Backlighting lightpipes for display applications

Details Backlighting lightpipes for display applications Backlighting lightpipes for display applications

1997-03-11

1999-03-09

Ullah, Akm E.

Optical waveguides

Noncyclindrical or nonplanar shaped waveguide

G02B 610

Patent

active

058812016

ABSTRACT:
This invention discloses improved lightpipes for backlighting applications in liquid crystal display devices. The lightpipes comprise transparent polymers with scattering centers. A preferred composition for such lightpipes comprises a cycloolefin polymer containing scattering centers from suitable elastomers and inorganic fillers. The inventive lightpipes offer superior scattering efficiency as well as spatial uniformity of scattering and uniformity of scattering across a wide wavelength range.

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