CN114420825B - Special-shaped COB light source and optical device comprising same - Google Patents
Special-shaped COB light source and optical device comprising same Download PDFInfo
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- CN114420825B CN114420825B CN202111551891.6A CN202111551891A CN114420825B CN 114420825 B CN114420825 B CN 114420825B CN 202111551891 A CN202111551891 A CN 202111551891A CN 114420825 B CN114420825 B CN 114420825B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/52—Encapsulations
- H01L33/54—Encapsulations having a particular shape
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L25/00—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
- H01L25/03—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes
- H01L25/04—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers
- H01L25/075—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L33/00
- H01L25/0753—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L33/00 the devices being arranged next to each other
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/58—Optical field-shaping elements
Abstract
The invention relates to a special-shaped COB light source and an optical device comprising the same, wherein the special-shaped COB light source comprises a COB light source substrate, a plurality of COB light source chips distributed on the COB light source substrate, and a COB light source packaging adhesive layer which is arranged on the front surface of the COB light source substrate and covers the COB light source chips; the COB light source packaging adhesive layer is distributed with a plurality of protruding structures. According to the invention, the light distribution of the light source is more flexible and changeable through the COB packaging surface shape conversion and the light emitting chip arrangement mode conversion, so that different light distribution can be realized by matching multiple COB light source forms with a single lens.
Description
Technical Field
The invention belongs to the technical field of lighting lamps and relates to a special-shaped COB light source and an optical device comprising the light source.
Background
The LED light source has the advantages of low power consumption, high luminous efficiency, long service life, environmental protection, energy saving, small volume, light weight, high reliability and the like, and becomes a main stream light source for illumination, thus having great market potential. The light source used by the high-power lamp mainly has two forms, wherein one adopts a discrete light source combination form, and the other adopts a single COB light source. Compared with a discrete light source, the light source has the advantages that the light of the overall secondary light distribution design of the single COB light source is concentrated, the light emitting uniformity is higher, and the problem of light and shadow blurring of the traditional discrete multi-LED integrated lamp can be solved.
COB light source encapsulation is mostly plane encapsulation, and inside chip is evenly arranged, and the encapsulation face is mostly circular, square or rectangular shape, adopts the lens to carry out secondary grading, and current light source changes and changes the grading form limited. Flexible variation of light distribution, precise control, and improvement of utilization efficiency and reduction of light loss are consistent targets.
Disclosure of Invention
The invention aims to provide a special-shaped COB light source and an optical device comprising the light source.
In order to solve the above problems, a special-shaped COB light source of the present invention includes a COB light source substrate, a plurality of COB light source chips distributed on the COB light source substrate, and a COB light source encapsulation adhesive layer on the front surface of the COB light source substrate and covering the COB light source chips; the COB light source packaging adhesive layer is distributed with a plurality of protruding structures.
The COB light source substrate packaging surface is transversely divided into a plurality of areas, and the COB light source chips in each area are different in distribution density.
The COB light source substrate is rectangular, the packaging surface of the COB light source substrate comprises a left area, a middle area and a right area, the left area and the right area are 1/4 circular areas, and the middle area is a rectangular area; the distribution density of COB light source chips in three areas from left to right is from low to high; the COB light source packaging adhesive layer corresponding to the middle area is provided with a convex matrix formed by a plurality of bulges; the COB light source packaging adhesive layer positions corresponding to the left area and the right area are respectively provided with a bulge, and the maximum height of the bulges corresponding to the left area and the right area is larger than that of the bulges corresponding to the middle area.
The COB light source substrate packaging surface is transversely divided into a plurality of areas, and the COB light source chips in each area are identical in distribution density.
The COB light source substrate is rectangular, and the packaging surface on the COB light source substrate comprises a left area, two middle rectangular areas and a right area, wherein the left area and the right area are 1/4 circular areas; the COB light source chips in each area are identical in distribution density; the COB light source packaging adhesive layer corresponding to each area is provided with 1 bulge, and the maximum height of the bulges corresponding to the left area and the right area is smaller than that of the bulges corresponding to the middle two rectangular areas.
