CN110198598A - A kind of technique by fluorescent solutions even print on pcb board - Google Patents
A kind of technique by fluorescent solutions even print on pcb board Download PDFInfo
- Publication number
- CN110198598A CN110198598A CN201910521708.4A CN201910521708A CN110198598A CN 110198598 A CN110198598 A CN 110198598A CN 201910521708 A CN201910521708 A CN 201910521708A CN 110198598 A CN110198598 A CN 110198598A
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- CN
- China
- Prior art keywords
- fluorescent solutions
- fluorescent
- pcb board
- solutions
- steel mesh
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/10—Heater elements characterised by the composition or nature of the materials or by the arrangement of the conductor
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/0085—Apparatus for treatments of printed circuits with liquids not provided for in groups H05K3/02 - H05K3/46; conveyors and holding means therefor
Abstract
The invention discloses a kind of techniques by fluorescent solutions even print on pcb board, pre- fluorescent solutions groove is opened up out on pcb board, it carries out carrying out fluorescent solutions printing to pcb board using the printing machine of print solder paste in lamp bar industry, the production printing dedicated fluorescent solutions steel mesh of fluorescent solutions, fluorescent solutions steel mesh hole is opened up on fluorescent solutions steel mesh, fluorescent solutions are placed on fluorescent solutions steel mesh, using steel mesh scraper by fluorescent solutions steel mesh uniform brush into the fluorescent solutions groove on pcb board, pcb board after printing fluorescent solutions is sent into reflow ovens and is toasted, it takes out and completes fluorescent solutions solidification, realize fluorescent solutions even print on pcb board；The present invention is by fluorescent solutions even print on pcb board, use the phosphor constituents in blue light excitation fluorescent solutions, white light can be inspired while reducing blue light light intensity, does not reduce mould group brightness, and has filled up the technique blank by fluorescent solutions even print on pcb board in the market.
Description
Technical field
The present invention relates to pcb board production field, specially a kind of technique by fluorescent solutions even print on pcb board.
Background technique
TV industry, the backlight module of QLED TV issue blue light using blue-ray LED, by with red and green quantum
The optical material (QDEF diaphragm) of point, obtains high-purity white light, to restore the higher picture of coloring domain.
The number of applying for a patent be (CN104916762) a kind of white light LED area lighting source and preparation method thereof, cannot achieve by
Fluorescent solutions even print is in pcb board.
Lens currently on the market, either refraction type or reflective, more blue lights can all be concentrated on lens just on
Side causes picture right above lens partially blue, uniform as far as possible in order to make to throw blue light of the cloth on QDEF diaphragm, need to reduce LED
The intensity of surface blue light is taken around PCBLED pad for this purpose, on the region that lens are covered, coating
Substance containing fluorescent powder, fluorescent powder are excited by blue light, issue yellow light and blue light is white light, reducing the same of blue light light intensity
When do not reduce the overall brightness of mould group；It is of the same trade at present that the mode of the silk-screen Yellow ink on PCB is taken to reach similar effect mostly
Fruit.
