| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a light emitting diode to generate white light with a desired color temperature. <P>SOLUTION: In the light emitting diode and a method of producing white light from the light emitting diode with an active region producing an emission falling in a primary wavelength range, a first part of the active region is covered with a first conversion element for converting the emission falling in the primary wavelength range to an emission falling in a second wavelength range. A remaining second part of the active region is covered with a second conversion element for converting the emission falling in the primary wavelength rage to an emission falling in a third wavelength range. The light emitting diode is configured to control the intensity of the emission falling in the primary wavelength range to control the color point of the white light generated by mixing the emissions falling in the second wavelength range and the third wavelength range. The LED 100 can be used in a backlight unit, such as liquid crystal display device, and can provide an adjustable color temperature and high contrast to improve readability and visibility on the display depending on the application in use. <P>COPYRIGHT: (C)2009,JPO&INPIT |
