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.

Source

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.

Source

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.

Source

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.

Source

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.

Source

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.

Source

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.

Source

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.

Source

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.

Source

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.

Source

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.

Source

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.

Source

LED artificial lighting device that allows adjustable color temperature while reducing size compared to using separate high and low CCT devices. The lighting device has an LED chipset, multiple blue chip groups with different color temperatures, barriers, and phosphor. The blue groups form separate color temperature areas. The main chipset and phosphor are on the substrate. The barriers isolate the blue groups. A control circuit drives the main chipset. The phosphor is in the barriers. This allows separately adjusting the blue groups for different CCTs without needing separate devices or a large integrated lamp.

Source

Multicolor LED packaging device and method that provides independent control of red, green, and white LEDs using blue LED chips and color conversion films. The device has an LED carrier with multiple LED light-emitting units, where at least one unit has a blue LED chip covered by a color conversion film. Bonding wires connect the LED units to carrier pads. This allows separate control of each unit. The conversion films convert blue light to red, green, or white using phosphors. A packaging adhesive covers the LEDs and conversion films, optimizing light mixing.

Source

Preparation method for multicolor LED lamp beads with consistent quality and adjustable light parameters. It involves spectroscopic separation of white LED beads to get standard beads with specific wavelength and voltage. Then, a control chip, standard bead, and color beads are soldered onto a monomer. Encapsulation covers the chips and beads. A feedback module calculates light parameter differences and adjusts the color chip to match. Fixing the standard bead between ground and lamp pins optimizes chromaticity. This allows precise white light control, consistency, and self-regulation.

Source

LED flat package light source with improved heat dissipation and color rendering for applications like high-end colored lighting. The LED flat package has a substrate with the LED chip attached. The chip is coated in phosphor powder, covered with a phosphor film, or a ceramic phosphor sheet. Additionally, a matching-shaped color chip is placed over the LED chip. This configuration provides better heat dissipation from the LED chip and enhances color rendering compared to just coating the LED chip.

Source

LED lighting device for stage lighting applications that provides high color rendering, wide color gamut, small size, and low temperature dependence. The device uses a unique LED chip arrangement and packaging technique. The LED chips are arranged in a pattern where red, green, and blue chips alternate with blue chips in between. The blue chips are surrounded by grooves, and red and green chips are filled into the grooves. This allows close chip packing without chip-to-chip color mixing. The filled grooves also contain phosphor for secondary color emission. The device has a central flat area for white chips. This configuration enables compact size, reduced color mixing, and improved color rendering compared to separate multi-chip devices.

Source

LED light source with adjustable color temperature that provides a wider range of color temperatures with better color rendering and uniformity compared to conventional RGB LED sources. The light source uses multiple color LED chips (blue, green, red) and excitable phosphor layers to cover the visible spectrum. By adjusting the current through each chip, the phosphor excitation spectrum can be optimized to match user needs and maintain the color coordinate within the Planck locus for improved CRI and LER. This allows customizable color temperature while avoiding issues like narrow gamut and poor uniformity seen in RGB sources.

Source

Full-spectrum LED light source that provides better color rendering compared to traditional full-spectrum LEDs. The light source uses a specific combination of blue LED chips with different peak wavelengths, along with phosphor-mixed packaging glue, to improve color rendering in the red and blue regions. The blue chips with wavelengths of 435-450nm, 450-460nm, and 460-475nm are connected in series or parallel in the LED module. This arrangement provides better color rendering in the red (R9) and blue (R12) regions compared to using only blue chips or adding phosphors externally.

Source

LED light source with adjustable color temperature display finger and packaging method thereof. The LED light source has multiple LED chips (blue, green, red) on a substrate with a dam around them. The chips excite fluorescent powder layers that are covered by the fluorescent powder layers. By adjusting the current to each chip, the excitation spectrum of the fluorescent powder can be controlled to optimize light color and improve color rendering index. The dam protects the chips and powder.

Source

Light mixing structure for fluorescent powder-free multi-primary color LED lamps that improves color uniformity and reduces color cast compared to conventional designs. The structure involves arranging multiple phosphor-free multi-primary color LED lamp beads in a specific layout to balance and mix the primary colors. This is done by adjusting the sequence of die bonding different wavelength LED chips to create a complementary color unit within the lamp beads. The lamp beads are then arranged in a quadrilateral pattern to further balance the colors. This prevents light color shifting and enrichment in different directions, reducing color cast.

