| Patent application number | Description | Published |
|---|
| 20080203895 | ELECTRO-LUMINESCENT DEVICE WITH IMPROVED EFFICIENCY - An electro-luminescent device has an array of light-emitting elements, including a near white light-emitting element. The near white light-emitting element includes an inorganic light-emitting layer of quantum dots, spaced between a pair of electrodes. The light-emitting layer produces a spectrum of light having at least a bimodal distribution of wavelengths. | 08-28-2008 |
| 20080203899 | ELECTRO-LUMINESCENT DISPLAY WITH IMPROVED EFFICIENCY - A full-color, light-emitting display device has improved efficiency with a large color gamut. The full-color, light-emitting display device has a plurality of pixels, each pixel having four or more colors of light-emitting elements. Three of the colors of light-emitting elements emits red, green, and blue light, and at least one of the colors of light-emitting elements emitting light is perceived to be within the gamut defined by the chromaticity coordinates of the red, green, and blue colored light-emitting elements. The light-emitting elements for emitting red, green, and blue colors of light each comprise a different species of inorganic light-emitting particles for emitting a different color of light. Each of the red, green, and blue species produces light having an emission spectrum with a full-width, half-maximum of less than or equal to 70 nm. | 08-28-2008 |
| 20080204366 | BROAD COLOR GAMUT DISPLAY - A method of making a color electroluminescent display device that includes determining a number of light emitting elements per pixel; and providing a substantially continually variable wavelength set of inorganic light-emitters having a spectral width. The same number of different inorganic light emitters is selected to emit light at the same determined number of different wavelengths and that provide the maximum color gamut area within a perceptually uniform two-dimensional color space. The color electroluminescent display device is formed having the same determined number of light emitting elements per pixel, wherein the light emitting elements in each pixel employ the same determined number of different inorganic light emitters. | 08-28-2008 |
| 20080238829 | COLOR ELECTRO-LUMINESCENT DISPLAY WITH IMPROVED EFFICIENCY - A full-color electroluminescent display with improved efficiency and increased color gamut that includes substantially complementary yellow and blue light-emitting elements, the chromaticity coordinates of which define the endpoints of a line that intersects a Planckian locus within the interval 0.175<=u′<=0.225 within the Commission Internationale de l'Eclairage (CIE) 1976 u′v′ chromaticity space. Also included in the display is a green light-emitting element of spectrum having a dominant wavelength between 500 nm and 540 nm and a full width, half maximum spectral bandwidth of 50 nm or less; and a red light-emitting element. | 10-02-2008 |
| 20080296555 | LAMP WITH CONTROLLABLE SPECTRUM - An area illumination inorganic electro-luminescent device including a substrate; and an array of one or more commonly addressed, light-emitting elements. Each commonly-addressed, light-emitting element includes a first electrode layer formed over the substrate, one or more light-emitting layers formed over the first electrode layer and a second electrode layer formed over the light-emitting layer. The light-emitting layers include multiple core/shell quantum dot emitters formed in a common polycrystalline semiconductor matrix, and a number of different core/shell quantum dot emitters emit light with a spectral power distribution having a peak and a FWHM bandwidth, such that the peak wavelengths differ by an amount less than or equal to the average FWHM bandwidth of the different core/shell quantum dot emitters within the range of 460 to 670 nm. | 12-04-2008 |
| 20080297027 | LAMP WITH ADJUSTABLE COLOR - A white-light electro-luminescent lamp having an adjustable spectral power distribution, including a first light-emitting element which emits light within each of three wavelength bands, 1) between 440 and 520 nm, 2) between 520 and 600 nm, and 3) between 600 and 680 nm. A second light-emitting element emits light within each of three wavelength bands, 1) between 440 and 520 nm, 2) between 520 and 600 nm, and 3) between 600 and 680 nm. A controller modulates the integrated spectral power of the light produced by the first and the second light-emitting elements such that the spectral power distribution of the light formed by combining the light produced by the modulated first and second light-emitting elements is substantially equal to a CIE standard daylight spectral power distribution for correlated color temperatures between 4000K-9500K. | 12-04-2008 |
