JP4835431B2 - Wiring board and manufacturing method thereof - Google Patents

Description

  The present invention relates to a wiring board on which a display unit including a manufacturing month display and the like is formed, and a method for manufacturing the wiring board, and is useful as a technique for easily and accurately displaying information related to the manufacturing time of the wiring board in a compact manner. .

  Conventionally, in order to make it easier to investigate the cause when a failure occurs in an electrical product and to keep the scope of failure countermeasures to the minimum necessary, the date of manufacture such as the year of manufacture, month, etc. has been displayed on the wiring board. Yes. Such production time indication is literally stamped with ink using an insulating resin, or a certain mark is printed using an insulating resin, or a conductive material. This was done by forming some kind of mark.

  However, with the recent increase in the density of wiring boards, the number of places for display on the wiring board has decreased, and the need to reduce the display area has arisen. For this reason, in the conventional display method, it has become difficult to form and interpret fine characters and marks.

  Therefore, in Patent Document 1 below, a predetermined figure is created, a sheet-like screen is formed in which the figure opens in a plane, and the manufacturing time of the wiring board, for example, the year, month, and month There is a wiring board manufacturing time display method that closes an opening at a specific position in a predetermined figure on the screen corresponding to the middle or late and screen prints the manufacturing time on the wiring board using the screen. It is disclosed.

  Furthermore, as what can respond to a small space, as shown in FIG. 4, the following Patent Document 2 includes a pattern having a plurality of spot portions 10 and 11 arranged in a predetermined arrangement within an outline of a predetermined shape. A figure F is created, a sheet-like printing screen is formed such that the spot parts 10 and 11 of the pattern figure F are opened in a plane, and the specific spot part 10 of the printing screen corresponding to the production time is formed. , 11 is closed, and then the printed circuit board is used to print the printed spot portions 10 and 11 of the pattern figure F using the printing screen. Further, in this display method, the number N (to be described later) of the wiring board is displayed in the center portion.

  However, in the conventional display method described in the above publication, since the dot corresponding to each month is provided, the display size cannot be made sufficiently small, and the display size of the number of impositions (this size is constant). More than ten times as much space as the standard). For this reason, it cannot sufficiently cope with the recent miniaturization and high density of the wiring board, and the display method described above may not be able to display on the wiring board.

JP-A-8-64991 Japanese Patent Laid-Open No. 10-247771

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a wiring board that can display information relating to manufacturing time in a compact, simple and accurate manner even when only a small space close to a square is available, and a manufacturing method thereof.

The above object can be achieved by the present invention as described below.
That is, the wiring board according to the present invention is a wiring board on which a display unit including at least a monthly display is formed, and the display unit includes a vertex part arranged near the vertex of a substantially square and a side part arranged near the four sides. The monthly display is performed by a combination of the presence / absence of partial display of the apex portion and the presence / absence of partial display of the side portion.

  According to the wiring board of the present invention, since the monthly display is performed by the combination of the presence or absence of partial display of the apex portion and the side portion arranged in a substantially square shape, even when only a small space near the square is vacant The information about the production time can be displayed in a compact manner. At that time, since the presence / absence of partial display of the apex portion and the side portion is used, the display becomes simple, and more than 12 combinations are possible, so that the manufacturing month can be accurately displayed.

  In the above, it is preferable that the display unit has a display of an imposition number and / or an intra-monthly period in a region surrounded by the vertex part and the side part. Thereby, it is possible to further display the number of impositions and / or the monthly period without increasing the area of the display area.

  Further, it is preferable that two of the apex portions are used for displaying the monthly degree and the rest are used for displaying other information. With this configuration, other information such as line direction, line classification, semi-finished product, and product finish can be further added.

  On the other hand, the method for manufacturing a wiring board according to the present invention is a method for manufacturing a wiring board having a step of forming a display unit including at least a monthly display, wherein the display unit has a vertex portion arranged near the vertex of a substantially square, A step of performing the monthly display by a combination of the presence / absence of partial display of the apex portion and the presence / absence of partial display of the side portion. .

