LED device and display module

Abstract

The present application relates to a kind of LED device and display module, the LED device includes support and the red luminescent body, green luminescent body, blue luminescent body, yellow luminescent body and cyan luminescent body being arranged on the support;The support is equipped with at least 2 independent bowl cup structures, and the red luminescent body, green luminescent body, blue luminescent body, yellow luminescent body and cyan luminescent body are arranged in the bowl cup structure, and plastic fence is arranged between the bowl cup structure.The LED device of the present application increases the luminescent body capable of emitting yellow and cyan, greatly widens the color gamut, and, the superposition of the multiple primary colors of the LED device of the present application can synthesize white light with continuous spectrum, so that the light emitted is more real and natural;The white light source has good color rendering, and when being irradiated to the illuminated object, it has more natural and more real color restoration.

Description

Technical Field

[0001] This invention relates to the field of LED display technology, and in particular to an LED device and a display module. Background Technology

[0002] In recent years, market demand for emerging technologies such as XR virtual photography and commercial complex display space design has been continuously growing, leading to increasingly diverse display requirements. Among these, LED displays, as display systems, play a crucial role in creating immersive scenes for XR virtual photography, shaping modern canopy decorations to enhance the three-dimensionality of space, and providing visitors with a perfect viewing experience. XR virtual photography differs from traditional scene shooting. Traditional scene shooting only requires specifications for brightness, grayscale, refresh rate, and consistency, while the LED displays used in XR virtual photography not only need to guarantee the shooting effect of professional cameras but also meet the higher specifications of frame rate and color required for virtual photography. In commercial complex display space design, designers increasingly need to utilize high-tech display methods to create a three-dimensional effect in space, providing visitors with a perfect viewing experience. Furthermore, LED lights are widely used as lighting sources, and as people's living standards continue to improve, the demand for more natural lighting effects from LED lights is also constantly increasing.

[0003] Existing technology uses TOP tri-color LED devices to manufacture LED displays or LED lights. These tri-color LED devices are made of red, green, and blue light-emitting chips. Specifically, the red chip has a wavelength range of 580nm–670nm, with a peak wavelength of 610nm–650nm; the green chip has a wavelength range of 570nm–620nm, with a peak wavelength of 510nm–540nm; and the blue chip has a wavelength range of 400nm–540nm, with a peak wavelength of 420nm–470nm. Here, "wavelength range" refers to the range of light wavelengths, and "peak wavelength" refers to the wavelength corresponding to the peak luminous intensity.

[0004] However, displays made with tri-color LED devices have poor color effects and atmospheric rendering effects, and the images displayed on the displays are not natural or realistic enough; LED lights made with tri-color LED devices also have problems with unnatural lighting effects, making it difficult to meet the needs of diverse scenarios. Summary of the Invention

[0005] Therefore, the purpose of this invention is to overcome the defects or deficiencies of the prior art and provide an LED device that can emit natural and realistic light.

[0006] The LED device includes a bracket and red, green, blue, yellow and cyan light emitters disposed on the bracket. The bracket has at least two independent bowl-shaped structures. The red, green, blue, yellow and cyan light emitters are disposed within the bowl-shaped structures, and plastic partitions are provided between the bowl-shaped structures.

[0007] The LED device of the present invention adds a light emitter capable of emitting both yellow and cyan light, greatly expanding the color gamut. Furthermore, the superposition of multiple primary colors in the LED device of this application can synthesize white light with a continuous spectrum, making the emitted light more realistic and natural. This white light source has excellent color rendering properties, and when it illuminates the object, it has more natural and realistic color reproduction.

[0008] Furthermore, the support structure comprises three independent bowl-shaped structures. The red, green, and blue light emitters are housed within the first bowl-shaped structure, the yellow light emitter is housed separately within the second bowl-shaped structure, and the cyan light emitter is housed separately within the third bowl-shaped structure. The red light emitter is a red light chip, the green light emitter is a green light chip, and the blue light emitter is a blue light chip. The yellow light emitter comprises a blue light chip emitting blue light with a peak wavelength of 450nm–475nm and yellow phosphor. The cyan light emitter comprises a blue light chip emitting blue light with a peak wavelength of 450nm–475nm and cyan phosphor. While achieving a more natural and realistic light emission effect, the blue light chip of this application emits blue light with a peak wavelength of 450–475nm, which is outside the range of harmful blue light wavelengths, greatly reducing short-wavelength harmful blue light and preventing damage to the human eye from blue light.

