JP2007237618A - Plate for screen printing, its manufacturing method, and manufacturing method for electronic component - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a plate for screen printing, which enables the proper manufacture of a thinned and microsized electrode, and which can be obtained through a simple manufacturing process. <P>SOLUTION: In this plate for screen printing, a mesh is rolling-worked or press-worked, so that a printing surface-side flat part 7A and a squeegee surface-side flat part, parallel to a surface of the mesh, are formed on both sides, that is, the printing surface side and squeegee surface side of an intersection point part of a warp 4 and a woof 5. After that, working for reducing the width w<SB>1</SB>of the flat part 7A is applied to at least one 7A of the printing surface-side flat part 7A and the squeegee surface-side flat part. The width w<SB>1</SB>satisfies the inequality: 0<w<SB>1</SB>≤0.8w<SB>2</SB>(w<SB>2</SB>represents the wire diameter of a wire which is positioned on the printing surface side at the intersection point part, and the maximum wire diameter in a direction orthogonal to the longitudinal direction of the wire and parallel to the surface of the mesh, at the intersection point part). <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a screen printing plate, a method for manufacturing the same, and a method for manufacturing an electronic component, and more particularly, to a screen printing plate used for manufacturing electrodes such as a multilayer ceramic chip capacitor and a multilayer chip inductor by screen printing, a method for manufacturing the same The present invention relates to a method for manufacturing an electronic component.

  Multilayer ceramic chip capacitors and multilayer chip inductors are incorporated in various electronic devices such as mobile phones and personal computers, and the demand thereof is increasing year by year.

  On the other hand, electronic devices such as mobile phones and personal computers are becoming smaller and lighter, and there is a strong demand for thinning and miniaturization of the electrodes of multilayer ceramic chip capacitors and multilayer chip inductors used therefor.

  To meet this demand, measures have been taken by reducing the wire diameter of the mesh wire constituting the screen printing plate for producing the electrode, and further applying a calendar (rolling) treatment to the mesh. It was.

  However, there are many technical problems in producing a screen printing plate in this way, and it is difficult to reduce the thickness and miniaturization of electrodes such as multilayer ceramic chip capacitors and multilayer chip inductors. It is.

  For example, when an electrode having a small area such as a multilayer ceramic chip capacitor C0402 size is produced by a screen printing method using a mesh subjected to a calendar (rolling) process, corners of the electrode shape are rounded during electrode printing, In some cases, the electrode shape is constricted, or the electrode shape is cut off and divided (hereinafter referred to as a printed pattern chip).

  In addition, in order to realize thinning and miniaturization of electrodes, it is necessary to make the screen printing plate mesh thin and to reduce the size of the mesh. While it is necessary to reduce the diameter and mesh size, the current technology has its limitations.

  On the other hand, in Patent Document 1, the cross-sectional shape of the mesh linear portion in the direction orthogonal to the longitudinal direction of the mesh linear portion constituting the mesh portion is substantially semicircular or substantially such that the arc portion faces the print surface side. A screen printing plate having a semi-elliptical shape and a flat other surface has been proposed. When this screen printing plate is used, even when the lower surface of the mesh linear portion abuts on the substrate, the contact state between the lower surface of the mesh linear portion and the substrate is in line contact and passes through the mesh opening hole. Even when a thin paste printing film is to be formed, a uniform paste printing film without a so-called mesh mark is formed in the area to be printed with the paste. It is described that it can be formed.

  However, in order to produce the screen printing plate described in Patent Document 1, it is necessary to dispose a plurality of resists and perform electroplating a plurality of times, and further to remove the resist and the substrate. Take it.

JP 2002-1909 A

  The present invention has been made in view of such problems, and is a screen printing plate capable of satisfactorily producing thinned and miniaturized electrodes, and a screen obtained by a simple manufacturing process. The purpose is to provide a printing plate.

In order to solve the above-mentioned problems, the present inventor has advanced earnestly research and development. As a result, a mesh having a structure in which metal fine wires are knitted is rolled or pressed, a flat portion is formed at the intersection of the mesh, and the thickness h of the mesh is reduced by a predetermined amount or more. It has been found that a screen printing plate capable of achieving the above object can be obtained by polishing the printing surface side and setting the width w ₁ of the flat portion on the printing surface side to a predetermined value or less. The present invention has been completed based on such findings. That is, the above object is achieved by the following examples.

