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. 07, 2006
Filed:
Apr. 08, 1999
Kazumasa Ohsumi, Saitama, JP;
Kazumasa Ohsumi, Saitama, JP;
Enplas Corporation, Kawaguchi, JP;
Abstract
LCD panelis mounted on surface light source deviceoutputting an oblique preferential emission under emission promotion by scattering pattern formed on emission faceC. Back faceB provides a light control face correcting directivity toward a frontal direction in a plane parallel to incidence end faceA. Directivity is further corrected toward a frontal direction in a plane perpendicular to faceA by a prism sheetwhich is coupled with panelto provide a composite optical element unified with a polarization film. Output light from liquid crystalimpinges onto a polarization film. Light component corresponding to a transmission polarization plane of polarization filmis outputted out of the device after being transmitting film. Prism sheetmay be coupled with another member like polarization separating sheet member. Prism projection rows avoid from being damaged or deformed.