CN217214711U - Light emitting device - Google Patents
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- CN217214711U CN217214711U CN202122919930.5U CN202122919930U CN217214711U CN 217214711 U CN217214711 U CN 217214711U CN 202122919930 U CN202122919930 U CN 202122919930U CN 217214711 U CN217214711 U CN 217214711U
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Abstract
The utility model provides a light-emitting device. The light-emitting device comprises at least three light-emitting components arranged side by side. The at least three light-emitting components comprise two outer side light-emitting components arranged on the outer side and at least one inner side light-emitting component arranged on the inner side of the two outer side light-emitting components. One of the two outer light-emitting components comprises a first light-tight colloid and a first light-emitting chip, and the first light-tight colloid surrounds the first light-emitting chip. The height of one end of the first light-tight colloid close to the inner side light-emitting component is lower than that of the other end far away from the inner side light-emitting component.
Description
Technical Field
The utility model relates to a light emitting device especially relates to a promote light emitting device of luminance.
Background
With the development of light-emitting diode (LED) technology, LEDs have been widely used in lighting devices for daily life. Although the luminous efficiency of LED is far higher than that of traditional incandescent lamp and halogen bulb, the development of LED technology is still focused on improving the brightness and luminous efficiency, so as to expand its application field and reduce the production cost. However, increasing the driving current to increase the brightness of the LED tends to increase the heat generated by the LED, which requires more heat dissipation components and also leads to higher cost. Therefore, it is an important subject to be solved by the industry to improve the structure of the LED in a limited space to improve the luminance and the light emitting efficiency of the LED.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a not enough to prior art provides a light-emitting device.
In order to solve the above technical problem, one of the technical solutions of the present invention is to provide a light emitting device including at least three light emitting elements arranged side by side. The at least three light-emitting components comprise two outer side light-emitting components arranged on the outer side and at least one inner side light-emitting component arranged on the inner side of the two outer side light-emitting components. At least two of the at least three light emitting components have different emission peak wavelengths. One of the two outer light-emitting components comprises a first light-tight colloid and a first light-emitting chip, and the first light-tight colloid surrounds the first light-emitting chip. The height of one end of the first light-tight colloid close to the inner side light-emitting component is lower than that of the other end far away from the inner side light-emitting component.
According to one embodiment of the present invention, the outer light-emitting assembly further includes a first retaining wall structure, one side of the first retaining wall structure is adjacent to the first opaque colloid, the other side of the first retaining wall structure is adjacent to the at least one inner light-emitting assembly, and the height of the first retaining wall structure is less than the height of the first light-emitting chip.
According to one embodiment of the present invention, the ratio of the height of the first retaining wall structure to the height of the first light emitting chip is between 0.4 and 0.9.
According to one embodiment of the present invention, the other of the two outer light-emitting elements includes a second light-proof colloid and a second light-emitting chip, and the second light-proof colloid surrounds the second light-emitting chip; wherein, the height of one end of the second light-tight colloid close to the at least one inner side luminous component is lower than that of the other end far away from the at least one inner side luminous component.
According to one embodiment of the present invention, the second opaque encapsulant has an inclination angle from a lowest point of the second light emitting chip to a highest point of the other end of the at least one inner side light emitting device, and the inclination angle is between 15 ° and 25 °.
According to one embodiment of the present invention, the other of the two outer light emitting elements further includes a second wall structure, one side of the second wall structure is adjacent to the second opaque glue, the other side of the second wall structure is adjacent to the at least one inner light emitting element, and the height of the second wall structure is greater than the height of the second light emitting chip.
According to the present invention, the height ratio of the second retaining wall structure to the second light emitting chip is between 1.1 and 1.7.
According to one embodiment of the present invention, the first opaque encapsulant has an inclination angle from a lowest point adjacent to the first light emitting chip to a highest point of the other end away from the at least one inner side light emitting element, and the inclination angle is between 15 ° and 25 °.
According to one embodiment of the present invention, the first opaque glue is formed of white glue, and the viscosity of the white glue is 3-8Pa · s.