Summary of the invention
The purpose of the present invention is to provide a kind of techniques by fluorescent solutions even print on pcb board, on overcoming
The technical issues of stating, the upper direct silk-screen Yellow ink of PCB, Yellow ink can only absorb blue light, so that mould group overall brightness reduces,
This technique can inspire white light while reducing blue light light intensity using the phosphor constituents in blue light excitation fluorescent solutions,
Mould group brightness is not reduced, and has filled up the technique blank by fluorescent solutions even print on pcb board in the market.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of technique by fluorescent solutions even print on pcb board, including pcb board, LED pad position and fluorescent solutions are recessed
Slot, the pcb board top side are provided with LED pad position, the pcb board top side and are located at LED pad position surrounding to offer fluorescence molten
Liquid groove；
The technique specific steps are as follows:
Step 1: on pcb board and it is located at the position that design around LED pad position needs to be coated with fluorescent solutions, opens up out
The reserved fluorescent solutions groove placed and fix fluorescent solutions；
Step 2: it carries out carrying out fluorescent solutions printing to pcb board using the printing machine of print solder paste in lamp bar industry；
Step 3: the production printing dedicated fluorescent solutions steel mesh of fluorescent solutions, according to step 1 on fluorescent solutions steel mesh
The position of middle fluorescent solutions groove is opening up fluorescent solutions steel mesh hole in requisition for the position of printing fluorescent solutions；
Step 4: fluorescent solutions are added drop-wise on fluorescent solutions steel mesh by feeding device, open the first control valve, are closed
Second control valve, by atmospheric pressure pole, band piston rises in casing drum, material storage tube is sucked in casing drum by conduit, sucking
The volumes of fluorescent solutions understood by scale, after sucking quantitative fluorescent solutions, close the first control valve, open the second control
Valve processed, atmospheric pressure pole band piston in casing drum decline, fluorescent solutions are added drop-wise on fluorescent solutions steel mesh by dropping liquid tube head,
Using steel mesh scraper on fluorescent solutions steel mesh surface by fluorescent solutions by fluorescent solutions steel mesh hole uniform brush on pcb board
In fluorescent solutions groove；
Step 5: the pcb board after printing fluorescent solutions being sent into reflow ovens and is toasted, and is solidified according to fluorescent solutions special
Property, reflow ovens oven temperature profile is designed, reflow ovens are divided into preheating, heat preservation, welding, cooling 4 regions, adjusts each region of reflow ovens
Temperature and range, solidify fluorescent solutions in reflow ovens, and pcb board is finally taken out reflow ovens, carry out room temperature heat dissipation, complete glimmering
Light solution curing process.
As a further solution of the present invention: feeding device described in step 2 is in use, pour into storing for fluorescent solutions
Cylinder is worked by servo motor and drives agitating shaft rotation, and then the paddle by rotating is stirred fluorescent solutions, simultaneously
Guarantee that material storage tube internal temperature is suitable for by the heating of resistive heater in heat-conducting plate, toward fluorescent solutions steel mesh on dropwise addition fluorescence it is molten
When liquid, the first control valve is opened, closes the second control valve, band piston rises in casing drum by atmospheric pressure pole, by material storage tube
It being sucked in casing drum by conduit, the volume of the fluorescent solutions of sucking is understood by scale, after sucking quantitative fluorescent solutions,
The first control valve is closed, the second control valve is opened, atmospheric pressure pole band piston in casing drum declines, and fluorescent solutions are passed through dropping liquid
Tube head is added drop-wise on fluorescent solutions steel mesh.
Feeding device includes casing drum, atmospheric pressure pole, material storage tube and servo motor, offers scale on the outside of the casing drum,
The outer upper side of the casing drum is equipped with mounting base, is equipped with atmospheric pressure pole, atmospheric pressure pole telescopic end position at the top of the casing drum
Piston is installed inside casing drum, the casing drum bottom is equipped with the second control valve, the installation of second control valve bottom
There is dropping liquid tube head, the outer side-lower of the casing drum is equipped with the first control valve, and first control valve passes through conduit and material storage tube
Connection, the material storage tube include shell and insulating layer, and the interior of shell is provided with insulating layer, is equipped at the top of the material storage tube
Servo motor, the servo motor output end and is located inside material storage tube and is equipped with agitating shaft, is equipped on the outside of the agitating shaft
Several paddles, material storage tube inside bottom side are equipped with heat-conducting plate, inlay inside the heat-conducting plate and be equipped with adding thermal resistance
Silk.
