KR101350660B1 - Blanket roller for roll printing and manufacturing method thereof - Google Patents

Abstract

A blanket roller for roll printing which can prevent a print pattern defect is disclosed.

The blanket roller for roll printing according to the present invention is formed around a roller frame portion and the roller frame portion, and a pattern to be transferred onto a substrate is formed on a surface of the blanket and a printing pattern formed on the surface of the blanket. It is characterized in that it comprises a swelling measurement pattern to measure the degree of swelling (swelling) of the blanket into the material.

Blankets, Roll Printing, Swelling, Printed Patterns

Description

Blanket roller for roll printing and manufacturing method thereof

1 shows a blanket roller for a rollprint according to the present invention.

FIG. 2 is a cross-sectional view of the blanket roller for roll printing of FIG. 1. FIG.

3a and 3b show a process for producing a blanket according to the invention.

4A is a diagram showing the form of the second scale, and FIG. 4B is a diagram showing another form of the second scale.

5A to 5C are views illustrating a process of forming a printing pattern on a substrate using the blanket roller of FIG. 1.

BRIEF DESCRIPTION OF THE DRAWINGS FIG.

100: blanket roller 101: substrate

110: Blanket 115: Frame

120: roller frame 125: printing plate

125a, 150a: Convex 125b, 150b: Concave

130: tightening adjustment unit 140: reference pattern

150: swelling measurement pattern 160: mold

165: recess 170: heating device

180: ink 185: ink pattern

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blanket roller for roll printing, and more particularly, to a blanket roller for roll printing and a method of manufacturing the same, which can prevent defective printing patterns.

Recently, as the information society has changed rapidly, the necessity of a flat panel display having excellent characteristics such as thinness, light weight, and low power consumption has emerged. Among them, liquid crystal display devices having excellent color reproducibility, etc. are actively active. Is being developed. As is known, a liquid crystal display is formed by arranging two substrates each having electrodes formed on one side thereof so that the surface on which the two electrodes are formed face each other and forming a liquid crystal layer between the two substrates. In addition, the liquid crystal display device is an apparatus for displaying an image by the transmittance of light that varies according to the displacement of the liquid crystal molecules of the liquid crystal layer by an electric field generated by applying a voltage to the two electrodes.

The lower substrate of the liquid crystal display is a thin film transistor substrate including a thin film transistor for applying a signal to a pixel electrode, and is formed by repeating the process of forming and etching a metal film and an insulating film. In addition, the upper substrate of the liquid crystal display device is a color filter substrate including a color filter, in which three colors of red (R), green (G), and blue (B) are sequentially arranged.

A general liquid crystal display device includes a thin film transistor substrate on which a TFT array is formed, a color filter substrate on which color filters are arranged, a liquid crystal layer formed between the thin film transistor substrate and the color filter substrate, and a backlight unit for supplying light for image display. It is configured to include. The TFT array formed on the thin film transistor substrate serves to transmit and control an electrical signal, and the liquid crystal layer controls a degree of light transmission by changing molecular arrangement according to an applied voltage. Light controlled through the above process passes through the color filter substrate and is displayed in a desired color and image.

In the process of manufacturing the liquid crystal display device, in forming the thin film transistor substrate and the color filter substrate, the thin film transistor substrate and the color filter substrate are formed by stacking a plurality of layers, each layer having a predetermined shape. It is patterned and formed. In this case, in order to form each layer in a predetermined shape, a resist layer is formed on the target layer in a predetermined shape, and the target layer can be patterned into a predetermined shape by performing etching in a state where the resist layer is formed. Here, a photoresist or a printing resist may be used as a material for forming the resist layer. In this case, the resist layer is formed by roll printing.

The roll printing is a method in which film formation and patterning are simultaneously performed by pattern-coating a material for forming a film on a substrate on a surface of the printing roll and then rotating the printing roll at a predetermined pressure and speed on the printing substrate. In addition, roll printing imparts positive (+) or negative (-) characteristics to the printing material and gives the opposite polarity to the surface to be printed in order to improve the adhesion of the printing material and the accuracy of pattern formation. It is possible to transfer the printing material by.

As an example, a method of forming a color filter on the color filter substrate using the roll printing is as follows. First, ink corresponding to red (R), green (G) and blue (B) is applied onto the ink roller. Exactly, the ink is applied to a blanket of the ink roller. The ink applied to the ink roller is then patterned by the pattern of the printing plate while the ink roller is rotated on the printing plate having a predetermined pattern corresponding to each color. By rotating the ink roller to which the patterned ink is applied at a constant speed and pressure on the color filter substrate, the ink pattern formed on the ink roller is transferred to the color filter substrate, thereby red (R), green (G), and blue color. (B) A color filter is formed on the color filter substrate.

