JP2005329361A - Paste coating apparatus and method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a paste coating apparatus improved in the operating rates of coating nozzles. <P>SOLUTION: The paste coating apparatus is equipped with a mounting table 5 wherein a substrate is mounted, a plurality of coating nozzles 12a-12b arranged on positions facing to the mounting table along in a predetermined direction, and coating paste on the substrate, driving sources 4, 6, 10a-10d for relatively driving the mounting table and coating nozzles in the X, Y and θ directions, and a controller 21 simultaneously coating the paste by the plurality of coating nozzles on one single display area provided on the substrate. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a paste coating apparatus and a coating method for applying a paste to a substrate.

  For example, as is well known, a liquid crystal display panel is formed by bonding two transparent glass substrates with a sealant at intervals of the order of μm. In the case of a multi-sided substrate, a plurality of display areas are formed by circuit patterns on the substrate, and electrodes for connecting with each other's circuit pattern (hereinafter referred to as transfer electrodes) are formed on one substrate and the other substrate. ) Are provided opposite to each other. The transfer electrodes are usually provided in the same arrangement pattern at the periphery of each display area.

  In order to electrically connect the transfer electrodes formed on the pair of substrates, a conductive paste is applied to the transfer electrodes of one substrate. The conductive paste is applied to the substrate by a paste application device. In this paste coating apparatus, a plurality of coating nozzles are arranged along a predetermined direction. When the conductive paste is applied to a multi-chamfer substrate, the number of application nozzles is set in consideration of the maximum number of chamfers planned. For example, when the maximum number of chamfers in the arrangement direction of the application nozzles is four, four application nozzles are provided.

  Conventionally, when a conductive paste is applied by such a paste application apparatus, application is performed using one application nozzle for one display area. That is, the substrate and the application nozzle are relatively driven in the X and Y directions so that the application nozzle relatively moves along the periphery of the display area, and the predetermined area in the periphery of the display area The conductive paste is applied at a predetermined pitch.

  By the way, in the paste coating apparatus, there is a case where the conductive paste is applied to not only one type of substrate but also different size substrates. Therefore, when the substrate sizes are different, the number of display areas along the arrangement direction of the coating nozzles formed on the substrate may be smaller than the number of coating nozzles.

  For example, in a paste application device in which four application nozzles are arranged, when the number of chamfers in the arrangement direction of the application nozzles, that is, the number of display areas along the arrangement direction is two, the conductive paste is applied to the substrate. In other words, the conductive paste was applied by two of the four application nozzles.

  For this reason, the remaining two application nozzles out of the four application nozzles are suspended, which may cause a reduction in the operation rate of the application nozzles.

  In addition, since one application nozzle is relatively moved along the peripheral portion of the display area and the conductive paste is applied to the display area at a predetermined position in the peripheral area, the application nozzle is set in the display area. It took a long time to move it relatively along the periphery, and productivity was sometimes reduced.

  An object of the present invention is to provide a paste coating apparatus and a coating method capable of improving the operating rate and productivity of a plurality of coating nozzles.

The present invention is a paste application apparatus for applying a paste to a display area formed on a substrate,
Substrate support means on which the substrate is placed;
A plurality of application nozzles arranged along a predetermined direction at positions facing the substrate placed on the substrate support means and applying the paste to the substrate;
Driving means for relatively driving the substrate and the coating nozzle in the surface direction of the display area;
And a control unit that applies the paste to a display area provided on the substrate by a plurality of application nozzles.

The present invention is a paste application apparatus for applying a conductive paste to the periphery of a display area formed on a substrate,
Substrate support means on which the substrate is placed;
A plurality of application nozzles arranged along a predetermined direction at positions facing the substrate placed on the substrate support means and applying the conductive paste to the substrate;
Driving means for relatively driving the substrate and the coating nozzle in the surface direction of the display area;
There is provided a paste coating apparatus comprising: a control unit that applies the conductive paste to a single display region provided on the substrate by a plurality of coating nozzles.

