Multilayer films for package applications and method for making same
A multilayer film formed by a solution process. The multilayer film includes a plurality of basic film structures positioned in contiguous overlying relationship to form a common multilayer film. Each of the plurality of basic film structures includes one of: a first two-layer structure with a first layer including either a polymer material or an organic material and a second layer including a functionalized inorganic material; a second two-layer structure with a first layer including either a polymer material or an organic material and a second layer including either a polymer binder and/or an organic binder; and a three layer structure with a first layer including either a polymer material or an organic material, a second layer including a functionalized inorganic material, and a third layer including one of a polymer binder and/or an organic binder.
1. A method of forming a multilayer film for packaging applications by a solution process comprising the steps of:
positioning a plurality of basic film structures in contiguous overlying relationship to form a multilayer film, each basic film structure of the plurality of basic film structures including one of a first two-layer structure with a first layer including a polymer/organic material and a second layer including a functionalized inorganic material, a second two-layer structure with a first layer including a polymer/organic material and a second layer including a polymer/organic binder, and a three layer structure with a first layer including a polymer/organic material, a second layer including a functionalized inorganic material, and a third layer including a polymer/organic binder; and
the positioning, in conjunction with each layer of each of the plurality of basic film structures, including forming the materials of each layer into a solution;
printing the solution to form each layer; and
drying and annealing/curing the printed solution of each layer.
2. A method as claimed in claim 1 wherein the step of printing the solution includes one of spin-coating, dip-coating, bar-coating, slot-coating, fluid coating, spray coating, imprinting, gravour coating, and combinations thereof.
3. A method as claimed in claim 1 wherein the step of annealing/curing the printed solution includes heating to a temperature in a range of approximately 100° C. to approximately 300° C.
4. A method of forming a multilayer film for packaging applications by a solution process comprising the steps of:
positioning a device to be packaged on a supporting substrate;
forming a multilayer film by a solution process so as to surround the device and at least a portion of the substrate, the step of forming including positioning a plurality of basic film structures in contiguous overlying relationship to form a multilayer film, each basic film structure of the plurality of basic film structures including one of a first two-layer structure with a first layer including a polymer/organic material and a second layer including a functionalized inorganic material, a second two-layer structure with a first layer including a polymer/organic material and a second layer including a polymer/organic binder, and a three layer structure with a first layer including a polymer/organic material, a second layer including a functionalized inorganic material, and a third layer including a polymer/organic binder;
the step of forming a multilayer film, in conjunction with each layer of each of the plurality of basic film structures, including forming the materials of each layer into a solution;
coating/printing the solution to form each layer; and
drying and annealing/curing the printed solution of each layer at a temperature lower than a melting temperature of the supporting substrate.
5. A method as claimed in claim 4 wherein the device includes one of an electric/electronic device, an opto-electric device, a battery, an electrochemical device, a biosensor, and a chemsensor.
6. A method as claimed in claim 4 wherein the step of printing the solution includes one of spin-coating, dip-coating, bar-coating, slot-coating, fluid coating, spray coating, imprinting, gravour coating, and combinations thereof.
7. A method as claimed in claim 4 wherein the step of annealing/curing the printed solution includes heating to a temperature in a range of approximately 100° C. to approximately 300° C.