was little resin remaining on the letterpress and transfer cylinder, and each resin arranged and applied in a plane. The single layer is formed uniformly and flatly. Therefore, when used as a CF for a liquid crystal display or the like, the thickness unevenness of the liquid crystal is reduced and the display unevenness is reduced.
[0055]
In addition, since each resin is applied in sequence without any drying process for each resin, each resin does not run on the other resin after drying to form protrusions, and the flatness of CF110a is excellent. Thus, a display with less display unevenness can be obtained even when the liquid crystal thickness is reduced.
[0056]
Further, on the premise that resin coating with extremely high accuracy is possible, the CF 110a of the present embodiment removes adjacent resin on the substrate 1 that has been difficult in the past (forms a boundary without overlapping or gaps). The CF 110a has high flatness, no pixel unevenness, no gap between pixels, no display unevenness as CF, excellent color development, and extremely high quality CF can be obtained.
[0057]
A resin-coated substrate as a third embodiment of the present invention will be described with reference to FIG. FIG. 4 is a cross-sectional view of the resin coated substrate of the present embodiment.
[0058]
The color filter (CF) 110b as the resin-coated substrate of the present embodiment can be manufactured by the resin-coated substrate manufacturing apparatus 100 of the first embodiment as a four-color printing machine. Same as the second mobile phone CF 110a except that the black matrix BM is added to the green G and blue B
That is, one of the adjacent resins applied on the substrate is formed so as to be BM (light-shielding resin), and BM is applied by letterpress reversal printing that can accurately set a narrow resin coating width of μm order. In consideration of the fact that it can be printed in parallel with each color resin, it is a CF with BM by letterpress reversal printing, which has the features and effects of the resin-coated substrate of the second embodiment, and the complexities required in conventional BM formation In addition, the conventional BM portion also eliminates the problem that other adjacent pixel resins run on and obstruct the CF smoothness.
[0059]
Based on FIG. 5, a resin coated substrate as a fourth embodiment of the present invention will be described. FIG. 5 is a cross-sectional view of the resin-coated substrate of the present embodiment.
[0060]
The color filter (CF) 110c as the resin-coated substrate of the present embodiment can be manufactured by the resin-coated substrate manufacturing apparatus 100 of the first embodiment as a three-color printing machine. The point that the green G and blue B resins are applied on the substrate 1 is the same as that of the CF 110a of the second embodiment, except that the thickness of the single layer is set for each color resin. There is.
[0061]
In the CF 110c of the present embodiment, attention is paid to the fact that the resin coating surface is not necessarily required to be pressed and smoothed and the coating thickness of each color can be set individually in the resin coating by letterpress reverse printing, and each color resin R, G, Optimum conditions can be set for the optical and mechanical properties of each B. In addition to the common effects such as the application of tweezers and the application of BM by letterpress reversal printing, color development as CF110c CF with better properties and display capability can be obtained.
[0062]
The characteristics of the resin coated substrates 110a to 10b shown as the second to fourth embodiments will be described below in a superimposed manner.
[0063]
The letterpress reverse printing method is based on the basic principle that 100% of the resin is transferred by the resin repellent sheet of the letterpress and the transfer cylinder, so that there is no resin stringing phenomenon that occurs during transfer in normal printing. Both the shape and definition of the image can be made inferior to those obtained by the photolithography process, which is generally called the pigment dispersion method. In addition, since multiple colors are formed sequentially by wet, and finally dried simultaneously, the film flatness having individual colors as shown in FIG. 7 (a) is created under the influence of the dried previous color as in the photolithography process. Since the next color can be inserted without being formed, CFs with uniform film thickness can be produced, which can contribute to the improvement of display quality. Further, since the ITO film is not formed under the CF unlike the electrodeposition method shown in FIG. 8, a flat CF can be made without degrading the display quality.
[0064]
When the BM is used, in the pigment dispersion method shown in FIG. 7B and the three-color printing method shown in FIG. 9B, the color resin rides on the BM to form protrusions. In the embodiment, simultaneous drying is performed after four colors are sequentially printed, so that the registration of each color can be stabilized by presetting with each relief plate, and further, by simultaneous drying, as shown in FIG. As a result, the CFs can be formed without overlapping and no protrusions on the BM are formed. Therefore, it is possible to shorten the process, such as eliminating the overcoat. In addition, if the coating film thickness is set for each color, the coloring effect of each color of red R, green G, and blue B can be enhanced.