  According to the method for manufacturing a wiring board of the present invention, since the monthly display is performed by the combination of the presence or absence of partial display of the apex portion and the side portion arranged in a substantially square shape, only a small space close to a square is vacant. Even when there is not, information on the production time can be displayed in a compact manner. At that time, since the presence / absence of partial display of the apex portion and the side portion is used, the display becomes simple, and more than 12 combinations are possible, so that the manufacturing month can be accurately displayed.

  In the above, in the step of forming the display portion, printing with ink may be performed using a printing mask in which a vertex portion arranged near the vertex of a substantially square and a side portion arranged near the four sides are opened. preferable. According to this method, a print mask having a basic pattern of the display unit is used, and information about the production time is obtained in the same manner as in the conventional printing process on a wiring board by making a slight change to this. Compact, easy and accurate display.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an explanatory diagram for explaining an example of a display unit of a wiring board of the present invention, and FIG. 2 is a plan view of a main part showing a specific example of the display unit of the wiring board of the present invention.

  As shown in FIG. 2, the wiring board of the present invention has a display portion FP including at least a monthly indication (vertex portion 1, side portion 2). In the present embodiment, an example of a wiring board having an imposition number display 3, an intra-monthly time display 4, a line direction display 5 and a line segment display 6 in addition to the monthly display is shown.

  The wiring board may be of any type as long as it has at least a monthly display, and may be a single-sided wiring board, a double-sided wiring board, a multilayer wiring board, a flexible wiring board, or the like. The display unit FP may be formed at any position on the wiring board. For example, the display unit FP is formed near the four corners, the four sides, or the circuit pattern on one side of the wiring board.

  The display unit FP includes a vertex portion 1 arranged near the vertex of a substantially square and a side portion 2 arranged near the four sides as in the basic pattern shown in FIG. This basic pattern is a virtual display pattern to which display information is not added. As shown in FIGS. 2A to 2C, the display unit FP displays whether or not the vertex portion 1 is partially displayed. Monthly display is performed in combination with the presence or absence of partial display of part 2.

  The display shape of the apex portion 1 may be any shape such as a circle, a square, a triangle, and other polygons. However, it is preferable that the display shape of what is used for monthly display (in the illustrated example, the upper right apex portion 1a and the lower right apex portion 1b) is different from the display shape.

  The display shape of the side portion 2 may be any shape such as a rectangle, an ellipse, a straight line, and a wavy line, and may be a shape in which a plurality of figures (for example, a circle and a square) are arranged on one side. However, the display shapes of the apex portion 1 and the side portion 2 are preferably those that do not overlap each other from the viewpoint of display visibility and print mask manufacturability.

  In the present embodiment, as shown in FIG. 1, the side portions 2 a to 2 d arranged near the four sides of a substantially square correspond to three moon degrees, respectively. Specifically, the upper side portion 2a is in January, May, and September, the right side portion 2b is in 2, 6, and October, the lower side portion 2c is in 3, July, and November, and the left side portion 2d is Corresponding to April, August and December respectively.

  Further, the vertex portion 1 arranged in the vicinity of the vertex of the substantially square corresponds to the monthly degree division, and for example, 1 corresponding to the side portion 2a depending on the combination of the presence or absence of the upper right side vertex portion 1a and the lower right side vertex portion 1b. Decide which one to display from May, September. Specifically, when there is an upper right apex portion 1a and a lower right apex portion 1b, it is a monthly degree division for January to April, and there is no upper right apex portion 1a and there is a lower right apex portion 1b. Monthly division for -August, and when there is no upper right vertex 1a and lower right vertex 1b, the monthly division is September-December.

  In the example shown in FIG. 2A, since there is no upper side portion 2a, any one of 1, 5 and 9 months is shown, and since there is an upper right side vertex portion 1a and a lower right side vertex portion 1b, 1 Since it is in the monthly division of ~ April, production in January is displayed.