Source

LED lamp with color adjustment capability using multi-channel COB light sources. The lamp has a COB heat sink with multiple LED monochromatic chips of different colors connected in parallel. Each chip has separate channels that can be driven independently by a power supply. This allows independent control of the colors to achieve adjustable color output from the lamp. The COB design enables high power LED lighting in smaller volumes compared to using multiple discrete LEDs.

Source

LED lamp with improved full-color mixing capabilities by arranging the LED chips in a dot pattern on the circuit board. Each LED light source contains multiple LED chips of different colors arranged in a dotted pattern on the circuit board. The LED chips are symmetrically aligned around the center axis of the lens. This allows arbitrary mixing of light colors from the LED chips and improves the color mixing efficiency when the lens combines the light.

Source

Full spectrum COB (chip on board) LED light source with improved color rendering and efficiency. The light source combines blue and violet LED chips with phosphor conversion to create a full spectrum of colors. The blue LED chips are coated with phosphor to form excitation LED units. This allows the violet LED chips to directly emit violet light without phosphor, which excites the blue phosphor to create purple light. The blue, violet, and purple emissions combine to provide a full spectrum close to natural light. The encapsulation layer surrounds all the LED chips to protect them.

Source

A lighting system for facilitating plant growth that provides precise control over the color spectrum of emitted light. The system uses multiple LEDs of different colors to create a custom spectrum that can be adjusted to optimize plant growth. An external light sensor can be used to automatically adjust the intensity of the artificial light to maintain desired light levels in a greenhouse.

Source

A method to quickly and efficiently provide customized LED lamps with specific color mixing requirements without waiting for custom all-in-one LED beads. The method involves purchasing and separately soldering individual monochrome SMD LED beads onto the lamp board instead of using pre-packaged all-in-one beads. This allows LED lamp manufacturers to quickly meet customer-specific color mixing needs without the long lead times and testing cycles of custom all-in-one beads.

Source

Precisely controlling a multi-color LED light source to generate white light with tunable color temperature. The method involves operating the LEDs in continuous wave mode and not pulse width modulation. Each LED is run at least 5% of max current to prevent undercurrent. The LEDs emit blue, bluish-white, greenish-white, and red light. These are mixed to generate white light with adjustable correlated color temperature.

Source

Lighting system using LEDs to provide a desired color of light. The system allows adjustment of the color spectrum to match the needs of plants or other applications. The system can also use external sensors to adjust light intensity and turn on/off lights as needed. The ability to adjust the color, intensity, and timing of the light can optimize growth conditions.

Source

A luminous light source with dual or multi-color temperature that prevents light mottling when using LEDs with different color temperatures. The light source has an array of LEDs on a ceramic substrate with multiple light-emitting areas. The LEDs in adjacent areas have different color temperatures to blend the light and avoid distinct color boundaries. This provides a seamless transition between color temperatures without mottling when the light is turned on.

Source

Integrated LED packaging using WLP (wafer-level packaging) with improved light uniformity, side light control, and color temperature adjustment compared to conventional CSP (chip-scale packaging). The packaging involves stacking WLP structures covered with phosphor on the top surface, followed by an outermost layer with varying phosphor concentration or material. This allows customization of side light properties and color tuning. The outer layer compensates for blue light leakage from the WLP sides. It also enables selective side light blocking for directed applications. The stacked WLP/outer layer structure improves uniformity compared to CSP's single-coating difficulty.

Source

LED module for emitting mixed light, preferably white light, that can be used in lamps with small reflector sizes. The LED module has a circular light-emitting zone divided into flat sectors, like slices of a pie. Each sector can emit a different light spectrum. Phosphor can be added to the potting compound between the sectors to create white light. This allows producing a homogeneous mixed light from individual sector emissions. The circular sector design allows a small light-emitting zone suitable for small reflector lamps.

