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, 2000
Filed:
May. 24, 1999
NEC Corporation, Tokyo, JP;
Abstract
An active matrix-type liquid crystal display device driven by a transverse electric field is provided which is capable of providing a superior image quality without showing after images or uneven images by maintaining the potential of the black matrix at an optimum value, while maintaining the black matrix in a floating state; the active matrix-type liquid crystal display device being constructed by a pair of transparent insulating substrates, and on the TFT substrate, a plurality of scanning lines and a plurality of signal lines, thin film transistors formed near the crossover points of the scanning and signal lines, pixel electrodes connected to the TFTs, and counter electrodes formed facing to the pixel electrodes are formed with a transverse electric field being generated by applying a voltage between the pixel electrodes and the counter electrodes, and a slit with a predetermined size being formed in the black matrix formed on the other CF substrate.