CN216389419U

CN216389419U - Luminous diode with adjustable luminous surface

Info

Publication number: CN216389419U
Application number: CN202122721827.XU
Authority: CN
Inventors: 杨皓宇; 朱澄; 王浩; 陈锦庆; 林紘洋; 李昇哲; 万喜红
Original assignee: Fujian Lightning Optoelectronic Co ltd
Current assignee: Fujian Lightning Optoelectronic Co ltd
Priority date: 2021-11-08
Filing date: 2021-11-08
Publication date: 2022-04-26
Anticipated expiration: 2031-11-08

Abstract

The utility model provides a light emitting diode with an adjustable light emitting surface. The chip is arranged on the substrate and is positioned in the inner cavity of the reflecting cup; the reflecting cup is arranged on the substrate and is provided with a first light outlet and an internal cavity; the packaging layer is arranged in the internal cavity and covers the chip and part of the substrate; the light blocking structure is positioned on the reflecting cup and the packaging layer and is provided with a second light outlet, and the light blocking structure is used for blocking light rays so that the light rays are emitted out through the second light outlet; the proportion of the horizontal projection area of the second light outlet to the horizontal projection area of the first light outlet is greater than or equal to 5% and less than or equal to 75%. Therefore, the size of the light-emitting surface can be changed, and the use requirement is met.

Description

Luminous diode with adjustable luminous surface

Technical Field

The utility model relates to the technical field of light emitting diodes, in particular to a light emitting diode with an adjustable light emitting surface.

Background

A Light Emitting Diode (LED) is a semiconductor device that emits Light by using energy released during carrier recombination, and an LED chip has many advantages of low power consumption, pure chromaticity, long service life, small size, fast response time, energy saving, environmental protection, and the like, and is widely applied to lighting, visible Light communication, Light Emitting display, and other scenes. The LED chip is divided into a forward mounting structure, an inverted mounting structure and a vertical structure.

In the traditional LED, because the lead frame mould is fixed, the shape and the luminous surface of the manufactured product are fixed. Because of the limitation of chip size and process technology, the light-emitting surface cannot be changed more, and the current diversified use requirements of the light-emitting surface cannot be satisfied.

Therefore, the primary objective of the present invention is to provide a light emitting diode with an adjustable light emitting surface to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model provides a light emitting diode with an adjustable light emitting surface, which comprises a substrate, a chip, a reflecting cup, a packaging layer and a light blocking structure.

The chip is arranged on the substrate and is positioned in the inner cavity of the reflecting cup; the reflecting cup is arranged on the substrate and is provided with a first light outlet and an internal cavity; the packaging layer is arranged in the internal cavity and covers the chip and part of the substrate; the light blocking structure is positioned on the reflecting cup and the packaging layer and is provided with a second light outlet, and the light blocking structure is used for blocking light rays so that the light rays are emitted out through the second light outlet; the proportion of the horizontal projection area of the second light outlet to the horizontal projection area of the first light outlet is greater than or equal to 5% and less than or equal to 75%.

In an embodiment, the second light outlet is square or circular when viewed from above the light emitting diode toward the substrate.

In an embodiment, the number of the second light outlets is multiple, and the second light outlets are arranged in an array form when viewed from above the light emitting diode toward the substrate.

In an embodiment, when looking down from the top of the light emitting diode to the substrate, the distance between two adjacent second light outlets is between 0.1mm and 1.5 mm.

In an embodiment, when the substrate is viewed from above the light emitting diode, a maximum straight line segment of the second light outlet is in a range of 0.3mm to 3 mm.

In one embodiment, the light blocking structure is an optical film.

In one embodiment, the light blocking structure has a thickness in a range of 0.05mm to 0.3 mm.

In an embodiment, the light blocking structure is annular or grid-shaped when viewed from above the light emitting diode toward the substrate.

In an embodiment, the light blocking structure is a reflective layer for reflecting light so that the light is emitted through the second light outlet.

In an embodiment, a ratio of a horizontal projection area of the second light outlet to a horizontal projection area of the first light outlet is greater than or equal to 10% and less than or equal to 45%.

One advantage of the present invention is to provide a light emitting diode with an adjustable light emitting surface, in which the size of the light emitting surface of any LED element can be changed without re-opening the mold by the arrangement of the light blocking structure, and a small light emitting surface product made through the light blocking structure is more beneficial to the design of a terminal product, and can also improve the light source concentration and reduce the irregular light divergence.

Another advantage of the present invention is to provide a light emitting diode with an adjustable light emitting surface, which can form a smaller light emitting surface and a light emitting surface with a special shape, such as a single-point light emitting surface, an array light emitting surface, a checkerboard light emitting surface, etc., by changing the shape of the light blocking structure.

Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model. The objectives and other advantages of the utility model will be realized and attained by the structure particularly pointed out in the written description and claims hereof.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts; in the following description, the drawings are illustrated in a schematic view, and the drawings are not intended to limit the present invention.

