Patent ID: 7510747

Claim:
A light emitting diode (LED) device for an LCD comprising: lead frames composed of a cathode and an anode, respectively; a chip positioned on the cathode lead frame; a metal wire connecting the chip and the anode lead frame; and a lens comprising a lens composition comprising a copolymer represented by the formula 1 and having a weight average molecular weight of about 5,000 to about 500,000: wherein R 1 and R 2 independently represent a hydrogen atom, a linear, branched or cyclic alkyl group having 1 to 10 carbon atoms or â€”COOR 3 group in which R 3 represents a linear, branched or cyclic alkyl group having 1 to 10 carbon atoms, R 4 and R 5 independently represent a hydrogen atom or an alkyl group having 1 to 10 carbon atoms, the ratio n/n+m ranges from about 0.3 to about 0.995, and the ratio m/n+m ranges from about 0.005 to about 0.7, wherein the lens surrounds the chip, having one end of either lead frame exposed outside, and the lens contacts the chip.