A new Mini-COB packaging structure and method

Abstract

The present invention discloses a novel Mini‑COB packaging structure and method, comprising a lens mold and a substrate, wherein the lens mold is provided with a convex hole and a concave hole, and further comprising a protective mechanism, wherein the protective mechanism comprises a first protective component and a second protective component which are detachably arranged on the lens mold, and the second protective component is located at the lower side of the lens mold; the beneficial effects of the present invention are as follows: through the designed protective mechanism, when it is necessary to protect the concave hole, the first protective plate is picked up, so that the first plug block is inserted into the first slot and abuts against the first reinforcement block, so that the first protective plate is fixed firmly, and the first protective plate is used to protect the concave hole; when it is necessary to protect the convex hole, the second protective plate is picked up, so that the second reinforcement block is inserted into the second slot, and with the cooperation of the second reinforcement block, the second protective plate is fixed firmly, and the second protective plate is used to protect the convex hole.

Description

Technical Field

[0001] The present invention belongs to the field of packaging technology, and in particular relates to a novel Mini-COB packaging structure and method. Background Art

[0002] The existing MINI-COB light panel display mainly relies on packaging and dispensing LENS molding; the light shape is made by the diffusion of LENS glue; the pitch in the finished display cannot be large; the LENS light-emitting angle is no longer large; the light shape and low brightness cannot meet the large-pitch display solution; the chip pitch is small and the cost is high.

[0003] The new Mini-COB packaging structure is on the MINI-COB substrate; lens molds of different angles and sizes are designed; the COB semi-finished product is placed in the mold and positioned; the mold is closed and the glue is injected to form the designed lens on the substrate; the lens mold is provided with concave holes and convex holes, and the direct exposed design is not conducive to protecting the concave holes and convex holes. Summary of the invention

[0004] The object of the present invention is to provide a novel Mini-COB packaging structure and method, and to add a protective mechanism to protect the concave through-hole positions and the convex through-hole positions.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a new Mini-COB packaging structure, comprising a lens mold and a substrate, the lens mold being provided with convex through holes and concave through holes, and also comprising a protective mechanism, and the protective mechanism comprising a first protective component and a second protective component which can be detachably arranged on the lens mold, and the second protective component is located on the lower side of the lens mold.

[0006] As a preferred technical solution of the present invention, the first protective component includes a first protective plate and a first slot, the first slot is symmetrically opened at the top of the lens mold, and the first slot is located on the outside of the concave hole, the inner side of the first slot is provided with symmetrically distributed first reinforcement blocks, the first protective plate is detachably arranged at the top of the lens mold, and the bottom of the first protective plate is provided with a first plug-in block inserted into the first slot, and the first protective plate is located on the outside of the concave hole after installation.

[0007] As a preferred technical solution of the present invention, the first protective plate and the first plug-in block are an integrated structure, and the first reinforcement block is a rectangular parallelepiped structure.

[0008] As a preferred technical solution of the present invention, the second protective component includes a second slot and a second plug-in block. The second slot is symmetrically opened at the bottom of the lens mold, and the second slot is located on the outside of the convex hole. The inner side surface of the second slot is provided with symmetrically distributed second reinforcement blocks. The second protective plate is detachably arranged at the bottom of the lens mold, and the top of the second protective plate is provided with a second plug-in block inserted into the second slot.

[0009] As a preferred technical solution of the present invention, the second protective plate and the second plug-in block are an integrated structure, and the second plug-in block is a trapezoidal structure.

[0010] As a preferred technical solution of the present invention, a positioning column is provided at the bottom of the lens mold, and a positioning groove for inserting the positioning column is provided on the substrate.

[0011] As a preferred technical solution of the present invention, the top of the lens mold is coated with ink, the top of the ink is provided with an LED chip and packaging glue, and solder paste is provided between the LED chip and the ink.

[0012] The present invention also discloses a novel Mini-COB packaging method, which is as follows:

[0013] Step 1: Make the substrate into a semi-finished product that can be lit;

[0014] Step 2: Place the semi-finished light panel on the designed lens mold;

[0015] Step 3: Fill the lens mold with silicone, silicone resin, epoxy resin, PC, and PPA materials in the hopper, preheat the materials and extrude them into the injection mold through the screw; mold temperature: 130℃; mold switch position: 228.5mm; ejector position: 16.0mm; mold opening time: 1S; removal time 1.88s; mold thickness: 291.9mm; mold closing pressure 650KG; injection molding on substrate 6; the lamp board is completed.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] Through the designed protection mechanism, when it is necessary to protect the concave hole, pick up the first protection plate, insert the first insertion block into the first slot, and abut against the first reinforcement block, so that the first protection plate is fixed firmly, and the first protection plate is used to protect the concave hole; when it is necessary to protect the convex hole, pick up the second protection plate, insert the second reinforcement block into the second slot, and with the cooperation of the second reinforcement block, the second protection plate is fixed firmly, and the second protection plate is used to protect the convex hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1It is a structural schematic diagram of the present invention;

