Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Surface light source element and liquid crystal display device, sign device and traffic control sign device using same










Image Number 4 for United States Patent #6099135.

A surface light source device, comprising a light source (2); a light conductor (1) which has a light incident face (11) on at least one side end surface thereof which confronts the light source (2), and a light emitting face (12) on one surface thereof which is substantially perpendicular to the light incident face (11); and a light angle varying sheet (3) which is disposed at a side of the light emitting face (12) of the light conductor (1), wherein at least one of the light emitting face (12) and a back surface (13) of the light conductor (1) comprises a minute structure having an average slant angle of 0.5 to 7.5 degrees. The light angle varying sheet (3) may comprise a prism sheet having a plurality of prisms (31) which are formed parallel to one another on at least one surface thereof. The minute structure may comprise a roughened surface which includes a plurality of fine convex members each having a substantially spherical surface or a plurality of prism arrays having slant surfaces which extend parallel to said light incident face (11) and which have an average slant angle of 0.5 to 7.5 degrees.








 
 
  Recently Added Patents
Device and method incorporating an improved text input mechanism
Power conversion device for electric vehicle
Method and apparatus for power management control of an embedded memory having sleep and shutdown features
Multi-touch recognition resistive touch screen for recognizing multi-touch coordinates through capacitor charging time
Method of driving stereoscopic display apparatus and stereoscopic display apparatus
Packaging article
Process for producing polyphenylene ether composition
  Randomly Featured Patents
Chromatography method
Polymer and method for permeability profile control under severe reservoir conditions
Method and apparatus for exercising external memory with a memory built-in self-test
Enhanced adhesion for LIGA microfabrication by using a buffer layer
Coupling part, photosensitive drum, process cartridge and electrophotographic image forming apparatus
Automatic load-dependent brake control device having wide range of pressure adjustment
Gun with pivoting barrel and lever for retaining barrel in position or permitting barrel to pviot
Transcription factor stress-related proteins and methods of use in plants
Image compresssion systems with optimized data access
Method of preparing sulfur-modified polychloroprene