[0009] Furthermore, the peak wavelength of the yellow light emitted by the yellow light emitter is 540nm to 600nm; the peak wavelength of the cyan light emitted by the cyan light emitter is 470nm to 550nm. The wavelength range of the superposition of multiple primary colors in the LED device of this application can cover the visible light range from 420nm to 780nm.

[0010] Furthermore, the full width at half maximum (FWHM) of the yellow light emitted by the yellow emitter is 60 nm to 120 nm; the FWHM of the cyan light emitted by the cyan emitter is 20 nm to 80 nm. The relatively wide FWHMs of the yellow emitter 40 and the cyan emitter 50 result in a more uniform spectral distribution for the LED device, closely resembling the smooth spectral distribution of natural light. This smooth distribution lacks obvious peak wavelengths and exhibits smaller peaks and valleys, thus improving the color rendering index and effectively simulating the luminous effect of natural light.

[0011] Furthermore, the yellow light emitter also includes a yellow phosphor, which comprises one or more of aluminates, silicates, and nitrides. The yellow phosphor of this application can improve conversion efficiency while also absorbing harmful blue light, reducing the content of harmful blue light to below 5%.

[0012] Furthermore, the yellow phosphor includes Ga-YAG and Sr2SiO4:Eu. 2+ (BaSr)2SiO4:Eu 2+ La3Si6N 11 :Ce 3+ One or more of them.

[0013] Furthermore, the cyan light emitter also includes cyan phosphor, which comprises one or more of nitrogen oxides, silicates, and aluminates. The cyan phosphor of this application can improve conversion efficiency while also absorbing harmful blue light, reducing the content of harmful blue light to below 5%.

[0014] Furthermore, the cyan phosphor comprises SiAlON:Eu 2+ BaSiON2:Eu 2+ Ba2SiO4:Eu 2+ One or more of LuAG.

[0015] Furthermore, the yellow light emitter also includes a red phosphor, which comprises one or more of nitrides, sulfides, and fluorides. The red phosphor of this application can adjust the color temperature and color rendering index, thereby improving luminous efficacy.

[0016] Furthermore, the red phosphor comprises CaAlSiN3:Eu 2+ 、(Ca 1-x Sr x AlSiN3:Eu 2+ Ca2Si5N8:Eu 2+ Sr2Si5N8:Eu 2+ Ba2Si5N8:Eu 2+ CaS:Eu 2+ MgGeF6:Mn 4+ One or more of them.

[0017] Furthermore, the LED bracket includes pads and pins electrically connected to the pads. The red, green, and blue light chips are disposed on the pads, which are located at the bottom of the cup-and-bowl structure. There are six pads, each connected to one of the six pins. Five of the pins are electrically connected to the base (B) of the corresponding chips of the red, green, blue, yellow, and cyan light emitters, respectively, and one pin is electrically connected to the anode (A) of the five chips. Individual electrical connection of each light emitter to the control component helps the LED device adapt to the lighting or display rendering requirements of different scenarios.

[0018] Furthermore, the front sides of the pads are exposed within the cup-shaped structures to form functional portions. The first cup-shaped structure includes five functional portions, and the second and third cup-shaped structures each include two functional portions. The two functional portions within the first cup-shaped structure are electrically connected to one functional portion within each of the second and third cup-shaped structures, respectively. The remaining functional portions within the cup-shaped structures are mutually insulated. The functional portions formed by the pads fully utilize the space of the cup-shaped structure, facilitating chip placement and improving heat dissipation efficiency.

[0019] Furthermore, a display module is provided, including at least two of the aforementioned LED devices, which are disposed on a substrate.