The COB light source substrate packaging surface is longitudinally divided into a plurality of areas, and the distribution density of COB light source chips in each area is the same.
The COB light source substrate packaging surface is longitudinally divided into a plurality of areas, and the COB light source chips in each area are different in distribution density.
The COB light source substrate is square, and the packaging surface of the COB light source substrate comprises a semicircular upper area and a semicircular lower area; the COB light source chip distribution density of the upper area is lower than that of the lower area; the COB light source packaging adhesive layer positions corresponding to the upper area and the lower area are respectively provided with 1 bulge, and the bulge corresponding to the upper area is higher than the bulge corresponding to the lower area.
The COB light source substrate is square, and the packaging surface on the COB light source substrate comprises an upper region, a middle region and a lower region, wherein the area of the three regions is changed from small to large; each region comprises a left rectangular region and a right rectangular region; the COB light source chip distribution density of the upper area and the COB light source chip distribution density of the middle area are the same and are larger than that of the COB light source chip distribution density of the lower area; the COB light source packaging adhesive layer corresponding to each rectangular area is provided with 1 protrusion, and the heights of the protrusions of the rectangular areas are the same.
The invention also claims an optical device comprising the special-shaped COB light source, and the device further comprises a lens covered on the special-shaped COB light source.
The beneficial effects are that:
based on the characteristics of energy conservation and high reliability of the LED light source, the array is formed by utilizing a plurality of LED single light-emitting chips, the COB packaging surface shape is changed, and the light-emitting chips are arranged in a mode and the convex shape of the packaging structure is changed, so that the light distribution of the light source is more flexible and changeable. The COB special-shaped light source packaged by the array structure has more light distribution selectivity with the lens, so that different light distribution can be realized by matching multiple COB light source forms with a single lens, and the traditional single light source is matched with multiple lenses to realize the conversion of different light distribution to multiple light sources and multiple lenses. The light control capability of the optical system can be effectively improved by controlling the primary light distribution of the light source.
The COB special-shaped light source adopts the area-division array bulge packaging structure, and the packaging surface is different from the traditional regular shape, so that the light distribution of the light source is more flexible and changeable, the light control is more accurate, under the condition that the packaging area of the light source is consistent, compared with the traditional circular packaging surface, the COB special-shaped light source is packaged in a plane without division, the equivalent light distribution curve is realized, the size of a lens can be reduced, the materials used by the lens are reduced, the cost is reduced, and the luminous efficiency of an optical system is improved.
Drawings
Fig. 1 is a front view of a shaped COB light source of embodiment 1 of the invention.
Fig. 2 is a bottom view of fig. 1.
Fig. 3 is a left side view of fig. 1.
Fig. 4a, 4b and 4c are front, right and bottom views, respectively, of the first lens used in embodiment 1. Fig. 4d and 4e are the light distribution curves of the special-shaped COB light source of example 1 and the light distribution curve of the first lens-configuration optical device of example 1, respectively. Fig. 4f is a front view of the optical device of example 1 with the first lens configuration, and fig. 4g is a left side view of fig. 4 f. Fig. 4h is a light distribution curve of the optical device of example 1 configured to match the first lens rotation of 180 °.
Fig. 5a, 5b and 5c are front, right and bottom views, respectively, of a second lens used in embodiment 1. Fig. 5d example 1 matches the light distribution curve of the second lens-forming optical device.
Fig. 6a, 6b and 6c are front, right and top views, respectively, of a third lens used in embodiment 1. Fig. 6d example 1 matches the light distribution curve of the third lens element optics.
Fig. 7a, 7b and 7c are front view, bottom view and left view, respectively, of the profiled COB light source of embodiment 2 of the invention.
Fig. 7d, 7e and 7f are front, right and top views, respectively, of a first lens used in embodiment 2 of the present invention. Fig. 7g and 7h are the light distribution curves of the special-shaped COB light source of example 2 and the light distribution curves of the first lens configuration optical device of example 2, which are matched with those of fig. 7d, 7e and 7f, respectively.
Fig. 8a, 8b and 8c are front, left and bottom views, respectively, of a second lens used in embodiment 2 of the present invention. Fig. 8d is a light distribution curve of example 2 matching the second lens configuration optical device shown in fig. 8a, 8b, 8 c.
