UV-LED Curing Machine Used For High Performance Electronic Components

 Today, with the continuous development of science and technology, the integration of semiconductor and electronic components is becoming higher and higher, and the requirements for UV LED Curing System Machine used in the packaging process of chips and electronic components are becoming higher and higher. DSXUV, as a UV LED curing system machine manufacture, can meet the needs of precision electronic components adhesive and LEDUV curing, can provide a series of mature products.

The following requirements must be met :

1.The strength of UV LED curing machine is to be enough.

Generally speaking, electronic components are mass production. This kind of mass production requires high production efficiency. The higher intensity of the UV LED curing machine and the faster conveyor belt will greatly increase the productivity of a single device. DSXUV LED UV Curing Light Source uses UV LED light chip as the light source, the light intensity is adjustable, can meet the application of a variety of product processes, productivity has several times or even dozens of times of space for improvement.

2.EMC electromagnetic radiation is low:

The higher the integration degree of chips and electronic components is, the higher the sensitivity degree to EMC is, and they can no longer withstand EMC interface emitted by some microwave excited ultraviolet lamps, which makes them have production quality risks. In this regard, DSXUV UV LED Light Curing Equipment as a cold light source, no infrared light, no thermal radiation and EMC interference, more than UV mercury lamp.

3.Heat dissipation of UV LED curing machine is good:

In the long time, high intensity curing work, the heat dissipation of UV LED Curing Lamp Systems is very important. Only the heat dissipation system designed by scientific calculation can guarantee the good operation of UV LED curing system machine.

4.UV LED Curing machine should be small:

High performance components are generally small in size, so the UV LED curing machine is also required to be small in size, which has no impact on other equipment in the production line. And electronic components production workshop environment requirements are very high, such as temperature, humidity and cleanliness. Compared with UV mercury lamp, the integrated design of DSXUV LED UV Light Curing Lamp Machine is more suitable for curing electronic components, and it is flexible and portable. However, UV mercury lamps usually require large distribution cabinet type power supply, fans and conveyor systems, requiring significant adjustments to the factory hardware environment, as well as noise and cleanliness.

What Are The Advantages Of Nitrogen UV LED Curing Systems

 Nitrogen UV LED curing oven, also known as inert gas UV curing box, is a new type of UV LED light source, is through the external nitrogen to create a clean and constant temperature environment without oxygen. The nitrogen filled UV LED Curing Chamber developed by DSXUV has a great difference from ordinary UV curing chamber in its internal circulating air duct performance and curing structure. Nitrogen UV LED curing oven is equipped with nitrogen inlet and outlet device, and nitrogen flow meter can more accurately control the flow of nitrogen into the box, with a quick plug and pull charging interface, convenient for nitrogen into, at the same time through the control of nitrogen flow, so that nitrogen can be fully used.

How To Detach a Wafer From The UV Tape By Using a UV LED Curing Light Systems

 Before the chips scribing, the wafer is fixed to the frame with scribing film. After the scratching process is completed, UV light is used to irradiate the fixed film to make the UV film solidify and harder, so as to reduce the stickiness of the scratching fixed film and facilitate the smooth production of subsequent packaging processes. In other words, the UV tape has a strong adhesive strength and holds the wafer firmly during the wafer grinding process or the wafer cutting process. When ultraviolet LED light radiation, the bonding strength will be reduced. As a result, the wafer or chip can easily peel off the tape after UV LED Light exposure. UV LED Curing Systems Machine solves the degumming process of wafer, glass and ceramic cutting process. It is not only commonly used in semiconductor packaging industry, but also for the use of UV film degumming of semiconductor materials such as optical lens, LED, IC, semiconductor, integrated circuit board and mobile hard disk. The UV curing systems in the prior art mostly uses UV mercury lamp. The light source of UV mercury lamp with high heat emission is easy to be damaged by heat sensitive materials, and its efficiency is low, and its quality standard is difficult to be controlled accurately, so it is not suitable for high precision devices such as chips. Shenzhen Deshengxing Electronics Co., Ltd. adopts the environment-friendly low-temperature LED UV Curing Light Source Systems, easy to complete the UV film de-film process, and does not damage the wafer, greatly meet the production needs.

The details of "What is UV Film? UV Adhesive Principle"

Application :

Suitable for optical lens, LED, IC, semiconductor, integrated circuit board, mobile hard disk and other semiconductor materials, glass filter UV film degumming, UV tape degumming use. UV LED Curing Systems is a kind of UV film and cutting film tape viscosity reduction and viscosity removal of automatic curing equipment. The wafer, glass and other materials can be pasted on 6’’, 8’’ and 12’’ brackets with adhesive dissolving device, which has high efficiency of adhesive dissolving ability and can quickly reduce the stickiness of UV Tape on materials.

