Liquid crystal cells – elements and systems – Particular structure – Particular illumination
Reexamination Certificate
2005-03-08
2005-03-08
Plynn, Nathan J. (Department: 2826)
Liquid crystal cells, elements and systems
Particular structure
Particular illumination
C349S061000, C349S062000, C349S064000, C349S070000, C349S110000
Reexamination Certificate
active
06864930
ABSTRACT:
An LCD provided with an edge light type back light unit which is arranged in a manner that the light emitted from a CCT in the form of a linear light source is condensed at the end portion of a light conduction plate, then the light reflected by a reflecting sheet and then ejected from the light conduction plate transmits through a light diffusion plate thereby to indirectly irradiate on a liquid crystal panel from the rear direction thereof in the form of planar light with uniform luminance. A light reflecting plate having a curved surface is disposed in the vicinity of the CCT. A light shielding plate is disposed in a manner that a part of the light emitted from the CCT and reflected by the light reflecting plate is condensed at the end portion of the light conduction plate. Another part of the light emitted from the CCT and reflected by the light reflecting plate is directed upward and directly irradiates a part of the display area of the liquid crystal panel thereby to form a high luminance irradiation portion. Accordingly, thus configured LCD is improved in its visibility and so can be formed as a vehicle-mounted alarm display device for displaying various alarms.
REFERENCES:
patent: 5619351 (1997-04-01), Funamoto et al.
patent: 5673128 (1997-09-01), Ohta et al.
patent: 5796450 (1998-08-01), Kanda et al.
patent: 5808708 (1998-09-01), Oyama et al.
patent: 5877829 (1999-03-01), Okamoto et al.
patent: 5914760 (1999-06-01), Dakiu
patent: 6074070 (2000-06-01), Sasako
patent: 6084714 (2000-07-01), Ushiyama et al.
patent: 6091547 (2000-07-01), Gardiner et al.
patent: 6504589 (2003-01-01), Kashima et al.
patent: 20010038425 (2001-11-01), Lee
patent: 20020057562 (2002-05-01), Sasako et al.
patent: 20020172039 (2002-11-01), Inditsky
patent: 631170 (1994-06-01), None
patent: 64-61730 (1989-03-01), None
patent: 6-75217 (1994-03-01), None
patent: 9-147615 (1997-06-01), None
patent: 9-281492 (1997-10-01), None
patent: 10-104623 (1998-04-01), None
Aoki Kunimitsu
Matsushita Junichi
Morgan & Lewis & Bockius, LLP
Plynn Nathan J.
Sefer Ahmed N.
Yazaki -Corporation
LandOfFree
Liquid crystal display device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Liquid crystal display device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Liquid crystal display device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3415974