Liquid crystal cells – elements and systems – Particular structure – Particular illumination
Reexamination Certificate
2011-08-30
2011-08-30
Robinson, Mark A (Department: 2883)
Liquid crystal cells, elements and systems
Particular structure
Particular illumination
C349S058000, C362S609000
Reexamination Certificate
active
08009246
ABSTRACT:
A direct type backlight unit used in a liquid crystal display device is provided which can suppress lowering of luminance at an electrode portion of a linear light source. A reflecting plate is formed on a side wall of a box-shaped reflector close to an end of a linear light source. The reflector reflects light beams from the linear light source to be guided toward a liquid crystal panel. The reflecting plate on the side wall has at least two inclined surfaces. The inclined surfaces may have a stepped shape or a convex ridge shape. According to this arrangement, it is possible to reduce or eliminate decrease of the luminance level at ends of an effective display area of a liquid crystal panel.
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Murata Seiji
Nagayoshi Mayumi
Ouchi Satoshi
Tsuru Yasutaka
Antonelli, Terry Stout & Kraus, LLP.
Hitachi , Ltd.
Kim Dennis Y
Robinson Mark A
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