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:
Jun. 03, 2008
Filed:
Apr. 21, 2004
Takashi Ishizumi, Nara, JP;
Motohiro Yamahara, Nara, JP;
Takashi Ishizumi, Nara, JP;
Motohiro Yamahara, Nara, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A liquid crystal display unit is characterized by comprising a liquid crystal display panel, a back-light instrument for outputting light to the liquid crystal display panel, and a scattering-anisotropic optical instrument disposed on that side of the liquid crystal display panel which is opposite to the back-light instrument. The scattering-anisotropic optical instrument is so formed that the scattering intensity of light vertically entering the display screen of the liquid crystal panel is maximized. Therefore, the scattering-anisotropic optical instrument can scatter light vertically entering the display screen of the liquid crystal panel to allow a viewer to view a display screen from a wide range of viewing angles. In addition, because the unit does not scatter light entering obliquely, rather than vertically, a display screen but lets the light pass as it is, whitish appearance as is seen in an oblique-direction observation can be prevented. Therefore, whitish appearance can be prevented even if the back-light instrument does not output perfectly parallel light.