JPH0669629A - Scribing equipment for ceramic boards and other circuit boards - Google Patents

Abstract

(57) [Abstract] [Purpose] When scribing ceramic boards and other circuit boards, it is possible to see the scribing parts visually.
Provided is a scribing device capable of performing accurate scribing. [Structure] A colorant 8 is applied to a cutting edge portion 4 of a scribe groove processing roller by a colorant supply device 7, and a scribe groove 1 is formed in a ceramic substrate 2 by the cutting edge portion 4 of a scribe groove processing roller and the colorant 8 is also applied. By scribe groove 1
The processing device was used to draw a scribe line on. [Effect] With the addition of a simple coloring agent supply device, the scribed groove of the designed value can be visually observed on the ceramic substrate after sintering without being affected by the variation of the shrinkage ratio in the same man-hours as the conventional one. It is visible and can be formed accurately in any color.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a scribing apparatus for processing a scribe groove for dividing and cutting a ceramic, silicon, glass substrate or the like used for a circuit board of electronic equipment.

[0002]

2. Description of the Related Art As a method for cutting and dividing a ceramic substrate or other circuit substrate into a predetermined size, as shown in FIG. 4, a proper cutting edge angle is provided at a stage of a green sheet before being sintered as a ceramic substrate. A general method is to press the blade 11 against the green sheet 9 to form the scribe groove 10 and then sinter it to obtain a ceramic substrate finished product and then divide the scribe groove.

However, in this method, since the scribe groove is formed at the stage of the green sheet, the variation in shrinkage rate generated at the time of ceramic sintering causes variations in the finished dimensions between the scribe grooves 10 shown in FIG. It could not be applied to products that require dimensional accuracy. Therefore, as a method for avoiding the dimensional variation at the time of sintering the ceramic and performing the scribing with high accuracy, the rotary roller 13 made of a hard abrasive such as diamond as shown in FIG. The ceramic substrate 12
Move the ceramic substrate 12 or the rotating roller 13 in a state of being pressed against, and form a minute scribe groove by the rotating roller 13 made of an abrasive on the surface of the ceramic substrate, and then apply bending stress with the scribe groove on the outside. There was a method of dividing the ceramic substrate by.

[0004]

However, among the above-mentioned conventional methods, the method shown in FIG. 6 has good dimensional accuracy, but since the scribe groove is formed by rolling pressure bonding of a rotating roller made of an abrasive, the method shown in FIG. Scribe groove as shown in 8
The shape of No. 10 had a groove width of about 20 μm, which was very narrow, and almost no scratch was formed on the ceramic substrate.

Therefore, the scribe groove was completely invisible to the naked eye and was hardly visible even when observed with a microscope. Therefore, it was confirmed whether or not the scribe processing was definitely formed, and the size of the scribe processing location. When measuring the accuracy or dividing the substrate, which is the original purpose, there is a fatal problem that the work is very difficult because the scribe groove to be divided cannot be seen.

An object of the present invention is to solve the above problems, and to provide a scribing apparatus capable of forming a scribing groove having a good outer diameter accuracy and easily forming a scribing groove which can be clearly visually recognized. It is provided.

[0007]

In order to achieve the above object, in the first aspect of the invention, a ceramic substrate or other circuit board is made of diamond or other hard abrasive material for forming scribe grooves, and is pivotally supported by a holding portion. Scribing device for a ceramic substrate or other circuit board, which comprises a scribing groove processing roller and one or a plurality of coloring agent supply devices provided so as to apply the coloring agent to the cutting edge portion when the scribing groove processing roller is rotated. And

In the second aspect of the invention, the scribing apparatus is a pencil-type small scribing apparatus for ceramic substrates and other circuit boards. Further, in the third invention, a scribing apparatus for a ceramic substrate or other circuit board using iron oxide, chromium oxide, cobalt or other transition metal as a pigment as a colorant is used.

[0009]

In the first aspect of the present invention, since the scribing groove and the scribing line are drawn by the same scribing roller, both can be formed at completely coincident positions. In addition, since the coloring agent is applied to the cutting edge portion when the scribe groove processing roller is rotated and the cutting edge is only slightly pressed onto the ceramic substrate, the drawing line width of the scribe line by the coloring agent is a fine line within several tens of microns. Can be

