Full-spectrum FCOB lamp strip

Abstract

The utility model provides a full-spectrum FCOB lamp strip. The full-spectrum FCOB lamp strip comprises a substrate, a plurality of LED chips and fluorescent glue used for packaging the LED chips. The plurality of LED chips comprise a plurality of low-wave-band flip chips and a plurality of high-wave-band flip chips, and the plurality of short-wave-band flip chips and the plurality of high-wave-band flip chips are alternately arranged on the substrate in an array.

Description

Technical Field

[0001] This application relates to the field of decorative lighting technology, and in particular to a full-spectrum FCOB light strip. Background Technology

[0002] While existing FCOB (Full Chip On Board) LED strips are widely used in the market, most only provide illumination at a single color temperature, failing to meet the needs of natural light, plant growth, and multi-scenario applications. Current LED strip technologies have limited spectral density, unable to cover the full spectrum, and are particularly inadequate in areas such as eye protection, health lighting, plant lighting, and regulation of human circadian rhythms. Utility Model Content

[0003] The purpose of this application is to provide a full-spectrum FCOB light strip and its control method to solve the problem that the existing FCOB light strips have a narrow and singular lighting range, which cannot meet the needs of natural light, plant growth and multi-scene applications, and cannot cover the full spectrum.

[0004] On the one hand, this application provides a full-spectrum FCOB light strip, including a substrate, multiple LED chips, and phosphor adhesive for encapsulating the LED chips;

[0005] The plurality of LED chips include a plurality of low-band flip chips and a plurality of high-band flip chips, which are arranged in an array and alternately disposed on the substrate.

[0006] The low-band flip chip is a short-wavelength blue light flip chip, and the high-band flip chip is a long-wavelength blue light flip chip.

[0007] The peak wavelength range of the short-wavelength blue light flip chip is 447.5nm-450nm, and the peak wavelength range of the long-wavelength blue light flip chip is 457.5nm-460nm.

[0008] The ratio of the number of short-wavelength blue light flip chips to the number of long-wavelength blue light flip chips is 1:1.

[0009] The fluorescent adhesive comprises silica gel, green phosphor, red phosphor, and far-red phosphor. The peak wavelength of the green phosphor ranges from 511.5 to 513.5 nm, the wavelength of the red phosphor ranges from 651.5 to 653.5 nm, and the wavelength of the far-red phosphor ranges from 711.5 to 748.5 nm. The weight ratio of the green phosphor, red phosphor, and far-red phosphor is 1:(0.11-0.24):(0.06-0.14).

[0010] As described above, the full-spectrum FCOB light strip of this application has the following beneficial effects:

[0011] By employing a full-spectrum FCOB light source and anti-blue light design, it provides illumination close to natural light, reduces blue light radiation, lowers eye fatigue, protects eyesight, and offers significant eye protection. The light strip's color temperature and brightness are adjustable; users can select 2700K, 3000K, 4000K, or 5000K color temperatures to suit different lighting needs at different times of day, providing a more comfortable visual experience. The application of FCOB technology improves the efficiency of the light source, reduces energy consumption, and extends the lifespan of the light strip. It can automatically sense changes in ambient light and adjust accordingly, ensuring the light is always at its optimal level and reducing unnecessary power waste. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of a full-spectrum FCOB light strip provided in an embodiment of this application. Detailed Implementation

[0013] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. This application can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be noted that, unless otherwise specified, the following embodiments and features in the embodiments can be combined with each other.

[0014] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application. Therefore, the drawings only show the components related to this application and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0015] It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of this application. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness or purpose of this application, should still fall within the scope of the technical content disclosed in this application. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and are not intended to limit the scope of this application. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this application.

[0016] like Figure 1 As shown, Figure 1 This is a schematic diagram of the structure of a full-spectrum FCOB light strip according to an embodiment of the present application. The full-spectrum FCOB light strip includes a substrate 1, a plurality of LED chips 2, and phosphor 3 for encapsulating the LED chips 2. The plurality of LED chips 2 include a plurality of low-band flip chips 21 and a plurality of high-band flip chips 22. The plurality of low-band flip chips 21 and the plurality of high-band flip chips 22 are arranged in an array and alternately disposed on the substrate 1.

[0017] In this embodiment, multiple LED chips 2 are arranged in a single row on the substrate 1. The light strip uses a specially designed LED array and a dual-band blue light excitation method for phosphors to ensure a wider spectral range and higher color saturation. The LED chips 2 of the light strip are flip-chip LED light sources, which can provide high brightness output and have a long service life.

[0018] The low-wavelength flip chip 21 is a short-wavelength blue light flip chip, and the high-wavelength flip chip 22 is a long-wavelength blue light flip chip. The peak wavelength range of the short-wavelength blue light flip chip is 447.5nm-450nm, and the peak wavelength range of the long-wavelength blue light flip chip is 457.5nm-460nm. The ratio of the number of short-wavelength blue light flip chips to the number of long-wavelength blue light flip chips is 1:1.

