LED packaging support and LED lamp bead

Abstract

The utility model provides an LED packaging support and an LED lamp bead, and relates to the semiconductor technology field, the LED packaging support comprises a base plate and a bowl cup arranged on the base plate, the bowl cup is provided with a groove used for placing an LED chip, the side wall of the groove is provided with an annular groove, the bottom of the groove is provided with a fixing groove, the fixing groove is internally provided with a connecting piece, and the connecting piece is connected with the base plate. The adhesive force between the connecting piece and the fluorescent glue is larger than the adhesive force between the bottom plate and the fluorescent glue. The LED lamp bead comprises the LED packaging support. The LED packaging support solves the problem that in the prior art, the combination effect of fluorescent glue in a support and the cup wall of a support bowl cup is poor.

Description

Technical Field

[0001] The utility model relates to the technical field of LEDs, and in particular to an LED packaging bracket and an LED lamp bead. Background Art

[0002] LED lamp beads refer to small devices that use LED (light-emitting diode) as a light source. LED is a solid-state light-emitting device with the characteristics of high brightness, low energy consumption, and long life, so it is widely used in lighting, display, and indication. LED lamp beads are usually composed of multiple LED chips that are processed in a small package and connected to a circuit board.

[0003] The LED bracket is the base of the LED lamp bead before packaging. On the basis of the LED bracket, the chip is fixed in, the positive and negative electrodes are soldered on, and then the packaging glue is used to package it into shape.

[0004] LED lamp beads are made by fixing the chip on the LED bracket, soldering the wires, applying fluorescent glue, encapsulating and baking. Since they are made of a combination of different materials, there will be a problem with the combination of materials, which will affect the quality of the overall lamp beads. The wall of the bracket bowl in the prior art is relatively smooth, and the fluorescent glue will not have enough grip, which will cause the bracket and the fluorescent glue filled in to separate after curing, affecting the performance of the lamp beads. Utility Model Content

[0005] Based on this, the purpose of the utility model is to provide an LED packaging bracket and LED lamp beads, aiming to solve the problem of poor bonding between the fluorescent glue in the bracket and the cup wall of the bracket bowl in the prior art.

[0006] The LED packaging bracket proposed in the utility model includes a base plate and a bowl cup arranged on the base plate, the bowl cup is provided with a groove for placing the LED chip, the side wall of the groove is provided with an annular groove, the bottom of the groove is provided with a fixing groove, and a connecting piece is provided in the fixing groove, and the bonding force between the connecting piece and the fluorescent glue is greater than the bonding force between the base plate and the fluorescent glue.

[0007] The above-mentioned LED packaging bracket, by opening a groove on the bowl cup, allows the LED chip to be fixed in the bowl cup and connected to the bottom plate, and then by opening an annular groove on the inner wall of the groove, when the groove is filled with fluorescent glue to achieve packaging, the fluorescent glue will enter the annular groove, thereby increasing the contact area between the fluorescent glue and the bowl cup, making the adhesion between the fluorescent glue and the bowl cup stronger. In addition, after the fluorescent glue solidifies, part of it is placed in the annular groove, so that the annular groove clamps a part of the fluorescent glue, thereby strengthening the gripping force of the fluorescent glue. In addition, a fixing groove is also provided at the bottom of the groove, and a connecting piece is provided in the fixing groove. By adjusting the material of the connecting piece, the properties of the connecting piece and the fluorescent glue are close, and then the adhesion between the connecting piece and the fluorescent glue is stronger, so that the fluorescent glue and the bracket are not easy to separate. Therefore, the utility model solves the problem of poor bonding effect between the fluorescent glue in the bracket and the cup wall of the bracket bowl in the prior art.

[0008] In addition, the LED packaging bracket proposed by the utility model may also have the following additional technical features:

[0009] Preferably, the groove side wall is provided with a plurality of the annular grooves, and the plurality of the annular grooves are equidistantly distributed along the height direction of the bottom plate.

[0010] Preferably, the cross-sectional areas of the plurality of annular grooves gradually decrease from one side close to the bottom plate to the other side.

[0011] Preferably, the openings of two adjacent annular grooves face opposite directions.

[0012] Preferably, a white glue layer and a silver-plated layer are provided at the bottom of the groove, the white glue layer is arranged on the connecting piece, and the silver-plated layer is arranged on the bottom plate.

