摘要:
Provided is a planarizing method in which a planarization with high flatness can be performed, without being restricted by the distribution of film thickness in the applied resist film. The planarizing method comprises the steps of: forming a resist film on a film to be planarized formed on a substrate; exposing the resist film with the amounts of exposure light in respective sections into which an area in which the film to be planarized is formed is divided, the amounts of exposure light being determined so as to realize film thicknesses to be left for planarization of the resist film in the respective sections; developing the exposed resist film, to form a resist film pattern with a controlled distribution of film thickness; and etching the resist film pattern and the film to be planarized, until eliminating the thickness amounts to be eliminated of the film to be planarized.
摘要:
An alignment method of mask patterns includes forming a first layer by transferring a first mask pattern onto a wafer, forming a second layer by transferring a second mask pattern onto the first layer, and particularly a first alignment step, forming the first layer, which performs alignment for minimizing offset between a center position of the wafer and a center position of the first mask pattern and a residual rotation error between the wafer and the first mask pattern and additional alignment for compensating an amount of possible deviation of superposition of the second layer pattern on the first layer pattern, and a second alignment step, forming the second layer, which performs only alignment for minimizing offset between a center position of the first layer pattern and a center position of the second mask pattern and a residual rotation error between the first layer pattern and the second mask pattern.
摘要:
There is a thin-film magnetic head provided, which comprises a perpendicular recording head portion including a thin-film coil adapted to generate a magnetic flux, and a main magnetic pole layer that extends rearward from a recording medium opposite plane facing a recording medium and has a main magnetic pole adapted to release a magnetic flux produced at the thin-film coil toward the recording medium. A given concave groove form that is more constricted as the lower end draws nearer is provided at or near the flare point of the front end of the main magnetic pole, so that the flow of the magnetic flux through the main magnetic pole is focused on the upper end edge (gap portion), thereby improving overwrite performance and holding back the occurrence of pole erasure.
摘要:
An alignment method of mask patterns in patterning processes includes forming a first layer by transferring a first mask pattern onto a wafer or a layer formed on the wafer, and forming a second layer by transferring a second mask pattern onto the first layer. The method particularly includes a first alignment step of performing, when forming the first layer, alignment for minimizing offset between a center position of the wafer and a center position of the first mask pattern and a residual rotation error between the wafer and the first mask pattern, and alignment based on an amount of deviation of superposition of the second layer pattern on the first layer pattern. The deviation is caused by linear expansion and contraction of a wafer and caused by an orthogonal error between a wafer and a mask pattern, and also the deviation is obtained by measuring in advance in pattering processes successively performed for a plurality of wafers. The method also includes a second alignment step of performing, when forming the second layer, only alignment for minimizing offset between a center position of the first layer pattern and a center position of the second mask pattern and a residual rotation error between the first layer pattern and the second mask pattern.
摘要:
Provided is a planarizing method in which a planarization with high flatness can be performed, without being restricted by the distribution of film thickness in the applied resist film. The planarizing method comprises the steps of: forming a resist film on a film to be planarized formed on a substrate; exposing the resist film with the amounts of exposure light in respective sections into which an area in which the film to be planarized is formed is divided, the amounts of exposure light being determined so as to realize film thicknesses to be left for planarization of the resist film in the respective sections; developing the exposed resist film, to form a resist film pattern with a controlled distribution of film thickness; and etching the resist film pattern and the film to be planarized, until eliminating the thickness amounts to be eliminated of the film to be planarized.
摘要:
Provided is a thin-film magnetic head in which the concentration of magnetic flux in the shield layer and the magnetic pole layer is suppressed. The thin-film magnetic head comprises a plurality of magnetic layers that have front surfaces reaching a head end surface on the ABS side. Further in this head, at least one of the plurality of magnetic layers has a shape in which: each of edges corresponding to both side surfaces extends so as to spread obliquely rearward with each other from an end of a straight edge in a track width direction corresponding to the front surface; and the front surface reaching the head end surface has a shape in which upper and lower corner portions in each of both end portions in the track width direction form obtuse angles or rounded shapes.
摘要:
In an electronic device, insulating layers (24, 26 and 28) on metal conductors (23 and 27) situated inside the device are formed of insulating layers made of a novolac resin, and an insulating layer made of a polyimide resin is used as an insulating layer (30) covering these insulating layers and exposed on the surface of the device. Development can be prevented in the case where a portion of each of the insulating layers (24, 26 and 28) is opened to expose a metal conductor, and rework can also be easily carried out. The use of an insulating layer made of a polyimide resin as the insulating layer (30) exposed on the surface of the device provides excellent weather resistance and reliability.
摘要:
A resist pattern processing apparatus comprises a stage for mounting a substrate having a patterned photoresist arranged on a surface thereof, a UV-emitting part for emitting UV rays to the stage, and an annular member for surrounding the whole periphery of the substrate. This allows the annular member to restrain ozone supplied near a mounting surface for the substrate on the stage from diffusing to the periphery of the stage, whereby the ozone concentration becomes even in the surface of the substrate mounted on the stage.
摘要:
In the invention of this application, the resist pattern having a given pattern of opening concavity is formed on the component to be dry etched, the aqueous solution containing a water-soluble resin is filled in that opening concavity, and the filled aqueous solution containing a water-soluble resin is dried into a narrow shrunk resin at the middle of the opening concavity, whereby the mask of shrunk resin is formed. It is thus possible to form a micropattern much finer than determined by optical limits.
摘要:
In a method of forming a patterned thin film, first, an etching stopper film and a film to be patterned are formed in this order on a base layer. Next, a patterned first film is formed on the film to be patterned. Next, a second film is formed over an entire surface on top of the film to be patterned and the first film. Then, by removing the first film, an etching mask is obtained from the second film formed on the film to be patterned. The film to be patterned is selectively etched through dry etching using the etching mask. A patterned thin film having a groove is thereby obtained.