| 20080297028 | WHITE-LIGHT ELECTRO-LUMINESCENT DEVICE WITH IMPROVED EFFICIENCY - A white-light electroluminescent device having an adjustable color temperature substantially on a predetermined range of a Planckian locus within the 1976 Commission Internationale de l'Eclairage (CIE) uniform chromaticity scale diagram. According to one embodiment, a first light-emitting element having a fixed ratio of at least two different species of emitters combined to produce a set of chromaticity coordinates at a predetermined white point substantially on the Planckian locus. A second light-emitting element having at least a single species of emitters produces a set of chromaticity coordinates. The set of chromaticity coordinates are positioned along a projected line extending from the Planckian locus and through the chromaticity coordinates of the first light-emitting layer. A controller adjusts the voltage or current associated with the first and second light-emitting elements to provide white light with a predetermined range of chromaticity coordinates substantially on the Planckian locus. | 12-04-2008 |
| 20090002349 | ELECTROLUMINESCENT WHITE LIGHT EMITTING DEVICE - A white-light-emitting electroluminescent device includes light-emitting elements for emitting different colors of light, wherein one of the light-emitting elements has a luminous efficacy greater than the luminous efficacy of at least one of the other light-emitting elements. The different colors of light combine to form white light. Also included is a driver for receiving a color signal representing a relative luminance and color produced by the electroluminescent device. The driver is responsive to a converted control signal when controlling the color accuracy of the light produced by the light-emitting elements to ultimately reduce the power consumption of the white light-emitting electroluminescent device. | 01-01-2009 |
| 20090039360 | SOLID-STATE AREA ILLUMINATION SYSTEM - A solid-state area illumination system includes multiple LED devices, each LED device is formed on a separate substrate and each LED device emits differently colored light at different angles relative to the substrate. The peak frequencies of each color of light differ by at least the smallest of the full width half maximums of the frequency distributions of emitted light. Also included is a support for positioning each of the LED devices at multiple orientations relative to an area of illumination upon a surface, so that any point within the area of illumination will receive multiple colors of light from more than one of the LED devices at different angles. Each LED device includes one or more light-emitting elements, each light-emitting element having multiple sizes of core/shell quantum-dot emitters formed in a common polycrystalline semiconductor matrix. | 02-12-2009 |
| 20090072693 | LED DEVICE HAVING IMPROVED LIGHT OUTPUT - A white light-emitting microcavity light-emitting diode device, comprising:
| 03-19-2009 |
| 20090190095 | 2D/3D SWITCHABLE COLOR DISPLAY APPARATUS - A 2D/3D switchable display system having a selector for selecting a two-dimensional (2D) or a three-dimensional (3D) image processing path; a first processor for processing image data through the two-dimensional image processing path; a second processor, independent of the first processor, for processing image data through the three dimensional image processing path; a first set of at least three emitters having corresponding first wavelengths; a second set of at least three emitters having corresponding second wavelengths; and a controller that during a 2D operation activates both first and second sets of emitters to present a single image, while during a 3D operation activates the first set of emitters to present a first image having one half of stereo image information and activates the second set of emitters to present a second image having a second half of stereo image information. | 07-30-2009 |
| 20100066816 | STEREOSCOPIC DISPLAY SYSTEM WITH FLEXIBLE RENDERING FOR MULTIPLE SIMULTANEOUS OBSERVERS - A method for display of stereoscopic images defines at least first and second unequal subsets of viewers and provides at least the first subset of viewers with a first decoding device for viewing displayed stereoscopic images. From a single display apparatus, separate images are displayed for each eye of at least the first and second subsets of viewers in a repeated sequence of displaying the image for the first eye of all viewers during a first time interval; displaying the image for the second eye of the first subset of viewers during a second time interval; and displaying the image for the second eye of the second subset of viewers during a third time interval. The first, second, and third time intervals are non-overlapping. | 03-18-2010 |
| 20100085424 | SWITCHABLE 2-D/3-D DISPLAY SYSTEM | 04-08-2010 |
| 20100231485 | LED DEVICE HAVING IMPROVED LIGHT OUTPUT - A white light-emitting microcavity light-emitting diode device, comprising:
| 09-16-2010 |
