KR100851823B1 - Printer - Google Patents

Abstract

A printer is provided to print RGB patterns integrally at once onto the surface of a substrate in an in-line type, thereby reducing foot print and tact time. Plural unit print units(100~300) are sequentially disposed as being spaced from each other along an in-line print work line. In an upper surface of a share stage(50), a substrate(G) is supported. The share stage is prepared so as to pass through all of the plural unit print units along the print work line. In each of the plural unit print units, blanket rolls(140,240,340) are prepared. The blanket rolls individually print RGB(Red, Green and Blue) patterns one by one onto the surface of the substrate moved by the share stage.

Description

Print Device {Printer}

1A and 1B are diagrams showing two types of structures of color filter layers printed with R, G, and B patterns, respectively.

2 is a schematic configuration diagram of a printing apparatus according to an embodiment of the present invention.

FIG. 3 is a schematic perspective view of the first unit printing unit in the printing apparatus shown in FIG. 2.

4 is a schematic side view of FIG. 3.

FIG. 5 is a structural diagram of the first frame unit illustrated in FIG. 3.

* Explanation of symbols for the main parts of the drawings

10: device body 50: shared stage

60: press roll 100 ~ 300: unit printing unit

110: first gravure roll 120: first doctor blade

130: first dispenser 140: first blanket roll

142: first pressure control blanket roll drive unit 146: first pressure control stopper unit

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printing apparatus, and more particularly, an in-line type to collectively print all R (Red), G (Green), and B (Blue) patterns on a surface of a substrate at one time. The present invention relates to a printing apparatus capable of reducing the foot print of the apparatus and reducing the tact time.

Recently, as the electronic display industry has developed rapidly among the semiconductor industry, flat panel displays (FPDs) have started to appear. Flat panel displays are commonly used as monitors for TVs or computers, or as display devices for devices such as mobile phones, PDAs, and digital cameras. Types of flat panel displays include liquid crystal displays (LCDs), plasma display panels (PDPs), and organic light emitting diodes (OLEDs).

A flat panel display typically has a color filter layer for realizing color. A color filter having a black matrix for preventing light from leaking to areas other than the image display area and degrading the image quality of the display device is formed. It is provided.

A typical flat panel display having such a color filter is the LCD described above. The LCD includes a thin film transistor substrate on which a thin film transistor is formed, a color filter substrate on which a color filter layer is formed, and a liquid crystal filled between these substrates.

In the color filter layer, as shown in Figs. 1A and 1B showing two types of color filter layers in which R, G, and B patterns are printed, respectively, R (Red), G (Green), and B (Blue) are typically used. A pixel having a pigment of the pattern is formed. Each pixel may consist of sub-pixels having R, G, and B, but in general, each pixel has one pigment.

In forming the color filter layer, as shown in FIG. 1A, the R, G, and B patterns may be regularly arranged in a line such that the R, G, and B patterns are arranged in the same column, respectively, or as shown in FIG. 1B. Similarly, R, G, and B patterns may be repeatedly arranged in the same row. The difference in resolution can be realized in various ways according to the arrangement of the R, G, and B patterns.

Such a color filter layer can be produced by various methods, for example, dyeing, printing, electrodeposition, pigment dispersion. STN (Super Twisted Nematic) LCD, which is one of the conventional passive matrix methods, mainly produces color filter layers by dyeing, printing, and adhesive methods, but it is an active matrix method that has excellent elaboration, good reproducibility, and is applicable to large-area liquid crystals. In TFT (Thin Film Transistor) LCD, pigment dispersion method is mainly used.

In the pigment dispersion method, a color filter layer is produced by forming a pattern of photosensitive color resist by a general photo process. That is, the color filter layer is completed by applying a photosensitive color resist on a substrate, irradiating light using a mask, and then applying a developer to form a desired pattern.

As such, a photo process is required to form a color filter by the pigment dispersion method, and this photo process causes a problem that the process is not only complicated but also expensive to manufacture. Furthermore, the process is further complicated because the photo process must be repeated three times in order to form pixels corresponding to the dyes of the R, G, and B patterns.

Recently, a method of using the printing method in the TFT LCD field has been proposed to overcome the problems of the pigment dispersion method.

The printing method includes a gravure filled gravure and a corresponding roll to form a color resist pattern of the dye on the substrate by the action of a roll, and then another color color resist by another roll. To form sequentially.

If such a printing method can be put into practical use, the process of manufacturing color filter layers by printing R, G, and B patterns on a substrate can be performed more quickly and effectively. It is not.

Therefore, research and development on such a device is actively in progress. As part of such research and development, the present applicant has previously filed a printing apparatus having various functions for forming R, G, and B patterns on a substrate using a printing method.

On the other hand, in the printing apparatus known or under study, only one pattern selected from the R, G, and B patterns can be printed on the surface of the substrate using one printing apparatus.

Therefore, as shown in Figure 1a and Figure 1b, if you want to print all of the R, G, B pattern on the surface of the substrate, a total of three printing apparatus is provided, and the print job for the R, G, B pattern respectively I had to proceed individually.

As described above, according to the related art, since at least three printing apparatuses must be provided to print all R, G, and B patterns on the surface of the substrate, the foot print of the apparatus is inevitably increased. In addition, there is a problem that the tact time is inevitably increased because the separate transfer device must repeat the operation such as aligning again after transferring the substrate to each independent printing device.

