Liquid crystal cells – elements and systems – Particular structure – Having significant detail of cell structure only
Reexamination Certificate
2006-11-29
2009-02-10
Connelly-Cushwa, Michelle R. (Department: 2874)
Liquid crystal cells, elements and systems
Particular structure
Having significant detail of cell structure only
C349S096000
Reexamination Certificate
active
07489377
ABSTRACT:
It is an object of the present invention to provide a liquid crystal display device with a back-side prism type backlight in order to prevent a stain in an image displayed and attain high brightness.A liquid crystal display device comprises: a first substrate; a second substrate arranged on the viewer side compared with the first substrate; a liquid crystal held between the first substrate and the second substrate; a light guide plate arranged on the back surface of the first substrate; a polarization plate arranged between the first substrate and the light guide plate; a prism sheet arranged between the light guide plate and the polarization plate and having prisms provided on the light guide plate side; a diffusion layer arranged between the prism sheet and the polarization plate; and a light control sheet arranged between the diffusion layer and the polarization plate. The light control sheet rotates the polarization of the light emitted from the diffusion layer.
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patent: 6433846 (2002-08-01), Omar et al.
patent: 2001/0003472 (2001-06-01), Hiraishi
patent: 2003/0156233 (2003-08-01), Ohsumi
patent: 2001-166116 (2001-06-01), None
patent: 2001-166302 (2001-06-01), None
patent: 2002-231027 (2002-08-01), None
Antonelli, Terry Stout & Kraus, LLP.
Chu Chris
Connelly-Cushwa Michelle R.
Hitachi Displays Ltd.
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