[0019] Figure 2 For the present invention Figure 1 Schematic diagram of the enlarged structure of the E region;

[0020] Figure 3 For the present invention Figure 1 Schematic diagram of the enlarged structure of the G region;

[0021] Figure 4 It is a schematic diagram of the connection structure of the lens and the substrate of the present invention;

[0022] In the figure: 1. lens mold; 2. convex hole; 3. positioning column; 4. solder paste; 5. LED chip; 6. substrate; 7. ink; 8. packaging glue; 9. positioning groove; 10. first protective plate; 100. first plug-in block; 101. first slot; 102. first reinforcement block; 11. concave hole; 12. second protective plate; 121. second reinforcement block; 122. second slot; 123. second plug-in block. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] Example 1

[0025] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , is the first embodiment of the present invention, which provides a new Mini-COB packaging structure, including a lens mold 1 and a substrate 6. The lens mold 1 is provided with a convex through hole 2 and a concave through hole 11, and also includes a protective mechanism, and the protective mechanism includes a first protective component and a second protective component which can be detachably arranged on the lens mold 1, and the second protective component is located on the lower side of the lens mold 1.

[0026] In this embodiment, preferably, the first protective component includes a first protective plate 10 and a first slot 101, the first slot 101 is symmetrically opened at the top of the lens mold 1, the first slot 101 is opened, and the first slot 101 is located outside the concave hole 11, the inner side of the first slot 101 is provided with symmetrically distributed first reinforcement blocks 102, the first reinforcement blocks 102 are added, the first protective plate 10 is detachably arranged at the top of the lens mold 1, and the bottom of the first protective plate 10 is provided with a first reinforcement block 102 inserted therein. The first plug-in block 100 in the slot 101 realizes the addition of the first plug-in block 100. After the first protective plate 10 is installed, it is located on the outside of the concave hole 11. When the concave hole 11 needs to be protected, the first protective plate 10 is picked up to insert the first plug-in block 100 into the first slot 101 and rest on the first reinforcement block 102, so that the first protective plate 10 is fixed firmly. The first protective plate 10 is used to protect the concave hole 11. When the concave hole 11 needs to be used, the first protective plate 10 can be removed.

[0027] In this embodiment, preferably, the first protective plate 10 and the first plug-in block 100 are an integrated structure, so that the strength of the first protective plate 10 and the first plug-in block 100 is better, and the first reinforcement block 102 is a rectangular parallelepiped structure.

[0028] In this embodiment, preferably, the second protective component includes a second slot 122 and a second plug block 123. The second slot 122 is symmetrically opened at the bottom of the lens mold 1, thereby realizing the opening of the second slot 122, and the second slot 122 is located on the outside of the convex hole 2. The inner side surface of the second slot 122 is provided with symmetrically distributed second reinforcement blocks 121, thereby realizing the addition of the second reinforcement blocks 121. The second protective plate 12 is detachably arranged at the bottom of the lens mold 1, and the top of the second protective plate 12 is provided with a second plug block 123 inserted into the second slot 122, thereby realizing the addition of the second plug block 123. When it is necessary to protect the convex hole 2, the second protective plate 12 is picked up so that the second reinforcement block 121 is inserted into the second slot 122, and with the cooperation of the second reinforcement block 121, the second protective plate 12 is fixed firmly, and the second protective plate 12 is used to protect the convex hole 2. When the convex hole 2 needs to be used, the second protective plate 12 is removed.

[0029] In this embodiment, preferably, the second protective plate 12 and the second plug block 123 are an integrated structure, so that the strength of the second protective plate 12 and the second plug block 123 is better, and the second plug block 123 is a trapezoidal structure.

[0030] It should be additionally explained that: the substrate 6 is FR-4 / BT / MCPCB / FOG; and the lens mold 1 is PC plastic.

[0031] Example 2

[0032] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , which is the second embodiment of the present invention, is based on the first embodiment, except that:

[0033] A positioning column 3 is provided at the bottom of the lens mold 1, which realizes the addition of the positioning column 3. A positioning groove 9 for inserting the positioning column 3 is opened on the substrate 6, which increases the positioning when the lens mold 1 and the substrate 6 are spliced; the top of the lens mold 1 is coated with ink 7, which enables the ink 7 to be added. The top of the ink 7 is provided with an LED chip 5 and a packaging glue 8, which realizes the addition of the LED chip 5 and the packaging glue 8. A solder paste 4 is provided between the LED chip 5 and the ink 7.