  When the display area is rectangular, the control means applies the conductive paste along one side parallel to the arrangement direction of the application nozzle in the display area, and then rotates the substrate by 90 degrees to It is preferable to control the application nozzle and the driving means so that the conductive paste is applied along the other side intersecting with one side.

The present invention is a paste application method for applying a paste to a display area formed on a substrate,
Placing the substrate on the substrate support means;
Relatively driving the substrate placed on the substrate support means and a plurality of application nozzles arranged along a predetermined direction at positions facing the substrate in the surface direction of the display region;
And a step of applying the paste by a plurality of application nozzles to one display area provided on the substrate while relatively driving the substrate and the application nozzle. It is in.

The present invention is a paste application method for applying a conductive paste to the periphery of a display area formed on a substrate,
Placing the substrate on the substrate support means;
Relatively driving the substrate placed on the substrate support means and a plurality of application nozzles arranged along a predetermined direction at positions facing the substrate in the surface direction of the display region;
Applying the conductive paste by a plurality of application nozzles to one display area provided on the substrate while relatively driving the substrate and the application nozzle. It is in the application method.

When the display area is rectangular, the step of applying the conductive paste to a location along one side parallel to the direction of arrangement of the application nozzle of the display area;
Preferably, the method includes a step of rotating the substrate by 90 degrees and applying a conductive paste to a location along the other side of the display region that intersects the one side.

  According to the present invention, since the paste is applied to one display area by a plurality of application nozzles, it is possible to improve the operation rate of the application nozzles.

An embodiment of the present invention will be described below with reference to the drawings.
FIG. 1 is a perspective view showing a schematic configuration of a paste applying apparatus, which includes a rectangular parallelepiped base 1. A base table 2 is provided at the central portion of the upper surface of the base 1. The base table 2 is provided with a θ table 3. The θ table 3 is driven along the Y direction by a Y drive source 4 provided on the base table 2. The X, Y, and Z directions are directions indicated by arrows in FIG.

  A mounting table 5 is provided on the θ table 3. The mounting table 5 is driven in a rotational direction on a horizontal plane by a θ driving source 6 (shown in FIG. 2) provided on the side surface of the θ table 3. Therefore, the mounting table 5 is driven in the Y direction and the θ direction. The θ table 3 and the mounting table 5 are provided with their centers aligned.

  A gate-shaped support 7 is provided on the upper surface of the base 1 so as to straddle the base table 2. The horizontal intermediate portion 7a of the support 7 is along the X direction, and an X guide body 8 is provided along the longitudinal direction on one side surface thereof. The X guide body 8 is provided with first to fourth X movable bodies 9 a to 9 d that are movable in the X direction along the X guide body 8.

  A magnet (not shown) constituting a linear motor is provided on the front surface of the X guide body 8, and coils (not shown) are opposed to the magnets in the first to fourth X movable bodies 9 a to 9 d, respectively. Is provided. That is, each X movable body 9a to 9d is driven in the X direction along the X guide body 8 by the magnet and the coil. As shown in FIG. 2, linear motors that drive the first to fourth X movable bodies 9a to 9d in the X direction are first to fourth X drive sources 10a to 10d.

  A mounting portion 11 that is movable in the Z direction (vertical direction) is provided on the front surfaces of the first to fourth X movable bodies 9a to 9d. Each attachment portion 11 is provided with a syringe 13 having first to fourth application nozzles 12a to 12d at the tips. As shown in FIG. 2, a compressed gas supply pipe 15 is connected to each syringe 13 via an open / close valve 14, and an adjustment valve (not shown) is driven up and down to tip the application nozzles 12a to 12d. An actuator 16 is provided for adjusting the opening degree.

  First to fourth Z drive sources 17a to 17d are provided at upper ends of the first to fourth X movable bodies 9a to 9d, respectively. Each Z drive source 17a-17d drives the attachment portion 11 in the Z direction. Thereby, the height position of the tip of the application nozzles 12a to 12d provided in each attachment portion 11, that is, the position in the Z direction can be adjusted.

  A control device 21 is provided on one side of the substrate 1. The control device 21 controls driving of the Y drive source 4, the θ drive source 6, the first to fourth X drive sources 10a to 10d, and the first to fourth Z drive sources 17a to 17d. Yes.

