KR20110011466A - Align apparatus and method for aligning upper align marks and lower align marks simultaneously - Google Patents

Abstract

PURPOSE: A device and a method for simultaneously aligning upper and lower align marks are provided to reduce align time by simultaneously aligning stamp head and chamfer align marks. CONSTITUTION: A device for simultaneously aligning upper and lower align marks comprises bidirectional align cameras(248a,248b), driving units, a three-axis align unit(246), and a controller. The align cameras are installed in a gantry and are used for simultaneously detecting at least a pair of upper and lower align marks. The driving units controls the movement of the bidirectional align cameras. The three-axis align unit is installed in a stamp head and adjusts the position of the stamp head based on the detected upper and lower align marks. The controller controls the operation of the bidirectional align cameras, the driving units, and the three-axis align unit.

Description

Alignment Apparatus and Method for Aligning Upper Align Marks and Lower Align Marks Simultaneously}

The present invention relates to an alignment apparatus and method for simultaneously aligning an upper alignment mark and a lower alignment mark.

More specifically, the present invention uses a printing plate and a stamp head to form a pattern on a glass substrate in an intaglio or embossed stamping method, while stamp head alignment marks and printing plate alignment marks or stamp head alignment marks and glass chamfered alignments. An alignment apparatus and method for simultaneously aligning an upper alignment mark and a lower alignment mark by simultaneously detecting an in mark and correcting an error according to the detection result.

Generally, in order to manufacture a flat panel display (FPD) such as a plasma display panel (PDP) or a liquid crystal display panel (LCD), a single large glass substrate or a printed circuit board (PCB) is used. Several same or different patterns (e.g., electrode circuit patterns, color filters, black, etc.) on electrodes (collectively referred to as " substrate "), such as electrodes or dots. A black matrix or external electromagnetic interference (EMI) filter must be formed. These patterns are for example by a photoresist (PR) liquid or a metal paste (hereinafter referred to as " ink ") such as copper (Cu), silver (Ag), aluminum (Al), or the like. Is formed. In addition, in order to form the above-mentioned patterns on a board | substrate, the roll printing apparatus for pattern formation is used.

As the above-mentioned roll forming apparatus for pattern forming, for example, a roll forming apparatus for pattern forming of a gravure offset method using a gravure roll and a blanket roll is used.

FIG. 1A is a schematic cross-sectional view of a conventional gravure offset type pattern printing roll printing apparatus and a pattern forming apparatus, and FIG. 1B is a gravure offset type pattern printing roll printing apparatus and pattern shown in FIG. 1A. A side cross-sectional view of the forming apparatus is schematically shown.

1A and 1B, the printing roll device 100 for pattern formation according to the prior art has a shape of a pattern (not shown) to be printed on the multi-faceted substrate 150 for a flat panel display (FPD), for example. A first roll (110) having an embossed convex portion (iron 112) and having first and second first rotational shafts (114, 114) at both sides; first and second portions of the first roll (110). First and second first supporting members 116 and 116 rotatably supporting the second first rotating shafts 114 and 114; a first roll rotating motor (not shown) to rotate the first roll 110; the first An ink supply device 120 for supplying printing ink into the convex portion 112 of the roll 110. When the first roll 110 is rotated by the first roll rotation motor, the ink supply device 120 A doctor blade (130) for removing the supplied ink, leaving only the embossed shape in the convex portion 110; contacting in parallel with the first roll 110; And a blanket sheet 142 which is disposed to be spaced apart from each other and has a blanket sheet 142 which is formed on the surface thereof when the first roll 110 is rotated so that the ink of the relief shape formed in the convex portion 112 is transferred. And a second roll 140 having first and second second rotation shafts 144 and 144 at both side ends thereof, and rotatably supporting the first and second second rotation shafts 144 and 144 of the second roll 140. First and second second support members 146 and 146, and the first and second second support members 146 and 146 are mounted, and the first and second second support members 146 and 146 are configured to enable forward and backward movement of the second roll 140. A second linear motion guide (148, 148); a second roll rotating motor (150) for rotating the second roll (140); and a second roll actuator (160) for controlling movement of the second roll (140). Include.

A gravure roll is typically used for the first roll 110, a blanket roll is typically used for the second roll 140, and the ink supply device 120 is a conventional syringe. A discharge type ink supply device of the type or nozzle type is used. In addition, the pattern forming apparatus of the prior art is the above-described pattern forming printing roll device 100, the main frame 180 where the stage 170 for supporting the substrate 150 is located, and the stage for supporting the stage 170. It consists of a support member 172. In such a conventional pattern forming apparatus, a pattern ink transfer operation is performed on the surface of the multi-faceted substrate 150 by the pattern forming printing roll apparatus 100.

In general, a large-area multi-sided substrate having a multi-sided etch in order to reduce tactile time and increase productivity in forming a pattern on a multi-sided substrate, for example, using a conventional printing roll device 100 for pattern formation. Front pattern printing is performed, which prints out at one time. To this end, in the case of flat panel displays, the size of the first roll 110 (gravure roll) and the second roll 140 (blanket roll) is gradually increasing as the demand for multifaceted odor and large area is gradually increased. .

In the above-described prior art pattern-forming printing roll apparatus 100 and pattern forming apparatus, the alignment between the second roll 140 and the substrate 150 is a front-side pattern on a large-area multi-faceted substrate for the front side pattern printing. Since printing is performed, alignment between the second roll 140 and the substrate 150 should be made. In this case, the following problem occurs.

1. It is quite difficult to align between the second roll 140 and the substrate 150 because the size of the second roll 140 is quite large.

2. Therefore, there is a high possibility of the occurrence of a defect in the entire multi-sided substrate finally produced.

3. When the defect of the multi-faceted substrate occurs, the entire expensive substrate must be discarded, which ultimately increases the manufacturing cost and manufacturing time of the multi-sided substrate.