[0034] Example 3

[0035] The third embodiment of the present invention provides a novel Mini-COB packaging method, comprising the following steps:

[0036] Step 1: The substrate 6 is solidified to make it into a semi-finished product that can be lit;

[0037] Step 2: Place the semi-finished light panel on the designed lens mold 1;

[0038] Step 3: Fill the lens mold 1 with silicone, silicone resin, epoxy resin, PC, and PPA materials and place them in the hopper. After the materials are preheated, they are extruded into the injection mold through the screw. Screw position: 43mm; pressure: -4.1R MPa; 1 shot time 0.14S; metering time: 2.58s; mold temperature: 130℃; switch mold position: 228.5mm; ejector position: 16.0mm; mold opening time: 1S; removal time 1.88s; mold thickness: 291.9mm; mold closing pressure 650KG; injection molding on substrate 6; the light board is completed and applied to TV / MINT / NB / AR / VR / vehicle products through the light board; the distance between the light-emitting surface of the light board lens and the light guide plate surface can be significantly reduced to show a small OD; the light type diffusion of the synchronous light board can reduce the number of chip arrangements and reduce the production cost of the light board.

[0039] Although the embodiments of the present invention have been shown and described, as detailed above, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel Mini-COB packaging structure, comprising a lens mold (1) and a substrate (6), wherein the lens mold (1) is provided with a convex through hole (2) and a concave through hole (11), characterized in that: The lens mold (1) further comprises a protective mechanism, wherein the protective mechanism comprises a first protective component and a second protective component which are detachably arranged on the lens mold (1), wherein the second protective component is located at the lower side of the lens mold (1); the first protective component comprises a first protective plate (10) and a first slot (101), wherein the first slot (101) is symmetrically arranged at the top of the lens mold (1), and the first slot (101) is located at the outer side of the concave through hole (11), and the inner side surface of the first slot (101) is provided with symmetrically distributed first reinforcement blocks (102), the first protective plate (10) is detachably arranged at the top of the lens mold (1), and the bottom of the first protective plate (10) is provided with a first insertion slot (102). The first plug block (100) is in the slot (101); the first protective plate (10) is located outside the concave hole (11) after installation; the second protective component comprises a second slot (122) and a second plug block (123); the second slot (122) is symmetrically arranged at the bottom of the lens mold (1), and the second slot (122) is located outside the convex hole (2); the inner side surface of the second slot (122) is provided with symmetrically distributed second reinforcement blocks (121); the second protective plate (12) is detachably arranged at the bottom of the lens mold (1), and the top of the second protective plate (12) is provided with a second plug block (123) inserted into the second slot (122).

2. According to the novel Mini-COB packaging structure of claim 1, it is characterized in that: The first protective plate (10) and the first insert block (100) are an integrated structure, and the first reinforcement block (102) is a rectangular parallelepiped structure.

3. According to the novel Mini-COB packaging structure of claim 1, it is characterized in that: The second protective plate (12) and the second plug block (123) are an integrated structure, and the second plug block (123) is a trapezoidal structure.

4. According to the novel Mini-COB packaging structure of claim 1, it is characterized in that: A positioning column (3) is provided at the bottom of the lens mold (1), and a positioning groove (9) for the positioning column (3) to be inserted is provided on the base plate (6).

5. The novel Mini-COB packaging structure according to claim 1 is characterized in that: The top of the lens mold (1) is coated with ink (7), the top of the ink (7) is provided with an LED chip (5) and a packaging glue (8), and solder paste (4) is provided between the LED chip (5) and the ink (7).

6. A novel Mini-COB packaging method, comprising the packaging structure according to any one of claims 1 to 5, characterized in that: The packaging method is as follows: Step 1: The substrate (6) is solidified to form a semi-finished product that can be lit; Step 2: Place the semi-finished light panel on the designed lens mold (1); Step 3: Fill the lens mold (1) with silicone, silicone resin, epoxy resin, PC, and PPA materials and place them in the hopper. Preheat the materials and extrude them into the injection mold through the screw; mold temperature: 130°C; mold opening and closing position: 228.5mm; ejector position: 16.0mm; mold opening time: 1S; removal time: 1.88s; mold thickness: 291.9mm; mold closing pressure: 650KG; injection molding on the substrate (6); and the lamp board is completed.

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