  As shown in FIG. 2, an imaging signal from the imaging camera 22 is input to the control device 21. This imaging camera 22 images the substrate 23 constituting the liquid crystal display panel supplied to the table 5 described above. Coordinates of a plurality of alignment marks (not shown) provided on the substrate 23 placed on the placement table 5 are calculated based on the imaging signal from the imaging camera 22.

  Next, an operation in the case where a conductive paste is applied onto the transfer electrode of the substrate 23 by the paste applying apparatus having the above configuration will be described. In this embodiment, first to fourth display areas 24a to 24d are formed on the substrate 23, and each of the display areas 24a to 24d has six short sides along the longitudinal direction as shown in FIG. Four transfer electrodes 20 are provided at equal intervals along the direction. Each of the display regions 24a to 24d has a circuit pattern formed of ITO (indium-tin oxide) or the like, and a sealant is applied so as to surround the periphery of the circuit pattern.

  First, the substrate 23 is supplied and placed on the placement table 5 by a robot (not shown) or the like. The number of chamfers along the arrangement direction of the four coating nozzles 12 of the substrate 23 on which the first to fourth display areas 24a to 24d are formed is two.

  When the substrate 23 is supplied to the mounting table 5, the substrate 23 is imaged by the imaging camera 22, and the imaging signal is input to the control device 21 for image processing. Based on the image processing result, the rotational deviation of the substrate 23 in the θ direction is calculated. Then, the θ drive source 6 is driven based on the calculation result, and the substrate 23 is positioned in the θ direction so that one side of each of the display areas 24a to 24d is parallel to the X direction.

  Next, the first to fourth coating nozzles 12a to 12 are disposed above one side (the upper side in FIG. 3) in the longitudinal direction of the first and second display regions 24a and 24b located on one end side in the Y direction of the substrate 23. The substrate 21 is positioned by controlling the drive of the Y drive source 4 by the control device 21 so that 12d faces each other.

  When the positioning of the substrate 23 in the Y direction is completed, the first to fourth X drive sources 10a to 10d are driven. Then, the first application nozzle 12a is positioned so as to face the leftmost transfer electrode 20 among the four transfer electrodes 20 provided along the upper side of the first display region 24a, and the third application nozzle 12c is provided. Of the four transfer electrodes 20 provided along the upper side of the third display region 24c, the transfer electrode 20 is positioned so as to face the leftmost transfer electrode 20.

The distance along the X direction of the first coating nozzle 12a and a second coating nozzle 12b, and a third coating nozzle 12c and the fourth coating nozzle 12d is formed on the substrate 23 indicated by _{P 1} in FIG. 3 It is set to be twice the distance of the pitch P ₁ of the transfer electrodes 20.

Next, after the application nozzles 12a to 12d are driven to the predetermined height by the first to fourth Z drive sources 17a to 17d, the actuators 16 provided in the syringes 13 are driven, and the syringes 13 are driven. As shown in FIG. 4A, the conductive paste 25 contained in the inside is applied in a predetermined amount of dots on the transfer electrode 20 arranged along one side of the first and second display areas 24a and 24b. To be supplied. That is, the conductive paste 25 is supplied at twice the distance of the pitch P _1.

Next, after each coating nozzle 12a to 12d is driven in the upward direction, it is driven by one pitch of the transfer electrode 20 in the X direction. Then, after being driven in the descending direction, the conductive paste 25 in the syringe 13 is discharged and supplied. As a result, first, second display region 24a, 24b longitudinally along one side of four point-like conductive paste 25 is applied at intervals of pitch P ₁ as shown in FIG. 4 (b) .

Next, the mounting table 5 is driven in the Y direction by the Y drive source 4, and the other side in the longitudinal direction of the first and second display areas (the lower side in FIG. 3) is the first to fourth. Positioning is performed below the application nozzles 12a to 12d. Then, similarly to the one side against this other side, applying a four point-like conductive paste 25 at intervals of a pitch P _1. As a result, as shown in FIG. 4C, the four transfer electrodes 20 formed along the one side and the other side in the longitudinal direction of the first display region 24a and the second display region 24b are electrically conductive. The adhesive paste 25 can be applied.

