Reverse printing ink composition, printing method using the same, method of manufacturing display unit using the same
View Patent ↗A reverse printing ink composition capable of realizing printing with a uniform film thickness and high-definition patterning, a printing method using the same, and a method of manufacturing a display unit using the same are provided. The reverse printing ink composition includes a solvent containing an aromatic carbon hydride and a straight-chain carbon hydride and a low-molecular material.
1. A reverse printing ink composition comprising:
a solvent containing an aromatic carbon hydride and a straight-chain carbon hydride and
a low-molecular weight material having a weight-average molecular weight of less than or equal to 50000, wherein the aromatic carbon hydride is xylene and cyclohexylbenzene.
2. The reverse printing ink composition according to claim 1 , wherein the weight-average molecular weight of the low-molecular weight material is equal to or less than 15000.
3. The reverse printing ink composition according to claim 1 , wherein the low-molecular weight material is a compound expressed by Formula 1,
where A1 to A3 each are an aromatic carbon hydride group, a heterocyclic group, or a derivative thereof.
4. The reverse printing ink composition according to claim 1 , wherein the low-molecular weight material is a compound expressed by Formula 2, where the compound of Formula 1 is excluded,
where A1 to A3 each are an aromatic carbon hydride group, a heterocyclic group, or a derivative thereof, and
where Z1 is a nitrogen-containing carbon hydride group or a derivative thereof,
L1 is a group obtained by binding 1 to 4 bivalent aromatic ring groups to each other, and a bivalent group obtained by linking 2 to 4 aromatic rings to each other or a derivative thereof,
A4 and A5 are an aromatic carbon hydride group or a derivative thereof, and
A4 and A5 are allowed to form a ring structure by being bound to each other.
5. The reverse printing ink composition according to claim 1 , wherein the low-molecular material is a compound expressed by Formula 3, where the compounds of Formula 1 and Formula 2 are excluded,
where A1 to A3 each are an aromatic carbon hydride group, a heterocyclic group, or a derivative thereof,
where Z1 is a nitrogen-containing carbon hydride group or a derivative thereof,
L1 is a group obtained by binding 1 to 4 bivalent aromatic ring groups to each other, and a bivalent group obtained by linking 2 to 4 aromatic rings to each other or a derivative thereof,
A4 and A5 are an aromatic carbon hydride group or a derivative thereof, and
A4 and A5 are allowed to form a ring structure by being bound to each other, and
where Z2 is a nitrogen-containing carbon hydride group or a derivative thereof,
L2 is a group obtained by binding 2 to 6 bivalent aromatic ring groups to each other, and a bivalent group obtained by linking 2 to 6 aromatic rings to each other or a derivative thereof and
A6 to A9 each are obtained by linking 1 to 10 aromatic carbon hydride groups, heterocyclic groups, and derivatives thereof.
6. The reverse printing ink composition according to claim 1 , wherein a boiling point of the aromatic carbon hydride is greater than or equal to 138 deg C.
7. The reverse printing ink composition according to claim 1 , wherein a wettability of the straight-chain carbon hydride is greater than a wettability of the aromatic carbon hydride.
8. The reverse printing ink composition according to claim 1 , wherein the straight-chain carbon hydride is octane.