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, 1993
Filed:
Nov. 20, 1990
Hiroshi Fukutani, Nara, JP;
Kunihiko Ito, Yamatokooriyama, JP;
Kazuhiko Akimoto, Nara, JP;
Mitsuaki Shioji, Nara, JP;
Hiroshi Takanashi, Souraku, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
In a color liquid crystal display device, the shape of a color filter cannot be seen and coloring of areas other than a display area due to leaking light is prevented. By making a first and second segment electrodes in a two layer construction, it becomes possible to display two different display image planes in different colors with only the single layer type color liquid crystal display device. Further, sufficient contrast can be obtained by using a liquid crystal element for compensation. It is also possible to display two kinds of display image planes, namely a color display image plane and a black and white display image plane. Two kinds of color display image planes can be displayed because the color liquid crystal display device is made in a two layered construction. A so-called normally black display and normally white display can be switched. Further, when the display state is switched between normally black display and normally white display, the background color changes and it is possible to maintain the same display color. Further display colors can be doubled as compared to the example of the prior art.