TWI644802B - Printing method and printing apparatus - Google Patents

Abstract

A printing method and a printing apparatus are disclosed, the printing method comprising: respectively printing a position correction pattern on a plurality of unit cells of a glass for correction; measuring two or more from a first side of the glass for correction And a distance of one or more points on the second side connected to the first side to one or more predetermined position correction patterns of the plurality of position correction patterns; based on the measured distance, calculated for correction The amount of deviation of the glass from its fixed position, and the position information is corrected to a fixed position as much as the deviation amount; and the mother glass is supplied to the corrected position, and the color pattern is separately printed on the unit cell of the mother glass. Thus, even without any additional process for correcting printing errors, it is possible to correct printing errors more simply.

Description

Printing method and printing device

The invention relates to printing methods and printing devices, and more particularly to printing methods and printing devices that are capable of correcting printing errors in a simpler and more precise manner using a simplified process.

The touch screen is a screen equipped with a special input device to touch the screen with a finger to receive position input.

The touch screen does not use a keyboard, but has a configuration in which when a person's finger or object touches a specific font or position displayed on the screen, the touch screen recognizes the location via the screen image and directly receives the data to be stored therein. Specific software to actually process the data.

Fig. 1 is a view showing an image display device (mobile phone) having a touch panel, wherein a display portion means a portion where an image is displayed, and a non-display portion means a peripheral portion where an image is not displayed. Such a non-display portion, which is the most important layer seen by the user, includes a non-display portion pattern formed thereon to prevent the lower line from being seen by the user.

Such non-display portion patterns are mostly printed by a screen printing method.

The screen printing method comprises the following printing method: contacting the glass with a screen mask provided with pattern holes, the pattern holes corresponding to the printed portions of the paste; and supplying a paste on the screen mask to allow the doctor blade Sliding and moving by scraper movement to print the paste on the glass via the pattern holes.

In the example of such a screen printing method, when the blade moves on the screen of the mask, the screen hangs down, and the position at which the paste falls can vary depending on the screen material, the screen size, or the like. Therefore, the accuracy of the printing position is lowered, causing an error between the actual portion to be printed and the position where the paste is dropped.

Recently, in order to achieve process stability and improve process efficiency, a process of simultaneously forming a non-display portion pattern on a plurality of individual unit lattices of a mother glass having a large area has been proposed. In this example, the problem of reduced print position accuracy becomes greater.

Therefore, it is necessary in the art to correct printing errors. As a method of correcting a printing error, a method including forming a transparent electrode layer on a display portion to sense a touch, obtaining positional information on a formed transparent electrode layer via an exposure device, and based on the obtained method has been proposed. Location information to control the position of the mother glass.

However, in order to carry out the above process, it is necessary to dry the non-display portion pattern and further perform a photoresist process including coating photoresist, exposure, development, etching, removal of photoresist, and the like, resulting in a large increase in overall process time and process efficiency. Significantly lower.

A screen printing system that has undertaken the above problems is disclosed in Korean Patent Publication No. 2011-113017.

Accordingly, it is an object of the present invention to provide a printing method that minimizes printing errors when forming a color pattern on a separate unit cell of a mother glass.

Another object of the present invention is to provide a printing method capable of maximizing the process efficiency of a process for forming a color pattern on a single unit cell of a mother glass.

Another object of the present invention is to provide a printing method capable of minimizing printing errors in a simpler and more precise manner by adjusting a seat on which a mother glass is placed when a color pattern is formed on a single unit cell of a mother glass. Rather than changing the position of the printing device during the correction of the position to reduce printing errors.

The above objects of the present invention will be achieved by the following features:

(1) A printing method comprising: printing a position correction pattern on a plurality of unit cells of a glass for correction, respectively; measuring two or more points on a first side of the glass for correction and Calculating the distance of one or more points on the second side of the connection to one or more of the plurality of position correction patterns; calculating the amount of deviation of the glass for correction from the fixed position based on the measured distance And correcting the position information to a fixed position as much as the deviation amount; and supplying the mother glass to the correction position, and respectively printing the color pattern on the plurality of unit cells of the mother glass.

(2) The printing method according to (1) above, wherein two or more points on the first side are on the first side, and one or more points on the second side are on the second side.