According to one embodiment of the present invention, one of the two outer light-emitting elements further includes a phosphor gel, and the phosphor gel covers the first light-emitting chip and the first light-proof gel.
According to one embodiment of the present invention, the material of the fluorescent colloid includes nitride, yttrium aluminum garnet, or a combination thereof.
According to one embodiment of the present invention, the at least one inner side light emitting element includes a third light emitting chip, the peak wavelength of the third light emitting chip and the first light emitting chip is between 340nm and 490nm, and the peak wavelength of the first light emitting element 31 is between 585nm and 760 nm.
According to one embodiment of the present invention, the light emitting device further includes a housing and a package, the at least three light emitting elements are disposed in the accommodating space defined by the housing, and the package fills the accommodating space defined by the housing and covers the top surface and the side of the at least one inner side light emitting element.
According to one embodiment of the present invention, the wavelength of the light emitting peak of the outer light emitting element having the first opaque colloid is greater than the wavelength of the light emitting peak of the at least one inner light emitting element.
One of the benefits of the present invention is that the light emitting device provided by the present invention can include a first light-proof colloid and a first light emitting chip through "one of the two outer light emitting components includes the first light-proof colloid, and the first light-proof colloid surrounds the first light emitting chip; the height of one end of the first light-tight colloid, which is close to the inner side light-emitting component, is lower than the height of one end of the first light-tight colloid, which is far away from the inner side light-emitting component, and the height of one of the two outer side light-emitting components also comprises a first retaining wall structure, one side of the first retaining wall structure is adjacent to the first light-tight colloid, the other side is adjacent to the inner side light-emitting component, and the height of the first retaining wall structure is smaller than the height of the first light-emitting chip.
For a further understanding of the nature and technical content of the present invention, reference should be made to the following detailed description and accompanying drawings, which are provided for reference and illustration purposes only and are not intended to limit the invention.
Drawings
Fig. 1 is a schematic perspective view of a light emitting device according to a first embodiment of the present invention.
Fig. 2 is a top view of a light emitting device according to a first embodiment of the present invention.
Fig. 3 is a sectional view of a light emitting device according to a first embodiment of the present invention.
Fig. 4 is a perspective view of a light emitting device according to a second embodiment of the present invention.
Fig. 5 is a plan view of a light emitting device according to a second embodiment of the present invention.
Fig. 6 is a sectional view of a light emitting device according to a second embodiment of the present invention.
Fig. 7 is a schematic perspective view of a light-emitting device according to a third embodiment of the present invention.
Fig. 8 is a plan view of a light emitting device according to a third embodiment of the present invention.
Fig. 9 is a sectional view of a light-emitting device according to a third embodiment of the present invention.
Detailed Description
The following is a description of the embodiments of the present invention disclosed in the "light emitting device" with reference to specific embodiments, and those skilled in the art can understand the advantages and effects of the present invention from the disclosure of the present invention. The utility model discloses the concrete embodiment of accessible other differences is carried out or is used, and each item detail in this specification also can be based on different viewpoints and application, does not deviate from the utility model discloses a do all kinds of modifications and changes under the design. The drawings of the present invention are merely schematic illustrations, and are not drawn to scale, but are described in advance. The following embodiments will further explain the related art of the present invention in detail, but the disclosure is not intended to limit the scope of the present invention. In addition, the term "or" as used herein should be taken to include any one or combination of more of the associated listed items as the case may be.
First embodiment
Referring to fig. 1 to 3, fig. 1 is a schematic perspective view of a light emitting device according to a first embodiment of the present invention, fig. 2 is a plan view of the light emitting device according to the first embodiment of the present invention, and fig. 3 is a cross-sectional view of the light emitting device according to the first embodiment of the present invention. The first embodiment of the present invention provides a light emitting device, in which a carrier 2 is disposed inside a casing 1, and at least three light emitting elements 31,32, and 33 are disposed on the carrier 2 side by side. The material, shape and size of the housing 1 are not limited, and can be adjusted and designed according to the internal structure or practical application. The carrier 2 may be a metal substrate, a ceramic substrate or a metal lead frame, and the present invention is not limited thereto. In addition, as shown in fig. 1, the light emitting device further includes a light-transmitting package 4, which fills the accommodating space defined by the housing 1 and covers the three light emitting components 31,32, and 33, and the material of the package 4 can be selected and set according to the conventional technology, which is not limited by the present invention.
