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Method of making LC polymer film

Foreign code F110005543
File No. N072-04WO
Posted date Sep 7, 2011
Country United States of America
Application number 58520404
Gazette No. 20070160846
Gazette No. 7727686
Date of filing Aug 27, 2004
Gazette Date Jul 12, 2007
Gazette Date Jun 1, 2010
International application number JP2004012378
International publication number WO2005083147
Date of international filing Aug 27, 2004
Date of international publication Sep 9, 2005
Priority data
  • P2004-054035 (Feb 27, 2004) JP
  • 2004WO-JP12378 (Aug 27, 2004) WO
Title Method of making LC polymer film
Abstract (US7727686)
To provide a method of making a film of organic material excellent in moisture barrier property and/or oxygen barrier property and also to provide an electronic device excellent in long term stability, in which the film obtained by such film making method is utilized to form a protective film for protecting an electronic device, and particularly an organic electronic device, to avoid deterioration of the performance, which would otherwise be brought about by moisture and oxygen in the atmosphere.
The film is formed by depositing and solidifying, on a substrate, an evaporant formed by irradiating a liquid crystal polymer capable of exhibiting an optical anisotropy with pulsed laser.
Scope of claims [claim1]
1. A film making method comprising: forming a liquid crystal polymer evaporant by irradiating a thermotropic liquid crystal polymer capable of exhibiting optical anisotropy and having a melting point of 250 deg. C. to 350 deg. C. with a pulsed laser to evaporate the liquid crystal polymer, and
depositing and solidifying the evaporant on a surface to form a film of the thermotropic liquid crystal polymer on the surface.
[claim2]
2. A film formed by the method of claim 1.
[claim3]
3. A laminate comprising the film recited in claim 2 on a surface.
[claim4]
4. An electronic device comprising the film recited in claim 2 as a protective film.
[claim5]
5. The electronic device as claimed in claim 4, wherein the electronic device is an organic electroluminescent element.
[claim6]
6. The electronic device as claimed in claim 4, wherein the electronic device is an organic field-effect transistor element.
[claim7]
7. The method of claim 1, wherein said surface is a surface of an electronic device.
[claim8]
8. The method as claimed in claim 7, wherein the electronic device is an organic electroluminescent element.
[claim9]
9. The method as claimed in claim 7, wherein the electronic device is an organic field-effect transistor element.
[claim10]
10. The method of claim 1, wherein the thickness of the film of the thermotropic liquid crystal polymer on the surface is less than 1 mu m.
[claim11]
11. The method of claim 10, wherein the thickness of the film of the thermotropic liquid crystal polymer on the surface is not less than 30 nm.
[claim12]
12. The method of claim 1, wherein the thermotropic liquid crystal polymer irradiated with a pulsed laser is in the form of a film, and is irradiated at a wavelength of 200-1200 nm with a pulsed laser that generates energies within the range of 0.1 to 3.0 J/cm2.
[claim13]
13. The method of claim 11, wherein the thermotropic liquid crystal polymer irradiated with a pulsed laser is in the form of a film, and is irradiated at a wavelength of 200-1200 nm with a pulsed laser that generates energies within the range of 0.1 to 3.0 J/cm2.
  • Inventor, and Inventor/Applicant
  • KOINUMA HIDEOMI
  • ITAKA KENJI
  • ARAI KEIICHIROU
  • JAPAN SCIENCE AND TECHNOLOGY AGENCY
IPC(International Patent Classification)
Reference ( R and D project ) CREST Development of Advanced Nanostructured Materials for Energy Conversion and Storage AREA
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