(3) The printing method according to (1) above, wherein the two or more points on the first side and the one or more points on the second side connected to the first side respectively have a unit lattice The shortest line segment, which is perpendicular to the unit cell and is connected to the position correction pattern corresponding to the unit cell.

(4) The printing method according to (1) above, wherein the one or more predetermined position correction patterns are different from each other.

(5) The printing method according to (1) above, wherein one of two or more points of the first side of the glass for correction is measured with one of predetermined position correction patterns different from each other a distance between the position correction patterns to calculate a distance deviation of the glass for correction from the fixed position in the second side direction and an angular deviation from the fixed position in the first side direction, and measure for a distance between one or more points on the second side of the corrected glass and a predetermined position correction pattern in the predetermined position correction pattern different from each other to calculate a fixed position of the glass for correction in the first side direction Distance deviation.

(6) The printing method according to (1) above, wherein a distance between two points of the first side of the glass for correction and a nearest one of the position correction patterns different from each other is measured to calculate a deviation of the distance of the glass for correction from the fixed position in the second direction, and an angular deviation from the fixed position in the first side direction, and measuring a point on the second side of the glass for correction and the nearest The distance between the position correction patterns is calculated to calculate the distance deviation of the glass for correction from the fixed position in the first side direction.

(7) The printing method according to (1) above, wherein the position correction pattern and the color pattern are formed by screen printing.

(8) The printing method according to (1) above, wherein the position correction pattern and the color pattern are formed by screen printing, and the printing of the position correction pattern, the measurement of the distance, and the measurement of the position correction pattern are performed immediately after the replacement of the screen printing mask. Correction of location information.

(9) The printing method according to (1) above, wherein the position correction pattern and the color pattern are formed by screen printing, and the printing of the position correction pattern is performed in place of each cycle of the screen printing mask. The measurement and the correction of the position information are performed at least once.

(10) A printing apparatus comprising: a table supporting a glass for correction supplied from a supply unit; and a printing unit separately printing on a plurality of unit cells of the glass for correction provided on the stage a position correction pattern; the sensing unit configured to measure at most two or more points on the first side of the glass for correction and one or more points on the second side connected to the first side The distance of one or more predetermined position correction patterns in the position correction patterns; the position calculation unit is configured Calculating the amount of deviation of the glass for correction from the fixed position based on the distance measured by the sensing unit; and the pedestal correction unit configured to move the pedestal as much as the amount of deviation calculated by the position calculation unit to set the pedestal Place it in a fixed position.

(11) The printing apparatus according to (10) above, wherein two or more points on the first side are located on the first side, and one or more points on the second side are located on the second side.

(12) The printing apparatus according to (10) above, wherein the one or more points on the first side and the one or more points on the second side connected to the first side respectively have a unit crystal The shortest line segment of the grid, the shortest line segment being perpendicular to the unit cell and connected to the position correction pattern corresponding to the unit cell.

(13) The printing apparatus according to (10) above, wherein the one or more predetermined position correction patterns are different from each other.

(14) The printing apparatus according to (10) above, wherein the sensing unit measures each of two or more points of the first side of the glass for correction with a plurality of predetermined position correction patterns different from each other a distance between a predetermined position correction pattern, and a distance between a point on the second side and one of the plurality of predetermined position correction patterns different from each other, and the position calculation unit calculates for correction The deviation of the distance of the glass from the fixed position in the direction of the first side and the direction of the second side, and the angular deviation from the fixed position in the direction of the first side.

(15) The printing apparatus according to (10) above, wherein the sensing unit measures one of the plurality of predetermined position correction patterns different from each other at two points of the first side of the glass for correction a distance between the distance and a point on the second side and the predetermined position correction pattern, and the position calculation unit calculates the distance of the glass for correction from the fixed position in the first side direction and the second side direction Deviation, and angular deviation from the fixed position in the direction of the first side.

(16) The printing apparatus according to (10) above, wherein the printing unit is a screen printing sheet yuan.

According to the present invention, even without any additional process for correcting printing errors, it is possible to more easily correct printing errors to maximize the process efficiency of the color pattern forming process.

