CN216597624U - LED support and LED device - Google Patents

Abstract

The utility model discloses an LED bracket and an LED device, wherein the LED bracket comprises a metal bonding pad and a bracket body, the metal bonding pad and the bracket body are integrated into a whole through injection molding, a reflection cup is arranged on the bracket body, the metal bonding pad is provided with a first side surface and a second side surface which form an included angle, part of the first side surface is exposed out of the reflection cup, a first convex part embedded in the bracket body is convexly arranged on the first side surface, and a second convex part embedded in the bracket body is convexly arranged on the second side surface. The LED support can improve the bonding force between the metal bonding pad and the support body and between the support body and the packaging adhesive, and has good air tightness.

Description

LED support and LED device

Technical Field

The utility model relates to the technical field of LEDs, in particular to an LED bracket and an LED device.

Background

The LED has the advantages of rich colors, small volume, environmental protection, energy conservation, long service life and the like, and is applied to more and more fields at present, particularly applied to the display industry as a backlight source. With the continuous development of backlight display technology, the performance requirements on LED devices are also higher and higher.

In the manufacturing process of the LED support, the air tightness difference of the LED support is large due to the structural difference, the performance difference is also large after the LED support is packaged and manufactured, if the air tightness of the LED support is insufficient, water vapor and the like can permeate into an LED internal chip and a circuit structure, the service life of an LED device is shortened, and the requirement of a customer can not be met.

SUMMERY OF THE UTILITY MODEL

One object of an embodiment of the present invention is to: the LED support is simple in structure, can improve the bonding force of the metal bonding pad, the support body and the packaging adhesive, and has good waterproof performance.

Another object of an embodiment of the present invention is to: the LED device is good in air tightness and long in service life.

To achieve the purpose, the embodiment of the utility model adopts the following technical scheme:

in a first aspect, a light-emitting diode (LED) support is provided, and comprises a metal bonding pad and a support body, wherein the metal bonding pad and the support body are of an integrated structure through injection molding, a reflection cup is arranged on the support body, the metal bonding pad is provided with a first side face and a second side face which are arranged at included angles, part of the first side face is exposed out of the reflection cup, a first convex portion embedded in the support body is arranged on the first side face in a protruding mode, and a second convex portion embedded in the support body is arranged on the second side face in a protruding mode.

As a preferable mode of the LED support, the second protrusion has a thickness of a, the metal pad has a thickness of b,

as a preferable mode of the LED support, the second side surface includes a first sub-side surface and a second sub-side surface respectively located at two sides of the second protrusion, the first sub-side surface is adjacent to the first side surface, the first sub-side surface is spaced from the center of the metal pad by a distance L1, the second sub-side surface is spaced from the center of the metal pad by a distance L2, and L1 is not equal to L2.

As a preferable mode of the LED bracket, a distance between a side of the second protrusion away from the center of the metal pad and the outer sidewall of the bracket body is L3, a distance between the second sub-side and the outer sidewall of the bracket body is L4,

as a preferable scheme of the LED support, at least one third protrusion or recess is disposed on the first sub-side; and/or at least one third convex part or concave part is arranged on the second sub-side surface.

As a preferable scheme of the LED bracket, the cup wall of the reflection cup is concavely provided with at least one groove, and the groove is annularly arranged around the center of the reflection cup.

As a preferable mode of the LED support, the first protrusion has a first connecting surface and a second connecting surface that are oppositely disposed, and an end of the first connecting surface away from the first side surface intersects with an end of the second connecting surface away from the first side surface.

As a preferred aspect of the LED support, the first connecting surface is flush with the second side surface; and/or the second connecting surface is an arc surface or an inclined surface.

As a preferable mode of the LED support, the first convex portion is disposed around the metal pad; and/or the second convex part is arranged around the metal pad.

In a second aspect, an LED device is provided, which includes an LED support, a chip and a packaging adhesive, wherein the LED support is adopted as the LED support, the chip is fixed on a metal pad of the LED support, and the chip is packaged in a reflection cup of the LED support through the packaging adhesive.

The embodiment of the utility model has the beneficial effects that: the first convex part and the second convex part are arranged to increase the joint area of the metal bonding pad and the bracket body, so that the path of water vapor and the like entering the LED bracket is increased, the water vapor can be subjected to certain resistance when penetrating into the LED bracket from bottom to top, and the water vapor and the like can be effectively prevented from penetrating into the LED chip and the circuit structure; and personally submit the contained angle setting through first side and second side, first convex part and second convex part set up respectively on first side and second side, and first convex part and second convex part also are the contained angle setting, and metal pad and support body can be better inlay together to improve the bonding strength of metal pad and support body, improve the gas tightness of LED support.

Drawings

The utility model is explained in more detail below with reference to the figures and examples.

Fig. 1 is a partial cross-sectional view of an LED fixture according to an embodiment of the utility model.

FIG. 2 is an enlarged view of a portion A of an LED support according to an embodiment of the present invention.

Fig. 3 is a partial sectional view of the LED support according to the embodiment of the utility model, wherein the first sub-side and the second sub-side are provided with third protrusions.

