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:
Sep. 26, 2006
Filed:
Apr. 22, 2002
Dae-ho Choo, Suwon, KR;
Min-young Won, Kunpo, KR;
Hyoo-hak Nam, Suwon, KR;
Beak-keun Jeon, Yongin, KR;
Dae-Ho Choo, Suwon, KR;
Min-Young Won, Kunpo, KR;
Hyoo-Hak Nam, Suwon, KR;
Beak-Keun Jeon, Yongin, KR;
Samsung Electronics Co., Ltd., Suwon-Si, KR;
Abstract
The glass substrate test apparatus of the liquid crystal cell process comprises a laser unit for generating a laser beam, a beam shaper and beam collimator for shaping the laser beam emitted from the laser unit so as to have an elongated cross section and parallelizing the shaped laser beam, a photo detector for detecting an intensity of double refraction of the shaped laser beam transmitted over the whole glass substrate, a phase defector for measuring the laser double refraction detected by the photo detector and comparing the measured double refraction with a standard laser double refraction, and a polarizer arranged between the laser unit and the beam shaper or between the beam shaper and the beam collimator for polarizing the laser beam to a parallel ray.