TW201738641A - Printing equipment - Google Patents

Abstract

A printing equipment for printing a substrate includes a working stage, a first roller, a nozzle, a second roller and a printing plate. The working stage supports the substrate. The first roller rolls towards a first rolling direction. The nozzle sprays a fluid to the first roller. The second roller rolls towards a second rolling direction. The printing plate covers the second roller and has a printing surface away from the second roller. The printing plate has a transverse groove and a longitudinal groove. The longitudinal groove has an extension portion extending from the transverse groove towards the first rolling direction. The printing surface has an effective region adjacent to a side of the transverse groove towards the first rolling direction. A first length of the extension portion from the transverse groove is longer than a second length of the effective area in the first rolling direction.

Description

Printing Equipment

The present invention relates to a printing apparatus, and more particularly to a printing apparatus for printing a substrate.

The alignment film is a very important component in a liquid crystal display device, and its quality and printing efficiency directly determine the yield and production efficiency of the liquid crystal display device.

Generally, the alignment film first prints the printing liquid onto the substrate by printing on the printing plate, first forms a printing liquid film, and then forms an alignment film in a subsequent process.

With the increasing demand for electronic products, electronic products have become increasingly miniaturized and refined, and the utilization rate of substrates has become higher and higher. Therefore, the quality requirements for printing alignment films on substrates have become more and more. The higher it is.

One aspect of the present invention is to provide a printing apparatus that can guarantee the quality of production.

According to an embodiment of the invention, a printing device is used A printing substrate comprising a table, a first roller, a nozzle, a second roller and a printing plate. The workbench supports the substrate. The first roller is configured to rotate in a first direction of rotation. The nozzle is configured to eject liquid to the first roller. The second roller is configured to rotate in a second direction of rotation opposite the first direction of rotation. The printing plate at least partially covers the second roller, the printing plate has a printing surface away from the second roller, wherein the printing surface at least partially contacts the first roller, and at least another portion contacts the substrate, and the rotating second roller makes the printing surface opposite to the first roller Rotating with the substrate, the printing plate further has at least one lateral groove and at least one longitudinal groove, the lateral groove and the longitudinal groove intersecting on the printing surface, the lateral groove is substantially parallel to the axis of the second roller, and the longitudinal groove is substantially Vertically perpendicular to the lateral groove, and the longitudinal groove has an extension extending from the lateral groove toward the first rotational direction, the printing surface having at least one active region adjacent to the lateral groove toward one side of the first rotational direction, the extension being laterally The first length of the groove extending in the first rotational direction is greater than the second length of the active area in the first rotational direction.

The above-described embodiment of the present invention has at least the following advantages as compared with the prior art: the extension of the printing plate is greater than the first length of the lateral groove extending in the first rotational direction, and is greater than the effective area in the first rotational direction. Two lengths, so that the used solution or excess solution can flow along the extension and away from the effective area, so that the chance of contacting the active solution or the excess solution to the effective area after use is reduced, therefore, When the printing apparatus is operated, even if the solution remains in the portion where the extending portion is away from the effective portion, the chance that the printing liquid film formed in the effective portion of the printing liquid is destroyed by the remaining dissolved liquid is lowered. Since the printing liquid film formed in the effective region is less affected by the residual solution, the printing liquid formed in the effective region is formed. The chances of film defects are also reduced, and the chances of defects in the finished substrate are also reduced. Therefore, the production quality of the printing equipment is also guaranteed. Moreover, since the user does not need to clean the solution remaining in the extension portion away from the effective area, the work efficiency of the printing apparatus is also improved.

100‧‧‧Printing equipment

110‧‧‧Workbench

120‧‧‧First Roller

121‧‧‧ Roller surface

130‧‧‧Nozzles

140‧‧‧second roller

150‧‧‧Printing board

150a‧‧‧ concave part

151‧‧‧Printed surface

152‧‧‧lateral grooves

End of 152a‧‧

153‧‧‧ longitudinal grooves

154‧‧‧Extension

End of 154a‧‧

155‧‧ ‧ convex ring

155a‧‧‧Location area

156‧‧‧ oblique angle

157‧‧‧ perimeter

158‧‧‧Fixed area

159‧‧‧Perforation

160‧‧‧Scraper

161‧‧‧ shaving

200‧‧‧Substrate

201‧‧‧ Peripheral area

202‧‧‧ alignment mark

203‧‧‧ oblique angle

A-A, B-B‧‧ ‧ line segments

D‧‧‧Distance

EA‧‧ effective area

F‧‧‧Liquid

L1‧‧‧ first length

L2‧‧‧ second length

MD‧‧‧ moving direction

RD1‧‧‧first direction of rotation

RD2‧‧‧second direction of rotation

SA‧‧ effective area

X‧‧‧ axis

1 is a side elevational view of a printing apparatus in accordance with an embodiment of the present invention.

