CN101269592A - Silk screen fixture and technique for coating silicone grease with the same - Google Patents
Silk screen fixture and technique for coating silicone grease with the same Download PDFInfo
- Publication number
- CN101269592A CN101269592A CNA2008100669195A CN200810066919A CN101269592A CN 101269592 A CN101269592 A CN 101269592A CN A2008100669195 A CNA2008100669195 A CN A2008100669195A CN 200810066919 A CN200810066919 A CN 200810066919A CN 101269592 A CN101269592 A CN 101269592A
- Authority
- CN
- China
- Prior art keywords
- silk screen
- silicone grease
- screen fixture
- fixture
- coating
- Prior art date
- 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.)
- Pending
Links
Images
Abstract
The invention relates to silicone grease coating technology, and provides a silk screen frock and a technology method using the silk screen frock to coat the silicone grease. The method comprises steps as follows: firstly, the film technology is used for making the silk screen frock on a silk screen; secondly, the silk screen frock is fixed on an electronic component surface through a positioning device; thirdly, the silicone grease is coated on the silk screen frock, and the silk screen frock is removed. The silicone grease coating technology coats the silicone grease through a silk screen frock with a specific standard, which guarantees the thickness and uniformity for coating the silicon grease, thereby improving the radiating stability.
Description
Technical field
The present invention relates to the silicone grease coating processes, more particularly, relate to a kind of silk screen fixture and utilize the process of its coating silicone grease.
Background technology
In order to reduce thermal contact resistance, in electronic equipment, often use silicone grease as the heat-conducting medium material.For example at radiator and insulated gate bipolar transistor (Insulated Gate Bipolar Transistor, IGBT) or between other electronic components smear silicone grease, thereby fill up the gap of radiator and these electronic components, strengthen the radiating effect of radiator, avoid the module junction temperature to transfinite and cause electronic component to lose efficacy.
At present industry mainly uses the mode of roller to carry out manual application, and this technology instability can't guarantee the thickness of coating, and the coated coating layer thickness of different work person has very big difference; In addition, manual application also can't guarantee the uniformity of coating.These defectives will cause the heat radiation instability of radiator, and when assembling also can bring hidden danger such as substrate breaks because the silicone grease coating layer thickness is inhomogeneous.As shown in Figure 1, be processing procedure Capability index (Complex Process Capability index, distribution schematic diagram CPK) of manual application silicone grease.In the figure, (Lower Specification Limit is 100 LSL) to the specification lower limit, and (Upperspecification limit is 150 USL) to upper specification limit, and (Sample-Mean is 128.75 SM) to sample mean.The CPK value is 0.34 only under the operating type of manual application silicone grease at present, does not reach technological requirement.
Therefore need a kind of process of new coating silicone grease, guarantee thickness and uniformity that silicone grease applies, thereby improve radiation stability.
Summary of the invention
The object of the present invention is to provide a kind of process of utilizing the silk screen fixture coating silicone grease, be intended to solve the problem of the radiation stability difference that prior art exists in the silicone grease coating procedure.
The present invention also aims to provide a kind of silk screen fixture, to solve the above-mentioned problems in the prior art better.
In order to realize goal of the invention, the described process of silk screen fixture coating silicone grease of utilizing may further comprise the steps:
A. utilize film technology on silk screen, to make silk screen fixture;
B. by positioner described silk screen fixture is fixed to electronical elements surface;
C. coating silicone grease on described silk screen fixture, and remove described silk screen fixture.
Preferably, described electronic component comprises radiator, insulated gate bipolar transistor.
Preferably, the mesh order number of described silk screen fixture is 100 orders, and the silk footpath is 100 μ m, and corresponding silicone grease coating thickness is 100um.
Preferably, the step of coating silicone grease comprises among the described step B: utilize scraper silicone grease to be scraped the throughhole portions of silk screen fixture.
In order to realize goal of the invention better, the mesh order number of described silk screen fixture is 100 orders, and the silk footpath is 100 μ m, and is fixed by positioning device at electronical elements surface.
Preferably, described order number is 100 orders, and the silk footpath is that the silicone grease coating thickness of the mesh specification correspondence of 100 μ m is 100um.
Preferably, described silk screen fixture comprises screen printing forme, silk screen, screen frame and positioner.