[0020] To better understand and implement this invention, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description

[0021] Figure 1 This is a structural diagram of the LED device in Example 1;

[0022] Figure 2 This is a diagram of the pad structure of the LED device in Example 1;

[0023] Figure 3 The image shows the spectral analysis of the blue light chip in Example 1.

[0024] Figure 4 This is a spectral analysis diagram of the LED device in Example 1;

[0025] Figure 5 The images are CIE 1931 chromaticity diagrams corresponding to Example 1 and Comparative Example 1.

[0026] Figure description: Red light emitter 10, green light emitter 20, blue light emitter 30, yellow light emitter 40, cyan light emitter 50, bracket 100, first bowl-cup structure 101, second bowl-cup structure 102, third bowl-cup structure 103, plastic partition 110, solder pad 200, common A-pole solder pad 201, first B-pole solder pad 202, second B-pole solder pad 203, third B-pole solder pad 204, fourth B-pole solder pad 205, fifth B-pole solder pad 206, functional parts 201a, 201b, 201c, 201d, 202a, 203a, 204a, 205a, 206a, pin 220. Detailed Implementation

[0027] To address the shortcomings of existing LED displays composed of three-color LED devices, such as unnatural and unrealistic image display and unnatural LED lighting effects, this invention analyzes these shortcomings: The wavelength range of natural light spectrum is continuous, with visible light ranging from 380nm to 780nm, each wavelength corresponding to a different color. However, existing three-color LED devices only possess red, green, and blue as primary colors. While they can synthesize white light, the wavelength range of the synthesized white light spectrum is not continuous, resulting in unnatural images and lighting effects. Furthermore, because three-color LED devices lack light corresponding to certain wavelengths, they cannot synthesize all colors visible to the human eye, leading to a narrow color gamut and unrealistic display effects. Therefore, this invention redesigns the LED device, incorporating five primary colors—red, green, blue, cyan, and yellow—to create an LED device with five primary colors. The following detailed description, in conjunction with the accompanying drawings and embodiments, further clarifies these shortcomings.

[0028] Example 1

[0029] Please see Figure 1 The LED device of this application includes a bracket 100 and red light emitters 10, green light emitters 20, blue light emitters 30, yellow light emitters 40, and cyan light emitters 50 disposed on the bracket 100. The red light emitter 10 may be a red light chip, emitting red light in the range of 580nm to 670nm, with a peak wavelength of 620nm to 640nm. Here, the range of wavelengths refers to the range of light waves, and the peak wavelength refers to the wavelength at which the luminous intensity of the light reaches its peak value.

[0030] The green light emitter 20 can be a green light chip, which emits green light in the range of 570nm to 620nm and emits green light with a peak wavelength of 515nm to 535nm.

[0031] The blue light emitter 30 can be a blue light chip, which emits blue light in the range of 420nm to 540nm, with a peak wavelength of 450nm to 475nm.

[0032] The yellow light emitter 40 includes a blue light chip and a yellow phosphor. The blue light emitted by the blue light chip excites the yellow phosphor to form yellow light. The wavelength range of this yellow light is 490nm to 780nm, the peak wavelength is 540nm to 600nm, and the half-width at half-maximum (HWHM) is 60nm to 120nm. Here, HWHM is defined as the peak width at half the height of the spectral peak.

[0033] The cyan light emitter 50 includes a blue light chip and a cyan phosphor. The blue light emitted by the blue light chip excites the cyan phosphor to form cyan light. The wavelength range of the cyan light is 470nm to 600nm, the peak wavelength is 470nm to 550nm, and the half-maximum width is 20nm to 80nm.

[0034] The red light emitter 10, green light emitter 20, blue light emitter 30, yellow light emitter 40, and cyan light emitter 50 of this invention combine to form a spectrally continuous LED light source. This provides a spectrum that more closely resembles the continuous spectrum of natural light, enabling the synthesis of more colors of light perceptible to the human eye. This provides users with excellent lighting effects, allowing for an indoor experience similar to that of outdoor lighting. Furthermore, the yellow light emitter 40 and cyan light emitter 50 have wider full width at half maximum (FWHM), resulting in a more uniform spectral distribution of the LED device. This distribution is smoother than that of natural light, lacking obvious peak wavelengths and exhibiting smaller peaks and valleys. Therefore, it improves the color rendering index and effectively simulates the luminous effect of natural light.

