JPH033415Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field]

The present invention relates to a thin film printing device,
More specifically, the present invention relates to a thin film printing apparatus for easily and continuously printing a polymer thin film used in electronic components into a desired pattern shape with a uniform and accurate film thickness.

[Conventional technology]

In recent years, polymer thin films have been required and used for various electronic components such as insulating coatings for semiconductor devices and alignment films for liquid crystal display devices. Generally, these thin films have
It is used by forming a film with a thickness of 100 to 3000 Å using a very low viscosity polymer solution of 2000 cp to 10 cp, but the uniformity of the film thickness and the accuracy of the pattern shape and size are strictly required. . Therefore, when trying to print a polymer thin film using existing printing equipment, the uniformity and stability of the film thickness are still insufficient. In addition, as a method for forming a polymer thin film, there is a so-called spinner method in which a polymer solution is applied while rotating a substrate on which a printing object is fixed.

[Problem that the idea aims to solve]

However, this method has the problem that the film thickness differs between the center and periphery of the substrate, and when attempting to form a thin film into a pattern, complex processing steps such as masking and etching are required.
It was time-consuming and expensive. The purpose of the present invention is to solve the above-mentioned problems and provide a thin film printing device that can easily and continuously print a thin polymer film in a desired pattern shape with a uniform and accurate film thickness. be.

[Means to solve the problem]

In order to achieve the above object, the present invention provides a thin film printing device that supports a flat plate-shaped intaglio plate having a uniform cell group and a flat plate-shaped printing medium, and a groove is provided between the two. A surface plate into which an intaglio plate is inserted with one side bent, an ink supply device and a doctor blade that fill the intaglio plate with ink, and a plate cylinder provided with a letterpress plate having the same pattern as the pattern of the thin film to be formed. The printing cylinder and the intaglio are pressed together to transfer the ink to the surface of the letterpress,
Thereafter, the plate cylinder and the surface of the printing material are pressed against each other to form a thin film on the surface of the printing material.

【Example】

Embodiments of the present invention will be described in more detail with reference to the drawings. 1 and 2 are a plan view and a side view showing an embodiment of the thin film printing apparatus of this invention. FIG. 3 is a partial perspective view showing the groove. 1 is an intaglio plate, 2 is a surface plate,
3 is an ink supply section, 4 is a doctor blade, 5 is a relief plate, 6 is a plate cylinder, 7 is a printing medium, and 8 is a groove. A flat intaglio plate 1 and a flat printing medium 7 are supported on a surface plate 2. The surface plate 2 has a horizontal surface, and the intaglio plate 1 and the printing material 7 are fixed by vacuum suction or the like. The central part of the surface plate 2, that is, the intaglio 1 and the printing material 7
A groove 8 is provided in the middle. This groove 8 is for storing excess ink scraped off by the doctor blade 4. doctor blade 4
The intaglio 1 moves while stress is applied to its cutting edge, so if the surface of the intaglio 1 is discontinuous when it reaches the groove 8, it will repel the ink, so one side of the intaglio 1 will be bent and the intaglio 1 will be bent inside the groove 8. (3rd
(see figure). Furthermore, since excess ink is collected in the grooves 8, it is possible to prevent the surface of the relief plate 5 from becoming dirty. The intaglio plate 1 has a larger area than the thin film pattern to be formed, and has a large number of small holes called cells in the printing industry on its surface. An ink supply section 3 is provided above the intaglio plate 1 to supply ink for forming a thin film. Further, a doctor blade 4 is provided which moves over the surface of the intaglio plate 1, fills ink into the cells of the intaglio plate 1, and scrapes off excess ink. The ink used is of low viscosity, with a viscosity of 2000 cp to 10 cp, and is made of a mixture of a resin or a resin precursor and a solvent. A plate cylinder 6 is provided so as to move above the intaglio plate 1 and the printing medium 7. After the intaglio plate 1 is filled with ink, the plate cylinder 6 is positioned above the surface plate 2 that supports the intaglio plate 1, and the letterpress plate 5 provided on its surface rotates while being in pressure contact with the surface of the intaglio plate 1, and the ink is transferred to the letterpress plate 5. metastasizes to the surface. The relief plate 5 is made of rubber such as butyl rubber or resin such as nylon resin.
Alternatively, it may be made of photosensitive rubber or photosensitive resin. The surface roughness is preferably about 50 μm according to JIS standard Rz. The relief plate 5 is configured to exhibit the pattern of the thin film to be formed. In addition, Toppan 5
The thickness of is preferably 0.2 to 0.3 mm. After the ink is transferred to the surface of the relief plate 5, the plate cylinder 6 is moved to the upper part of the printing material 7, and the relief plate 5 and the surface of the printing material 7 are pressed together to transfer the ink to the surface of the printing material 7 and form a thin film. . The printing medium 7 is made of a material with a smooth surface, such as a glass plate. When one process is completed as described above, the plate cylinder 6 and doctor blade 4 return to their initial positions and begin the next process. At this time, excess ink on the surface of the intaglio plate 1 is collected in the grooves 8, so that the next printing process can be immediately carried out without staining the surface of the letterpress plate 5.

[Effect of the idea]

The thin film printing device of the present invention supports a flat intaglio plate having a uniform group of cells and a flat printing medium, and a groove is provided between the two, and one side of the intaglio plate is bent and inserted into the groove. It consists of a surface plate, an ink supply device and a doctor blade that fill the intaglio with ink, and a plate cylinder equipped with a letterpress having the same pattern as the pattern of the thin film to be formed, and the plate cylinder and the intaglio are pressed together. The ink is transferred to the surface of the letterpress plate, and then the plate cylinder and the surface of the printing medium are brought into pressure contact to form a thin film on the surface of the printing medium. Therefore, the thin film printing apparatus of the present invention can easily form a thin film with an accurate, stable and uniform thickness even with low viscosity ink. Further, the dimensional accuracy of the desired pattern shape can also be accurately obtained. Furthermore, since surplus ink can be reused, the amount of ink used can be reduced, and printing can be performed efficiently. Therefore, it is expected that it will be widely used to form various thin films including polymer thin films for various electronic components.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing an embodiment of the thin film printing apparatus of the present invention, and FIG. 2 is a side view thereof. FIG. 3 is a partial perspective view showing the groove. 1... Intaglio, 2... Surface plate, 3... Ink supply section, 4... Doctor blade, 5... Letterpress, 6...
...Plate cylinder, 7...Printing material, 8...Groove.

Claims (1)

[Scope of utility model registration request] A plate-shaped intaglio plate having a uniform cell group and a surface plate that supports a flat plate-shaped printing medium and has a groove between them, into which one side of the intaglio plate is bent and inserted, and an ink plate is placed on the intaglio plate. It consists of an ink supply device and a doctor blade, which are filled with ink, and a plate cylinder equipped with a relief plate having the same pattern as the thin film pattern to be formed.The plate cylinder and the intaglio plate are brought into pressure contact and the ink is transferred to the letterpress surface . A thin film printing apparatus characterized in that the plate cylinder and the surface of the printing medium are then brought into pressure contact to form a thin film on the surface of the printing medium.