[0013] Preferably, the annular groove comprises a transverse groove portion and a vertical groove portion which are vertically connected to each other, and the vertical groove portion is arranged on a side of the transverse groove portion away from the inner wall of the bowl.

[0014] Preferably, the fixing groove is a step groove, and the width of the step at the bottom of the fixing groove is greater than the width of the step at the top of the fixing groove.

[0015] Preferably, the side wall of the groove forms a preset angle with the bottom plate, so that the cross-sectional area of ​​the groove gradually increases from one side close to the bottom plate to the other side.

[0016] Preferably, a transition fillet is provided at the connection between the side walls of two adjacent grooves.

[0017] In addition, the utility model also provides an LED lamp bead, and the LED lamp bead includes the above-mentioned LED packaging bracket. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the LED packaging bracket proposed in the first embodiment of the utility model;

[0019] Figure 2 A cross-sectional view of the LED packaging bracket proposed in the first embodiment of the utility model;

[0020] Figure 3 It is a cross-sectional view of the LED packaging bracket proposed in the second embodiment of the utility model.

[0021] Description of main component symbols:

[0022] Base Plate 10 Bowls and cups 20 Grooves 21 Annular groove 22 Fixed slot 23 Connectors 30 White glue layer 40 Silver coating 50 Transverse groove part 221 Vertical groove 222 Transition fillet 24

[0023] The following specific implementation manner will further illustrate the present utility model in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0024] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0025] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0027] See also Figure 1 to Figure 2 , shown is an LED package bracket in the first embodiment of the utility model, comprising a base plate 10 and a bowl 20 disposed on the base plate 10, and a groove 21 for placing an LED chip is opened on the bowl 20, wherein:

[0028] An annular groove 22 is formed on the side wall of the groove 21 , a fixing groove 23 is formed on the bottom of the groove 21 , a connecting piece 30 is formed in the fixing groove 23 , and the bonding force between the connecting piece 30 and the fluorescent glue is greater than the bonding force between the bottom plate 10 and the fluorescent glue.

[0029] It can be understood that by providing a groove 21 on the bowl 20, the LED chip can be fixed in the bowl 20 and connected to the bottom plate 10, and then by providing an annular groove 22 on the inner wall of the groove 21, when the groove 21 is filled with fluorescent glue to achieve encapsulation, the fluorescent glue will enter the annular groove 22, thereby increasing the contact area between the fluorescent glue and the bowl 20, making the adhesion between the fluorescent glue and the bowl 20 stronger. In addition, after the fluorescent glue solidifies, part of it is placed in the annular groove 22, so that the annular groove 22 clamps a part of the fluorescent glue, thereby strengthening the gripping force of the fluorescent glue. In addition, a fixing groove 23 is provided at the bottom of the groove 21, and a connecting member 30 is provided in the fixing groove 23. By adjusting the material of the connecting member 30, the properties of the connecting member 30 and the fluorescent glue are close, thereby making the adhesion between the connecting member 30 and the fluorescent glue stronger, so that the fluorescent glue and the bracket are not easy to separate. Therefore, the utility model solves the problem of poor bonding effect between the fluorescent glue in the bracket and the bowl cup wall of the bracket in the prior art.

[0030] It should be noted that the addition of the annular groove 22 ensures sufficient adhesion between the fluorescent glue and the side wall of the bowl 20, thereby preventing a gap from being formed between the fluorescent glue and the side wall of the bowl 20, thereby avoiding penetration during subsequent vulcanization or red ink experiments. In addition, the addition of the annular groove 22 also increases the penetration path of sulfide gas or red ink, making it more difficult for these gases or liquids to penetrate into the interior of the lamp bead, thereby improving the lamp bead's ability to resist experiments.

[0031] Specifically, the side wall of the groove 21 is provided with a plurality of annular grooves 22, and the plurality of annular grooves 22 are equidistantly distributed along the height direction of the bottom plate 10. By providing a plurality of annular grooves 22, the contact area between the fluorescent glue and the bowl cup 20 is increased, and the bonding force between the fluorescent glue and the bowl cup 20 is improved. In addition, such a configuration enables multiple buckle structures to be formed on the outside of the fluorescent glue after the fluorescent glue is cured, and the buckles interact with each other, so that the fluorescent glue buckles the annular grooves 22 to prevent the fluorescent glue from peeling off from the bowl cup.

