Two-in-one LED lamp bead and preparation method thereof

Abstract

The invention discloses a two-in-one LED lamp bead and a preparation method thereof, and the two-in-one LED lamp bead comprises a support terminal, a plurality of LED lamp beads and a plurality of LED lamp beads, the support terminal comprises a first lamp bead terminal, a second lamp bead terminal and a reinforcing terminal located between the first lamp bead terminal and the second lamp bead terminal. The first lamp bead terminal and the second lamp bead terminal are arranged along a first direction; the reinforcing terminal is located between the first lamp bead terminal and the second lamp bead terminal and extends in the second direction. The first direction and the second direction intersect. According to the technical scheme, the thrust of the LED display screen lamp bead pins can be increased, the problem that the LED display screen lamp bead pins fall off in the transportation or installation and disassembly process is solved, and therefore the reliability of the LED display screen can be improved, and the maintenance cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of LED display screens, and in particular to a two-in-one LED lamp bead and a preparation method thereof. Background Art

[0002] With the continuous advancement of technology and the gradual maturity of the market, the LED rental display industry is welcoming more development opportunities. LED rental displays are mainly used in large-scale cultural performances, major sports events, high-end conferences and large exhibitions, and with the outbreak of small-pitch (lamp bead spacing P≤2.6mm) rental screens, the LED rental display market is expanding to more fields. Overall, small-pitch rental screens will be the key product of the LED rental market in the next 3-5 years. The future development and prosperity of the LED rental market mainly depends on the technical maturity and cost control of small-pitch products.

[0003] At present, the small-pitch rental screens on the market mainly adopt single-lamp product solutions and four-in-one product solutions. However, single-lamp products have certain limitations in their actual application. Due to product size restrictions, their design pin size is small, resulting in a pin thrust of about 1.3~1.6kg; the standard thrust of the rental product lamp beads is about 4kg~7kg. In order to increase the thrust of the lamp beads, an additional mask is required on the P2.6 dot pitch to enhance the protection performance of the LED device and avoid the problem of the LED rental display falling off due to external forces during transportation, installation, and disassembly, thereby increasing costs.

[0004] The four-in-one product is designed with multiple pins and has the characteristics of large thrust, which is suitable for rental product applications. However, due to the design of integrating multiple lamp beads into one, it has problems such as poor display effect, appearance consistency, low yield and high cost, and cannot be widely accepted by the market. Summary of the invention

[0005] The present invention provides a two-in-one LED lamp bead and a preparation method thereof to solve the problems existing in the prior art, thereby increasing the thrust of the LED display lamp bead pins to prevent the lamp from falling off during transportation or installation and disassembly, thereby improving the reliability of the LED display and reducing maintenance costs.

[0006] In a first aspect, the present invention provides a two-in-one LED lamp bead, comprising: a bracket terminal; The bracket terminal includes a first lamp bead terminal, a second lamp bead terminal, and a reinforcement terminal located between the first lamp bead terminal and the second lamp bead terminal; The first lamp bead terminal and the second lamp bead terminal are arranged along a first direction; the reinforcement terminal is located between the first lamp bead terminal and the second lamp bead terminal, and the reinforcement terminal extends along a second direction; the first direction and the second direction intersect.

[0007] Optionally, the reinforcement terminal includes a first pin, a second pin and a pin reinforcement portion; Two opposite ends of the pin reinforcement portion along the second direction are respectively connected to the first pin and the second pin; the pin reinforcement portion is used to reinforce the first pin and the second pin.

[0008] Optionally, the pin reinforcement portion is serrated on two opposite sides along the first direction.

[0009] Optionally, the first lamp bead terminal includes a first red light functional area, a first green light functional area, a first blue light functional area, a first welding wire functional area, a third pin, a fourth pin, a fifth pin and a sixth pin; The first red light functional area is connected to the third pin; the first green light functional area is connected to the fourth pin; the first blue light functional area is connected to the fifth pin; and the first welding wire functional area is connected to the sixth pin.

[0010] Optionally, the second lamp bead terminal includes a second red light functional area, a second green light functional area, a second blue light functional area, a second welding wire functional area, a seventh pin, an eighth pin, a ninth pin and a tenth pin; The second red light functional area is connected to the seventh pin; the second green light functional area is connected to the eighth pin; the second blue light functional area is connected to the ninth pin; and the second bonding wire functional area is connected to the tenth pin.

[0011] Optionally, the two-in-one LED lamp bead further includes: a first bowl cup, a second bowl cup and a lamp bead beam wrapping the bracket terminal; The first bowl cup covers the first lamp bead terminal; the second bowl cup covers the second lamp bead terminal; and the lamp bead cross beam covers the reinforcement terminal.

[0012] Optionally, the thickness T1 of the lamp bead beam in the third direction has a value range of: 0.6mm≤T1≤0.65mm; the difference ΔT between the thickness T1 of the lamp bead beam and the thickness T2 of the cup mouth of the first bowl cup in the third direction has a value range of: 0.35mm≤ΔT≤0.38mm; the third direction is perpendicular to the first direction and the second direction.

