Renesas Electronics Corporation

Renesas Technology Corp.

Asahi Glass Company, Limited

Takuya Hagiwara

Mamoru Terai

Takeo Ishibashi

Hiroshi Fukuda

Takahiro Maruyama

Masahiro Tadokoro

Tatsunori Murata

Takuya Maruyama

Yoko Takebe

Hirokazu Saito

Osamu Yokokoji

Akemi Moniwa

Tetsuro Hanawa

Miwako Ishibashi, Legal Representative

Mineko Adachi

Keitaro Katabuchi

A manufacturing method of a semiconductor device includes a step of preparing a semiconductor substrate having a first main surface and a second main surface, a step of forming a recess in the first main surface and embedding an insulating film in the recess, a step of forming a polysilicon film on the insulating film, a step of forming an interlayer insulating film on the first main surface so as to cover the insulating film and the polysilicon film, and a step of forming a first contact hole and a second contact hole. The semiconductor substrate has a first impurity diffusion region formed in the first main surface, and a second impurity diffusion region in contact with a portion of the first impurity diffusion region, the portion being closer to the second main surface.

Manufacturing method of semiconductor device

A method of manufacturing a semiconductor device includes forming a reference pattern in an inspection pattern formation region, forming a first mask layer over a semiconductor substrate, while forming a first inspection pattern in the inspection pattern formation region, and measuring a first amount of misalignment of the first inspection pattern with respect to the reference pattern. The method further includes implanting ions into the semiconductor substrate using a first mask layer, removing the first mask layer and the first inspection pattern and then forming a second mask layer over the semiconductor substrate, while forming a second inspection pattern in the inspection pattern formation region, and measuring a second amount of misalignment of the second inspection pattern with respect to the reference pattern. In plan view, the second inspection pattern is larger than the first inspection pattern and covers the entire region where the first inspection pattern is formed.

Method of manufacturing semiconductor device

The reliability of a semiconductor device is improved. In a manufacturing method, a film to be processed is formed over a circular semiconductor substrate, and a resist layer whose surface has a water-repellent property is formed thereover. Subsequently, the water-repellent property of the resist layer in the outer peripheral region of the circular semiconductor substrate is lowered by selectively performing first wafer edge exposure on the outer peripheral region of the semiconductor substrate, and then liquid immersion exposure is performed on the resist layer. Subsequently, second wafer edge exposure is performed on the outer peripheral region of the circular semiconductor substrate, and then the resist layer, on which the first wafer edge exposure, the liquid immersion exposure, and the second wafer edge exposure have been performed, is developed, so that the film to be processed is etched by using the developed resist layer.

The present invention makes it possible to improve the reliability of a semiconductor device. In a manufacturing method of a semiconductor device according to an embodiment, when a resist pattern is formed over a cap insulating film comprising a silicon nitride film, the resist pattern is formed through the processes of coating, exposure, and development treatment of a chemical amplification type resist. Then the chemical amplification type resist is applied so as to directly touch the surface of the cap insulating film comprising the silicon nitride film and organic acid pretreatment is applied to the surface of the cap insulating film comprising the silicon nitride film before the coating of the chemical amplification type resist.

In a method of manufacturing a semiconductor device using high-NA ArF liquid immersion exposure of a photoresist, a layer arrangement is provided capable of increasing reflection of a reference beam in an oblique incidence autofocus optical system, thereby enhancing autofocus and making it possible to reduce variation in the diameter of a contact hole.

Method of semiconductor manufacture utilizing layer arrangement to improve autofocus

To improve the manufacturing yield of semiconductor devices. Over a semiconductor wafer, a film to be processed is formed; over that film, an antireflection film is formed; and, over the antireflection film, a resist layer is formed. Then, the resist layer is subjected to liquid immersion exposure, and a development and rinsing process to form a resist pattern. After that, the antireflection film and the film to be processed are etched sequentially using the resist pattern as an etching mask. In the development process of the resist layer, the antireflection film is exposed from parts from which the resist layer has been removed by the development process. When performing a rinsing process after the development, the water repellent property of the surface of the antireflection film exposed from the resist layer is not lower than the water repellent property of the surface of the resist layer.

