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:
Nov. 23, 2004
Filed:
May. 29, 2002
Seung Ho Hong, Kyoungki-do, KR;
Seung Hee Lee, Kyoungki-do, KR;
Boe-Hydis Technology Co., Ltd., Kyoungki-do, KR;
Abstract
Liquid crystal display devices having stairs type driving signal capable of preventing over-twist and improving response time properties by applying data signal of stairs type pulse signal when a gate signal is applied to drive the TFT, including upper and lower substrates with an interposed liquid crystal layer driving electrodes to drive the liquid crystals; first and second alignment layers rubbed in a first direction and in a direction parallel with the first alignment layer, respectively; first polarizing plate arranged outside of the lower substrate, forming 45° angle with the first direction; and second polarizing plate outside of the upper substrate having a transmittance axis perpendicular to the first polarizing plate and forming 45° angle with the first direction. A gate signal is applied to drive a thin film transistor in each pixel, and data signals having two or more stairs type pulse signals are successively applied.