In the present embodiment, the light emitting device includes three light emitting elements, i.e., a first light emitting element 31, a second light emitting element 32 and a third light emitting element 33. The first light emitting elements 31, the second light emitting elements 32 and the third light emitting elements 33 are linearly arranged on the carrier 2, and at least a portion of the side surfaces of two adjacent light emitting elements correspond to each other. The spacing between the light emitting components can be the same or different, and can be adjusted and designed according to the requirements of users or practical application. In addition, the first light emitting element 31 and the second light emitting element 32 are respectively disposed on two opposite sides of the third light emitting element 33, such that the third light emitting element 33 is disposed on the inner side of the first light emitting element 31 and the second light emitting element 32, that is, the first light emitting element 31 and the second light emitting element 32 are light emitting elements with light emitting devices disposed on the outer side, and the third light emitting element 33 is a light emitting element with light emitting devices disposed on the inner side.
The first light emitting element 31, the second light emitting element 32 and the third light emitting element 33 respectively include the same or different light emitting chips (LED chips), so that the first light emitting element 31, the second light emitting element 32 and the third light emitting element 33 respectively have the same or different light emitting peak wavelengths. In the present embodiment, the peak wavelength of the light emitted by the first light emitting element 31 is between 600nm and 760nm, preferably between 610nm and 750 nm. The peak wavelength of the light emitted by the second light-emitting element 32 is between 490nm and 580nm, preferably between 500nm and 560 nm. The peak wavelength of the light emitted from the third light-emitting element 33 is between 380nm and 490nm, preferably between 440nm and 480 nm. That is, the emission peak wavelength of the first light emitting element 31 is greater than the emission peak wavelength of the second light emitting element 32, and the emission peak wavelength of the second light emitting element 32 is greater than the emission peak wavelength of the third light emitting element 33. In other words, the light emission peak wavelength of the inner light emitting element 33 is smaller than that of the outer two outer light emitting elements 31, 32. For example, the first light emitting element 31 emits red light, the second light emitting element 32 emits green light, and the third light emitting element 33 emits blue light. By adjusting the driving conditions (e.g., the magnitude of the driving current) of the light emitting elements, the different color light beams emitted by the first light emitting element 31, the second light emitting element 32, and the third light emitting element 33 are uniformly mixed to generate the desired colored light or white light.
In the present embodiment, the first light emitting device 31 includes a first light emitting chip 311 and a first opaque encapsulant 312, the second light emitting device 32 is a second light emitting chip, and the third light emitting device 33 is a third light emitting chip. In addition, as mentioned above, the first light emitting chip 311, the second light emitting chip and the third light emitting chip may be a red LED chip, a green LED chip and a blue LED chip, respectively. The first light-tight colloid 312 only surrounds a portion of the side surface of the first light-emitting chip 311, and the package 4 subsequently covers the remaining exposed portion of the first light-emitting chip 311, the top surfaces and the side surfaces of the second light-emitting chip and the third light-emitting chip.
The first opaque colloid 312 is preferably made of white glue, and the viscosity of the white glue is 3-8Pa · s, but the material used is not limited as long as the first opaque colloid 312 has the function of light reflection and can meet the practical application.
Further, as shown in fig. 1 and 3, the height of one end of the first light-tight colloid 312 close to the third light-emitting element 33 is lower than that of the other end far from the third light-emitting element 33. In other words, the first light-tight colloid 312 has a highest point and a lowest point, the highest point is adjacent to the housing 1 and far away from the third light-emitting element 33, wherein the height of the highest point is higher than the height of the first light-emitting chip 311 and is equal to or less than the height of the housing 1; the lowest point is located at an end adjacent to the first light emitting chip 311 but far from the third light emitting assembly 33, wherein the height of the lowest point is lower than that of the first light emitting chip 311. In addition, as shown in fig. 3, the direction from the lowest point to the highest point of the first opaque colloid 312 has an inclination angle θ 1, and the inclination angle θ 1 is between 15 ° and 25 °. Therefore, the first light-tight colloid 312 surrounds the first light-emitting chip 311, so that the brightness of the light (i.e., red light) emitted by the first light-emitting element 31 can be improved, and the color contrast can also be increased.