If the conductive paste 25 is applied to one side and the other side in the longitudinal direction of the first display area 24a and the second display area 24b, the substrate 23 is further driven in the Y direction to form the third display area 24c. One side in the longitudinal direction of the fourth display area 24d is positioned below the first to fourth coating nozzles 12a to 12d. Then, as shown in FIG. 4D, one side of the first and second display areas 24a and 24b is provided at four places along one side in the longitudinal direction of the third display area 24c and the fourth display area 24d. and similarly, applying the four point-like conductive paste 25 at intervals of a pitch P _1.

Next, after the substrate 23 is driven in the Y direction and the other sides in the longitudinal direction of the third display region 24c and the fourth display region 24d are positioned below the first to fourth coating nozzles 12a to 12d, also at four positions along the other side as shown in FIG. 4 (d), one side as well as four point-like conductive paste 25 is applied at intervals of pitch P _1. Accordingly, the conductive paste 25 can be applied to the four transfer electrodes 20 formed along one side and the other side in the longitudinal direction of the first to fourth display regions 24a to 24d.

  If the conductive paste 25 is applied to the first and fourth display areas 24a to 24d along the longitudinal side and the other side, the θ driving source 6 is operated to move the mounting table 5 together with the θ table 3 to the clock. Rotate 90 degrees in the direction. Thereby, the third display region 24c and the first display region 24a are located on one end side along the Y direction of the substrate 23, and the fourth display region 24d and the second display region 24b are located on the other end side. Will do. Then, one side of the third display region 24c and the first display region 24a (the left side in FIG. 3) is positioned below the first to fourth application nozzles 12a to 12d. Position in the Y direction.

  Next, the first to fourth X drive sources 10a to 10d are driven, and the first coating nozzle 12a is provided to the four transfer electrodes 20 provided along the upper side in the short direction of the third display region 24c. Among them, the leftmost transfer electrode 20 among the four transfer electrodes 20 provided so as to face the left transfer electrode 20 and having the third coating nozzle 13c provided along the upper side of the first display region 24a in the short direction. Position it so that it faces.

Further, the intervals along the X direction of the first application nozzle 12a and the second application nozzle 12b, and the third application nozzle 12c and the fourth application nozzle 12d are the lengths of the display areas 24a to 24d shown in FIG. set to three times the spacing of the pitch P ₂ of the transfer electrodes 20 provided along the direction. Note that the pitch P ₁ and the pitch P ₂ may have different dimensions, but may also be the same.

Next, the first to fourth coating nozzles 12a to 12d are lowered to a predetermined height by the first to fourth Z drive sources 17a to 17d, and the coating nozzles 12a to 12d are shown in FIG. 5A. In addition, the dotted conductive paste 25 is applied to one side in the short direction of the third display region 24c and the first display region 24a of the substrate 23. That is, each display area 24c, respectively to 24a 2 two point-like conductive paste 25 is applied at three times the spacing of the pitch P _2.

Then, after raising the respective coating nozzle 12 a to 12 d, after which is moved by one pitch indicated by _{P 2} in the X direction as shown in FIG. 5 (b), up to a predetermined height each coating nozzle 12 a to 12 d The conductive paste 25 is applied by lowering. Thereby, the conductive paste 25 can be applied to four locations along one side in the short direction of the third and first display regions 24c and 24a.

Then, after raising the respective coating nozzle 12 a to 12 d, after which is further moved by one pitch indicated by P ₂ in the X direction, lowers the respective coating nozzle 12 a to 12 d to a predetermined height conductive paste 25 Apply. Thereby, it is possible to apply the third, the first display area 24c, the interval of the pitch P ₂ of the conductive paste 25 to the six as in the transverse direction of the side shown in FIG. 5 (c) of 24a .