Fig. 2A is a front elevational view showing the printing surface of the printing plate of Fig. 1.

Fig. 2B is a front elevational view showing the substrate corresponding to the printing surface of Fig. 2A.

Figure 3 is a cross-sectional view along line A-A of Figure 2A.

Figure 4 is a cross-sectional view along line B-B of Figure 2A.

Fig. 5A is a front elevational view showing a printing surface of a printing plate according to another embodiment of the present invention.

Fig. 5B is a front elevational view showing the substrate corresponding to the printing surface of Fig. 5A.

The embodiments of the present invention are disclosed in the following drawings, and the details of However, it should be understood that these practical details are not intended to limit the invention. That is, in some embodiments of the invention, these practical details are not necessary. In addition, some of the conventional structures and elements are shown in the drawings in a simplified schematic manner in order to simplify the drawings.

Unless otherwise defined, all terms (including technical and scientific terms) used herein are intended to mean the meaning Furthermore, the definition of the above vocabulary in a commonly used dictionary should be interpreted as meaning consistent with the related art of the present invention in the content of the present specification. Unless specifically defined, these terms are not to be interpreted as idealized or overly formal.

Please refer to pictures 1~4. FIG. 1 is a side elevational view of a printing apparatus 100 in accordance with an embodiment of the present invention. Fig. 2A is a front elevational view showing the printing surface 151 of the printing plate 150 of Fig. 1. FIG. 2B is a front view of the substrate 200 corresponding to the printing surface 151 of FIG. 2A. Figure 3 is a cross-sectional view along line A-A of Figure 2A. Figure 4 is a cross-sectional view along line B-B of Figure 2A. As shown in FIGS. 1 to 4, a printing apparatus 100 is used to print a substrate 200. The printing apparatus 100 includes a stage 110, a first cylinder 120, a nozzle 130, a second cylinder 140, and a printing plate 150. The stage 110 supports the substrate 200. The first roller 120 is configured to rotate in the first rotational direction RD1. The nozzle 130 is configured to eject the liquid F to the first drum 120. The second roller 140 is configured to rotate in a second rotational direction RD2 opposite to the first rotational direction RD1. In addition, the edge of the printing plate 150 may have a fixing area 158 for fixing the printing plate 150 to the second roller 140. In an embodiment, the printing plate 150 may be perforated by the fixing portion 158 by means of a fixing member (not shown) such as a bolt. 159 is attached to the second roller 140 to lock the printing plate 150 to the second roller 140.

The printing plate 150 at least partially covers the second roller 140, the printing plate 150 has a printing surface 151, and the printing surface 151 is away from the second roller 140, wherein the printing surface 151 at least partially contacts the first roller 120, and at least another portion contacts The substrate 200 and the rotating second roller 140 rotate the printing surface 151 relative to the first roller 120 and the substrate 200. The printing plate 150 further has at least one lateral groove 152 and at least one longitudinal groove 153. When the second roller 140 is rotated, the position of the lateral groove 152 at least partially corresponds to the peripheral line region 201 on the substrate 200, wherein the peripheral line region 201 is available for external lead connections. The transverse groove 152 intersects the longitudinal groove 153 disposed on the printing surface 151 of the printing plate 150, the lateral groove 152 is substantially parallel to the axis X of the second roller 140, and the longitudinal groove 153 is substantially perpendicular to the lateral groove 152, and The longitudinal groove 153 has an extending portion 154 extending from the lateral groove 152 toward the first rotational direction RD1, and the printing surface 151 has at least one effective area EA adjacent to the lateral groove 152 toward one side of the first rotational direction RD1. The extension portion 154 has a first length L1 extending from the lateral groove 152 toward the first rotational direction RD1 and a second length L2 of the effective area EA in the first rotational direction RD1. Specifically, when the second roller 140 is rotated, the effective area EA of the printing surface 151 at least partially corresponds to the effective area SA of the substrate 200.