In conventional screen printing methods, it is difficult to change the position of the printed mask. However, according to the present invention, the printing error is corrected by controlling the seat on which the glass piece is placed instead of the printed mask. Therefore, it is possible to correct errors in the printing position in a simpler and more precise manner, thereby being particularly usefully applied to the screen printing method.

100‧‧‧ unit lattice

200‧‧‧ two or more points

300‧‧‧ one or more points

400‧‧‧ position correction pattern

The above and other objects, features and other advantages of the present invention will become more apparent from the aspects of the appended claims <RTIgt Figure 2 is a plan view of a glass sheet including a plurality of unit cells defined thereon; and Figure 3 illustrates the first side of the glass for correction on which a plurality of unit cells are defined Two or more points and one or more points on the second side connected to the first side; and Fig. 4 is a block diagram illustrating the technical structure of the printing apparatus in the present invention.

The present invention discloses a printing method and a printing apparatus, the printing method comprising: respectively printing a position correction pattern on a plurality of unit cells of a glass for correction; measuring two or more on a first side of the glass for correction a plurality of points and a distance of one or more points connected to the second side of the first side to one or more of the plurality of position correction patterns; based on the measured distance, Calculating the amount of deviation of the glass for correction from its fixed position, and correcting the position information to a fixed position as much as the deviation amount; and supplying the mother glass to the correction position, and printing the color on the unit cell of the mother glass respectively pattern. Thus, even without any additional process for correcting printing errors, it is possible to correct the printing error more simply.

In an example of a surface glass that can be applied to a display, a touch panel, etc., generally, a plurality of unit cells are formed on the mother glass, and then the mother glass is cut into individual unit crystals to be fabricated and used as separate products. grid.

In order to form a unit cell, patterns are respectively formed on a plurality of unit cells defined on the mother glass, followed by formation of a transparent electrode layer which can be applied to a touch sensor or the like.

Such a pattern is usually printed by a screen printing method. In order to locate the substrate to be printed at the corrected position, screen printing does not use a device that automatically controls the position of the mother glass. Therefore, in order to correct the printing error, a series of processes including adjusting the glass position after printing and then printing again should be continuously performed until the position of the substrate is corrected to its corrected position.

In addition, the screen panel should be replaced with new ones at intervals of several hours, and after replacement, change the position of the screen panel. Therefore, the above process should be performed again while repeatedly performing printing, checking for printing errors, correction, printing, checking for printing errors, or the like.

Finally, after forming the transparent electrode layer for detecting the touch on the display portion, the position information of the formed transparent electrode layer plate can be obtained through the exposure device, and then the mother glass can be corrected based on the obtained position information. The position, thus achieving a correction.

However, in order to carry out the above process, it is necessary to dry the printed pattern and further perform a photoresist process including coating of photoresist, exposure, development, etching, removal of photoresist, and the like, which causes a large amount of overall process time. Increases and a significant increase in process efficiency.

However, since the printing error is corrected immediately after the correction of the pattern at the printing position, the screening method of the present invention can significantly improve the process yield, thereby eliminating the need for a further process for error correction.

Hereinafter, a printing method according to an embodiment of the present invention will be described in more detail with reference to the accompanying drawings.

First, the position correction pattern 400 is printed on each of the plurality of unit cells 100 of the glass for correction.

Figure 2 is a plan view of a glass on which a plurality of unit cells are defined. Such a glass for correction includes a plurality of unit cells 100 defined thereon, and the position correction patterns 400 are printed on the plurality of unit cells 100, respectively.

As described below, the glass for correction is used to correct the position of the mother glass to supply the glass at a fixed position.

Herein, the fixed position means that the position of the plurality of unit cells 100 defined on the glass or mother glass for correction conforms to a specific portion having the respective position correction pattern 400 or color pattern formed thereon.

According to the printing method of the present invention, in order to calculate the amount of deviation of the glass for correction from the fixed position, two or more points on the first side of the glass for correction and the number connected to the first side are determined The distance of one or more points on the two sides to one or more predetermined position correction patterns in the plurality of position correction patterns 400.

Figure 3 schematically shows the measurement from two or more points on the first side of the glass for correction and one or more points on the second side connected to the first side to the above The distance of one or more predetermined position correction patterns of the plurality of position correction patterns, and the glass position for correction The process of setting.

