LED lamp unit
First Claim
Patent Images
1. An LED lamp unit for a liquid crystal display device comprising:
- an optical lens having a central recess part and an edge, wherein the central recess part is hollowed inwardly, and the edge is formed in shape of a flat surface or a convex lens;
at least one or more LED chips arranged at fixed intervals in a lower portion of the optical lens; and
a lower reflecting sheet positioned on a bottom surface of the LED chip.
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Abstract
A light emitting diode (LED) lamp unit is disclosed for obtain a thin profile display device, to improve uniformity of light, and to simplify a power connection line for operation, which includes an optical lens having a central recess part and an edge, wherein the central recess part is hollowed out inwardly, and the edge is formed in shape of a flat surface or in shape of a convex lens; at least one or more LED chips arranged at fixed intervals in a lower portion of the optical lens; and a lower reflecting sheet positioned on a bottom surface of the LED chip.
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Citations
24 Claims
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1. An LED lamp unit for a liquid crystal display device comprising:
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an optical lens having a central recess part and an edge, wherein the central recess part is hollowed inwardly, and the edge is formed in shape of a flat surface or a convex lens;
at least one or more LED chips arranged at fixed intervals in a lower portion of the optical lens; and
a lower reflecting sheet positioned on a bottom surface of the LED chip. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An LED lamp unit comprising:
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an optical lens having an edge in shape of a flat surface or in shape of a convex lens;
a plurality of LED chips arranged at fixed intervals in a lower portion of the optical lens;
a lower reflecting sheet positioned on a bottom surface of the optical lens and the LED chips; and
an upper reflecting sheet positioned on an upper surface of the optical lens. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21)
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22. An LED lamp unit comprising:
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an optical lens having an edge in shape of a flat surface or in shape of a convex lens;
a plurality of LED chips arranged at fixed intervals in a lower portion of the optical lens;
a lower reflecting sheet positioned on a bottom surface of the optical lens and the LED chips; and
a light-absorbing film or a light-scattering film positioned on an upper surface of the optical lens. - View Dependent Claims (23, 24)
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Specification