In this manner, when the conductive paste 25 is applied to six locations along one side in the short direction of the third display region 24c and the first display region 24a, the Y drive source 4 is operated to perform the third operation. The other side (the right side in FIG. 3) of the short direction of the display area 24c and the first display area 24a is positioned below the first to fourth coating nozzles 12a to 12d. Then, as shown in FIG. 5C, the conductive paste 25 is applied to the six places along the other side in the short direction of the third display area 24c and the first display area 24a in the same manner as one side. Apply at intervals of ₂ .

  Thereby, the conductive paste 25 can be applied to each of six locations along one side and the other side in the short direction of the third display region 24c and the first display region 24a.

  When the application of the conductive paste 25 along the one side and the other side in the short direction of the third display region 24c and the first display region 24a is finished, the Y drive source 4 is operated to turn on the fourth display region. Positioning is performed such that one side in the short direction of 24d and the second display region 24b is below the first to fourth coating nozzles 12a to 12d.

Then, as shown in FIG. 5D, the conductive paste 25 is applied to the third display area 24c and the first display area 24c at the six positions on one side in the short direction of the fourth display area 24d and the second display area 24b. It applied at intervals of pitch P ₂ in the same manner as the lateral direction of one side of the display region 24a of the.

  If the conductive paste 25 is applied to six places on one side in the short direction of the fourth display area 24d and the second display area 24b, the Y drive source 4 is operated to turn the fourth display area 24d Positioning is performed so that the other side in the short side direction with respect to the second display region 24b is below the first to fourth coating nozzles 12a to 12d.

Then, as shown in FIG. 5 (e), conductive paste 25 is applied to the other six sides of the short side of the fourth display region 24d and the second display region 24b in the short direction of these display regions. in the same manner as the one side is coated at intervals of pitch P _2. As a result, the conductive paste 25 is applied to the peripheral portions of the first to fourth display regions 24a to 24d on the transfer electrodes 20 formed at predetermined intervals as shown in FIG.

  As described above, when the conductive paste 25 is applied on the transfer electrode 20 formed in each of the display areas 24a to 24d, it is applied to one display area by a plurality of, that is, two application nozzles. Yes.

  Therefore, even if the number of chamfers of the substrate 23 in the arrangement direction of the first to fourth coating nozzles 12a to 12d is smaller than the number of the coating nozzles 12a to 12d, in this embodiment, the four coating nozzles 12a to 12d are used. Are simultaneously operated to apply the conductive paste 25. That is, the operation rate of the application nozzles 12a to 12d can be improved.

  Further, even when the four display areas 24a to 24d are formed in two rows and two columns on the substrate 23 and the number of chamfering is two in the arrangement direction of the four coating nozzles 12a to 12d, the four coating nozzles 12a. Since the conductive paste 25 is applied using all of ~ 12d, the coating processing capability of the paste coating apparatus is more effective than the conventional method in which coating is performed using one coating nozzle for one display area. Thus, the tact time required for applying the conductive paste 25 can be shortened.

  Four display areas 24a to 24d are formed in two rows and two columns on the substrate 23, and the conductive paste 25 is applied to the transfer electrodes 20 formed along the four sides of the peripheral portions of the display areas 24a to 24d. In this case, the substrate 23 is intermittently driven and positioned in the Y direction, and after applying the conductive paste 25 along all sides parallel to the X direction of each display region, the substrate 23 is rotated by 90 degrees. Then, the conductive paste 25 was applied along the remaining side that was rotated and parallel to the X direction.

  Therefore, by driving the first to fourth application nozzles 12a to 12d in the X direction, the conductive paste 25 can be applied along each side of each display region. The drive control of the application nozzle can be performed easily and quickly as compared with the conventional case where the conductive paste is applied to the entire periphery of each display area while being driven in the direction.

  Further, after applying the conductive paste 25 along all the sides parallel to the X direction of the display areas 24a to 24d, the substrate 23 is rotated by 90 degrees, and the remaining sides parallel to the X direction by this rotation. The conductive paste 25 was applied along the line.

  Therefore, the application of the conductive paste 25 can be performed more efficiently than when the present invention is applied to the case where the conductive paste 25 is applied without rotating the substrate 23.

