Multicolor LED Control Systems

Colorful COB LED light source with wider color range compared to using just two chipsets with different colors. It uses two sets of LED chipsets on a substrate, a fluorescent layer, and a light guide layer. The LED chipsets provide primary colors. The fluorescent layer converts light from one chipset to a different color. The light guide mixes the converted light from the fluorescent layer with the unconverted light from the other chipset to create a range of colors based on the primary colors.

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A high-density, small-volume patch-type 2121 three-color LED light source for applications like stage lighting that provides compact, high-power, and uniform mixed color output in a 21 x 21mm package size. The light source has three individually mounted LED chips arranged symmetrically on a ceramic substrate with pads for connection. A lens covers the chips and substrate. The chips have different sizes, with the center of the larger chip aligned with the x-axis and the smaller chips symmetrically positioned on either side. The smaller chips have side lengths of 20-28 mil and the larger chip is 30-45 mil. This arrangement allows high-density packing of the chips in the small form factor.

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RGB adjustable COB (chip-on-board) light source with improved color and efficiency. The COB has red, green, and blue LED strings using blue chips covered by fluorescent glues. The red string has red phosphor glue, green uses green phosphor glue, and the blue string uses uncovered blue chips. This allows consistent materials and characteristics for all colors. The COB has a surrounding dam ring and a cover over the LEDs. The separate color conversion glues enable adjusting RGB balance and intensity.

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High color rendering LED lighting product with improved color accuracy for applications like film production, medical lighting, and retail displays. The product uses a combination of two LED chips with specific peak wavelengths and phosphors to achieve high color rendering indices like Ra, Rf, Rg, and TLCI. The chips have different peak wavelengths and intervals adjusted based on color temperature. The phosphor composition is optimized for color fidelity and saturation. This allows LED lamps to closely match the spectral output of standard light sources for improved color rendering.

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LED integrated light source with wide adjustable color temperature and high color rendering index. The light source uses a blue LED chip and a blue LED chip to excite phosphors of red, yellow, and green to create four monochromatic light sources. The phosphors are arranged in a regular pattern on a COB substrate. The intensity of each monochromatic channel can be adjusted to tune the color temperature and color rendering index of the overall white light. This allows a wide adjustable color temperature range of 2000K to 10000K with high color rendering above 95.

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A multi-color LED light source that provides high color rendering index (CRI) by interleaving and mixing blue, green, red, and white LED chips in the light-emitting area. This integrated layout on the substrate allows for more accurate color mixing and better color rendering compared to separate white and color areas. The blue LEDs (440-465nm), green LEDs (520-550nm), and red LEDs are arranged alongside the white LEDs in the light-emitting area to achieve full-color lighting with improved color rendering compared to isolated color and white areas.

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Stacked LED chip structure for adjustable color temperature LED light sources that provides more natural light output compared to mixing lights of different color temperatures. Multiple LED chips are vertically stacked with phosphor layers on each chip. By adjusting the brightness of the stacked chips, it allows adjustment of color temperature while keeping the chromaticity on the Planckian trajectory for more natural light. Reflective glue around the chips enhances center light and reduces color distortion. The inclined reflective glue surface and phosphor coverage on the stack and substrate improve light extraction.

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A high Color Rendering Index (CRI) LED light source that provides both high color rendering accuracy and adjustable color options. The light source has separate blue, red, green, and white LED chips in individual light-emitting areas on a substrate. Each area is surrounded by a dam. Fluorescent glue fills the areas. The blue, red, green, and white LEDs emit light into the glue. This allows independent control of color balance by adjusting the intensities of the blue, red, green, and white LEDs. The fluorescent glue converts the LED light into a more natural, higher CRI white light for better color rendering.

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LED light source with improved spectral continuity for better color rendering and visual comfort. The LED light source uses a bracket with an area containing multiple light-emitting chips covered by a fluorescent glue layer. The glue contains red, yellow-green, orange-red, and infrared phosphors in specific proportions. The chips emit colored light that the phosphors absorb and re-emit, resulting in a wide spectral range with better continuity compared to a single phosphor. This fills in spectral gaps and improves color rendering for more realistic and natural colors.