In the figure:

1. a metal pad; 11. a first side surface; 12. a first convex portion; 121. a first connection face; 122. a second connection face; 13. a second side surface; 131. a first sub-side; 132. a second sub-side; 14. a second convex portion; 15. a third side; 16. a third convex portion; 2. a stent body; 3. a reflective cup; 31. and (4) a groove.

Detailed Description

In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. 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, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

As shown in fig. 1 and 2, an embodiment of the utility model discloses an LED bracket, which includes a metal pad 1 and a bracket body 2, the metal pad 1 and the bracket body 2 are formed into an integral structure through injection molding, a reflection cup 3 is disposed on the bracket body 2, the metal pad 1 has a first side surface 11 and a second side surface 13 which are arranged at an included angle, the first side surface 11 is partially exposed out of the reflection cup 3, a first convex portion 12 embedded in the bracket body 2 is convexly disposed on the first side surface 11, and a second convex portion 14 embedded in the bracket body 2 is convexly disposed on the second side surface 13. The first convex part 12 and the second convex part 14 are arranged to increase the bonding area of the metal bonding pad 1 and the support body 2, so that the path of water vapor and the like entering the LED support is prolonged, the water vapor can be subjected to certain resistance when penetrating into the LED support from bottom to top, and the water vapor and the like can be effectively prevented from penetrating into an LED chip and a circuit structure; and through first side 11 and second side 13 be the contained angle setting, first convex part 12 and second convex part 14 set up respectively on first side 11 and second side 13, first convex part 12 and second convex part 14 also are the contained angle setting, and metal pad 1 and support body 2 can be better inlay together to improve the bonding strength of metal pad 1 and support body 2, can improve the gas tightness of LED support.

Preferably, the thickness of the second protrusion 14 is a, the thickness of the metal pad 1 is b,

when in use

In the process, the thickness of the second convex part 14 is moderate, so that the bonding strength of the metal pad 1 and the bracket body 2 can be improved, the air tightness of the LED bracket is ensured, and meanwhile, the manufacturing cost of the LED bracket cannot be increased due to the large thickness of the second convex part 14.

In the present embodiment, the second side surface 13 includes a first sub-side surface 131 and a second sub-side surface 132 respectively located at two sides of the second protrusion 14, the first sub-side surface 131 is adjacent to the first side surface 11, a distance between the first sub-side surface 131 and the center of the metal pad 1 is L1, a distance between the second sub-side surface 132 and the center of the metal pad 1 is L2, and L1 is not equal to L2. By arranging that the distances from the first sub-side 131 and the second sub-side 132 to the centers of the metal pads 1 are unequal, that is, the L1 is not equal to the L2, the path of water vapor and the like entering the LEDs can be further extended, so that the water vapor and the like are effectively prevented from entering the LED support, and the air tightness of the LED support is ensured; meanwhile, the L1 is not equal to the L2, the contact surface between the second convex part 14 and the bracket body 2 is larger, the second convex part 14 and the bracket body 2 can be better embedded together, and the bonding strength between the metal pad 1 and the bracket body 2 is further improved.

Preferably, L1 is greater than L2. Enough space is reserved on the first side 11 for mounting the chip, and when L1 is larger than L2, the first side 11 is relatively large, which is convenient for mounting the chip.

Specifically, the distance between the side of the second protrusion 14 away from the center of the metal pad 1 and the outer side wall of the holder body 2 is L3, i.e. the shortest distance between the second protrusion 14 and the outer side wall of the holder body 2, the distance between the second sub-side 132 and the outer side wall of the holder body 2 is L4,

l3 is too small, which reduces the strength of the holder body 2, thereby affecting the strength of the entire LED device; if L3 is too large, the size of second projection 14 decreases, and the bonding strength between metal pad 1 and holder body 2 decreases, thereby reducing the reliability of the LED device

The bonding strength of the metal bonding pad 1 and the support body 2 can be ensured, and meanwhile, the strength of the whole LED device is not influenced.

In this embodiment, the wall of the reflector cup 3 is provided with at least one recess 31, the recess 31 being annularly arranged around the center of the reflector cup 3. Set up recess 31 through the cup wall at reflection cup 3, can improve the joint strength of support body 2 and encapsulation glue, improve the gas tightness of LED support, guarantee that steam etc. can't permeate LED chip and circuit structure from the cup wall of reflection cup 3. Preferably, the bottom of the reflecting cup 3 is provided with a plurality of grooves 31 at intervals towards the cup opening, so that the bonding strength of the bracket body 2 and the packaging adhesive can be further improved, and the air tightness of the LED bracket is ensured.

As shown in fig. 1 and fig. 2, in the present embodiment, the first protrusion 12 has a first connection surface 121 and a second connection surface 122 disposed oppositely, and an end of the first connection surface 121 away from the first side surface 11 intersects with an end of the second connection surface 122 away from the first side surface 11. Specifically, the first connection surface 121 is flush with the second side surface 13, the second connection surface 122 is an arc surface or an inclined surface, and the first connection surface 121 and the second connection surface 122 form an upward convex portion. This design has increased the area of contact of metal pad 1 with support body 2 for steam receives certain resistance when getting into LED support inside from lower up infiltration, and the inside that steam got into LED support has effectively been blockked to the structure of first convex part 12, has further improved LED support's waterproof performance.