On the other hand, as described above in the roll printing, the ink is applied to the ink roller, respectively. The greater the number of times the ink is applied to the ink roller, the more the solvent, one of the constituents of the ink, is infiltrated into the blanket of the ink roller. When the solvent is infiltrated into the blanket, the blanket swells. At this time, the roll printing is continued without grasping the degree of swelling of the blanket.

When the roll printing is performed while the blanket is swelled for about several tens of micrometers or more, the finally printed patterns are misaligned, resulting in pixel defects. In other words, when the blanket is swelled, the printing pattern of the roll printing using the blanket may be larger or smaller than the desired printing pattern. Due to the printed pattern different from the desired printing pattern, the pixels may be finally misaligned and may cause pixel defects.

It is an object of the present invention to provide a blanket roller for roll printing and a method of manufacturing the same, which can prevent a print pattern defect.

It is an object of the present invention to provide a blanket roller for roll printing and a method of manufacturing the same which can improve reliability.

Roll blanket blanket roller according to the present invention for achieving the above object is formed on the surface of the blanket and the blanket formed on the surface of the roller frame portion, and the printing pattern to be transferred to the substrate is formed on the surface of the roller frame portion and It characterized in that it comprises a swelling measurement pattern for measuring the degree of swelling (swelling) of the blanket soaked into the material of the printed pattern formed on the substrate.

According to an aspect of the present invention, there is provided a method for manufacturing a blanket roller for printing a roll on a roller frame portion including a printing roll made of metal, a cushion layer surrounding the printing roll, and a support layer surrounding the cushion layer. Forming a reference pattern, a blanket including a swell measurement pattern formed around the roller frame portion and measuring a print pattern to be transferred onto a substrate and a degree of swelling of the material of the print pattern. Forming and surrounding the roller frame portion with the blanket so that the reference pattern of the roller frame portion and the swelling measurement pattern of the blanket are in the same position with each other.

Hereinafter, embodiments according to the present invention will be described with reference to the accompanying drawings.

1 is a view showing a blanket roller for roll printing according to the present invention.

As shown in FIG. 1, the blanket roller 100 for a rollprint according to the present invention includes a roller frame 120 made of a metal material and a blanket 110 made of a transparent material surrounding the roller frame 120. have. More specifically, the roll roller blanket roller 100 may include a roller frame 120 made of a metal material, a cushion layer 110a surrounding the surface of the roller frame 120, and a surface of the cushion layer 110a. A blanket 110 includes a support layer 110b and a silicon rubber layer 110c surrounding the support layer 110b. The roller frame 120 is provided with a bent portion (A) of a predetermined shape and the pinch adjusting portion 130 located between the bent portion (A).

When one side of the blanket (110) and the other side opposite to the one side is fitted to the bent portion A of the roller frame 120, the pinch adjusting unit 130 is adjusted to adjust the blanket. , 110 is closely attached to the surface of the roller frame 120. The bent portion A of the roller frame 120 may be modified in various forms.

A reference pattern 140 is formed on the roller frame 120, and a swelling measurement pattern 150 is formed on the blanket 110. The reference pattern 140 formed on the roller frame 120 and the swelling measurement pattern 150 formed on the blanket 110 are positioned to correspond to each other, as shown in FIG. 2. When the blanket 110 is fitted into the bent portion A of the roller frame 120, the reference pattern 140 of the roller frame 120 and the swelling measurement pattern 150 on the blanket 110. The pinch adjusting unit 130 is adjusted to correspond to each other at the same position.

The reference pattern 140 is formed on the roller frame 120 using a screen printing method.

Conventional screen printing methods include silk, nylon, and Tedron fibers, stainless steel or glass, which are fixed in a frame, and then manually or photochemically formed to create a valve to block necks other than those necessary. Pour the print ink into the frame and press the inside surface of the screen with a tool called squeegee to move the ink. The ink passes through the non-valve area and is printed on the paper or glass printed under the plate. This screen printing method can be printed not only on flat objects, but also on the sides of cylinders and cones, such as bottles and cups, and not only on flexible materials such as paper and cloth, but also on the surface of hard boards and moldings, including glass, metal and rigid plastics Direct adhesive printing is also possible, and since the printing pressure is small, there is an advantage that printing is also possible on a material such as glass that is fragile. As described above using the screen printing method as described above, the reference pattern 140 is formed on the roller frame 120. In addition, the reference pattern 140 may be formed on any one of the cushion layer 110a and the support layer 110b by screen printing.

A detailed description of the method of forming the swelling measurement pattern 150 on the blanket 110 is as follows.

Figures 3a and 3b is a view showing a process for producing a blanket according to the present invention.