  That is, when the conductive paste 25 is applied along all the sides of the display areas 24a to 24d without rotating the substrate 23, it is formed along the right side of the display area 24a in FIG. The distance between the transfer electrode 20 formed and the transfer electrode 20 formed along the left side in the short direction of the display area 24b is such that adjacent coating nozzles can approach each other without physically interfering with each other. Is smaller than that, four coating nozzles are applied to the transfer electrode 20 formed along the four sides consisting of the left and right sides of the display region 24a and the left and right sides of the display region 24b. When the conductive paste 25 is applied by operating 12a to 12d at the same time, the application nozzles interfere with each other, and at least one application nozzle must not be stopped. Re must.

  However, by rotating the substrate 23 by 90 degrees, the conductive paste 25 is applied by simultaneously operating the four application nozzles 12a to 12d as described with reference to FIGS. Therefore, the conductive paste 25 can be applied efficiently.

  However, even when the present invention is applied to the case where the conductive paste 25 is applied without rotating the substrate 23, the conductive properties along the longitudinal sides of the display regions 24 a to 24 d in FIG. When applying the paste 25, as described with reference to FIG. 4 in the above embodiment, the four application nozzles 12a to 12d can be operated at the same time. It is possible to improve the rate.

  The present invention is not limited to the one embodiment described above and can be variously modified. For example, the number of display areas formed on the substrate is not limited to four, and may be one to three or five or more. In addition, the number of coating nozzles provided in the coating apparatus is not limited to four, and may be two, three, or five or more. In short, a plurality of coating nozzles for one display area are conductive. Any number can be used as long as the paste can be applied.

  The conductive paste is applied to one display area with two application nozzles, but may be applied to three display nozzles with respect to one display area.

  When a θ table is provided in the coating device and the conductive paste is applied along a predetermined direction of the display area, the conductive paste is applied in a direction crossing the predetermined direction by rotating the substrate 90 degrees. , When two coating apparatuses without a θ table are installed side by side and the application of the conductive paste along the predetermined direction of the display area is completed with one coating apparatus, the substrate is transferred to the other coating apparatus, At that time, the conductive paste may be applied in a direction crossing the predetermined direction by rotating the substrate by 90 degrees.

  In this case, since the application of the conductive paste 25 along the predetermined direction and the application of the conductive paste 25 along the direction crossing the predetermined direction can be performed in parallel, productivity can be further improved. .

  The paste applied by the coating apparatus is not limited to the conductive paste, and this apparatus and method can be applied even when, for example, a sealing paste provided so as to surround the display area is applied linearly. In this case as well, if a plurality of application nozzles are applied to one display area, the operation rate of the application nozzles and the application speed can be improved.

  In the above embodiment, the coating nozzle is driven in the X direction and the substrate is driven in the Y direction and the θ direction. However, the coating nozzle and the substrate are relatively driven in the surface direction of the display area. Just do it. For example, in FIG. 1, instead of providing the base table 2 for driving the mounting table 5 in the Y direction, driving means for driving the support 7 in the Y direction may be provided.

  Moreover, although the example which apply | coats an electrically conductive paste to the board | substrate with which the transfer electrode was arrange | positioned along each of the long side of a display area and the short side is demonstrated, the long side or short direction of a display area is demonstrated. The present invention can also be applied to a substrate in which transfer electrodes are arranged along only one of the sides. In this case, it is desirable to apply the conductive paste by aligning the substrate so that the side of the substrate where the transfer electrodes are arranged is parallel to the direction of arrangement of the application nozzles.

  In the application of the conductive paste to the substrate, the example in which the coating nozzle is set to be twice or three times the pitch of the transfer electrode has been described, but the setting interval of the coating nozzle is not limited to this. You may set to 1 time or 4 times or more. That is, the set interval of the application nozzles depends on the minimum interval at which the application nozzles can approach without physical interference between adjacent application nozzles, the number of transfer electrodes formed along one side of the display area, and the like. May be set as appropriate.

