JPS61183995A - Printed circuit board making system - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field of the Invention) The present invention provides a printed circuit board in which a thin film substrate pattern can be directly created by supplying a circuit pattern of the printed circuit board created with a CAD system to a printed circuit board creation machine. Regarding the creation system.

(Technical background of the invention and its problems) When creating a printed circuit board, conventionally, the circuit pattern of the printed circuit board was generally created by hand, and the circuit diagram was compared with the pattern before plate making. A printed circuit board is created by printing the printed circuit board onto a substrate made of epoxy resin, forming a circuit pattern by photo-etching, and then drilling or through-holes. In addition, with the development of computer technology in recent years, CAD (Computer
2. Description of the Related Art Systems using CAD systems have been widely used, and systems for creating circuit patterns for printed circuit boards using CAD systems have also been proposed. However, in the conventional system, the CAD system is not directly connected to the printed circuit board making machine, but the circuit pattern of the printed circuit board created with the CAD system is drawn on a photoplotter to create a plate, and from this plate making, as mentioned above, The printed circuit board is then baked to form a pattern layer on the board, and then the printed circuit board is created through processes such as drilling and through holes. For this reason, even when using an expensive CAD system, a considerable amount of time and effort is required to create a printed circuit board, and there is a strong demand for shorter delivery times and lower prices, and the demand for printed circuit boards is increasing. With this, the need for small 051) is increasing, and there is a desire for a system that can be easily produced not only by printed circuit board manufacturers who have equipment suitable for mass production but also by artwork manufacturers.

(Object of the invention) This invention was made under the above circumstances,
The purpose of the present invention is to provide a printed circuit board production system that connects a simple CAD system to a printed circuit board production J& machine and enables printed circuit boards to be produced in a short time and at low cost.

(Summary of the invention) This invention relates to a printed circuit board production system.
Data input device 9 comprises a CPU connected to ROM and RAM as well as a display device and an output device, and creates a circuit pattern of a printed circuit board by operating the data input device according to the display on the display device.
The AD system consists of a substrate film wound around a roll, a drum that stretches the substrate film as it rotates, and a conductive metal film that is placed on the drum to stretch the substrate film. A printed circuit board is created using a nozzle section that releases an aqueous salt solution and a reducing agent solution to cause a metal precipitation reaction by reduction, and a control section that scans and controls the nozzle section according to circuit pattern information created with the CAD system. This machine is configured to create a circuit pattern created by the Goki CA system on the above-mentioned board film as a thin III board pattern. The conductive metal salt and reducing agent used herein include all those commonly used in chemical reduction plating. Further, as a third component, a catalyst such as palladium that promotes chemical reduction plating and a surfactant that stabilizes the liquid may be included.
Note that it is desirable to incorporate into this system a process for removing unnecessary salts other than gold Ii and generated by the chemical reaction, such as a water washing process.This is repeated in order to create a thick metal film with low sheet resistance. This is particularly effective when releasing

(Embodiment of the Invention) FIG. 1 shows an example of the configuration of a CAD used in the printed circuit board production system of the present invention, in which a keyboard 2 as a data input device is mounted on a desk l. A mouse 3 is placed, and furthermore, a CRT 4 as a display device and a plotter 5 as a data output device are placed. In addition, computer systems such as CP■, ROIIII, and RAM are housed in the main unit 6 of the desk L, and a floppy disk (FD) can be inserted and removed from the front to record and store data. A floppy disk device 7 is provided. Further, a printer 8 as a data output device is installed adjacent to the desk 1, and each device is interconnected via a path line 9 as shown in FIG. Further, the display on the CRT 4 is as shown in FIG. 3, for example.

A point 4B where two cursor lines intersect is used to indicate the display of the menu 4A, and the cursor point 4B can be moved to an arbitrary position by moving the mouse 3.

Here, CPU in one main body part 6 is! It only needs to be about 8 bits, and the memory (ROM, RAM) is about 1 megabyte for program and data processing, and GRT4 is designed to display the wiring pattern of the printed circuit board and various information. The keyboard 2 is used for inputting character information, and the mouse 3 is used mainly for graphic input and menu selection as shown in FIG. Furthermore, the printer 8 is designed to output various information related to the production of printed circuit boards, such as a list of parts used, working hours, etc., and the plotter 5 is used for graphic output, outputting circuit pattern diagrams, and printing out a floppy disk. The disk unit R7 is used in two ways: inputting a library, etc., outputting a pattern, and outputting data to the plotter 5 and printer 8.

On the other hand, FIG. 4 shows a configuration in which the above-mentioned CAD system is connected to a printed circuit board making machine 920, and the printed circuit board making machine 20 has a rotationally driven drum 24 as shown in FIG. , a cutter 23 is placed on this drum 24.
The substrate film 21A cut to a predetermined length is stretched. The substrate film 21 is roll 2
2, which is cut into a predetermined length by a cutter 23, and whose tip is inserted into a clasp 24A to be stretched on a drum 24-L. Silver nitrate was used as the aqueous salt solution, and formaldehyde aqueous solution was used as the reducing agent solution. drum 24
Two nozzles 26 are provided on the front surface of the nozzle 2B, and a silver nitrate tank 27 and a formaldehyde aqueous solution tank 28 are connected to the nozzle 2B, and a silver nitrate aqueous solution and a formaldehyde aqueous solution are applied to the substrate film 21A from the tip thereof. It is supposed to be released. Further, the film on which the circuit pattern has been formed on the drum 24 is sent to the next process via a transport mechanism 25. The nozzle 2B is controlled by a control unit 30 to scan the film 21A and to discharge the silver nitrate aqueous solution and the formaldehyde aqueous solution.