Fig. 9a, 9b and 9c are front view, right view and top view, respectively, of a third lens used in embodiment 2 of the present invention. Fig. 9d is a light distribution curve of example 2 matching the third lens configuration optical device shown in fig. 9a, 9b, and 9 c.
Fig. 10a, 10b and 10c are front view, bottom view and right view, respectively, of the profiled COB light source of embodiment 3 of the invention.
Fig. 10d and 10e are the light distribution curves of the special-shaped COB light source of example 3 of the present invention, and the light distribution curves of the first lens-configuration optical device of example 3, which are matched with those of fig. 8a, 8b and 8c, respectively.
Fig. 11 is a light distribution curve matching the second lens configuration optical device shown in fig. 4a, 4b, and 4c according to embodiment 3 of the present invention.
Fig. 12a, 12b and 12c are front view, bottom view and left view, respectively, of the shaped COB light source of embodiment 4 of the invention. Fig. 12d and 12e are the light distribution curves of the special-shaped COB light source of example 4 of the present invention, and the light distribution curves of the first lens-configuration optical device of example 4, which are matched with those of fig. 6a, 6b and 6c, respectively.
Fig. 13 is a light distribution curve of example 4 of the present invention matching the second lens element configuration optical device shown in fig. 5a, 5b, and 5 c.
Detailed Description
In order to make the technical problems, technical schemes and effects solved by the invention more clear, the invention is further described in detail by combining the drawings and the embodiments. It should be understood that the particular embodiments described herein are examples only and are not to be construed as limiting the invention.
The words used in the present invention such as up, down, left, right, top, bottom, etc. are merely for clarity of description of the positional relationship of the parts, but these words do not limit the scope of the present invention.
Example 1
As shown in fig. 1, 2 and 3, the special-shaped COB light source of the invention comprises a COB light source substrate 11, COB light source chips 12 distributed on the packaging surface of the COB light source substrate, and COB light source packaging adhesive layers which are packaged on the front surface of the COB light source substrate 11 and cover the COB light source chip array; the COB light source substrate 11 is rectangular, and the package surface on the COB light source substrate includes a left region 111, a middle region 112 and a right region 113, wherein the left region 111, the middle region 112 and the right region 113 are respectively a 1/4 circular region, a rectangular region and a 1/4 circular region; the distribution density of COB light source chips 12 in three areas from left to right is from low to high; a plurality of COB light source chips in each area are arranged in rows and columns to form a matrix; the COB light source packaging adhesive layer position corresponding to the middle area is provided with a bulge matrix formed by a plurality of 4 multiplied by 4 bulges 131; the COB light source packaging adhesive layer positions corresponding to the left area and the right area are respectively provided with a bulge 132, and the maximum height of the bulge corresponding to the left area and the right area is larger than that of the bulge corresponding to the middle area.
As shown in fig. 4f and 4g, the optical device comprising the shaped COB light source 1 further comprises a lens 3 covering the shaped COB light source.
The light distribution curve of the special-shaped COB light source 1 of this embodiment is shown in fig. 4d, and can realize full polarization, the transverse light-emitting angle is about 106 °, and the longitudinal light-emitting angle is about 107 °.
When the lens with the shape shown in fig. 4 a-4 c, 4f and 4g is matched, the light distribution curve is shown in fig. 4 e; the optical device is suitable for illumination of large-space places such as airports, squares and the like. The lens is rotated 180 degrees, the packaging surface still faces the lens, and the light distribution curve is shown in fig. 4 h.
When the lens with the shape shown in fig. 5 a-5 c is matched, the light distribution curve is shown in fig. 5d, and the optical device is suitable for illumination of tunnels and factory buildings.
When the lens with the shape shown in fig. 6 a-6 c is matched, the light distribution curve is shown in fig. 6d, and the optical device is suitable for illumination of tunnels and factory buildings.
