摘要:
A liquid crystal (LC) lightvalve comprising a twisted nematic LC layer whose molecules are aligned with pixel edges at the mirror backplane, thereby providing improved contrast and efficiency, and reduced visibility of post spacers in black state. The present invention is directed to an LC structure wherein the backplane is rubbed in a direction rectilinear with pixel edges. The LC layer is given the same twist rotation and birefringence as in the conventional TN lightvalve. Polarization control is maintained by illuminating the lightvalve with light whose polarization is rotated by the twist angle relative to the x,y, pixel axes, and by collecting the orthogonally polarized component of the reflected light. The lightvalve top glass is thus rubbed in a direction which is rotated by the twist angle from the horizontal or vertical direction at which the backplane is rubbed.
摘要:
A method for calculating long-range image contributions from mask polygons. An algorithm is introduced having application to Optical Proximity Correction in optical lithography. A finite integral for each sector of a polygon replaces an infinite integral. Integrating over two triangles, rather than integrating on the full sector, achieves a finite integral. An analytical approach is presented for a power law kernel to reduce the numerical integration of a sector to an analytical expression evaluation. The mask polygon is divided into regions to calculate interaction effects, such as intermediate-range and long-range effects, by truncating the mask instead of truncating the kernel function.
摘要:
A method of modeling dose and focus response in lithographic imaging to simulate an optical critical dimension (OCD) metrology system creates simulated aerial images of the object pattern to be transferred to a resist film on the substrate at different focus settings of the metrology imaging system. The method then successively creates simulated images, at different exposure dose and focus settings of the metrology imaging system, of the latent and developed image of the object pattern in the resist film on the substrate, and the etched image of the object pattern in the substrate. The method converts the simulated images into polygons having more than four sides and determines the Fourier spectrum of the polygons simulating the images of the object pattern. Using the spectrum of the polygons simulating the images of the object pattern, the method then creates simulated aerial images of the object pattern developed in the resist film, at different dose and focus settings, as viewed by the OCD metrology system.
摘要:
A method for preparing an alignment layer surface provides a surface on the alignment layer. The surface is bombarded with ions, and reactive gas is introduced to the ion beam to saturate dangling bonds on the surface. Another method for preparing an alignment layer surface provides a surface on the alignment layer. The surface is bombarded with ions and quenched with a reactive component to saturate dangling bonds on the surface.
摘要:
A display device, in accordance with the present invention includes a transparent substrate and an array of pixels formed on the substrate, each pixel comprises a transparent electrode and a deformable member electrically actuated between a first state and a second state, wherein in the first state a liquid including a dye is disposed in a gap between the transparent electrode and the deformable member and wherein in the second state the deformable member reduces the gap between the transparent electrode and the deformable member such that the liquid is substantially removed between the deformable layer and the transparent electrode in the area of contact. A plurality of switches are formed on the substrate for supplying control signals to the array of pixels to selectively actuate the deformable members of the pixels, wherein each switch comprises an actuating member movable between an active state and an inactive state, whereby in the active state any control signal supplied to the switch passes through the switch, and in the inactive state any control signal supplied to the switch is prevented from passing through the switch. Fabrication methods are also disclosed.
摘要:
A beamsplitter optical element, including a triangular substrate, such as a prism, having a plane face corresponding to the hypotenuse of the prism which is coated with a thin film structure having materials and thicknesses, which effect a division of each light beam such as into a reflected and a transmitted portion, in such a way that the beams suffer no net aberration as a result of multiple reflections within the thin film structure, and a second triangular substrate, such as a prism having a plane face, corresponding to the hypotenuse, optically bonded to the thin film structure deposited on the hypotenuse of the first prism.
摘要:
A computer-implemented method is provided for generating an electromagnetic field (EMF) correction boundary layer (BL) model corresponding to a mask, which can include using a computer to perform a method, in which asymmetry factor data is determined from aerial image measurements of a plurality of different gratings representative of features provided on a mask, wherein the aerial image measurements having been made at a plurality of different focus settings. The method may also include determining boundary layer (BL) model parameters of an EMF correction BL model corresponding to the mask by fitting to the asymmetry factor measurements. Alternatively, the asymmetry factor data can be determined from measurements of line widths of photoresist patterns, wherein the photoresist patterns correspond to images cast by a plurality of gratings at a plurality of different defocus distances, and the gratings can be representative of features of a mask.
摘要:
A method for determining an image of a patterned object formed by a polychromatic lithographic projection system having a laser radiation source of a finite spectral bandwidth and a lens for imaging the patterned object to an image plane within a resist layer. The method comprises providing patterns for the object, a spectrum of the radiation source to be used in the lithographic projection system, an intensity and polarization distribution of the radiation source, and a lens impulse response in the spatial domain or in the spatial frequency domain of the image. The method then includes forming a polychromatic 4D bilinear vector kernel comprising a partially coherent polychromatic joint response between pairs of points in the spatial domain or in the spatial frequency domain, determining the dominant polychromatic 2D kernels of the polychromatic 4D bilinear vector kernel, and determining the image of the patterned object from convolutions of the object patterns with the dominant polychromatic 2D kernels.
摘要:
A solution for performing a data correction on a hierarchical integrated circuit layout is provided. A method includes: receiving a CD compensation map for the long range critical dimension variation prior to the data correction; grouping compensation amounts of the CD compensation into multiple compensation ranges; generating multiple target layers corresponding to the multiple compensation ranges; super-imposing a region of the CD compensation map having a compensation amount falling into a compensation range over a respective target layer to generate a target shape; performing the data correction on the layout to generate a data corrected layout; performing the data correction on the target shape separately to generate a data corrected target shape; and combining the data corrected layout and the data corrected target shape based on the CD compensation map.
摘要:
A set of candidate global optima is identified, one of which is a global solution for making a mask for printing a lithographic pattern. A solution space is formed from dominant joint eigenvectors that is constrained for bright and dark areas of the printed pattern. The solution space is mapped to identify regions each containing at most one local minimum intensity. For each selected region, stepped intensity contours are generated for intensity of the dark areas and stepped constraint surfaces are generated for a target exposure dose at an individual test point. An individual test point is stepped toward a lowest intensity contour along the stepped constraint surfaces of each selected region. Further lowering of the intensities of these points is also detailed, where possible in adjacent regions, to yield final test points. The set of candidate global optima is the final test points at their respective lowest intensity contour of the respective selected regions.