Therefore, a new method for solving the above-mentioned problems is required.

The present invention is to solve the above-described problems of the prior art, while forming a pattern on the glass substrate by using the printing plate and stamp head in an engraved or embossed stamping method, the stamp head alignment mark and the printing plate alignment mark or stamp head The present invention provides an alignment apparatus and method for simultaneously aligning an upper alignment mark and a lower alignment mark by simultaneously detecting an alignment mark and a glass chamfer alignment mark and correcting an error according to the detection result.

According to a first aspect of the present invention, an alignment apparatus for aligning an upper alignment mark and a lower alignment mark at the same time, the alignment device being mounted to the gantry to enable in / out movement, and at least one pair At least one pair of bidirectional alignment cameras for simultaneously detecting an upper alignment mark and at least one pair of lower alignment marks of the upper alignment mark; At least one pair of driving devices for controlling the in / out movement of the at least one pair of bidirectional align cameras: mounted on a stamp head and detected by the at least one pair of bidirectional align cameras A three-axis alignment device for adjusting the position of the stamp head to correct an error according to a detection result of the at least one pair of upper alignment marks and the at least one pair of lower alignment marks; And a controller for controlling the operation of the at least one pair of bidirectional alignment cameras, the at least one pair of driving devices, and the three-axis alignment device, and detecting the error.

According to a second aspect of the present invention, there is provided an alignment method for simultaneously aligning an upper alignment mark and a lower alignment mark, the method comprising: a) at least one pair of at least one pair of bidirectional alignment cameras formed on a printing plate; Detecting a first image of the first lower alignment mark and at least a pair of the upper alignment marks formed on the stamp head; b) transmitting the first image to a control device; c) the control device comparing the first image to confirm an alignment state between the stamp head and the printing plate; d) when a first error occurs between the at least one pair of first lower alignment marks and the at least one pair of upper alignment marks as a result of the comparison of the at least one pair of first images, the controller is required to align; Transmitting a first error correction value to a three-axis alignment device mounted on the stamp head; And e) adjusting, by the three-axis alignment device, the position of the stamp head by finely controlling the movement of the stamp head in the front-back direction, the left-right direction, and the rotation direction in response to the first error correction value. Characterized in that.

According to a third aspect of the invention, there is provided an alignment method for simultaneously aligning an upper alignment mark and a lower alignment mark, the method comprising: a) at least one pair of bidirectional alignment cameras formed on each chamfer of a substrate; Detecting a second image of the pair of second lower alignment marks and the at least one pair of upper alignment marks formed on the stamp head; b) transmitting the second image to a control device; c) the control device comparing the second image to confirm an alignment state between the stamp head and each chamfer; d) when a second error occurs between the at least one pair of second lower alignment marks and the at least one pair of upper alignment marks as a result of the comparison of the at least one pair of second images, the controller is required to align; Transmitting a second error correction value to a three-axis alignment device mounted on the stamp head; And e) adjusting the position of the stamp head by finely controlling the movement of the stamp head in the front-back direction, the left-right direction, and the rotation direction in response to the second error correction value. Characterized in that.

The use of the simultaneous alignment apparatus and method of the stamp head alignment mark and the printing plate alignment mark or the stamp head alignment mark and the glass chamfer alignment mark of the present invention achieves the following advantages.

1. As the size of the printing plate and the stamp head is significantly reduced, the alignment of the stamp head alignment mark and the printing plate alignment mark or the stamp head alignment mark and each chamfer alignment mark becomes easy.

2. Since the alignment of the stamp head alignment mark and each chamfer alignment mark is performed at the same time, the alignment time is shortened.

3. Since the stamp head alignment mark and each chamfer alignment mark are aligned, the final result of the multi-faceted substrate is significantly lowered.

4. Even if the stamp head alignment mark and any chamfer alignment mark are misaligned, only the misaligned chamfer is discarded, so that the yield of the final substrate is significantly improved.

5. The manufacturing cost and manufacturing time of the multifaceted substrates are significantly reduced.

Further advantages of the present invention can be clearly understood from the following description with reference to the accompanying drawings, in which like or similar reference numerals denote like elements.

Hereinafter, the present invention will be described with reference to embodiments and drawings of the present invention.

2A is a plan view of an intaglio stamping offset printing apparatus and a printing system according to an embodiment of the present invention, and FIG. 2B is a partial side of an intaglio stamping offset printing apparatus according to an embodiment of the present invention. It is a figure which shows sectional drawing.

2A and 2B, an intaglio stamping offset printing system 201 according to an embodiment of the present invention includes an intaglio stamping offset printing apparatus 200; A first stage 260 supporting the engraved printing plate 262; A first support member 263 supporting the first stage 260; A first actuator 266 mounted on the first support member 263 and controlling movement of the first stage 260 in the front, rear, left, and right directions; A second stage 270 supporting the substrate 250; A second support member 272 for supporting the second stage 270; A second actuator 276 mounted on the second support member 272 and controlling movement of the second stage 270 in the front, rear, left, and right directions; In order to pre-align the substrate 250 and the second stage 270 through a pair of holes 277 formed near both ends of the second support member 272. A pair of substrate alignment devices 278; A second support member 272 for supporting the second stage 270; And a main frame 280 in which the offset printing apparatus 200, the first stage 260, and the second stage 270 are located. It should be noted that in FIG. 2A the pattern 264 is labeled ABC.

Hereinafter, specific configurations and operations of the intaglio stamping offset printing apparatus 200 and the offset printing system 201 according to an embodiment of the present invention will be described in detail.