In addition, the first light emitting element 31 may further include a first wall structure 313, one side of the first wall structure 313 is adjacent to the first opaque encapsulant 312, and the other side is adjacent to the third light emitting element 33. That is to say, the first retaining wall structure 313 is disposed between the first light emitting chip 311 and the third light emitting chip, and the distance between the first retaining wall structure 313 and the first light emitting chip 311 and the third light emitting chip can be adjusted according to practical applications, for example, the distance ratio between the first retaining wall structure 313 and the first light emitting chip 311 and the third light emitting chip can be 0.5:1 to 3:1, but the present invention is not limited thereto. In addition, as shown in fig. 3, the first light-tight colloid 312 has a relatively high point and a relatively low point between the first retaining wall structure 313 and the first light-emitting chip 311, the relatively high point is adjacent to the first retaining wall structure 313, and the relatively low point is adjacent to the first light-emitting chip 311. More specifically, the relative low point has an inclination angle θ 2 toward the relative high point, and the inclination angle θ 2 is between 5 ° and 15 °. When the carrier 2 is a leadframe, the first retaining wall structure 313 is disposed between two supports, and can be formed by dispensing or molding with the housing 1 at the same time, wherein one support is a die bonding support of the first light emitting chip 311, and the other support is a wire support of the third light emitting chip. The first retaining wall structure 313 may be preferably formed of silicone (silicone), and the viscosity of the silicone is 50000-. Further, as shown in fig. 3, the height of the first retaining wall structure 313 is less than the height of the first light emitting chip 311, and the ratio of the height of the first retaining wall structure 313 to the height of the first light emitting chip 311 is between 0.4 and 0.9. For example, when the height of the first light emitting chip 311 is 225 μm, the height of the first retaining wall structure 313 is between 100 μm and 200 μm. Therefore, the light emitted from the first light emitting element 31 can be more effectively guided to the center of the light emitting device, so that the light can be uniformly mixed with the different color light beams emitted from the second light emitting element 32 and the third light emitting element 33.
In the light emitting device of the first embodiment, by the above technical solution, in addition to improving the brightness of the light (i.e., red light) emitted by the first light emitting element 31 and increasing the color contrast, the different color light rays emitted by the first light emitting element 31, the second light emitting element 32 and the third light emitting element 33 can be further uniformly mixed to adjust the color temperature (e.g., adjust the color temperature to 2000K to 3300K, i.e., warm light).
Second embodiment
Referring to fig. 4 to 6, fig. 4 is a schematic perspective view of a light emitting device according to a second embodiment of the present invention, fig. 5 is a plan view of the light emitting device according to the second embodiment of the present invention, and fig. 6 is a cross-sectional view of the light emitting device according to the second embodiment of the present invention. The second embodiment is different from the first embodiment mainly in that the first light-emitting element of the light-emitting device of the second embodiment further includes a fluorescent colloid. It should be noted that other structures of the light emitting device of the second embodiment are similar to those of the first embodiment, and are not described herein again.
