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. 13, 2005
Filed:
Jun. 20, 2002
Miho IL, Kakogawa, JP;
Miho Il, Kakogawa, JP;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
An object of the invention is to provide a color filter and a liquid crystal display device using it, which can acquire uniform color purity within a pixel. A color filter for coloring the first light ray Lhaving a unidirectional optical path and the second light ray Lhaving a bidirectional optical path for each pixel. This filter comprises: a step-forming layer of optically transmissive material, which can be supported by a base layer, and which is patterned for a pixel to form at least one recess-shaped portion having a bottom faceof a predetermined shape corresponding to an area wherein the first light ray Lis caused to be transmitted and a wall faceof a predetermined height; and a coloring layerC deposited on the step-forming layerand the recess-shaped portion for coloring the first and second light rays.