FIG. 1 is a schematic diagram of an LED with an adjustable light-emitting surface according to the present invention;

FIG. 2 is a schematic diagram of a light-emitting surface of an LED with an adjustable light-emitting surface according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a light-emitting surface of an LED with an adjustable light-emitting surface according to another embodiment of the present invention;

FIG. 4 is a schematic structural diagram of an LED with an adjustable light-emitting surface according to yet another embodiment of the present invention.

Reference numerals:

10. 20-a light emitting diode; 12-a substrate; 14-a chip; 16-a reflector cup; 161-a first light outlet; 162-an interior chamber; 18-an encapsulation layer; 22-a light blocking structure; 222-a second light outlet; l1, L2-distance; h1-thickness.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments; the technical features designed in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "lateral", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations and positional relationships based on those shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or component in question must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be taken as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified. In addition, the term "comprises" and any variations thereof mean "including at least".

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used herein, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a light emitting diode 10 with an adjustable light emitting surface according to the present invention. To achieve at least one of the above advantages or other advantages, an embodiment of the present invention provides a light emitting diode 10 with an adjustable light emitting surface. As shown, the light emitting diode 10 with an adjustable light emitting surface includes a substrate 12, a chip 14, a reflective cup 16, an encapsulation layer 18, and a light blocking structure 22. Further, the reflective cup 16 has a first light outlet 161 and an inner cavity 162, and the light blocking structure 22 has a second light outlet 222.

The chip 14 is disposed on the substrate 12 and is located within the interior chamber 162 of the reflector cup 16. The chip 14 serves as a light source for emitting light.

The reflective cup 16 is disposed on the substrate 12 for reflecting light, so that more light is emitted through the first light-emitting port 161 and then through the second light-emitting port 222. Preferably, the inclined sidewall of the reflector cup 16 forms an angle of 50 ° to 80 ° with the upper surface of the substrate 12.

The encapsulation layer 18 is disposed within the interior chamber 162 and covers the die 14 and a portion of the substrate 12. The encapsulation layer 18 may be formed by filling the inner cavity 162 with an encapsulation glue. Preferably, the top surface of the encapsulation layer 18 is flush with the top surface of the reflector cup 16, or the top surface of the encapsulation layer 18 is slightly lower than the top surface of the reflector cup 16.

The light blocking structure 22 is disposed on the reflective cup 16 and the package layer 18, and is used for blocking light, that is, preventing light from passing through the light blocking structure 22, so that more light is emitted from the second light outlet 222 to change the light emitting surface. In one embodiment, the light blocking structure 22 may be an optical film, which may be white, black or other colors capable of changing the light pattern, and the material may be silica gel, plastic, glass, etc. which can absorb light or reflect light. The light blocking structure 22 may also be a reflective layer for reflecting light, so as to prevent light from passing through by means of the total reflection characteristic of any incident light, so that the light is emitted through the second light outlet 222, and the light emitting surface is changed. However, the present invention is not limited thereto, and the light blocking structure 22 may be formed by directly injecting other plastic materials capable of changing the light type color onto the light emitting surface to shield some parts of the light emitting diode 10, so as to change the light emitting surface of the light emitting diode 10.

In one embodiment, as shown in fig. 1, the light blocking structure 22 has a thickness L1 in the range of 0.05mm to 0.3mm for excellent light blocking effect. Particularly, when the light blocking structure 22 is an optical film, the thickness L1 of the optical film is controlled to be in the range of 0.05mm to 0.3mm, so that an excellent light blocking effect can be achieved.

In a further description, the second light outlet 222 is smaller than the first light outlet 161 to change the size of the light emitting surface of the led 10. In other words, the ratio of the horizontal projection area of the second light outlet 222 to the horizontal projection area of the first light outlet 161 is equal to or greater than 5% and equal to or less than 75%. Preferably, the ratio of the horizontal projection area of the second light outlet 222 to the horizontal projection area of the first light outlet 161 is greater than or equal to 10% and less than or equal to 45%. More preferably, the ratio of the horizontal projection area of the second light outlet 222 to the horizontal projection area of the first light outlet 161 is greater than or equal to 10% and less than or equal to 25%. By forming a smaller light emitting surface, the light source concentration can be further improved, and the irregular divergence degree of light can be reduced.

The horizontal projection area refers to a projection area of the light emitting diode 10 on a horizontal plane, where the direction from the substrate 12 to the light blocking structure 22 is a vertical direction perpendicular to the horizontal plane, and the elements (such as the first opening, the second opening, etc.) are projected onto the horizontal plane. For example, as shown in fig. 2, the horizontally projected area of the second opening is the area of the second opening of the circular solid line, and the horizontally projected area of the first opening is the area of the first opening of the circular broken line.

In one embodiment, as shown in fig. 2, the second light outlet 222 has a circular shape when viewed from above the light emitting diode 10 toward the substrate 12. In other words, the light blocking structure 22 is shaped like a ring, the hatched filling portion in fig. 2 is the light blocking structure 22, and the dotted line is the edge of the first opening 161. However, the shape of the second light outlet 222 is not limited to this, and may be square, oval, polygonal, irregular, or the like.