(1) A screen printing plate having a mesh formed by knitting a wire, and by rolling or pressing the mesh, the mesh is formed on both the printing surface side and the squeegee surface side of the intersection portion of the wire. After forming the printing surface side flat portion and the squeegee surface side flat portion parallel to the surface, at least the printing surface side flat portion of the printing surface side flat portion and the squeegee surface side flat portion, the width w of the printing surface side flat portion ₁ is performed, and w ₁ is 0 <w ₁ ≦ 0.8w ₂ (w ₂ is the wire diameter of the wire positioned on the printing surface side at the intersection, and the wire A screen printing plate characterized by satisfying a maximum wire diameter in a direction perpendicular to the longitudinal direction and parallel to the surface of the mesh.

Here, the printing surface side is the side that faces the substrate when screen printing is performed, and the squeegee surface side is the side that presses the squeegee when screen printing is performed. Is a plane that bisects the thickness of each part of the mesh. W ₁ is the width of the printing surface side flat portion of the wire located on the printing surface side at the intersection of the wire constituting the mesh, and is perpendicular to the longitudinal direction of the wire, and the flat portion Is the maximum width in the direction parallel to.

(2) A screen printing plate having a mesh formed by knitting a wire, the mesh being a printing surface parallel to the surface of the mesh on both the printing surface side and the squeegee surface side at the intersection of the wire material having a side flat portion and the squeegee side flat part, the ShaAtsu of the mesh when the _{h, 0.5w 2 ≦ h / 2} ≦ 0.7w 2 (w 2 are on the printing surface side in the intersection portion The wire diameter of the wire positioned, and at the intersection, satisfying the maximum wire diameter in the direction perpendicular to the longitudinal direction of the wire and parallel to the surface of the mesh) and flat on the printing surface side The width w ₁ of the part is 0 <w ₁ ≦ 0.8w ₂ .

  Here, the thickness of the mesh is the maximum thickness of the mesh in a direction orthogonal to the plane of the mesh.

(3) The screen printing plate according to (1) or (2), wherein a width w ₁ of the printing surface side flat portion is smaller than a width w ₃ of the squeegee surface side flat portion.

Here, w ₃ is the width of the flat portion of the squeegee surface side of the wire positioned on the squeegee surface side at the intersection of the wire constituting the mesh, and is orthogonal to the longitudinal direction of the wire and flat It is the maximum width in the direction parallel to the part.

  (4) A screen printing plate having a mesh formed by knitting a wire, wherein the mesh is formed on both the printing surface side and the squeegee surface side of the intersection portion of the wire by rolling or pressing the mesh. After forming the printing surface side flat portion and the squeegee surface side flat portion parallel to the surface, at least the printing surface side flat portion is processed among the printing surface side flat portion and the squeegee surface side flat portion, and at the intersection portion The screen printing plate, wherein the wire on the printing surface side has a curved surface convex on the printing surface side or a polygonal shape convex on the printing surface side.

  Here, having a polygonal shape that is convex in the direction of the printing surface means that the cross-section obtained when the wire located on the printing surface side at the intersection of the wires is cut along a plane perpendicular to the longitudinal direction. It means that the shape on the printing surface side becomes a part of a polygon.

(5) A screen printing plate having a mesh formed by knitting a wire, wherein the mesh has a flat portion parallel to the surface of the mesh on the squeegee surface side at the intersection of the wire, when the ShaAtsu mesh was _{h, 0.5w 2 ≦ h / 2} ≦ 0.7w 2 (w 2 is a wire diameter of the wire located on the printing surface side in the intersection portion, in the intersection portion The maximum wire diameter in the direction perpendicular to the longitudinal direction of the wire and parallel to the surface of the mesh), and the printed surface side does not have a flat portion parallel to the surface of the mesh, A screen printing plate having a curved surface convex on the printing surface side or a polygonal shape convex on the printing surface side.

  (6) The screen printing plate according to any one of (1) to (5), wherein the wire is made of metal.