[0035] Furthermore, the yellow emitter 40 and cyan emitter 50 of this application have relatively wide full width at half maximum (FWHM), thus requiring only a smaller combination of phosphor colors to achieve continuous spectrum coverage and a high color rendering index. Compared to using multiple combinations of phosphors with narrower FWHMs to achieve the same high color rendering index, this application uses fewer types of phosphors, and correspondingly, fewer emitters need to be controlled and adjusted. In practical applications, this allows for more convenient adjustment of the LED device's luminous effect according to specific needs.

[0036] It is understandable that many factors affect the half-width of LED phosphors, including the type and concentration of fluorescent substances, grain size, and substrate material. Changes in these factors will affect the half-width, making the actual measured half-width a range rather than a single value.

[0037] It should be noted that in traditional applications where blue LED chips excite phosphors, shorter wavelengths of light have higher photon energy. These higher-energy photons make it easier to excite the phosphor and produce a strong luminescence. Therefore, blue LED chips that emit shorter wavelengths of light are typically chosen as excitation chips, with wavelengths ranging from 400nm to 540nm and peak wavelengths from 420nm to 470nm. However, a significant portion of the light emitted by existing blue LED chips is short-wavelength blue light, falling within the harmful blue light range of 400nm to 450nm. Because this harmful blue light has high energy, it can directly penetrate the cornea and lens to reach the retina, causing significant harm, including but not limited to eye strain, macular degeneration, blurred vision, retinal damage, and night blindness. Harmful blue light from LED devices also poses a significant risk to the retina when it enters the human eye. The blue light chip of this application emits blue light with a peak wavelength outside the harmful blue light wavelength range of 400nm to 450nm, reducing the content of harmful blue light to 5% and fundamentally avoiding damage to the human eye caused by harmful blue light with wavelengths of 400nm to 450nm.

[0038] Furthermore, the inventors discovered that because the blue light emitted by the blue chip in this application has a long wavelength and low energy, the conversion efficiency for exciting the phosphor to emit light is low, and a small amount of harmful short-wavelength blue light is also present. Therefore, the inventors further studied the phosphor material, using phosphor materials with different compositions than conventional ones. Specifically, the yellow phosphor includes aluminates and silicates or nitrides, specifically including Ga-YAG, Sr2SiO4:Eu 2+ (BaSr)2SiO4:Eu 2+ or La3Si6N 11 :Ce 3+ The cyan phosphor comprises nitrogen oxides and silicates or aluminates, specifically SiAlON:Eu 2+ BaSiON2:Eu 2+ Ba2SiO4:Eu 2+ Or LuAG. The yellow and cyan phosphors of this application can improve conversion efficiency while absorbing harmful blue light, reducing the content of harmful blue light to below 5%.

[0039] Furthermore, to adjust the color temperature and color rendering index and improve luminous efficacy, red phosphor can be added to the yellow phosphor. The red phosphor includes nitrides and sulfides or fluorides, specifically CaAlSiN3:Eu 2+ 、(Ca 1-x Sr x AlSiN3:Eu 2+ Ca2Si5N8:Eu 2+, Sr2Si5N8:Eu 2+ , Ba2Si5N8:Eu 2+ , CaS:Eu 2+ or MgGeF6:Mn 4+ . The yellow phosphor can be used in combination with the red phosphor to further improve the conversion efficiency of the blue-light-excited phosphor and further absorb harmful blue light.