[0019] In this embodiment, the blue light spectrum output of the light strip includes, but is not limited to, the following wavelength ranges: Blue light band: 447.5nm-450nm + 457.5nm-460nm. The reason for the 1:1 ratio of the number of short-wavelength blue light flip chips to the number of long-wavelength blue light flip chips is that the phosphor absorption degree of the chips will be different after using a combination of blue light chips of various wavelengths. It is preferable that the ratio of short-wavelength blue light chips to long-wavelength blue light chips is 1:1, at which time the color emitted by the FCOB light source is more uniform.

[0020] The fluorescent adhesive 3 comprises silica gel, green phosphor, red phosphor, and far-red phosphor. The peak wavelength of the green phosphor ranges from 511.5 to 513.5 nm, the wavelength of the red phosphor ranges from 651.5 to 653.5 nm, and the wavelength of the far-red phosphor ranges from 711.5 to 748.5 nm. The weight ratio of the green phosphor, red phosphor, and far-red phosphor is 1:(0.11-0.24):(0.06-0.14).

[0021] In this embodiment, when the peak wavelength of the green phosphor is preferably 512nm, the peak wavelength of the red phosphor is preferably 652nm, and the peak wavelength of the far-red phosphor is preferably 735nm, the FCOB light strip exhibits the highest luminous efficacy, the best spectral continuity, and the highest yield with a color rendering index (Ra) of 99 or higher. The weight ratio of green phosphor, red phosphor, and far-red phosphor is 1:(0.11-0.24):(0.06-0.14). Based on this weight ratio, the FCOB light strip can achieve a spectrum close to the solar spectrum within the range of low color temperature (2200K) to high color temperature (7000K), with a color rendering index (Ra) of 99 or higher. The combined use of green phosphor, red phosphor, and far-red phosphor also plays an important role in improving spectral continuity and enhancing the color rendering index (Ra), color saturation (Rg), and color fidelity (Rf).

[0022] Furthermore, blue light can be suppressed by using multi-color LED mixing technology, thereby reducing the proportion of blue light. For example, blue light emitted by a blue LED chip excites yellow phosphors to produce yellow light, which is then mixed with the blue light to form white light. By adjusting the phosphor ratio and the LED structure, the proportion of blue light can be reduced, thus achieving the effect of suppressing blue light. Specifically, by mixing green phosphor, red phosphor, and far-red phosphor in a weight ratio of 1:(0.11-0.24):(0.06-0.14), blue light can be effectively suppressed.

[0023] In the manufacturing process of this full-spectrum FCOB light strip, the strip can be configured with different lengths (e.g., 1 meter, 2 meters, 5 meters) and power (e.g., 10W / m, 20W / m) according to user needs, adapting to different usage environments. This full-spectrum FCOB light strip is suitable for homes, offices, studies, bedrooms, and other places, and is particularly suitable for environments where prolonged use of computers, mobile phones, or other electronic devices is required, effectively reducing eye strain. The light strip adopts high-efficiency heat dissipation materials and structural design, effectively improving thermal management performance and extending service life. The full-spectrum FCOB light strip provided in this application solves the shortcomings of existing technologies, such as narrow and singular lighting range, providing a more diversified and intelligent lighting experience. This light strip not only meets the needs of conventional lighting but also satisfies special needs such as eye protection, healthy lighting, plant growth, and other health-related lighting, and has broad application prospects.

[0024] Based on the above full-spectrum FCOB light strip, this invention provides a control method for a full-spectrum FCOB light strip, which includes steps S1-S2:

[0025] S1. Obtain the number of each LED chip 2; Step S1 includes steps S11-S12:

[0026] S11. Store the position of each LED chip 2 in a preset database; Step S11 includes steps S111-S112:

[0027] S111. Establish a rectangular coordinate system with the plane where the substrate 1 is located, and obtain the coordinates of each LED chip 2 in the rectangular coordinate system.

[0028] In this embodiment, a Cartesian coordinate system can be established on the plane of the substrate 1, with the LED chip 2 located on the leftmost side of the substrate 1 as the origin, and the line connecting the origin and parallel to the bottom edge of the substrate 1 as the x-axis. Thus, by marking the coordinates of each LED chip 2 using the Cartesian coordinate system, the position of each LED chip 2 can be clearly determined, and the arrangement and location of each LED chip 2 can be quickly reconstructed on other software platforms.

[0029] S112. Store the coordinates of each LED chip 2 in the database.

[0030] S12. Generate a number in the database based on the location.

[0031] In this embodiment, a number is generated for each LED chip 2 and associated with its position and coordinates. The position and coordinates of the LED chip 2 can be obtained through the number.