Source

Preparing self-tuning LED filaments with adjustable color temperature using chip-scale packaged flip chips. The method involves creating LED filaments with multiple chips having different color temperatures. By adjusting the current through the chips, the overall color temperature of the filament can be tuned. This allows customization of the light output by mixing colors rather than relying on fixed color filaments.

Source

Compact, high-integration LED module for full-color light output in a small form factor. The module uses die-bonded LED chips on a printed circuit board with thin film circuitry and thick film power bus. Red, green, blue, and white LED chips are mixed in the module to create any color through chip placement. The chips are wire bonded to the thin film circuit and encapsulated with phosphor. The small size is achieved by using thick film power distribution, thin film circuitry, and die-bonding rather than traditional discrete chip packaging.

Source

A lighting system for plant growth that provides precise control over light color to optimize plant growth. The system uses LEDs of different colors to create tailored light spectra optimized for specific plants and growth stages. A controller adjusts the intensity of each LED color based on external light sensors to mimic natural lighting conditions.

Source

LED lighting with optimized color spectrum for enhanced color preference compared to standard LED sources. It uses a metric called Lighting Preference Index (LPI) as a quantitative measure to design light sources with maximum color preference. The optimized composite light sources contain blue, green/yellow-green, and red emitters or downconverters in specific wavelength ranges to achieve LPI of at least 120. These optimized LED spectra provide significantly higher color preference than standard LEDs.

Source

LED light source with adjustable color temperature, wide color gamut, and good color rendering. The light source has multiple chip units (e.g., blue and green) along with a separate red light emitter. The chips and red emitter are mounted on a substrate. A thermistor and adjustment module regulate the chip current/voltage based on thermistor temperature. This allows adjusting the color temperature by varying the chip brightness while maintaining consistent red output. The separate red emitter provides wide gamut and good color rendering. The red emitter can be covered with a protective layer.

Source

RGB full-color LED lighting device based on BT packaging that provides consistent color output from RGB LEDs in a compact package. The LEDs are arranged on the BT board with separate negative connections for each color. The green LED is connected to the green negative, the blue LED to the blue negative, and the red LED to the shared positive. This allows balancing the colors despite variations in individual LED parameters. The BT board edges have matching negative and positive connections for each color.

Source

LED unit module for high color rendering lighting applications that avoids spectral loss and uniformly mixes light. The LED module has a set of LED chips arranged in a regular hexagon shape with contour close to a regular hexagon. The LED chips are red, indigo, green, amber, white/yellow, blue, and deep blue. The close-to-hexagon shape allows full coverage of the microlens, avoiding expansion. The red/amber chips are symmetrically arranged around the center, and blue/deep blue symmetrically. The white/yellow chips form a rectangle surrounded by 8 chips. This arrangement mixes light more uniformly. The modules can be arranged in concentric rings with a tolerance angle between rings. This allows collimating and homogenizing the light.

Source

LED light source assembly with improved color quality and uniformity by using a specific arrangement of LED chips on the substrate. The assembly has a central cool white LED chip surrounded by a ring of red, green, and blue LED chips to form a RGB color ring. An outer ring of warm white LED chips completes the coaxial LED stack. This arrangement provides high color saturation and uniformity compared to traditional stacked LED configurations.

Source

A light emitting module with groups of differently colored LEDs arranged in a specific pattern on a circuit board to improve color rendition, color control, and heat distribution. Groups of red LEDs are positioned on the outer circumference, followed by groups of green LEDs, and then groups of blue LEDs in the center. The red LEDs are connected in series, followed by the green and blue LEDs. The number of each type of LED increases as the wavelength decreases. The circuit board has wider traces for the red LED connections.

Source

LED lighting with high color rendering index (CRI) and adjustable color temperature. The LED array contains multiple strings, each comprising several LED chips of potentially different wavelengths, with each string controlled electronically as a separate channel. Phosphors of multiple types and emissions spectra are dispensed or applied on top of all of the individual LED chips, such that it is possible to have a different phosphor type on each individual LED chip, or on different subsets of the LED chips. The multiple channels allow for each string of LEDs and hence their output color and power to be independently switched on/off and varied in intensity, respectively. This allows the LED illuminator to provide variable or adjustable color temperature (CCT), while maintaining extremely high CRI.