Beneficial effects of the present invention: this technique on pcb board, excites fluorescence using blue light by fluorescent solutions even print
Phosphor constituents in solution can inspire white light while reducing blue light light intensity, not reduce mould group brightness, and fill up
Technique blank by fluorescent solutions even print on pcb board in the market；
The feeding device in technique is worked by servo motor in the course of work and drives agitating shaft rotation, Jin Ertong simultaneously
The paddle for crossing rotation is stirred fluorescent solutions, while being guaranteed in material storage tube by the resistive heater heating in heat-conducting plate
Portion's proper temperature guarantees the influence that fluorescent powder and solution are sufficiently mixed and avoid temperature to fluorescent solutions in fluorescent solutions；
Simultaneously toward the first control valve when dropwise addition fluorescent solutions, is opened on fluorescent solutions steel mesh, the second control valve of closing passes through
Atmospheric pressure pole band piston in casing drum rises, and material storage tube is sucked in casing drum by conduit, the body of the fluorescent solutions of sucking
Product is understood by scale, after sucking quantitative fluorescent solutions, is closed the first control valve, is opened the second control valve, atmospheric pressure pole exists
Band piston declines in casing drum, and fluorescent solutions are added drop-wise on fluorescent solutions steel mesh by dropping liquid tube head, to being added drop-wise to fluorescence
Fluorescent solutions volume on solution steel mesh accomplishes to be precisely controlled, and avoids excessive fluorescent solutions are added dropwise and causes to waste, reduces production
Cost.
Detailed description of the invention
In order to facilitate the understanding of those skilled in the art, the present invention will be further described below with reference to the drawings.
Fig. 1 is pcb board fluorescent solutions print structure schematic diagram of the present invention；
Fig. 2 is feeding device structural schematic diagram of the present invention；
Fig. 3 is casing drum schematic diagram of internal structure of the present invention；
Fig. 4 is material storage tube sectional view of the present invention.
In figure: 1, pcb board；2, LED pad position；3, fluorescent solutions steel mesh；4, fluorescent solutions steel mesh hole；5, steel mesh scraper；
6, fluorescent solutions groove；11, casing drum；12, scale；13, mounting base；14, atmospheric pressure pole；15, the first control valve；16, material storage tube；
17, servo motor；18, piston；19, the second control valve；20, dropping liquid tube head；21, agitating shaft；22, paddle；23, shell；24,
Insulating layer；25, resistive heater；26, heat-conducting plate.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with embodiment, it is clear that described reality
Applying example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is general
Logical technical staff all other embodiment obtained without creative efforts belongs to what the present invention protected
Range.
Refering to Figure 1, a kind of technique by fluorescent solutions even print on pcb board, including pcb board 1, LED weldering
Disk position 2 and fluorescent solutions groove 6,1 top side of pcb board are provided with LED pad position 2,1 top side of pcb board and are located at LED pad position 2 four
Offer fluorescent solutions groove 6 week；
The technique specific steps are as follows:
Step 1: on pcb board 1 and it is located at the position that design around LED pad position 2 needs to be coated with fluorescent solutions, opens up
The fluorescent solutions groove 6 placed and fix fluorescent solutions is reserved out；
Step 2: it carries out carrying out fluorescent solutions printing to pcb board 1 using the printing machine of print solder paste in lamp bar industry；
Step 3: the production printing dedicated fluorescent solutions steel mesh 3 of fluorescent solutions, according to step on fluorescent solutions steel mesh 3
The position of fluorescent solutions groove 6 is opening up fluorescent solutions steel mesh hole 4 in requisition for the position of printing fluorescent solutions in one；
Step 4: fluorescent solutions are added drop-wise on fluorescent solutions steel mesh 3 by feeding device, open the first control valve 15,
The second control valve 19 is closed, band piston 18 rises in casing drum 11 by atmospheric pressure pole 14, and material storage tube 16 is inhaled by conduit
Enter in casing drum 11, the volumes of the fluorescent solutions of sucking is understood by scale 12, after sucking quantitative fluorescent solutions, closes the
One control valve 15, opens the second control valve 19, and the band piston 18 in casing drum 11 of atmospheric pressure pole 14 declines, fluorescent solutions are passed through
Dropping liquid tube head 20 is added drop-wise on fluorescent solutions steel mesh 3, is led to fluorescent solutions on 3 surface of fluorescent solutions steel mesh using steel mesh scraper 5
4 uniform brush of fluorescent solutions steel mesh hole is crossed into the fluorescent solutions groove 6 on pcb board 1；
Step 5: the pcb board 1 after printing fluorescent solutions is sent into reflow ovens and is toasted, is solidified according to fluorescent solutions
Characteristic designs reflow ovens oven temperature profile, and reflow ovens are divided into preheating, heat preservation, welding, cooling 4 regions, adjust each area of reflow ovens
Domain temperature and range, solidify fluorescent solutions in reflow ovens, and pcb board 1 is finally taken out reflow ovens, carry out room temperature heat dissipation, complete
At fluorescent solutions curing process.
