Polycrystal packaging LED support

Abstract

The utility model discloses a polycrystal packaging LED support which is characterized in that the polycrystal packaging LED support comprises a cup body, and an opening of the cup body is in an inverted trapezoid shape; a substrate formed by splicing a plurality of parts is fixedly arranged at the bottom of the cup body, a plurality of bonding pads are arranged on the substrate, division bars are arranged among the plurality of bonding pads, a plurality of even number of die bonding positions are arranged on the bonding pads, and the plurality of die bonding positions are connected in parallel or in series; the opening of the cup body is rectangular in a top view, arc transition is adopted at the corner of the opening, and the bonding pad adopts a split structure, so that die bonding and heat dissipation in a bonding pad area are fully utilized, heat is effectively and quickly transferred to the substrate, adjacent bonding pads can be separated through the arrangement of the division bars, heat transfer and accumulation are avoided, heat dissipation is accelerated, and the service life of the bonding pad is prolonged. In addition, the extension window extending outwards is arranged at the side length position, so that the area for die bonding and wire bonding can be increased, the operation is convenient, the packaging of high-luminous-efficiency large wafers which cannot be realized by products with the same specification can be eliminated, and the popularization and application of the low-cost high-brightness bracket are realized.

Description

Technical Field

[0001] The utility model belongs to the technical field of LED packaging brackets, in particular to a multi-crystal packaging LED bracket. Background Art

[0002] The LED bracket is an important component for encapsulating LED lamp beads. The encapsulated LED bracket is an important component of the display. The more LED lamp beads a display has under the same size, the clearer the picture it presents. With the development of technology, LED brackets are becoming more and more miniaturized, and the displayed picture is becoming clearer and clearer. However, at present, only one LED lamp bead can be encapsulated on the LED bracket substrate. Therefore, the size of the LED bracket has become an important factor limiting the clarity and miniaturization of the display. Utility Model Content

[0003] The purpose of the utility model is to provide a multi-crystal packaged LED bracket to solve the problems raised in the above background technology.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A multi-crystal packaged LED bracket, characterized in that: it includes a cup body, the opening of the cup body is in an inverted trapezoidal shape; a base plate assembled from a plurality of parts is fixedly arranged at the bottom of the cup body, a plurality of welding pads are arranged on the base plate, a plurality of welding pads are provided with spacers between the plurality of welding pads, a plurality of even-numbered crystal fixing positions are arranged on the welding pads, and the plurality of crystal fixing positions are connected in parallel or in series; the opening of the cup body is rectangular when viewed from above, and an arc transition is adopted at the corner of the opening.

[0006] A further technical solution is that there are two crystal fixing positions, the two crystal fixing positions are connected in parallel, and an extended window extending outward is provided at the wide side of the cup body opening. The cup body opening is rectangular when viewed from above, and an arc transition is adopted at the opening corner.

[0007] According to a further technical solution, the cup body opening is rectangular when viewed from above, there are four crystal fixing positions, two of which are connected in series along the length direction, and two of which are connected in parallel along the width direction, and an extended window 2 extending outward is provided near the corner position along the length direction.

[0008] Beneficial effects of the utility model:

[0009] The soldering pad in the utility model adopts a split structure, so that the soldering pad area can be fully utilized for crystal bonding and heat dissipation, and the heat can be effectively and quickly transferred to the substrate. The adjacent soldering pads can be separated by the setting of partition bars to avoid mutual heat transfer and accumulation to accelerate heat dissipation. In addition, an expansion window extending outward is provided at the side length position, which can increase the area for crystal bonding and wire welding for convenient operation, and can also get rid of the packaging of high-light-efficiency large chips that cannot be achieved by products of the same specifications, and realize the promotion and application of low-cost high-brightness brackets.

[0010] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 : Three views of an implementation mode of the present utility model.

[0012] Figure 2 : Two or three views of the implementation mode of the utility model.

[0013] Figure numerals: 11 - cup body, 12 - opening, 13 - partition bar, 14 - arc transition, 15 - extension window one, 16 - extension window two, 21 - substrate, 22 - crystal bonding position, 23 - pin. DETAILED DESCRIPTION

[0014] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0015] Please refer to Figure 1-2 ;

[0016] The utility model provides an LED bracket that can package multiple LED lamp beads in one bracket. In addition, the LED bracket described in the utility model is a patch bracket, which can occupy as little volume as possible. From the appearance, the LED bracket is a rectangular parallelepiped as a whole, specifically including a cup body 11 and a base plate 21 fixed at the bottom of the body, wherein the outer circumference of the cup body 11 is 3.3mm-3.5mm in length and 2.7mm-2.9mm in width, and there are slight differences according to different models, thus It can be seen that the size of the LED bracket is very small. In addition, the opening 12 of the cup body 11 is in an inverted trapezoid. Furthermore, the upper bottom surface and the lower bottom surface of the inverted trapezoid are both rectangular. From the cross-sectional view, the length direction of the bottom is 2.3mm-2.8mm, the length direction of the top is 3mm-3.3mm, the angle of the opening 12 in the length direction is 80°-100°, the width direction of the bottom is 1.7mm-1.8mm, the width direction of the top is 2.5mm-2.6mm, and the angle of the opening 12 in the width direction is 100°-120°;

