JPS63113540A - Method for coating photosensitive resin - Google Patents

Abstract

PURPOSE:To permit reduction of the amt. of a photosensitive resin to be used by imposing a frame body having nearly the same contour shape as the contour shape of a substrate on the substrate, pouring a prescribed amt. of the photosensitive resin liquid on the substrate enclosed with the frame body and diffusing and coating said liquid on the substrate. CONSTITUTION:The substrate 12 which is an object to be treated and the frame body 13 made of a stainless steel or the like having nearly the same contour shape as the contour shape of the substrate are imposed on a support 11 having cruciform supporting bars 10. Positioning pins 14 are then advanced to integrally fix the substrate 12 and the frame body 13 and the prescribed photosensitive resin liquid 16 is poured onto the surface of the substrate 12 from a beaker 15. After the prescribed amt. of the photosensitive resin liquid 16 is poured, the heights at the four corners of the substrate 12 are changed so that the resin liquid 16 is spread over the entire surface of the substrate 12. The frame body 13 is then removed and the substrate 12 is integrally rotated by the support 11 to diffuse the poured resin liquid 16 over the entire front surface of the substrate 12. The reduction in the amt. of the photosensitive resin liquid to be used is thereby permitted.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a method for coating a photosensitive resin.

[Prior art and its problems] Conventionally, when manufacturing a liquid crystal filter, as shown in FIG. Next, a predetermined photosensitive resin liquid 5 is injected onto the substrate 2 from the beaker 4, and is diffused over the entire surface by changing the horizontal height of the four corners of the substrate 2. After that, the substrate 2 is moved at high speed. The photosensitive resin was applied in a thin film by rotating it. However, the board 2 is not necessarily installed horizontally, and the board 2 is
If the photosensitive resin liquid 5 is as large as 00 x 300 m, a portion of the photosensitive resin liquid 5 injected from the beaker 4 leaks from the substrate 2 before it is spread and coated over the entire surface of the substrate 2. Therefore, the amount of photosensitive resin used is 100 to 200 cc.
There was a problem that there were more than necessary. In order to eliminate such wastage of photosensitive resin, there is a problem that not only the skill of the operator is required but also the working time becomes long.

The present invention has been made in view of these points, and provides a photosensitive resin coating method that can save the amount of photosensitive resin used, eliminates the need for operator skill, and shortens working time. This is what we provide.

[Means for Solving the Problems] The present invention provides a method of fixing a substrate of an object to be processed on a support, placing a frame having substantially the same contour shape as the substrate on the substrate, and A predetermined amount of any photosensitive resin liquid is injected onto the substrate surrounded by the body, the photosensitive resin liquid is spread over the substrate surface, the frame body is removed, and then the substrate is This is a photosensitive resin coating method characterized in that the photosensitive resin is spread and coated onto the substrate in the form of a thin film by rotating the substrate.

[Function] According to the photosensitive resin coating method of the present invention, a frame having substantially the same outline shape as the substrate is placed on the substrate, and a photosensitive resin liquid is applied onto the substrate surrounded by the frame. By injecting a predetermined amount and spreading it onto the substrate, the photosensitive resin liquid does not leak out of the substrate due to the frame, which reduces the amount of photosensitive resin used and improves the skill of the operator. It is not necessary and the working time can be shortened.

[Examples] Examples of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, first, a substrate 12 to be processed is placed on a support 11 having a cross-shaped support rod 10. As shown in FIG. Next, on the substrate 12, a film having approximately the same contour shape and made of, for example, stainless steel or acrylic resin and having a thickness of 1 to 2 In! R
The frame body 13 of is placed. Next, the positioning pin 14 on the support rod 10 is advanced to fix the positions of the substrate 12 and the frame 13 together.

Next, a predetermined photosensitive resin liquid 16 is injected from the beaker 15 onto the surface of the substrate 12 surrounded by the frame 13. When a predetermined amount of the photosensitive resin liquid 16 has been injected, the injection is stopped, and the heights of the four corners of the substrate 12 are changed to spread the photosensitive resin liquid 16 over the entire surface of the substrate 12. At this time, the frame body 13 functions like a dike to prevent the photosensitive resin liquid 16 from escaping to the outside of the substrate. Next, the frame 13 was removed, the substrate 12 was rotated together with the support 11, and the photosensitive resin liquid 1 was injected.
6 is diffused over the entire surface of the substrate 12. Thereafter, the fixation by the positioning pin 14 is released and the frame 13 is removed to obtain the substrate 12 on which the resin layer with a thickness of 0.5 to 10 μm is formed.

According to this photosensitive resin coating method, the substrate 1
A frame body 13 having approximately the same outline shape as 2 is fixed on a substrate, and a photosensitive resin liquid 16 is placed on the substrate 12 surrounded by the frame body 13.
Since the photosensitive resin liquid 16 is injected and diffused, it is possible to prevent the substrate 12 from leaking and to save the amount of the photosensitive resin liquid 16 used. Moreover, the operator does not need to be skilled and the working time can be shortened. Incidentally, since the peripheral portion of the substrate 12 directly under the frame 13 is an area that originally has poor coating characteristics and is cut off, there is no problem even if the frame 13 is placed thereon.

Further, the frame body 13 can be used each time by performing a set of coating operations several to several tens of times and cleaning it after each coating operation. Note that various materials can be used for the frame body 13, including metal and plastic.

[Effects of the Invention] As explained above, according to the photosensitive resin coating method according to the present invention, the amount of photosensitive resin used can be reduced, operator skill is not required, and working time can be shortened. It is something that can be done.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing the method of the present invention, and FIG. 2 is an explanatory diagram showing a conventional method of coating a photosensitive resin. 11... Support body, 12... Substrate, 13... Frame body,
14...Positioning bottle, 15...Beaker, 16.
...Photosensitive resin liquid.

Claims (1)

[Claims] After fixing the substrate of the object to be processed on the support, a frame having approximately the same outline shape as the substrate is placed on the substrate, and an arbitrary photosensitive resin is placed on the substrate surrounded by the frame. A predetermined amount of liquid is injected to spread the photosensitive resin liquid over the substrate surface, the frame is removed, and the substrate is then rotated to spread the photosensitive resin onto the substrate in the form of a thin film. A method for applying a photosensitive resin, which is characterized by applying the photosensitive resin in a diffused manner.