(7) A method for producing a screen printing plate having a mesh formed by knitting a wire, and by rolling or pressing the mesh on both the printing surface side and the squeegee surface side of the intersection portion of the wire After forming the printing surface side flat portion and the squeegee surface side flat portion parallel to the surface of the mesh, at least the printing surface side flat portion of the printing surface side flat portion and the squeegee surface side flat portion is the printing surface side flat portion. The width w ₁ is reduced, and w ₁ is 0 <w ₁ ≦ 0.8w ₂ (w ₂ is the wire diameter of the wire located on the printing surface side at the intersection, and at the intersection, A method for producing a screen printing plate, characterized by satisfying a maximum wire diameter in a direction perpendicular to the longitudinal direction of the wire and parallel to the surface of the mesh.

(8) The method for producing a screen printing plate as described in (7), wherein the process of reducing w ₁ is polishing.

  Here, the term “polishing” includes chemical etching as well as physical processing.

(9) The screen printing plate according to (7) or (8), wherein a width w _{1 of the} flat portion on the printing surface side is smaller than a width w _{3 of the} flat portion on the squeegee surface side. Manufacturing method.

  (10) A method for producing a screen printing plate having a mesh formed by knitting a wire, and by rolling or pressing the mesh on both the printing surface side and the squeegee surface side of the intersection portion of the wire After forming the printing surface side flat portion and the squeegee surface side flat portion parallel to the mesh surface, at least the printing surface side flat portion is processed among the printing surface side flat portion and the squeegee surface side flat portion, and the intersection point The method for producing a screen printing plate, characterized in that the wire on the printing surface side has a curved surface convex on the printing surface side or a polygonal shape convex on the printing surface side.

  (11) The method for producing a screen printing plate as described in (10), wherein the processing performed on the printing surface side flat portion is polishing.

  (12) The method for producing a screen printing plate according to any one of (7) to (11), wherein the wire is made of metal.

  (13) A method for producing an electronic component, wherein the screen printing plate according to any one of (1) to (6) is used.

In the screen printing plate according to the present invention, since the mesh thickness is thin, it is possible to reduce the thickness of the electrode obtained by screen printing. Further, since the width w _{1 of the} flat portion on the printing surface side at the intersection of the wires satisfies 0 <w ₁ ≦ 0.8w ₂ , the mesh of the screen printing plate receives a pressing force from above during screen printing. Even if the substrate to be printed comes into contact, a space for the electrode paint that has passed through the mesh opening to enter between the wire on the printing surface side of the intersection and the substrate to be printed is secured, and printing pattern chipping is prevented. Is done.

Further, if reducing larger width w ₁ of width w ₃ is the printing surface side flat portion without significantly decreasing the squeegee side flat portion, while suppressing reduction in strength of the wire, since the print pattern chipping can be prevented, the line It becomes easy to use a wire with a small diameter, and it becomes easy to cope with miniaturization of electrodes.

  In addition, the screen printing plate according to the present invention is manufactured by a simple method in which, for example, a flat portion is formed at the intersection of meshes by rolling or pressing, and then at least the printing surface side of the mesh is polished. Can do.

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

  FIG. 1 is a plan view schematically showing a screen printing plate 1 according to an embodiment of the present invention. As shown in FIG. 1, a screen printing plate 1 according to an embodiment of the present invention includes a mesh 2 and a support member 3 surrounding the mesh 2.

  2 is an enlarged plan view showing a part of the mesh 2. FIG. 2A is a printing surface side, and FIG. 2B is a squeegee surface side. The mesh 2 is rolled or pressed. As can be seen from FIG. 2, the mesh 2 is formed by knitting warps 4 and wefts 5 and is provided with an opening 6 through which the electrode paint passes. As the weaving method of the mesh 2, plain weaving (weaving method in which warp yarns and weft yarns are alternately crossed), twill weaving method (weaving method in which two warp yarns or weft yarns are continuously woven) or the like can be used.