In the present embodiment, the first light emitting element 31 includes a first light emitting chip 311, a first opaque adhesive 312, a first barrier structure 313 and a fluorescent adhesive 314, the second light emitting element 32 is a second light emitting chip, and the third light emitting element 33 is a third light emitting chip. As shown in fig. 4 to 6, the fluorescent colloid 314 covers the first light emitting chip 311 and the first opaque colloid 312. The package 4 covers the fluorescent colloid 314, the top surfaces and the side surfaces of the second light emitting chip and the third light emitting chip. Further, in the definitionWhen the first light emitting element 31 emits red light, the first light emitting chip 312 may be a blue or violet LED chip, and the blue and violet light emitted from the first light emitting chip 311 can be wavelength-converted by the fluorescent colloid 314 to make the light emitted from the first light emitting element 31 be red light. In the present embodiment, the light emitting peak wavelength of the first light emitting chip 311 is between 340nm and 490nm, preferably between 440nm and 480 nm. The phosphor in the phosphor gel 314 may be Nitride (Nitride), which may be a Nitride containing Ca of the formula 2 AlSiN 3 :Eu 2+ Or Ca 2 Si 5 N 8 :Eu 2+ The europium-activated alkaline earth silicon nitride-based phosphor (CASN) of the present invention has an emission peak wavelength of 615nm to 740nm, for example, the emission peak wavelength of CASN is 615nm to 650nm, but the present invention is not limited thereto. In addition, the phosphor may also be a mixture of nitride and Yttrium Aluminum Garnet (YAG), for example, but not limited to, a mixture of CASN and YAG at a weight ratio of 7:1 to 9:1, such that the phosphor has a peak wavelength of 585nm to 595nm when combined with the first light emitting chip 311 (i.e., a fluorescence-converted amber, PC amber). More specifically, the phosphor 314 may include 45% to 60% of phosphor based on 100 wt% of the phosphor 314, such that the peak wavelength of the light emitted from the first light emitting element 31 is 585nm to 760 nm. However, the present invention is not limited to the above examples, and those skilled in the art can adjust the light emitting color and the implementation of the light emitting assembly according to practical applications and requirements.
Third embodiment
Referring to fig. 7 to 9, fig. 7 is a schematic perspective view of a light emitting device according to a second embodiment of the present invention, fig. 8 is a plan view of the light emitting device according to the second embodiment of the present invention, and fig. 9 is a cross-sectional view of the light emitting device according to the second embodiment of the present invention. The third embodiment is different from the first embodiment in that the second light emitting element of the light emitting device of the third embodiment further includes a second light-impermeable gel. It should be noted that other structures of the light emitting device of the third embodiment are similar to those of the first embodiment, and are not described herein again.
In the present embodiment, the first light emitting element 31 includes a first light emitting chip 311, a first opaque colloid 312 and a first dam structure 313, the second light emitting element 32 includes a second light emitting chip 321 and a second opaque colloid 322, and the third light emitting element 33 is a third light emitting chip. The first light-tight colloid 312 and the second light-tight colloid 322 respectively surround the first light-emitting chip 311 and the second light-emitting chip 321, and the package 4 covers the exposed portions of the first light-emitting chip 311 and the second light-emitting chip 321 and the top and side peripheries of the third light-emitting chip. The first opaque colloid 312 and the second opaque colloid 322 may be made of the same or different materials, as long as the materials used can make the first opaque colloid 312 and the second opaque colloid 322 have the light reflection function and can meet the practical application, which is not limited by the present invention. In the present embodiment, the first opaque colloid 312 and the second opaque colloid 322 are both made of white glue, and the viscosity of the white glue is 3-8Pa · s.
Further, as shown in fig. 7 and 9, the height of one end of the second light-impermeable colloid 322 close to the third light-emitting component 33 is lower than the height of the other end far from the third light-emitting component 33. In other words, the second light-tight colloid 322 has a highest point and a lowest point, the highest point is adjacent to the housing 1 and far away from the third light-emitting element 33, and the height of the highest point is higher than that of the second light-emitting chip 321; the lowest point has a height lower than that of the second light emitting chip 321, and is located at an end adjacent to the second light emitting chip 321 but far away from the third light emitting assembly 33. In addition, the direction from the lowest point to the highest point of the second opaque colloid 322 has an inclination angle θ 3, and the inclination angle θ 3 is between 15 ° and 25 °. Therefore, the second light-proof colloid 322 surrounds the second light-emitting chip 321, so that the brightness of the light (i.e., green light) emitted by the second light-emitting element 32 can be improved, and the color contrast can also be increased.
