Pressure is gradually becoming important in manufacturing semiconductors due to semiconductor’s miniaturization. Under this circumstance, manufacturing equipment and material manufacturers as well as semiconductor manufacturers have begun to use PRESCALE in various applications such as “measuring polishing pressure in a Chemical Mechanical Polishing (CMP) equipment” ”checking pressure distribution of laminating press in manufacturing an Electrostatic chuck or a Ceramic heater” or ”measuring pressure distribution of a Molding machine” etc.
In this page, we will introduce some applications along the semiconductor manufacturing process. Of course, there are a lot of applications besides the followings, so if you want to measure surface pressure easily and at low cost, please feel free to request our samples.
A silicon wafer is a disc-shaped piece of high-purity silicon. Wafer size is generally 200mm/300mm.
Some semiconductor manufacturers are now considering 450mm as a next generation standard.
Since there are various kinds of dust or metal ions on the wafer immediately after purchase, they are removed with high-purity acid or alkali chemicals.
The insulating film and conductive film used for semiconductors are deposited on a wafer.
A circuit pattern is drawn (transferred) on a wafer with a reticle.
Checking the distribution of UV light irradiated on a photomask or a wafer. UVSCALE changes its surface color according to the amount of UV light and this allows you to confirm UV light distribution of the entire surface at a glance. So UVSCALE helps you check malfunctions of a UV lamp.
Some impurities such as phosphorus and boron which determine the electrical characteristics (P, N type) of semiconductors are implanted into the wafer.
The deposited films are removed excepting films under the pattern of the regist.
Ceramic products such as an electrostatic chuck or a ceramic heater are manufactured through a laminating press process; however adjustment of ceramics is very difficult due to their powder form. On the other hand, high parallelism of an electrostatic chuck or a ceramic heater is essential for a wafer to absorb them. So ceramic products manufacturers use PRESCALE to check the parallelism of their products or maintain their qualities.
- * The following picture is in case of an electrostatic chuck.
In deposition and etching process, a wafer adsorbs an electrostatic chuck , and it gets heated through an electrostatic chuck during these processes. Parallelism of an electrostatic chuck directly affects heat conductivity between a wafer and an electrostatic chuck, and this may cause bad effects on semiconductor’s quality. Thus, some semiconductor manufacturers check contact pressure between them with PRESCALE.
PRESCALE is used for developing, improving and or maintaining robot arms operating in factories. With the help ofPRESCALE, factory workers can correlate its color distribution or color density with the damage to the wafer, and they can develop and improve their products by using the correlation data.
A wafer is covered with insulation films which separate wirings by each layer.
A wafer surface is polished and flattened in order to facilitate subsequent processes.
PRESCALE is used to collect data for developing and improving CMP equipments or to maintain their operation in factories. They use PRESCALE to correlate its color distribution or color density with the damage to the wafer, and they develop and improve their products by using the correlation data.
A protection tape is attached on the circuit surface or a wafer in order to protect a circuit during back grinding.
PRESCALE is used to check whether pressure distribution is correct or not. In particular, some semiconductor manufacturers do this to check their equipments when some defects are found in their products during the back-end process.
The back side of a wafer is grinded to be thin overall.
A dicing tape is applied to a wafer in order to fix it.
A wafer is cut into many tiny tips.
UV scale is used to check the distribution of the total amount of the irradiated UV light. If UV light had irradiated sufficiently on a dicing tape, it would prevent the tape from coming off the wafer which can cause damage the wafer Thus checking the distribution of UV light on a whole surface of a dicing tape is very important.
A tip is mounted onto a metal lead frame.
PRESCALE is used to collect data for developing and improving suction nozzle or to maintain their correct operation in factories. PRESCALE can correlate its color distribution or color density with the damage to the wafer, and help develop and improve products by using the data.
A tip is connected to electrodes in the lead frame with gold wires.
PRESCALE is used to collect clamping pressure data to develop equipments.
A tip is molded to be a package with a resinous encapsulant.
PRESCALE is used to check pressure distribution and pressure range in molding equipments. Molding equipment manufacturers use this film to inspect their equipments’ quality before shipping them or submit this film to their client as a certification.
The product name or manufacturer name is marked on the package.
Tips inspected to be good products are shipped.
PRESCALE is used to indicate pressure distribution during a process of laminating a green sheet in manufacturing rigid substrates.
PREACALE is used to measure pressure distribution of vacuum laminating machines. Vacuum laminating machine manufacturers use this film for inspecting their machines’ quality before shipping, inspecting machines working in their clients’ factories or submitting films as certifications.
PRESCALE is used to check pressure distribution of PPI (Press Pack IEGT). This is one of quality inspections in PPI manufacturers.
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