Ink composition for screen printing and pattern forming method
A technology of screen printing and composition, which is applied in the field of ink composition for screen printing, and can solve the problems such as reduced coatability and residue of ink composition, and achieve the effect of reducing the amount of liquid medicine
Active Publication Date: 2019-05-31
TOKYO OHKA KOGYO CO LTD
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Problems solved by technology
In addition, in the case of forming the coating film by the screen printing method, first, a screen (printing plate) such as a mesh-shaped wire, synthetic resin, or stainless steel is pasted on the frame, and the ink combination is applied on the screen. thing, use a squeegee (squeegee) to squeeze the coated ink composition onto the substrate, thereby printing the ink composition onto the substrate to form a coating film of the ink composition, if using a suitable If the material of the conventional photolithography method is printed on the substrate by the screen printing method, the following problems will occur: the bubbles generated when the ink composition passes through the screen remain in the coating film, or the ink composition and the substrate repel each other. and reduce the coatability of the ink composition
Method used
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[0069] Hereinafter, examples of the present invention will be described, but these examples are merely illustrations for properly explaining the present invention and do not limit the present invention at all.
[0070] The substrate resin component (A) and the photoactive compound (B) of the type and content shown in Table 1 were dissolved in the solvent (C) to prepare the ink combinations for screen printing of Examples 1-8 and Comparative Examples 1-14 things. The content of each component is a ratio (% by mass) to the total mass of the screen printing ink composition.
[0071] 【Table 1】
[0072]
[0073] The phenolic resin (A1) is a compound (a1-1) having a structure represented by the following formula (1) and having a Mw of 5200 and a compound having a structure represented by the following formula (1) and having a Mw of 7000 in equal amounts (a1-2) made of resin. In addition, in the phenol resin (A1), m:p=36:64 in the following formula (1).
[0074]
[0075] In...
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Abstract
The invention provides ink composition used for silk screen printing, which is suitable for forming the pattern coating on the substrate by using the silk screen printing. The composition provided by the invention comprises a solution (C) containing a base material resin composition (A), a photoactive composition (B), and an organic solvent having a boiling point more than 200DEG C. The surface tension of the ink composition is more than 34.0Mn / m and lower than 39.0mN / m.
Description
technical field [0001] The present invention relates to a screen printing ink composition for forming a resist pattern used when etching a substrate including a solar cell substrate, and a pattern forming method using the composition. Background technique [0002] As a method for forming a resist pattern used when partially etching a substrate including a solar cell substrate, it is not the screen printing method of forming a film simultaneously with pattern formation, but attempts are being made to form a resist pattern on a substrate. A uniform film was formed on the surface and patterned by photolithography (Patent Document 1). [0003] Compositions for spin coating are mainly known as materials currently used for patterning by photolithography (see Patent Documents 1 and 2). In addition, in Patent Document 1, film formation using a bar coater is also performed. Thereby, a uniform film can be formed, and a fine pattern can be formed with higher precision than the screen...
Claims
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IPC IPC(8): G03F7/004G03F7/00
Inventor 富田浩明吉井靖博
Owner TOKYO OHKA KOGYO CO LTD