JPH07321442A - Parts number indication method of printed wiring board - Google Patents

Abstract

PURPOSE:To display a parts number at a location slightly away from parts when there are no locations for listing the parts number of the parts mounted on a printed wiring board. CONSTITUTION:A specified plurality of parts 2 mounted on a printed wiring board 1 are formed in one group, a line 3 surrounding the parts in a specific shape is printed on the printed wiring board 1 by screen printing, etc., and a shape 4 which is similar to the line 3 is printed at an empty position where no parts are mounted by screen printing, and a parts number 5 of the same parts is printed at each position corresponding to the positions of a plurality of parts inside the shape by screen printing, thus listing the parts number.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for displaying a part number of a printed wiring board.

[0002]

2. Description of the Related Art Recently, printed wiring boards are ICs and LSIs.
Components such as the above have been mounted in high density, and the intervals between the components on the substrate are extremely narrow or almost nonexistent. Therefore, the part number (reference number)
Can no longer be described near the part by a method such as screen printing. However, the part number of the part to be mounted on the board is not only an important item in the manufacturing process in terms of assembly, but it is also important for the service person to repair it after placing it in the after-service after shipping the product. is there.
Therefore, there has been a demand for a method of improving the above-mentioned blank description of the part number.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems of the prior art, and an object of the present invention is to display a part number in a vacant place where no part of the printed wiring board is mounted.

[0004]

In order to solve the above problems, according to the present invention, a line surrounding a group of a plurality of components mounted on a printed wiring board in a predetermined shape is printed on the printed wiring board, A print having a shape similar to a line surrounding the group and a part number of the part corresponding to a relative position of the part inside the shape, printed near the line surrounding the group. A method for displaying a part number of a wiring board is provided.

[0005]

According to the above structure, a plurality of predetermined components mounted on the printed wiring board are grouped into one group, and a line surrounding the group of the predetermined shape is screen printed on the printed wiring board by a method such as screen printing. Print and print a shape similar to the line by screen printing at an empty position where no parts are mounted, and screen print the part number of the same part inside the same shape at the relative position of the plurality of parts. By printing
The part number is described.

[0006]

Embodiments of the present invention will be described in detail with reference to the accompanying drawings. As shown in FIG. 1, reference numeral 1 denotes a printed wiring board, which is a single-sided board, a double-sided board, a multilayer board, or the like, and a circuit is formed by forming a pattern with a copper foil on the surface of the board. Reference numeral 2 denotes a component, which is an electric component such as an IC, an LSI, and a resistor, and is mounted at a predetermined position on the printed wiring board 1 to form a circuit. Reference numeral 3 denotes a line surrounding the group, which is drawn so as to surround a predetermined range of the component 2 with a predetermined shape, and is printed on the printed wiring board 1 by a method such as screen printing. Reference numeral 4 denotes a pattern having the same shape as the line 3 surrounding the group, which is a similar shape or a shape larger or smaller than the above shape.
The same method as described above is used to print on a place on the printed wiring board 1 where no component is mounted. Reference numeral 5 is a reference number of the component 2, which is printed on the inside of the shape 4 in a positional relationship corresponding to the component 2 by a method such as screen printing.
Reference numeral 6 denotes a component, which is mounted on the printed wiring board 1 outside the line 3 surrounding the group. 7 is the part number,
Printed in the same way as the line 3 enclosing the group with the reference number of the part 6.

In the above structure, the component 2 mounted on the upper surface of the printed wiring board 1 is closely spaced from the component 2, and the component number 5 is used.
When it is not possible to print by printing, a line 3 having a predetermined shape is printed on the outside of the plurality of components 2 by screen printing so as to surround the components 2. And line 3 that surrounds this group
However, for example, a small and similar shape 4 is printed by screen printing on a vacant place where no component of the printed wiring board 1 is mounted. Then, necessary characters such as the part number 5, the name, and the model name of each part 2 are printed on the inside of the shape 4 by screen printing in a positional relationship corresponding to the part 2. When the vicinity of the component is vacant like the component 6, the component number 7 is printed by screen printing in the vacant place.

[0008]

As described above, in the present invention, when the part number can be described only at the mounting position of the part, the part number becomes invisible when the part is mounted, and the part number is a little away from the part. The number is described and the part number is displayed in a positional relationship corresponding to the part, so that it is easy to understand.

[Brief description of drawings]

FIG. 1 is an external view showing an embodiment of a method for displaying a component number of a printed wiring board according to the present invention.

[Explanation of symbols]

 1 Printed wiring board 2 Parts 3 Lines enclosing a group 4 Shape 5 Part number 6 Part 7 Part number

Claims (3)

[Claims] 1. A line enclosing a group of a plurality of components mounted on a printed wiring board in a predetermined shape is printed on the printed wiring board, and a shape similar to the line enclosing the group and a shape of the shape. A method for displaying a part number of a printed wiring board, wherein a part number of the part is printed in the vicinity of a line surrounding the group corresponding to a relative position of the part. 2. The method for displaying a part number of a printed wiring board according to claim 1, wherein the similar shape is enlarged or reduced. 3. The method for displaying a part number of a printed wiring board according to claim 1, wherein a part name, a model name, or the like is printed in place of the part number.