Preferably, described silk screen adopts nylon material to make.
The present invention comes coating silicone grease by a kind of silk screen fixture with specific standard, has guaranteed thickness and uniformity that silicone grease applies, thereby has improved radiation stability.
Description of drawings
Fig. 1 is the CPK distribution schematic diagram of manual application silicone grease in the prior art;
Fig. 2 is the structure chart of silk screen fixture among the present invention;
Fig. 3 is the process method flow chart that utilizes the silk screen fixture coating silicone grease among the present invention;
Fig. 4 is the CPK distribution schematic diagram that utilizes the silk screen fixture coating silicone grease in one embodiment of the present of invention.
The specific embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
The present invention has guaranteed thickness and uniformity that silicone grease applies, thereby has improved radiation stability by coming coating silicone grease by a kind of silk screen fixture with specific standard.
The present invention has utilized screen printing technique, and this technology is to utilize photosensitive material to make silk screen fixture by photomechanical method, and making the silk screen hole of picture and text part on the silk screen fixture is through hole, and the silk screen hole of non-graphic part is plugged.By the extruding of scraper plate, printing ink or other media are transferred on the stock by the mesh of picture and text part during printing, formed the picture and text the same with original copy.This technology is mainly used in the printing of printing ink at present, and stock then mainly is paper, cardboard, timber, metal, textile, plastics, cork, leather, fur, pottery, glass, decal paper, transfer paper etc.The present invention then improves this, thereby this technology can be applied in the silicone grease coating processes of electronical elements surface.
Fig. 2 shows the structure of silk screen fixture among the present invention, and the printing surface of this silk screen fixture is netted, comprises screen printing forme 1, silk screen 2, screen frame 3 and positioner 4.Wherein:
(1) screen printing forme 1 is used to generate the shape that will apply.In actual applications, has the pattern that certain is determined on the screen printing forme 1.
(2) silk screen 2 is the media that are used to guarantee coating layer thickness, is the braid as screen printing forme 1 support, is commonly called as tulle, thin,tough silk screen, gauze, screen cloth etc.In one embodiment of the invention, silk screen 2 adopts nylon (Nylon) material to make.
The mesh specification of silk screen 2 is generally defined by order number (Mesh) and thickness:
(1) the order number is meant the mesh count in 1 inch (25.41mm) length, as: the mesh count in 1 inch (25.41mm) length is 100, be that each has 10000 mesh by 1 square inch the net that 100 holes are formed on longitude, the latitude direction, its order number is exactly 100 orders.The silk that the order number generally can illustrate silk screen with thread between close thin degree, the high more silk screen of order number is close more, mesh is more little, otherwise the low more silk screen of order number is sparse more, mesh is big more, as 150 order/inches, promptly 150 twines is arranged in 1 inch.Mesh is more little, and trafficability characteristic is poor more, and mesh is big more, and trafficability characteristic is just good more.When selecting silk screen for use, can select the silk screen of different meshes according to the required precision of undertaking the printing of.
(2) screen thickness refers to the distance between silk screen surface and the bottom surface, generally with millimeter (mm) or micron (μ m) metering.Thickness should be the measured value of silk screen when leaving standstill under tension-free state.Thickness is by the diameter that constitutes silk screen (i.e. " silk footpath ") decision, and it is relevant with thickness that silk screen is crossed the China ink amount.
Because stock of the present invention is electronic device, for example radiator or IGBT etc., therefore the thickness of coated silicone grease need have unified thickness and uniformity.Find by a large amount of experiments, based on the processing technology of present electronical elements surface, radiating effect the best under the silicone grease thickness of 100um, experimental data is as follows:
| Silicone grease thickness | 150um | 100um | 50um | 150um Vs 100um | 50um Vs 100um |
| Thermal resistance | 0.032K/W | 0.020K/W | 0.028K/W | 37.5％ | 28.57％ |
| The shell temperature | 108.23℃ | 106.64℃ | 107.82℃ | 1.59 | 1.18 |
Therefore when coating silicone grease, guarantee that silicone grease thickness is at 100um.The present invention when the order number of silk screen 2 is 100 orders, when the silk footpath is 100 μ m, can guarantee fully that the silicone grease coating thickness is 100 μ m through repeatedly experiment.
