CN208873763U - A kind of ultraviolet LED quartz lens assembling structure - Google Patents

Abstract

The utility model relates to a kind of ultraviolet LED quartz lens assembling structures, including LED support, lens-ring, LED support, lens-ring is separately positioned on a left side for dropping glue of die bonder workbench front, right side, UV LED chip is packaged on LED support, array is placed with quartz lens on lens-ring, rotary type is connected with swing arm at dropping glue of die bonder workbench posterior central position, swing arm other end is installed with suction nozzle, suction nozzle is designed as cone shaped opening, LED support, the top of lens-ring is installed with CCD camera respectively, swing arm identifies image by CCD camera and finds lens centre point on lens-ring, quartz lens is placed on UV LED chip by CCD camera again；The utility model compared with the existing technology, by changing suction nozzle and design lens array arrangement, lens arrangement work is replaced by hand, improving work efficiency by machine, and suction nozzle is that cone shaped opening increases suction nozzle and lens contact surface, guarantees enough adsorption capacities.

Description

A kind of ultraviolet LED quartz lens assembling structure

[technical field]

The utility model relates to LED encapsulation technology field, specifically a kind of ultraviolet LED quartz lens assembling structure.

[background technique]

Ultraviolet LED as environmentally protective novel industry, by long service life, the advantages such as small in size, low energy consumption and " Minamata pact " comes into force, and will gradually replace traditional UV lamp pipe.

Currently, ultraviolet LED encapsulation uses Molding (injection molding) technique, die bond bonding wire craft is completed on LED support Afterwards, by itself and the fixed good position of lens die, then high viscosity silica gel is injected into lens cavity and vacuumizes, and is placed into together Baking forms silica-gel lens in baking oven, has the following disadvantages:

A, contain epoxy resin in universal hot-forming silica gel, intolerant to UV and high temperature, easily occur silica gel in use The phenomenon that cracking and xanthochromia, greatly reduce LED chip light extraction efficiency；

B, due to the porous structure of silica gel, silica-gel lens are exposed outside, are easy in actual production assembly and use process Dust and sundries are adsorbed, forms high temperature hotspot until lens are burnt in lens surface after lighting；

C, the bonding force of silica gel and LED support is insufficient, Yi Fasheng the problem of lens fall off during wiped clean；

D, high viscosity silica gel poor fluidity vacuumizes and requires harsh, increase manufacturing cost；

E, the ultraviolet permeability of silica gel is lower, reduces LED chip light extraction efficiency.

[utility model content]

The purpose of this utility model seeks to solve above-mentioned deficiency and provide a kind of ultraviolet LED quartz lens assembly knot Lens arrangement can be worked by changing suction nozzle and design lens array arrangement and be replaced by hand, improving work by machine by structure Efficiency, and suction nozzle is that cone shaped opening increases the contact surface of suction nozzle and lens, ensure that enough adsorption capacities.

A kind of ultraviolet LED quartz lens assembling structure, including LED support 8, lens-ring 9, institute are designed to achieve the above object State LED support 8, lens-ring 9 is separately positioned on the left and right side of 10 dispensing workbench of bonder, 15 front, on the LED support 8 It is packaged with UV LED chip 2, array is placed with hemispherical quartz lens 1,10 points of the bonder on the lens-ring 9 Swing arm mounting base is provided at 15 posterior central position of glue workbench, rotary type is connected with swing arm in the swing arm mounting base 11,11 other end of swing arm is installed with suction nozzle 12, and the suction nozzle 12 is made of duroplasts, and the suction nozzle 12 is designed as circular cone Shape opening, the LED support 8, lens-ring 9 top be installed with CCD camera 1, CCD camera 2 14, the CCD phase respectively Machine 1, CCD camera 2 14 are respectively used to check the die bond point position of LED support 8, lens-ring 9, the CCD camera 1, CCD camera 2 14 is electrically connected the driving device of swing arm 11, and the swing arm 11 identifies image by CCD camera 2 14 and finds Lens centre point on lens-ring 9, the lens centre point is picked up after being overlapped with the central point of 12 cone shaped opening of suction nozzle, described Swing arm 11 identifies that quartz lens 1 is placed on UV LED chip 2 by image by CCD camera 1 again.

Further, aluminium nitride substrate 4 is provided on the LED support 8, the UV LED chip 2 is that LED is vertically beaten Hole chip, the UV LED chip 2 be it is upper just under negative structure, 2 bottom of UV LED chip passes through with aluminium nitride substrate 4 Elargol die bond forms, and with 6 connection of the negative terminal pad of aluminium nitride substrate 4, welding gold thread 5 is drawn at the top of the UV LED chip 2 It is connected to the positive terminal pad 7 of aluminium nitride substrate 4, quartz lens 1, the quartz lens are covered with above the UV LED chip 2 Silicone filler area 3 is equipped between 1 and aluminium nitride substrate 4, the silicone filler area 3 is interior filled with no epoxy resin silica gel.