Referring again to FIGS. 2A and 2B, the intaglio stamping offset printing apparatus 200 according to the exemplary embodiment of the present invention may have the intaglio printing plate 262 having the shape of the pattern 264 to be printed on the substrate 250. It is provided. While the first gantry 211 moves in the X direction (ie, the forward direction) approaching the intaglio printing plate 262 along the pair of first linear motion guides 218a by a first driving member (not shown), The ink dispenser 220 mounted on the first gantry 211 applies ink on the intaglio printing plate 262. In the embodiment shown in FIG. 2A, the ink dispenser 220 is illustratively a cylindrical ink dispenser (eg, a photoresist (PR) liquid dispenser) mounted to be movable on the first gantry 211. It is describing. Alternatively, the ink dispenser 220 of the present invention may be implemented with a slit die nozzle (not shown) fixedly mounted on the first gantry 211. The ink dispenser 220 discharges ink onto the negative printing plate 262 while reciprocating along the longitudinal direction (Y direction) of the first gantry 211 while the first gantry 211 moves on the negative printing plate 262. do.

When the application of the ink on the intaglio printing plate 262 is completed, the first gantry 211 is moved away from the intaglio printing plate 262 on the pair of first linear motion guides 218a by a first driving member (not shown). Move in the direction (i.e. backward direction). In this case, the squeeze blade 230 mounted on the first gantry 211 removes ink applied on the intaglio printing plate 262. As a result, the shape of the pattern 264 is formed in the recessed part 212 of the intaglio printing plate 262. Thereafter, the first gantry 211 returns to its original position.

Thereafter, the second gantry 241 is approached in the X direction (i.e., backward direction) by the second driving member (not shown) to approach the intaglio printing plate 262 along the pair of second linear motion guides 242. Move. In this case, the engraved printing plate 262 and the first support member 263 move the first stage 260 forward, backward, left and right directions by the first actuator 266 mounted on the first support member 263. It is aligned in advance by moving in the rotational direction. Thereafter, the stamp head 240 and the intaglio printing plate (3) are mounted by a pair of alignment cameras 248 mounted on the second gantry 241 and a three-axis alignment device 246 mounted on the stamp head 240. 262 is aligned. To this end, alignment marks (not shown) are formed on the stamp head 240 and the engraving plate 262, respectively. Alignment of the stamp head 240 is made by the three-axis aligning device 246 which can finely control the movement of the front-back direction (X direction), the left-right direction (Y direction), and the rotation direction. Thereafter, when the stamp head 240 descends on the intaglio printing plate 262 and contacts the intaglio printing plate 262, the pattern 264 formed on the intaglio printing plate 262 is transferred to the stamp head 240. Thereafter, the second gantry 241 is moved in the X direction (ie, the forward direction) to approach the substrate 250 along the pair of second linear motion guides 242 by a second driving member (not shown). do. Thereafter, the stamp head 240 moves on any one of the multi-facets 252 formed on the substrate 250 (eg, the first chamfer 252a1). In this case, the substrate 250 and the second stage 270 are pre-aligned by the pair of substrate alignment devices 278. Thereafter, the stamp head 240 is aligned with the first chamfer 252a1 by the pair of alignment cameras 248 and the three-axis alignment device 246. It is apparent that the alignment mark (not shown) is formed on the first chamfer 252a1. Thereafter, the stamp head 240 is lowered onto the first chamfer 252a1 so that the pattern 264 formed on the stamp head 240 is printed in a stamping manner with the first chamfer 252a1.

On the other hand, while the stamp head 240 prints the pattern 264 on the first chamfer 252a1, cleaning of residual ink existing on the intaglio printing plate 262 is performed. To this end, the printing plate cleaning device 290 may be used in the embodiment shown in FIG. 2A. The printing plate cleaning apparatus 290 may include a third gantry 291; And a cleaning roll 292 mounted on the third gantry 291 to clean the intaglio printing plate 262. The printing plate cleaning device 290 moves onto the intaglio printing plate 262 along the pair of third linear motion guides 218b provided to reciprocate the third gantry 291, thereby remaining on the intaglio printing plate 262. After cleaning the ink, it is returned to its original position.

Thereafter, the first gantry 211 is moved onto the intaglio printing plate 262 or newly provided intaglio printing plate 262 along the pair of first linear motion guides 218a by a first driving member (not shown). While moving, the ink dispenser 220 applies ink onto the negative printing plate 262. Thereafter, as the first gantry 211 moves in the reverse direction, the squeeze blade 230 removes the ink applied on the negative printing plate 262 to form a pattern 264 on the negative printing plate 262. Thereafter, the second gantry 241 moves on the intaglio printing plate 262, and alignment between the stamp head 240 and the intaglio printing plate 262 is performed. Thereafter, the stamp head 240 descends and contacts the intaglio printing plate 262 so that the pattern 264 formed on the intaglio printing plate 262 is transferred to the stamp head 240. Thereafter, the stamp head 240 is moved, for example, onto the second chamfer 252a2 on the substrate 250 to align. Thereafter, the stamp head 240 is lowered onto the second chamfer 252a2 so that the pattern 264 formed on the stamp head 240 is printed in a stamping manner with the second chamfer 252a2.

FIG. 2C illustrates a plan view of an embossed stamping offset printing apparatus and a printing system according to an exemplary embodiment, and FIG. 2D is a partial side of an embossed stamping offset printing apparatus according to an embodiment of the present invention. It is a figure which shows sectional drawing.

2C and 2D, an embossed stamping offset printing system 201 according to an embodiment of the present invention has an embossed stamping offset printing apparatus according to an embodiment of the present invention having the above-described configuration ( 200); A first stage 260 supporting the embossed printing plate 262; A first support member 263 supporting the first stage 260; A first actuator 266 mounted on the first support member 263 and controlling movement of the first stage 260 in the front, rear, left, and right directions; A second stage 270 supporting the substrate 250; A second support member 272 for supporting the second stage 270; A second actuator 276 mounted on the second support member 272 and controlling movement of the second stage 270 in the front, rear, left, and right directions; In order to pre-align the substrate 250 and the second stage 270 through a pair of holes 277 formed near both ends of the second support member 272. A pair of substrate alignment devices 278; A second support member 272 for supporting the second stage 270; And a main frame 280 in which the offset printing apparatus 200, the first stage 260, and the second stage 270 are located. It should be noted that in FIG. 2C the pattern 264 is labeled ABC.

