Top 10 semiconductor in China introduce,list main products and website if have
1. SMIC (Semiconductor Manufacturing International Corporation)
– Main products: Integrated circuit (IC) design, manufacturing, testing, and packaging services
– Website: www.smics.com
2. Tsinghua Unigroup
– Main products: Memory products, semiconductor devices, and system integration services
– Website: www.tsinghuaunigroup.com
3. Huawei Technologies
– Main products: Semiconductor products for 5G telecommunications infrastructure, smartphones, and consumer electronics
– Website: www.huawei.com
4. ZTE Corporation
– Main products: Semiconductor components for telecommunications equipment, networking devices, and smartphones
– Website: www.zte.com.cn
5. Unisoc
– Main products: System-on-chip (SoC) solutions for smartphones, IoT devices, and automotive applications
– Website: www.unisoc.com
6. Yangtze Memory Technologies Co. Ltd.
– Main products: Memory chips for data storage and computing applications
– Website: www.ymtc.com
7. JCET (Jiangsu Changjiang Electronics Technology)
– Main products: Semiconductor packaging and testing services for ICs, LEDs, and other electronic components
– Website: www.jcetglobal.com
8. Goodix Technology
– Main products: Fingerprint sensors, touchscreen controllers, and other semiconductor products for mobile devices
– Website: www.goodix.com
9. GigaDevice Semiconductor
– Main products: Flash memory chips, microcontrollers, and other semiconductor products for consumer electronics and industrial applications
– Website: www.gigadevice.com
10. BOE Technology Group
– Main products: Display panels and semiconductor components for TVs, monitors, smartphones, and automotive displays
Types of semiconductor
Semiconductors are materials with properties that lie between those of conductors and insulators. There are two main types of semiconductors: intrinsic and extrinsic.
Intrinsic semiconductors are pure semiconductors, typically made of silicon or germanium. These materials have a very small number of free charge carriers, which are primarily electrons and holes generated by thermal excitation. At room temperature, only a small fraction of atoms in an intrinsic semiconductor are ionized, meaning there are relatively few free charge carriers available for conduction.
Extrinsic semiconductors are doped semiconductors, where small amounts of impurities are intentionally added to the crystal lattice to increase the number of charge carriers. Two common types of extrinsic semiconductors are n-type and p-type.
N-type semiconductors are doped with donor atoms, such as phosphorus, which have an extra electron compared to the host semiconductor material. These donor atoms create additional free electrons in the crystal lattice, increasing the conductivity of the material.
P-type semiconductors are doped with acceptor atoms, such as boron, which have one less electron than the host semiconductor material. These acceptor atoms create additional holes (positively charged absence of electrons) in the crystal lattice, allowing for the movement of positive charge carriers.
By manipulating the doping and properties of semiconductors, electronic devices such as diodes, transistors, and integrated circuits can be created. The ability to control the flow of charge carriers in semiconductors is essential for the functionality of modern electronics and technology.
