LED device and display module

Abstract

The invention relates to an LED device and a display module. The LED device comprises a support, a red light-emitting body, a green light-emitting body, a blue light-emitting body, a yellow light-emitting body and a cyan light-emitting body, the support is provided with at least two mutually independent bowl cup structures, the red light-emitting body, the green light-emitting body, the blue light-emitting body, the yellow light-emitting body and the cyan light-emitting body are arranged in the bowl cup structures, and plastic barriers are arranged between the bowl cup structures. According to the LED device, the luminous bodies capable of emitting yellow light and cyan light are additionally arranged, the color gamut is greatly widened, and moreover, white light with continuous spectrums can be synthesized through superposition of multiple primary colors of the LED device, so that the emitted light is more real and natural; the white light source is good in color rendering property, and more natural and more real color restoration is achieved when the white light source irradiates an irradiated object.

Description

Technical Field

[0001] The present invention relates to the technical field of LED display, and in particular to an LED device and a display module. Background Art

[0002] In recent years, the market demand for emerging XR virtual shooting, commercial complex display space design and other aspects has continued to grow, and the demand for display has become increasingly rich. Among them, LED display screens, as display systems, play an important role in building immersive scenes for XR virtual shooting, shaping the three-dimensional sense of space for modern new canopy decoration, and creating a perfect viewing experience for tourists. In terms of XR virtual shooting, XR virtual is different from previous scene shooting. Previous scene shooting only required brightness, grayscale, refresh rate, and consistency, while the LED display screens used in XR virtual shooting not only need to ensure the shooting effect of professional cameras, but also need to meet the higher standards of virtual shooting. Requirements such as frame rate and color. In the design of commercial complex display space, designers are increasingly needing to use some high-tech display methods to shape the three-dimensional sense of space and create a perfect viewing experience for tourists. In addition, LED lamps are also widely used as lighting sources. With the continuous improvement of people's living standards, the requirements for LED lamps to have more natural lighting effects are also increasing.

[0003] The prior art uses TOP three-color LED devices to make LED display screens or LED lights, where the three-color LED devices are made of light-emitting chips of three colors: red, green, and blue. The red light chip has a wavelength range of 580nm to 670nm, with a peak wavelength of 610nm to 650nm; the green light chip has a wavelength range of 570nm to 620nm, with a peak wavelength of 510nm to 540nm; the blue light chip has a wavelength range of 400nm to 540nm, with a peak wavelength of 420nm to 470nm. The wavelength range refers to the wavelength range of the light wave, and the peak wavelength refers to the wavelength corresponding to the peak luminous intensity.

[0004] However, the display screen made of three-color LED devices has poor color effects and rendered atmosphere effects, and the images displayed on the display screen are not natural and realistic enough; the LED lamps made of three-color LED devices also have the problem of unnatural lighting effects, and it is difficult to meet the needs of diverse scenes. Summary of the invention

[0005] Based on this, the object of the present invention is to overcome the defects or shortcomings of the prior art and provide an LED device that can emit natural and realistic light.

[0006] The LED device includes a bracket and a red light emitting body, a green light emitting body, a blue light emitting body, a yellow light emitting body and a cyan light emitting body arranged on the bracket. The bracket is provided with at least two independent bowl-cup structures. The red light emitting body, the green light emitting body, the blue light emitting body, the yellow light emitting body and the cyan light emitting body are arranged in the bowl-cup structures. Plastic partitions are provided between the bowl-cup structures.

[0007] The LED device of the present invention adds a light-emitting body that can emit yellow and cyan lights, greatly broadening the color gamut. Moreover, the superposition of multiple primary colors of the LED device of the present application can synthesize white light with a continuous spectrum, making the emitted light more real and natural. The white light source has excellent color rendering and has more natural and realistic color reproduction when irradiating the illuminated object.