[0013] Optionally, the first bowl cup, the second bowl cup and the lamp bead beam are formed by an injection molding process; When forming the first bowl cup, the second bowl cup and the lamp bead cross beam, a protruding structure is used to support the reinforcing terminal.

[0014] Optionally, the two-in-one LED lamp bead further includes: a first lamp bead and a second lamp bead. The first lamp bead includes a first red light chip, a first green light chip, and a first blue light chip; the second lamp bead includes a second red light chip, a second green light chip, and a second blue light chip. The first red light chip and the second red light chip are vertical structure chips; the first green light chip, the second green light chip, the first blue light chip, and the second blue light chip are horizontal structure chips.

[0015] Optionally, the negative electrode of the first red light chip is fixed to the first red light functional area through conductive adhesive; the first green light chip is fixed to the first green light functional area through insulating adhesive; the first blue light chip is fixed to the first blue light functional area through insulating adhesive; the negative electrode of the first green light chip is connected to the first green light functional area through a bonding wire; the negative electrode of the first blue light chip is connected to the first blue light functional area through a bonding wire. The negative electrode of the second red light chip is fixed to the second red light functional area through conductive adhesive; the second green light chip is fixed to the second green light functional area through insulating adhesive; the second blue light chip is fixed to the second blue light functional area through insulating adhesive; the negative electrode of the second green light chip is connected to the second green light functional area through a bonding wire; the negative electrode of the second blue light chip is connected to the second blue light functional area through a bonding wire. The positive electrodes of the first red light chip, the first green light chip, and the first blue light chip are respectively connected to the first wire bonding functional area through bonding wires; the positive electrodes of the second red light chip, the second green light chip, and the second blue light chip are respectively connected to the second wire bonding functional area through bonding wires.

[0016] In a second aspect, the present invention further provides a preparation method for a two-in-one LED lamp bead, which is used to prepare the two-in-one LED lamp bead described in any one of the above, including: According to the design drawing, form a bracket terminal through a stamping process. The bracket terminal includes a first lamp bead terminal, a second lamp bead terminal, and a strengthening terminal located between the first lamp bead terminal and the second lamp bead terminal. The first lamp bead terminal and the second lamp bead terminal are arranged along a first direction; the strengthening terminal is located between the first lamp bead terminal and the second lamp bead terminal, and the strengthening terminal extends along a second direction; the first direction and the second direction intersect. Place the bracket terminal into an injection mold, and through an injection process, form a first bowl cup, a second bowl cup, and a lamp bead cross beam. The first bowl cup covers the first lamp bead terminal; the second bowl cup covers the second lamp bead terminal; the lamp bead cross beam covers the strengthening terminal. Bend the injection-molded bracket terminal to form the bracket terminal of the two-in-one LED lamp bead; Provide the first lamp bead and the second lamp bead, and connect the first lamp bead and the second lamp bead at corresponding positions.

[0017] In the technical solution of the present invention, the bracket terminal of the two-in-one LED lamp bead includes a first lamp bead terminal, a second lamp bead terminal, and a strengthening terminal located between the first lamp bead terminal and the second lamp bead terminal. The first lamp bead terminal is used to mount the first lamp bead, and the second lamp bead terminal is used to mount the second lamp bead; the strengthening terminal is used to enhance the pin strength of the LED bracket. By arranging the first lamp bead terminal and the second lamp bead terminal along the first direction, the strengthening terminal is located between the first lamp bead terminal and the second lamp bead terminal, and the strengthening terminal extends along the second direction, where the first direction and the second direction intersect, so that the strengthening terminal, the first lamp bead terminal, and the second lamp bead terminal are all bonded to the module substrate, thereby increasing the bonding area between the bracket terminal of the LED lamp bead and the module substrate, and thus being able to increase the thrust of the LED display screen. In this way, it is possible to prevent the problem of lamp dropping during the transportation, installation, or disassembly of the LED display screen, so that the LED display screen module cannot work properly, enabling the LED display screen to present a more perfect display effect, which is beneficial to improving the viewing experience of customers. At the same time, it can reduce the maintenance cost.

[0018] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present invention, nor is it used to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0020] Figure 1 It is a schematic structural diagram of a bracket terminal of a two-in-one LED lamp bead provided by an embodiment of the present invention;

[0021] Figure 2 It is a front structural diagram of a two-in-one LED lamp bead provided by an embodiment of the present invention;

[0022] Figure 3 It is a side structural diagram of a two-in-one LED lamp bead provided by an embodiment of the present invention;

[0023] Figure 4 It is a back structural diagram of a two-in-one LED lamp bead provided by an embodiment of the present invention;

[0024] Figure 5 Front view of the core of the injection mold for the two-in-one LED lamp bead provided by the embodiment of the present invention;

[0025] Figure 6 Front view of the rear mold core of the injection mold for the two-in-one LED lamp bead provided by the embodiment of the present invention;

[0026] Figure 7 Front view of the front mold core of the injection mold for the two-in-one LED lamp bead provided by the embodiment of the present invention;

[0027] Figure 8 Top view of a partial structure of the front mold core of the injection mold for the two-in-one LED lamp bead provided by the embodiment of the present invention;

[0028] Figure 9 Data comparison chart of the thrust values of three types of LED lamp beads provided by the embodiment of the present invention. Detailed implementation manners

[0029] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0030] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily need to describe a specific order or sequence. It should be understood that such used data can be interchanged under appropriate circumstances so that the embodiments of the present invention described herein can be implemented in an order different from those illustrated or described herein.

