Organic Thin Film Ink Compositions and Methods
First Claim
1. An ink composition comprising:
- 75-95 wt. % of a polyethylene glycol dimethacrylate monomer, a polyethylene glycol diacrylate monomer, or a combination thereof, wherein the polyethylene glycol dimethacrylate monomer and the polyethylene glycol diacrylate monomer have number average molecular weights in the range from about 230 g/mole to about 430 g/mole;
4-10 wt. % of pentaerythritol tetraacrylate, pentaerythritol tetramethacrylate, or a combination thereof; and
1-15 wt. % of a spreading modifier having a viscosity in the range from about 14 to about 18 cps at 22°
C. and a surface tension in the range from about 35 to about 39 dynes/cm at 22°
C.
3 Assignments
0 Petitions
Accused Products
Abstract
The present teachings relate to various embodiments of an ink composition, which once printed and cured forms an organic thin film on a substrate such as, but not limited by, an OLED device substrate. Various embodiments of the ink can be printed using an industrial inkjet printing system that can be housed in a gas enclosure, which gas enclosure defines an interior that has a controlled environment maintained as an inert and substantially low-particle process environment. Patterned printing of an organic thin film on a substrate, for example, but not limited by, an OLED device substrate, in such a controlled environment can ensure a high-volume, high yield process for a variety of OLED devices.
-
Citations
20 Claims
-
1. An ink composition comprising:
-
75-95 wt. % of a polyethylene glycol dimethacrylate monomer, a polyethylene glycol diacrylate monomer, or a combination thereof, wherein the polyethylene glycol dimethacrylate monomer and the polyethylene glycol diacrylate monomer have number average molecular weights in the range from about 230 g/mole to about 430 g/mole; 4-10 wt. % of pentaerythritol tetraacrylate, pentaerythritol tetramethacrylate, or a combination thereof; and 1-15 wt. % of a spreading modifier having a viscosity in the range from about 14 to about 18 cps at 22°
C. and a surface tension in the range from about 35 to about 39 dynes/cm at 22°
C. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. A process of forming a polymeric thin film layer on a substrate, the method comprising:
-
providing an inert processing environment; providing an OLED device substrate having an inorganic thin film formed thereupon; providing an ink composition comprising; 75-95 wt. % of a polyethylene glycol dimethacrylate monomer, a polyethylene glycol diacrylate monomer, or a combination thereof, wherein the polyethylene glycol dimethacrylate monomer and the polyethylene glycol diacrylate monomer have number average molecular weights in the range from about 230 g/mole to about 430 g/mole; 4-10 wt. % of pentaerythritol tetraacrylate, pentaerythritol tetramethacrylate, or a combination thereof; 1-15 wt. % of a spreading modifier having a viscosity in the range from about 14 to about 18 cps at 22°
C. and a surface tension in the range from about 35 to about 39 dynes/cm at 22°
C.; and0.1-5 wt. % of a photoinitiator, printing a layer of the ink composition over a defined area of the substrate including the inorganic thin film, and curing the layer of printed ink, wherein an organic polymeric thin film is formed over the inorganic thin film. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
-
Specification