An object of the present invention is an in-line type, which can print all the R (Red), G (Green), and B (Blue) patterns on the surface of the substrate at once, so that the foot print of the device It is to provide a printing apparatus that can reduce the t) and the tact time.

The object is, according to the present invention, a plurality of unit printing units are sequentially arranged spaced apart from each other along the in-line (printed) work line; And a shared stage on which the substrate is supported by an upper surface and provided to pass all of the plurality of unit printing units along the printing work line, wherein each of the plurality of unit printing units is moved by the sharing stage. A blanket roll for printing the R (Red), G (Green), and B (Blue) patterns individually one by one is provided on the surface of the substrate.

Here, the plurality of unit printing units may be three first to third unit printing units provided to be spaced apart from each other along the print job line, wherein each of the first to third unit printing units, the surface of the substrate And a first to third blanket rolls for printing at least one of the R (Red), G (Green), and B (Blue) patterns, wherein each of the first to third unit printing units The first to third blanket rolls can individually print R, G, and B patterns onto the surface of the substrate.

The first to third unit printing units are respectively disposed above the first to third blanket rolls, and an outer surface thereof is selectively contacted with the outer surfaces of the first to third blanket rolls, respectively, so that R (Red), The method may further include first to third gravure rolls for transferring G and blue color resists to the first to third blanket rolls corresponding to one another.

The first unit printing unit may further include at least one shared vision unit configured to sense an alignment position with respect to the substrate supported by the sharing stage.

The third unit printing unit presses a substrate on which at least one of the R, G, and B patterns is printed in order to adjust a height of at least one of the R, G, and B patterns printed on the substrate. It may further include a shared press roll.

The third unit printing unit may further include a pressure-controlling press roll driving unit coupled to the shared press roll and lowering the shared press roll so that the shared press roll is approached and spaced apart from the shared stage.

The apparatus may further include an apparatus body for supporting the plurality of unit printing units and the sharing stage, and a cloud movement wheel and a foot member may be provided at a lower end of the apparatus body.

First to third pressure regulating devices which are respectively coupled to the first to third blanket rolls and lower the first to third blanket rolls so that the first to third blanket rolls approach and are spaced apart from the substrate, respectively. The blanket roll driving unit may further include.

Each of the first to third pressure regulating blanket roll driving units may include: first to third lifting blocks coupled to both sides of the first to third blanket rolls to move up and down together with the first to third blanket rolls; And first to third actuators coupled to the first to third lifting blocks, respectively, to lift the first to third lifting blocks.

Each of the first to third blanket rolls may further include first to third frame parts provided on both sides of the first to third blanket rolls to support the first to third blanket rolls. First to third sliding guides for guiding the sliding movement of the third lifting block may be further provided.

It is provided in the lower region of the first to third blanket roll, respectively, in the lowering position of the first to third blanket roll to adjust the pressure of the first to third blanket roll to the substrate during the printing operation It may further include a first to third pressure control stopper unit for restricting sexually.

The first to third pressure regulating stopper units may be provided one each on both sides of the lower region of the first to third blanket rolls along the length direction of the first to third blanket rolls. The blanket roll may be provided with first to third contact pressurization parts contacted and pressed against the first to third pressure control stopper units.

The first to third pressure adjusting stopper unit may be an air bearing.

A plurality of air holes may be formed in the plate surface of the sharing stage to adsorb the substrate to the plate surface of the sharing stage or to separate the substrate from the plate surface of the sharing stage.

The lower portion of the sharing stage may be provided with a moving rail unit for moving the sharing stage in the longitudinal direction of the blanket roll in the horizontal direction.

The moving rail unit, the rail body portion; And a rail unit coupled to the shared stage and engaged with the rail body part in a dove tail structure.

The shared stage is movable in the X-axis, Y-axis, and θ-axis with respect to the plate surface of the substrate by the moving rail unit.

In order to fully understand the present invention, the operational advantages of the present invention, and the objects achieved by the practice of the present invention, reference should be made to the accompanying drawings which illustrate preferred embodiments of the present invention and the contents described in the accompanying drawings.

Hereinafter, the present invention will be described in detail by explaining preferred embodiments of the present invention with reference to the accompanying drawings. Like reference numerals in the drawings denote like elements.

For reference, the substrate to be described below refers to a flat panel display (FPD) substrate including a liquid crystal display (LCD), a plasma display panel (PDP), organic light emitting diodes (OLED), etc. For the sake of brevity, these substrates are not classified. In the area, the substrate to be described below refers to a so-called 3rd and 4th generation small substrate having a length and width of several tens of centimeters.

2 is a schematic configuration diagram of a printing apparatus according to an embodiment of the present invention, FIG. 3 is a schematic perspective view of a first unit printing unit in the printing apparatus shown in FIG. 2, and FIG. 4 is a schematic view of FIG. 3. 5 is a side view of the structure, and FIG. 5 is a structure diagram of the first frame part shown in FIG. 3.

Referring to these drawings, but mainly referring to FIG. 2, a printing apparatus according to an embodiment of the present invention is provided on the surface of the substrate G in an in-line type, for example, as shown in FIGS. 1A and 1B. As a device capable of printing all of the R (Red), G (Green), and B (Blue) patterns at once, one device is formed, as shown in FIG. This reduces the foot print of the device and reduces the tact time.