[0008] Furthermore, the bracket is provided with three independent bowl-cup structures, the red light emitter, the green light emitter, and the blue light emitter are arranged in the first bowl-cup structure, the yellow light emitter is arranged alone in the second bowl-cup structure, and the cyan light emitter is arranged alone in the third bowl-cup structure; the red light emitter is a red light chip, the green light emitter is a green light chip, the blue light emitter is a blue light chip, the yellow light emitter includes a blue light chip emitting blue light with a peak wavelength of 450nm to 475nm and yellow phosphor, and the cyan light emitter includes a blue light chip emitting blue light with a peak wavelength of 450nm to 475nm and cyan phosphor. While satisfying a more natural and realistic luminous effect, the peak wavelength of blue light emitted by the blue light chip of the present application is 450 to 475nm, which is outside the wavelength of harmful blue light, greatly reducing the harmful blue light of short wavelengths, and can avoid the damage of blue light to human eyes.

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

[0010] Furthermore, the half-peak width of the yellow light emitted by the yellow luminescent body is 60nm to 120nm; the half-peak width of the cyan light emitted by the cyan luminescent body is 20nm to 80nm. The half-peak widths of the yellow luminescent body 40 and the cyan luminescent body 50 are relatively wide, so that the spectrum of the LED device is evenly distributed, closer to the spectrum distribution of natural light, smooth, without obvious peak wavelength, and with smaller peaks and valleys, so that the color rendering index can be improved, and the luminous effect of natural light can be well simulated.

[0011] Furthermore, the yellow luminescent body further comprises yellow phosphor, and the yellow phosphor comprises one or more of aluminate, silicate and nitride. The yellow phosphor of the present application can improve the conversion efficiency and absorb harmful blue light, reducing the content of harmful blue light to less than 5%.

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

[0013] Furthermore, the cyan luminescent body further comprises cyan phosphor, which comprises one or more of nitrogen oxides, silicates, and aluminates. The cyan phosphor of the present application can improve conversion efficiency and absorb harmful blue light, reducing the content of harmful blue light to less than 5%.

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

[0015] Furthermore, the yellow luminescent body further comprises red phosphor, and the red phosphor comprises one or more of nitride, sulfide and fluoride. The red phosphor of the present application can adjust the color temperature and color rendering index, and improve the light effect.

[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 .

[0017] Furthermore, the LED bracket includes a solder pad and a pin electrically connected to the solder pad, the red light chip, the green light chip and the blue light chip are arranged on the solder pad, the solder pad is arranged at the bottom of the cup-bowl structure, the number of the solder pads is six, and the six pins are connected respectively, wherein five of the pins are electrically connected to the B poles of the chips corresponding to the red light emitter, the green light emitter, the blue light emitter, the yellow light emitter and the cyan light emitter, respectively, and one of the pins is electrically connected to the A poles of the five chips. Each light emitter is electrically connected to the control component separately, which helps the LED device adapt to the lighting or display rendering requirements of different scenes.

[0018] Furthermore, the front sides of the pads are exposed in the bowl-cup structures to form functional parts, the first bowl-cup structure includes five functional parts, the second bowl-cup structure and the third bowl-cup structure each include two functional parts, the two functional parts in the first bowl-cup structure are electrically connected to one functional part in the second bowl-cup structure and the third bowl-cup structure, respectively, and the remaining functional parts in the bowl-cup structure are insulated from each other. The functional parts formed by the pads make full use of the space of the bowl-cup structure, facilitate the arrangement of the chip, and also help improve the heat dissipation efficiency.

[0019] Furthermore, a display module is provided, comprising at least two of the LED devices, wherein the LED devices are arranged on a substrate.

[0020] For better understanding and implementation, the present invention is described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0022] Figure 2 FIG. 1 is a structural diagram of a soldering pad of an LED device of Example 1;

[0023] Figure 3 This is a spectrum analysis diagram of the blue light chip of Example 1;

[0024] Figure 4 Spectral analysis diagram of the LED device of Example 1;

[0025] Figure 5 : is the CIE 1931 chromaticity diagram corresponding to Example 1 and Comparative Example 1.