[0040] Please refer to Figure 3 , which is the spectral analysis diagram of the blue-light chip of this embodiment. This application uses a blue-light chip with a wavelength range of 420nm to 540nm. In particular, the peak wavelength of the blue light emitted by the blue-light chip of this application is 450nm to 475nm, outside the wavelength range of harmful blue light, greatly reducing the short-wavelength harmful blue light, and the content of harmful blue light is reduced to less than 5%. Although the blue light of this application contains less short-wavelength blue light and the emitted blue light has lower energy, the materials of the yellow phosphor, cyan phosphor and red phosphor of this application can cooperate well with the blue-light chip used in this application and have a high conversion efficiency. Please refer to Figure 4 , which is the spectral analysis diagram of the LED device of this embodiment. It can be seen from the figure that the heights of the peak emission intensities of yellow light and cyan light are basically the same as that of blue light. It can be seen that compared with traditional applications, the light-emitting effect of the phosphor in this application will not be reduced due to the reduction of the blue light energy emitted by the blue-light chip.

[0041] In this embodiment, the bracket 100 is provided with 3 independent bowl structures, and the red light-emitting body 10, green light-emitting body 20, blue light-emitting body 30, yellow light-emitting body 40 and cyan light-emitting body 50 are arranged in the bowl structures. Specifically, the red light-emitting body 10, green light-emitting body 20, and blue light-emitting body 30 are arranged in the first bowl structure 101, the yellow light-emitting body 40 is separately arranged in the second bowl structure 102, and the cyan light-emitting body 50 is separately arranged in the third bowl structure 103. There is a plastic partition 110 between the bowl structures to prevent light leakage between the light-emitting bodies in the bowl structures. Further, the 3 bowl structures are arranged in a "pin" shape, which can make full use of the space inside the bracket, make the positions of the lamp beads more compact, and make the mixing of adjacent lamp beads more uniform. In other embodiments, the positions of the chips can be adjusted as needed, not limited to this embodiment.

[0042] When using the LED device of this application, the light emitted by the light-emitting body can be mixed to form white light or light of other colors.

[0043] In this embodiment, each red light-emitting body, green light-emitting body, blue light-emitting body, yellow light-emitting body and cyan light-emitting body in the LED device of this application is separately electrically connected to the control component. Specifically, please refer to Figure 1 and Figure 2The LED device of this application also includes a pad 200, which has corresponding conductive pins 220. The chip of this application is disposed on the pad and electrically connected to the pad through conductive solder or wire. The pads are disposed at the bottom of the cup-and-bowl structure, and there are six pads in total, each connected to one of the six pins. Five of the pins are electrically connected to the A-pole of the five corresponding light-emitting chips, and one pin is electrically connected to the B-pole of the five chips.

[0044] The front sides of the pads are exposed within the cup-shaped structure to form functional sections, which are used to place LED chips or for wire bonding. The first cup-shaped structure 101 includes five functional sections, and the second cup-shaped structure 102 and the third cup-shaped structure 103 each include two functional sections. The two functional sections in the first cup-shaped structure 101 are electrically connected to one functional section of the second cup-shaped structure 102 and the third cup-shaped structure 103, respectively. The remaining functional sections within the cup-shaped structure are mutually insulated.

[0045] More specifically, the six pads are a common A-pole pad 201, a first B-pole pad 202, a second B-pole pad 203, a third B-pole pad 204, a fourth B-pole pad 205, and a fifth B-pole pad 206. The common A-pole pad 201 connects to the functional parts 201a and 201b that form electrical connections within the first cup structure 101, and forms functional parts 201c and 201d that form electrical connections within the second cup structure 102 and the third cup structure 103, respectively. The first B-pole pad 202, the second B-pole pad 203, and the third B-pole pad 204 connect to the first cup structure 101, and form functional parts 202a, 203a, and 204a that form electrical connections within the first cup structure 101, respectively. The fourth B-pole pad 205 connects to the second cup structure 102 and forms a functional part 205a that forms an electrical connection within the second cup structure 102. The fifth B-pole pad 206 connects to the third cup structure 103 and forms a functional part 206a that forms an electrical connection within the third cup structure 103.

[0046] Furthermore, the common A-pole pad 201 includes at least one through hole to increase the bonding strength between the pad and the LED bracket plastic material.

