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:
Jul. 12, 2005
Filed:
May. 30, 2002
Masanori Hiraishi, Osaka, JP;
Masanari Ohnishi, Himeji, JP;
Tomohiro Sasagawa, Tokyo, JP;
Naoko Iwasaki, Tokyo, JP;
Akimasa Yuuki, Tokyo, JP;
Osamu Murakami, Tokyo, JP;
Masanori Hiraishi, Osaka, JP;
Masanari Ohnishi, Himeji, JP;
Tomohiro Sasagawa, Tokyo, JP;
Naoko Iwasaki, Tokyo, JP;
Akimasa Yuuki, Tokyo, JP;
Osamu Murakami, Tokyo, JP;
Daicel Chemical Industries, Ltd., Osaka, JP;
Abstract
A transmissive display apparatus comprises a liquid crystal display unit; and a plane light source unit that comprises a tubular light source, a light guide, and a light-diffusing film having anisotropy that provides a consistent luminance in a display surface, and/or ultraviolet (UV) absorbability that absorbs the UV from the light source and prevents deterioration of a prism sheet in the display unit and liquid display cell. In the film, a light-scattering characteristic F(θ) represents a relationship between the light-scattering angle θ and a scattered light intensity F fulfills Fy(θ)/Fx(θ)≧1.01 over a range of θ=4 to 30°, wherein Fx(θ) and Fy(θ) represent the light-scattering characteristics in an X-axial direction and Y-axial direction of the film, respectively. The film comprises a light-diffusing layer composed of a plurality of resins which are different from each other in refractive index, and a transparent layer laminated on at least one side thereof.