First, as shown in FIG. 3A, a mold 160 having a recess 165 having a predetermined shape is prepared, and a mold 115 having convex portions and recesses on one side of the recess 165 is provided. Settle down. Subsequently, as shown in FIG. 3B, the recess 165 of the mold 160 is filled with the resin material 110a for the blanket in the liquid state, and then pressurized by the pressurizing device 170 and not shown. Heated through to prepare a blanket 110 in solid state with the swelling measurement pattern (150 in FIG. 2).

In another manufacturing method, the concave portion 165 of the mold 160 is filled with the blanket resin material 110a, and then the convex portion and the concave portion are provided on one side of the blanket resin material 110a. When the mold 115 is mounted to press the resin material 110a for the blanket and the mold 115 to the pressurizing device 1170 and heat through the heating device, and then the mold 115 is removed. 115), a blanket 110 having a swelling measurement pattern (150 in FIG. 2) can be produced.

As shown in FIG. 4A, the swelling measurement pattern 150 formed on one side of the blanket 110 has a convex portion 150a and the blanket which rise above the surface of the blanket 110. , 110 may be formed in an embossed shape having a recess 150b parallel to the surface. The distance P between the convex portions 150a positioned at both edges of the convex portions 150a of the swelling measurement pattern 150 is about 1 cm, and the interval between the convex portions 150a is about 10 μm. . Since the swelling measurement pattern 150 formed on the blanket 110 and the reference pattern 140 formed on the roller frame 120 of FIG. 1 correspond to each other, this value is based on the reference of the roller frame 120 of FIG. 1. The same applies to the pattern 140.

In addition, as shown in FIG. 4B, the swelling measurement pattern 150 formed on one side of the blanket 110 may include a recess 150b and an inner portion of the blanket 110 that are inward from the surface of the blanket 110. It may be formed in an intaglio form having a convex portion 150a parallel to the surface of the (blanket, 110). The distance P between the recesses 150b located at both edges of the recesses 150b of the swelling measurement pattern 150 is about 1 cm, and the interval between the recesses 150b is about 10 μm. . Since the swelling measurement pattern 150 formed on the blanket 110 and the reference pattern 140 formed on the roller frame 120 of FIG. 1 correspond to each other, this value is based on the reference of the roller frame 120 of FIG. 1. The same applies to the pattern 140.

The swelling measurement pattern 150 may be a portion of the blanket roller 100 including the blanket 110 (100 of FIG. 1) that does not affect forming an ink pattern on a substrate during roll printing. The blanket 110 may be formed on both sides of the blanket 110.

In order for the swelling measurement pattern 150 formed on the blanket 110 to adhere to the surface of the roller frame 120 shown in FIG. 1, the surface on which the swelling measurement pattern 150 is formed is inward. To the bent portion (A) of the roller frame (120 in FIG. 1). In addition, in order for the swelling measurement pattern 150 formed on the blanket 110 to face outwardly of the roller frame 120 (see FIG. 1), the surface on which the swelling measurement pattern 150 is formed is turned outward. It fits in the bending part A of the roller frame (120 of FIG. 1). The blanket 110 is made of a transparent material.

The swelling measurement pattern 150 is a surface of the roller frame (120 in FIG. 1) because the outer portion of the blanket 110 may be worn while the roll printing is performed, and the swelling measurement pattern 150 may be damaged. It is preferably attached with.

Roll using the blanket roller 100 set so that the reference pattern 140 formed on the roller frame 120 of FIG. 1 and the swelling measurement pattern 150 formed on the blanket 110 correspond to the same position. When performing printing, as the number of times the ink is applied to the blanket roller 100 increases, the blanket 110 of the blanket roller 100 swells. In this case, the reason why the blanket 110 of the blanket roller 100 swells is because solvent, which is one of the constituents of the ink, is infiltrated as described above.

When the blanket 110 swells, the convex portion 150a (in the case of an embossed shape) or the concave portion 150b of the swell measurement pattern 150 formed on the blanket 110 may be intaglio. In the case of), the interval between them is increased. When the distance between the convex portion 150a (in the case of embossed form) or the concave portion 150b (in the case of engraved form) of the swelling measurement pattern 150 formed on the blanket 110 is increased, the roller frame (see FIG. It does not coincide with the reference pattern 140 formed on the 120.

Whether the reference pattern 140 formed on the roller frame 120 and the swelling measurement pattern 150 formed on the blanket 110 is matched is confirmed because the blanket 110 is made of a transparent material. This is possible.

The printing pressure applied to the blanket roller 100 when the swelling measurement pattern 150 formed on the blanket 110 and the reference pattern 140 formed on the roller frame 120 of FIG. 1 do not match. Decreases. In addition, when the degree of inconsistency between the swelling measurement pattern 150 formed on the blanket 110 and the reference pattern 140 formed on the roller frame 120 (FIG. 1) is severe, roll printing is stopped. The ink penetrating into the blanket 110 is removed by either nitrogen pumping or vacuum dry.