[0047] The blue light chip of the first bowl-shaped structure 101 is disposed in the functional section 203a and connected to functional sections 201a, 202a, and 203a via leads. The green light chip of the first bowl-shaped structure 101 is disposed in the functional section 203a and connected to functional sections 201a and 203a via leads. The red light chip is vertically disposed in the functional section 201b and connected to functional section 204a only via leads. The blue light chip of the second bowl-shaped structure 102 is disposed in the functional section 205a and connected to functional sections 201c and 205a via leads. The blue light chip of the third bowl-shaped structure 103 is disposed in the functional section 206a and connected to functional sections 201d and 206a via leads.

[0048] The current flowing through each light-emitting element can be individually controlled by controlling the pin corresponding to each light-emitting element, thereby controlling and adjusting the light-emitting effect of the LED device. Since the red light-emitting element 10, green light-emitting element 20, and blue light-emitting element 30 in this embodiment are directly emitted by the chip, the red, green, and blue chips have high color purity. Therefore, when a high-saturation display effect is required, only the red light-emitting element 10, green light-emitting element 20, and blue light-emitting element 30 can be lit for rendering; when simulating indoor and outdoor lighting scenes to fully reproduce the colors of the illuminated objects and obtain a more realistic image, all five colors—red light-emitting element 10, green light-emitting element 20, blue light-emitting element 30, yellow light-emitting element 40, and cyan light-emitting element 50—can be lit simultaneously for rendering. By controlling the light-emitting state of different light-emitting elements, the LED device in this embodiment can adapt to the lighting or display rendering requirements of different scenes.

[0049] In this embodiment, both the pads and pins are made of metal. The chip dissipates heat through the pads and pins, which improves the heat dissipation efficiency of the bracket 100, prevents the chip from being damaged due to prolonged heat, and thus extends the lifespan of the LED assembly. To fully utilize the space of the cup-and-bowl structure and improve heat dissipation efficiency, in this embodiment, the green light emitter 20 and the blue light emitter 30 are disposed on the same pad, while the red light emitter 10, the yellow light emitter 40, and the cyan light emitter 50 are disposed on three separate pads. In other embodiments, the arrangement of the pads and pins can be adjusted as needed and is not limited to this embodiment.

[0050] Alternatively, at least two LED devices as described in this embodiment can be disposed on the substrate to form a display module.

[0051] Comparative Example 1

[0052] Comparative Example 1 is basically the same as Example 1, except that the LED device in the comparative example includes a bracket 100 and red light emitter 10, green light emitter 20 and blue light emitter 30 disposed on the bracket 100, and does not include yellow light emitter 40 and cyan light emitter 50.

[0053] To further verify the technical performance of the LED device in this application, please refer to... Figure 5 Those skilled in the art have drawn CIE 1931 chromaticity diagrams corresponding to Example 1 and Comparative Example 1. The CIE 1931 chromaticity diagrams are used to visually represent the color gamut range and boundaries of this application and the prior art. In the diagrams, the black triangular areas represent the color gamut of the LED device in Comparative Example 1, and the quadrilateral areas represent the color gamut of the LED device in Example 1. The difference between the quadrilateral areas and the black triangular areas represents the increase in color gamut in Example 1 compared to Comparative Example 1. Calculations show that the color gamut of the LED device in this application is improved by 37%.

[0054] Compared to existing technologies, the LED device of this application adds the ability to emit yellow and cyan light, significantly widening the color gamut. Furthermore, the wavelength range of the multiple primary colors superimposed in the LED device of this application can cover visible light from 420nm to 780nm, enabling the synthesis of white light with a continuous spectrum, making the emitted light more realistic and natural. This white light source has excellent color rendering, providing more natural and realistic color reproduction when illuminating objects. The wide full width at half maximum (FWHM) of the yellow and cyan emitters results in a more uniform spectral distribution of the LED device, closely resembling the smooth spectral distribution of natural light, without obvious peak wavelengths and exhibiting smaller peaks and valleys. This improves the color rendering index and effectively simulates the luminous effect of natural light. In addition, the blue light chip of this application emits blue light with a peak wavelength of 450nm to 475nm, outside the range of harmful blue light wavelengths, greatly reducing short-wavelength harmful blue light and preventing damage to the human eye. Meanwhile, since the light from the yellow and cyan light emitters in this application is generated by blue light exciting special phosphors, the LED devices in this application have high conversion efficiency and can also reasonably adjust the proportion of phosphors according to different scenarios to adjust the color temperature of the emitted light and adapt to the rendering needs of lighting or displays in different scenarios.