Fig. 3(a) illustrates a process for calculating the amount of deviation of the glass for correction from a fixed position, wherein the first side may be the long side or the short side of the glass for correction. Further, the second side is connected to the first side, and when the first side is the long side, the second side may be the short side. On the other hand, when the first side is a short side, the second side may be a long side.

The position of the two or more points on the first side is not particularly limited, but for example, the two points on the first side may be located on the first side. When calculating the amount of deviation of the glass for correction from the fixed position, if the angle relationship is considered for calculation, the point can be positioned on the first side. Further, in addition to this, when the positional relationship other than the positional relationship is considered to calculate the deviation amount, the two points may be separated from each other by the first side at intervals in the second side direction.

The two or more points on the first side are preferably located on the first side without regard to the angle or positional relationship between the points to more simply calculate the amount of deviation of the glass for correction from the fixed position. Similarly, one or more points on the second side may also be located on the second side.

Hereinafter, the following description will be given with reference to an example in which two or more points on the first side are located on the first side and one or more points on the second side are on the second side, however, Not limited to this.

If two or more points 200 of the first side are located on the first side, the positions at these are not particularly limited. Preferably, regardless of the angle thereof, and in order to easily measure the distance to the position correction pattern 400, two or more points may be located at a position where the shortest line segment to the unit cell 100 is perpendicular to the corresponding unit lattice 100 and connected to the position correction pattern 400 corresponding to the unit cell 100 described above.

Likewise, one or more points 300 on the second side may be located at a position where the shortest line segment to the unit cell 100 is perpendicular to the corresponding unit cell 100 and corresponds to the unit cell 100 described above. The position correction pattern 400 is connected.

One or more points 200 on the first side of the glass for correction and one or more points 300 on the second side connected to the first side may be measured or one of the plurality of position correction patterns 400 The distance of more predetermined position correction patterns.

The one or more position correction patterns 400 of the object determined to be the distance to be measured may be the same or different patterns from each other.

For example, it is possible to separately measure the correction pattern from two or more points 200 on the first side of the glass for correction and one or more points 300 on the second side connected to the first side to a predetermined position 400 distance.

Alternatively, it is possible to measure the distance between each of the two or more points of the first side of the glass for correction and one of the predetermined position correction patterns 400 different from each other, or measure the glass for correction. The distance between one or more points 300 on the second side and one of the predetermined position correction patterns 400 different from each other.

Further, when the position correction pattern 400 of the object formed to be measured is formed on the glass for correction, the position thereof is not particularly limited, but the pattern may be the first side of the glass closest to the correction. Two or more points 200 and a position correction pattern 400 of one or more points 300 on the second side connected to the first side.

The two or more points 200 on the first side of the glass for correction may be two, three, four or more. As described below, even two points may be sufficient to calculate the distance deviation of the glass for correction from the fixed position in the second side direction and the angular deviation from the fixed position in the first side direction. In addition, if there are three or more points, the above values can be calculated more accurately.

Likewise, one or more points on the second side of the glass for correction may be one, two, three or more. As described below, even one point is sufficient to calculate the glass for correction The deviation from the fixed position in one direction. Furthermore, if there are two or more points, the above values can be calculated more accurately.

Meanwhile, thereafter, with reference to the distance between each of the two or more points in which the first side of the glass for correction is measured and one of the predetermined position correction patterns 400 different from each other, while measuring The following description is given by way of an example of the distance between the previous point on the second side and the one predetermined position correction pattern 400, however, it is not limited thereto.

After measuring the distance between each of the two or more points of the first side of the glass for correction and one of the predetermined position correction patterns 400 different from each other, the measured distance may be used to calculate for correction The deviation of the distance of the glass from the fixed position in the second direction and the angular deviation from the fixed position in the first side direction.

Similarly, after measuring the distance between a point on the second side of the glass for correction and a predetermined position correction pattern 400, the measured distance can be used to calculate the glass for correction in the first side direction Deviation from the fixed position.

As much as the deviation distance from the fixed position of the glass used for correction, the position information can be corrected to a fixed position.