  In the example shown in FIG. 2A, “2” is displayed in the imposition number display 3, indicating that the imposition number is two. The number of impositions is displayed when a plurality of small wiring boards (for example, eight) are formed on a single large wiring board (for example, a work size at a wiring board manufacturer or a collective wiring board). The imposition number is 1 to 8 (or A to H). By displaying the number of impositions in this way, if a defect occurs in one small wiring board, it is possible to immediately know where the wiring board is in the large wiring board. . Further, the number of impositions may be further subdivided, and “2-a” or the like may be displayed on the display 3. Further, instead of the imposition number display 3, it is possible to attach other character information or the like.

  Moreover, in the display 4 of the monthly period, since there is only the middle display 4b among the upper, middle and lower, it is displayed that the production is in the middle of January. In addition, information regarding the line direction display 5 and the line segment display 6 is displayed. In this example, the line direction display 5 displays the direction of the vertex of the triangle as the downstream side of the line. The fact that the line segment display 6 is square indicates that it is a semi-finished product, for example.

  In the example shown in FIG. 2B, since there is no right side portion 2b, any one of 2, 6, and 10 months is shown, and there is no upper right side vertex portion 1a and there is a lower right side vertex portion 1b. Since it is in the month of August, it is displayed that production is in June. As for the display 4 of the monthly period, since there is only the upper display 4a among the upper, middle and lower, it is displayed that the production is in the beginning of June.

  In the example shown in FIG. 2C, since there is no left side portion 2d, any one of April, August, and December is shown, and since there is no upper right side vertex portion 1a and lower right side vertex portion 1b, 9 to Since it is in the month level of December, it is displayed that production is in December. As for the display 4 of the monthly period, since there is no lower display 4c among upper, middle and lower, it is displayed that the production is in the late December.

  In the present embodiment, the display unit FP has displays 3 and 4 of the imposition number and the monthly time in the area surrounded by the vertex portion 1 and the side portion 2, but in the present invention, these displays are displayed. 3, 4 may not be attached, and only the display 3 of the number of impositions or the display 4 of the monthly period may be attached.

  The imposition number display 3 may be given a number as it is, but may be given an alphabet or a symbol. The monthly timing display 4 is not limited to the upper, middle, and lower divisions, and may be divided for each week.

  In the present embodiment, two of the vertex portions 1, the upper right vertex portion 1 a and the lower right vertex portion 1 b, are used for monthly display, but two different ones of the four vertex portions 1 are displayed monthly. May be used for Also, three of the four vertex portions 1 (vertex portions 1a to 1c) may be used for monthly degree display, and each may correspond to the three monthly degree divisions (see FIG. 3A).

  In addition, four of the side portions 2 are used for monthly display, but three of the four side portions 2 (side portions 2a to 2c) may be used for monthly display (FIG. 3B). )reference). In that case, the monthly degrees shown in FIG. 3B are assigned to the side parts 2a to 2c, and the monthly degree divisions divided into four are assigned to the vertex parts 1a to 1c. The assignment to the vertex portions 1a to 1c is, for example, that the absence of only the vertex portion 1a corresponds to the monthly division of March to March, the absence of the vertex portion 1b corresponds to the monthly division of April to June, and only the vertex portion 1c. The absence may correspond to the monthly division of July to September, and the absence of only the vertex portions 1a and 1b may correspond to the monthly division of October to December.

  In the present embodiment, the remainder of the apex portion 1 is used to display other information, but in addition to the line direction and line classification, information such as a semi-finished product and product finish is attached. May be. Further, in the example shown in FIG. 3B, other information may be attached to the left side portion 7 that is not used as the monthly display.

  Since the display unit FP in the present invention can display a monthly display in a compact manner, the display unit FP can be stored in a square with a side of 7 mm, and preferably is stored in a square with a side of 4 to 6 mm. is there.