The printing apparatus includes a device main body 10 forming one body and a first spaced sequentially spaced apart from each other along an in-line printing work line provided on an upper surface of the device main body 10. The third stage unit printing unit (100,200,300), the substrate (G) is supported on the upper surface, the shared stage 50 is provided to pass through all of the first to third unit printing units (100, 200, 300) along the print job line, Vision roll 70 provided for the alignment of the substrate (G), and a press roll for finally pressing the substrate (G) in order to adjust the height of the R, G, B pattern printed on the substrate (G) 60).

The first, second, and third unit printing units 100, 200, and 300 are portions in which a printing operation is substantially performed on the substrate G together with the sharing stage 50. Therefore, various structures such as first to third gravure rolls 110 to 310, including first to third blanket rolls 140 to 340 (blanket roll) and first to third gravure rolls, are included in the first to third unit printing units 100, 200 and 300. Although equipped, the first to third unit printing unit (100, 200, 300) will be described in detail later.

The sharing stage 50 is described further with reference to FIG. 2. The shared stage 50 of this embodiment is a portion where the substrate G is supported by its upper surface. The first to third blanket rolls 140 to 340 moving to a print job position in which the first to third blanket rolls 140 to 340 provided in each of the first to third unit printing units 100, 200, and 300 are mounted. It interacts with and serves to proceed with the printing operation on the substrate (G).

As mentioned earlier, in the case of the printing apparatus for the small substrate G as in the present embodiment, it is not necessary to substantially mount many structures on the shared stage 50. Therefore, using the shared stage 50 in the print job is much more effective in reducing the tact time.

The work stage (not shown) employed in the printing apparatus of a large substrate was mainly applied as a stone tablet. However, in the present embodiment, the sharing stage 50 is made of a metal material. In the case of a metal material, there is an advantage that the sharing stage 50 can be more easily manufactured.

A plurality of air holes 51 are formed in the plate surface of the sharing stage 50 to adsorb the substrate G to the plate surface of the sharing stage 50 or to separate the substrate G from the plate surface of the sharing stage 50. have. Instead of the plurality of air holes 51, a tiled air line (not shown) may be formed. Air is injected through the plurality of air holes 51 or air is sucked away, so that the separation and adsorption of the substrate G is allowed depending on the situation.

Meanwhile, in order to move the sharing stage 50, the lower stage of the sharing stage 50 moves the sharing stage 50 along the horizontal direction in the longitudinal direction of the first to third blanket rolls 140 to 340. The rail unit 52 is further provided.

The moving rail unit 52 forms a movement of the work stage 50 by engaging the rail portion 52b having the shared stage 50 coupled to the rail body portion 52a in a dove tail structure. The moving rail portion 52 is continuously formed from the front of the blanket roll 40 to the rear of the press roll 60. The moving rail unit 52 may be applied in a linear motion or the like.

Although not shown in detail, the shared stage 50 is movable in the X-axis, Y-axis, and θ-axis with respect to the plate surface of the substrate G by the moving rail unit 52. Of course, in order to enable such an operation, the moving rail unit 52 should be provided with a combination of a structure that enables movement in the X-axis, Y-axis, and θ-axis, such as a motor and a ball screw. The description will be cited and will be omitted here.

Meanwhile, when the substrate G is loaded onto the upper surface of the shared stage 50, the substrate G is aligned and loaded in advance. However, even if the substrate G is previously aligned and supported on the upper surface of the sharing stage 50, it is necessary to finally align the substrate G with respect to the first to third blanket rolls 140 to 340. have.

In order to align the substrate G with respect to the first to third blanket rolls 140 to 340, the printing unit includes a vision unit 70. Alignment operation of the substrate G with respect to the first to third blanket rolls 140 to 340 by the vision unit 70 is performed by an alignment mark in which the vision unit 70 is marked on the substrate G. After acquiring the video information of), the control unit (not shown) is performed by operating the mobile rail unit 52. Of course, since the moving range of the shared stage 50 with respect to the plate surface of the substrate G is about several millimeters, it is not substantially difficult to manufacture the moving rail unit 52.

Therefore, at least one vision unit 70 for acquiring image information of an alignment mark marked on the substrate G may be provided at a certain position. However, in the present embodiment, since the sharing stage 50 is applied, the vision unit 70 is also applied to the shared vision unit 70 provided in the first unit printing unit 100.

Therefore, before the substrate G supported by the sharing stage 50 enters the first unit printing unit 100, alignment of the substrate G by the shared vision unit 70 and the moving rail unit 52 is performed. After this progresses, since the shared stage 50 is moved to the third unit printing unit 300 continuously in this state, the time required for frequently aligning the substrate G unnecessarily as in the conventional art can be reduced. have.

As a result, as shown in FIG. 2, the substrate G, which is aligned with the shared vision unit 70 and the moving rail unit 52 after being supported on the upper surface of the sharing stage 50, is shared. By sequentially passing through the first to third unit printing units 100, 200, and 300 along the stage 50, a printing pattern as illustrated in FIG. 1A may be formed on the surface of the substrate G.