[0032] Furthermore, the cross-sectional areas of the plurality of annular grooves 22 gradually decrease from one side close to the bottom plate 10 to the other side. Since the cross-sectional area of ​​the side wall of the bowl cup 20 gradually decreases from one side close to the bottom plate 10 to the other side, the depth of the annular grooves 22 gradually decreases from one side close to the bottom plate 10 to the other side by gradually designing the cross-sectional areas of each annular groove 22, thereby ensuring the structural strength of the side wall of the bowl cup 20 and improving the bonding force between the fluorescent glue and the bowl cup 20. In addition, since the inner diameter of the groove 21 gradually increases from one side close to the bottom plate 10 to the other side, the annular grooves 22 are arranged in this way, so that the volumes of the annular grooves 22 are close to each other, and thus the contact areas between the fluorescent glue in each annular groove 22 and the bowl cup 20 are close, thereby ensuring that the bonding force of the outer side of the fluorescent glue is evenly distributed, so as to ensure that the outer side of the fluorescent glue is bonded to the inner wall of the bowl cup 20 without any gap.

[0033] Furthermore, the openings of the two adjacent annular grooves 22 face in opposite directions. By setting the opening directions of the two adjacent annular grooves 21 in opposite directions, the outer side of the fluorescent glue is fixed in a jagged pattern, and the fluorescent glue in the annular grooves 22 is restrained by each other, thereby further increasing the difficulty of separating the fluorescent glue from the bowl cup 20, so that the fluorescent glue and the bowl cup 20 are not easy to separate.

[0034] In addition, a white glue layer 40 and a silver-plated layer 50 are provided at the bottom of the groove 21. The white glue layer 40 is provided on the connecting piece 30, and the silver-plated layer 50 is provided on the bottom plate 10. In a specific implementation, a reflective layer is usually provided at the bottom of the bowl 20 to increase the brightness of the lamp beads. Since the materials of the bottom plate 10 and the connecting piece 30 are different, in order to ensure that the reflective layer can have a better combination effect with the bottom plate 10 and the connecting piece 30. Therefore, the reflective layer is provided as a white glue layer 40 and a silver-plated layer 50, and is provided on the connecting piece 30 and the bottom plate 10, respectively. In addition, since the reflective effect of the white glue layer 40 is better than that of the silver-plated layer 50, the connection piece 30 is provided, thereby providing the white glue layer 40, which also promotes the luminous effect of the lamp beads.

[0035] In addition, the fixing groove 23 is a step groove, and the width of the step at the bottom of the fixing groove 23 is greater than the width of the step at the top of the fixing groove 23. By setting the fixing groove 23 as a step groove, the connecting piece 30 in the fixing groove 23 is stepped, so that after the fluorescent glue is bonded to the connecting piece 30, when the fluorescent glue is separated in the opening direction of the groove 21, the separation force will act on the connecting piece 30. Since the connecting piece 30 is stepped and the bottom width is greater than the top width, the connecting piece 30 cannot be separated from the top of the fixing groove 23, thereby enhancing the anti-separation effect of the fluorescent glue.

[0036] Specifically, the side wall of the groove 21 is at a preset angle with the bottom plate 10, so that the cross-sectional area of ​​the groove 21 gradually increases from one side close to the bottom plate 10 to the other side. By setting the side wall of the groove 21 at an angle, the light-emitting angle of the lamp bead is increased, so that the irradiation area of ​​the lamp bead is larger, and the smooth inclined surface makes the flow of the fluorescent glue less obstructed, further speeding up the flow speed of the fluorescent glue, and preventing the fluorescent glue from creeping and other undesirable phenomena.

[0037] Furthermore, a transition fillet 24 is provided at the connection between the side walls of two adjacent grooves 21. The transition fillet 24 can also reduce the flow resistance of the fluorescent glue, thereby accelerating the flow speed of the fluorescent glue, avoiding the fluorescent glue from creeping, and ensuring a smooth glue surface.

