Single-Crystal Sapphire for Multi-Industry Electronic Use

Unit Cell of Sapphire. Image Credit: Kyocera International, Inc.

Sapphire Single-Crystal Growth Methods

Kyocera has multiple sapphire crystal growth technologies, such as Edge-Defined Film-Fed Growth (EFG) method and Czochralski (CZ) method. We select an effective and efficient manufacturing method according to the customers’ requirements and product shapes.

EFG Method. Image Credit: Kyocera International, Inc.

Image Credit: Kyocera International, Inc.

Features of the EFG Method

Large-size material: The sizing up of materials makes a wider variety of uses and applications possible.

Manufacturing of a single sapphire crystal in any sectional shape requested: Cutting operations can be eliminated, resulting in a cost reduction since any desired sectional shape can be obtained in the form of ribbons, tubes, rods, and more.

Regulation of crystal orientation: Any axis and plane can be produced by instituting proper control during crystal growth.

Features of the CZ Method

High-Volume Production: Due to the schematics of the CZ method, this single-crystal sapphire growth method allows for for large volume production.

A Great Option for Circular Shapes: Common products created by the Czochralski (CZ) method include sapphire wafers, substrates, and other circle-shaped or cylindric products, such as tubes.

Image Credit: Kyocera International, Inc.

Manufacturing Process for Single-Crystal Sapphire

Image Credit: Kyocera International, Inc.

Shape and Specifications

Kyocera Fine Ceramics group can produce various shapes of sapphire products, such as hollows or multi-holes. Please contact us for more details on achievable shapes and specifications.

Image Credit: Kyocera International, Inc.

As-Grown Materials

Image Credit: Kyocera Corporation

Characteristics of Single Crystal Sapphire

Source: Kyocera International, Inc.

These figures are representative. Each Crystal Orientation has different characteristics.

Image Credit: Kyocera International, Inc.

Notes:

The transmittance range varies depending on the thickness of the Sapphire Products Interfacial Reflection included

Thickness: 1 mm

Standard Dimensional Tolerance

Source: Kyocera International, Inc.

Machining accuracy: Tube 1.A.10.A. and standard tube thickness tolerance…±0.25.Hole diameter and standard pitch tolerance…±0.1

Sapphire Products

Substrate

Image Credit: Kyocera Corporation

Application

High brightness LED

Thin film substrate, piezoelectric semiconductor, superconductor, and HB-LED semiconductor

Precision resistor, MR sensor

Optical devices

HIC thin film

Single-crystal sapphire is a widely used substrate material for blue, green, ultraviolet and white LEDs. This substrate possesses outstanding qualities as a base for GaN deposition, offering remarkable mass production capabilities. Furthermore, it is well- equipped to meet the demands of larger-scale requirements in the future.

Thanks to its exceptional thermal and chemical durability and lattice alignment, which match with a wide range of semiconductor materials, single-crystal sapphire can also be utilized as a base substrate in thin film deposition.

2”-8” substrate for Optical Devices. Image Credit: Kyocera International, Inc.

Standard Dimension and Tolerance. Source: Kyocera International, Inc.

Specifications other than the above are available. Available sizes are dependent on a crystal orientation. Sizes and tolerances other than the above table are also available under customer requirements.

Application Examples. Image Credit: Kyocera International, Inc.

Semiconductor Process Equipment Parts

Image Credit: Kyocera International, Inc.

Application

Handling Arm

Microwave Entrance Tube

Dummy Water

Window

Vacuum Chuck

1.Image Credit: Kyocera International, Inc.

2. Image Credit: Kyocera International, Inc.

3. Image Credit: Kyocera International, Inc.

4. Image Credit: Kyocera International, Inc.

Because of its high anti-plasma and high anti-heat qualities, it is used as a different semiconductor.

Optical Products for LCD Projectors

Applications

Sapphire Plate

Holder Assembled

Polarizing Film Attached

Dichroic Filter

LCD Projector

Dust Control Plate

Due to its excellent thermal conductivity and optical qualities, sapphire material achieves high brightness and good picture quality for LCD projectors. Dichroic filters or other coatings are available to prevent reflections. Standard sizes are available to fit in a variety of LCD panels.

JP Patent No: 3091183, No: 3443549. US Patent No: 6577375, No: 6642989. Image Credit: Kyocera International, Inc.

Selected Transmission Layer for Wave Length Optical Transmission. Image Credit: Kyocera International, Inc.

AR Coat External Transmission. Image Credit: Kyocera International, Inc.

Optical Products

Image Credit: Kyocera International, Inc.

Application

POS Scanner Window (SOG)

Window

Cap for Optical Communication

Infrared Measuring Device Window

Coin Sensor

Light Receiving Window Accelerating Tube

Lamp External Tube

High-Pressure Sodium, Xenon, and Ultra Pressure Mercury Metallic Halide

Others

Image Credit: Kyocera International, Inc.

Application

Fiber Bar Guide

Watch Window

HDC Resonator Rod

Insulating Plate and Rod

MMR Protection Tube

Thermocouple Protection Tube

Single Crystal Material Sheet Holder

Biomaterial (BIOCERAM^®)