A printing surface side flat portion 7A (see FIG. 2A) parallel to the surface of the mesh 2 and a squeegee surface side flat portion 7B (FIG. 2) are formed at the intersections of the warp yarn 4 and the weft yarn 5 by rolling or pressing. the (B) refer) provided, further, by carrying out working to at least the printing surface side flat portion 7A, when the ShaAtsu of the mesh was is h, the _{0.5w 2 ≦ h / 2 ≦ 0.7w} 2 (See FIG. 3). By doing in this way, thinning is possible in the electrode obtained by screen printing. When the value of h / 2 exceeds 0.7 w _2, the electrodes obtained by the screen printing thinning becomes insufficient, the value of h / 2 falls below 0.5 w _2, the electrodes the paint during screen printing The passage area becomes too small, and there is a high possibility that print pattern chipping will occur. From the viewpoint of lowering the possibility of print pattern chipping, the lower limit of the h / 2 value range is preferably 0.6 w _2, and from the viewpoint of further thinning the resulting electrode, h / The upper limit of the value range of ₂ is preferably 0.65 w ₂ .

Moreover, previously noted, the width w ₁ of the print surface side flat portion in the intersection point is that of the width w ₁ of the print surface side flat portion 7A shown in FIG. 2, warps 4 forming the mesh 2 and weft 5 is the width of the printing surface side flat portion 7A of the wire rod (warp yarn 4 in FIG. 2) located on the printing surface side at the intersection with 5 and is orthogonal to the longitudinal direction of the wire rod and the flat portion Is the maximum width in the direction parallel to. Also, the w ₂ described earlier is that the w ₂ shown in FIG. 2, at the intersection of warp 4 and weft 5, diameter of the wire located on the printing surface side (in FIG. 2 warps 4) And in the said intersection part, it is the largest wire diameter of the direction (direction parallel to the surface of the mesh 2) orthogonal to the longitudinal direction of the said wire, and parallel to the printing surface side flat part 7A.

The width w ₁ of the printing surface side flat portion 7A is 0 <w ₁ ≦ 0.8w ₂ . In this way, even if the screen printing plate 1 receives a pressing force from above during screen printing and the printing surface side of the mesh 2 and the substrate 8 come into contact with each other, as shown in FIG. A space 9 is secured between the wire rod (the warp yarn 4 in FIG. 3) located on the printing surface side and the printed material 8 at the intersection of the warp yarn 4 and the weft yarn 5 constituting the mesh 2, and the opening 6. The electrode paint that has passed through can enter the space 9. As a result, the electrode paint easily turns around on the printing surface of the printing medium 8, and printing pattern chipping is prevented. FIG. 3 shows a part of a cross section taken along line III-III in FIG. 2 (A), with the warp 4 as the center and the printing surface side facing down. is there. For convenience of explanation, FIG. 3 also shows the substrate 8 to be printed.

  Further, as shown in FIG. 4, the printing surface side flat portion 7A is processed, and the appearance shape on the printing surface side of the warp yarn 4 located on the printing surface side at the intersection of the warp yarn 4 and the weft yarn 5 is set on the printing surface side. It may be a convexly curved surface. In this case, even if the printing surface side of the mesh portion comes into contact with the substrate 8 to be printed, the line contact is stopped and the space 9 is easily secured.

  Further, as shown in FIGS. 5 and 6, the printing surface side flat portion 7 </ b> A is processed, and the appearance shape on the printing surface side of the warp yarn 4 located on the printing surface side at the intersection of the warp yarn 4 and the weft yarn 5 is formed. It is good also as a part of polygon convex to the printing surface side. Also in the case of FIGS. 5 and 6, even if the printing surface side of the mesh portion comes into contact with the printing medium 8, the line contact is stopped and the space 9 is easily secured.

  3 to 6 show the case where the warp yarn 4 is located on the printing surface side at the intersection of the warp yarn 4 and the weft yarn 5, but the same applies when the weft yarn 5 is located on the printing surface side. .

  As the material of the warp 4 and the weft 5, any material can be used as long as it can provide a flat portion parallel to the surface of the mesh 2 at the intersection of the warp 4 and the weft 5 by rolling or pressing. For example, a metal or a resin can be preferably used. As the metal, for example, a metal wire such as stainless steel, brass, phosphor bronze, or copper can be used, but stainless steel is preferably used in terms of tensile strength and elongation.