[0038] See also Figure 3 , shown is the LED package bracket in the second embodiment of the utility model. The second embodiment is generally the same in structure as the first embodiment, except that the annular groove 22 includes a transverse groove portion 221 and a vertical groove portion 222 that are vertically connected to each other, and the vertical groove portion 222 is arranged on the side of the transverse groove portion 221 away from the inner wall of the bowl 20. By arranging the annular groove into two parts, the vertical groove portion 222 and the transverse groove portion 221, part of the fluorescent glue is stuck in the vertical groove portion after solidification, and cannot be detached from the vertical groove portion through the transverse groove portion, and the combination of the vertical groove portion, the transverse groove portion and the groove limits all the degrees of freedom of the fluorescent glue after solidification, greatly enhancing the bonding force between the fluorescent glue and the bowl. And such an arrangement can achieve the effect of setting a plurality of annular grooves, avoid the opening of a plurality of annular grooves, and reduce processing costs.

[0039] In summary, the LED packaging bracket in the above embodiment of the utility model, by opening a groove 21 on the bowl cup 20, the LED chip can be fixed in the bowl cup 20 and connected to the bottom plate 10, and then by opening an annular groove 22 on the inner wall of the groove 21, when the groove 21 is filled with fluorescent glue to achieve packaging, the fluorescent glue will enter the annular groove 22, thereby increasing the contact area between the fluorescent glue and the bowl cup 20, so that the adhesion between the fluorescent glue and the bowl cup 20 is stronger, and in addition, after the fluorescent glue solidifies, part of it is placed in the annular groove 22, so that the annular groove 22 clamps a part of the fluorescent glue, thereby strengthening the gripping force of the fluorescent glue. In addition, a fixing groove 23 is also set at the bottom of the groove 21, and a connecting member 30 is set in the fixing groove 23. By adjusting the material of the connecting member 30, the properties of the connecting member 30 and the fluorescent glue are close, thereby making the adhesion between the connecting member 30 and the fluorescent glue stronger, so that the adhesion between the fluorescent glue and the bracket is stronger. Therefore, the utility model solves the problem in the prior art that the fluorescent glue in the bracket is poorly combined with the wall of the bracket bowl or cup.

[0040] In addition, the utility model also provides an LED lamp bead, and the LED lamp bead includes the above-mentioned LED packaging bracket.

[0041] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0042] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. An LED packaging bracket, characterized in that: It includes a base plate and a bowl cup arranged on the base plate, the bowl cup is provided with a groove for placing an LED chip, the side wall of the groove is provided with an annular groove, the bottom of the groove is provided with a fixing groove, and a connecting piece is provided in the fixing groove, and the bonding force between the connecting piece and the fluorescent glue is greater than the bonding force between the base plate and the fluorescent glue.

2. The LED package bracket according to claim 1, characterized in that: The groove side wall is provided with a plurality of annular grooves, and the plurality of annular grooves are evenly distributed along the height direction of the bottom plate.

3. The LED package bracket according to claim 2, characterized in that: The cross-sectional areas of the plurality of annular grooves gradually decrease from one side close to the bottom plate to the other side.

4. The LED package bracket according to claim 2, characterized in that: The openings of two adjacent annular grooves face opposite directions.

5. The LED package bracket according to claim 1, characterized in that: A white glue layer and a silver-plated layer are provided at the bottom of the groove, the white glue layer is arranged on the connecting piece, and the silver-plated layer is arranged on the bottom plate.

6. The LED package bracket according to claim 1, characterized in that: The annular groove comprises a transverse groove portion and a vertical groove portion which are vertically connected to each other, and the vertical groove portion is arranged on a side of the transverse groove portion away from the inner wall of the bowl.

7. The LED package bracket according to claim 1, characterized in that: The fixing groove is a step groove, and the width of the step at the bottom of the fixing groove is greater than the width of the step at the top of the fixing groove.

8. The LED package bracket according to claim 1, characterized in that: The side wall of the groove forms a preset angle with the bottom plate, so that the cross-sectional area of ​​the groove gradually increases from one side close to the bottom plate to the other side.

9. The LED package bracket according to claim 1, characterized in that: A transition fillet is provided at the connection between the side walls of two adjacent grooves.

10. An LED lamp bead, characterized in that: The LED package bracket comprises the LED package bracket according to any one of claims 1 to 9.

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