Hereinafter, the detailed configurations and operations of the embossed stamping offset printing apparatus 200 and the offset printing system 201 according to an embodiment of the present invention will be described in detail.

Referring again to FIGS. 2C and 2D, the embossed stamping offset printing apparatus 200 according to the exemplary embodiment of the present invention may have an embossed printing plate 262 having a shape of a pattern 264 to be printed on the substrate 250. It is provided. The ink dispenser 220 mounted on the first gantry 221 and the blanket roll 230 mounted on the second gantry 221 move relative to each other, so that the ink dispenser 220 ink onto the blanket roll 230. Warriors More specifically, the X direction (ie, the forward direction) in which the first gantry 221 approaches the blanket roll 230 along the pair of first linear motion guides 218 by a first driving member (not shown) Go to). Thereafter, the ink dispenser 220 mounted to the first gantry 221 transfers ink onto the blanket roll 230. Alternatively, a blanket roll 230 mounted to the second gantry 231 may approach the ink dispenser 220 along a pair of second linear motion guides 238 by a second drive member (not shown). Move in reverse direction. The ink dispenser 220 then transfers the ink onto the blanket roll 230. In the embodiment shown in FIG. 2A, the ink dispenser 220 may be implemented, for example, with a slit die nozzle (not shown).

When the transfer of the ink onto the blanket roll 230 is completed, the second gantry 231 is embossed printing plate 262 along the pair of second linear motion guides 238 by a second driving member (not shown). Move in the X direction (ie, forward direction) to approach. Thereafter, the ink on the blanket roll 230 is transferred onto the convex portion 212 on the embossed printing plate 262 to form the shape of the pattern 264. When the ink transfer for forming the pattern 264 on the embossed printing plate 262 is completed, the second gantry 231 returns to its original position.

Thereafter, the third gantry 241 is approached by the third drive member (not shown) in the X direction (ie, backward direction) to approach the embossed printing plate 262 along the pair of third linear motion guides 242. Move. In this case, the embossed printing plate 262 and the first stage 260 rotate the first stage 260 in the front-back direction, the left-right direction, and the rotation by the first actuator 266 mounted on the first support member 263. It is aligned in advance by moving in the direction. Thereafter, the stamp head 240 and the embossed printing plate are formed by a pair of alignment cameras 248 mounted on the third gantry 241 and a three-axis alignment device 246 mounted on the stamp head 240. 262 is aligned. To this end, alignment marks (not shown) are formed on the stamp head 240 and the embossed printing plate 262, respectively. More specifically, the position adjustment of the stamp head 240 is performed by the three-axis aligning device 246 which can finely control the movement of the front-back direction (X direction), the left-right direction (Y direction), and the rotation direction. Is done. Thereafter, when the stamp head 240 descends on the embossed printing plate 262 and contacts the embossed printing plate 262, the pattern 264 formed on the embossed printing plate 262 is transferred to the stamp head 240. Thereafter, the third gantry 241 is moved by the third driving member (not shown) in the X direction (ie, the forward direction) to approach the substrate 250 along the pair of third linear motion guides 242. do. Thereafter, the stamp head 240 moves on any one of the multi-facets 252 formed on the substrate 250 (eg, the first chamfer 252a1). In this case, the substrate 250 and the second stage 270 are pre-aligned by the pair of substrate alignment devices 278. Thereafter, the stamp head 240 is aligned with the first chamfer 252a1 by the pair of alignment cameras 248 and the three-axis alignment device 246. It is apparent that the alignment mark (not shown) is formed on the first chamfer 252a1. Thereafter, the stamp head 240 is lowered onto the first chamfer 252a1 so that the pattern 264 formed on the stamp head 240 is printed in a stamping manner with the first chamfer 252a1.

On the other hand, while the stamp head 240 prints the pattern 264 on the first chamfer 252a1, cleaning of residual ink existing on the blanket roll 230 is performed. To this end, the printing plate cleaning device 290 may be used in the embodiment shown in FIG. 2A. The printing plate cleaning device 290 includes a cleaning roll 291 for cleaning the blanket roll 230; And a fixed mounting member 292 on which the cleaning roll 291 is rotatably mounted. When the second gantry 231 moves along the pair of second linear motion guides 238 toward the printing plate cleaning device 290, the cleaning roll 291 cleans the remaining ink on the blanket roll 230. Thereafter, the second gantry 231 is returned to its original position.

Thereafter, the ink dispenser 220 mounted on the first gantry 221 and the blanket roll 230 move relative to each other, and the ink dispenser 220 transfers ink onto the cleaned blanket roll 230. When the transfer of ink onto the blanket roll 230 is completed, the second gantry 231 is moved to the embossed printing plate 262 along the pair of second linear motion guides 238 by a second driving member (not shown). Move in the direction of approach. Thereafter, the ink on the blanket roll 230 is transferred onto the convex portion 212 on the embossed printing plate 262 to form the shape of the pattern 264. When the ink transfer for forming the pattern 264 on the embossed printing plate 262 is completed, the second gantry 231 returns to its original position.

Thereafter, the third gantry 241 moves on the embossed printing plate 262, and alignment between the stamp head 240 and the embossed printing plate 262 is performed. Thereafter, the stamp head 240 descends and contacts the embossed printing plate 262, so that the pattern 264 formed on the embossed printing plate 262 is transferred to the stamp head 240. Thereafter, the stamp head 240 is moved, for example, onto the second chamfer 252a2 on the substrate 250 to align. Thereafter, the stamp head 240 is lowered onto the second chamfer 252a2 so that the pattern 264 formed on the stamp head 240 is printed in a stamping manner with the second chamfer 252a2.