[0017] The bottom surface of the substrate 21 is provided with pins 23 connected to external devices, and the substrate 21 has a plurality of soldering pads, and partitions are provided between the plurality of soldering pads. A plurality of even-numbered solid crystal positions 22 are provided on the soldering pads. The even-numbered design can utilize space to the greatest extent. In this embodiment, the soldering pad adopts a split structure, so that the soldering pad area is fully utilized for solid crystal and heat dissipation, and the heat is effectively and quickly transferred to the substrate. The cup body 11 is formed by injection molding, and partitions 13 are formed between the plurality of soldering pads. Since the LED lamp beads generate heat when working, and the function of the substrate 21 must bear the heat dissipation function in addition to the conductive control, the adjacent soldering pads can be separated by the provision of the partitions 13 to avoid the mutual transfer and accumulation of heat. Finally, the plurality of solid crystal positions 22 are connected in series or in parallel. By providing a plurality of solid crystal positions 22, a plurality of LED lamp beads can be bonded in one LED bracket, thereby improving the utilization rate of the LED bracket and breaking the limitation of the LED bracket on the display clarity and miniaturization.

[0018] It should be noted that the pin 23 should distinguish between the positive pole and the negative pole. Assuming that there are two die-bonding positions 22, one of which is the positive pole and the other is the negative pole, the two die-bonding positions 22 are connected in parallel to light up the LED lamp bead.

[0019] Furthermore, the opening 12 of the cup body 11 is rectangular when viewed from above, and an arc transition 14 is used at the corner of the opening 12, wherein the arc transition can be a circular curve or an elliptical curve, etc., which can increase the crystal fixing and wire bonding area to facilitate operation, and at the same time is beneficial to reduce the reflection loss rate of the brightness at the corner and improve the uniformity of light emission. In addition, an extended window extending outward is provided at the side length position, which can get rid of the packaging of high-efficiency large chips that cannot be achieved by products of the same specifications, and realize the promotion and application of low-cost high-brightness brackets.

[0020] In the first embodiment of the present utility model, referring to Figure 1 There are two solid crystal positions 22. Preferably, the bottom length direction dimension of the opening 12 is 2.32 mm, the top length direction is 3.02 mm, the length direction opening 12 angle is 105°, the bottom width direction dimension is 1.7 mm, the top width direction is 2.5 mm, the width direction opening 12 angle is 112°, the two solid crystal positions 22 are connected in parallel, and an outwardly extending expansion window 15 is provided at the wide side of the opening 12 of the cup body 11. By setting the expansion window 15, the expansion window 15 can be elliptical, semicircular or square, which can increase the area of ​​solid crystal and welding wire for convenient operation, and further increase the light-emitting angle and reduce reflectivity.

[0021] In the second embodiment of the present utility model, referring to Figure 2The cup body opening is rectangular when viewed from above, and there are four solid crystal positions 22. Preferably, the bottom length direction dimension of the opening 12 is 2.76mm, the top length direction is 3.28mm, the length direction opening 12 angle is 82°, the bottom width direction dimension is 1.8mm, the top width direction is 2.58mm, the width direction opening 12 angle is 106°, the two solid crystal positions 22 along the length direction are connected in series, and the two solid crystal positions 22 along the width direction are connected in parallel. An extended window 2 16 extending outward is provided near the corner position along the length direction. It should be noted that the two ends in the length direction are respectively connected to the two wide sides, so each day side length is provided with two extended windows 2 16, and the extended window 2 16 can be elliptical, semicircular or square, which can increase the area of ​​solid crystal and welding wire for convenient operation, and further increase the light-emitting angle and reduce reflectivity.

[0022] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0023] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementations that can be understood by those skilled in the art.

Claims

1. A multi-crystal packaged LED bracket, characterized in that: The invention comprises a cup body (11), wherein the opening (12) of the cup body (11) is in the shape of an inverted trapezoid; a base plate (21) assembled from a plurality of parts is fixedly arranged at the bottom of the cup body (11); a plurality of solder pads are arranged on the base plate (21); a plurality of partition bars are arranged between the solder pads; a plurality of even-numbered crystal fixing positions (22) are arranged on the solder pads; the plurality of crystal fixing positions (22) are connected in parallel or in series; the opening (12) of the cup body (11) is rectangular in a top view, and an expansion window extending outward is arranged at the side length position.

2. The multi-crystal packaged LED bracket according to claim 1, characterized in that: An expansion window (15) extending outward is provided at the wide side of the opening (12) of the cup body (11), and an arc transition (14) is adopted at the corner of the opening (12).

3. The multi-crystal packaged LED bracket according to claim 1, characterized in that: The opening (12) of the cup body (11) is rectangular in plan view, and is provided with an outwardly extending expansion window (16) near a corner along the length direction.

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