Method for manufacturing liquid crystal polymer film
AssigneeAzotek Co., Ltd.
InventorHung-Jung Lee
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Abstract
A method for manufacturing a liquid crystal polymer film includes the following operations. Liquid crystal oligomers are received, in which the liquid crystal oligomers have a melting point of Tm1 and has an average degree of polymerization of 10 to 100. A first heating process is performed to melt the liquid crystal oligomers, in which the first heating process has a first heating temperature higher than the Tm1. An extrusion process is performed to make the liquid crystal oligomers into a first film. A second heating process with a second heating temperature is performed to heat the first film, in which the liquid crystal oligomers in the first film are polymerized to form a second film including liquid crystal polymers.
Claims20
A method for manufacturing a liquid crystal polymer film, comprising:
- receiving liquid crystal oligomers, wherein the liquid crystal oligomers have a first melting point of Tm1 and have an average degree of polymerization of 10 to 100;
- performing a first heating process to melt the liquid crystal oligomers, wherein the first heating process has a first heating temperature higher than Tm1;
- performing an extrusion process to make the liquid crystal oligomers into a first film;
- performing a second heating process with a second heating temperature to heat the first film, wherein the liquid crystal oligomers in the first film are polymerized to form a second film including liquid crystal polymers with a second melting point of Tm2 and a glass transition temperature of Tg;
- and
- performing a third heating process to adjust a coefficient of thermal expansion of the second film to 17 ppm/° C. to 20 ppm/° C., wherein the third heating process has a third heating temperature of Tg to Tm2.
Dependencies are inferred from the claim text.