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:
Oct. 16, 2001
Filed:
Aug. 09, 1999
Katsutoshi Saito, Mobara, JP;
Syoichi Hirota, Hitachi, JP;
Iwao Takemoto, Mobara, JP;
Toshio Miyazawa, Chiba, JP;
Katsumi Matsumoto, Mobara, JP;
Other;
Abstract
Eliminating differences in cell gap of a liquid crystal panel is effected to prevent display irregularities while avoiding contamination of the liquid crystal material due to unwanted contact of a seal material with the liquid crystal material. To this end, the liquid crystal panel includes a first substrate DSUB having multiple pixel electrodes AL-P in the form of a matrix, a second substrate USUB opposing the first substrate with a specified gap therebetween and having one or more transparent electrodes ITO-C, a liquid crystal layer LC made of a liquid crystal material sealed in the gap between the opposing substrates, and an alignment film on at least one of inner surfaces of the first and second substrates in contact with the liquid crystal layer for controlling alignment of the liquid crystal material. A plurality of pole-like spacers SPC-P are provided in a display area of the first substrate DSUB for retaining the gap between the first and second substrates DSUB, USUB at a predefined value while providing a band or strip-like spacer SPC-S that is made of the same material as that of the pole-like spacers and is formed to surround the display area and also has a width greater than the diameter of the pole spacers along with a sealing material SL filled along the outer edges of the strip spacer SPC-S for allowing the first substrate DSUB and the second substrate USUB to be tightly bonded together.