Illumination – Light source and modifier – Including reflector
Patent
1991-04-24
1993-03-23
Lazarus, Ira S.
Illumination
Light source and modifier
Including reflector
362307, 362311, 362341, 359 48, 359 50, F21V 722
Patent
active
051958228
ABSTRACT:
In a plain light source device used for backlighting a light transmission type liquid crystal display, a reflector for reflecting the light from the light source toward the liquid crystal panel is provided which is formed from a conductive resin (plastic) consisting of a resinous (plastic) material with a metal fiber mixed therein. The thus formed reflector is an insulator at its surfaces and a conductor inside. A board on which the light source is supported is electrically and mechanically connected to the reflector for grounding. The reflector thereby serves as a shield against the noise generated by the light source. Further, a transparent conductive sheet is disposed on the front side (on the display panel side) of the light source. The conductive sheet is electrically connected to the board for grounding. As a result, the light source is surrounded by the reflector and the tranparent conductive sheet, both grounded, thus providing further reliable shielding.
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patent: 4616295 (1986-10-01), Jewell et al.
patent: 4659183 (1987-04-01), Suzawa
patent: 4826294 (1989-05-01), Imoto
patent: 4922392 (1990-05-01), Egami et al.
patent: 4933823 (1990-06-01), Taylor
patent: 4958911 (1990-09-01), Beiswenger et al.
Oyama Hisashi
Takahashi Nobuyuki
Lazarus Ira S.
Quach Y.
Sharp Kabushiki Kaisha
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