Why CPU makes so much money, but there is no CPU for life and maternity leave to sell in the market?

There used to be fake cpu, but it was sanctioned by patent law. In the 1990s, at the early stage of semiconductor development in Bao Dao, Taiwan-funded semiconductors headed by Lianhua Electronics started from a cottage. Lianhua Electronics relies on the CPU of mainstream game consoles such as Nintendo fcsfc Sega md to support the huge cottage game console industry in the mainland market. Yes, it has the shadow of your childhood. UMC's 6502 CPU was used by bully and Wenquxing.

According to anecdotal reports, Taiwan-funded semiconductors used to compete with Japanese manufacturers with knockoffs and finally lost. In addition, Lianhua Electronics also extended its talons? Intel? 486 CPU, UMC Green x86, was called "the first self-designed x86 processor in Taiwan history" after Lianhua Electronics improved the energy consumption of the chip. Lianhua Electronics was desperate to sell it publicly without Intel's authorization.

This incident directly led the US government to start sanctioning the semiconductor industry in Taiwan Province Province, so the two sides launched a protracted intellectual property litigation, and finally faced a series of intellectual property litigation and government pressure, forcing the Taiwanese government to set up an intellectual property protection law and department in 1999, and the history of Taiwan Province semiconductor shanzhai officially ended.

CPU is very expensive, so the cost will not be low. A wafer is bought from a wafer factory, and there is only one light plate, and the surface generally has an epitaxial layer of several microns. Of course, there are still hundreds of steps from wafer to CPU.

As we all know, mask aligner can only be bought from Holland. Although it is too expensive, there is still a queue. After lithography exposure is completed, alignment detection, size detection and other processes should be done. If there is a slight deviation, remove the photoresist and start over. These processes are all money.

Then etching is carried out, that is, patterns need to be made on silicon or other layers, and materials need to be etched with various plasmas or chemical reagents, which need to be precisely controlled, and it should be noted that every transistor and connection on the wafer must be completed in the same factory. In case of any deviation, it can only be scrapped and restarted, consuming real money.

In addition, the important links of CPU are grinding, cleaning, injection/diffusion, measurement, etc., so CPU will be sold very expensive, and the strong basic research and development strength is not possessed by ordinary manufacturers.