Wherein fluorescent solutions are mixed by fluorescent powder and colloid or liquid.
It please refers to shown in Fig. 2-4, feeding device in step 2 is in use, pour into material storage tube 16 for fluorescent solutions, by watching
Taking the work of motor 17 drives agitating shaft 21 to rotate, and then the paddle 22 by rotating is stirred fluorescent solutions, leads to simultaneously
Cross in heat-conducting plate 26 resistive heater 25 heating guarantee 16 internal temperature of material storage tube be suitable for, toward fluorescent solutions steel mesh 3 on be added dropwise
When fluorescent solutions, the first control valve 15 is opened, closes the second control valve 19, by atmospheric pressure pole 14 with piston in casing drum 11
18 rise, and material storage tube 16 is sucked in casing drum 11 by conduit, and the volume of the fluorescent solutions of sucking is understood by scale 12, when
After sucking quantitative fluorescent solutions, the first control valve 15 is closed, opens the second control valve 19, the band in casing drum 11 of atmospheric pressure pole 14
Piston 18 declines, and fluorescent solutions are added drop-wise on fluorescent solutions steel mesh 3 by dropping liquid tube head 20.
Feeding device includes casing drum 11, atmospheric pressure pole 14, material storage tube 16 and servo motor 17, is offered on the outside of casing drum 11
Scale 12, the outer upper side of casing drum 11 are equipped with mounting base 13, and atmospheric pressure pole 14 is equipped at the top of casing drum 11, and atmospheric pressure pole 14 is flexible
End, which is located inside casing drum 11, is equipped with piston 18, and 11 bottom of casing drum is equipped with the second control valve 19,19 bottom of the second control valve
Portion is equipped with dropping liquid tube head 20, and the outer side-lower of casing drum 11 is equipped with the first control valve 15, the first control valve 15 by conduit with
Material storage tube 16 connects, and material storage tube 16 includes shell 23 and insulating layer 24, and shell 23 is internally provided with insulating layer 24, and material storage tube 16 pushes up
Portion is equipped with servo motor 17,17 output end of servo motor and is located inside material storage tube 16 and is equipped with agitating shaft 21, agitating shaft 21
Outside is equipped with several paddles 22, and 16 inside bottom side of material storage tube is equipped with heat-conducting plate 26, installation is inlayed inside heat-conducting plate 26
There is resistive heater 25.
