US 12,503,555 B2 · Solventless photocurable liquid composition, cured product thereof, optical filler containing same, and display device including layer comprising said cured product

Abstract

A photocurable liquid silicone composition, that has low viscosity that facilitates injection into a small gap, cures quickly by irradiating with a high energy beam such as ultraviolet light or the like, has a refractive index after curing that is high not only in a visible region but also in an infrared region, in which composition design is possible to provide an arbitrarily low dielectric constant, and is particularly useful as a material for a device using an infrared LED light source, is provided. The composition comprises: (A) one or more type of an organosilane or organopolysiloxane having on average one or more photoreactive functional groups and two or more monovalent functional groups selected from aromatic groups with 6 to 12 carbon atoms and aralkyl groups with 7 to 12 carbon atoms in a molecule and having 1 to 5 silicon atoms, and optionally further comprising (C) a curing catalyst.

Claims20

Dependent claims

A solvent-free photocurable liquid composition, comprising:

(A) one or more type of an organosilane or organopolysiloxane having on average one or more epoxy group-containing photoreactive functional groups and two or more monovalent functional groups selected from aromatic groups with 6 to 12 carbon atoms and aralkyl groups with 7 to 12 carbon atoms in a molecule and having 1 to 5 silicon atoms;
(C1) a photocationic polymerization initiator;
(D) a silicon-free photocurable compound expressed by the formula:
RX-R where RX represents a photoreactive functional group, and R represents a monovalent functional group selected from unsubstituted or fluorine-substituted monovalent alkyl groups, alkenyl groups with 2 to 6 carbon atoms, aromatic groups with 6 to 12 carbon atoms, aralkyl groups with 7 to 12 carbon atoms, hydroxyl groups, and alkoxy groups;
and
(E) a photosensitizer;
wherein the viscosity of the entire liquid composition, measured at 25°° C. using an E-type viscometer, is 500 mPa·s or less;
and
wherein an organic solvent is not included in the composition.

6 more elements

Dependencies are inferred from the claim text.

Solventless photocurable liquid composition, cured product thereof, optical filler containing same, and display device including layer comprising said cured product

Life of this patent

Solventless photocurable liquid composition, cured product thereof, optical filler containing same, and display device including layer comprising said cured product

Life of this patent

Abstract

Claims20