  The wire diameter of the warp 4 and the weft 5 (before rolling or pressing the mesh 2) is preferably 10 to 30 μm. The upper limit of the preferred range of the diameters of the warp 4 and the weft 5 is 30 μm because if it exceeds that, it becomes difficult to reduce the thickness of the electrode obtained by screen printing. The lower limit value of the preferred range of the diameter is 10 μm because if it is less than that, it is difficult to secure the necessary tensile strength of the warp 4 and the weft 5 at present.

  When screen printing is performed using the screen printing plate 1, a portion of the mesh 2 in the vicinity of the support member 3 where the electrode is not printed is masked with an emulsion 12, and then screen printing is performed as shown in FIG. The electrode paint 11 is supplied onto the printing plate 1, and the squeegee 10 is pressed against the screen printing plate 1 and moved in the horizontal direction. As a result, the electrode paint 11 is transferred to the surface of the substrate 8.

  Next, a method of manufacturing the screen printing plate 1 in the case where metal is used as the warp 4 and the weft 5 will be described with reference to FIG. FIG. 8 shows a process of rolling or pressing the mesh 2 to provide a printing surface side flat portion 7A and a squeegee surface side flat portion 7B parallel to the surface of the mesh 2 at the intersection of the warp yarn 4 and the weft yarn 5. The state which is processing with respect to the printing surface side flat part 7 is shown.

  A metal wire of stainless steel, brass, phosphor bronze, copper or the like having a wire diameter of 10 to 30 μm is woven into a woven shape such as a plain weave or a twill weave to form a mesh 2. The thickness of the mesh 2 is about 23 to 60 μm. The obtained mesh 2 is subjected to rolling or pressing to reduce the thickness to about 16 to 42 μm.

Then, the printing surface side of the mesh 2 after rolling or pressing is processed, and the width w ₁ of the printing surface side flat portion 7A generated at the intersection of the warp 4 and weft 5 by rolling or pressing is set to 0. <W ₁ ≦ 0.8w ₂ (w ₂ is the wire diameter of the wire located on the printing surface side at the intersection of the warp 4 and the weft 5, and is orthogonal to the longitudinal direction of the wire at the intersection And the maximum wire diameter in the direction parallel to the printing surface side flat portion 7A (direction parallel to the surface of the mesh 2) is reduced (see FIG. 8A). In addition, the printing surface side flat portion 7A is processed, and at the intersection, the printing surface side wire is a curved surface convex on the printing surface side (see FIG. 8B) or a polygonal shape convex on the printing surface side. (See FIGS. 8C and 8D).

  A processing method for reducing the width of the printing surface side flat portion 7A, a processing method for causing the printing surface side wire to have a curved surface convex on the printing surface side, and a convex surface on the printing surface side at the intersection. There is no particular limitation on the processing method for making such a polygonal shape, and a physical polishing method, a chemical etching method, or the like can be used. An example of a physical polishing method is fluid polishing. Moreover, electrolytic polishing can be mentioned as a method of chemically polishing.

FIGS. 9A and 9B are plan views showing, from the printing surface side, a part of the mesh 2 after polishing at least the printing surface side of the mesh 2 that has been rolled or pressed. When the polishing amount is small, as shown in FIG. 9A, the printing surface side flat portion 7A remains with a certain size. When the polishing amount is increased appropriately, the printing surface side flat portion 7A hardly remains, and the width w ₁ of the printing surface side flat portion 7A can be made close to zero. Furthermore, as shown in FIG. 9B, the flat portion can be eliminated by finally making the printing surface side of the intersection portion a curved surface.

  However, as the polishing amount increases, the tensile strength of the warp 4 and the weft 5 constituting the mesh 2 decreases. Therefore, it is preferable to reduce the polishing amount in terms of maintaining the tensile strength of the warp 4 and the weft 5.

However, as described above, in order to prevent printing pattern chipping, the mesh printing surface side is polished to some extent, and the width w ₁ of the flat portion on the printing surface side of the intersection is 0.8 w ₂ or less. It is necessary to.

  Accordingly, it is preferable to polish the printed surface side of the mesh 2 more and reduce the polishing on the squeegee surface side. As a result, it is possible to prevent chipping of the printed pattern while suppressing a decrease in the strength of the wire, so that it is easy to use a wire having a small wire diameter and to cope with miniaturization of the electrode.