UV LED Curing Equipment Used In Optical Lens Bonding

 

In the field of electronic optics, the use of UV glue for the gluing of optical lenses has been very common. 

When curing UV glue, many manufacturers will choose to use UV LED curing machine instead of 

traditional UV mercury lamp for curing, why? One of the key factors is that the ultraviolet light source 

produced by the UV LED Curing Systems is a single band, and belongs to the “cold light source”, 

no thermal radiation damage and other advantages. In contrast to the traditional UV mercury lamp, 

the use of UV LED Ultraviolet Light can effectively prevent the deformation of the lens when it fits.

The UV LED curing equipment has been mature used in all kinds of gluing requirements of UV glue for 

optical lenses. For the problem of poor curing effect caused by glue leakage at the edge of the lens, the 

UV LED curing function developed and produced by Deshengxing Technology effectively solves the 

problem of bubbles generated in the gluing process of optical lenses or the problem that the lens edge 

solidifies and does not dry.

The type of optical lens UV curing machine can be divided into UV LED Spot Light Source, Large Area 

UV LED Surface Curing Light Source, and Linear UV LED Curing Light Source according to the cured 

area. For example, a 200*100mm UV LED Curing Systems is supplied to a manufacturer of high 

precision optical lenses in Guangdong, China. The first test result is OK. After some testing, the 

irradiation area, illumination intensity, curing time of the customized 100*200mm UV LED Curing 

Systems are very in line with the customer’s requirements. The customer promptly placed an order 

for two UV LED Curing machine after we quoted a reasonable price.

injecting glue into the optical lens

The Precautions Of Driver Circuit Design Matters

 Because LED is a constant current driven electronic component, it is known from the characteristic curve of LED I-V that when the voltage changes slightly, the current passing through the LED will change greatly, which may cause the uneven current flowing into LED. Therefore, LED circuit design is not allowed to use the constant voltage way to drive. If the constant voltage drive is unavoidable, it is best to use the following (B) circuit. Because the difference in the positive voltage of each LED in the (A) circuit may cause the current flowing into the Ultraviolet LED Lamp Chips to be uneven. In addition, it is necessary to measure whether the current through the LEDs is within the working current range of the standard specifications during product design and trial production.

1.Please use forward current to drive Ultraviolet Light Emitting Diode. Do not apply voltage to the product in the positive or negative direction when the product is not in use. In particular, do not apply voltage to the product continuously in the negative direction. This may lead to ion migration and damage to the LED. If the product is not used for a long time, in case of emergency, the main power supply should be turned off.

2.Because the test current of LED with different power will be inconsistent, it is necessary to read the product specification in detail when using Ultraviolet LED, and it is advisable to use the standard not exceeding the scope of specification identification. Because LED is an electronic component, the internal resistance of LED is caused by the change of ambient temperature. Therefore, the specifications and parameters of our company’s related products are tested under the condition of 25 ℃ at room temperature.

3.(i.e. AC to DC product). In the current conversion process, there may be a pulse signal, high voltage pulse signal will cause damage to the UV LED P/N junction, resulting in the LED failure. Therefore, the voltage fluctuation we allow is within 2%.

4.When test power supply is used for spot measurement and inspection of semi-finished products, the no-load voltage of the test power supply should be paid attention to. In general, the no-load voltage is required to be lower than actual demand voltage of the load, so as not to damage the UV LED Light Beads due to the high no-load voltage of the power supply and any over-voltage of the load at the moment of point measurement.

5.Different voltage products can not be applied to the same parallel circuit, which will increase the LED voltage drop difference and lead to a large difference in the current passing through a single LED, which will affect the radiation flux and reliability of Ultraviolet LED Light Chips, and will cause burnout and failure in serious cases.

(Note: current limiting measures are necessary, otherwise a slight voltage change will cause a large current change, which may cause LED failure.)

Solidified Camera Module, Installed Surveillance Camera

 Some camera module manufacturers used UV lamp irradiation curing before, the time is longer. In addition, the surface temperature of the camera assembly is higher after irradiation, which seriously affects the quality of their products. Therefore, they found us, Shenzhen Deshengxing Electronics Co., Ltd., to conduct special product testing.

We knew that, in the production process of the security surveillance camera module, we need to use UV glue to fix the filters, lenses, CMOS components, etc. Because of using UV glue bonding, and the requirements of camera module is relatively high, it needs to use matched UV LED curing light source for curing and drying. And, because the volume of camera module is relatively small, we have given priority to choose Shenzhen Deshengxing Electronics Co., Ltd. UV LED Spot Light Source Equipment for product testing.

