WARM WHITE LIGHT LED CHIP WITH HIGH BRIGHTNESS AND HIGH COLOR RENDERING
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United States of America Patent
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Issued Date -
Jul 4, 2013
app pub date -
Sep 7, 2010
filing date -
Sep 7, 2010
priority date (Note) -
Abandoned
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Abstract
A warm white light LED chip with high brightness and high color rendering includes a white light part emitting a white light, a colored light part emitting a colored light with a wavelength of 580 nm-660 nm, an N electrode (8, 294, 394, 494) and a P electrode (7). Connected electrically with the N electrode (8, 294, 394, 494) and the P electrode (7) respectively, the warm white light LED chip directly emits warm white light with a color temperature of 2400K to 3500K and a color rendering index larger than 85. When the chip is lighted, the white light part emits the white light directly, or a blue light part stimulates fluorescent powder to form the white light, and the colored light part emits the colored light with the wavelength of 580 nm-660 nm to compensate the white light, thereby forming a low color temperature light source with high brightness and high color rendering.
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