[0026] Description of the drawings: red light emitting body 10, green light emitting body 20, blue light emitting body 30, yellow light emitting body 40, cyan light emitting body 50, bracket 100, first bowl-cup structure 101, second bowl-cup structure 102, third bowl-cup structure 103, plastic fence 110, pad 200, common A-pole pad 201, first B-pole pad 202, second B-pole pad 203, third B-pole pad 204, fourth B-pole pad 205, fifth B-pole pad 206, functional parts 201a, 201b, 201c, 201d, 202a, 203a, 204a, 205a, 206a, pin 220. DETAILED DESCRIPTION

[0027] In view of the defects of the LED display screen formed by the combination of three-color LED devices in the prior art, the display image is not natural and realistic enough, and the LED lamp lighting effect is not natural enough. The technical personnel of the present application analyzed the defects: the wavelength range of the natural light spectrum is continuous, among which the wavelength range of visible light is between 380nm and 780nm, and different wavelengths correspond to different colors of light. However, the existing three-color LED devices only have three primary colors of red, green and blue. Although they can synthesize white light when used, the wavelength range of the synthesized white light spectrum is not continuous, so the image displayed by the LED display screen and the lighting effect of the LED lamp are not natural enough. In addition, since the three-color LED device lacks light corresponding to the color of some wavelength ranges, it is impossible to synthesize all the colors of light visible to the human eye. The color range that the three-color LED device can produce is narrow, that is, the color gamut of the LED device is narrow, resulting in the display effect of the LED display screen not being realistic enough. In this regard, the present invention redesigns the LED device, and the light emitters of the five colors of red, green, blue, cyan and yellow form the LED device, so that it has five primary colors. The following is a specific description in conjunction with the accompanying drawings and embodiments.

[0028] Example 1

[0029] See also Figure 1 The LED device of the present application includes a bracket 100 and a red light emitter 10, a green light emitter 20, a blue light emitter 30, a yellow light emitter 40 and a cyan light emitter 50 arranged on the bracket 100. The red light emitter 10 can be a red light chip, and the red light band range thereof is 580nm to 670nm, and the peak wavelength of the red light emitted by it is 620nm to 640nm. Among them, the band range refers to the wavelength range of the light wave, and the peak wavelength refers to the wavelength corresponding to when the luminous intensity of the light reaches the peak value.

[0030] The green light emitting body 20 may be a green light chip, which emits green light with a wavelength range of 570nm to 620nm and a peak wavelength of 515nm to 535nm.

[0031] The blue light emitting body 30 may be a blue light chip, which emits blue light with a wavelength range of 420nm to 540nm and a peak wavelength of 450nm to 475nm.

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

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

[0034] The red light emitter 10, the green light emitter 20, the blue light emitter 30, the yellow light emitter 40 and the cyan light emitter 50 of the present invention form a continuous spectrum LED light source, which has the characteristic of being closer to the continuous spectrum of natural light, can synthesize more colors of light that can be perceived by the human eye, and can provide users with good lighting effects, so that they can get a similar viewing experience to that of outdoor activities even when they are indoors. In addition, the half-peak width of the yellow light emitter 40 and the cyan light emitter 50 is wide, so that the spectrum of the LED device is evenly distributed, which is closer to the smooth spectrum distribution of natural light, has no obvious peak wavelength, and has the characteristics of smaller peaks and valleys, so that the color rendering index can be improved, and the luminous effect of natural light can be well simulated.

[0035] In addition, the half-peak width of the yellow light emitter 40 and the cyan light emitter 50 of the present application is relatively wide, so only a combination of fewer colors of phosphors is needed to achieve continuous spectrum coverage and a high color rendering index. Compared with using a combination of multiple phosphors with narrow half-peak widths to produce light to achieve the same high color rendering index, the present application uses fewer types of phosphors, and accordingly, the number of light emitters that need to be controlled and adjusted is also less, and in actual applications, the light-emitting effect of the LED device can be more conveniently adjusted according to the needs of use.