[0031] Figure 1 Structural schematic diagram of a bracket terminal of a two-in-one LED lamp bead provided by an embodiment of the present invention. This embodiment provides a two-in-one LED lamp bead. Refer to Figure 1 As shown, the two-in-one LED lamp bead includes: a bracket terminal 1; the bracket terminal 1 includes a first lamp bead terminal 10, a second lamp bead terminal 20, and a strengthening terminal 30 located between the first lamp bead terminal 10 and the second lamp bead terminal 20; the first lamp bead terminal 10 and the second lamp bead terminal 20 are arranged along a first direction L1; the strengthening terminal 30 is located between the first lamp bead terminal 10 and the second lamp bead terminal 20, and the strengthening terminal 30 extends along a second direction L2. Among them, the first direction L1 and the second direction L2 intersect.

[0032] Among them, the bracket terminal 1 is used to bond the LED lamp beads to the module substrate. The first lamp bead terminal 10 is used to mount the first lamp bead, and the second lamp bead terminal 20 is used to mount the second lamp bead. The first lamp bead terminal 10 and the second lamp bead terminal 20 are bonded to the module substrate through pins. The strengthening terminal 30 is also bonded to the module substrate through pins, which is used to enhance the pin strength of the bracket terminal 1 of the LED lamp beads, so as to prevent the problem of lamp dropping during the transportation or installation and disassembly of the LED display screen, which may cause the LED display module to malfunction.

[0033] The first lamp bead terminal 10 and the second lamp bead terminal 20 are arranged along the first direction L1, so that when a plurality of two-in-one LED lamp beads are bonded to the module substrate, each LED lamp bead can form a lamp bead array, thus ensuring the display effect. The strengthening terminal 30 is arranged between the first lamp bead terminal 10 and the second lamp bead terminal 20, so that the strengthening terminal 30 is located at the middle position of the two-in-one LED lamp bead, thereby being able to evenly enhance the pin strength of the bracket of the two-in-one LED lamp bead.

[0034] The intersection of the first direction L1 and the second direction L2 may include an acute angle, a right angle or an obtuse angle between the first direction L1 and the second direction L2. In an exemplary embodiment, a right angle is formed between the first direction L1 and the second direction L2, so as to maximize the enhancement of the pin strength of the LED bracket. At the same time, the preparation difficulty of the bracket terminal 1 can be reduced.

[0035] In this embodiment, the bracket terminal of the two-in-one LED lamp bead includes a first lamp bead terminal, a second lamp bead terminal and a strengthening terminal located between the first lamp bead terminal and the second lamp bead terminal. The first lamp bead terminal is used to mount the first lamp bead, and the second lamp bead terminal is used to mount the second lamp bead; the strengthening terminal is used to enhance the pin strength of the LED bracket. By arranging the first lamp bead terminal and the second lamp bead terminal along the first direction, the strengthening terminal is located between the first lamp bead terminal and the second lamp bead terminal, and the strengthening terminal extends along the second direction, where the first direction and the second direction intersect, so that the strengthening terminal, the first lamp bead terminal and the second lamp bead terminal are all bonded to the module substrate, thereby increasing the bonding area between the bracket terminal of the LED lamp bead and the module substrate, and thus being able to increase the thrust of the LED display screen. In this way, the problem of lamp dropping during the transportation or installation and disassembly of the LED display screen, which may cause the LED display module to malfunction, can be prevented, enabling the LED display screen to present a more perfect display effect, which is beneficial to improving the viewing experience of customers. At the same time, the maintenance cost can be reduced.

[0036] Optionally, continue to refer to Figure 1As shown, the strengthening terminal 30 includes a first pin 31, a second pin 32, and a pin strengthening portion 33. The opposite ends of the pin strengthening portion 33 along the second direction L2 are respectively connected to the first pin 31 and the second pin 32. The pin strengthening portion 33 is used to strengthen the first pin 31 and the second pin 32.

[0037] Among them, the first pin 31 and the second pin 32 are used to be bonded to the module substrate to improve the pin strength of the two-in-one LED lamp bead bracket. The opposite ends of the pin strengthening portion 33 along the second direction L2 are respectively connected to the first pin 31 and the second pin 32 to strengthen the strength of the first pin 31 and the second pin 32, thereby preventing the first pin 31 and the second pin 32 from detaching from the bracket terminal 1 under the action of thrust, and further improving the pin strength of the two-in-one LED lamp bead bracket.

