Backlight for a double-sided liquid crystal display unit
AssigneeNEC LCD Technologies, Ltd.
InventorNoriaki Ato
Life of this patent
Estimating the term…
Abstract
A backlight unit for use in an LCD unit includes an optical guide plate, a tubular lamp extending along the lateral side of the optical guide plate, a reflection member including a reflector encircling the tubular lamp at three sides thereof and a reflection sheet disposed at the rear side of the optical guide plate, a chassis receiving therein the optical guide plate and the reflection member, and a lamp holder disposed at the corner portion of the chassis. The reflector has an extension at the corner portion, the extension being sandwiched between the chassis and the reflector to restrict the lateral movement of the reflector, whereby a defect of the front edge of the reflector appearing in the display area can be prevented.
Claims11
A backlight unit comprising:
- an optical guide plate having a front irradiation surface;
- a tubular lamp extending along a lateral side of said optical guide plate;
- a reflection member including a reflector for encircling said tubular lamp except for said lateral side of said optical guide plate and a reflection sheet disposed at a rear side of said optical guide plate;
- a chassis for receiving therein said reflection member and said optical guide plate for support of said reflection member and said optical guide plate in unison;
- and
- a lamp holder for supporting said tubular lamp at a corner portion of said chassis, wherein:
- said reflector has a first portion sandwiched between said chassis and said lamp holder, said first portion restricting a lateral movement of at least a front edge of said reflector with respect to said chassis.
A backlight unit comprising:
- an optical guide plate having a front irradiation surface;
- a tubular lamp extending along a lateral side of said optical guide plate;
- a reflection member including a reflector for encircling said tubular lamp except for said lateral side of said optical guide plate and a reflection sheet disposed at a rear side of said optical guide plate;
- a chassis for receiving therein said reflection member and said optical guide plate for support of said reflection member and said optical guide plate in unison;
- and
- a lamp holder for supporting said tubular lamp at a corner portion of said chassis, wherein:
- said reflector has an engagement at a front side thereof, said engagement engaging with said chassis to restrict a lateral movement of at least a front edge of said reflector with respect to said chassis.
Dependencies are inferred from the claim text.