The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 12, 2007
Filed:
Feb. 09, 2001
Tomohiro Akada, Shiga, JP;
Masaya Takizawa, Shiga, JP;
Tomohiro Akada, Shiga, JP;
Masaya Takizawa, Shiga, JP;
Otsuka Electronics Co., Ltd., Osaka, JP;
Abstract
The polarization angle θof a polarizer () is set, and the reflection intensity Sin a cross Nicol state and the reference reflection intensity Refof a liquid crystal cell () are measured. A different polarization angle θis then set, and the reflection intensity Sin a cross Nicol state and the reference reflection intensity Refof the liquid crystal cell are measured. The rations S/RefS/Refof measured intensities and the ratio S·Ref/S·Refis determined in order to cancel the background components of the reference reflection intensities RefRefthus determining the value of cell gap accurately.