[0038] Optionally, continue to refer to Figure 1 As shown, the opposite sides of the pin strengthening portion 33 along the first direction L1 are serrated.

[0039] Specifically, the opposite sides of the pin strengthening portion 33 along the first direction L1, that is, the two sides respectively facing the first lamp bead terminal 10 and the second lamp bead terminal 20. By making the opposite sides of the pin strengthening portion 33 along the second direction L2 serrated, since there is plastic above the pin strengthening portion 33 after injection molding, the bonding force between the plastic and the pin strengthening portion 33 is increased, thereby further strengthening the strength of the first pin 31 and the second pin 32.

[0040] Optionally, Figure 2 is a front view structural diagram of the two-in-one LED lamp bead provided by the embodiment of the present invention. Figure 3 is a side view structural diagram of the two-in-one LED lamp bead provided by the embodiment of the present invention. Figure 4 is a rear view structural diagram of the two-in-one LED lamp bead provided by the embodiment of the present invention. Refer to Figures 2 - 4 As shown, the two-in-one LED lamp bead further includes: a first bowl cup 4, a second bowl cup 5, and a lamp bead cross beam 6 that wrap the bracket terminal 1. The first bowl cup 4 covers the first lamp bead terminal 10, the second bowl cup 5 covers the second lamp bead terminal 20, and the lamp bead cross beam 6 covers the strengthening terminal 30, so that the bracket terminal 1 of the two-in-one LED lamp bead can be wrapped by plastic, thereby preventing the bracket terminal 1 from being oxidized.

[0041] Among them, the first bowl cup 4, the second bowl cup 5, and the lamp bead cross beam 6 are integrally formed. In an exemplary embodiment, the first bowl cup 4, the second bowl cup 5, and the lamp bead cross beam 6 are formed by an injection molding process. The first bowl cup 4 is used to mount the first red light chip, the first green light chip, and the first blue light chip on the first lamp bead terminal 10, and the second bowl cup 5 is used to mount the second red light chip, the second green light chip, and the second blue light chip on the second lamp bead terminal 20.

[0042] Optional, continue to refer to Figures 2 - 4 As shown, the thickness T1 of the lamp bead beam 6 in the third direction L3 has a value range of 0.6mm≤T1≤0.65mm, and the difference ΔT between the thickness T1 of the lamp bead beam 6 and the thickness T2 of the cup mouth of the first bowl cup 4 in the third direction L3 has a value range of 0.35mm≤ΔT≤0.38mm.

[0043] The third direction L3 is perpendicular to the first direction L1 and the second direction L2, and is the thickness direction of the two-in-one LED lamp bead.

[0044] It is understandable that the minimum thickness of the lamp bead mask is 0.5mm, and the thickness requirement of the lamp bead mask is T≤0.15mm, so as to meet the requirements of the lamp surface angle, thereby meeting the display effect. By making the thickness T1 of the lamp bead beam 6 in the third direction L3 meet 0.6mm≤T1≤0.65mm, the difference ΔT between the thickness T1 of the lamp bead beam 6 and the thickness T2 of the cup mouth of the first bowl 4 in the third direction L3 meets 0.35mm≤ΔT≤0.38mm, so as to meet the requirements of the thickness and height of the lamp bead mask.

[0045] Optional, Figure 5 A front view of a core of an injection mold for a two-in-one LED lamp bead provided in an embodiment of the present invention, Figure 6 A front view of the rear mold core of the injection mold for the two-in-one LED lamp bead provided in an embodiment of the present invention, Figure 7 A front view of the front mold core of the injection mold for the two-in-one LED lamp bead provided in an embodiment of the present invention, Figure 8 A top view of a partial structure of the front mold core of the injection mold for the two-in-one LED lamp bead provided in an embodiment of the present invention, with reference to Figures 5 - 8 As shown, the first cup 4, the second cup 5 and the lamp bead beam 6 are formed by an injection molding process; when the first cup 4, the second cup 5 and the lamp bead beam 6 are formed, a protruding structure a is used to support the reinforcing terminal 30.

[0046] Among them, the first bowl cup 4, the second bowl cup 5 and the lamp bead beam 6 are formed by an injection molding process using an injection mold. Specifically, the bracket terminal 1 of the two-in-one LED lamp bead is placed in the injection mold, and the melted plastic particles are controlled to be fed simultaneously from the first glue feeding point b and the second glue feeding point c of the front mold core, so that the plastic fills the entire cavity of the injection mold to form the first bowl cup 4, the second bowl cup 5 and the lamp bead beam 6.

[0047] It should be noted that a protruding structure a is provided at a position corresponding to the reinforcing terminal 30 in the rear mold core of the injection mold, so that during the injection molding process, the protruding structure a can support the reinforcing terminal 30. Specifically, the protruding structure a supports the pin reinforcing portion 33 of the reinforcing terminal 30 to prevent the pin reinforcing portion 33 from being punched up under the impact force of the plastic, thereby making it impossible for the pin reinforcing portion 33 to play a role in reinforcing the strength of the first pin 31 and the second pin 32, thereby resulting in poor strength of the first pin 31 and the second pin 32. Therefore, by using a protruding structure a to support the reinforcing terminal 30, the strength of the first pin 31 and the second pin 32 can be improved, thereby further improving the thrust of the two-in-one LED lamp bead.