In addition, the second light emitting device 32 may further include a second barrier wall structure 323, wherein one side of the second barrier wall structure 323 is adjacent to the second light-proof colloid 322, and the other side is adjacent to the third light emitting device 33. That is to say, the second barrier wall structure 323 is disposed between the second light emitting chip 321 and the third light emitting chip, and the distance between the second barrier wall structure 323 and the second light emitting chip 321 and the third light emitting chip can be adjusted according to practical applications, for example, the distance ratio between the second barrier wall structure 323 and the second light emitting chip 321 and the third light emitting chip can be 0.5:1 to 3:1, but the present invention is not limited thereto. In addition, as shown in fig. 9, when the carrier 2 is a lead frame, the first retaining wall structure 313 and the second retaining wall structure 323 are respectively disposed between two adjacent brackets, and can be formed by dispensing, wherein one bracket is a die bonding bracket or a lead bracket of the first light emitting chip 111 or the second light emitting chip 321 of the outer light emitting devices 31 and 32, and the other bracket is a die bonding bracket or a lead bracket of the third light emitting chip 331 of the inner light emitting device 33. In addition, the second retaining wall 323 and the first retaining wall 313 may be formed by the same or different materials. In the embodiment, the second barrier wall structure 323 and the first barrier wall structure 313 are formed of the same material, that is, the second barrier wall structure 323 is formed of silica gel, and the viscosity of the silica gel is 50000-. Further, as shown in fig. 9, the height of the second barrier wall structure 323 is higher than the height of the second light emitting chip 321, and the ratio of the height of the second barrier wall structure 323 to the height of the second light emitting chip 321 is between 1.1 and 1.7. For example, when the height of the second light emitting chip 321 is 130 μm, the height of the second barrier structure 323 is between 150 μm and 220 μm. In addition, as described in the first embodiment, when the height of the first light emitting chip 311 is 225 μm, the height of the first retaining wall structure 313 is between 100 μm and 200 μm. Therefore, the ratio of the height of the first retaining wall structure 313 to the height of the second retaining wall structure 323 is between 0.45 and 1.33. Therefore, the light emitted by the first light emitting element 31, the second light emitting element 32 and the third light emitting element 33 can be uniformly mixed.
Therefore, the light emitting device of the present embodiment can drive the first light emitting chip 311 and the second light emitting chip 321 with a lower driving current, which can achieve the same light color as that when the first light-proof colloid 312 and the second light-proof colloid 322 are not disposed, thereby achieving the effect of reducing power. In addition, since the driving currents of the first light emitting chip 311, the second light emitting chip 321, and the third light emitting chip can be relatively close to each other, the precision of controlling the driving currents can be reduced.
Advantageous effects of the embodiments
One of the benefits of the present invention is that the light emitting device provided by the present invention can include a first light-proof colloid and a first light emitting chip through "one of the two outer light emitting components includes the first light-proof colloid, and the first light-proof colloid surrounds the first light emitting chip; the height that the one end that first light-tight colloid is close to inboard light-emitting component is low than the height of the one end of keeping away from inboard light-emitting component "and" one of them outside light-emitting component of two outside light-emitting components still includes first barricade structure, first light-tight colloid of the adjacent first of one side of first barricade structure, this inboard light-emitting component of opposite side adjacent, and the height that highly is less than first light-emitting chip of this first barricade structure, except can promoting the luminance of the light that light-emitting component sent, still can increase illuminator color contrast and make the light type more concentrated, and the different look light that at least three light-emitting component sent can further the homogeneous mixing and make it carry out the colour temperature adjustment.
Further, the light emitting device provided by the utility model can pass through that "the other outer light emitting component of the two outer light emitting components comprises a second light-tight colloid and a second light emitting chip, and the second light-tight colloid surrounds the second light emitting chip; the height of one end of the second light-tight colloid close to the inner side light-emitting component is lower than that of the other end far away from the inner side light-emitting component, and the height of the other outer side light-emitting component of the two outer side light-emitting components is lower.
The above disclosure is only a preferred and practical embodiment of the present invention, and is not intended to limit the scope of the claims, so that all the modifications of the equivalent technology made by the disclosure and the attached drawings are included in the scope of the claims.