As shown in FIG. 2, one press roll 60, that is, a shared press roll 60, is provided at the rear of the printing work line. This press roll 60 is provided to adjust the height of the R, G, B pattern printed on the substrate (G). That is, when the R, G, and B patterns are printed on the surface of the substrate G by the first to third blanket rolls 140 to 340, the heights of the patterns may not all be uniform.

Therefore, after R, G, and B patterns are printed on the surface of the substrate G by the first to third blanket rolls 140 to 340, the press roll 60 is used to press the substrate G once more. By doing so, the heights of the printing patterns printed on the surface of the substrate G can be mutually uniform, thus improving the print quality.

As such, the press roll 60 serves to pressurize the surface of the substrate G on which the printing pattern is formed in order to improve the print quality, and thus, the press roll 60 is more effective if the press roll 60 is provided. However, since the scope of the present invention is not limited thereto, the press roll 60 does not necessarily need to be provided in the present printing apparatus.

In order for the press roll 60 to finally pressurize the surface of the substrate G, the pressure of the press roll 60 against the substrate G must be properly maintained. Therefore, the press roll 60 is equipped with a means for adjusting the pressure.

Means for adjusting the pressure provided with the press roll 60 is substantially the same as the configuration of the first blanket roll drive unit 142 (see FIG. 5), which will be described later in detail. Therefore, the means for pressure regulation equipped with the press roll 60 will be omitted.

On the other hand, in the form of the pattern formed on the substrate (G) by the above configuration, although the printing pattern as shown in Figure 1b may be formed, it will be described in the following description that the print pattern as shown in Figure 1a is formed through this apparatus Shall be.

A process of forming the print pattern as shown in FIG. 1A through the print job of FIG. 2 will be briefly described. When the substrate G passes through the first unit printing unit 100 by the sharing stage 50, the surface of the substrate G is formed on the surface of the substrate G by the first blanket roll 140 provided in the first unit printing unit 100. As shown in FIG. 2A, an R (Red) pattern is formed. Subsequently, when the substrate G passes through the second unit printing unit 200 by the sharing stage 50, the substrate G is formed by the second blanket roll 240 provided in the second unit printing unit 200. The surface of the G (Green) pattern is further formed as shown in FIG. Then, when the substrate G passes through the third unit printing unit 300 by the sharing stage 50, the substrate G is formed by the third blanket roll 340 provided in the third unit printing unit 300. The B (Blue) pattern is further formed on the surface of the substrate as shown in FIG. Finally, the printing is completed as shown in FIG. 1A while passing through the shared press roll 60.

As described above, the substrate G supported on the upper surface of the sharing stage 50 sequentially passes through the first to third unit printing units 100, 200, and 300 along the sharing stage 50, thereby R, G, All of the B patterns can be printed at once.

Next, a configuration of the first to third unit printing units 100, 200, and 300 will be described in detail below.

Here, except for the configuration and the location of the shared vision unit 70 and the shared press roll 60, the configuration provided in the first to third unit printing units (100, 200, 300) is substantially the same. Therefore, in the following description, only the components provided in the first unit printing unit 100 will be described in detail, and the components provided in the remaining second and third unit printing units 200 will be applied to the components provided in the first unit printing unit 100. The same reference numerals will be briefly given to the drawings and description thereof will be omitted.

3 to 5, the first unit printing unit 100, the R (Red) color resist (color ink, to the outer surface of the first gravure roll 110, the first gravure roll 110, Dispenser 130 for applying color pigment), Dr. Blade 120 for removing unnecessary color resist among R (Red) color resist applied to the outer surface of gravure roll 110, and gravure A blanket roll 140 which transfers the R (Red) color resist from the roll 110 and prints (retransfers) the R (Red) pattern onto the surface of the substrate G, and the first gravure roll 110 and the first 1st frame part 175 arrange | positioned at both sides of the 1st blanket roll 140 etc. and rotatably supporting the 1st gravure roll 110 and the 1st blanket roll 140 is provided. The first frame portion 175 is provided in pairs.

The first gravure roll 110 serves to transfer the R (Red) color resist to the outer surface of the first blanket roll 140. Thus, the first gravure roll 110 and the first blanket roll 140 have substantially similar volumes. The first gravure roll 110 is rotatably mounted at the corresponding position by the first frame portion 175. A first gravure roll rotating part 112 (see FIG. 5) for rotating the first gravure roll 110 in place is coupled to the first frame part 175 so that the first gravure roll 110 rotates. . The first gravure roll rotating unit 112 may be applied as a motor. By the first gravure roll rotating unit 112, the first gravure roll 110 is substantially rotated at the corresponding position, and does not move up and down or left and right.

Although not shown in detail, as shown in FIG. 4, an uneven pattern substantially covered with R (red) color resist is formed on the outer surface of the first gravure roll 110. At this time, the uneven pattern may be embossed or engraved. If the embossed form R (Red) color resist is applied to the outer surface of the protruding uneven portion (not shown) is transferred to the first blanket roll 140, if the embossed form R inside the recessed recessed portion (110a) (Red) color resist is applied and transferred to the first blanket roll 140.