[0065]
Although the present invention has been described with reference to the illustrated embodiment, the present invention is not limited to the above-described embodiment, and various modifications may be made to the specific structure within the scope of the present invention. Nor.
[0066]
The resin-coated substrates according to the second to fourth embodiments have been described with reference to an example of a color filter for colorizing an electronic display device, for example, a liquid crystal display. The coated substrate is not limited to a color filter, and is widely applied to a general resin coated substrate, and the quality of a product using the resin coated substrate can be improved by the feature.
[0067]
Further, the resin coated substrate manufacturing apparatus according to the first embodiment is not limited to the color filter manufacturing apparatus, and can be widely applied generally as a highly accurate resin coated substrate manufacturing apparatus.
[0068]
【The invention's effect】
(1) According to the invention of claim 1, since printing is performed by letterpress reversal printing, there is little resin remaining on the letterpress and the transfer cylinder, and the single layer thickness of each applied resin is formed uniformly and flatly. When used as a color filter such as a liquid crystal display, the quality of a product using a resin-coated substrate is improved, for example, the thickness unevenness of the liquid crystal is reduced and the display unevenness is reduced.
[0069]
(2) According to the invention of claim 2, in addition to the effect of the invention of claim 1, an optimum film thickness can be set for the optical, mechanical and other properties for each of the color resins R, G and B, and a liquid crystal display When used as a color filter, the quality of products using a resin-coated substrate is improved.
[0070]
(3) According to the invention of claim 3, in addition to the effect of claim 1 or claim 2, when used as a color filter such as a liquid crystal display, the complicated process and high cost conventionally required in the formation of a black matrix can be achieved. In addition, the quality of products using a resin-coated substrate has been eliminated, such as eliminating the problem that the other black pixel resin has run on other adjacent pixel resins and hindering the smoothness of the color filter. Is improved and the cost is reduced.
[0071]
(4) According to the invention of claim 4, in addition to the effects of any one of claims 1 to 3, when used as a color filter such as a liquid crystal display, each resin undergoes a drying process for each type. All types are applied sequentially without causing each resin to run on the other resin after drying, creating projections, excellent flatness of the color filter, less uneven thickness of the liquid crystal, and less liquid crystal thickness. The quality of products using a resin-coated substrate is improved.
[0072]
(5) According to the invention of claim 5, in addition to the effects of the invention of any one of claims 1 to 4, when used as a color filter such as a liquid crystal display, adjacent resins on the substrate may overlap, Resin that has a flat surface with no color gaps, high color filter flatness, no pixel unevenness, no gaps between pixels, no display unevenness, excellent color development, and a very high quality color filter The quality of the product using the coated substrate is improved.
[0073]
(6) According to the invention of claim 6, the fixed frame is integrally fixed to the fixed frame so that the horizontal plane and the vertical plane that support the pair of guide rails in the vertical direction and the horizontal direction make a pair. Later, the guide rails are provided by being polished with high linearity and parallelism, and both guide rails are pressed against the horizontal plane by the horizontal plane pressing means and pressed against the vertical plane by the vertical plane pressing means. In the guide rail, linearity and parallelism disturbance due to errors in assembly of the fixed frame are reduced as much as possible, and errors after installation of the apparatus are extremely small.
[0074]
Therefore, the position of the transfer cylinder can be controlled with extremely high accuracy, high-precision printing (resin coating) of each color resin on the substrate is possible, and it is possible to manufacture highly accurate resin-coated substrates that improve product quality. Become.
[0075]
(7) According to the invention of claim 7, in addition to the effect of the invention of claim 6, the accuracy of the pair of racks installed in parallel with the pair of guide rails as the moving means is extremely high as compared with the prior art. Therefore, the rotation accuracy of the pair of pinions is improved, the printing (resin coating) accuracy is further improved, and the product quality can be further improved, and the resin coated substrate with higher accuracy can be manufactured.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a resin-coated substrate manufacturing apparatus according to a first embodiment of the present invention, corresponding to a view taken along arrows YY in FIG.
FIG. 2 is an enlarged view of a portion H in FIG.
FIG. 3 is a cross-sectional view of a resin-coated substrate as a second embodiment of the present invention.