[0048] In an optional embodiment, the two-in-one LED lamp bead includes a first lamp bead 01 and a second lamp bead 02, the first lamp bead includes a first red light chip 011, a first green light chip 012 and a first blue light chip 013, and the second lamp bead includes a second red light chip 021, a second green light chip 022 and a second blue light chip 023.

[0049] Optional, continue to refer to Figure 1 As shown, the first lamp bead terminal 10 includes a first red light functional area 11, a first green light functional area 12, a first blue light functional area 13, a first welding wire functional area 14, a third pin 15, a fourth pin 16, a fifth pin 17 and a sixth pin 18; the first red light functional area 11 is connected to the third pin 15; the first green light functional area 12 is connected to the fourth pin 16; the first blue light functional area 13 is connected to the fifth pin 17; the first welding wire functional area 14 is connected to the sixth pin 18.

[0050] The first red light functional area 11 is used to place the first red light chip 011, and the first red light functional area 11 is connected to the third pin 15, so that the first red light functional area 11 can be electrically connected to the third pin 15. Similarly, the first green light functional area 12 is used to place the first green light chip 012, and the first green light functional area 12 is connected to the fourth pin 16, so that the first green light functional area 12 can be electrically connected to the fourth pin 16. The first blue light functional area 13 is used to place the first blue light chip 013, and the first blue light functional area 13 is electrically connected to the fifth pin 17, so that the first blue light functional area 13 can be electrically connected to the fifth pin 17. The first welding wire functional area 14 is connected to the sixth pin 18, and the bonding wire connecting the positive poles of each chip is welded to the first welding wire functional area 14, so that the positive poles of each chip in the first lamp bead terminal 10 can be electrically connected to the sixth pin 18.

[0051] In an alternative embodiment, the first green light functional area 12 is multiplexed as the first green light wire bonding area, and the first blue light functional area 13 is multiplexed as the first blue light wire bonding area, such that the negative electrode of the first green light chip 012 is welded to the first green light wire bonding area via a bonding wire, and thus the negative electrode of the first green light chip 012 is electrically connected to the fourth pin 16, and the negative electrode of the first blue light functional area 13 is welded to the first blue light wire bonding area via a bonding wire, and thus the negative electrode of the first blue light chip 013 is electrically connected to the fifth pin 17.

[0052] Optionally, with continued reference to Figure 1 as shown, the second lamp terminal 20 includes a second red light functional area 21, a second green light functional area 22, a second blue light functional area 23, a second wire bonding functional area 24, a seventh pin 25, an eighth pin 26, a ninth pin 27, and a tenth pin 28; the second red light functional area 21 is connected to the seventh pin 25; the second green light functional area 22 is connected to the eighth pin 26; the second blue light functional area 23 is connected to the ninth pin 27; and the second wire bonding functional area 24 is connected to the tenth pin 28.

[0053] The second lamp terminal 20 is similar to the first lamp terminal 10. The second red light functional area 21 of the second lamp terminal 20 is for placing the second red light chip 021, and the second red light functional area 21 is connected to the seventh pin 25, such that the second red light functional area 21 can be electrically connected to the seventh pin 25. The second green light functional area 22 is for placing the second green light chip 022, and the second green light functional area 22 is connected to the eighth pin 26, such that the second green light functional area 22 can be electrically connected to the eighth pin 26. The second blue light functional area 23 is for placing the second blue light chip 023, and the second blue light functional area 23 is electrically connected to the ninth pin 27, such that the second blue light functional area 23 can be electrically connected to the ninth pin 27. The second wire bonding functional area 24 is connected to the tenth pin 28. By welding the bonding wires connecting the electrodes of the chips in the second lamp terminal 20 to the second wire bonding functional area 24, the positive electrodes of the respective chips can be electrically connected to the tenth pin 28.

[0054] In an alternative embodiment, the second green light functional area 22 is multiplexed as the second green light wire bonding area, and the second blue light functional area 23 is multiplexed as the second blue light wire bonding area, such that the electrode of the second green light chip 022 is welded to the second green light wire bonding area via a bonding wire, and thus the electrode of the second green light chip 022 is electrically connected to the eighth pin 26, and the negative electrode of the second blue light functional area 23 is welded to the second blue light wire bonding area via a bonding wire, and thus the negative electrode of the second blue light chip 023 is electrically connected to the ninth pin 27.

[0055] Optionally, the first red light-emitting chip 011 and the second red light-emitting chip 021 are vertical structure chips, and the first green light-emitting chip 012, the second green light-emitting chip 022, the first blue light-emitting chip 013 and the second blue light-emitting chip 023 are horizontal structure chips, so as to improve the light-emitting efficiency of red light in the first lamp bead and the second lamp bead. At the same time, the reliability of the first lamp bead can be improved.