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

[0037] It should be noted that in the application of traditional blue light chips to excite phosphors to emit light, since the shorter the wavelength of light, the stronger the photon energy, the stronger the energy of the photons makes the phosphors easier to be excited and produce a strong luminous effect. Therefore, a blue light chip that can emit shorter wavelength light is usually selected as an excitation chip, and its wavelength range is 400nm~540nm, and the peak wavelength is 420nm~470nm. However, a large part of the light emitted by the blue light chip in the prior art is blue light with a shorter peak wavelength, within the harmful blue light wavelength range of 400nm~450nm. Since the harmful blue light of 400nm~450nm has strong energy, it can directly penetrate the cornea and lens to reach the retina, causing great harm to the retina, including but not limited to visual fatigue, macular degeneration, blurred vision, fundus damage, night blindness, etc. The harmful blue light of LED devices is very harmful to the retina after entering the human eye. The peak wavelength of blue light emitted by the blue light chip of the present application is outside the harmful blue light wavelength range of 400nm to 450nm, so the content of harmful blue light is reduced to 5%, thereby fundamentally avoiding damage to human eyes caused by harmful blue light with a wavelength of 400nm to 450nm.

[0038] Furthermore, the inventors found that the blue light emitted by the blue chip of the present application has a long wavelength and low energy, resulting in low conversion efficiency of exciting the phosphor to emit light, and there is also a small amount of short-wavelength harmful blue light. Therefore, the inventors further studied the materials of the phosphor and used phosphor materials with different components from 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 includes nitrogen oxide and silicate or aluminate, specifically SiAlON:Eu 2+ 、BaSiON2:Eu 2+ 、Ba2SiO4:Eu 2+ Or LuAG. The yellow phosphor and cyan phosphor of the present application can improve the conversion efficiency and absorb harmful blue light, reducing the content of harmful blue light to less than 5%.

[0039] Furthermore, in order to adjust the color temperature and color rendering index and improve the light effect, red phosphor can be added to the yellow phosphor for adjustment. The red phosphor includes nitride and sulfide or fluoride, specifically including 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 combined use of the yellow phosphor and the red phosphor can 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 - 540nm. In particular, the peak wavelength of the blue light emitted by the blue-light chip of this application is 450nm - 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 has lower blue-light 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 luminous 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 luminous 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 mutually 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. A plastic partition 110 is provided between the bowl structures to prevent light crosstalk 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 according to needs, 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 the present application further comprises a solder pad 200, and the solder pad 200 is provided with a corresponding conductively connected pin 220. The chip of the present application is arranged on the solder pad and is electrically connected to the solder pad through a conductive solder or a wire. The solder pad is arranged at the bottom of the cup-bowl structure, and the number of the solder pads is six, and six pins are connected respectively, of which five pins are electrically connected to the A poles of the chips corresponding to the five light-emitting bodies, and one pin is electrically connected to the B poles of the five chips.

[0044] The front sides of the pads are exposed in the cup structures to form functional parts, which are used to place LED chips or to bond wires. The first cup structure 101 includes five functional parts, the second cup structure 102 and the third cup structure 103 each include two functional parts, the two functional parts in the first cup structure 101 are electrically connected to one functional part of the second cup structure 102 and the third cup structure 103, respectively, and the remaining functional parts in the cup structures are insulated from each other.

[0045] More specifically, the six pads are respectively 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 is connected to the first cup-shaped structure 101 to form electrically connected functional parts 201a and 201b, and to form electrically connected functional parts 201c and 201d in the second cup-shaped structure 102 and the third cup-shaped structure 103, respectively; the first B-pole pad 202, the second B-pole pad 203, and the third B-pole pad 204 are connected to the first cup-shaped structure 101 to form electrically connected functional parts 202a, 203a, and 204a in the first cup-shaped structure 101, respectively; the fourth B-pole pad 205 is connected to the second cup-shaped structure 102, and to form an electrically connected functional part 205a in the second cup-shaped structure 102; the fifth B-pole pad 206 is connected to the third cup-shaped structure 103, and to form an electrically connected functional part 206a in the third cup-shaped structure 103.