Herein, the position information means information on the position of the glass for correction, or information on the position of any element (for example, a seat) on which the glass for correction is set. Therefore, correcting the position information to the fixed position means correcting the position of the glass or element for correction to match the plurality of unit cells 100 of the glass for correction having the portion on which the respective position correction pattern 400 is formed.

Depending on the measured distance, a distance deviation of the glass for correction from the fixed position in the first side direction and the second side direction, and an angular deviation in the first side direction can be obtained. Therefore, when the glass for correction is moved as much as the deviation distance in the first side direction and the second side direction, Thereafter, when such a condition that the glass for correction is rotated as much as the angular deviation in the direction opposite to the deviation angle is applied as the reference position information, the further provided mother glass position can be corrected to the fixed position.

Thereafter, the mother glass is supplied to the corrected position, and the unit cell 100 of the mother glass may have a color pattern printed thereon, respectively.

As shown in Fig. 3(b), according to such correction as described above, the position information can be corrected to a fixed position, and the mother glass is supplied to the corrected position so as to be at a fixed position.

Since the unit cell 100 of the mother glass has a color pattern printed thereon, a color pattern can be formed without printing errors.

The printing method of the present invention may include any conventional printing process known in the art, such as, for example, roll printing, screen printing, gravure printing, lithography, and the like, which are not particularly limited. However, as described above, screen printing suffers from deterioration in printing accuracy and requires a complicated process to correct printing errors. Therefore, when the present invention is applied to screen printing, the advantage of reducing printing errors by a simpler process can be maximized. According to the screen printing, the position correction pattern 400 and the color pattern are preferably formed.

According to the screen printing, the printing of the position correction pattern, the distance measurement, and the compensation of the position information can be performed immediately after the replacement of the screen printing mask. If the screen printing mask is replaced, the screen position may change and cause a printing error again. Therefore, it is preferable to perform position correction immediately after replacing the printed mask. Moreover, such position correction can be performed at least once in each cycle that replaces the screen printing mask.

Further, the present invention provides a printing apparatus for embodying the above printing method.

As shown in the block diagram of FIG. 4, the printing apparatus of the present invention includes a pedestal, a printing unit, a sensing unit, a position calculating unit, and a pedestal correcting unit.

The pedestal supports the glass supplied for correction from the supply unit.

The glass used for calibration can be used to correct the position of the glass to provide the mother glass to its fixed position.

The glass for correction can include a plurality of unit cells 100 defined thereon.

When the position information is corrected and set to a fixed position by the printing error correction described below, the mother glass can be further supplied from the supply unit.

The printing unit respectively prints the position correction pattern 400 on a plurality of unit cells 100 of the glass for correction provided on the table.

When the position information is corrected and set to a fixed position by the printing error correction described below, the printing unit respectively prints the color pattern on the plurality of unit cells 100 of the mother glass disposed on the table.

The sensing unit detects and measures two or more points from the first side of the glass for correction and one or more points 300 on the second side connected to the first side to the plurality of position correction patterns The distance of one or more predetermined position correction patterns 400 in 400.

Based on the distance measured by the sensing unit, the position calculating unit may calculate the amount of deviation of the glass for correction from the fixed position.

Further, the pedestal correcting unit moves the pedestal as much as the amount of deviation calculated by the position calculating unit to position the glass for correction at a fixed position. Further, even after the glass for correction has been moved, the movement of the pedestal can be performed by the position information alone.

Two or more points on the first side of the glass for correction and one or more points 300 on the second side connected to the first side; and one of the objects defined as the distance to be measured The details of the more or more position correction patterns 400 may be the same as the printing process described above and, therefore, will not be described.

Similarly, the distance measurement in the sensing unit, the deviation amount calculation of the glass for correction from the fixed position, and the position correction of the glass for correction in the table correction unit may be the same as the above-described printing process, and therefore, Not described.

If the printing unit is a screen printing unit, the advantage of correcting printing errors by means of a simpler technical configuration of the printing device according to the invention can be exhibited to the greatest extent.