As described above, in the present invention, it is possible to sequentially form the pattern to be formed on the glass substrate by an intaglio or embossed stamping method. Here, the order in which the pattern 264 on the stamp head 240 is printed with the multi-sided 252 on the substrate 250 is pre-programmed, for example, in a controller (not shown). Such a control device is implemented by, for example, a personal computer (PC) or a microprocessor, and the overall operation of the offset printing device 200 and the offset printing system 201 of an intaglio or embossed stamping method according to an embodiment of the present invention. Can be controlled.

Meanwhile, in order to sequentially form the pattern to be formed on the glass substrate in an intaglio or embossed stamping method according to the embodiment of the present invention illustrated in FIGS. 2A to 2, the stamp head 240 and the printing plate 262 may be formed. Align and align the stamp head 240 and each chamfer 252 on the substrate 250. Here, the printing plate 262 includes both the engraved printing plate 262 shown in FIGS. 2A and 2B and the embossed printing plate 262 shown in FIGS. 2C and 2D.

Hereinafter, an alignment apparatus and a method for simultaneously aligning an upper alignment mark and a lower alignment mark according to an embodiment of the present invention will be described in detail.

FIG. 2E illustrates a side view of an alignment apparatus for aligning an upper alignment mark and a lower alignment mark simultaneously according to an embodiment of the present invention. FIG. 2F is a schematic perspective view for explaining an operation of simultaneously aligning an upper alignment mark and a lower alignment mark using an alignment apparatus according to an exemplary embodiment of the present invention illustrated in FIG. 2E. to be. In FIG. 2F, it should be noted that the alignment device according to the exemplary embodiment of the present invention is illustrated with some components omitted. Here, the same gantry 241 is referred to as the second gantry 241 in the embodiment of FIGS. 2A and 2B, and is referred to as the third gantry 241 in the embodiments of FIGS. 2C and 2D, and thus, FIGS. In the embodiment of Figure 2f it will be referred to as a gantry 241 for convenience of description. In addition, the intaglio printing plate 262 shown in FIGS. 2A and 2B and the embossed printing plate 262 shown in FIGS. 2C and 2D are referred to as the printing plate 262 for convenience of description in the embodiments of FIGS. 2E and 2F. Let's do it.

2E and 2F, in the present invention, when the printing plate 262 is positioned on the first stage 260, at least a pair of first lower align marks 269a and / or formed on the printing plate 262. Or 269b and the at least one pair of printing plate alignment cameras 268a and / or 268b confirm the alignment state of the first stage 260 and the printing plate 262. It should be noted that only a pair of printing plate alignment cameras 268a / b are shown in FIG. 2F. In this case, alignment of the first stage 260 and the printing plate 262 may be performed by, for example, a pair of first lower alignment marks 269a and a pair of printing plate alignment cameras 268a, Or by a pair of first lower alignment marks 269a / b and a pair of printing plate alignment cameras 268a / b. Alternatively, the alignment of the first stage 260 and the printing plate 262 may be made by two pairs of first lower alignment marks 269a and 269b and two pairs of printing plate alignment cameras 268a and 268b. have.

In addition, in the present invention, when the substrate 250 is positioned on the second stage 270, at least one pair of second lower alignment marks 257a and / or 257b and at least one pair formed on the substrate 250. The alignment state of the second stage 270 and the substrate 250 is confirmed by the substrate alignment cameras 278a and / or 278b. It should be noted that in FIG. 2F only a pair of substrate alignment cameras 278a / b are shown. In this case, alignment of the second stage 270 and the substrate 250 may be performed by, for example, a pair of second lower alignment marks 257a and a pair of substrate alignment cameras 278a, Or by a pair of second lower alignment marks 257a / b and a pair of substrate alignment cameras 278a / b. Alternatively, the alignment of the second stage 270 and the substrate 250 may be made by two pairs of first lower alignment marks 257a and 257b and two pairs of plate alignment cameras 278a and 278b. have.

Thereafter, at least one pair of upper alignment marks formed on the stamp head 240 by the alignment device 240a for simultaneously aligning the upper alignment mark and the lower alignment mark according to an embodiment of the present invention. At least one pair of top aligns formed on the stamp head 240 or an alignment between 249a and / or 249b and at least a pair of first lower align marks 269a and / or 269b formed on the printing plate 262. Alignment between the in marks 249a and / or 249b and at least a pair of third lower alignment marks 259a and / or 259b formed on each chamfer 252 of the substrate 250 is performed. It is described in detail below.

The alignment device 240a for simultaneously aligning the upper alignment mark and the lower alignment mark according to an embodiment of the present invention is mounted to the gantry 241 to enable in / out movement. At least a pair of bidirectional align cameras 248a and / or 248b for simultaneously detecting at least a pair of upper align marks and at least a pair of lower align marks; At least one pair of driving devices (not shown) for controlling in / out movement of the at least one pair of bidirectional align cameras 248a and / or 248b, mounted on a stamp head 240, The stamp to correct an error according to a detection result of the at least one pair of upper alignment marks and the at least one pair of lower alignment marks detected by the at least one pair of bidirectional alignment cameras 248a and / or 248b. A three-axis alignment device 246 for adjusting the position of the head 240; And a controller for controlling the operation of the at least one pair of bidirectional alignment cameras 248a and / or 248b, the at least one pair of driving devices, and the three-axis alignment device 246 and detecting the error. Not shown). The triaxial align device 246 may preferably be implemented as a 3-axis piezo align device 246. In addition, a cushioning device 243 may be positioned between the stamp head 240 and the triaxial alignment device 246. This cushioning device 243 is not necessarily required to be used as an option.