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

[0047] The blue chip of the first cup-shaped structure 101 is arranged in the functional part 203a, and is connected to the functional parts 201a, 202a, and 203a through leads respectively; the green chip of the first cup-shaped structure 101 is arranged in the functional part 203a, and is connected to the functional parts 201a and 203a through leads respectively; the red chip is arranged in the functional area 201b in a vertical structure, and is only connected to the functional part 204a through leads. The blue chip of the second cup-shaped structure 102 is arranged in the functional part 205a, and is connected to the functional part 201c and the functional part 205a through leads respectively. The blue chip of the third cup-shaped structure 103 is arranged in the functional part 206a, and is connected to the functional part 201d and the functional part 206a through leads respectively.

[0048] The current flowing through the light-emitting body can be individually controlled by individually controlling the pins corresponding to each light-emitting body, thereby controlling and adjusting the light-emitting effect of the LED device. Since the red light-emitting body 10, the green light-emitting body 20, and the blue light-emitting body 30 of this embodiment emit light directly from the chip, the color purity of the red chip, the green chip, and the blue chip is relatively high. Therefore, when a high-saturation display effect is required, only the red light-emitting body 10, the green light-emitting body 20, and the blue light-emitting body 30 can be lit for rendering; when it is necessary to simulate indoor and outdoor lighting scenes, fully restore the color of the illuminated object, and obtain a more realistic picture, the red light-emitting body 10, the green light-emitting body 20, the blue light-emitting body 30, the yellow light-emitting body 40, and the cyan light-emitting body 50 can be lit at the same time for rendering. By controlling the light-emitting state of different light-emitting bodies, the LED device of this embodiment can adapt to the rendering requirements of lighting or display in different scenes.

[0049] In this embodiment, the pads and pins are made of metal, and the chip dissipates heat through the pads and pins, which can improve the heat dissipation efficiency of the bracket 100, avoid damage to the chip due to long-term heating, and thus increase the service life of the LED component. In order to make full use of the space of the cup-bowl structure and improve the heat dissipation efficiency, in this embodiment, the green light emitter 20 and the blue light emitter 30 are arranged on the same pad, and the red light emitter 10, the yellow light emitter 40 and the cyan light emitter 50 are respectively arranged on three pads. In other embodiments, the arrangement of the pads and pins can be adjusted as needed, and is not limited to this embodiment.

[0050] In addition, at least two LED devices in this embodiment may be arranged on a 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 a red light-emitting body 10, a green light-emitting body 20 and a blue light-emitting body 30 arranged on the bracket 100, and the yellow light-emitting body 40 and the cyan light-emitting body 50 are not arranged.

[0053] To further verify the technical effect of the LED device of this application, please refer to Figure 5 The technicians of the present application have drawn the CIE 1931 chromaticity diagram corresponding to Example 1 and Comparative Example 1. The CIE 1931 chromaticity diagram is used to intuitively show the color gamut range and boundaries of the present application and the prior art. The black triangle area in the figure is the color gamut of the LED device of Comparative Example 1, and the quadrilateral area in the figure is the color gamut of the LED device of Example 1, wherein the part of the quadrilateral area minus the black triangle area is the color gamut increased by Example 1 relative to Comparative Example 1. It can be seen from the calculation that the color gamut of the LED device of the present application is increased by 37%.

[0054] Compared with the prior art, the LED device of the present application has increased the two kinds of light that can be emitted, yellow and cyan, and has greatly broadened the color gamut. In addition, the wavelength range of the superposition of multiple primary colors of the LED device of the present application can cover the visible light range from 420nm to 780nm, and can synthesize white light with a continuous spectrum, making the emitted light more real and natural; the white light source has good color rendering, and has a more natural and more realistic color restoration when irradiating the illuminated object; the half-peak width of the yellow light emitter and the cyan light emitter is wide, so that the spectrum of the LED device is evenly distributed, which is closer to the smooth spectrum distribution of natural light, without obvious peak wavelength, and has the characteristics of smaller peaks and valleys, so it can improve the color rendering index and simulate the luminous effect of natural light well. In addition, the peak wavelength of blue light emitted by the blue light chip of the present application is 450nm~475nm, which is outside the wavelength of harmful blue light, greatly reducing the short-wavelength harmful blue light, and can avoid the damage of blue light to the human eye. At the same time, since the light of the yellow light-emitting body and the cyan light-emitting body of the present application is formed by blue light exciting special phosphors, the conversion efficiency of the LED device of the present application is relatively high. The proportion of phosphors can be reasonably adjusted according to different scenes to adjust the color temperature of the emitted light and adapt to the lighting or display rendering requirements of different scenes.

