extension, chip, encapsulation - reveal UVLEDTEK Full Industry Chain Technology
As a professional UV LED chip, Packaging and Light Source System Suppliers, Youwei Star has a PhD program based on, postdoctoral, A team composed of senior engineers and other senior technical personnel
As a professional UV LED chip, Packaging and Light Source System Suppliers, Youwei Star has a PhD program based on, postdoctoral, A high-level R&D technology team composed of senior engineers and other senior technical personnel.
and -
epitaxial growth-Chip preparation-device packaging-Light source system
Complete semiconductor ultraviolet LED R&D production line
For a long time, Youweixing focuses on ultraviolet radiation LED Industrial application. Different from the principle of traditional mercury lamps, UVLED It's using p-n Non equilibrium carrier radiation recombination near the junction for luminescence, This eliminates the problem of energy waste caused by thermal effects, At the same time, it is also more sturdy and durable, It also does not produce electromagnetic pollution.
UVLED According to the structure, it can be divided into horizontal types, Three types: vertical and inverted, Youwei Star UVA and UVC The light sources are respectively located in SuzhouOur own epitaxial chip factoryHorizontal and inverted products produced.
Youwei Star UVA-LEDThe preparation process of the light source can be summarized as follows:
Epitaxial growth of buffer layers on sapphire substrates in sequence, n n-type region, Active region, EBL, p n-type region;
will be p Epitaxial surface evaporation of the type region ITO Transparent electrodes and metal electrodes, Then etch one corner of the epitaxial wafer to n Type area and prepare electrodes on this platform;
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Separate packaging. This process involves epitaxy, annealing, evaporation, polishing, photolithography, etching, Multiple processing techniques such as grinding.
The epitaxial substrate is the basis for material growth
It is to prepare high-quality productsUVLEDThe primary condition
Youwei Star UVC-LEDLight source preparation:
It is a horizontal type LED Inverted onto a substrate with high thermal conductivity, Good heat dissipation performance, It is also easier to change the series parallel relationship between devices.
Lies in its key processing technology - Flip chip, A technology for connecting device electrodes and substrate wiring layers: Firstly, utilizing electron beam evaporation technology to achieve metallization of the substrate wiring layer surface, Reusing wafer ball implantation mechanism to prepare metal bumps, Finally, the welding is completed using fully automated flip chip welding equipment.
extension:
Method of depositing single crystal thin films with specific crystal orientations on the surface of a single crystal substrate.
photolithography process:
Copy the required graphics onto the epitaxial substrate, And use etching technology to remove unnecessary parts, Complete the final graphic.
1. Apply photoresist evenly on the surface of the epitaxial wafer (Substances that can solidify or melt under specific lighting conditions) And bake it;
2. Position the mask template on the epitaxial wafer and expose it;
3. Wash off unwanted photoresist (development) , Apply a hard film treatment to the required photoresist.
4. After checking the graphics for accuracy, perform etching treatment, Remove the remaining photoresist when all is completed.
etching:
Using corrosive gases or liquids to corrode wafers.
Vapor deposition process
welding UVLED The electrode.
encapsulation
Directly affecting the light output rate and reliability of the device, It is a key process for device preparation. The encapsulation process can usually be divided into five steps:
1. Prepare chips and brackets;
2. die attach;
3. bonding;
4. seal;
5. Cutting and testing.
Youweixing with full industry chain technology, Being able to provide for partnersHigh performance near ultraviolet LED Curing equipment, High quality deep ultraviolet LED chip/Lamp beads and services, Creating rich solutions for the UV industry with outstanding technological innovation capabilities, Building an open and win-win product ecosystem, Promote the construction of industrial standards, boostglue, paint, UV curing inkAnd the air, water, Surface sterilization achieved in various industries LED Industrialization upgrade.
- 2008 year 03 moon -
- 2015 year 10 moon -
UVLEDTEKg begins to develop optical fibers, Offset printing, label, Liquid Crystal Curing Light Source System, Implementing research and development "Peak Climbing Plan" , Brave Climbing UV High precision and cutting-edge fields of solidification;
Compared to domestic UV Leading ink supplier reaches strategic partnership, Batch promotion of offset printing light sources, as of 2019 year 7 Installed monthly 110 Above the stage, Market share of domestic offset printing machine modification NO. 1;
The company's first high-power LCD curing surface light source was successfully installed in one go, Mark the successful entry of the company's products LCD cell Duan Craft, For the first time in China;
UVLEDTEKg label flexographic printing curing light source system breaks through the industry's highest printing speed bottleneck with exclusive process technology, Open the door to cooperation with well-known brand label machine manufacturers;
Youwei Star UV label, Offset printing, Expansion of LCD and other light source system markets to Europe, Japan, Thailand, Malaysia, Türkiye, Vietnam, Brazil and other countries, Rapid growth in overseas performance.
Wuhan UVLEDTEKg Technology Co., Ltd
address: Wuhan Donghu New Technology Development Zone Huagong Science and Technology Park Modern Service Industry Base 1 R&D Building B seat 5 building
postal code: 430223
Contact Number: (+86) 027-87971689
Contact email: sales@uvledtek. com (sales)