  In addition, if the printing surface side of the mesh 2 is polished, the surface smoothness on the printing surface side of the wire located on the printing surface side is also increased, and the electrode paint is more likely to wrap around on the printing surface of the printing material, and the printed pattern is missing. The effect that is prevented is also obtained.

  A warp and weft with a material diameter of stainless steel and a wire diameter of 18.0 μm were plain woven to obtain a mesh of # 500. The mesh thickness of the obtained mesh was 38.0 μm. The obtained mesh was subjected to a rolling process to make the mesh thickness about 29 μm. The thickness of the mesh was measured with a micrometer.

And the surface which becomes a printing surface was fluid-polished, and the mesh with which the grinding | polishing amount differed was produced. And after grinding | polishing, the outer edge of the cross section which follows the III-III line | wire of FIG. 2 about each grinding | polishing amount mesh is measured using the ultra-depth color 3D shape measurement microscope VK-9500 (made by Keyence Corporation), w The values of ₁ and w ₂ were measured at five locations, and the average value of the measured values was calculated. The thickness h was measured using a micrometer at five locations, and the average value of the measured values was calculated. Table 1 shows the measurement results of h, w ₁ and w ₂ .

  Next, electrode printing was performed on the green sheet using the mesh of each polishing amount. Using a mesh of each polishing amount, an electrode of 1.0 mm × 0.5 mm was printed, and 1,000 printed states were confirmed each. The evaluation was evaluated as “◯” when 0 to 10 print pattern defects occurred, “Δ” when 11 or more and 100 or less print pattern defects occurred, and “X” when 101 or more print pattern defects occurred. The evaluation results are shown in Table 1.

As can be seen from Table 1, Examples 1 to 5 within the scope of the present invention (both (h / 2) / w _{2 have} a value of 0.61 to 0.64 and w ₁ / w _{2 has} a value of 0). .80 or less), a good result was obtained with 10 or less electrodes out of 1,000 in which a printed pattern chip occurred.

On the other hand, in Comparative Examples 1 to 3 that do not belong to the scope of the present invention (both values of w ₁ / w ₂ exceed 0.80), 11 or more printed pattern defects occurred, and in particular w ₁ / w _In Comparative Example 3 where the value of ₂ was as large as 0.96, 101 or more occurred.

In each of Examples 1 to 5, the thickness is as thin as 27.2 to 28.1 μm, and the value of (h / 2) / w ₂ is 0.61 to 0.64. When the thickness of the dried electrode was measured with a laser microscope, it was 1.0 to 1.1 μm, and a thinned electrode was obtained.

The top view which shows the outline of the screen printing plate which concerns on one Embodiment of this invention The top view which expands and shows a part of mesh 2 ((A) is a printing surface side, (B) is a squeegee surface side) The fragmentary sectional view which shows the principal part of one Embodiment of this invention The fragmentary sectional view which shows the principal part of another embodiment of this invention The fragmentary sectional view which shows the principal part of another embodiment of this invention The fragmentary sectional view which shows the principal part of another embodiment of this invention Sectional drawing which shows the state which is performing screen printing of the electrode coating material using the screen printing plate which concerns on one Embodiment of this invention Partial sectional view showing the situation where the printing surface side flat portion 7 is processed An enlarged plan view showing that the size of the flat portion on the printing surface side changes depending on the degree of polishing ((A) is when the polishing amount is small, (B) is when the polishing amount is appropriately increased)

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Screen printing plate 2 ... Mesh 3 ... Supporting member 4 ... Warp thread 5 ... Weft 6 ... Opening part 7A ... Printing surface side flat part 7B ... Squeegee surface side flat part 8 ... To-be-printed body 9 ... Space 10 ... Squeegee 11 ... Electrode paint 12 ... Emulsion

Claims (13)