Referring again to FIGS. 2E and 2F together with FIGS. 2B and 2D, the gantry 241 used in the present invention is specifically a gantry body 241a; And a sliding member 241b provided on the gantry body 241a and moving on the pair of linear motion guides 242. In the present invention, the gantry 241 first moves on the printing plate 262 (4-2) in FIG. 2F. Thereafter, the stamp head 240 mounted through the support frame 247 by the linear servo system 244 and the up-down servo system 245 attached to the gantry 241 is mounted on the printing plate 262. It descends to (① of FIG. 2F). Thereafter, at least one pair of bidirectional alignment cameras 248a and / or 248b are moved in the In direction by at least one pair of driving devices (not shown) and formed on the printing plate 262. At least one pair of first images of the first lower alignment marks 269a and / or 269b and at least one pair of upper alignment marks 249a and / or 249b formed on the stamp head 240 are detected.

2G is a view schematically showing the configuration and operation of the bidirectional align camera of the present invention. More specifically, the bidirectional alignment camera 248 has two first and second half mirrors 248a and 24b therein. An image of the upper alignment mark 249 is detected by the first half mirror 248a and the first light 248c, and a lower alignment mark (by the second half mirror 248b and the second light 248d). 249/269) is detected. The configuration of the bidirectional align camera is conventional in the field of optics, and detailed description thereof will be omitted herein.

As described above, at least one pair of first images detected by at least one pair of bidirectional align cameras 248a and / or 248b are each transmitted to the above-described control device (not shown). The controller checks the alignment between the stamp head 240 and the printing plate 262 by comparing the at least one pair of first images received. Comparison of the at least one pair of first images results in a first error between the at least one pair of first lower alignment marks 269a and / or 269b and the at least one pair of upper alignment marks 249a and / or 249b. In this case, the first error correction value necessary for the alignment is transmitted to the triaxial alignment apparatus 246 mounted on the stamp head 240. Thereafter, the three-axis alignment device 246 finely controls the movement of the stamp head 240 in the front-rear direction (X direction), the left-right direction (Y direction), and the rotational direction in response to the first error correction value. The position of the stamp head 240 is adjusted. In the present invention, since the correction of the first error is made by adjusting the position of the stamp head 240, the first error is based on the first lower alignment marks 269a and / or 269b and the upper alignment marks 249a and / or 269b. Or 249b). In this manner, if the alignment between the stamp head 240 and the printing plate 262 is precisely performed, at least one pair of bidirectional alignment cameras 248a and / or 248b may be provided to at least one pair of driving devices (not shown). To the out direction. Thereafter, the stamp head 240 is lowered to contact the printing plate 262 by the up-down servo system 245. As a result, the pattern 264 is transferred from the printing plate 262 to the stamp head 240.

After that, the stamp head 240 is lifted from the printing plate 262 by the up-down servo system 245 and then moves onto the specific chamfer 252 on the substrate 250 (1-> 2 in FIG. 2F). Thereafter, the stamp head 240 is lowered onto the specific chamfer 252 by the linear servo system 244 and the up-down servo system 245 attached to the gantry 241 (4 in FIG. 2F). ). Thereafter, at least one pair of bidirectional alignment cameras 248a and / or 248b are moved in the In direction by at least one pair of driving devices (not shown) and formed on the specific chamfer 252. Detect a second image of at least a pair of second lower alignment marks 259a and / or 259b of the at least one pair of upper alignment marks 249a and / or 249b formed on the stamp head 240 ( ③) of FIG. 2F. Thereafter, the at least one pair of second images detected by the at least one pair of bidirectional align cameras 248a and / or 248b are each transmitted to the controller. The controller compares the received at least one pair of second images to check the alignment between the stamp head 240 and the specific chamfer 252. A comparison of the at least one pair of second images results in a second error between the at least one pair of second lower alignment marks 259a and / or 259b and the at least one pair of upper alignment marks 249a and / or 249b. In this case, the second error correction value required for the alignment is transmitted to the triaxial alignment apparatus 246 mounted on the stamp head 240. Thereafter, the three-axis alignment device 246 finely controls the movement of the stamp head 240 in the front-back direction (X direction), the left-right direction (Y direction), and the rotation direction in response to the second error correction value. The position of the stamp head 240 is adjusted. In this case, as described above, the second error is preferably measured as the deviation of the upper alignment marks 249a and / or 249b based on the second lower alignment marks 259a and / or 259b. . In this way, if the alignment between the stamp head 240 and the particular chamfer 252 is precisely achieved, at least one pair of bidirectional align cameras 248a and / or 248b is provided with at least one pair of drive units (not shown). It moves to the out direction by. Thereafter, the stamp head 240 is lowered to contact the specific chamfer 252 by the up-down servo system 245. As a result, the pattern 264 is transferred from the stamp head 240 to the specific chamfer 252.

In one embodiment of the present invention described above, the alignment of the stamp head 240 and the printing plate 262 is, for example, a pair of upper alignment marks 249a and a pair of first lower alignment marks 269a. And a pair of bi-directional alignment cameras 248a, or a pair of upper alignment marks 249a / b, a pair of first lower alignment marks 269a / b, and a pair of It may be made by a two-way alignment camera (248a / b). Alternatively, the alignment of the stamp head 240 and the printing plate 262 is two pairs of upper alignment marks 249a and 249b, two pairs of first lower alignment marks 269a and 269b and two pairs of bidirectional directions. It may be made by the alignment cameras 248a and 248b. In addition, in one embodiment of the present invention, the alignment of the stamp head 240 and the specific chamfer 252 is, for example, a pair of upper alignment marks 249a and a pair of second lower alignment marks 259a. ), And a pair of upper alignment marks 249a / b, a pair of second lower alignment marks 259a / b, and a pair of bidirectional alignment cameras 248a By a bidirectional alignment camera 248a / b. Alternatively, the alignment of the stamp head 240 and the particular chamfer 252 is two pairs of upper align marks 249a and 249b, two pairs of second lower align marks 259a and 259b and two pairs. It can be made by the two-way alignment cameras (248a and 248b).