When the printing apparatus 100 is operated, the liquid F ejected from the nozzle 130 to the first drum 120 is printing liquid, and the first drum 120 is rotated in the first rotational direction RD1, and the second drum 140 is rotated in the second rotational direction RD2. At this time, the rotating second roller 140 brings the printing surface 151 of the printing plate 150 into contact with the first roller 120. In contrast, the first roller 120 rolls on the printing surface 151, so that the printing liquid forms a printing liquid film on the printing surface 151, and thereafter, as the second roller 140 rotates in the second rotation direction RD2, the printing liquid film is printed to The effective area SA of the substrate 200. In the present embodiment, the peripheral line region 201 corresponding to the lateral groove 152 is substantially not printed to the printing liquid. membrane. It should be noted that the printing liquid may include an alignment film material, an organic semiconductor film material, an insulating protective film material, or other materials suitable for being disposed on the substrate by a printing method. The above is merely an example, but the invention is not limited thereto.

When the printing surface 151 of the printing plate 150 is cleaned, the liquid F ejected from the nozzle 130 toward the first roller 120 is a solution, and the first roller 120 is rotated in the first rotational direction RD1, and the second roller 140 is directed toward the second. The rotation direction RD2 is rotated. At this time, the rotating second roller 140 brings the printing surface 151 of the printing plate 150 into contact with the first roller 120. In contrast, the first roller 120 rolls on the printing surface 151 such that the dissolved liquid at least partially covers the printing surface 151, and the printing surface 151 is cleaned to dissolve and wash the printing liquid remaining on the printing surface 151. The used solution or excess solution will flow to the longitudinal groove 153 via the lateral groove 152 and then flow in the longitudinal groove 153 toward the first rotational direction RD1 to flow to the longitudinal groove 153. Extension 154.

Furthermore, as described above, the extension portion 154 of the printing plate 150 extends from the lateral groove 152 to the first length L1 extending in the first rotational direction RD1, and is greater than the second length L2 of the effective region EA in the first rotational direction RD1. In addition, the used solution or excess solution can flow along the extension portion 154 and away from the effective area EA, so that the chance of contacting the active area EA after using the dissolved solution or excess solution is reduced, therefore, when When the printing apparatus 100 is operated, even if the solution remains in the portion where the extending portion 154 is away from the effective area EA, the chance that the printing liquid film formed by the printing liquid in the effective area EA is destroyed by the remaining dissolved liquid is lowered. Since the chance of the printing liquid film formed in the effective area EA being affected by the residual solution is lowered, the effective area EA The chances of the formed printing liquid film producing defects are also correspondingly reduced, and the chance of causing defects in the finished product of the substrate 200 is also reduced, and therefore, the production quality of the printing apparatus 100 is also secured. Moreover, since the user does not need to clean the solution remaining in the extension portion 154 away from the effective area EA, the work efficiency of the printing apparatus 100 is also improved.

In other words, the extension 154 has a distal end 154a, while the distal end 154a is remote from the lateral groove 152, and the distal end 154a of the extension 154 has a distance D between the first rotational direction RD1 and the active area EA. The distance D is the difference between the first length L1 and the second length L2. In this way, the used solution or excess solution can flow to the end 154a of the extension portion 154, so that the chance of defects in the printing liquid film formed by the effective area EA is reduced, and the finished product of the substrate 200 is also reduced. Awkward opportunities, therefore, the production quality of the printing apparatus 100 is also guaranteed.

Additionally, in particular, the longitudinal grooves 153 may intersect the ends 152a of the lateral grooves 152. That is to say, the used solution or excess solution will flow to the end 152a via the guiding of the lateral groove 152, and will flow to the longitudinal groove 153 at the end 152a, and then to the first in the longitudinal groove 153. The direction of rotation RD1 flows to flow to the extension 154 of the longitudinal groove 153. In one embodiment, as shown in FIG. 2A, the number of longitudinal grooves 153 is two and intersects the opposite ends 152a of the lateral grooves 152, respectively. In this way, the used solution or excess solution can be flowed to the intersecting longitudinal groove 153 via any one end 152a of the lateral groove 152, so that the efficiency of guiding the solution to the longitudinal groove 153 is improved. .