Source

LED luminaire with improved color mixing and uniformity by dispersing the colored LED elements within the array to provide a uniform color output. This overcomes issues like visible color banding, non-homogeneous illumination and poor color mixing of regular patterns. The dispersed arrangement allows creating larger luminaires by replicating a base module of colored LEDs because replicating square base modules maintains the uniformity.

Source

LED dimming light source with uniform color mixing and reliability improvements compared to prior art designs. The LED dimming light source has multiple light-emitting areas created by partitioning the flip-chip LED chips on a substrate. Fluorescent glue with different color temperatures is applied to each chip in the areas. This allows mixing of different color LED light from adjacent areas when dimmed, unlike single color areas in prior designs. The partitioning prevents light from one area stimulating another chip's phosphor, avoiding image artifacts.

Source

A simpler and more efficient method to manufacture multi-color LED modules that improves light output, color mixing, and eliminates light spots compared to prior methods. The method involves directly depositing phosphor layers on the LED chips instead of using pre-packaged phosphor-coated LEDs. The steps are: 1. Prepare the LED chips with different colors. 2. Coat blue LED chips with a blue phosphor layer. 3. Coat green LED chips with a green phosphor layer. 4. Coat red LED chips with a red phosphor layer. 5. Assemble the LED chips with their respective phosphor coatings onto a substrate. 6. Encapsulate the assembled LED chips to complete the multi-color LED module. This avoids the need for separate phosphor-coated LEDs, simplifies manufacturing, and allows better color mixing and

Source

A method for manufacturing an LED light emitting device with adjustable color temperature that allows easy customization of the color temperature expression. The method involves encapsulating multiple LED chips with different color phosphors instead of mixing them inside the LED package. This allows independent adjustment of the phosphor concentrations to tune the color temperature without affecting the LED chip brightness. The LED chips and phosphors are separately packaged and combined into the final light source. This provides more flexibility and control over the color temperature compared to mixing phosphors inside the LED.

Source

Preparing a dimming LED light source that provides improved color mixing, reliability, and user experience compared to existing dimmable LED lights. The method involves encapsulating each LED chip in flip-chip form and coating different color temperature fluorescent glues onto the chip surface. The chips with mixed colors are then uniformly distributed in the die-bonding area. This eliminates the issues of visible boundaries between color regions and fragile gold wire connections when dividing the light-emitting surface into separate areas for different colors.

Source

High power multi-color LED light source with uniform and mixed color output to eliminate issues like polarization, color cast, and uneven spots in mixed color LED lamps. The source uses a compact integrated design where three LED chips of different colors (red, green, blue) are arranged in a specific configuration. The LED chips are arranged in a "product" shape where the LED chips touch each other along their perimeter, with each chip emitting a single color. This ensures that each chip's light is symmetrically mixed with the adjacent chips' light as they exit the source, preventing polarization and uneven spots.

Source

A COB (chip on board) LED light source with uniform color mixing for applications like stage lighting. The COB has a substrate with LED chips arranged in color mixing units. Each unit contains an equal number of red, green, and blue LEDs to produce a desired color. The units are spaced apart to avoid point sources. This partially mixes the colors within each unit. Then all the units emit light uniformly mixed across the COB to provide a smooth, uniform color. The COB has side walls and a cover to confine the light.

Source

An LED package structure with full spectrum light output that provides a more natural and visually appealing light compared to traditional LEDs. The structure uses multiple LED elements on a thermally conductive substrate, including blue, red, yellow, and two green LEDs. The blue LED is a blue chip, while the other colors are formed by blue chips with phosphors. This arrangement improves spectrum continuity and efficiency by using a blue chip as the starting point for all colors except red. The two green LEDs enhance the green content further. The blue-based color mixing provides better spectrum coverage compared to separate red, green, and blue LEDs.

Source

Encapsulation method for variable color temperature LED light sources that eliminates the need for retaining walls between color temperature regions. The method involves dividing the substrate into multiple closed annular regions, each with a different color temperature. LED chips of the same color temperature are mounted in a single annular region. The chips are connected in series within their annular region. Colloids with varying viscosities are applied to the chip surfaces in adjacent annular regions to prevent mixing of the fluorescent materials. This allows dividing the light source into multiple color temperature regions without gaps or retaining walls.

Source