Meanwhile, in the alignment apparatus 240a for simultaneously aligning the upper alignment mark and the lower alignment mark according to the embodiment of the present invention, at least one pair of bidirectional alignment cameras 248a and / or 248b. Is illustratively described as being movably mounted to the gantry 241. However, those skilled in the art will fully appreciate that at least one pair of bidirectional align cameras 248a and / or 248b may be mounted on a separate support member (not shown) instead of the gantry 241. Here, for example, bidirectional alignment cameras 248a and 248b, upper alignment marks 249a and 249b, first lower alignment marks 269a and 269b, and second lower alignment marks 259a and 259b In each of the two pairs, the support members (not shown) must move in the same manner as the gantry 241 moves between the printing plate 262 and each chamfer 252 on the substrate 250. If, for example, the bidirectional alignment cameras 248a and 248b are two pairs, the upper alignment mark 249a or 249b, the first lower alignment mark 269a or 269b, and the second lower alignment mark 259a. Alternatively, when 259b is a pair, the pair of bidirectional alignment cameras 248a are positioned on the printing plate 262 side, and the pair of bidirectional alignment cameras 248b are positioned on the substrate 250 side. Thus, the support member (not shown) is kept fixed, so there is no need to move it.

3A and 3B are flowcharts illustrating an alignment method for aligning an upper alignment mark and a lower alignment mark at the same time according to an embodiment of the present invention.

Referring to FIG. 3A, an alignment method 300 for simultaneously aligning an upper alignment mark and a lower alignment mark according to an embodiment of the present invention includes a) at least one pair of bidirectional alignment cameras 248a and / or At least one pair of first lower alignment marks 269a and / or 269b formed on the printing plate 262 and at least one pair of upper alignment marks 249a and / or 249b formed on the stamp head 240. Detecting a first image of c); b) transmitting the first image to a control device; c) comparing, by the control device, the first image to confirm an alignment state between the stamp head 240 and the printing plate 262; d) a comparison between the at least one pair of first lower alignment marks 269a and / or 269b and the at least one pair of upper alignment marks 249a and / or 249b as a result of the comparison of the at least one pair of first images. When the first error occurs, transmitting, by the controller, the first error correction value necessary for the alignment to the three-axis alignment device 246 mounted on the stamp head 240; And e) the three-axis aligning device 246 finely moves the front-back direction (X direction), the left-right direction (Y direction), and the rotation direction of the stamp head 240 in response to the first error correction value. Controlling the position of the stamp head 240.

Referring to FIG. 3B, an alignment method 300 for simultaneously aligning an upper alignment mark and a lower alignment mark according to an embodiment of the present invention includes a) at least one pair of bidirectional alignment cameras 248a and / or the like. Or at least one pair of upper alignments formed on the stamp head 240 and at least one pair of second lower alignment marks 259a and / or 259b formed on each chamfer 252 of the substrate 250. Detecting a second image of the mark 249a and / or 249b; b) transmitting the second image to a control device; c) checking, by the control device, the alignment state between the stamp head 240 and the respective chamfers 252 by comparing the second image; d) a comparison between the at least one pair of second lower alignment marks 259a and / or 259b and the at least one pair of upper alignment marks 249a and / or 249b as a result of the comparison of the at least one pair of second images. Transmitting a second error correction value necessary for the alignment to the three-axis alignment device 246 mounted on the stamp head 240 when the second error occurs; And e) the three-axis aligning device 246 finely moves the front-back direction (X direction), the left-right direction (Y direction), and the rotation direction of the stamp head 240 in response to the second error correction value. Controlling the position of the stamp head 240.

In the embodiments of FIGS. 3A and 3B described above, the first error or the second error is based on the first lower alignment marks 269a and / or 269b or the second lower alignment marks 259a and / or 259b. It is preferable to measure to the degree of deviation of the upper alignment marks 249a and / or 249b.

As described above, when the alignment device 240a and the alignment method 300 for simultaneously aligning the upper alignment mark and the lower alignment mark according to an embodiment of the present invention, the upper alignment mark and Alignment between the lower alignment marks can be done quickly at the same time.

As various modifications may be made to the constructions and methods described and illustrated herein without departing from the scope of the invention, it is intended that all matter contained in the above description or shown in the accompanying drawings be exemplary, and not intended to limit the invention. It is not. Therefore, the scope of the present invention should not be limited by the above-described exemplary embodiments, but should be defined only in accordance with the following claims and their equivalents.

FIG. 1A is a schematic cross-sectional view of a conventional roll forming apparatus for pattern forming and a pattern forming apparatus of a gravure offset method.

FIG. 1B is a schematic cross-sectional view of a gravure offset type pattern printing roll printing apparatus and a pattern forming apparatus illustrated in FIG. 1A.

FIG. 2A illustrates a plan view of an intaglio stamping offset printing apparatus and a printing system according to an exemplary embodiment of the present invention.

FIG. 2B is a partial side cross-sectional view of an intaglio stamping offset printing apparatus according to an embodiment of the present invention.

2C is a plan view illustrating an offset printing apparatus and a printing system of a relief stamping method according to an exemplary embodiment of the present invention.

FIG. 2D is a partial side cross-sectional view of the offset printing apparatus of the embossed stamping method according to an embodiment of the present invention.

FIG. 2E illustrates a side view of an alignment apparatus for aligning an upper alignment mark and a lower alignment mark simultaneously according to an embodiment of the present invention.