[0032] S2. Control multiple LED chips 2 according to their serial numbers. Step S2 includes steps S21-S23:

[0033] S21. Group LED chips of the same color into two groups.

[0034] In this embodiment, through the combined action of different LED chips 2 and different phosphors 3, the LED chips 2 can emit light of different colors and intensities through the phosphors 3. By pre-setting the combination of phosphors 3 and LED chips 2 and storing the combination in a database, the information of LED chips 2 that emit the same color stored in the database is found according to the combination, and the LED chips 2 that emit the same color are grouped together.

[0035] S22. Generate multiple channels based on grouping and numbering; Step S22 includes steps S221-S223:

[0036] S221. Generate the R channel from the red group and the number of the LED chip 2 within the group;

[0037] S222. Generate the G channel by grouping the green elements and numbering the LED chips 2 within the group;

[0038] S223. Generate channel B by grouping the blue group and the numbering of LED chip 2 within the group.

[0039] In this embodiment, red, green, blue (and white light) can be mixed to achieve multiple colors, and the brightness ratio of each channel needs to be controlled.

[0040] S23. Control the color and / or brightness of LED chips 2 in different groups according to the multi-channel configuration. Step S23 includes steps S231-S232:

[0041] S231, Sensing the state of ambient light.

[0042] In this embodiment, changes in ambient light can be sensed using a light-dependent resistor (LDR). The principle is that the resistance of the photoresistor changes with light intensity (the stronger the light, the lower the resistance). Circuit design: A voltage divider circuit is formed with a fixed resistor, and the light intensity is determined by measuring the voltage change. Suitable for analog signal output, it requires an ADC (analog-to-digital converter) to read the values. Advantages include low cost and ease of use. Disadvantages include lower accuracy and slower response speed (suitable for low-frequency detection).

[0043] Alternatively, an integrated ambient light sensor (ALS) can be used to sense changes in ambient light. The principle is that a dedicated chip (such as APDS-9301, BH1750, TSL2561) directly outputs a digital signal. Interfaces include I2C, SPI, or PWM output. Automatic range adjustment is supported. It can measure visible light and the spectrum sensitive to human vision (close to human eye perception). Advantages include high accuracy, interference resistance (e.g., infrared filtering), and low power consumption.

[0044] S232. Control the color and / or brightness of the multi-channel output according to the ambient light conditions.

[0045] In this embodiment, the color and / or brightness of the multi-channel output are controlled by the environment. For example, if red output with maximum intensity is required, the database is searched to find LED chips 2 that can emit red light, and all LED chips 2 that can emit red light are controlled to output light at maximum power.

[0046] In summary, this invention provides a full-spectrum FCOB light strip that offers a wider spectral output, with Ra > 99 and R1-R15 > 90, adapting to various lighting needs, especially those requiring eye protection, health lighting, plant lighting, regulation of human circadian rhythms, and high-quality lighting. The color rendering index includes 15 colors, with R1-R15 corresponding to the following colors in order: pale gray-red, dark gray-yellow, saturated yellow-green, medium yellow-green, pale blue-green, pale blue, pale purplish-blue, pale red-purple, saturated red, saturated yellow, saturated green, saturated blue, Caucasian skin tone, leaf green, and Asian skin tone.

[0047] The above embodiments are merely illustrative of the principles and effects of this application and are not intended to limit this application. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this application. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this application should still be covered by the claims of this application.

Claims

1. A full spectrum FCOB light strip, characterized in that, The substrate, a plurality of LED chips and a fluorescent glue for encapsulating the LED chips are included; The plurality of LED chips include a plurality of low-waveband flip chips and a plurality of high-waveband flip chips, and the plurality of low-waveband flip chips and the plurality of high-waveband flip chips are arranged in an array and alternately arranged on the substrate. The low-waveband flip chip is a short-wave blue light flip chip, and the high-waveband flip chip is a long-wave blue light flip chip.

2. The full spectrum FCOB light strip of claim 1, wherein, The peak wavelength of the short-wave blue light flip chip ranges from 447.5 nm to 450 nm, and the peak wavelength of the long-wave blue light flip chip ranges from 457.5 nm to 460 nm.

3. The full spectrum FCOB light strip of claim 1, wherein, The ratio of the number of short-wave blue light flip chips to the number of long-wave blue light flip chips is 1:

1.

4. The full spectrum FCOB light strip of claim 1, wherein, The fluorescent glue includes silica gel, green fluorescent powder, red fluorescent powder and far-red fluorescent powder, the peak wavelength of the green fluorescent powder ranges from 511.5 nm to 513.5 nm, the wavelength of the red fluorescent powder ranges from 651.5 nm to 653.5 nm, the wavelength of the far-red fluorescent powder ranges from 711.5 nm to 748.5 nm, and the weight ratio of the green fluorescent powder, the red fluorescent powder and the far-red fluorescent powder is 1:(0.11-0.24):(0.06-0.14).

Images