(3) 3 of screen frames are used to adhere to silk screen 2, make silk screen 2 tight on it.
(4) positioner 4 links to each other with screen frame 3, is used for silk screen fixture is played the role of positioning, and guarantees the coating position of pattern.
Fig. 3 shows the process flow process of utilizing the silk screen fixture coating silicone grease among the present invention, and this method flow is based on the structure of silk screen fixture shown in Figure 2, and detailed process is as follows:
In step S301, utilize film technology on silk screen 2, to make silk screen fixture.The alleged electronic component of the present invention has multiple, for example radiator, IGBT etc.
The manufacturing process of silk screen fixture mainly comprises two steps: at first selecting medium, in one embodiment of the present of invention, is to utilize the silk screen 2 of nylon material making as medium; Select the mesh specification, the mesh specification of silk screen 2 is generally defined by order number and thickness, as previously mentioned, because stock of the present invention is an electronic device, for example radiator or IGBT etc., therefore the thickness of coated silicone grease need have unified thickness and uniformity.Find that by a large amount of experiments based on the processing technology of present electronical elements surface, therefore radiating effect the best under the silicone grease thickness of 100um when coating silicone grease, guarantee silicone grease thickness at 100um, these silk screen 2 specifications are 100 orders.
In step S302, silk screen fixture is fixed to electronical elements surface.In one embodiment of the invention, be silk screen fixture to be fixed to electronical elements surface by the positioner that links to each other with screen frame 34.Concrete fixed form is decided on the structure of positioner 4, can fix by variety of ways such as latch, hasp, bindings, and the present invention does not limit protection domain with this.
In step S303 on silk screen fixture coating silicone grease.The present invention is coating silicone grease in several ways: in an exemplary embodiments, be to utilize scraper silicone grease to be scraped the throughhole portions of silk screen fixture.This scraper can be to make with polyurethane (polyurethane) material.
In step S304, remove silk screen fixture, silicone grease just is coated on the surface of electronic components such as radiator, IGBT uniformly.
This technology is more stable, has well evaded the operation difference of bringing owing to different work person, and operating efficiency also has greatly improved.As shown in Figure 4, be the CPK distribution schematic diagram that utilizes the silk screen fixture coating silicone grease in one embodiment of the present of invention.In the figure, specification lower limit LSL=100; Upper specification limit USL=150; Sample mean SM=128.75.By last figure as can be known, with the process stabilizing of silk screen fixture coating silicone grease, the CPK value is 0.99, has reached technological requirement.Among the present invention, the calculating of CPK generally can be finished by Mintab software, its computational process can be with reference to " China Measures Institute's journal " the 16th the 4th phase of volume of publishing in December, 2005, and title is the article of " Study on some problems of process capability exponential sum performance index ", repeats no more herein.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1, a kind of process of utilizing the silk screen fixture coating silicone grease is characterized in that, said method comprising the steps of:
A. utilize film technology on silk screen, to make silk screen fixture;
B. by positioner described silk screen fixture is fixed to electronical elements surface;
C. coating silicone grease on described silk screen fixture, and remove described silk screen fixture.
2, the process of utilizing the silk screen fixture coating silicone grease according to claim 1 is characterized in that, described electronic component comprises radiator, insulated gate bipolar transistor.
3, the process of utilizing the silk screen fixture coating silicone grease according to claim 1 is characterized in that, the mesh order number of described silk screen fixture is 100 orders, and the silk footpath is 100 μ m, and corresponding silicone grease coating thickness is 100um.
4, according to each described process of utilizing the silk screen fixture coating silicone grease in the claim 1 to 3, it is characterized in that the step of coating silicone grease comprises among the described step B: utilize scraper silicone grease to be scraped the throughhole portions of silk screen fixture.
5, a kind of silk screen fixture is characterized in that, the mesh order number of described silk screen fixture is 100 orders, and the silk footpath is 100 μ m, and is fixed by positioning device at electronical elements surface.
6, silk screen fixture according to claim 5 is characterized in that, described order number is 100 orders, and the silk footpath is that the silicone grease coating thickness of the mesh specification correspondence of 100 μ m is 100um.