Claims (13)
1. A light-emitting device is characterized by comprising at least three light-emitting components arranged side by side, wherein the at least three light-emitting components comprise two outer light-emitting components arranged on the outer side and at least one inner light-emitting component arranged on the inner side of the two outer light-emitting components; wherein, one of the two outer light-emitting components comprises a first light-tight colloid and a first light-emitting chip, and the first light-tight colloid surrounds the first light-emitting chip; wherein, the height of one end of the first light-tight colloid close to the inner side light-emitting component is lower than that of the other end far away from the inner side light-emitting component.
2. The light-emitting device as claimed in claim 1, wherein one of the two outer light-emitting elements further includes a first dam structure, one side of the first dam structure is adjacent to the first light-proof encapsulant, the other side of the first dam structure is adjacent to the at least one inner light-emitting element, and the height of the first dam structure is smaller than the height of the first light-emitting chip.
3. The light-emitting device according to claim 2, wherein a ratio of a height of the first dam structure to a height of the first light-emitting chip is between 0.4 and 0.9.
4. The light-emitting device according to claim 1, wherein the other of the two outer light-emitting elements comprises a second light-impermeable gel and a second light-emitting chip, and the second light-impermeable gel surrounds the second light-emitting chip; wherein, the height of one end of the second light-tight colloid close to the at least one inner side luminous component is lower than that of the other end far away from the at least one inner side luminous component.
5. The light-emitting device according to claim 4, wherein the second light-impermeable sealant has an inclination angle from a lowest point adjacent to the second light-emitting chip to a highest point away from the other end of the at least one inner light-emitting element, and the inclination angle is between 15 ° and 25 °.
6. The light-emitting device according to claim 4, wherein the other of the two outer light-emitting elements further comprises a second barrier structure, one side of the second barrier structure is adjacent to the second light-impermeable gel, the other side of the second barrier structure is adjacent to the at least one inner light-emitting element, and the height of the second barrier structure is greater than the height of the second light-emitting chip.
7. The light-emitting device according to claim 6, wherein a ratio of a height of the second barrier structure to a height of the second light-emitting chip is between 1.1 and 1.7.
8. The light-emitting device according to any one of claims 1-7, wherein the first light-impermeable gel has an inclination angle from a lowest point adjacent to the first light-emitting chip to a highest point at another end away from the at least one inner light-emitting element, and the inclination angle is between 15 ° and 25 °.
9. The light-emitting device according to any one of claims 1-7, wherein the first light-impermeable gel is formed of white glue, and the viscosity of the white glue is 3-8 Pa-s.
10. The light-emitting device according to any one of claims 1-7, wherein one of the two outer light-emitting elements further comprises a fluorescent glue, and the fluorescent glue encapsulates the first light-emitting chip and the first light-tight glue.
11. The light-emitting device according to claim 10, wherein the at least one inner light-emitting element comprises a third light-emitting chip, the peak wavelengths of the light emission of the third light-emitting chip and the first light-emitting chip are between 340nm and 490nm, and the peak wavelength of the light emission of the outer light-emitting element comprising one of the fluorescent colloids is between 585nm and 760 nm.
12. The light-emitting device according to any one of claims 1-7, further comprising a housing, and a package, wherein the at least three light-emitting elements are disposed in the receiving space defined by the housing, and the package fills the receiving space defined by the housing and covers the top surface and the side of the at least one inner light-emitting element.
13. The light-emitting device according to any one of claims 1-7, wherein the outer light-emitting elements with the first light-tight encapsulant have a peak wavelength of light emission that is greater than a peak wavelength of light emission of the at least one inner light-emitting element.
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| Application Number | Priority Date | Filing Date | Title |
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| DE202021003924.4U DE202021003924U1 (en) | 2021-03-12 | 2021-12-29 | lighting device |
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| US202163159994P | 2021-03-12 | 2021-03-12 | |
| US63/159,994 | 2021-03-12 |
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| CN202123276491.7U Active CN217009189U (en) | 2021-03-12 | 2021-12-23 | Light-emitting device and light-emitting key device |
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