摘要:
An elastomeric stamp (10) for printing a pattern on a substrate (500) with an ink (520) is at least partially formed from a first material such as PDMS. The stamp comprises a first surface (12) in a first plane, a second surface (14) in a second plane and a third surface (16) extending from the first surface (12) to the second surface (14). The first surface (12) typically forms to the contact surface of a protruding feature of the stamp (10), whereas the third surface (16) typically forms the edge of such a feature. The first surface (12) comprises a barrier layer (22) being substantially impermeable to the ink (520). Optionally, the second surface (14) may carry a further barrier layer (24) to suppress gas phase diffusion of the ink (520). In contrast, the third surface (16) is permeable to the ink (520). Consequently, a stamp (10) is obtained that is highly suitable for edge transfer lithography type patterning. The first material of the stamp serves as an ink reservoir, thus reducing the re-inking frequency of the stamp, and the layer (22) prevents unwanted diffusion of the ink (520) to the areas of the substrate (500) into contact with the stamp (10), thus 20 improving the feature definition on the substrate surface.
摘要:
A transflective liquid crystal display comprising a plurality of pixels, each pixel comprising a liquid crystal layer (3) sandwiched between a front substrate (1) and a back substrate (2), and an optical layer (7) comprising a birefringent material, said pixels being divided into at least one transmissive (5) and at least one reflective subpixel (4), and said optical layer (7) being at least partly sandwiched between the liquid crystal layer (3) and one of said front substrate (1) or back substrate (2), and being patterned into domains (8, 9), each domain covering at least part of a reflective subpixel (4) or at least part of a transmissive subpixel (5).
摘要:
Optical data storage method, reading method, device (40) and storage medium (42,43), comprising storing data by modifying optical properties of polymer material (42), whereby writing is initiated by reorientation of photo-orientable units, typically by illuminating with light at a wavelength that initiates the reorientation, and whereby reading of data includes collection of anisotropic emission from dipole emitters.
摘要:
A self-assemblable polymer is disclosed, having first and second molecular configurations with the first molecular configuration has a higher Flory Huggins parameter for the self-assemblable polymer than the second molecular configuration, and the self-assemblable polymer is configurable from the first molecular configuration to the second molecular configuration, from the second molecular configuration to the first molecular configuration, or both, by the application of a stimulus. The polymer is of use in a method for providing an ordered, periodically patterned layer of the polymer on a substrate, by ordering and annealing the polymer in its second molecular configuration and setting the polymer when it is in the first molecular configuration. The second molecular configuration provides better ordering kinetics and permits annealing of defects near its order/disorder transition temperature, while the first molecular configuration, with a higher order/disorder transition temperature, provides low line edge/width roughness for the pattern formed on setting.
摘要:
A BCP having first block of first monomer and second block of second monomer, adapted to undergo a transition from disordered state to ordered state at a temperature less than TOD, further including a bridging moiety having a functional group to provide hydrogen bonding between bridging moieties of adjacent first and second BCP molecules when in the ordered state and at a temperature in excess of a glass transition temperature Tg for the BCP. Composition including BCP comprising first block of first monomer and second block of second monomer, and a crosslinking compound having first and second terminal groups joined by a central moiety and arranged to crosslink second blocks of adjacent first and second BCP molecules by providing non-covalent bonding between the terminal groups and a functional group of the second monomer of the second blocks when the BCP is in the ordered state.
摘要:
A method of lithography on a substrate uses a self-assembled polymer (SAP) layer deposited on the substrate, with first and second domains arranged in a pattern across the layer. A planarization layer is formed over the SAP and a development etch applied to substantially remove a portion of the planarization layer over the second domain leaving a cap of the planarization layer substantially covering the first domain. The uncapped second domain is then removed from the surface by a breakthrough etch leaving the capped first domain as a pattern feature on the surface. A transfer etch may then be used to transfer the pattern feature to the substrate using the capped first domain. The capping allows the second domain to be removed, e.g., without excessive loss of lateral feature width for the remaining first domain, even when the difference in etch resistance between the first and second domains is small.
摘要:
A display device comprising at least one substrate(1, 2), a first and a second electrode(7, 8), a display medium (12) and an optically active layer(3, 5), wherein said optically active layer comprises a polarizer (3) and is arranged between said substrate and said display medium, and wherein said substrate is made of a birefringent material.
摘要:
A method for the manufacture of a polarizer is provided. The method comprises providing a liquid crystal composition comprising a liquid crystal host and a viscosity enhancer; providing a thin film of said composition on a substrate; orienting said liquid crystal host to obtain an aligned film in a first liquid crystal mesophase, wherein the liquid crystal host is aligned planar to said substrate; gelating said viscosity enhancer to congeal said film; and obtaining a second liquid crystal state in said congealed film. By the use of a viscosity enhancer in the composition, homeotropic alignment of the liquid crystal host can be suppressed.
摘要:
A mirror device (1) which can be simultaneously used for display purposes, based on e.g. an LCD display (5) with a polarizing min or (2) placed in front of it. the reflectivity of such a mirror display is enhanced by providing at its non-viewing side a further polarizing mirror (11) Color absorption in the display is prevented by placing the color filter (13) or a color (sequential) backlight (30) behind this reflective polarizer at the back of the display.
摘要:
A birefringent optical element comprises a polymerized and/or cross-linked mixture (301) of a liquid crystalline compound and a photo-isomerizable compound. The birefringence of the element can be determined with high precision by manipulating the order parameter and polarization anisotropy of said mixture. For this purpose, the photo-isomerizable compound is converted from a transform to a cis-form during manufacturing by means of irradiation. Preferably the photo-isomerizable compound is a cinnamate compound. The irradiated mixture is polymerized and/or cross-linked after irradiation. The irradiation preferably takes place through a greyscale mask (305) so that within the mixture (301) portions (302R, 302G, 302B) are defined that obtain different birefringence values. The process is for example suitable for manufacturing a retarder layer or compensation foil inside the liquid crystalline cell of a Liquid Crystal Display (LCD) device, and in particular for manufacturing a patterned retarder layer having portions with different retardation, associated with the primary colors of a color LCD device.