FIG. 4 is a cross-sectional view of a resin-coated substrate as a third embodiment of the present invention.
FIG. 5 is a cross-sectional view of a resin-coated substrate as a fourth embodiment of the present invention.
FIG. 6 is an explanatory diagram of a substrate manufacturing process by a conventional pigment dispersion method.
7A is an explanatory diagram of a three-color CF by a pigment dispersion method, and FIG. 7B is an explanatory diagram of a four-color CF including a black matrix by a pigment dispersion method.
FIG. 8 is an explanatory diagram of a three-color CF by an electrodeposition method.
9A is an explanatory diagram of a CF by a conventional three-color printing method, and FIG. 9B is an explanatory diagram of a CF by a conventional three-color printing method having a black matrix.
FIG. 10 is a schematic explanatory diagram of a basic process of letterpress reverse printing.
FIG. 11 is a side view showing a schematic configuration of a conventional resin-coated substrate manufacturing apparatus.
12 is a cross-sectional view taken along arrow YY in FIG.
[Explanation of symbols]
1 Substrate
2 ITO electrode
3 excitement
4 border
10a 3 colors CF
10b 4 colors CF
11 CF by electrodeposition
12a 3 colors CF
CF with 12b BM
20 Transfer cylinder
20a-20n transfer cylinder
21 Resin repellent sheet
22 Resin coating device
23 Resin
23a-23n resin
24 letterpress
24a-24n letterpress
30 Fixed frame
30a Drive side fixed frame
30b Operation side fixed frame
30c stay
31a-31b Surface plate
32 printing surface plate
34a-34n applicator
35 Movable frame
35a Drive-side movable frame
35b Operation side movable frame
36a, 36b Guide rail
37 Slider
38 Rotating bearing
39 Eccentric bearing
40a, 40b pinion
41a, 41b rack
42 Mobile drive device
50 Resin coated substrate manufacturing equipment
100 Resin coated substrate manufacturing equipment
110a-110c CF (color filter)
130 Fixed frame
130a Drive side fixed frame
130b Operation side fixed frame
130c stay
151a, 151b horizontal plane
152a, 152b Vertical plane
153 Fixing bolt
154 wedge-shaped fixing plate
155 Fixing bolt

Claims (7)

In a resin-coated substrate in which a plurality of types of resins are applied to a substrate by letterpress reverse printing with regularity in arrangement, each single layer of the applied resin is formed uniformly and flatly. Resin coated substrate. 2. The resin-coated substrate according to claim 1, wherein the thickness of the single layer of the applied resin is set for each of the various types. 3. The resin-coated substrate according to claim 1 or 2, wherein one of the two adjacent coated resins is necessarily a light-shielding resin. The resin-coated substrate according to any one of claims 1 to 3, wherein all of the plurality of types of resins are sequentially applied without any intermediate drying process. . 5. The resin-coated substrate according to claim 1, wherein a resin adjacent to the resin-coated substrate is applied by tweezers. A resin-coated substrate manufacturing apparatus for manufacturing a resin-coated substrate according to any one of claims 1 to 5, wherein a plurality of transfer cylinders having a surface having resin repellency are provided, and a resin is supplied to the surface of the transfer cylinder. Resin application means for forming a resin application surface, resin removal means for removing a predetermined portion of resin from the resin application surface, and resin transfer means for transferring the resin remaining on the surface of the transfer cylinder to the substrate A fixed frame for installing the substrate, a movable frame for installing the resin transfer means, and a moving means for moving the movable frame relative to the fixed frame, the moving means being the fixed frame A pair of parallel guide rails mounted on the frame and supporting the movable frame, and a moving drive means, and the fixed frame is polished after the fixed frame is integrally fixed, A plurality of horizontal plane pressing means for pressing the guide rail against the horizontal plane, and a plurality of vertical planes pressing the guide rail against the vertical plane. A resin-coated substrate manufacturing apparatus comprising a pressing means. 7. The resin coated substrate manufacturing apparatus according to claim 6, wherein the moving means is provided coaxially on both ends of the transfer cylinder and a pair of racks installed in parallel with the pair of guide rails on the fixed frame. An apparatus for manufacturing a resin-coated substrate, comprising: a pair of pinions that respectively mesh with a pair of racks.

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