Photoresist belongs to the semiconductor plate.
Photoresist is one of the key materials for microfabrication in the field of electronics, and is a light-sensitive mixed liquid composed of photopolymer resins, sensitizers, and solvents, among other major components. In the ultraviolet light, deep ultraviolet light, electron beam, ion beam and other light or radiation, its solubility changes, the appropriate solvent treatment, dissolve the soluble part, and finally get the desired image.
Categorized by display effect, photoresist can be divided into positive photoresist and negative photoresist. According to the exposure wavelength classification, photoresist can be divided into ultraviolet photoresist (300 ~ 450nm), deep ultraviolet photoresist (160 ~ 280nm), extreme ultraviolet photoresist (EUV, 13.5nm), electron beam photoresist, ion beam photoresist, X?ray photoresist and so on.
By industry, it can be divided into PCB photoresist, panel photoresist, semiconductor photoresist. At present, China's local photoresist to ?PCB? with photoresist-based, flat panel display, semiconductor photoresist supply accounted for a very low percentage of the market speculation to the panel display and semiconductor this piece of the main.
Photoresist applications:
1, liquid rocket engine laminar plate injector on the metal plate sheet type holes on both sides of the precision processing, as well as liquid propellant pre-packaged storage tanks on the diaphragm valve metal sheet scoring.
2, Preparation of metal film electrodes on a diamond table and preparation of gold electrodes of specific sizes and shapes on polarized polyvinylidene difluoride (PVDF) piezoelectric films.
3, the production of a variety of gratings, photonic crystals and other micro-nano optical components. As early as the mid-1980s, Ⅲ ~ V compound optoelectronic device preparation used laser holographic lithography, which is the most studied holographic lithography is used to directly form the grating structure of the Distributed Feedback (DFB) semiconductor lasers.
4, the medical field also use lithography to manufacture microscopic medical devices such as microneedles and biochips.