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An adjustable spectrum LED light source module with improved color quality and lifespan compared to traditional LED lights. The module uses individual red, green, blue, and yellow LED chips packaged without phosphors. The chips are densely arranged on a substrate. This allows synthesizing white light by combining the primary colors instead of using phosphors. The module has a control unit to adjust the current through the chips and tune the light spectrum. It avoids phosphor limitations and aging issues.

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Full-spectrum LED device and LED equipment that provides better color rendering and spectral characteristics compared to conventional full-spectrum LEDs. The device uses multiple LED chip units with different peak wavelengths between 415nm and 470nm, each covering the blue range. They are electrically connected with balanced blue light energy distribution. Fluorescent glue with phosphor covers each chip. This balances blue light and improves spectral continuity and naturalness compared to just 1 blue LED.

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LED lamp design to improve color rendering by using a combination of white LEDs and purple LEDs. The purple LEDs emit in the UVA spectrum. The white LEDs provide the main light output while the purple LEDs fill in the UVA range. The combined light enhances color rendering compared to just white LEDs. Alternating white and purple LEDs allows overlap of the UVA range. The purple LEDs can be 400-420nm wavelength.

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A lighting device with high-color rendering using a combination of blue and purple LEDs. The device includes a substrate with blue and purple LEDs, enclosed in a phosphor-coated transparent housing. The blue and purple LEDs stimulate the phosphor to emit white light with enhanced color rendering. The combination of blue and purple light allows the emitted white light to partially overlap the UVA spectrum, significantly improving color rendering compared to devices with only blue LEDs.

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A compact illumination apparatus for endoscope distal tips that provides synchronized multi-spectral illumination for improved tissue imaging contrast. The apparatus features multiple LEDs with different peak wavelengths arranged in a circular or segmented pattern on a PCB, covered by a common phosphor layer. This design enables the endoscope tip to deliver mixed-spectrum illumination without needing separate LEDs for each wavelength, ensuring compactness and enhanced imaging capabilities.

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LED packaging structure to reduce size, simplify production, and improve yield of LED lights with multiple color temperatures. The structure involves packaging chip-sized LEDs with warm white, natural white, and neutral white colors in a cup holder. This allows compact packaging of the LEDs compared to using separate chips for each color. A lens is placed over the chips. The chip-level packaging and soldering in the cup holder reduces overall LED size, simplifies assembly, and improves yield compared to individually packaged chips. The molded lens improves light quality.

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Packaging method and structure for LED light sources with uniform color output. The method involves encapsulating the LED chip with two layers of phosphor on the chip surface and sides, and filling transparent silica gel between them. The first mold has holes for the substrate and chip, and the second mold has holes for the gel. This allows uniform color mixing from the phosphors and scattering from the gel, without thick glue layers.

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Wide color gamut LED packaging device, manufacturing method and backlight module to improve color quality of LED displays. The device uses quantum dot materials to convert blue light from the LED into pure green and red light. This provides narrower peak widths compared to conventional green phosphors, resulting in better color purity and wider color gamut when mixed with blue. The quantum dot LED packaging involves coating the quantum dots onto the blue LED chip. The backlight module uses this quantum dot LED instead of phosphors for green and red conversion.

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LED lighting source with improved white light extraction efficiency and color adjustment capability. The LED light source has three blue LED chips, one each with a yellow, red, and green phosphor coating. This configuration allows separate excitation of the phosphors without phosphor-phosphor light absorption. The blue, yellow, and green emissions combine to create white light. By varying the brightness of the blue, yellow, and green channels, the white light color temperature can be adjusted dynamically.

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LED full-spectrum color mixing using seven primary colors instead of the traditional RGB to achieve wider color gamut, better white light quality, and higher color rendering. The method involves using an RGBWCLA (red, green, blue, white, cyan, light) seven-color LED in each mixing module. The duty cycles of the seven colors are adjusted to mix target colors or white light. This allows covering a larger chromaticity area, wider correlated color temperature range, full-spectrum white light, and higher color rendering.

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LED lamp panel with consistent color and brightness across chips and manufacturing method to achieve it. The lamp panel has an LED chip array on a substrate with an adjustment layer between the chips and substrate. The adjustment layer contains fluorescent powder with varying concentration and wavelength for chips with different emission colors. For chips with same color, the adjustment layer has varying transparency. This customization in the adjustment layer compensates for variations in the base LED chips to improve color and brightness uniformity in the final panel.

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