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Multipurpose lighting device with electronic glow stick

A multipurpose lighting device comprises a module including a first light source for a flashlight function and a second light source for a lantern or omnidirectional glow stick function. A button on the module is operative to selectively alternating between the first and second light sources. An elongate housing is coupled to the second light source...

Published: 10/2/2019 | Inventor(s): Dennis Bertken, Steven Beer

Keywords(s): LCD, Solar Cells, Solar Energy

Category(s): Energy, LCD

Negative birefringent rigid rod polymer films

A negative birefringent film, useful in liquid crystal displays, and a method for controlling the negative birefringence of a polyimide film is disclosed which allows the matching of an application to a targeted amount of birefringence by controlling the degree of in-plane orientation of the polyimide by the selection of functional groups within both...

Published: 10/2/2019 | Inventor(s): Frank Harris, Stephen Cheng, Justin Adair

Keywords(s): LCD

Category(s): LCD