A screen printing plate having a mesh formed by knitting a wire, which is parallel to the surface of the mesh on both the printing surface side and the squeegee surface side of the intersection of the wire by rolling or pressing the mesh After forming the print surface side flat portion and the squeegee surface side flat portion, the width w ₁ of the print surface side flat portion is reduced for at least the print surface side flat portion of the print surface side flat portion and the squeegee surface side flat portion. Processing is performed, and w ₁ is 0 <w ₁ ≦ 0.8w ₂ (w ₂ is the wire diameter of the wire located on the printing surface side at the intersection, and the longitudinal direction of the wire at the intersection is A screen printing plate characterized by satisfying a maximum wire diameter in a direction perpendicular to and parallel to the surface of the mesh. A screen printing plate having a mesh formed by knitting a wire, wherein the mesh is a flat portion on the printing surface side parallel to the surface of the mesh on both the printing surface side and the squeegee surface side at the intersection of the wire material and has a squeegee side flat portion, when the ShaAtsu of the mesh was _{h, 0.5w 2 ≦ h / 2} ≦ 0.7w 2 (w 2 are wires located on the printing surface side in the intersection portion And the width of the flat portion on the printing surface side that satisfies the maximum diameter in the direction perpendicular to the longitudinal direction of the wire and parallel to the surface of the mesh) at the intersection. w ₁ is a screen printing plate, wherein 0 <w ₁ ≦ 0.8w ₂ . In claim 1 or 2,
A screen printing plate, wherein a width w ₁ of the printing surface side flat portion is smaller than a width w ₃ of the squeegee surface side flat portion.   A screen printing plate having a mesh formed by knitting a wire, which is parallel to the surface of the mesh on both the printing surface side and the squeegee surface side of the intersection of the wire by rolling or pressing the mesh After forming the printing surface side flat part and the squeegee surface side flat part, at least the printing surface side flat part is processed among the printing surface side flat part and the squeegee surface side flat part, and the printing surface A screen printing plate characterized in that the side wire has a curved surface convex on the printing surface side or a polygonal shape convex on the printing surface side. A screen printing plate having a mesh formed by knitting a wire, wherein the mesh has a flat portion parallel to the surface of the mesh on the squeegee surface side at the intersection of the wire, when the thickness was _{h, 0.5w 2 ≦ h / 2} ≦ 0.7w 2 (w 2 is a wire diameter of the wire located on the printing surface side in the intersection portion, in the intersection portion, the wire The maximum wire diameter in the direction perpendicular to the longitudinal direction of the mesh and parallel to the surface of the mesh), and the printing surface side does not have a flat portion parallel to the mesh surface, and the printing surface side. A screen printing plate having a convexly curved surface or a polygonal shape convex on the printing surface side. In any one of Claims 1 thru | or 5,
A screen printing plate, wherein the wire is made of metal. A method for producing a screen printing plate having a mesh formed by knitting a wire, wherein the mesh is formed on both the printing surface side and the squeegee surface side of the intersection of the wire by rolling or pressing the mesh. After forming the printing surface side flat portion and the squeegee surface side flat portion parallel to the surface, at least the printing surface side flat portion of the printing surface side flat portion and the squeegee surface side flat portion, the width w of the printing surface side flat portion ₁ is performed, and w ₁ is 0 <w ₁ ≦ 0.8w ₂ (w ₂ is the wire diameter of the wire positioned on the printing surface side at the intersection, and the wire A method for producing a screen printing plate characterized by satisfying a maximum wire diameter in a direction perpendicular to the longitudinal direction and parallel to the surface of the mesh. In claim 7,
A process for producing a screen printing plate, wherein the process of reducing w ₁ is polishing. In claim 7 or 8,
A method for producing a screen printing plate, wherein a width w ₁ of the printing surface side flat portion is smaller than a width w ₃ of the squeegee surface side flat portion.   A method for producing a screen printing plate having a mesh formed by knitting a wire, wherein the mesh is formed on both the printing surface side and the squeegee surface side of the intersection of the wire by rolling or pressing the mesh. After forming the printing surface side flat portion and the squeegee surface side flat portion parallel to the surface, at least the printing surface side flat portion is processed among the printing surface side flat portion and the squeegee surface side flat portion, A method for producing a screen printing plate, wherein the wire on the printing surface side has a curved surface convex on the printing surface side or a polygonal shape convex on the printing surface side. In claim 10,
The method for producing a screen printing plate, wherein the processing performed on the printing surface side flat portion is polishing. In any of claims 7 to 11,
A method for producing a screen printing plate, wherein the wire is made of metal.   A method for producing an electronic component, wherein the screen printing plate according to claim 1 is used.

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