7, according to claim 5 or 6 described silk screen fixtures, it is characterized in that described silk screen fixture comprises screen printing forme, silk screen, screen frame and positioner.
8, silk screen fixture according to claim 7 is characterized in that, described silk screen adopts nylon material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100669195A CN101269592A (en) | 2008-04-28 | 2008-04-28 | Silk screen fixture and technique for coating silicone grease with the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100669195A CN101269592A (en) | 2008-04-28 | 2008-04-28 | Silk screen fixture and technique for coating silicone grease with the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101269592A true CN101269592A (en) | 2008-09-24 |
Family
ID=40003919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100669195A Pending CN101269592A (en) | 2008-04-28 | 2008-04-28 | Silk screen fixture and technique for coating silicone grease with the same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101269592A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101668390B (en) * | 2009-09-22 | 2011-06-08 | 深圳崇达多层线路板有限公司 | Production technology of PCB (Printed Circuit Board) solder mask |
| CN102120207A (en) * | 2010-12-27 | 2011-07-13 | 上海中科深江电动车辆有限公司 | Device for coating heat-conducting silicone grease on radiation surface of insulated gate bipolar translator (IGBT) module and related coating method |
-
2008
- 2008-04-28 CN CNA2008100669195A patent/CN101269592A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101668390B (en) * | 2009-09-22 | 2011-06-08 | 深圳崇达多层线路板有限公司 | Production technology of PCB (Printed Circuit Board) solder mask |
| CN102120207A (en) * | 2010-12-27 | 2011-07-13 | 上海中科深江电动车辆有限公司 | Device for coating heat-conducting silicone grease on radiation surface of insulated gate bipolar translator (IGBT) module and related coating method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Grau et al. | Printed transistors on paper: Towards smart consumer product packaging | |
| Grau et al. | Fully high‐speed gravure printed, low‐variability, high‐performance organic polymer transistors with sub‐5 V operation | |
| Zhong et al. | Parametric investigation of flexographic printing processes for R2R printed electronics | |
| CN103219243A (en) | Manufacturing method of patterning metal lines | |
| TWI542478B (en) | Printed matter, method for manufacturing the same, substrate for using the method, ink composition for using the method, display substrate for comprising the printed matter, and electronic device for including the display substrate | |
| Hirsch et al. | A method to form smooth films of liquid metal supported by elastomeric substrate | |
| Jeong et al. | Ink-Jet-printed organic− inorganic hybrid dielectrics for organic thin-film transistors | |
| JP3208275U (en) | Curable heat conductive interface material and heat dissipation device | |
| Mogg et al. | Flexographic printing of ultra-thin semiconductor polymer layers | |
| Kang et al. | Statistical analysis for the manufacturing of multi-strip patterns by roll-to-roll single slot-die systems | |
| Xin et al. | Conductive grid patterns prepared by microcontact printing silver nanoparticles ink | |
| Kitsomboonloha et al. | MHz‐Range Fully Printed High‐Performance Thin‐Film Transistors by Using High‐Resolution Gravure‐Printed Lines | |
| CN104345942A (en) | Touch panel, conductive film and manufacturing method thereof | |
| CN101269592A (en) | Silk screen fixture and technique for coating silicone grease with the same | |
| Bodenstein et al. | Printing process and characterization of fully pad printed electroluminescent panels on curved surfaces | |
| CN106784393B (en) | A kind of conducting nanowires layer, graphic method and application | |
| CN104271260A (en) | Transparent conductive coatings on an elastomeric substrate | |
| Lin et al. | Effect of using ink containing polyacrylate and silicone surfactant on the inkjet printing of quantum dot films | |
| Peters et al. | Liquid film coating of small molecule OLEDs | |
| US8726828B2 (en) | Coating apparatus having coater chuck | |
| JP2008277728A (en) | Organic semiconductor element, manufacturing method thereof, organic transistor array, and display | |
| CN106024810A (en) | Flexible display substrate and manufacturing method thereof and display device | |
| Zhu et al. | Evaporative characteristics of sessile nanofluid droplet on micro‐structured heated surface | |
| KR20150033497A (en) | Composition for preparing transparent conductive layer and manufacturing method of transparent conductive structure using the same | |
| US20210360786A1 (en) | Methods for printing conductive inks and substrates produced thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20080924 |