As such, reference patterns and swelling measurement patterns 140 and 150 corresponding to each other are formed on the roller frame 120 and the blanket 110 of the blanket roller 100, respectively, so that the reference pattern 140 and the swelling are formed. The degree of swelling of the blanket 110 may be easily determined depending on whether the measurement patterns 150 match. This prevents misalignment of printed patterns on a substrate by using roll printing, thereby improving product reliability.

5A to 5C are views illustrating a process of forming a printing pattern on a substrate by using the blanket roller of FIG. 1.

First, as shown in FIG. 5A, the ink 180 is coated with a predetermined thickness on the blanket 110 of the blanket roller 100. Then, the blanket roller 100 coated with the ink 180 is rotated on the printing plate 125 including the plurality of convex portions 125a and the concave portion 125b shown in FIG. The ink 180 applied to the surface is transferred to the printing plate 125.

In this case, the ink 180 coated on the surface of the blanket 110 is transferred to the convex portion 125a on the printing plate 125, and the ink 180 is formed on the concave portion 125b on the printing plate 125. Is not transferred. Specifically, in the process in which the blanket roller 100 coated with the ink 180 is rotated on the printing plate 125, a part of the blanket roller 100 corresponding to the recess 125b of the printing plate 125 is formed. Since the ink 180 remains intact, the ink 180 is not transferred to the recess 125b of the printing plate 125.

As a result, an ink pattern 185 is formed in the blanket roller 180 at a portion corresponding to the recess 125b of the printing plate 125. When the blanket roller 180 on which the ink pattern 185 is formed is rotated at a constant speed and pressure on a substrate 101 to be printed, as shown in FIG. 5C, the ink pattern 185 is formed on the substrate 101. Is transferred onto Such roll printing can be used to form red, green and blue color filters and black matrices on a substrate.

As described above, in the roll printing using the blanket roller 100 according to the present invention, the reference pattern (140 in FIG. 2) and the swelling measurement pattern (corresponding to each other that correspond to the roller frame 120 and the blanket 110) ( By forming each of 150 of FIG. 2, the swelling of the blanket 110 due to the solvent component of the ink according to the degree of agreement between the reference pattern 140 and the swelling measurement pattern 150 ( The degree of swelling can be easily determined. This prevents misalignment of printed patterns on a substrate by using roll printing, thereby improving product reliability.

As described above, in the roll printing using the blanket according to the present invention, a reference pattern is formed on a roller frame, and a swelling measurement pattern is formed on a blanket to determine whether the blanket is in accordance with the reference pattern and the swelling measurement pattern. The degree of swelling of the blanket can be easily determined.

This can prevent printed patterns from being misaligned on the substrate, thereby improving product reliability.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the following claims. .

Claims (9)

A roller frame portion; A blanket formed around the roller frame part and having a printing pattern formed on a surface thereof to be transferred onto a substrate; And And a swelling measurement pattern positioned on the blanket surface and measuring a swelling degree of the blanket by infiltrating a material of a printing pattern formed on the substrate. The roller frame is a blanket roller for a roll print, characterized in that it comprises a bent portion that one side and the other side of the blanket is fitted, and the pinch adjusting portion located between the bent portion. The method according to claim 1, And a reference pattern formed as a reference for measuring a degree of swelling of the blanket in the roller frame part and corresponding to the swelling measurement pattern. 3. The method of claim 2, The blanket roller for roll printing further comprises at least one of a printing roll made of metal, a cushion layer surrounding the printing roll, and a support layer surrounding the cushion layer, between the roller frame portion and the blanket. The method of claim 3, The blanket roller for roll printing, wherein the reference pattern is formed on at least one of the printing roll, the cushion layer surrounding the printing roll, and the support layer surrounding the cushion layer. The method according to claim 1, The blanket is a roll roller for the roller, characterized in that formed of a silicone rubber material and formed of a transparent material. 3. The method of claim 2, The blanket roller for roll printing, wherein the reference pattern is formed by screen printing. The method according to claim 1, And the swelling measurement pattern includes any one of an embossed or engraved form. Forming a reference pattern on a roller frame portion including a printing roll of metal material, a cushion layer surrounding the printing roll, and a support layer surrounding the cushion layer; Forming a blanket formed around the roller frame portion and including a print pattern to be transferred onto a substrate and a swelling measurement pattern for measuring a degree of swelling of a material of the print pattern; And And surrounding the roller frame portion with the blanket so that the reference pattern of the roller frame portion and the swelling measurement pattern of the blanket are in the same position with each other. The roller frame is a manufacturing method of a blanket roller for a roll print, characterized in that it comprises a bent portion in which one side and the other side of the blanket is fitted, and the pinch adjusting portion located between the bent portion. 9. The method of claim 8, And the reference pattern is formed on at least one of a printing roll of the roller frame part, a cushion layer surrounding the printing roll, and a support layer surrounding the cushion layer.

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