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Substrates

Substrates are an important component of LED production, as they provide a foundation upon which the LED structures can be built. The choice of substrate material can have a significant impact on the performance and cost of the LED. The most commonly used substrate for LED production is sapphire, which is a crystalline form of aluminum oxide (Al2O3). Sapphire has a number of properties that make it well-suited for LED production, including: High thermal conductivity: Sapphire has a high thermal conductivity, which allows it to dissipate heat generated by the LED structures during operation. High mechanical strength: Sapphire is a hard, durable material that can withstand the high temperatures and pressures used in the LED growth process. Good optical transparency: Sapphire is transparent to a wide range of wavelengths, allowing light generated by the LED structures to pass through the substrate and be emitted from the LED. Cost-effectiveness: Sapphire is relatively inexpensive compared to other substrate materials. Other substrate materials that have been used in LED production include silicon carbide (SiC) and silicon (Si). SiC has a higher thermal conductivity than sapphire, which makes it useful for high-power LED applications. Si is a widely used substrate material for electronics manufacturing, but its lower thermal conductivity and mismatch with the lattice constant of GaN make it less ideal for LED production than sapphire or SiC. In addition to these materials, researchers are investigating the use of other substrates, such as diamond and aluminum nitride (AlN), that may offer even better performance and cost advantages for LED production.

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Kyocera Global Ltd

, JP Manufacturer

Ceramic packages, organic packages and module substrates, HDI PCB, PWB, single crystal sapphire products, semiconductor/LCD processing equipment

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Korea Circuit Co Ltd, KCC

, AF Manufacturer

IC packages substrate and HDI PCB, rigid-flex PCB.

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Kinsus Interconnect Technology Corp.

, TW

IC substrates and HDI PCB.

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Austria Technologie & Systemtechnik AG, AT&S

, AT Manufacturer

High-end printed circuit boards and IC substrates.

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ECOCERA Optronics Co., Ltd

, TW Manufacturer

direct copper ceramic (DPC) circuit board such as LEDs Al2O3/AlN fine ceramic substrates , Flesh light module DPC , IR/UV , lighting ,Laser and Automotive used DPC substrate and sub-mount.

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LG Innotek, LGIT

, KR Manufacturer

IC package substrates. Display solutions

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Astellatech, Inc

, JP Manufacturer

Sputtered films on various substrates. Technical consulting on solar cells and vacuum and plasma process. Experimental substrate cutter, 4-point probe cable.

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SiPlus Co., Ltd

, TW Manufacturer

Thin film substrates: Thin film RDL on 12” glass, 2.2D thin film integrated substrate. Substrates and process for 2.0D, 2.1D, 2.2D, 2.3D, and molded thin film RDL technology know-how and IP licensing.

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DAISHO DENSHI CO.,Ltd

, JP Manufacturer

Semiconductor IC package substrates, cavity PCB boards.

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San'an Optoelectronics

, CN Manufacturer, Custom Manufacturer

R&D, production and marketing of full-color, ultrahigh-brightness LED epitaxial wafers, chips, III-V compound semiconductors, microwave communication IC and power devices and optical communication components.

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