Further, 1 bottom of quartz lens is designed as the bulge-structure of downward dimpling, and the bulge-structure is for arranging The bubble generated except 1 bottom of quartz lens and silica gel contact surface.

Further, the aluminium nitride substrate 4 is ceramic dual platen.

The utility model compared with the existing technology, has the advantages that

(1) the utility model will be scattered unordered lens by jig array arrangement, and completes assembly by bonder and make Industry, and matched suction nozzle uses duroplasts in bonder, taper circular hole opening to increase the contact surface with lens, and has foot Enough adsorption capacities；

(2) the downward dimpling in the utility model lens bottom, so as to the bubble for being effectively discharged with being generated when silica gel face contact；

(3) the utility model is worked lens arrangement by machine by way of changing suction nozzle and design lens arrangement jig Device replaces by hand, improving work efficiency；

(4) the utility model is generated using no epoxy silica gel without the problem of xanthochromia cracking, and final finished is that quartz is saturating Mirror, absorption dust will not burn lens and available alcohol wipe cleaning, applicability are stronger.

[Detailed description of the invention]

Fig. 1 is that silica gel instills schematic diagram in the utility model；

Fig. 2 is jig schematic diagram used in the utility model；

Fig. 3 is the structural schematic diagram of the utility model；

Fig. 4 is the structural schematic diagram of quartz lens and UV LED chip in the utility model；

Fig. 5 is the structural schematic diagram of positive and negative electrode pad in the utility model；

In figure: 1, quartz lens 2, UV LED chip 3, silicone filler area 4, aluminium nitride substrate 5, gold thread 6, cathode Pad 7, positive terminal pad 8, LED support 9, lens-ring 10, bonder 11, swing arm 12, suction nozzle 13, CCD camera 1, CCD camera 2 15, dispensing workbench.

[specific embodiment]

The utility model is made with reference to the accompanying drawing further explained below:

The utility model includes LED support 8, lens-ring 9, and LED support 8, lens-ring 9 are separately positioned on 10 dispensing of bonder The left and right side of 15 front of workbench is packaged with UV LED chip 2 on LED support 8, and array is placed in hemisphere on lens-ring 9 The quartz lens 1 of shape, is provided with swing arm mounting base at 10 dispensing workbench of bonder, 15 posterior central position, in swing arm mounting base Rotary type is connected with swing arm 11, and 11 other end of swing arm is installed with suction nozzle 12, and suction nozzle 12 is made of duroplasts, and suction nozzle 12 designs For cone shaped opening, LED bracket 8, lens-ring 9 top be installed with CCD camera 1, CCD camera 2 14, CCD camera respectively One 13, CCD camera 2 14 is respectively used to check the die bond point position of LED support 8, lens-ring 9, CCD camera 1, CCD camera 2 14 are electrically connected the driving device of swing arm 11, and swing arm 11 identifies image by CCD camera 2 14 and finds on lens-ring 9 Lens centre point, lens centre point are picked up after being overlapped with the central point of 12 cone shaped opening of suction nozzle, and swing arm 11 passes through CCD phase again Machine 1 identifies that quartz lens 1 is placed on UV LED chip 2 by image.

Wherein, aluminium nitride substrate 4 is provided on LED support 8, aluminium nitride substrate 4 is ceramic dual platen, UV LED chip 2 For LED vertical perforating chip, UV LED chip 2 be it is upper just under negative structure, 2 bottom of ultraviolet LED chip and aluminium nitride substrate 4 are logical Elargol die bond is crossed to form, and with 6 connection of the negative terminal pad of aluminium nitride substrate 4, welding gold thread 5 is drawn at the top of UV LED chip 2 It is connected to the positive terminal pad 7 of aluminium nitride substrate 4, quartz lens 1, quartz lens 1 and nitridation are covered with above UV LED chip 2 Silicone filler area 3 is equipped between aluminum substrate 4, silicone filler area 3 is interior filled with no epoxy resin silica gel.1 bottom of quartz lens is set It is calculated as the bulge-structure of downward dimpling, the bubble that bulge-structure is used to exclude 1 bottom of quartz lens and silica gel contact surface generates.