[0055] The above-mentioned embodiments only express several implementation methods of the present invention, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the invention patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, and the present invention is also intended to include these modifications and modifications.

Claims

1. An LED device, characterized in that: It comprises a bracket and a red light emitting body, a green light emitting body, a blue light emitting body, a yellow light emitting body and a cyan light emitting body arranged on the bracket; the bracket is provided with at least two independent bowl-cup structures, the red light emitting body, the green light emitting body, the blue light emitting body, the yellow light emitting body and the cyan light emitting body are arranged in the bowl-cup structures, and plastic partitions are provided between the bowl-cup structures.

2. The LED device according to claim 1, characterized in that: The bracket is provided with three independent bowl-cup structures, the red light emitting body, the green light emitting body and the blue light emitting body are arranged in the first bowl-cup structure, the yellow light emitting body is separately arranged in the second bowl-cup structure, and the cyan light emitting body is separately arranged in the third bowl-cup structure; the red light emitting body is a red light chip, the green light emitting body is a green light chip, the blue light emitting body is a blue light chip, the yellow light emitting body includes a blue light chip emitting blue light with a peak wavelength of 450nm to 475nm and yellow phosphor, and the cyan light emitting body includes a blue light chip emitting blue light with a peak wavelength of 450nm to 475nm and cyan phosphor.

3. The LED device according to claim 1, characterized in that: The peak wavelength of the yellow light emitted by the yellow light emitting body is 540nm-600nm; the peak wavelength of the cyan light emitted by the cyan light emitting body is 470nm-550nm.

4. The LED device according to claim 3, characterized in that: The half-peak width of the yellow light emitted by the yellow luminescent body is 60nm to 120nm; the half-peak width of the cyan light emitted by the cyan luminescent body is 20nm to 80nm.

5. The LED device according to claim 2, characterized in that: The yellow phosphor includes one or more of aluminate, silicate and nitride.

6. The LED device according to claim 5, characterized in that: The yellow phosphor includes Ga-YAG, Sr2SiO4:Eu 2+ 、(BaSr)2SiO4:Eu 2+ 、La3Si6N 11 :Ce 3+ One or more of .

7. The LED device according to claim 2, characterized in that: The cyan phosphor includes one or more of nitrogen oxides, silicates, and aluminates.

8. The LED device according to claim 7, characterized in that: The cyan phosphor includes SiAlON:Eu 2+ 、BaSiON2:Eu 2+ 、Ba2SiO4:Eu 2+ , LuAG or more.

9. The LED device according to claim 4, characterized in that: The yellow light emitting body further includes red phosphor, and the red phosphor includes one or more of nitride, sulfide and fluoride.

10. The LED device according to claim 9, 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 .

11. The LED device according to claim 2, characterized in that: The bracket includes a solder pad and a pin conductively connected to the solder pad. The red light chip, the green light chip and the blue light chip are respectively arranged on the solder pads. The solder pads are arranged at the bottom of the cup-bowl structure. There are six solder pads, which are respectively connected to six pins, five of which are respectively electrically connected to the B poles of the chips corresponding to the red light emitting body, the green light emitting body, the blue light emitting body, the yellow light emitting body and the cyan light emitting body, and one pin is electrically connected to the A poles of the five chips.

12. The LED device according to claim 11, characterized in that: The front sides of the solder pads are exposed in the bowl-cup structures to form functional parts. The first bowl-cup structure includes five functional parts. The second bowl-cup structure and the third bowl-cup structure each include two functional parts. The two functional parts in the first bowl-cup structure are electrically connected to one functional part in the second bowl-cup structure and the third bowl-cup structure, respectively. The remaining functional parts in the bowl-cup structure are insulated from each other.

13. A display module, characterized in that: The LED device comprises at least two LED devices according to any one of claims 1 to 12, wherein the LED devices are arranged on a substrate.

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