Claims (16)

A printing method comprising: printing a position correction pattern on a plurality of unit cells of a glass for correction; measuring two or more points from a first side of the glass for correction and a distance from one or more points on a second side connected to the first side to one or more predetermined position correction patterns in the plurality of position correction patterns; calculating the usage based on the measured distance Correcting a deviation of the corrected glass from a fixed position and correcting the position information to the fixed position as much as the deviation; and supplying a mother glass to the corrected position and in the mother glass A color pattern is printed on each of the plurality of unit cells. The printing method of claim 1, wherein the two or more points on the first side are located on the first side, and the one or more points on the second side are located in the The second side. The printing method of claim 1, wherein the two or more points on the first side and the one or more points on the second side of the first side connection have respectively And a shortest line segment of the unit lattice, the shortest line segment being perpendicular to the unit lattice and connected to the position correction pattern corresponding to the unit lattice. The printing method of claim 1, wherein the one or more predetermined position correction patterns are different from each other. The printing method of claim 1, wherein each of the plurality of predetermined position correction patterns different from each other at each of two or more points of the first side of the glass for correction is predetermined A distance between the position correction patterns is measured to calculate the glass for correction a distance deviation from the fixed position in the direction of the second side and an angular deviation from the fixed position in the direction of the first side, and one or more on the second side of the glass for correction A distance between the plurality of points and the one of the plurality of predetermined position correction patterns different from each other is measured to calculate the glass for correction from the fixed position in the direction of the first side This distance deviation. The printing method of claim 1, wherein the two points of the first side of the glass for correction and one of the plurality of position correction patterns different from each other are closest to each other a distance therebetween is measured to calculate the distance deviation of the glass for correction from the fixed position in the direction of the second side and the angular deviation from the fixed position in the direction of the first side, and A distance between a point on the second side of the glass for correction and the nearest position correction pattern is measured to calculate the glass for correction from the fixed position in the direction of the first side The distance deviation. The printing method according to claim 1, wherein the position correction pattern and the color pattern are formed by screen printing. The printing method according to claim 1, wherein the position correction pattern and the color pattern are formed by screen printing, and after the replacement of the screen printing mask, the printing of the position correction pattern is performed immediately, The measurement of the distance and the correction of the position information. The printing method of claim 1, wherein the position correction pattern and the color pattern are formed by screen printing, and The printing of the position correction pattern, the measurement of the distance, and the correction of the position information are performed at least once in each cycle in place of the screen printing mask. A printing apparatus comprising: a stage supporting a glass for correction supplied from a supply unit; and a printing unit on a plurality of unit cells of the glass for correction disposed on the stage Separately printing a position correction pattern; a sensing unit configured to measure two or more points on a first side of the glass for correction and a second side connected to the first side One or more points to a distance of one or more predetermined position correction patterns of the plurality of position correction patterns; a position calculation unit configured to calculate the distance based on the distance measured by the sensing unit a deviation amount of the glass for correction from a fixed position; and a table correction unit configured to move the stage as much as the amount of deviation calculated by the position calculation unit to place the stage in the fixed position . The printing device of claim 10, wherein the two or more points on the first side are located on the first side, and one or more points on the second side are located in the first Two sides. The printing device of claim 10, wherein the two or more points on the first side and the one or more points on the second side connected to the first side are respectively There is a shortest line segment to the unit lattice, the shortest line segment being perpendicular to the unit lattice and connected to the position correction pattern corresponding to the unit lattice. The printing apparatus according to claim 10, wherein the one or more predetermined position correction patterns are different from each other. The printing apparatus according to claim 10, wherein the sensing unit measures a plurality of predetermined position corrections at different points of the two or more points of the first side of the glass for correction a distance between a predetermined position correction pattern in the pattern, and a distance between the one point on the second side and the one of the plurality of predetermined position correction patterns different from each other, and the distance The position calculating unit calculates a distance deviation of the glass for correction from the fixed position in the direction of the first side and the direction of the second side, and an angle from the fixed position in the direction of the first side deviation. The printing apparatus according to claim 10, wherein the sensing unit measures one of a plurality of predetermined position correction patterns different from each other at two points of the first side of the glass for correction a distance between the correction patterns, and a distance between a point on the second side and the predetermined position correction pattern, and the position calculation unit calculates a direction of the glass for correction on the first side and The distance deviation from the fixed position in the direction of the second side and the angular deviation from the fixed position in the direction of the first side. The printing device of claim 10, wherein the printing unit is a screen printing unit.