(overall / individual control)

After a series of comparative tests, the customer choose a custom UV LED spot light source equipment here for the curing UV glue. According to the test results, the surface temperature of the UV glue does not rise more than 5 ℃ after 5-10 seconds of UV irradiation, and the use of ordinary natural cooling irradiation head can meet the use requirements. Combined with actual using situation, we chose 1+4 UV LED spot light source curing machine to test. LED UV Curing Machine from Shenzhen Deshengxing Electronics Co., Ltd. not only greatly saves the curing time, but also the temperature of the camera module parts does not change basically. The curing effect of the UV glue is particularly good, which effectively solves the problems encountered by customers and achieves long-term cooperation opinions.

(1) medical products  (2) electronics  (3) components fixed

(4) LCD pre cured  (5) camera module

(1) DVD/CD lens bonding irradiation

(2) lens and filter bonding irradiation

(3) digital lens IC bonding irradiation

(4) lens scoring bonding irradiation

(5) LCD/DLP optical

(6) liquid crystal main inlet seal and OLB enhancement

(7) small prism bonding

(8) hard disk, magnetic head bonding irradiation

(9) after core-adjusting, fiber optic connector parts bonding irradiation

(10) optical fiber color bonding irradiation

(11) photo-electric switch/special shaped parts bonding irradiation

(12) earphone voice coil bonding irradiation

(13) miniature motor parts bonding irradiation

(14) medical products bonding irradiation

(15) injecting needle fixation bonding irradiation

(16) compound bonding irradiation

Factors Influencing The Curing Time Of UV Glue

 In cognition, we know that the curing speed of UV glue is very fast. In a certain wavelength of ultraviolet radiation can be dry within a few seconds. In actual use, the curing time of UV glue will be affected by a different factors. The factors affecting the curing time of UV glue are mainly divided into internal factors and external factors.

1.Internal factors

Internal factors are also decisive factors. Photo-initiator is one of the main components of any UV curing system, which plays a decisive role in the curing rate of UV system. Different UV glue formulations, the proportion of photo-initiator dosage is appropriate curing completely. On the contrary, it is slow and may not be cured.

2.External factors

UV curing adhesive curing rate, final curing depth and surface dry effect and UV light source, lighting time, material transmittance and other factors are also related, it is recommended to determine the specific curing time through the test.

Related to the power of the ultraviolet curing lamp, high power curing polymerization is fast, otherwise the opposite. Under normal circumstances, UV glue is cured by UV curing lamp irradiation. Low wattage UV solidification systems curing time will be extended under irradiation. High wattage Ultraviolet lamp curing time will be shortened under irradiation.

It is also related to the transmittance of the material. The material is conducive to ultraviolet light penetration, which is conducive to fast curing speed. On the contrary, the curing time is extended. If UV penetration is difficult, it may not cure.

UV Ink Curing Light Source Machine

UV Ink is used as the base material of the light curing resin as the ink. Under the irradiation of ultraviolet light, the free radical is produced by the photo-initiator, which causes the base material polymerization and the photocrosslinking reaction to solidify the ink.

UV ink is selectively absorbed by the photon, and its drying is affected by the total energy of the emitted light of UV light source and the distribution of light energy of different wavelengths. Under the irradiation of UV light, the photo-polymerization initiator of UV ink absorbs a certain wavelength of photons and triggers the excitation state to form free radicals or ions. Then, through the transfer of energy between molecules, the polymeric prepolymer and photosensitive monomer are transformed into excited states, which produce charge transfer complexation. These complexes are constantly crosslinked and solidified into membranes.

365nm UV LED Light Curing Machine

The Characters of UV Ink Curing:

1.Instantly curing, high production efficiency.

2.No volatile solvent. There will be no solvent erosion and damage to print; Will not pollute the human body and environmental protection.

3.The ink concentration is stable, and it will not be cause by the difference of concentration.

4.Ink does not dry out, solvent-free stench.

5.The light curing speed is extremely fast, and the UV equipment is small and occupies little space.

6.The heat emitted of UV light does not cause damage to the hot print.

7.Transparent or semi-transparent ink, hardening speed and color effect.

  Parameters: 

Technical Data of the Irradiation Light Head:
Wavelength(±5nm)	365nm/385nm/395nm/405nm
Curing Area	Other Sized Available
Electronic Power	800w
Input voltage	90-260VAC 50Hz / 60Hz
Cooling method	Water cooling
Life	>10000H
Conveyor Speed	100-400mm Adjustable
Irradiation distance	10-100mm adjustable
Optic power	800mw/cm2 (10mm irradiation distance)
Recommend Irradiation Distance	10-100mm
Irradiation Area	360*20mm
Size of Irradiation Head	400*38*55mm
Weight	2kg