[0056] Optionally, the negative electrode of the first red light-emitting chip 011 is fixed to the first red light function area 11 through a conductive adhesive such as silver adhesive, the first green light-emitting chip 012 is fixed to the first green light function area 12 through an insulating adhesive, the first blue light-emitting chip 013 is fixed to the first blue light function area 13 through an insulating adhesive, the negative electrode of the second red light-emitting chip 021 is fixed to the second red light function area 21 through a conductive adhesive, the second green light-emitting chip 022 is fixed to the second green light function area 22 through an insulating adhesive, and the second blue light-emitting chip 023 is fixed to the second blue light function area 23 through an insulating adhesive, so as to improve the heat dissipation capacity and lifespan of the first red light-emitting chip 011 and the second red light-emitting chip 021, and further improve the reliability and stability of the two-in-one LED lamp bead.

[0057] In an optional embodiment, the negative electrode of the first green light-emitting chip 012 is connected to the first green light function area 12 through a bonding wire; the negative electrode of the first blue light-emitting chip 013 is connected to the first blue light function area 13 through a bonding wire; the negative electrode of the second green light-emitting chip 022 is connected to the second green light function area 22 through a bonding wire, and the negative electrode of the second blue light-emitting chip 023 is connected to the second blue light function area 23 through a bonding wire; the positive electrodes of the first red light-emitting chip 011, the first green light-emitting chip 012 and the first blue light-emitting chip 013 are respectively connected to the first wire bonding function area 14 through bonding wires, and the positive electrodes of the second red light-emitting chip 021, the second green light-emitting chip 022 and the second blue light-emitting chip 023 are respectively connected to the second wire bonding function area 24 through bonding wires.

[0058] Among them, since the first green light functional area 12 is connected to the fourth pin 16, the first blue light functional area 13 is connected to the fifth pin 17, and the first wire bonding functional area 14 is connected to the sixth pin 18, the negative electrode of the first green light chip 012 is connected to the fourth pin 16 through the first green light functional area 12, the negative electrode of the first blue light chip 013 is connected to the fifth pin 17 through the first blue light functional area 13, and the positive electrodes of the first red light chip 011, the first green light chip 012, and the first blue light chip 013 are connected to the sixth pin 18 through the first wire bonding functional area 14. That is to say, the first green light chip 012 and the first blue light chip 013 are respectively fixed in the independent first green light functional area 12 and the first blue light functional area 13, so that the negative electrode pads of the first red light chip 011, the first green light chip 012, and the first blue light chip 013 exist independently and are not connected. In this way, when electron migration occurs at the negative electrodes of the first green light chip 012 and the first blue light chip, it can be avoided that the negative electrode pads of the first red light chip 011, the first green light chip 012, and the first blue light chip are conducted, and the first green light chip 012 and the first blue light chip form a negative-negative short circuit phenomenon, thereby avoiding the appearance of green light dark spots or blue light dark spots, and further eliminating the problem of green-red or blue-red crosstalk.

[0059] Similarly, since the structure of the second lamp bead is the same as that of the first lamp bead, the second lamp bead also has the above beneficial effects. The same parts can be referred to the above description and will not be repeated here.

[0060] Figure 9 This is a comparison chart of the thrust values of three LED lamp beads provided by the embodiments of the present invention. Refer to Figure 9 As shown, by performing thrust tests on the prepared two-in-one LED lamp bead, the existing eight-pin two-in-one LED lamp bead, and the existing four-pin LED lamp bead through an automatic thrust machine, where the lifting height of the push knife of the automatic thrust machine is 500 μm, the forward speed of the push knife is 50 μm / s, and the forward distance is 400 μm, it can be found that the pin thrust value of the two-in-one LED lamp bead provided by this embodiment is the largest, reaching 4.44 Kgf. Compared with the eight-pin two-in-one LED lamp bead, the pin thrust of the two-in-one LED lamp bead provided by this embodiment is increased by 22%; compared with the four-pin LED lamp bead, the pin thrust of the two-in-one LED lamp bead provided by this embodiment is increased by 177%. It can be seen that the two-in-one LED lamp bead provided by this embodiment has a large pin thrust, can improve the anti-collision ability, and effectively solve the problem of lamp dropping due to small thrust during the installation and transportation of the rental display screen.

[0061] Based on the same concept, this embodiment also provides a preparation method for a two-in-one LED lamp bead, which is used to prepare the two-in-one LED lamp bead provided in any of the above embodiments. The preparation method includes: S10. Form the bracket terminal by a stamping process according to the design drawing.

[0062] The bracket terminal 1 includes a first lamp bead terminal 10, a second lamp bead terminal 20, and a reinforcement terminal 30 located between the first lamp bead terminal 10 and the second lamp bead terminal 20; the first lamp bead terminal 10 and the second lamp bead terminal 20 are arranged along a first direction L1; the reinforcement terminal 30 is located between the first lamp bead terminal 10 and the second lamp bead terminal 20, and the reinforcement terminal 30 extends along a second direction L2; the first direction L1 and the second direction L2 intersect.

