High end PCB design, PCB customization, PCB proofing, HDI PCB manufacturer
Consultation hotline
NEWS CENTER
Introduction to the principle of lithography machine
Lithography machine is the flower of the modern optical industry and the core technology in the semiconductor industry.
There may be many people who cannot personally understand the important position of the lithography machine. The lithography machine is a machine that manufactures chips. If there is no lithography machine, we will not be able to make chips, and naturally we will not have our current mobile phones. , Computer.
The lithography machine is the core equipment for chip manufacturing, and can be divided into a lithography machine for producing chips, a lithography machine for packaging, and a projection lithography machine for LED manufacturing.
The core principle of the lithography machine is a lens group. In terms of accuracy, we first have a concept: the line accuracy of our chip has been developed to the level of 10nm, and the larger atomic diameter is nearly 1nm. We put the chip under an electron microscope. You can clearly count how many atoms are on each line. "Adjusting the diopter" is a typical geometrical optics (elementary optics) concept, which is far from achieving this precision.
In geometric optics, we think that light is a "ray", so you can use lenses to zoom in and out. As people have a deeper understanding, they have discovered that light is actually a continuous "light wave" that does not travel in a straight line. Later, people discovered that light is a "particle" (for which Einstein won the Nobel Prize). Later, people discovered that light particles have "wave-particle duality" and also have quantum effects. Throughout the process, the physical properties of light have not changed. But as people observe more and more detailed and precise, they gradually discover the characteristics of light.
Do you know how many principles to follow in the design of PCB stack-up?
One of the most fundamental issues to consider when designing a PCB (printed circuit board) is how many routing layers, ground planes, and power planes are required to achieve the desired function of
Current situation and analysis of copper foil price of PCB board
Since the second half of last year, benefiting from the rapid development of electronics, new energy vehicles and 5G industries, the copper foil industry has entered a period of high growth, and the s
PCB circuit board design, which important points should be checked later
[Weiwenxin PCBworld] When a PCB board has completed the layout and wiring, and the connectivity and spacing are checked and no problems are found, is a PCB completed? Of course, the answer is no. Many
Scan the mobile terminal
Copyright © 2024 Shenzhen super speed circuit Co., Ltd. all rights reserved