This technique by fluorescent solutions even print on pcb board 1, using blue light excitation fluorescent solutions in fluorescent powder at
Point, white light can be inspired while reducing blue light light intensity, does not reduce mould group brightness, and has been filled up fluorescent solutions in the market
Technique blank of the even print on pcb board 1；
The feeding device in technique is worked by servo motor 17 and agitating shaft 21 is driven to rotate in the course of work simultaneously, into
And the paddle 22 by rotating is stirred fluorescent solutions, while being heated and being protected by the resistive heater 25 in heat-conducting plate 26
Demonstrate,proving 16 internal temperature of material storage tube is suitable for guaranteeing that fluorescent powder is sufficiently mixed with solution in fluorescent solutions and to avoid temperature molten to fluorescence
The influence of liquid；
Simultaneously toward when dropwise addition fluorescent solutions, the first control valve 15 of opening closes the second control valve on fluorescent solutions steel mesh 3
19, by atmospheric pressure pole 14, band piston 18 rises in casing drum 11, and material storage tube 16 is sucked in casing drum 11 by conduit, is inhaled
The volume of the fluorescent solutions entered is understood by scale 12, after sucking quantitative fluorescent solutions, is closed the first control valve 15, is opened
Second control valve 19, the band piston 18 in casing drum 11 of atmospheric pressure pole 14 decline, fluorescent solutions are added dropwise by dropping liquid tube head 20
Onto fluorescent solutions steel mesh 3, the fluorescent solutions volume being added drop-wise on fluorescent solutions steel mesh 3 is accomplished to be precisely controlled, avoids being added dropwise
Excessive fluorescent solutions cause to waste, and reduce production cost.
Present invention disclosed above preferred embodiment is only intended to help to illustrate the present invention.There is no detailed for preferred embodiment
All details are described, are not limited the invention to the specific embodiments described.Obviously, according to the content of this specification,
It can make many modifications and variations.These embodiments are chosen and specifically described to this specification, is in order to better explain the present invention
Principle and practical application, so that skilled artisan be enable to better understand and utilize the present invention.The present invention is only
It is limited by claims and its full scope and equivalent.
Claims (2)
1. a kind of technique by fluorescent solutions even print on pcb board, which is characterized in that including pcb board (1), LED pad position
(2) and fluorescent solutions groove (6), pcb board (1) top side are provided with LED pad position (2), pcb board (1) top side and position
In LED pad position (2), surrounding offers fluorescent solutions groove (6)；
The technique specific steps are as follows:
Step 1: on pcb board (1) and it is located at the position that design around LED pad position (2) needs to be coated with fluorescent solutions, opens up
The fluorescent solutions groove (6) placed and fix fluorescent solutions is reserved out；
Step 2: it carries out carrying out fluorescent solutions printing to pcb board (1) using the printing machine of print solder paste in lamp bar industry；
Step 3: the production printing dedicated fluorescent solutions steel mesh (3) of fluorescent solutions, according to step on fluorescent solutions steel mesh (3)
The position of fluorescent solutions groove (6) is opening up fluorescent solutions steel mesh hole (4) in requisition for the position of printing fluorescent solutions in one；
Step 4: fluorescent solutions are added drop-wise on fluorescent solutions steel mesh (3) by feeding device, are opened the first control valve (15),
The second control valve (19) are closed, band piston (18) rises in casing drum (11) by atmospheric pressure pole (14), by material storage tube (16)
By the way that in conduit sucking casing drum (11), the volumes of the fluorescent solutions of sucking is understood by scale (12), when quantitative glimmering of sucking
It after light solution, closes the first control valve (15), opens the second control valve (19), atmospheric pressure pole (14) drives in casing drum (11) and lives
(18) decline is filled in, fluorescent solutions are added drop-wise on fluorescent solutions steel mesh (3) by dropping liquid tube head (20), are used steel mesh scraper (5)
On fluorescent solutions steel mesh (3) surface by fluorescent solutions by fluorescent solutions steel mesh hole (4) uniform brush into glimmering on pcb board (1)
In light solution groove (6)；
Step 5: the pcb board (1) after printing fluorescent solutions being sent into reflow ovens and is toasted, and is solidified according to fluorescent solutions special
Property, reflow ovens oven temperature profile is designed, reflow ovens are divided into preheating, heat preservation, welding, cooling 4 regions, adjusts each region of reflow ovens
Temperature and range, solidify fluorescent solutions in reflow ovens, and pcb board (1) is finally taken out reflow ovens, carry out room temperature heat dissipation, complete
At fluorescent solutions curing process.