However, the first blanket roll 140 transfers the R (Red) color resist from the outer surface of the first gravure roll 110 and retransfers (prints) it onto the substrate G to form a pattern as shown in FIG. In forming the, it may be advantageous that the concave-convex pattern formed on the outer surface of the first gravure roll 110 has an intaglio shape in order to maintain a uniform thickness of the R (Red) pattern from the surface of the substrate G.

When the R (Red) color resist is applied to the outer surface of the first gravure roll 110 by the first dispenser 130, as shown in the enlarged portion B of FIG. 4, the substantially recessed groove 110a Only the R (red) color resist should be applied. However, when the first dispenser 130 applies the R (red) color resist to the outer surface of the first gravure roll 110, the R (red) color resist is selectively added only to the recesses 110a of the substantially intaglio shape. It is difficult to apply it all at once to accommodate it.

Therefore, when the first dispenser 130 applies the R (Red) color resist to the outer surface of the first gravure roll 110, the R (Red) color resist is widely spread on the outer surface of the first gravure roll 110 and applied. When the application is completed, the R (red) color resist may be accommodated only inside the recess 110a by removing unnecessary color resist applied to the remaining surface 110b except the recess 110a of the intaglio form. To make it work. To this end, the first doctor blade 120 is provided to remove unnecessary color resist around the first gravure roll 110.

The first doctor blade 120 includes a knife holder 121 and a first knife 122 coupled to the first knife holder 121. The first doctor blade 120 is coupled to be rotated at a predetermined angle in the first frame portion 175. As such, the first doctor blade rotating part 124 (see FIG. 5) for rotating the first doctor blade 120 in position in the first frame part 175 so that the first doctor blade 120 may be rotated at a predetermined angle. Is combined. The first doctor blade rotating unit 124 may also be applied to a motor or the like.

The first knife 122 has a length substantially similar to the length of the first gravure roll 110, the front end of the first gravure roll 110 is in contact with the outer surface of the first gravure roll 110. It is disposed to be inclined with respect to the role of scratching the outer surface of the first gravure roll (110).

In this way, since the tip of the first knife 122 is in contact with the outer surface of the first gravure roll 110, when the R (Red) color resist is applied to the outer surface of the rotating first gravure roll 110, the first knife ( 122, the color resist applied to the remaining surface 110b except for the concave recess 110a may be naturally removed. Therefore, finally, the R (Red) color resist may be accommodated only in the recess 110a (see FIG. 4B).

As described above, the first dispenser 130 serves to apply an R (Red) color resist to the outer surface of the first gravure roll 110. The first dispenser 130 is provided to be movable along the longitudinal direction of the first gravure roll 110 as well as to be able to be lifted or folded in one direction at the corresponding position. Therefore, the coating efficiency of the R (Red) color resist can be improved, and interference with surrounding structures can be avoided.

The first blanket roll 140 transfers the R (Red) color resist applied in the recess 110a formed on the outer surface of the first gravure roll 110, more specifically, on the outer surface of the first gravure roll 110. It serves as a substantial printing roll which prints an R (Red) pattern as shown in FIG.

On the outer surface of the first blanket roll 140, a sheet to which an R (Red) color resist is transferred from the first gravure roll 110 is wound. Since the sheet used a number of times more than the appropriate limit has to be replaced, the first blanket roll 140 is further provided with sheet replacement means (not shown) for easily replacing the sheet. The sheet replacement means serves to provide a certain tension to the sheet so that the sheet can be easily replaced, while the sheet is unfolded and stretched and wound on the outer surface of the first blanket roll (first 40). The sheet replacement means is provided on one surface 140a (see FIG. 4) cut off from the first blanket roll 140.

On the other hand, in the case of a printing apparatus for printing a small substrate (G) as in the present embodiment, since the first structure of the plurality of structures need not be attached to the shared stage 50, the first blanket roll 140 There is no need to move it. This corresponds to both the second and third blanket rolls 240, 340. That is, the first blanket roll 140 is substantially implemented to rotate only at the corresponding position, that is, the print job position, and the sharing stage 50 supporting the substrate G in this state is the first blanket roll 140. By moving the print job in progress, it is possible to substantially simplify the structure while significantly reducing the tact time required for the print job.

However, since the R (Red) color resist is first applied to the outer surface of the first gravure roll 110 by the first dispenser 130, the first blanket roll 140 is the outer surface of the first gravure roll 110. In order to transfer the R (Red) color resist applied to one of the first gravure roll 110 and the first blanket roll 140, one of the rolls must be approached and spaced apart while moving independently of the other roll.

However, as described above, in the printing apparatus of the present embodiment, since the first gravure roll 110 is designed to rotate only in place, the first blanket roll 140 is applied to the outer surface of the first gravure roll 110. In order to receive the transferred R (Red) color resist, the first blanket roll 140 must move independently of the first gravure roll 110. That is, since the first gravure roll 110 is disposed above the first blanket roll 140 on the basis of the sharing stage 50, the first blanket roll 140 is raised and lowered so that the first blanket roll 140 is moved. It may be necessary to approach and space apart the first gravure roll 110. To this end, a first roll pressure adjusting blanket roll driver 142 for raising and lowering the first blanket roll 140 independently is provided.

