The relationship between photoresist and chip The role of photoresist in chip manufacturing

Relationship between 1. photoresist and chip

Chip and photoresist are two indispensable elements in the electronics industry, and they are closely related. Chips are the core components of today's computers and other electronic devices, and are the basis for information processing and storage. Photoresist is one of the important tools for manufacturing chips, plays a key role in manufacturing accuracy and speed, and is an indispensable step in chip manufacturing.

1, Chip Design

The entire production process of the chip needs to go through multiple links such as design, processing, and manufacturing. First of all, in the design stage of the chip, computer-aided design software is needed to generate the model diagram of the chip. In the model diagram, the shape, circuit and circuit of the chip have been determined. After the design is completed, the model needs to be converted into graphical data, which is the process of chip CAD.

2. Chip preparation

The main work of chip preparation includes lithography, mask making, ion implantation, chemical etching and so on. Among them, lithography is the most important part of chip preparation. Photoresist is a material that must be used in this link. Through the steps of photoresist coating, exposure, development, etc., fine structures can be formed on the surface of the chip, including wires, transistors, etc. The quality of photoresist directly affects the processing accuracy and quality of the chip.

3. Application of photoresist

The photoresist will be coated on the substrate used to fabricate the chip. The substrate is typically a silicon wafer. During processing, the photoresist will be coated in a very thin layer, usually only 1-2 microns. After the photoresist is coated, it will be exposed on the lithography machine. An exposure light source irradiates the photoresist to form a mold pattern of a chip. After development, the photoresist is removed, exposing a small piece of the expected structure on the chip substrate. The quality of photoresist and the accuracy of application technology are directly related to the quality and accuracy of the final chip, and are a key process in the manufacture of chips.

From chip CAD, to design, processing, manufacturing and other links, photoresist is everywhere. It is a supporting role in chip manufacturing, but the role is very important. The chip is getting smaller and smaller, and the requirement for precision is getting higher and higher, which makes the photoresist material and processing technology are constantly improving and innovating.

The Role of 2. Photoresist in Chip Manufacturing

Photoresist has a wide range of applications in chip manufacturing, including the following aspects:

1. Chip pattern formation

The most important application of photoresist is to form the desired pattern on the surface of the chip. Through the exposure and development process of the photoresist, a micron-level pattern can be formed on the surface of the chip. These patterns can be used to manufacture electronic components such as transistors, capacitors, and inductors, and can also be used to manufacture micro-nano devices such as MEMS devices and biochips.

2. Chip surface protection

In the chip manufacturing process, photoresist can also be used to protect the surface of the chip. In the process of chip manufacturing, the surface of the chip needs to be processed and treated many times, and these processes and treatments will cause damage to the surface of the chip. In order to protect the surface of the chip, a layer of photoresist can be coated before processing and treatment, and the photoresist can be removed after the processing and treatment are completed. This can effectively protect the chip surface and prevent it from being damaged.

3. Chip surface modification

Photoresist can also be used for chip surface modification. In the process of chip manufacturing, it is necessary to carry out many chemical and physical treatments on the surface of the chip, which will change the chemical and physical properties of the chip surface. In order to make the surface of the chip have specific chemical and physical properties, a layer of photoresist can be coated on the surface of the chip, and specific chemical substances and functional materials can be added to the photoresist. In this way, the chip surface can be made to have specific chemical reactivity, biocompatibility, optical properties, etc.