In the embodiment, the printing apparatus 100 further includes a scraper 160. As shown in Fig. 1, the squeegee 160 has a scraping edge 161 which abuts the roller surface 121 of the first roller 120. In this way, when the nozzle 130 ejects the liquid F to the first roller 120, and the first roller 120 rotates in the first rotational direction RD1, the squeegee 160 helps the liquid F to uniformly cover the roller surface 121, which is advantageous for the liquid F. It is then possible to uniformly cover the printing surface 151 of the printing plate 150.

Further, in the present embodiment, the stage 110 may be disposed to move the substrate 200 in the moving direction MD. That is, the printing apparatus 100 can be set such that the table 110 moves the substrate 200 toward the moving direction MD when the second roller 140 rotates. Without being limited thereto, in other embodiments, the printing apparatus 100 can also be configured such that when the second roller 140 rotates and the second roller 140 moves simultaneously, the table is stationary to maintain the substrate 200 in place.

Please refer to pictures 5A-5B. FIG. 5A is a front elevational view of the printing surface 151 of the printing plate 150 in accordance with another embodiment of the present invention. FIG. 5B is a front view of the substrate 200 corresponding to the printing surface 151 of FIG. 5A. When the second roller 140 is rotated, the printing liquid film formed on the printing surface 151 of FIG. 5A is printed on the substrate 200 of FIG. 5B. As shown in Fig. 5A, the portion of the printing plate 150 covered with diagonal lines, that is, the printing surface 151, protrudes from the remaining portion of Fig. 5A. In other words, portions of the printing plate 150 that are not covered with diagonal lines, such as the lateral grooves 152 and the longitudinal grooves 153, are recessed relative to the printing surface 151 in FIG. 5A. As described above, the lateral grooves 152 of the printing plate 150 correspond at least partially to the peripheral line region 201 on the substrate 200, and the effective area EA of the printing surface 151 corresponds at least partially to the effective area SA of the substrate 200. In addition, in the case of FIG. 5B, the substrate 200 includes, for example, 14 Effect area SA.

More specifically, as shown in Fig. 5A, the longitudinal groove 153 located near the center in the figure may also intersect the portion between the opposite ends 152a of the lateral groove 152. As such, the longitudinal grooves 153 that intersect between the opposite ends 152a of the lateral grooves 152 can also assist in directing the solution to the longitudinal grooves 153 such that the solution is directed to the end 154a of the extension 154. Efficiency has been further improved.

Furthermore, in the present embodiment, the printed board 150 further has at least one convex ring 155. The convex ring 155 defines a positioning area 155a in a range surrounded by the printing surface 151. In an embodiment, the positioning area 155a may be a recess surrounded by the convex ring 155. In contrast, as shown in FIG. 5B, the substrate 200 is provided with a registration mark 202. After the printing liquid film on the convex ring 155 is printed on the substrate 200, the user can use the printing liquid film on the convex ring 155. The hole that is printed at the position where the substrate 200 is located (that is, the position corresponding to the positioning area 155a) is compared with the alignment mark 202, so that the user can easily determine whether the position of the printing liquid film on the substrate 200 is printed. correct. In one embodiment, as shown in FIG. 5A, the number of convex rings 155 may be plural to correspond to the alignment mark 202 on the substrate 200, and the longitudinal grooves 153 are located between the convex rings 155.

In an embodiment, when the substrate 200 is placed on the worktable 110, as a foolproof mechanism, as shown in FIG. 5B, the shape of the substrate 200 is set at an oblique angle 203 to allow the user to easily and easily determine the substrate 200. Is the orientation placed on the workbench 110 correct? In order to conform to the outer shape of the substrate 200, the printing liquid film is prevented from being printed on the table 110 at the oblique angle 203 of the substrate 200. The contamination is caused. As shown in FIG. 5A, the printing plate 150 also has an oblique angle 156, and the oblique angle 156 is located at the periphery 157 of the printing surface 151. Moreover, the printing plate 150 further has a concave portion 150a outside the periphery 157 of the printing surface 151, and the concave portion 150a is recessed relative to the printing surface 151 to prevent the printing liquid film from exceeding the range of the substrate 200, thereby causing the work table 110. Pollution. Additionally, in an embodiment, the longitudinal groove 153 can communicate with the concave portion 150a, and the convex ring 155 can be interposed between the longitudinal groove 153 and the concave portion 150a. It should be understood that the above design can be applied to at least part of FIG. 2A according to the actual situation.

