JPS5978346A - Plotting method of punching cut mask - Google Patents

Abstract

PURPOSE:To form a punching cut mask in an extremely short time without requiring the long-time effort of a skilled person by projecting an image of a drawing original upon a coordinate read part, and inputting its positions along a punching line by using an indicating tool. CONSTITUTION:The image of the drawing original 1 is projected on the coordinate read part 3. Then, the coordinate read part 3 is an XY digitizer and reads coordinate positions indicated on the drawing original 1 by the indicating tool 8. Then, drawing information is read out of a floppy disk device 9 through an arithmetic device 6 and passed to a plotting controller 5 to obtain a punching cut mask 2 with a sufficiently smooth curve at a plotting part 4. Therefore, this method eliminates the need for the long-time effort of a skilled person and manufactures the punching cut mask in an extremely short time.

Description

[Detailed Description of the Invention] In the conventional method of creating a cutout mask, the cutout is cut directly onto the peel-coated film using a cut knife, but instead of creating a black and white block with Camerawake, using photomask ink to determine the cutout area by looking at the design, and filling it in with Camerawake. The process of creating a cut-out mask used to require skilled workers to cut or fill in and separate the parts, and also required camera work.

In the past, skilled workers spent long hours and labor, and it was not always possible to create clean cut-out masks.

The present invention solves these conventional drawbacks, and allows a worker to easily create a clean cutout mask by reading coordinate information in a rough sequence of points along the line to be cut out from a design document. It is related to Kanoto and the method by which it can be drawn.

The present invention will be explained in detail with reference to the drawings below. The original manuscript (1) created in FIG.
3) Project on top. The coordinate reading section is an XY digital tile, and is configured to indicate the position to be read on the original document (1) using a pointing tool (8), and to read the coordinate position.

Along the pattern to be created on the pattern manuscript (1), arbitrary points P1 to P8 are read by the coordinate reading unit (3) and memory (
The force is stored sequentially (see Figure 2).

It is assumed that the 17J44 vote P9 is the same as the starting point P1.

When a line (curve) passing through each point sequence is drawn by the arithmetic unit (6) for the coordinate point sequence stored in the reading memory (7), the slope of the line changes at each point after passing through each point. In order to be able to draw a line for each point such that 0 becomes 0, each point is divided into M divisions and the coordinate point sequence is calculated.

This results in a sufficiently smooth curve passing through each point (cutting line). The sufficiently smooth cutout line draft obtained by the calculation is converted to the coordinate point sequence of ~P8+n, and the scale conversion is calculated to obtain the final drawing coordinates of P'~P.
'1.0 Coordinate point sequence is stored in the reading memory (7).

Controller (5) to draw a column to each coordinate of P'1 to P'
Convert it to drawing information of floppy disk device tS++
to be memorized.

By drawing out the drawing information stored in the floppy disk device (9) through the arithmetic unit (6) and passing it to the drawing controller (5), the drawing section (4) can cut out a sufficiently smooth curve. Cut mask (2) is completed.

As described above, according to this method, the operator does not need to be an expert, and anyone can create a clean cut mask, and the rough points on the cutting line can be read sequentially without the need for camera work. By doing so, it is possible to create a cut mask in an extremely short time.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and Fig. 1 is a block diagram of a drawing device used in the present invention, and Fig. 2 is an explanatory diagram simulating graphic processing for one drawing and one pattern. be. (1) is the projected pattern, (2) is the cutout mask, (:3
11 is the F1 mark reading section, (4) is the cant mask drawing section,
(5) is a drawing controller, (6) is a calculation device, (7)
is a reading memory, and (8) is a reading instruction tool.

Claims (1)

[Claims] 1) Project the design original for creating a cutout mask onto the coordinate reading unit, follow the cutout line, input its position using a pointing tool, store the coordinate information in the reading memory as point sequence information, and then Call up the point information, call up the drawing/shape information from the floppy disk device in which pre-prepared drawing information is recorded, control this information with the drawing controller, and create a cutting mask in the drawing section. A method for drawing a cut-out mask that is characterized by the following.