[0063] S20, placing the bracket terminal into the injection mold, and forming the first bowl cup, the second bowl cup and the lamp bead beam through the injection molding process.

[0064] The first bowl cup 4 covers the first lamp bead terminal 10 ; the second bowl cup 5 covers the second lamp bead terminal 20 ; and the lamp bead cross beam 6 covers the reinforcement terminal 30 .

[0065] In an optional embodiment, when forming the first bowl cup 4, the second bowl cup 5 and the lamp bead cross beam 6, a protruding structure is used to support the reinforcing terminal 30. Exemplarily, a protruding structure is set at a position corresponding to the reinforcing terminal 30 in the rear mold core of the injection mold, so that during the injection molding process, the protruding structure can support the reinforcing terminal 30. Specifically, the protruding structure supports the pin reinforcing portion 33 of the reinforcing terminal 30 to prevent the pin reinforcing portion 33 from being punched up under the impact of the plastic, so that the pin reinforcing portion 33 cannot play a role in strengthening the strength of the first pin 31 and the second pin 32, thereby resulting in poor strength of the first pin 31 and the second pin 32. Therefore, by using a protruding structure to support the reinforcing terminal 30, the strength of the first pin 31 and the second pin 32 can be improved, thereby further improving the thrust of the two-in-one LED lamp bead.

[0066] S30, bending the injection-molded bracket terminal to form a bracket terminal of the two-in-one LED lamp bead.

[0067] S40, providing a first lamp bead and a second lamp bead, and connecting the first lamp bead and the second lamp bead at corresponding positions.

[0068] The first lamp bead includes a first red light chip 011 , a first green light chip 012 and a first blue light chip 013 , and the second lamp bead includes a second red light chip 021 , a second green light chip 022 and a second blue light chip 023 .

[0069] In an alternative embodiment, the negative electrode of the first red light chip 011 is fixed to the first red light functional area 11 through a conductive adhesive, the first green light chip 012 is fixed to the first green light functional area 12 through an insulating adhesive, the first blue light chip 013 is fixed to the first blue light functional area 13 through an insulating adhesive, the negative electrode of the second red light chip 021 is fixed to the second red light functional area 21 through a conductive adhesive, the second green light chip 022 is fixed to the second green light functional area 22 through an insulating adhesive, and the second blue light chip 023 is fixed to the second blue light functional area 23 through an insulating adhesive. The negative electrode of the first green light chip 012 is connected to the first green light functional area 12 through a bonding wire; the negative electrode of the first blue light chip 013 is connected to the first blue light functional area 13 through a bonding wire; the negative electrode of the second green light chip 022 is connected to the second green light functional area 22 through a bonding wire, and the negative electrode of the second blue light chip 023 is connected to the second blue light functional area 23 through a bonding wire; the positive electrodes of the first red light chip 011, the first green light chip 012, and the first blue light chip 013 are respectively connected to the first wire bonding functional area 14 through bonding wires, and the positive electrodes of the second red light chip 021, the second green light chip 022, and the second blue light chip 023 are respectively connected to the second wire bonding functional area 24 through bonding wires, thereby avoiding the occurrence of green light dark spots or blue light dark spots, and further eliminating the problem of green-red or blue-red crosstalk.

[0070] In this embodiment, the support terminal includes a first lamp terminal, a second lamp terminal, and a strengthening terminal located between the first lamp terminal and the second lamp terminal. The first lamp terminal is used to mount the first lamp, and the second lamp terminal is used to mount the second lamp; the strengthening terminal is used to enhance the pin strength of the LED support. By arranging the first lamp terminal and the second lamp terminal along a first direction, the strengthening terminal is located between the first lamp terminal and the second lamp terminal, and the strengthening terminal extends along a second direction, where the first direction and the second direction intersect, such that the strengthening terminal, the first lamp terminal, and the second lamp terminal are all bonded to the module substrate, thereby increasing the bonding area between the support terminal of the LED lamp bead and the module substrate, and thus being able to increase the thrust of the LED display screen. In this way, it is possible to prevent the problem of lamp dropout during the transportation, installation, or disassembly of the LED display screen, which may cause the LED display screen module to malfunction, enabling the LED display screen to present a more perfect display effect, which is beneficial to improving the customer's viewing experience. At the same time, the maintenance cost can be reduced.

[0071] The above specific embodiments do not constitute a limitation on the protection scope of the present invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A two-in-one LED lamp bead, characterized in that, include: Bracket terminal; The bracket terminal includes a first lamp bead terminal, a second lamp bead terminal, and a reinforcement terminal located between the first lamp bead terminal and the second lamp bead terminal; The first lamp bead terminal and the second lamp bead terminal are arranged along a first direction; the reinforcement terminal is located between the first lamp bead terminal and the second lamp bead terminal, and the reinforcement terminal extends along a second direction; the first direction and the second direction intersect.