A developing method for immersion lithography is provided, realizing a process that is simple and low-cost and enables high repellency sufficient to allow high-speed scanning. The developing method for immersion lithography improved by inexpensive material without introducing any new facility, a solution to be used in the developing method, and an electronic device formed by using the developing method are provided. The developing method for immersion lithography is a method of developing for immersion lithography of an electronic device with a resist containing a surface segregation agent and chemically-amplified resist, including the step of development with alkali immersion, characterized by the dissolving and removing step, conducted using a dissolving and removing solution that selectively dissolves and removes the surface segregation agent of the resist.

Developing method for immersion lithography, solvent used for the developing method and electronic device using the developing method

In an exposure step, a combination of a first photomask and a second mask is used. The first mask has a real pattern corresponding to the pattern actually formed on the film to be processed, and a dummy pattern added for controlling pattern pitch in the first photomask within a prescribed range; and the second photomask has a pattern isolating a real-pattern-formed region from a dummy-pattern-formed region. In forming the pattern, after forming a film to be processed on a substrate, a first mask is formed on the film to be processed,by lithography, using the first photomask, and a second mask is formed on the film to be processed, by lithography, using the second photomask. Thereafter, the film to be processed is etched and removed using the first and second masks as masks to form the pattern.

Method for manufacturing a semiconductor device

The present invention relates to a method of forming a resist pattern for obtaining an electronic device in which a development defect is eliminated, and aims at providing a process that is simple and low-cost, and can impart a high hydrophobicity capable of high-speed scan. It relates to a method of forming a resist pattern including the steps of: providing immersion exposure to a resist film; solubilizing the resist film subjected to the immersion exposure in an alkaline developer; developing the resist film solubilized in the alkaline developer by alkali immersion; and performing a deionized water rinse treatment on the developed resist film in this order, wherein the step of solubilization in the alkaline developer is performed by exposing the resist film subjected to the immersion exposure to ozone gas without irradiating ultraviolet rays (hereinafter, sometimes referred to as ozone treatment).

Method of forming resist pattern

It is an object of the present invention to provide a water repellant composition for a substrate to be exposed which inhibits the back side of a substrate to be exposed from being contaminated by an immersion liquid, can improve adhesion between a film to be processed and an organic film directly overlying that film to inhibit film peeling, and has excellent workability, a method for forming a resist pattern, an electronic device produced by the formation method, a treatment method for imparting water repellency to a substrate to be exposed, a water repellent set for a substrate to be exposed, and a treatment method for imparting water repellency to a substrate to be exposed using the same. A water repellent composition for a substrate to be exposed including at least an organosilicon compound represented by the following general formula (1) and a solvent is used.  In the formula, Ris a monovalent organic group having 14 to 30 carbon atoms, each R, R, and Ris independently a monovalent organic group or a hydrolyzable group having 1 to 10 carbon atoms, and at least one of R, R, and Ris a hydrolyzable group.

Water repellant composition for substrate to be exposed, method for forming resist pattern, electronic device produced by the formation method, treatment method for imparting water repellency to substrate to be exposed, water repellant set for substrate to be exposed, and treatment method for imparting water repellency to substrate to be exposed using the same

In an exposure step, a combination of a first photomask and a second mask is used. The first mask has a real pattern corresponding to the pattern actually formed on the film to be processed, and a dummy pattern added for controlling pattern pitch in the first photomask within a prescribed range; and the second photomask has a pattern isolating a real-pattern-formed region from a dummy-pattern-formed region. In forming the pattern, after forming a film to be processed on a substrate, a first mask is formed on the film to be processed, by lithography, using the first photomask, and a second mask is formed on the film to be processed, by lithography, using the second photomask. Thereafter, the film to be processed is etched and removed using the first and second masks as masks to form the pattern.

Method for forming pattern

In an exposure step, a combination of a first photomask and a second mask is used. The first mask has a real pattern corresponding to the pattern actually formed on the film to be processed, and a dummy pattern added for controlling pattern pitch in the first photomask within a prescribed range; and the second photomask has a pattern isolating a real-pattern-formed region from a dummy-pattern-formed region. In forming the pattern, after forming a film to be processed on a substrate, a first mask is formed on the film to be processed, by lithography, using the first photomask, and a second mask is formed on the film to be processed, by lithography, using the second photomask. Thereafter, the film to be processed is etched off and removed using the first and second masks as masks to form the pattern.

Growing community of inventors

Tokyo, Japan

Takuya Hagiwara