Thermal layer, backlight unit and display device including the same
First Claim
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1. A backlight unit, comprising:
- a light source for emitting a light;
a light source reflector surrounding the light source;
a light guide plate for guiding the light emitted from the light source, the light source being located at least one lateral side of the light guide plate;
a reflector disposed under the light guide plate for reflecting the light toward the light guide plate; and
a thermal layer disposed on and in direct contact with one surface of the reflector for absorbing heat transmitted from the light guide plate,wherein the thermal layer comprises;
a thermally conductive material;
about 10 to 40 parts by weight of a binder based on 100 parts by weight of the thermally conductive material;
about 5 to 30 parts by weight of a filler based on 100 parts by weight of the thermally conductive material; and
about 5 to 40 parts by weight of a curing agent based on 100 parts by weight of the binder, andwherein the reflector and the thermal layer have a length larger than a length of the light guide plate and are disposed directly below the light source reflector.
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Abstract
Disclosed is a thermal layer, as well as a backlight unit and a display device including the same. A composition for the thermal layer comprises a thermally conductive material, about 10 to 40 parts by weight of a binder based on 100 parts by weight of the thermally conductive material, about 5 to 30 parts by weight of a filler based on 100 parts by weight of the thermally conductive material, and about 5 to 40 parts by weight of a curing agent based on 100 parts by weight of the binder. A backlight unit according to the present invention comprises a light source, a reflector reflecting a light emitted from the light source and the present thermal layer disposed on one surface of the reflector. The thermal layer is formed by applying a mixture of the thermally conductive material, the binder, the filler and the curing agent.
23 Citations
8 Claims
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1. A backlight unit, comprising:
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a light source for emitting a light; a light source reflector surrounding the light source; a light guide plate for guiding the light emitted from the light source, the light source being located at least one lateral side of the light guide plate; a reflector disposed under the light guide plate for reflecting the light toward the light guide plate; and a thermal layer disposed on and in direct contact with one surface of the reflector for absorbing heat transmitted from the light guide plate, wherein the thermal layer comprises; a thermally conductive material; about 10 to 40 parts by weight of a binder based on 100 parts by weight of the thermally conductive material; about 5 to 30 parts by weight of a filler based on 100 parts by weight of the thermally conductive material; and about 5 to 40 parts by weight of a curing agent based on 100 parts by weight of the binder, and wherein the reflector and the thermal layer have a length larger than a length of the light guide plate and are disposed directly below the light source reflector. - View Dependent Claims (2, 3)
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4. A display device, comprising:
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a liquid crystal panel displaying an image by using light; and a backlight unit providing light to the backside of the liquid crystal display panel, the backlight unit comprising; a light source for emitting a light; a light source reflector surrounding the light source; a light guide plate for guiding the light emitted from the light source, the light source being located at least one lateral side of the light guide plate; a reflector disposed under the light guide plate for reflecting the light toward the light guide plate; and a thermal layer disposed on and in direct contact with one surface of the reflector for absorbing heat transmitted from the light guide plate, wherein the thermal layer comprises; a thermally conductive material; about 10 to 40 parts by weight of a binder based on 100 parts by weight of the thermally conductive material; about 5 to 30 parts by weight of a filler based on 100 parts by weight of the thermally conductive material; and about 5 to 40 parts by weight of a curing agent based on 100 parts by weight of the binder, wherein the reflector and the thermal layer have a length larger than a length of the light guide plate and are disposed directly below the light source reflector. - View Dependent Claims (5, 6, 7, 8)
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Specification
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Current AssigneeLG Electronics, Inc. (LG Corporation)
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Original AssigneeLG Electronics, Inc. (LG Corporation)
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InventorsHwang, Kab Jin
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Primary Examiner(s)Payne; Sharon E
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Application NumberUS11/507,531Publication NumberTime in Patent Office1,491 DaysField of Search362/623, 362/624, 362/627, 362/629, 362/561, 362/580, 362/560, 362/373, 524/437, 524/441, 524/413, 524/403, 349/161, 349/67US Class Current362/560CPC Class CodesC08K 3/04 CarbonG02B 6/0055 Reflecting element, sheet o...G02B 6/0085 Means for removing heat cre...G02F 1/133615 Edge-illuminating devices, ...G02F 1/133628 with cooling means