For reference, in the case of a printing apparatus for printing a large substrate (not shown), the pressure of the first blanket roll 140 to the substrate G is adjusted by controlling the height of the stage (not shown). However, when adjusting the pressure by the height control of the stage in this way, there is a problem that the pressure may vary for each part due to the deviation of the bending and the tilt of the stage, the bending and the tilt of the first blanket roll 140.

If the pressure is changed for each part during the printing operation, the width or height of the pattern printed on the substrate G may vary, and thus print quality may be deteriorated. By the way, in the case of a printing device for printing a large substrate (not shown), in order to adjust the pressure by the pressure of the cylinder only a rather large pneumatic device is required, but there is a practical problem that it is difficult to install in a clean room (clean room), The phosphorus pressure of the blanket roll 40 with respect to the board | substrate G was adjusted by controlling the height of a work stage.

Thus, in the present exemplary embodiment, the lifting and lowering operation of the first blanket roll 140 is controlled through the first roll pressure adjusting blanket roll driving unit 142 and at the same time, the pressure of the first blanket roll 140 against the substrate G is controlled. I can control it.

As shown in FIG. 5, the first pressure adjusting blanket roll driving unit 142 may be coupled to both sides of the first blanket roll 142, and may be lowered together with the first blanket roll 142, but the first frame may be lowered. The first elevating block 142a coupled to the unit 175 to be slidably movable, and the first actuator 142b coupled to the first elevating block 142a to elevate the first elevating block 142a. ).

A first blanket roll rotating part 145 for rotating the first blanket roll 140 is further coupled to the first lifting block 142a. The first blanket roll rotating part 145 which can be applied to a motor or the like is moved up and down together with the first lifting block 142a. A first sliding guide 143 is further provided between the first elevating block 142a and the first frame portion 175 so that the first elevating block 142a can be slidably moved to the first frame portion 175. do. Thus, when the first actuator 142b is operated, the first lifting block 142a may be lifted up and down along the line of the first sliding guide 143.

As the first actuator 142b, a pneumatic cylinder is applied in this embodiment. Of course, since the scope of the present invention is not limited thereto, it may be replaced by a hydraulic cylinder or a hydraulic pneumatic compound cylinder.

As described above, when the pneumatic cylinder is applied as the first actuator 142b, the position at which the first blanket roll 140 is lowered can be controlled by setting the air pressure of the pneumatic cylinder in advance, and thus the pressure is applied to the substrate G. It is possible to always maintain the uniform pressure of the first blanket roll 140 to be uniform. In particular, through the adjustment operation of the pneumatic pressure, even in spite of the bending or inclination of the shared stage 50, it is possible to apply a uniform phosphorous pressure to all parts of the substrate (G), thereby obtaining a uniform printing quality.

In addition, by setting the air pressure of the pneumatic cylinder in advance, the first blanket roll 140 is raised to press the first gravure roll 110 even when the R (Red) color resist is repaired from the first gravure roll 110. The phosphorous pressure of the first blanket roll 140 may be kept uniform and constant. As a result, although the first gravure roll 140 is inclined, the first blanket roll 140 may be disposed correspondingly, so that the R (red) color resist may be smoothly repaired.

Thus, when the length of the rod (not shown) is extended by the operation of the first actuator 142b by a separate control signal, the first lifting block 142a is raised and interlocked with the first blanket roll ( The 142 may contact the outer surface of the first gravure roll 110. In this state, the first blanket roll 142 is repaired with the R (Red) color resist from the first gravure roll 110.

On the contrary, when the length of the rod (not shown) is reduced by the operation of the first actuator 142b, the first lifting block 142a is lowered and the first blanket roll 142 is connected to the first gravure roll. Spaced apart from the outer surface of the 110. In this state, the first blanket roll 42 is pressed against the substrate G while the printing operation is performed.

As described above, after the first blanket roll 142 is spaced apart from the outer surface of the first gravure roll 110 by the operation of the first actuator 142b, the first blanket roll rotating part 145 is positioned at that position. ), And the parallel stage 50 is moved toward the first blanket roll 142 in parallel to the printing operation of the R (Red) pattern on the substrate G.

On the other hand, in the present embodiment, the first unit printing unit 100 further includes a first pressure control stopper unit 146. The first pressure adjusting stopper unit 146 precisely maintains the lowering position of the first blanket roll 140 and prevents the first blanket roll 142 from excessively lowering. In other words, the first pressure adjusting stopper unit 146 serves to elastically limit the lowering position of the first blanket roll 140.

In addition, the first pressure adjusting stopper unit 146 may be used when adjusting the pressure by controlling the height of the first blanket roll 140 with respect to the sharing stage 50. That is, after setting the first pressure adjusting stopper unit 146 to the required height and maintaining a constant pressure, for example, a maximum pressure on the first blanket roll 140 and proceeding a printing operation, the pressure is controlled by height control. It becomes printing.

The first pressure adjusting stopper unit 146 is provided on both sides of the lower region of the first blanket roll 140 along the length direction of the first blanket roll 140. In this embodiment, the first pressure adjusting stopper unit 146 is applied as an air bearing.