Further, according to the second aspect of the present invention, the pencil-type compact structure allows the scribe line to be drawn by hand. Furthermore, according to the third invention, any color can be selected as the colorant, and if a transition metal such as iron oxide, chromium oxide, or cobalt is used as the pigment, the ceramic substrate is treated at a high temperature of about 900 degrees after the scribe line drawing. However, you can make sure the scribe line does not disappear.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a scribing apparatus according to an embodiment of the present invention. Reference numeral 1 is a scribe groove, 2 is a circuit board such as a ceramic substrate, and includes a substrate such as a silicon substrate or a glass substrate. Reference numeral 3 is a scribing groove processing roller, and 4 is a cutting edge portion of the scribing groove processing roller. The scribing groove processing roller 3 is made of a hard abrasive such as diamond and is rotatably attached to the scribing groove processing roller holding portion 6 by a shaft 5. 7 is a colorant supply device, which has a sponge body structure for holding the colorant inside, and various types such as a pen, a brush, a cassette, a tube, and a pipe can be considered.
Transfer the colorant 8 to the scribe groove processing roller cutting edge 4,
Make the shape easy to apply. The colorant 8 may be liquid, solid, powder, or the like, and any color can be selected.

The colorant may be water-soluble, oil-based, or a transition metal such as iron oxide, chromium oxide, or cobalt which reacts with the ceramic to obtain a desired color by firing the ceramic. The scribe line may be erased, may be left, or may be selected depending on the use of the object to be processed such as a material that does not disappear even if it is baked at about 900 degrees. The colorant transferred and applied to the periphery of the cutting edge portion 4 of the scribing groove processing roller 3 presses the cutting edge portion 4 of the scribing groove processing roller 3 onto the ceramic substrate 2 to rotate the scribing groove 1 on the surface of the ceramic substrate. At the same time as forming, colorant 8
Is transferred and drawn in the scribe groove 1. The drawn scribe line becomes a very clear fine line with a line width within several tens of microns, and is drawn on a line that completely coincides with the scribe groove 1.

A plurality of colorant supply devices may be arranged at a position where they can be easily replaced, and a plurality of colorant 8 may be arranged as shown in FIG. Note that this scribing device for ceramics or the like can be applied to an automatic control device having a high processing accuracy, but it may be a small pencil type that can be held in a hand.

[0014]

As described above, according to the present invention, by adding a simple device, the number of man-hours is exactly the same as the conventional one, and
Since the scribed groove can be precisely designed in any color that can be visually recognized without being affected by the variation in shrinkage ratio on the ceramic substrate after sintering, the conventional scribed groove is not visible. The various problems can be solved at once and the following effects can be obtained. (1) The scribe line is drawn at the same time as the groove processing by the scribe processing roller, so if the line is drawn, it is guaranteed that the scribe processing is definitely performed. Only with supervision, the inspection will be much easier. (2) To check the accuracy of scribing, the distance between the scribe grooves is measured.The scribe groove and the scribe line are exactly the same, and the line width of the drawn scribe line is a few tens of microns. Therefore, it is possible to measure and manage dimensions with high accuracy. (3) The scribe line, which could not be visually recognized with conventional eyes, can be clearly seen, which makes the substrate dividing work very easy. (4) The color of the scribe line can be arbitrarily selected depending on the type of colorant, and the color can be removed by washing after dividing the substrate, or conversely, it can be erased even by baking at a high temperature of about 900 degrees. It is possible to process the scribe line according to the application of the ceramic substrate and increase the commercial value of the ceramic substrate.

[Brief description of drawings]

FIG. 1 is a front view of a main part of a ceramic substrate scribing apparatus showing an embodiment of the present invention.

FIG. 2 is a side view of the same part.

FIG. 3 is a side view of an essential part showing another embodiment of the present invention.

FIG. 4 is an explanatory view of a main part showing an example of a conventional scribing method.

FIG. 5 is a perspective view of a scribed ceramic substrate.

FIG. 6 is a front view of a main part showing another embodiment of a conventional scribing method.

FIG. 7 is a side view of a main part showing another embodiment of the related art.

FIG. 8 is an explanatory view of a scribe groove formed in another conventional example.

[Explanation of symbols]

 1 Scribing Groove 2 Ceramic Substrate 3 Scribing Grooving Roller 4 Cutting Edge of Scribing Groove Roller 5 Shaft 6 Scribing Groove Roller Holding Part 7 Colorant Supply Device 8 Colorant

Claims (3)

[Claims] 1. A scribing groove processing roller which is made of a diamond or other hard abrasive material for forming a scribing groove on a ceramic substrate or other circuit board and is supported by a holding portion, and a cutting blade when the scribing groove processing roller is rotated. A scribing device for a ceramic substrate or other circuit board, which comprises one or a plurality of colorant supply devices provided so as to apply a colorant to a portion. 2. The scribing apparatus for a ceramic substrate or other circuit board according to claim 1, wherein the scribing apparatus is constructed in a small pencil type. 3. The scribing apparatus for a ceramic substrate or other circuit board according to claim 1, wherein iron oxide, chromium oxide, cobalt or another transition metal is used as a pigment as a colorant.