The operation of this configuration will be explained with reference to FIGS. 6 and 7.

The floppy disk FDI has data such as circuit patterns, component symbols, standards, wiring clothing, etc. recorded in advance as a library, and the floppy disk FDI is installed in the floppy disk device 7 to create a pattern (step St).
In this case, the data for the wire clothing is input from the keyboard 2, and the pattern is created using a library while mainly operating the mouse 3 and looking at the CRT 4. here,
The input processing software shown in FIG. 6 interfaces with the hardware, and uses the keyboard 2, which is the input hardware. An input processing program exists for each of the mouse 3 and the floppy disk device 7,
Input analysis analyzes the data that comes in from the input processing program, and processes whether it is pattern creation, parts list, library processing, wiring list check, work time calculation, etc.
Processes such as conversion are identified and execution data is passed to each processing step. The internal processing program performs various processes such as creating a pattern creation 9 parts list, checking the wiring list, calculating the working time, and converting, and the output results of each process are passed to the output processing program and output to the CRT4.
．． For plotters, enlargement or reduction processing is performed, and for others, each input/output is checked. still,
The check (step S4) can be performed manually or by CA from the pattern plot and the error list of the cloth.
Check using D's CRT4. The pattern data is stored on floppy disk FD2.

Then, it is determined whether or not there is an error (step S5).
If there is an error, return to step S1 and repeat the above operation, or if there is no error, input the pattern data created and stored in the floppy disk FD3 to the printed circuit board creation machine 20. Perform data conversion to data suitable for the format (step S8),
The printer 8 prints out the parts list, and the data for creating the printed circuit board is recorded on the floppy disk FD4.
The data on this floppy disk FD4 is applied to the print making machine 20 in batch processing or online.

Note that the output processing software interfaces with each output hardware, converts the data passed from the internal processing into a form suitable for each hardware, and outputs the data.

, 1- The circuit pattern data for the printed circuit board from the CAD system created as described above is printed offline or online (4 is received in the temporary creation machine 20,
Printing (temporary work J&A 20 is from roll 22) ^ Board film 21 is fed J11. It is cut to a predetermined length with a cutter 23 and then stretched onto a drum 24-L via a clasp 24A. Thereafter, the control The nozzle 2B is controlled through the part 30, and the silver nitrate aqueous solution 27 and the formaldehyde aqueous solution 28 are
At the same time, a substrate pattern is formed on the film 21A according to the sent pattern data.

In this case, a silver mirror is generated on the film 21A l- by the redox reaction between the silver nitrate aqueous solution, hol L, and aldehyde aqueous solution, and a circuit pattern made of a conductive material is formed on the fills L and 21A. The +12 printed ti board (film) with the circuit pattern formed in this way is
The next film is transported by the transport mechanism 25 to the point where parts are to be mounted, etc., and the next film stretched over the drum 24 is formed with a circuit pattern in the same manner as described above.

(Effects of Issue 151) As described above, the printing of this invention (according to the temporary creation system, it is possible to print with a relatively easy operation on a CAD system), (the board pattern can be created in a short time,
By sending the created pattern data to a printed circuit board making machine, it is possible to automatically create a thin film printed circuit board, making it possible to extremely streamline the time and labor required from one drawing to printing (to manufacturing a board). .

[Brief explanation of the drawing]

Figure 1 is an external configuration diagram of the CAD system used in this invention, Figure 2 is its internal configuration diagram, Figure 3 is a display example of a CRT. The figure is a block diagram of the printing machine used for this departure 1! 1, Figure 6 is a diagram of the software structure of this invention, and Figure 7 is a processing flow diagram of the CAD system of this departure 1. ...Desk, 2...Keyboard, 3...Mouse. 4...CRT, 5...Plotter, 6...Device body, ?...Floppy disk device, 8...Printer, 9...Pass line, 20...Printed circuit board making machine, 21...], Ti plate Ti plate rum, 22...Roll, 24...Drum, 2B...Nozzle, 27...
・Silver nitrate aqueous solution tank, 28...Pol-11 aldehyde aqueous solution tank. Applicant's agent Yu Yasugata 3rd figure 2 Hitsuji 3 Kakutari 4 Figurine 5 Dodo QA Fig. 7

Claims (1)

[Claims] A CPU that has a data input device, a display device, and an output device, and is connected to ROM and RAM, and creates a circuit pattern of a printed circuit board by operating the data input device according to the display on the display device.
The AD system consists of a substrate film wound around a roll, a drum that stretches the substrate film as it rotates, and a conductive metal film that is placed on the drum to stretch the substrate film. A printed circuit board is created using a nozzle section that discharges an aqueous salt solution and a reducing agent solution to cause a metal deposition reaction by reduction, and a control section that scans and controls the nozzle section according to circuit pattern information created by the CAD system. 1. A printed circuit board production system, characterized in that the circuit pattern created by the CAD system is created as a thin film board pattern on the board film.