The utility model additionally provides a kind of ultraviolet LED quartz lens assembly method, comprising the following steps: will complete die bond It is placed on 10 dispensing workbench 15 of bonder with the LED support 8 of bonding wire, using two-component low viscosity silicone rubber, and is free of epoxy Resin sets the parameters such as air pressure and the dispensing time of dispenser and starts dispensing, and silica gel instills the natural levelling in 8 inside of LED support, And just overflow to the step for placing quartz lens 1, it is as shown in Fig. 1 to instill schematic diagram；Quartz lens 1 uses self-control jig array It arranges onto blue film, jig is made of (as shown in Fig. 2) three deck panels, and intermediate one layer is opened bellmouth and can make quartz lens 1 It is just passed through and by bottom panel backing, constantly shake makes the consistent spherical surface of lens upward, then flip horizontal jig, lens bottom Upward and with blue film absorption, lens can ordered array be arranged on blue film, carry out lens arrangement operation；10 suction nozzle 12 of bonder Tapered round mouth is designed, swing arm 11 identifies that image finds 1 central point of quartz lens by CCD camera 2 14, and cone shaped opening is inhaled 12 central point of mouth and lens centre are overlapped, and are then come into full contact with and are picked up, and identify that image is placed into LED support further according to camera one 8 designated positions, the downward dimpling in lens bottom can effectively exclude the bubble generated with silica gel contact surface, and not influence bottom chip And gold thread；The UV LED chip 2 that the assembly of quartz lens 1 is completed is placed into oven and is toasted, silica gel is solidified, solidification is completed Obtain ultraviolet LED finished product.

In the utility model, LED vertical perforating chip is upper just lower negative structure, and nitridation aluminum frame is ceramic dual platen； LED chip bottom and nitridation aluminum frame are formed by elargol die bond, and the negative terminal pad connection with bracket；Top pads welding gold Line draws the positive terminal pad for being connected to bracket；Die bond bonding wire using dispenser filling gel and covers quartz lens after the completion, puts Silica gel sufficiently solidifies after baking 4 hours in merging oven；LED connection forward dc power supply can be lighted and give off ultraviolet light.

The utility model is simultaneously not limited to the embodiments described above, and other any spirit without departing from the utility model are real Made changes, modifications, substitutions, combinations, simplifications under matter and principle, should be equivalent substitute mode, be included in practical Within novel protection scope.

Claims (4)

1. a kind of ultraviolet LED quartz lens assembling structure, it is characterised in that: including LED support (8), lens-ring (9), the LED Bracket (8), lens-ring (9) are separately positioned on the left and right side of bonder (10) dispensing workbench (15) front, the LED support (8) it is packaged on UV LED chip (2), array is placed with hemispherical quartz lens (1) on the lens-ring (9), described It is provided with swing arm mounting base at bonder (10) dispensing workbench (15) posterior central position, it is rotatable in the swing arm mounting base Formula is connected with swing arm (11), and swing arm (11) other end is installed with suction nozzle (12), and the suction nozzle (12) is made of duroplasts, The suction nozzle (12) is designed as cone shaped opening, the LED support (8), lens-ring (9) top be installed with CCD camera respectively One (13), CCD camera two (14), the CCD camera one (13), CCD camera two (14) are respectively used to check LED support (8), thoroughly The die bond point position of mirror ring (9), the CCD camera one (13), CCD camera two (14) are electrically connected the driving dress of swing arm (11) It sets, the swing arm (11) identifies image by CCD camera two (14) and finds lens centre point, the lens on lens-ring (9) Central point is picked up after being overlapped with the central point of suction nozzle (12) cone shaped opening, and the swing arm (11) passes through CCD camera one again (13) quartz lens (1) is placed on UV LED chip (2) by identification image.

2. ultraviolet LED quartz lens assembling structure as described in claim 1, it is characterised in that: set on the LED support (8) It is equipped with aluminium nitride substrate (4), the UV LED chip (2) is LED vertical perforating chip, and the UV LED chip (2) is upper Negative structure under just, UV LED chip (2) bottom are formed with aluminium nitride substrate (4) by elargol die bond, and with it is aluminum-nitride-based Negative terminal pad (6) connection of plate (4), UV LED chip (2) top welding gold thread (5), which is drawn, is connected to aluminium nitride substrate (4) positive terminal pad (7), UV LED chip (2) top are covered with quartz lens (1), the quartz lens (1) and nitrogen Change and be equipped with silicone filler area (3) between aluminum substrate (4), filled with no epoxy resin silica gel in the silicone filler area (3).

3. ultraviolet LED quartz lens assembling structure as claimed in claim 2, it is characterised in that: quartz lens (1) bottom It is designed as the bulge-structure of downward dimpling, the bulge-structure is generated for excluding quartz lens (1) bottom and silica gel contact surface Bubble.

4. ultraviolet LED quartz lens assembling structure as claimed in claim 3, it is characterised in that: the aluminium nitride substrate (4) is Ceramic dual platen.