In summary, the technical solution of the present invention has obvious advantages and beneficial effects compared with the prior art. Through the above technical solutions, considerable technological progress can be achieved, and industrially widely used value, which has at least the following advantages: since the extension of the printing plate is extended by the transverse groove to the first rotation direction, the first length is greater than the effective a second length of the zone in the first direction of rotation, such that the used solution or excess solution can flow along the extension and away from the active zone, so that the dissolved solution or excess solution after use is contacted The chance of the effective area is reduced. Therefore, when the printing apparatus is operated, even if the solution remains in the portion where the extending portion is away from the effective portion, the printing liquid film formed by the printing liquid in the effective area is destroyed by the residual dissolved liquid. It can also be reduced. Since the chance of the printing liquid film formed in the effective region being affected by the residual solution is lowered, the chance of defects in the printing liquid film formed in the effective region is also lowered, and the chance of causing defects in the finished product of the substrate is also reduced. Therefore, the production quality of printing equipment is also guaranteed. Moreover, since the user does not need to clean the solution remaining in the extension portion away from the effective area, the work efficiency of the printing apparatus is also improved.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and the present invention can be modified and modified without departing from the spirit and scope of the present invention. The scope is subject to the definition of the scope of the patent application attached.

150‧‧‧Printing board

151‧‧‧Printed surface

152‧‧‧lateral grooves

End of 152a‧‧

153‧‧‧ longitudinal grooves

154‧‧‧Extension

End of 154a‧‧

158‧‧‧Fixed area

159‧‧‧Perforation

A-A, B-B‧‧ ‧ line segments

D‧‧‧Distance

EA‧‧ effective area

L1‧‧‧ first length

L2‧‧‧ second length

RD1‧‧‧first direction of rotation

RD2‧‧‧second direction of rotation

Claims (10)

A printing apparatus for printing a substrate comprising: a work table supporting the substrate; a first roller configured to rotate in a first rotational direction; and a nozzle configured to eject a liquid to the first roller; a second roller configured to rotate in a second rotational direction opposite to the first rotational direction; and a printing plate at least partially covering the second roller, the printing plate having a printing surface away from the second roller, wherein The printing surface at least partially contacts the first roller, and at least another portion contacts the substrate, and the rotating second roller rotates the printing surface relative to the first roller and the substrate, the printing plate further having at least one lateral groove And at least one longitudinal groove, the lateral groove intersecting the longitudinal groove disposed on the printing surface, the lateral groove being substantially parallel to an axis of the second roller, the longitudinal groove being substantially perpendicular to the lateral concave a groove, and the longitudinal groove has an extension extending from the transverse groove toward the first rotation direction, the printing surface having at least one effective area adjacent to the first groove toward the first rotation To the side, the length of one of the first extending portion extending toward the rotational direction of the first transverse grooves, the effective area is greater than the length of one second in the first rotational direction. The printing apparatus of claim 1, wherein the extension has a distal end away from the lateral groove, and the end of the extension has a distance from the active zone in the first rotational direction. The printing apparatus of claim 1, wherein the portrait The groove intersects at one end of the lateral groove. The printing apparatus of claim 1, wherein the number of the longitudinal grooves is two and intersects at opposite ends of the lateral grooves, respectively. The printing apparatus of claim 1, wherein the longitudinal groove intersects a portion between opposite ends of the lateral groove. The printing apparatus of claim 1, wherein the printing plate further has at least one convex ring. The printing apparatus of claim 6, wherein the number of the convex rings is plural, and the longitudinal grooves are located between the convex rings. The printing apparatus of claim 1, wherein the printing plate has an oblique angle at a perimeter of the printing surface. The printing apparatus according to claim 1, further comprising: a scraper having a scraping edge adjacent to a roller surface of the first roller. The printing apparatus of claim 1, wherein the table is configured to move the substrate in a moving direction.