Example 2
As shown in fig. 7a, 7b and 7c, the difference between the present embodiment and the embodiment 1 is that the COB light source substrate 11 is square, and the package surface thereon is circular, and includes a semicircular upper region and lower region; the COB light source chips 12 in the upper region have low distribution density, and the COB light source chips 12 in the lower region have high distribution density; a plurality of COB light source chips in the two areas are arranged in rows and columns to form a matrix; the COB light source packaging adhesive layer positions corresponding to the upper area and the lower area are respectively provided with 1 bulge, and the bulge corresponding to the upper area is higher than the bulge corresponding to the lower area.
As shown in fig. 7g, the light distribution curve of the special-shaped COB light source 1 of this embodiment has a lateral light emission angle of about 107 ° and a longitudinal light emission angle of about 117 °.
When the lens with the symmetrical shape shown in fig. 7 d-7 f is matched, the light distribution curve is shown in fig. 7h, and the optical device is suitable for illumination of tunnels and factory buildings.
When the lens with symmetrical shape as shown in fig. 8 a-8 c is matched, the light distribution curve is as shown in fig. 8d, and the optical device is suitable for illumination of urban roads and tunnel places.
When the lens with the shape shown in fig. 9a to 9c is matched, the light distribution curve is shown in fig. 9d, and the optical device is suitable for illumination of large space places such as airports, squares and the like.
Example 3
As shown in fig. 10a, 10b, and 10c, the difference between this embodiment and embodiment 1 is that the package surface on the COB light source substrate includes a left area, two middle rectangular areas, and a right area, and the left area and the right area are 1/4 circular areas; the COB light source chips 12 in each region have the same distribution density; a plurality of COB light source chips in each area are arranged in rows and columns to form a matrix; the COB light source packaging adhesive layer corresponding to each area is provided with 1 bulge, and the maximum height of the bulges corresponding to the left area and the right area is smaller than that of the bulges corresponding to the middle two rectangular areas.
As shown in fig. 10d, the light distribution curve of the special-shaped COB light source 1 of the present embodiment has a lateral light emission angle of about 116 ° and a longitudinal light emission angle of about 118 °.
When the lens with the shape shown in fig. 8 a-8 c is matched, the light distribution curve is shown in fig. 10e, and the optical device is suitable for illumination of tunnels and factory buildings.
When the lens having the shape shown in fig. 4a to 4c is matched, substantially the same light distribution can be obtained by reducing the lens size as compared with the special-shaped COB light source of embodiment 1, thereby reducing the light loss and the cost; the optical device is suitable for illumination in large space places such as airports, squares and the like, and the light distribution curve is shown in fig. 11.
Example 4
As shown in fig. 12a, 12b, and 12c, the difference between the present embodiment and embodiment 1 is that the COB light source substrate is square, and the package surface thereon includes an upper region, a middle region, and a lower region, and the area of the three regions is increased from top to bottom; each region comprises a left rectangular region and a right rectangular region; the upper region and the middle region COB light source chips 12 have the same distribution density and are larger than the lower region COB light source chips 12; a plurality of COB light source chips in each area are arranged in rows and columns to form a matrix; the COB light source packaging adhesive layer corresponding to each rectangular area is provided with 1 protrusion, and the heights of the protrusions of the rectangular areas are the same.
As shown in fig. 12d, the light distribution curve of the special-shaped COB light source 1 of the present embodiment has a lateral light emission angle of about 96 ° and a longitudinal light emission angle of about 104 °.
When the lens with symmetrical shape as shown in fig. 6 a-6 c is matched, the light distribution curve is as shown in fig. 12e, and the optical device is suitable for illumination of urban roads and tunnel places.
When the lens with the shape shown in fig. 5 a-5 c is matched, the light distribution curve is shown in fig. 13, and the optical device is suitable for illumination of urban roads and tunnel places.
The COB light source substrate mainly serves as bearing, heat conduction and the like.
The packaging technology of the COB light source packaging adhesive layer is as follows:
fixing a COB light source chip on a COB light source substrate by using conductive adhesive, dripping packaging glue doped with fluorescent powder into a mold coated with a release agent, and pressing the COB light source surface on the mold, wherein the depth of the mold is 1-8 mm; and then baking and demolding are carried out to obtain the special-shaped COB light source.
The mold packaging can avoid using the dam glue, improve the production efficiency, improve the plasticity of the glue surface and be matched with the compression molding process.