  The wiring board of the present invention as described above can be suitably manufactured by the manufacturing method of the present invention. That is, the manufacturing method of the present invention is a method of manufacturing a wiring board including a step of forming a display unit FP including at least a monthly display, wherein the display unit FP includes an apex portion 1 arranged near the apex of a substantially square, Including a side portion 2 arranged in the vicinity of four sides, and the step of performing the monthly display by a combination of the presence / absence of partial display of the vertex portion 1 and the presence / absence of partial display of the side portion 2 Features.

  Examples of the method for forming the display portion FP include a method of printing with an ink using an insulating resin, a method of displaying using a solder resist, and a method of forming with a conductive material in the same manner as a circuit pattern. In addition to the method for forming the display portion FP in one step as described above, a method for forming the display portion FP in two steps can be employed.

  As a method for printing with ink, as shown in FIG. 1, a printing mask having a basic pattern in which a vertex portion 1 arranged near the vertex of a substantially square and a side portion 2 arranged near the four sides is used is used. It is preferable to do this. By using a printing mask having a basic pattern of the display portion and making a slight change to this, the display portion FP is formed by printing with ink in the same manner as a conventional printing process on a wiring board. be able to. The printing mask includes a screen for screen printing.

  Examples of the method for changing the printing mask include a method of partially closing the opening of the printing mask by resin coating, film lamination, double masking, or the like.

  As a method of using the solder resist, when the solder resist is formed in a pattern, the display portion FP may be formed by the same method, for example, photolithography.

  As a method of forming the conductive material, the display portion FP may be formed by a method similar to the formation of the circuit pattern, for example, an additive method, a semi-additive method, an etching method, or the like.

  As a method of forming in two stages, a basic pattern as shown in FIG. 1 is formed in advance as a base display portion, and an additional display portion for erasing a part thereof is printed, and the display portion FP is formed. The method of forming is mentioned. Specifically, when the circuit pattern of the wiring board is formed, the base display unit that is the basic pattern is formed with the same conductor as the circuit pattern, and the additional display unit covers a part of the base display unit in the printing process. A method of printing with ink.

  As a method of printing with ink, a method of directly drawing without using a mask or the like is also possible. In that case, for example, an ink jet printer, a plotter, an ink dispenser, or the like can be used.

Explanatory drawing for demonstrating an example of the display part of the wiring board of this invention The principal part top view which shows the specific example of the display part of the wiring board of this invention The principal part top view which shows the other example of the display part of the wiring board of this invention Main part plan view showing an example of a display part of a conventional wiring board

Explanation of symbols

1 vertex (monthly display)
2 sides (monthly display)
3 Display of the number of imprints 4 Display of the time within the month 5 Line direction display 6 Line division display FP display section

Claims (5)

In a wiring board on which a display unit including at least a monthly display is formed,
The display unit includes a vertex portion arranged near the vertex of a substantially square, and a side portion arranged near the four sides, and the presence or absence of partial display of the vertex portion and the partial display of the side portion. The wiring board is characterized in that the month display is performed in combination with presence or absence.   The wiring board according to claim 1, wherein the display unit has a display of the number of impositions and / or the time within a month in a region surrounded by the vertex part and the side part.   3. The wiring board according to claim 1, wherein two of the apex portions are used for displaying the month and the rest are used for displaying other information. In a method for manufacturing a wiring board having a step of forming a display unit including at least a monthly display,
The display unit includes a vertex portion arranged near the vertex of a substantially square, and a side portion arranged near the four sides, and the presence or absence of partial display of the vertex portion and the partial display of the side portion. A method of manufacturing a wiring board, comprising a step of displaying the month according to a combination of presence and absence.   5. The step of forming the display unit performs printing with ink using a printing mask having openings of apex portions arranged near the apexes of a substantially square and side portions arranged near the four sides. A method for manufacturing a wiring board.

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