In other embodiments, the first connecting surface 121 and the second side surface 13 may not be flush.

Specifically, the first convex portion 12 is disposed around the metal pad 1, and the second convex portion 14 is disposed around the metal pad 1. The first convex part 12 is arranged on the first side surface 11 of the metal pad 1 in a surrounding mode, the second convex part 14 is arranged on the second side surface 13 of the metal pad 1 in a surrounding mode, the attaching surface of the metal pad 1 and the support body 2 can be further increased, the bonding strength of the metal pad 1 and the support body 2 is improved, and therefore the air tightness of the LED support is guaranteed.

In another embodiment, at least one third protrusion 16 or recess is provided on the first sub-side 131 and/or the second sub-side 132. Referring to fig. 3, in the present embodiment, in addition to the structure of the above embodiment, at least one third protrusion 16 is disposed on each of the first sub-side 131 and the second sub-side 132. The third protrusion 16 circumferentially surrounds the first and second sub-side surfaces 131 and 132. By arranging the third convex part 16, the connecting surface between the second side surface 13 and the metal pad 1 can be further increased, and the path of water vapor and the like entering the LED can be prolonged, so that the air tightness of the LED support can be improved.

In other embodiments, at least one recess is provided on the first sub-side 131 or the second sub-side 132.

In this embodiment, the metal pad 1 includes a third side 15 opposite to the first side 11, the third side 15 is connected to the first side 11 through the second side 13, and the third side 15 is flush with a side of the bracket body 2 away from the cup opening of the reflective cup 3. One side parallel and level that reflection cup 3's rim of a cup was kept away from to third side 15 and support body 2 can guarantee the steady of the bottom of LED support, improves metal pad 1 and support body 2's laminating intensity simultaneously, and inside difficult laminating department entering into the LED support from metal pad 1 and support body 2 of steam etc..

The utility model also discloses an LED device, which comprises an LED bracket, a chip and packaging glue, wherein the LED bracket is the LED bracket in the embodiment, the chip is fixed on the metal bonding pad 1 of the LED bracket, and the chip is packaged in the reflecting cup 3 of the LED bracket through the packaging glue. The LED support of this embodiment is used to the LED device, has good gas tightness, can block steam etc. to get into chip and circuit structure to improve the life of LED device, can satisfy customer's user demand.

In the description herein, it is to be understood that the terms "upper" and the like are based on the orientation or positional relationship shown in the drawings, which are for convenience of description and simplicity of operation, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present invention.

In the description herein, references to the term "an embodiment" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be appropriately combined to form other embodiments as will be appreciated by those skilled in the art.

The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the utility model and should not be construed in any way as limiting the scope of the utility model. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive effort, which would fall within the scope of the present invention.

Claims (10)

1. The utility model provides a LED support, includes metal pad and support body, the metal pad with the support body is through injection moulding structure as an organic whole, be provided with the reflection cup on the support body, its characterized in that, the metal pad has first side and the second side that is the contained angle setting, the part of first side expose in the reflection cup, the protrusion is provided with embedded in this internal first convex part of support, the protrusion is provided with embedded in this internal second convex part of support on the second side.

2. The LED holder according to claim 1, wherein the second protrusion has a thickness of a, the metal pad has a thickness of b,

3. the LED support of claim 1, wherein the second side comprises a first sub-side and a second sub-side respectively located on two sides of the second protrusion, the first sub-side is adjacent to the first side, the first sub-side is spaced from the center of the metal pad by a distance L1, the second sub-side is spaced from the center of the metal pad by a distance L2, and L1 is not equal to L2.

4. The LED holder according to claim 3, wherein the distance between the side of the second protrusion away from the center of the metal pad and the outer sidewall of the holder body is L3, the distance between the second sub-side and the outer sidewall of the holder body is L4,

5. the LED holder according to claim 3, wherein the first sub-side has at least one third protrusion or indentation provided thereon; and/or the presence of a gas in the gas,

the second sub-side surface is provided with at least one third convex part or concave part.

6. The LED holder according to claim 1, wherein the cup wall of the reflector cup is provided with at least one groove, the groove being annularly disposed about a center of the reflector cup.

7. The LED support according to any one of claims 1 to 6, wherein the first protrusion has a first connection surface and a second connection surface which are oppositely arranged, and an end of the first connection surface away from the first side surface intersects with an end of the second connection surface away from the first side surface.

8. The LED holder according to claim 7, wherein the first connection face is flush with the second side face; and/or the second connecting surface is an arc surface or an inclined surface.

9. The LED holder according to any one of claims 1 to 6, wherein the first convex portion is disposed around the metal pad; and/or the second convex part is arranged around the metal pad.

10. An LED device, comprising an LED support, a chip and packaging glue, wherein the LED support is the LED support of any one of claims 1 to 9, the chip is fixed on a metal pad of the LED support, and the chip is packaged in a reflecting cup of the LED support through the packaging glue.

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