FIG. 2F is a schematic perspective view for explaining an operation of simultaneously aligning an upper alignment mark and a lower alignment mark using the alignment apparatus shown in FIG. 2E.

2G is a view schematically showing the configuration and operation of the bidirectional align camera of the present invention.

3A and 3B are flowcharts illustrating an alignment method for aligning an upper alignment mark and a lower alignment mark at the same time according to an embodiment of the present invention.

Claims (12)

An alignment apparatus for simultaneously aligning an upper alignment mark and a lower alignment mark, At least one pair of bidirectional align cameras mounted on the gantry to enable in / out movement, for simultaneously detecting at least one pair of upper alignment marks and at least one pair of lower alignment marks; At least one pair of driving devices for controlling the in / out movement of the at least one pair of bidirectional alignment cameras: A stamp mounted on a stamp head to correct an error in accordance with a detection result of the at least one pair of upper alignment marks and the at least one pair of lower alignment marks detected by the at least one pair of bidirectional alignment cameras 3-axis alignment device for adjusting the position of the head; And A controller for controlling the operation of the at least one pair of bidirectional alignment cameras, the at least one pair of driving devices, and the three-axis alignment device and detecting the error; Alignment apparatus for aligning the upper alignment mark and the lower alignment mark at the same time comprising a. The method of claim 1, The three-axis alignment device is an alignment device for aligning the upper alignment mark and the lower alignment mark at the same time implemented by a 3-axis piezo align device. The method according to claim 1 or 2, The at least one pair of upper align marks are formed on the stamp head, and the at least one pair of lower align marks are align for simultaneously aligning the upper and lower align marks formed on the printing plate. Device. The method of claim 3, wherein The at least one pair of bidirectional align cameras detect at least one pair of first images of the at least one pair of lower align marks and the at least one pair of upper align marks, and detect the at least one pair of first images. Transmit to the controller, The control device compares the at least one pair of first images to check an alignment state between the stamp head and the printing plate, The control device corrects the first error required for the alignment when a first error occurs between the at least one pair of lower alignment marks and the at least one pair of upper alignment marks as a result of comparing the at least one pair of first images. The position of the stamp head is adjusted by finely controlling the movement of the stamp head in the front-back direction, the left-right direction, and the rotation direction corresponding to the value. Alignment unit for aligning the upper and lower alignment marks simultaneously. The method of claim 4, wherein And the first error is to align the upper alignment mark and the lower alignment mark simultaneously measured by the degree of deviation of the upper alignment mark with respect to the lower alignment mark. The method according to claim 1 or 2, Wherein the at least one pair of upper alignment marks are formed on the stamp head, and the at least one pair of lower alignment marks simultaneously aligns the upper and lower alignment marks formed on each chamfer of the substrate. Alignment device for. The method of claim 6, The at least one pair of bidirectional align cameras detects at least one pair of second images of the at least one pair of lower align marks and the at least one pair of upper align marks, and detects the at least one pair of second images. Transmit to the controller, The control device compares the at least one pair of second images to check an alignment state between the stamp head and each chamfer, The control device corrects the second error required for the alignment when a second error occurs between the at least one pair of lower alignment marks and the at least one pair of upper alignment marks as a result of comparing the at least one pair of second images. The position of the stamp head is adjusted by finely controlling the movement of the stamp head in the front-back direction, the left-right direction, and the rotation direction corresponding to the value. Alignment apparatus for aligning an upper alignment mark and a lower alignment mark at the same time. The method of claim 7, wherein And the second error is to align the upper alignment mark and the lower alignment mark simultaneously measured by the degree of deviation of the upper alignment mark with respect to the lower alignment mark. An alignment method for simultaneously aligning an upper alignment mark and a lower alignment mark, a) detecting at least a pair of first lower alignment marks formed on the printing plate and a first image of at least a pair of upper alignment marks formed on the stamp head by at least one pair of bidirectional alignment cameras; b) transmitting the first image to a control device; c) the control device comparing the first image to confirm an alignment state between the stamp head and the printing plate; d) when a first error occurs between the at least one pair of first lower alignment marks and the at least one pair of upper alignment marks as a result of the comparison of the at least one pair of first images, the controller is required to align; Transmitting a first error correction value to a three-axis alignment device mounted on the stamp head; And e) adjusting the position of the stamp head by finely controlling the movement of the stamp head in the front-back direction, the left-right direction, and the rotation direction in response to the first error correction value. Alignment method for simultaneously aligning the upper alignment mark and the lower alignment mark comprising a. The method of claim 9, And the first error is to align the upper alignment mark and the lower alignment mark simultaneously measured by the degree of deviation of the upper alignment mark with respect to the first lower alignment mark. An alignment method for simultaneously aligning an upper alignment mark and a lower alignment mark, a) at least one pair of bi-directional alignment cameras detecting at least a pair of second lower align marks formed on each chamfer of the substrate and a second image of at least one pair of upper align marks formed on the stamp head ; b) transmitting the second image to a control device; c) the control device comparing the second image to confirm an alignment state between the stamp head and each chamfer; d) when a second error occurs between the at least one pair of second lower alignment marks and the at least one pair of upper alignment marks as a result of the comparison of the at least one pair of second images, the controller is required to align; Transmitting a second error correction value to a three-axis alignment device mounted on the stamp head; And e) adjusting, by the three-axis alignment device, the position of the stamp head by finely controlling the movement of the stamp head in the front-back direction, the left-right direction, and the rotational direction in response to the second error correction value. Alignment method for simultaneously aligning the upper alignment mark and the lower alignment mark comprising a. The method of claim 11, And the second error is to align the upper alignment mark and the lower alignment mark simultaneously measured by the degree of deviation of the upper alignment mark with respect to the second lower alignment mark.

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