When the first blanket roll 142 is lowered by the operation of the first actuator 142b while the air pressure of the first pressure adjusting stopper unit 146 is set in advance, the first blanket roll 142 is coupled to the first blanket roll 142. The lowered position is adjusted by elastically contacting and pressing the first contact pressing portion 147 to the first pressure adjusting stopper unit 146. Therefore, proper phosphorus pressure control of the 1st blanket roll 140 with respect to the board | substrate G is attained. If the thickness of the substrate G is thin or thick, the printing operation position at which the first blanket roll 142 is lowered by adjusting the air pressure of the first pressure adjusting stopper unit 146 may be adjusted. Easy to adjust

A series of operations of the printing apparatus having such a configuration will be mainly described with reference to FIG. 2 as follows.

First, the substrate G is loaded onto the upper surface of the sharing stage 50 by a separate transfer device (see P1 in FIG. 2). When the substrate G is transferred to the upper portion of the sharing stage 50, the substrate G is injured at a predetermined height on the upper surface of the sharing stage 50 by the air pressure injected through the air hole 51. When the injection process of the air is stopped, the substrate G is loaded onto the upper surface of the sharing stage 50. As the air is adsorbed through the air hole 51 again, the substrate G may be adsorbed on the upper surface of the shared stage 50 to be fixed.

When the substrate G is supported on the upper surface of the sharing stage 50, the vision unit 70 provided at the front end of the first unit printing unit 100 may be aligned with the alignment mark marked on the substrate G. Acquire image information and transmit it to the controller. Then, the controller performs the alignment operation of the substrate G by operating the moving rail unit 52 based on the information to move the shared stage 50 along the X, Y, and θ axes.

When the alignment operation on the substrate G is completed, the first dispenser 130 applies R (Red) color resist to the outer surface of the first gravure roll 110. At this time, since the tip of the first knife 122 of the first doctor blade 120 is in contact with the outer surface of the first gravure roll 110, the process of applying the color resist to the outer surface of the rotating first gravure roll 110 The unnecessary color resist applied to the remaining surface 110b except the recessed portion 110a of the intaglio form by the first knife 122 is removed. Therefore, finally, the R (red) color resist is accommodated only in the recess 110a.

When the R (red) color resist is applied to the outer surface of the first gravure roll 110, the first blanket roll 140 is raised to receive repair of the R (red) color resist to which the first blanket roll 140 is applied. do. That is, the length of the rod (not shown) is extended by the operation of the first actuator 142b, and at the same time, the first raising and lowering block 142a is raised and the first blanket roll 142 is the first gravure roll 110. Contact the outer surface. As such, when the first blanket roll 140 is raised to contact the first gravure roll 110, the first gravure roll 110 may be rotated by the relative rotation between the first gravure roll 110 and the first blanket roll 140. The R (Red) color resist applied to the outer surface is transferred to the sheet wound on the outer surface of the first blanket roll 140 as it is.

Next, when the repair operation of the R (Red) color resist is completed, the length of the rod (not shown) is reduced again by the opposite operation of the first actuator 142b, and at the same time, the first lifting block 142a is lowered. While the first blanket roll 142 is spaced apart from the outer surface of the first gravure roll 110. In this case, since the first pressure adjusting stopper unit 146 is provided in the lower region of the first blanket roll 142, the first contact pressing unit 147 elastically contacts the first pressure adjusting stopper unit 146. As a result, the first blanket roll 142 stops at the correct lowered position for the print job, i.e., at the level of the appropriate pressure level with respect to the substrate G.

When the first blanket roll 40 is disposed at the correct position for the print job, the sharing stage 50 is moved toward the first unit printing unit 100 by the operation of the moving rail unit 52. At this time, the first blanket roll 140 rotates to the first blanket roll rotating unit 145. As such, as the sharing stage 50 moves toward the first blanket roll 140 and at the same time the first blanket roll 140 rotates, the surface of the substrate G is shown in FIG. 2A. , R (Red) pattern is printed (retransition) (refer to P2 of FIG. 2).

Next, the shared stage 50 that reaches the P2 position past the first unit printing unit 100 continues to pass through the second unit printing unit 100. When the sharing stage 50 reaches the P3 position through the second unit printing unit 100, the surface of the substrate G may be drawn on the surface of the substrate G by the second blanket roll 240 provided in the second unit printing unit 200. As shown in 2 (b), a G (Green) pattern is further formed.

Then, when the substrate G passes through the third unit printing unit 300 by the sharing stage 50, the substrate G is formed by the third blanket roll 340 provided in the third unit printing unit 300. The B (Blue) pattern is further formed on the surface of the substrate as shown in FIG.

The printing process of the G (Green) pattern and the B (Blue) pattern by the second and third unit printing units (200,300) and the printing process of the R (Red) pattern by the first unit printing unit 100 and Since it is substantially the same, it was briefly described.

The sharing stage 50 passing through the third unit printing unit 300 finally passes through the sharing press roll 60. At this time, the shared press roll 60 presses the substrate G so as to appropriately adjust the heights of the R, G, and B patterns printed on the substrate G. Therefore, the heights of the printed patterns can all be uniform, and print quality can be improved.

As a result, the board | substrate G finally reached | attained the position of P4 will be in the state like FIG. 1A. After the operation of the press roll 60 is completed, the substrate G is taken out and printing operation on a new substrate (not shown) is performed again.

As described above, according to the present embodiment, all of the R (Red), G (Green), and B (Blue) patterns can be collectively printed on the surface of the substrate G in an in-line type device. It can reduce the foot print and reduce the tact time.