In an embodiment, as shown in fig. 3, the number of the second light outlets 222 may be multiple, and the multiple second light outlets 222 are arranged in an array form from the upper side of the light emitting diode 20 to the substrate 12 in a plan view, so as to form an array-type light emitting surface with a special shape. In other words, the light blocking structure 22 is in a grid shape, the shaded filling portion in fig. 3 is the light blocking structure 22, and the dotted line is the edge of the first opening 161. Overall, by changing the number and shape of the second light outlets 222 of the light blocking structure 22, a smaller light emitting surface can be achieved, and a light emitting surface with a special shape, such as a single-point light emitting surface, an array light emitting surface, a checkerboard light emitting surface, etc., can be formed.

In one embodiment, as shown in fig. 3, when looking down from the top of the light emitting diode 20 toward the substrate 12, the distance L1 between two adjacent second light outlets 222 is between 0.1mm and 1.5mm, so as to ensure an excellent light emitting effect.

In one embodiment, the range of the maximum straight line segment of the second light outlet 222 is 0.3mm to 3mm when looking down from the top of the light emitting diode 10 toward the substrate 12. The largest straight line segment of the second light outlet 222 can be understood as: when the shape of the second light outlet 222 is circular, the largest straight line segment of the second light outlet 222 is the diameter of the circle.

In one embodiment, as shown in fig. 4, compared to the led 10 shown in fig. 1, in the led 20 of the present embodiment, the light-blocking structure 22 is spaced apart from the outer edge of the reflective cup 16 by a distance L2, and the distance L2 is in the range of 0.1mm to 2mm, so that the light-blocking effect of the light-blocking structure 22 can be ensured, the supporting burden of the lower components can be reduced, and the material cost of the light-blocking structure 22 can be reduced.

In summary, the

light emitting diodes

10 and 20 with adjustable light emitting surfaces provided by the present invention can change the size of the light emitting surface of any LED element without mold opening again by the arrangement of the light blocking structure 22, and a small light emitting surface product manufactured by the light blocking structure 22 is more beneficial to the design of a terminal product, and can also improve the light source concentration and reduce irregular light divergence. In addition, by changing the shape of the light blocking structure 22, a smaller light emitting surface can be formed, and a light emitting surface with a special shape, such as a single-point light emitting surface, an array light emitting surface, a checkerboard light emitting surface, or the like, can be formed.

In addition, it will be appreciated by those skilled in the art that, although there may be many problems with the prior art, each embodiment or aspect of the present invention may be improved only in one or several respects, without necessarily simultaneously solving all the technical problems listed in the prior art or in the background. It will be understood by those skilled in the art that nothing in a claim should be taken as a limitation on that claim.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An adjustable light emitting diode, the adjustable light emitting diode comprising:

a substrate;

a chip disposed on the substrate;

the reflecting cup is arranged on the substrate and is provided with a first light outlet and an internal cavity, and the chip is positioned in the internal cavity;

the packaging layer is arranged in the internal cavity and covers the chip and part of the substrate;

the light blocking structure is positioned on the reflecting cup and the packaging layer and is provided with a second light outlet, and the light blocking structure is used for blocking light rays so that the light rays are emitted out through the second light outlet;

the proportion of the horizontal projection area of the second light outlet to the horizontal projection area of the first light outlet is greater than or equal to 5% and less than or equal to 75%.

2. The adjustable light emitting face led of claim 1 wherein: the second light outlet is square or circular when viewed from above the light emitting diode toward the substrate.

3. The adjustable light emitting face led of claim 1 wherein: the number of the second light outlets is multiple, and the second light outlets are arranged in an array form when the substrate is overlooked from the upper part of the light emitting diode.

4. The adjustable light emitting face led of claim 3 wherein: the distance between two adjacent second light outlets is 0.1mm-1.5mm when the substrate is overlooked from the upper part of the light-emitting diode.

5. The adjustable light emitting face led of claim 1 wherein: and when the substrate is overlooked from the upper part of the light-emitting diode, the range of the maximum straight line segment of the second light outlet is 0.3mm-3 mm.

6. The adjustable light emitting face led of claim 1 wherein: the light blocking structure is an optical film.

7. The adjustable light emitting face light emitting diode of claim 1 or 6 wherein: the thickness range of the light blocking structure is 0.05mm-0.3 mm.

8. The adjustable light emitting face led of claim 1 wherein: the light blocking structure is annular or latticed when the light emitting diode is overlooked from the upper part to the substrate.

9. The adjustable light emitting face led of claim 1 wherein: the light blocking structure is a reflecting layer and is used for reflecting light rays so that the light rays are emitted out through the second light outlet.

10. The adjustable light emitting face led of claim 1 wherein: the proportion of the horizontal projection area of the second light outlet to the horizontal projection area of the first light outlet is greater than or equal to 10% and less than or equal to 45%.