Patent application number | Description | Published |
20110222285 | LIGHT EMITTING DEVICE HAVING A PLURALITY OF LIGHT EMITTING CELLS - The present invention relates to a light emitting device including at least three pairs of half-wave light emitting units, each pair including a terminal of a first half-wave light emitting unit connected to a terminal of a second half-wave light emitting unit, the terminals having the same polarity, a polarity of the connected terminals of one half-wave light emitting unit pair being opposite to the polarity of the connected terminals of an adjacent half-wave light emitting unit. The light emitting device also includes at least two full-wave light emitting units each connected to adjacent pairs of half-wave light emitting units. The half-wave light emitting units and the full-wave light emitting units each have at least one light emitting cell, the half-wave light emitting units each have a first terminal and a second terminal, the full-wave light emitting units each have a third terminal having the same polarity as the first terminal and a fourth terminal having the same polarity as the second terminal, and the third terminal of each full-wave light emitting unit being connected to the second terminal of adjacent half-wave light emitting units and the fourth terminal of each half-wave light emitting unit being connected to the first terminal of adjacent half-wave light emitting units. | 09-15-2011 |
20140209940 | LIGHT EMITTING DEVICE HAVING A PLURALITY OF LIGHT EMITTING CELLS - Exemplary embodiments of the present invention relate to a light-emitting device including a single substrate, at least two light-emitting units disposed on the single substrate, each of the at least two light-emitting units including a first conductivity-type semiconductor layer, a second conductivity-type semiconductor layer, and an active layer disposed between the first conductivity-type semiconductor layer and the second conductivity-type semiconductor layer, a first electrode connected to the first conductivity-type semiconductor layer, and a second electrode connected to the second conductivity-type semiconductor layer, wherein two light-emitting units of the at least two light-emitting units share the first conductivity-type semiconductor layer. | 07-31-2014 |
20140362071 | BACKLIGHT DRIVING APPARATUS - A backlight driving apparatus that drives a backlight unit having a plurality of LEDs is provided, which includes a rectifying unit rectifying an AC voltage and generating a driving voltage for the plurality of LEDs, a plurality of connection changing units changing connection relations between the plurality of LEDs depending on a level of the driving voltage, and a light output compensation unit generating a compensation voltage using the driving voltage and selectively supplying the compensation voltage to the plurality of LEDs. | 12-11-2014 |
20150034979 | LIGHT EMITTING DIODE ASSEMBLY - Disclosed is a light emitting diode assembly. The light emitting diode assembly comprised: a red light emitting diode chip; a short-wavelength light emitting diode chip emitting a light having a wavelength relatively shorter than that of a light emitted from the red light emitting diode chip; a first heat-dispersion member for dispersing most of the heat generated in the short wavelength light emitting diode chip; and a second heat-dispersion member for dispersing most of the heat generated in the red light emitting diode chip. Further, the second heat-dispersion member has heat dispersion performance relatively superior to that of the first heat dispersion member. Thus, spectrum movement in the red light emitted from the red light emitting diode chip may be prevented so as to prevent a color-coordinate transformation during the operation time of same. | 02-05-2015 |
20150036329 | LIGHT EMITTING MODULE HAVING WAFER WITH INTEGRATED POWER SUPPLY DEVICE - A light emitting module is disclosed. The light emitting module comprises a wafer having first and second surfaces; a light emitting diode chip disposed on the first surface of the wafer; a power supply device for supplying power to the light emitting diode chip; and a photoelectric conversion device for converting sunlight into electricity and providing it to the power supply device, wherein the power supply device is disposed on the second surface of the wafer. | 02-05-2015 |
20150036353 | LIGHT EMITTING MODULE HAVING LENS - A light emitting module having a lens is disclosed. The light emitting module includes: a substrate having recesses; light emitting elements mounted within the recesses of the substrate; and a lens which is coupled with the substrate and diffuses the light emitted from the light emitting elements. The light emitting module can have a slim structure by mounting the light emitting elements within the recesses formed in the substrate. | 02-05-2015 |
20150117016 | LIGHT EMITTING MODULE AND LENS - A lens including an upper surface having a curved portion having a changing curvature in a direction extending away from a central axis of the lens, and a lower surface having a concave portion disposed on the central axis of the lens. The concave portion of the lower surface includes an entrance disposed on a lower region of the concave portion and configured to receive light emitted from a light-emitting diode chip, and an upper end surface disposed on an upper region of the concave portion. The concave portion includes a width that narrows in a direction extending away from the entrance. The upper end surface is nonplanar. | 04-30-2015 |
20150154917 | BACKLIGHT MODULE, METHOD FOR DRIVING SAME AND DISPLAY DEVICE USING SAME - A display device includes a power rectifying unit for rectifying alternating power, a power factor correction unit correcting the power factor of the alternating power and outputting a power factor corrected voltage containing a direct current voltage component having at least a predetermined size, a display module driven by the power factor corrected voltage, a backlight unit, and a driving unit supplying the main driving voltage to a backlight unit, receiving the power factor corrected voltage when the size of the rectified voltage is smaller than a preset threshold value to generate a supplementary driving voltage. | 06-04-2015 |