According to the optical device, the light distribution curve can be adjusted differently according to the scene illumination requirement. The light source device has the advantages that different light distribution can be realized by matching multiple light sources with a single lens, and multiple light distribution can be realized by matching multiple light sources with multiple lenses.
Claims (5)
1. The special-shaped COB light source is characterized by comprising a COB light source substrate (11), a plurality of COB light source chips (12) distributed on the COB light source substrate (11), and a COB light source packaging adhesive layer which is arranged on the front surface of the COB light source substrate (11) and covers the COB light source chips; the COB light source substrate (11) is rectangular, the packaging surface of the COB light source substrate comprises a left area (111), a middle area (112) and a right area (113), the left area (111) and the right area (113) are 1/4 circular areas, and the middle area (112) is a rectangular area; the distribution density of COB light source chips (12) in three areas from left to right is from low to high; the COB light source packaging adhesive layer corresponding to the middle area is provided with a convex matrix formed by a plurality of bulges; the COB light source packaging adhesive layer positions corresponding to the left area and the right area are respectively provided with a bulge, and the maximum height of the bulges corresponding to the left area and the right area is larger than that of the bulges corresponding to the middle area.
2. The special-shaped COB light source is characterized by comprising a COB light source substrate (11), a plurality of COB light source chips (12) distributed on the COB light source substrate (11), and a COB light source packaging adhesive layer which is arranged on the front surface of the COB light source substrate (11) and covers the COB light source chips; the COB light source substrate (11) is rectangular, and the packaging surface on the COB light source substrate comprises a left area, two middle rectangular areas and a right area, wherein the left area and the right area are 1/4 circular areas; the COB light source packaging adhesive layer corresponding to each area is provided with 1 bulge, and the maximum height of the bulges corresponding to the left area and the right area is smaller than that of the bulges corresponding to the middle two rectangular areas.
3. The special-shaped COB light source is characterized by comprising a COB light source substrate (11), a plurality of COB light source chips (12) distributed on the COB light source substrate (11), and a COB light source packaging adhesive layer which is arranged on the front surface of the COB light source substrate (11) and covers the COB light source chips; the COB light source substrate (11) is square, and the packaging surface comprises a semicircular upper area and a semicircular lower area; the COB light source chips (12) in the upper region have a distribution density lower than that of the COB light source chips (12) in the lower region; the COB light source packaging adhesive layer positions corresponding to the upper area and the lower area are respectively provided with 1 bulge, and the bulge corresponding to the upper area is higher than the bulge corresponding to the lower area.
4. The special-shaped COB light source is characterized by comprising a COB light source substrate (11), a plurality of COB light source chips (12) distributed on the COB light source substrate (11), and a COB light source packaging adhesive layer which is arranged on the front surface of the COB light source substrate (11) and covers the COB light source chips; the COB light source substrate is square, and the packaging surface on the COB light source substrate comprises an upper region, a middle region and a lower region, wherein the area of the three regions is changed from small to large; each region comprises a left rectangular region and a right rectangular region; the COB light source chips (12) in the upper area and the middle area have the same distribution density and are larger than the COB light source chips (12) in the lower area; the COB light source packaging adhesive layer corresponding to each rectangular area is provided with 1 protrusion, and the heights of the protrusions of the rectangular areas are the same.
5. An optical device comprising a shaped COB light source as claimed in any one of the claims 1 to 4, characterized in that it further comprises a lens (3) covering the shaped COB light source.
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| CN202111551891.6A CN114420825B (en) | 2021-12-17 | 2021-12-17 | Special-shaped COB light source and optical device comprising same |
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| CN202111551891.6A CN114420825B (en) | 2021-12-17 | 2021-12-17 | Special-shaped COB light source and optical device comprising same |
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| CN217714667U (en) * | 2022-05-16 | 2022-11-01 | 长春希达电子技术有限公司 | Special-shaped light-emitting component, box body, backpack and special-shaped light-emitting device comprising same |
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| CN113178435A (en) * | 2021-04-19 | 2021-07-27 | 深圳市洲明科技股份有限公司 | COB packaging structure optical module, display screen and spraying method |
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