Liquid crystal cells – elements and systems – Particular structure – Particular illumination
Reexamination Certificate
2011-04-19
2011-04-19
Qi, Mike (Department: 2871)
Liquid crystal cells, elements and systems
Particular structure
Particular illumination
C349S062000, C349S066000
Reexamination Certificate
active
07929077
ABSTRACT:
A planar light source includes a backlight that emits light in a planar shape, a ray direction regulating element that regulates a direction of light made incident from the backlight and emits the light, whereby a directivity of the light is improved, and in which a transparent area for transmitting light and an absorption area for absorbing light are formed, and a transparent and scattering switching element that is switchable between a state in which light which is transmitted by the ray direction regulating element and made incident on the switching element is transmitted and a state in which the light is scattered. The transparent areas are formed in a shape of a matrix including a plurality of rows and a plurality of columns, the transparent and absorption areas are formed alternately, and the absorption area is formed so that the transparent areas are separated.
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Okumura Fujio
Sumiyoshi Ken
Suzuki Teruaki
Uehara Shin-ichi
McGinn IP Law Group PLLC
NEC Corporation
Qi Mike
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