Title:
SEALING AGENT FOR LIQUID CRYSTAL DROPPING METHODS, LIQUID CRYSTAL DISPLAY PANEL USING SAME, AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2020/235357
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a sealing agent for liquid crystal dropping methods, which is not likely to dissolve into liquid crystals during the production of a liquid crystal display panel, and which exhibits high adhesion to a substrate of the liquid crystal display panel after curing. A sealing agent for liquid crystal dropping methods according to the present invention, which solves the above-described problem, contains (A) an epoxy resin, (B) a curable resin that contains at least one (meth)acryloyl group in each molecule, (C) a photopolymerization initiator, and (D) a thermal curing agent. The epoxy resin (A) has an epoxy equivalent weight of 350 or more; a cured product of the epoxy resin (A) has a glass transition temperature of 100°C or less; in the ultraviolet-visible absorption spectrum as determined by dissolving only the photopolymerization initiator (C) in tetrahydrofuran, the wavelength at which the absorbance is 0.1 or more when affirmed from the long wavelength side is 400 nm or more; and the content of the epoxy resin (A) is 5% by mass or more but less than 20% by mass.
Inventors:
MIZOBE YUJI
Application Number:
PCT/JP2020/018662
Publication Date:
November 26, 2020
Filing Date:
May 08, 2020
Export Citation:
Assignee:
MITSUI CHEMICALS INC (JP)
International Classes:
G02F1/1339; C08F2/44; C08G59/17; C08G59/68; C09K3/10
Foreign References:
| JP2017223828A | 2017-12-21 | |||
| JP2017219565A | 2017-12-14 | |||
| JP2017110120A | 2017-06-22 |
Attorney, Agent or Firm:
WASHIDA & ASSOCIATES (JP)
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