2. a kind of technique by fluorescent solutions even print on pcb board according to claim 1, which is characterized in that step
Feeding device described in rapid two is driven by servo motor (17) work and is stirred in use, fluorescent solutions are poured into material storage tube (16)
Axis (21) rotation is mixed, and then the paddle (22) by rotating is stirred fluorescent solutions, while by heat-conducting plate (26)
Resistive heater (25) heating guarantee material storage tube (16) internal temperature be suitable for, toward fluorescent solutions steel mesh (3) on dropwise addition fluorescence it is molten
It when liquid, opens the first control valve (15), closes the second control valve (19), driven and lived in casing drum (11) by atmospheric pressure pole (14)
It fills in (18) to rise, by material storage tube (16) by the way that in conduit sucking casing drum (11), the volume of the fluorescent solutions of sucking passes through scale
(12) understand, after sucking quantitative fluorescent solutions, close the first control valve (15), open the second control valve (19), atmospheric pressure pole
(14) band piston (18) declines in casing drum (11), and fluorescent solutions are added drop-wise to fluorescent solutions steel by dropping liquid tube head (20)
On net (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910521708.4A CN110198598A (en) | 2019-06-17 | 2019-06-17 | A kind of technique by fluorescent solutions even print on pcb board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910521708.4A CN110198598A (en) | 2019-06-17 | 2019-06-17 | A kind of technique by fluorescent solutions even print on pcb board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110198598A true CN110198598A (en) | 2019-09-03 |
Family
ID=67754522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910521708.4A Pending CN110198598A (en) | 2019-06-17 | 2019-06-17 | A kind of technique by fluorescent solutions even print on pcb board |
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Citations (6)
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| CN101143354A (en) * | 2007-10-10 | 2008-03-19 | 南京华显高科有限公司 | Shadow mask type plasma display fluorescent powder constant-temperature and constant-pressure spraying device |
| CN101820044A (en) * | 2010-04-09 | 2010-09-01 | 江苏伯乐达光电科技有限公司 | Metal substrate and light-emitting diode encapsulation method of metal substrate |
| CN101894889A (en) * | 2009-05-19 | 2010-11-24 | 上海科学院 | Method for preparing white light LED |
| CN103066185A (en) * | 2012-08-13 | 2013-04-24 | 木林森股份有限公司 | Manufacturing method for printing chip on board (COB) |
| CN105914289A (en) * | 2016-06-08 | 2016-08-31 | 湖南华特光电科技有限公司 | Packaging apparatus of LED chip inversion COB and production method thereof |
| CN207770117U (en) * | 2017-06-29 | 2018-08-28 | 岭南师范学院 | A kind of uniform New LED fluorescent powder coating unit of specular |
-
2019
- 2019-06-17 CN CN201910521708.4A patent/CN110198598A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101143354A (en) * | 2007-10-10 | 2008-03-19 | 南京华显高科有限公司 | Shadow mask type plasma display fluorescent powder constant-temperature and constant-pressure spraying device |
| CN101894889A (en) * | 2009-05-19 | 2010-11-24 | 上海科学院 | Method for preparing white light LED |
| CN101820044A (en) * | 2010-04-09 | 2010-09-01 | 江苏伯乐达光电科技有限公司 | Metal substrate and light-emitting diode encapsulation method of metal substrate |
| CN103066185A (en) * | 2012-08-13 | 2013-04-24 | 木林森股份有限公司 | Manufacturing method for printing chip on board (COB) |
| CN105914289A (en) * | 2016-06-08 | 2016-08-31 | 湖南华特光电科技有限公司 | Packaging apparatus of LED chip inversion COB and production method thereof |
| CN207770117U (en) * | 2017-06-29 | 2018-08-28 | 岭南师范学院 | A kind of uniform New LED fluorescent powder coating unit of specular |
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Application publication date: 20190903 |
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