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US 7,924,359 B2Granted
Backlight unit and liquid crystal display device using the same
AssigneeLG Display Co., Ltd.
InventorDong Jae You
Life of this patent
Estimating the term…
Abstract
A liquid crystal display device includes a liquid crystal display panel, a backlight unit having a fluorescent lamp, a reflection sheet reflecting light emitted from the fluorescent lamp, and a bottom cover supporting the reflection sheet, and a metal chassis supporting and affixing the liquid crystal display panel and the backlight unit.
Claims10
A liquid crystal display device, comprising:
- a liquid crystal display panel;
- a light guide plate having a projection plane in parallel with a rear plane and a light incident plane;
- a reflection plate along the rear plane of the light guide plate;
- a fluorescent lamp along the light incident plane of the light guide plate;
- a reflection sheet having opposed first and second end portions and substantially enclosing an outer side of fluorescent lamp except for a light exit portion,
- wherein the reflection sheet is formed of a synthetic resin, and
- wherein the second end portion of the reflection sheet overlaps the reflection plate and the rear plane of the light guide plate;
- optical sheets over the projection plane of the light guide plate and overlapping the first end portion of the reflection sheet by an overlap amount (B);
- a bottom cover extending from a rear side of the reflection plate to an outer side of the reflection sheet such that an end portion of the bottom cover extends to the outer side of the reflection sheet substantially following a contour of the reflection sheet to substantially surround and contact all the outer side of the reflection sheet except for a predetermined interval (A) from the light guide plate and the overlap amount (B),
- wherein the end portion of the bottom cover is positioned to leave the same predetermined interval (A) from the optical sheets, and the first end portion of the reflection sheet overlaps the light guide plate by the same overlap amount (B);
- and
- a chassis supporting and affixing the liquid crystal display panel and the bottom cover.
9 more elements
A backlight unit, comprising:
- a light guide plate having a projection plane in parallel with a rear plane and a light incident plane;
- a reflection plate along the rear plane of the light guide plate;
- a fluorescent lamp along the light incident plane of the light guide plate;
- a reflection sheet having opposed first and second end portions and substantially enclosing an outer side of fluorescent lamp except for a light exit portion,
- wherein the reflection sheet is formed of a synthetic resin, and
- wherein the second end portion of the reflection sheet overlaps the reflection plate and the rear plane of the light guide plate;
- optical sheets over the light projection plane of the light guide plate and overlapping the first end portion of the reflection sheet by an overlap amount (B);
- and
- a bottom cover extending from a rear side of the reflection plate to an outer side of the reflection sheet such that an end portion of the bottom cover extends to the outer side of the reflection sheet substantially following a contour of the reflection sheet to substantially surround and contact all the outer side of the reflection sheet except for a predetermined interval (A) from the light guide plate and the overlap amount (B),
- wherein the end portion of the bottom cover is positioned to leave the same predetermined interval (A) from the optical sheets, and the first end portion of the reflection sheet overlaps the light guide plate by the same overlap amount (B).
7 more elements
Dependencies are inferred from the claim text.