  In addition, the substrate support means has been described as an example configured by the mounting table 5 mounted on the base table 2 and the θ table 3. Also good. In this case, the support body supporting a plurality of application nozzles as shown in FIG. 1 is arranged so as to straddle the transport apparatus in a direction orthogonal to the substrate transport direction and in the substrate transport direction, and A conductive paste provided in a predetermined direction of a coating region formed on a substrate by a coating nozzle provided by a coating nozzle supported by one of the supports provided with a rotating device that rotates the substrate by 90 degrees on a conveying device positioned between the two supports. It is preferable to apply the conductive paste along the direction intersecting the predetermined direction of the display area by the application nozzle supported by the other support.

  Although the example in which the display area is rectangular has been described, the display area is not limited to the rectangular shape, and may be another polygonal shape, for example. In this case, it is preferable to apply the paste while relatively rotating the substrate and the application nozzle so that each side of the display area is sequentially parallel to the arrangement direction of the plurality of application nozzles.

1 is a perspective view showing a schematic configuration of a paste application apparatus according to an embodiment of the present invention. FIG. 2 is a control system diagram of the paste application apparatus shown in FIG. 1. The top view of the board | substrate with which the transfer electrode was each provided in four display areas. (A)-(d) is explanatory drawing which showed the order which apply | coats a conductive paste to the one side and other side of the longitudinal direction of four display areas. (A)-(e) is explanatory drawing which showed the order which apply | coats an electrically conductive paste to the one side and other side of the transversal direction of four display areas.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 3 ... (theta) table, 5 ... Mounting table, 8 ... X guide body, 9a-9d ... 1st thru | or 4th X movable body, 12a-12d ... 1st thru | or 4th application nozzle, 17a-17d ... 1st Thru | or 4th Z drive source, 20 ... transfer electrode, 21 ... control apparatus, 23 ... board | substrate, 24a-24d ... display area, 25 ... conductive paste.

Claims (6)

A paste application device for applying paste to a display area formed on a substrate,
Substrate support means on which the substrate is placed;
A plurality of application nozzles arranged along a predetermined direction at positions facing the substrate placed on the substrate support means and applying the paste to the substrate;
Driving means for relatively driving the substrate and the coating nozzle in the surface direction of the display area;
And a control means for applying the paste to a single display area provided on the substrate by a plurality of application nozzles. A paste application device that applies a conductive paste to the periphery of a display area formed on a substrate,
Substrate support means on which the substrate is placed;
A plurality of application nozzles arranged along a predetermined direction at positions facing the substrate placed on the substrate support means and applying the conductive paste to the substrate;
Driving means for relatively driving the substrate and the coating nozzle in the surface direction of the display area;
And a control means for applying the conductive paste to a display area provided on the substrate by a plurality of application nozzles.   When the display area is rectangular, the control means applies the conductive paste along one side parallel to the arrangement direction of the application nozzle in the display area, and then rotates the substrate by 90 degrees to 3. The paste coating apparatus according to claim 2, wherein the coating nozzle and the driving unit are controlled so that the conductive paste is coated along the other side intersecting with the one side. A paste application method for applying a paste to a display area formed on a substrate,
Placing the substrate on the substrate support means;
Relatively driving the substrate placed on the substrate support means and a plurality of application nozzles arranged along a predetermined direction at positions facing the substrate in the surface direction of the display region;
And a step of applying the paste by a plurality of application nozzles to one display area provided on the substrate while relatively driving the substrate and the application nozzle. . A paste application method for applying a conductive paste to the periphery of a display area formed on a substrate,
Placing the substrate on the substrate support means;
A step of relatively driving the substrate placed on the substrate support means and a plurality of coating nozzles arranged along a predetermined direction at positions facing the substrate in the surface direction of the display region;
Applying the conductive paste by a plurality of application nozzles to one display area provided on the substrate while relatively driving the substrate and the application nozzle. Application method. When the display area is rectangular, the step of applying the conductive paste to a location along one side parallel to the direction of arrangement of the application nozzle of the display area;
The paste coating method according to claim 5, further comprising: applying a conductive paste to a location along the other side of the display area that intersects the one side by rotating the substrate by 90 degrees.

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