Sapphire for LEDsSapphire for LEDs Sapphire ingots are mainly used for high brightness LED substrates (2-6 inches). LED applications: lamps of all types, backlit TVs, laptops, mobile phones, outdoor advertising and etc. LED is the key sapphire application in our days. LED substrates are the most effective sapphire application in comparison of cost and quality.


Sapphire for microelectronicsSapphire for microelectronics Sapphire substrates are the largest sapphire application. Sapphire substrates are used for semiconductor film epitaxy (GaN, Si, AlGaN and others) and for producing of integrated circuits. The sapphire substrates advantages are inertness, mechanical load and high temperature operation ability, large diameter. Therefore sapphire substrates are used even when lattice parameters don’t coincide with the heteroepitaxial structure parameters.


Sapphires for opticsSapphires for optics Sapphire is widely used for optic and optoelectronic devices such as: observation windows (with dimensions from several millimeters to several hundred millimeters) used on land, underwater and in space; lenses and prisms; all temperature LEDs; focusing cones; high-temperature protective covers for thermocouples; special lamp shells; navigation device protective caps and many others.


Sapphires for medical equipmentSapphires for medical equipment Sapphire applications in medicine: implants, surgery and medical devices. Sapphire can be implanted into the body tissues because it doesn’t react with organic acids and tissues, sapphire surpass all construction materials in inertness and biocompatibility.


Sapphires for watchesSapphires for watches Synthetic sapphire is used for watch jewels manufacturing (axial and friction bearings). It is an affordable, stable quality, solid and durable material for friction units. Watch glasses made of light-colored and wait sapphire are used by all known watch manufacturers. The matter is not just in fashion, there are no scratches on the sapphire glasses.


Techsapphire Ltd.

Furnaces for crystal growing by modified Kyropoulos method (GOI).

1. Equipment

a) Furnaces for crystal growing by modified Kyropoulos method (GOI).

Diameter/mass of crystal (mm/kg) 200/32 300/65 300/85 300/100
Maximum possible total power consumption for melting  (kVA) 55 65 75 85
Real power consumption during the technological process (kVA) 38.5 47.7 65 70
Supply mains (V, AC) 380/480, 3 phase (depends customer’s requirement)
Heating method resistive (tungsten heater)
Heater’s supply voltage (V) 12 AC/DC, 24 AC/DC (depends modification)
Control system PLC (programmable controller)

Provides automation overall crystal growing process, except seeding

Growing process supervision
  • on the control panel, near the furnace
  • from the dispatcher’s PC in the control room
  • online via internet
Controlled parameters in the crystal growing program
  • heater voltage, current & power
  • growing crystal mass & weight increment in time
  • temperature of cooling water, chamber’s heat-sink value
  • crystal pulling & traverse speed
  • vacuum level in the growing chamber
Cooling system Circulating water in closed system, under the automation control of software
Dimensions (WxLxH, mm) 2200x2000x2300

Sapphire crystal growth station (furnace) with DC power supply to the heater (IGBT)

Sapphire crystal growth station (furnace) with AC power supply to the heater (SCR controller)

We grow optical quality sapphire crystals weighing 32kg with a diameter of 200mm; 65,85,100kg with a diameter of 300mm;

b) Control system and software for crystal growth process by modified Kyropoulos method (GOI);

1. Control system and software development for sapphire crystal growth equipment according to customer’s specifications.

2. Technical support and software update.

2. Tool sets.

a) Hot zones for growth and annealing stations.

1. Self-designed hot zones are made of various materials for long life, high energy efficiency and low maintenance costs.

2. Hot zone consumable parts in accordance with customer’s drawings.

3. Self-designed or customized heating units made of different materials.

b) Crystal processing tool sets

1. Cutting, coring, grinding and optical orientation measuring equipment design and manufacturing.