[0055] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and the present invention also intends to include these modifications and variations.

Claims

1. An LED device, characterized in that: The device includes a support frame and red, green, blue, yellow, and cyan light emitters mounted on the support frame. The support frame has three independent bowl-shaped structures. The red, green, blue, yellow, and cyan light emitters are disposed within each bowl-shaped structure, with plastic partitions separating the bowl-shaped structures. The red, green, and blue light emitters are located within a first bowl-shaped structure, the yellow light emitter is located solely within a second bowl-shaped structure, and the cyan light emitter is located solely within a third bowl-shaped structure. The red light emitter is a red LED chip, the green light emitter is a green LED chip, the blue light emitter is a blue LED chip, the yellow light emitter includes a blue LED chip emitting blue light with a peak wavelength of 450nm~475nm and yellow phosphor, and the cyan light emitter includes a blue LED chip emitting blue light with a peak wavelength of 450nm~475nm and cyan phosphor. The peak wavelength of the yellow light emitted by the yellow light emitter is 540 nm to 600 nm, and the peak wavelength of the cyan light emitted by the cyan light emitter is 470 nm to 550 nm; the half-width at half-maximum (WHM) of the yellow light emitted by the yellow light emitter is 60 nm to 120 nm; and the half-width at half-maximum (WHM) of the cyan light emitted by the cyan light emitter is 20 nm to 80 nm.

2. The LED device according to claim 1, characterized in that: The yellow phosphor includes one or more of aluminates, silicates, and nitrides.

3. The LED device according to claim 2, characterized in that: The yellow phosphor includes Ga-YAG and Sr2SiO4:Eu. 2+ (BaSr)2SiO4:Eu 2+ La3Si6N 11 :Ce 3+ One or more of them.

4. The LED device according to claim 1, characterized in that: The cyan phosphor includes one or more of nitrogen oxides, silicates, and aluminates.

5. The LED device according to claim 4, characterized in that: The cyan phosphor includes SiAlON:Eu 2+ BaSiON2:Eu 2+ Ba2SiO4:Eu 2+ One or more of LuAG.

6. The LED device according to claim 1, characterized in that: The yellow luminescent body also includes red phosphor, which includes one or more of nitrides, sulfides, and fluorides.

7. The LED device according to claim 6, characterized in that: The red phosphor includes CaAlSiN3:Eu 2+ 、(Ca 1-x Sr x AlSiN3:Eu 2+ Ca2Si5N8:Eu 2+ Sr2Si5N8:Eu 2+ Ba2Si5N8:Eu 2+ CaS:Eu 2+ MgGeF6:Mn 4+ One or more of them.

8. The LED device according to claim 1, characterized in that: The bracket includes pads and pins that are electrically connected to the pads. The red, green, and blue light chips are respectively disposed on the pads. The pads are disposed at the bottom of the cup structure. There are six pads, each connected to one of the six pins. Five of the pins are electrically connected to the base (B) of the chips corresponding to the red, green, blue, yellow, and cyan light emitters, respectively. One pin is electrically connected to the base (A) of the five chips.

9. The LED device according to claim 8, characterized in that: The front side of each pad is exposed within the cup structure to form a functional part. The first cup structure includes five functional parts, and the second and third cup structures each include two functional parts. The two functional parts in the first cup structure are electrically connected to one functional part in the second and third cup structures, respectively. The remaining functional parts within the cup structure are mutually insulated.

10. A display module, characterized in that: It includes at least two LED devices according to any one of claims 1 to 9, wherein the LED devices are disposed on a substrate.

Images