Liquid crystal cells – elements and systems – Particular structure – Particular illumination
Reexamination Certificate
2011-08-02
2011-08-02
Connelly Cushwa, Michelle R (Department: 2874)
Liquid crystal cells, elements and systems
Particular structure
Particular illumination
C349S058000
Reexamination Certificate
active
07990491
ABSTRACT:
A liquid crystal display device has a thin structure with a backlight device appropriate for illuminating a liquid crystal panel where there is no area in band form where the brightness is inconsistent. The size of the diffusion plate that forms the optical sheet of the backlight device is made smaller than the opening for illumination in the diffusion region, and the diffusion plate is not provided in the vicinity of the end portions of the opening for illumination in the configuration. In this configuration, the reflection properties are different in the vicinity of the end portions and as the center portion of the opening for illumination, and the brightness increases in the vicinity of the end portions of the backlight device, so that an area in band form where the brightness is inconsistent can be prevented from being created in the end portions of the display device.
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Hiyama Ikuo
Kajita Daisuke
Konno Akitoyo
Sekiguchi Yoshifumi
Tsumura Makoto
Antonelli, Terry Stout & Kraus, LLP.
Connelly Cushwa Michelle R
Hitachi Displays Ltd.
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