摘要:
A pattern is transferred to a resist film on a wafer by a reduction projection exposure method using a half-tone phase-shift mask in which is formed a half-tone phase-shifter pattern including a thin-film pattern functioning as an attenuator and a resist pattern functioning as the photosensitive composition for phase adjustment. This method improves the accuracy of dimensions of the pattern transferred to the wafer.
摘要:
In order to inhibit or prevent a pattern abnormality such as the deformation or misalignment of a pattern of a semiconductor integrated circuit device, a light intensity is calculated based on the pattern data DBP of a mask and the aberration data DBL of a lens of a pattern exposure device (step 101) and then the results of the light intensity calculation is compared with the results of the light intensity calculated on condition that the lens of the pattern exposure device has no aberration (step 102), and then a pattern data exceeding an allowable level, of the pattern data of the mask, is corrected according to the amount of correction calculated on the basis of the results of the comparison such that the pattern data does not exceed the allowable level (step 104). The mask is manufactured by using the mask making data DBM after the correction and then is mounted on the pattern exposure device to transfer a predetermined pattern to a semiconductor wafer.
摘要:
A semitransparent phase shifting mask has, in the periphery of a pattern element area, a light shielding portion which is formed by a semitransparent phase shifting portion and a transparent portion with the optimal size combination. A pattern is formed employing the semitransparent phase shifting mask.
摘要:
An air fuel ratio detecting arrangement using a diffusion suppressing type air fuel ratio sensor applicable to an air fuel ratio control unit for an internal combustion engine incorporating an atmospheric air pressure correction circuit in a signal processing and outputting device for correcting an output voltage signal processed therein based on a change in atmospheric air pressure which is detected when a predetermined operating condition of an internal combustion engine is satisfied. A secular change correction circuit included in the signal processing and outputting device detects a change in electromotive force of a concentration cell portion of the air fuel ratio sensor when a predetermined rich air fuel ratio is reached and corrects a reference voltage for the air fuel ratio sensor based on the detected change in electromotive force of the concentration cell portion in addition to an air calibration circuit.
摘要:
An area on a photoresist film which is formed on a substrate surface having a topography, is exposed a plurality of times in such a manner that the image plane of a mask pattern is formed at a plurality of positions which are spaced apart from a reference plane in the substrate in the direction of an optical axis, and then the photoresist film is developed to form a resist pattern. According to the above method, the effective focal depth of the projection aligner used is enhanced, and moreover the reduction of the image contrast at the photoresist film is made very small by the plural exposure operations. Accordingly, a fine pattern can be formed accurately on the substrate surface having the topography.
摘要:
A technique of forming an asymmetric pattern by using a phase shift mask, and further, techniques of manufacturing a diffraction grating and a semiconductor device, capable of improving accuracy of a product and capable of shortening manufacturing time. In a method of manufacturing a diffraction grating by using a phase shift mask (in which a light shield part and a light transmission part are periodically arranged), light emitted from an illumination light source is transmitted through the phase shift mask, and a photoresist on a surface of a Si wafer is exposed by providing interference between zero diffraction order light and positive first diffraction order light which are generated by the transmission through this phase shift mask onto the surface of the Si wafer, and a diffraction grating which has a blazed cross-sectional shape is formed on the Si wafer.
摘要:
A pattern measuring apparatus which can identify a kind of gaps formed by a manufacturing process having a plurality of exposing steps such as SADP, particularly, which can suitably access a gap even if a sample has the gap that is not easily accessed is disclosed. A feature amount regarding one end side of a pattern having a plurality of patterns arranged therein and a plurality of kinds of feature amounts regarding the other end side of the pattern are extracted from a signal detected on the basis of scanning of a charged particle beam. With respect to proper kinds of feature amounts among the plurality of kinds of feature amounts, the feature amount on one side of the pattern and that on the other end side of the pattern are compared. On the basis of the comparison, the kinds of spaces among the patterns are determined.
摘要:
The present invention aims at proposing a library creation method and a pattern shape estimation method in which it is possible, when estimating a shape based on comparison between an actual waveform and a library, to appropriately estimate the shape.As an illustrative embodiment to achieve the object, there are proposed a method of selecting a pattern by referring to a library, a method of creating a library by use of pattern cross-sectional shapes calculated through an exposure process simulation in advance, and a method for selecting a pattern shape stored in the library.
摘要:
Productivity of a semiconductor integrated circuit device is improved. According to how many times the photomask is used, a photomask having an opaque pattern made of metal and a photomask having an opaque pattern made of a resist film are properly used, and thereby an exposure treatment is performed.
摘要:
A transmitter for averagedly suppressing the variation in input level of an amplifier according to variation in carrier level. The transmitter comprises an input power calculation section (16) for calculating mean input power of each carrier, an output power calculating section (17) for calculating mean output power of each carrier after the carrier band is limited, a monitoring section (18) for identifying a carrier having the maximum mean input power, acquiring the maximum value, acquiring the mean output power of the identified carrier, determining the ratio of the mean input power to the mean output power, and calculating level control information which is the ratio of the ratio determined above to a predetermined expected value, and a signal level adjusting section (15) for adjusting the level of a multicarrier signal by multiplying the level control information outputted from the monitoring section (18).