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:
Dec. 15, 1998
Filed:
Oct. 14, 1997
Tetsuro Ochi, Kanagawa, JP;
Shizuo Nishihara, Kanagawa, JP;
Hiroaki Ichikawa, Kanagawa, JP;
Satofumi Koike, Kanagawa, JP;
Yasunori Sato, Kanagawa, JP;
Sony Corporation, , JP;
Abstract
To provide a liquid crystal display device and manufacturing method thereof for preventing a drop in the pixel slot opening and focus rates due to poor alignment precision of the drive substrate and microlens which face each other, and for improving the focus rate and production efficiency. A lens group comprised of a plurality of microlenses is integrated into the opposing substrate. A second alignment mark is formed at the desired position within the display area on the opposing substrate. This second alignment mark is formed along grooves between numerous protrusions having a semi-circular shaped cross section so the outer contours of the face form a cross shape of a specific width. These protrusions are made of the same material (for instance transparent plastic) and shape (semi-circular cross section) as those of the microlens at the display area, forming a lens shape. The second alignment mark is made together and simultaneously with the forming of the microlens in such a way that there is no deviation between the second alignment mark and the microlens opposite it.