摘要:
A pattern forming method performs a multiple exposure process, the multiple exposure process comprising: exposing a resist film with actinic rays or radiation a plurality of times, wherein a contact angle of the resist film for water is 75° or more.
摘要:
An exposure apparatus (10) is equipped with a laser unit (16) that emits a laser beam, a memory (51) that stores a first information which shows a relation between a linewidth error of a pattern formed on a wafer and a spectral characteristic of the laser beam emitted from the laser unit, and a main controller (50) that controls the spectral width of the laser beam via a laser controller (16e), based on the first information and on information related to a reticle that is to be used. Main controller (50) performs spectral width control of the laser beam so as to suppress linewidth error, based on the first information and on the information related to the reticle that is to be used.
摘要:
An alignment method and apparatus is disclosed wherein, in one exposure process, alignment of a semiconductor substrate (1) may be performed and, while moving the semiconductor substrate in a step-and-repeat manner in relation to shot positions on the semiconductor substrate, a pattern of an original may be printed on the semiconductor substrate at the respective shot position, wherein the one exposure process may be performed while using a plurality of placement data each specifying positions with respect to which the semiconductor substrate is to be positioned during the step-and repeat motion.
摘要:
A surface position detecting method for detecting a surface position of a surface to be examined, having surface height irregularity, while relatively scanning the surface, is disclosed. The method includes detecting characteristic data related to a surface state at plural measurement positions on the surface, while relatively scanning the surface, and processing the detected characteristic data related to the measurement positions to determine a measurement position for measurement of the surface position in a subsequent surface position detecting process.
摘要:
In a semiconductor circuit device fabricating process in which a reduction image projection exposure apparatus and an electron beam exposure apparatus are in a mixed use in its exposure process, pattern position shift errors for each exposure apparatus are measured and corrected at the time of drawing by means of an electron beam drawing apparatus, thereby enhancing the alignment accuracy. First, a pattern for measuring position shifts is exposed using a stepper and the electron beam drawing apparatus. Then, the position shift errors are measured using an identical coordinate position measuring device. Accidental errors have been mixed in the measurement result at this time. On account of this, measurement data at a certain point are smoothed by taking a summation average with data on the periphery thereof, thus decreasing influences of the accidental errors. Moreover, by inverting positive or negative signs of the data on the position shift errors, the data are made into correction data. Then, the correction data are stored. When an exposure is performed by the electron beam drawing apparatus with the pattern exposed by the stepper as a reference, the correction data for the two apparatuses are transferred to the electron beam drawing apparatus, the two data are added to detected mark positions, and at positions after the addition, pattern position shifts within a wafer surface are determined. At the time of exposure, the exposure is performed at positions obtained by subtracting the correction data from the determined pattern position shifts. This method makes it possible to correct both position shift errors within the wafer surface due to the stepper and position shift errors due to the electron beam drawing apparatus, thus allowing the alignment accuracy to be enhanced. Also, this result makes it possible to enhance yield for products in the fabricating process.
摘要:
An alignment method and apparatus is disclosed wherein, in one exposure process, alignment of a semiconductor substrate (1) may be performed and, while moving the semiconductor substrate in a step-and-repeat manner in relation to shot positions on the semiconductor substrate, a pattern of an original may be printed on the semiconductor substrate at the respective shot position, wherein the one exposure process may be performed while using a plurality of placement data each specifying positions with respect to which the semiconductor substrate is to be positioned during the step-and-repeat motion.
摘要:
The invention discloses a method to easily determine the parameters of a second process for manufacturing from the parameters of a first process. Metrics representative of the differences between the two processes are computed from a number of values of the parameters, which can be measured for the two processes on a calibration layout, or which can be determined from pre-existing values for layouts or reference data for the two processes by an interpolation/extrapolation procedure. The number of metrics is selected so that their combination gives a precise representation of the differences between the two processes in all areas of a design. Advantageously, the metrics are calculated as a product of convolution of the target design and a compound of a kernel function and a deformation function.
摘要:
A lithographic apparatus includes an illumination system configured to condition a radiation beam, a support for a patterning device, a substrate table for a substrate, a projection system, and a control system. The patterning device is capable of imparting the radiation beam with a pattern in its cross-section to form a patterned radiation beam. The projection system is configured to project the patterned radiation beam as an image onto a target portion of the substrate along a scan path. The scan path is defined by a trajectory in a scanning direction of an exposure field of the lithographic apparatus. The control system is coupled to the support, the substrate table and the projection system for controlling an action of the support, the substrate table and the projection system, respectively. The control system is configured to correct a local distortion of the image in a region along the scan path by a temporal adjustment of the image in that region, thereby reducing the intra-field overlay errors.
摘要:
By taking into consideration tool specific distortion signatures and reticle specific placement characteristics in an alignment control system the control quality of sophisticated APC strategies may significantly be enhanced. Respective correction data may be established on the basis of any combinations of tool/reticles and layers to be aligned to each other, which may modify the respective target values of alignment parameters used for controlling the alignment process on the basis of standard overlay measurement data obtained from dedicated overlay marks.