2. The two-in-one LED lamp bead according to claim 1, characterized in that, The reinforcement terminal comprises a first pin, a second pin and a pin reinforcement portion; Two opposite ends of the pin reinforcement portion along the second direction are respectively connected to the first pin and the second pin; the pin reinforcement portion is used to reinforce the first pin and the second pin.

3. The two-in-one LED lamp bead according to claim 2, wherein The pin reinforcement portion has a sawtooth shape at two opposite sides along the first direction.

4. The two-in-one LED lamp bead according to claim 1, wherein The first lamp bead terminal includes a first red light functional area, a first green light functional area, a first blue light functional area, a first welding wire functional area, a third pin, a fourth pin, a fifth pin and a sixth pin; The first red light functional area is connected to the third pin; the first green light functional area is connected to the fourth pin; the first blue light functional area is connected to the fifth pin; and the first welding wire functional area is connected to the sixth pin.

5. The two-in-one LED lamp bead according to claim 4, wherein, The second lamp bead terminal includes a second red light functional area, a second green light functional area, a second blue light functional area, a second welding wire functional area, a seventh pin, an eighth pin, a ninth pin and a tenth pin; The second red light functional area is connected to the seventh pin; the second green light functional area is connected to the eighth pin; the second blue light functional area is connected to the ninth pin; and the second bonding wire functional area is connected to the tenth pin.

6. The two-in-one LED lamp bead according to claim 5, characterized in that, Also includes: A first cup, a second cup and a lamp bead beam wrapping the bracket terminal; The first bowl covers the first lamp bead terminal; The second bowl covers the second lamp bead terminal; the lamp bead cross beam covers the reinforcement terminal.

7. The two-in-one LED lamp bead according to claim 6, characterized in that, The thickness T1 of the lamp bead beam in the third direction has a value range of: 0.6mm≤T1≤0.65mm; the difference ΔT between the thickness T1 of the lamp bead beam and the thickness T2 of the cup mouth of the first bowl cup in the third direction has a value range of: 0.35mm≤ΔT≤0.38mm; the third direction is perpendicular to the first direction and the second direction.

8. The two-in-one LED lamp bead according to claim 6, wherein The first bowl cup, the second bowl cup and the lamp bead beam are formed by an injection molding process; When forming the first bowl cup, the second bowl cup and the lamp bead cross beam, a protruding structure is used to support the reinforcing terminal.

9. The two-in-one LED lamp bead according to claim 6, characterized in that, Also includes: A first lamp bead and a second lamp bead, wherein the first lamp bead includes a first red light chip, a first green light chip and a first blue light chip; and the second lamp bead includes a second red light chip, a second green light chip and a second blue light chip; The first red light chip and the second red light chip are vertical structure chips; the first green light chip, the second green light chip, the first blue light chip and the second blue light chip are horizontal structure chips.

10. The two-in-one LED lamp bead according to claim 9, characterized in that, The negative electrode of the first red light chip is fixed to the first red light functional area through conductive adhesive; the first green light chip is fixed to the first green light functional area through insulating adhesive; the first blue light chip is fixed to the first blue light functional area through insulating adhesive; the negative electrode of the first green light chip is connected to the first green light functional area through a bonding wire; the negative electrode of the first blue light chip is connected to the first blue light functional area through a bonding wire; The negative electrode of the second red light chip is fixed to the second red light functional area through conductive adhesive; the second green light chip is fixed to the second green light functional area through insulating adhesive; the second blue light chip is fixed to the second blue light functional area through insulating adhesive; the negative electrode of the second green light chip is connected to the second green light functional area through a bonding wire; the negative electrode of the second blue light chip is connected to the second blue light functional area through a bonding wire; The positive electrodes of the first red light chip, the first green light chip, and the first blue light chip are respectively connected to the first wire bonding functional area through bonding wires; the positive electrodes of the second red light chip, the second green light chip, and the second blue light chip are respectively connected to the second wire bonding functional area through bonding wires.

11. A preparation method of a two-in-one LED lamp bead, which is used to prepare the two-in-one LED lamp bead according to any one of claims 1-10, and is characterized in that, Comprising: According to the design drawing, a bracket terminal is formed by a stamping process; The bracket terminal includes a first lamp terminal, a second lamp terminal, and a strengthening terminal located between the first lamp terminal and the second lamp terminal; the first lamp terminal and the second lamp terminal are arranged along a first direction; the strengthening terminal is located between the first lamp terminal and the second lamp terminal, and the strengthening terminal extends along a second direction; the first direction and the second direction intersect; The bracket terminal is placed into an injection mold, and through an injection molding process, a first bowl cup, a second bowl cup, and a lamp cross beam are formed; the first bowl cup covers the first lamp terminal; the second bowl cup covers the second lamp terminal; the lamp cross beam covers the strengthening terminal; The injection-molded bracket terminal is bent to form a bracket terminal for a two-in-one LED lamp bead; Provide a first lamp bead and a second lamp bead, and connect the first lamp bead and the second lamp bead to corresponding positions.

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