4inch LED Sapphire substrate

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Product Description

Overview

For convenience of positioning, the substrates are supplied with one or two additional (marking) profile planes. The C plane is used for the coating Sapphire are used. Sapphire substrates are employed in sensors.

measuring pressure, mass, and humidity, as well as in IR-radiation detectors (HgCdTe films on sapphire) and other devices.

Although there are lots substrates which are regarded as potential materials to replace Sapphire Substrate, it is still dominated in the substrates (for GaN LED growth) market, because of its reasonable price and relatively low mismatch. Zhongju is capable of processing substrates according to customer needs. Currently, our sapphire substrate productions ranges from 2 to 12 inches with high quality and accurate orientation.

Table 1 Size of substrates

	2 inches Substrates	4 inches Substrates	6 inches Substrates
Diameter (mm)	50.9±0.1	100.1±0.1	150.1±0.1
Primary Flat Length (mm)	16±1	31±1	47.5±1

Table 2 Specification of substrates

Material	High purity Single Crystal Sapphire
Surface Orientation	C-plane ± 0.1°
Primary Flat Orientation	A-plane ± 0.5°
Broken edge length	≤3mm
Crack	0
Defect	No inclusion，twin，or boundary
Bubble and cloud	Dense bubbles, clouds, and scattered bubble marked and counted as defects by length
EPD	≤1000 pits/cm²

Product Categories : Sapphire Substrate > 4inch Sapphire Substrate

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