Illumination – Illuminated scale or dial – Internal light source
Reexamination Certificate
2007-06-26
2007-06-26
Quach-Lee, Y. My (Department: 2885)
Illumination
Illuminated scale or dial
Internal light source
C362S216000, C362S225000
Reexamination Certificate
active
11085310
ABSTRACT:
The present invention mainly relates to a liquid crystal display device which comprises a casing and a backlight module; wherein the casing comprises a frame and an opening formed at a central region of the casing, the opening defining an active area; the backlight module used in providing light source via the active area comprises at least one lamp distributed equally in regions defined by the frame and the active area. The at least one lamp comprising an even luminance portion and a dense luminance portion, wherein the even luminance portion is located in the region defined by the active area while the dense luminance portion is located in the region defined by the frame. Because the dense luminance portion is located outside the active area in the invention, the luminance uniformity in the active area is raised without complex treatments thereby.
REFERENCES:
patent: 2728845 (1955-12-01), Potter
patent: 4842378 (1989-06-01), Flasck et al.
patent: 7063439 (2006-06-01), Peng et al.
patent: 7086753 (2006-08-01), Lin et al.
patent: 07-272507 (1995-10-01), None
patent: 09-320320 (1997-12-01), None
Chi Mei Optoelectronics Corp.
Quach-Lee Y. My
Senniger Powers
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