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:
Aug. 04, 2009
Filed:
May. 18, 2007
Fumihiko Matsuno, Kanagawa, JP;
Fumihiko Matsuno, Kanagawa, JP;
NEC LCD Technologies, Ltd., Kawasaki, Kanagawa, JP;
Abstract
A semi-transmissive type liquid-crystal display device makes it possible to easily optimize both the reflection characteristic (reflection mode) and the transmission characteristic (transmission mode) while keeping a high aperture ratio, thereby improving the display quality. A liquid crystal layer is disposed between first and second substrates. Switching elements are formed on the first substrate for respective pixel regions. Each of the pixel regions is divided into a transmission region and a reflection region. An interlayer insulating film is formed to cover the switching elements on the first substrate. In the transmission region, a transmission electrode is formed on the interlayer insulating film. In the reflection region, a reflection electrode is formed on the interlayer insulating film. The surface of the interlayer insulating film is partially removed, thereby forming a level difference between the transmission and reflection regions.