In addition, according to the present embodiment, in particular, the tact time required for printing on a small substrate having a length / length of substantially 1 meter (m) or less can be significantly reduced.

In the above-described embodiment, the blanket roll is used to transfer the color resist in the gravure roll, but instead of the gravure roll, a gravure plate having a rectangular plate shape is provided, and the blanket roll is a gravure plate. It may be possible to transfer color resist from the substrate.

In the above-described embodiment, the first to third unit printing units have been described in which the pattern of the form as shown in FIG. However, if the outer pattern structure of the gravure rolls provided in the first to third unit printing units is changed, a pattern having a shape as shown in FIG. 1B may be finally printed on the substrate. Of course, even if the shape of the pattern is different from those of Fig. 1 (a) and (b) it can be sufficiently implemented.

As described above, the present invention is not limited to the described embodiments, and various modifications and variations can be made without departing from the spirit and scope of the present invention. Therefore, such modifications or variations will have to be belong to the claims of the present invention.

As described above, according to the present invention, it is possible to print all of the R (Red), G (Green), and B (Blue) patterns at once on the surface of the substrate in an in-line type, so that the foot of the device It can reduce foot print and reduce tact time.

Claims (17)

A plurality of unit printing units sequentially arranged spaced apart from each other along an in-lined print job line; And The substrate is supported on the upper surface, and includes a shared stage provided to pass all of the plurality of unit printing units along the printing work line, Each of the plurality of unit printing units is provided with a blanket roll for individually printing R (Red), G (Green), and B (Blue) patterns to the surface of the substrate moved by the sharing stage. There is a printing apparatus. The method of claim 1, The plurality of unit printing units are three first to third unit printing units spaced apart from each other along the print job line, Each of the first, second, and third unit printing units includes first, second, and third blanket rolls that print at least one of the R (Red), G (Green), and B (Blue) patterns on the surface of the substrate. , The first to third blanket rolls of each of the first to third unit printing units, the printing apparatus, characterized in that to individually print the R, G, B pattern to the surface of the substrate. The method of claim 2, The first to third unit printing units are respectively disposed above the first to third blanket rolls, and an outer surface thereof is selectively contacted with the outer surfaces of the first to third blanket rolls, respectively, so that R (Red), And a first to third gravure rolls for transferring G and blue color resists to the first to third blanket rolls corresponding to each other. The method of claim 2, And the first unit printing unit further comprises at least one shared vision unit configured to sense an alignment position with respect to the substrate supported by the sharing stage. The method of claim 2, The third unit printing unit presses a substrate on which at least one of the R, G, and B patterns is printed in order to adjust a height of at least one of the R, G, and B patterns printed on the substrate. A printing apparatus further comprising a shared press roll. The method of claim 5, The third unit printing unit is coupled to the shared press roll, characterized in that it further comprises a pressure control press roll driving unit for lifting up and down the shared press roll so that the shared press roll is approached and spaced with respect to the shared stage. Printing apparatus. The method of claim 1, Further comprising a device body for supporting the plurality of unit printing unit and the shared stage, Printing device, characterized in that the lower end of the device body is provided with a wheel for moving the wheel and the foot member. The method of claim 2, First to third pressure regulating devices which are respectively coupled to the first to third blanket rolls and lower the first to third blanket rolls so that the first to third blanket rolls approach and are spaced apart from the substrate, respectively. And a blanket roll driving unit. The method of claim 8, Each of the first to third pressure regulating blanket roll drives includes: First to third lifting blocks coupled to both sides of the first to third blanket rolls, respectively, to move up and down together with the first to third blanket rolls; And And first to third actuators coupled to the first to third lifting blocks, respectively, to lift the first to third lifting blocks. The method of claim 9, Further comprising first to third frame parts provided on both sides of the first to third blanket rolls to support the first to third blanket rolls, The first to the third frame portion is a printing device, characterized in that the first to third sliding guide portion for guiding the sliding movement of the first and third lifting block further. The method of claim 2, It is provided in the lower region of the first to third blanket roll, respectively, in the lowering position of the first to third blanket roll to adjust the pressure of the first to third blanket roll to the substrate during the printing operation Printing apparatus characterized in that it further comprises a first to third pressure control stopper unit for restricting sexually. The method of claim 11, Each of the first to third pressure adjusting stopper units is provided on both sides of the lower region of the first to third blanket rolls along the length direction of the first to third blanket rolls. The first to third blanket rolls are provided with a first to third contact pressing portion which is pressed against the first to third pressure adjusting stopper unit is provided. The method of claim 12, The first to the third pressure adjusting stopper unit is an air bearing (air bearing) printing apparatus. The method of claim 1, And a plurality of air holes are formed in the plate surface of the sharing stage to adsorb the substrate to the plate surface of the sharing stage or to separate the substrate from the plate surface of the sharing stage. The method of claim 1, And a moving rail unit configured to move the sharing stage along the transverse direction in the longitudinal direction of the blanket roll below the sharing stage. The method of claim 15, The moving rail unit, Rail body portion; And And a rail unit coupled to the shared stage and engaged with the rail body in a dove tail structure. The method of claim 15, The sharing stage is movable by the moving rail unit in the X-axis, Y-axis and θ axis with respect to the plate surface of the substrate.

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