Abstract:
The invention relates to methods and apparatus useful for making color filters for a liquid crystal display. A multicolored ink pattern is deposited to a substrate (22) while in a deformable state, flattened during the deposition process, and the deformed, more uniform shape of the printed dot (7c) is thereafter retained, preferably by curing during deposition. The transfer layer is preferably formed on a collector roll (20). A plurality of colored ink patterns is then transferred to the collector roll (20), preferably from a single pattern roll (19) having multiple patterns (28a-28d) thereon, to form the multicolor image that will become the color filter. This multicolored image is then transferred to the substrate (22).
Abstract:
High precision image forming surfaces for printing applications such as, for example, gravure or typographic printing applications are formed by selectively growing or depositing metal or other materials onto a suitable substrate. In a preferred method, nickel metal is deposited by electroless deposition onto a low CTE substrate.
Abstract:
A membrane microstructure device is disclosed (10). The membrane microstructure device (10) includes a first glass, ceramic or glass-ceramic plate (12) defining a first recess (32), a second glass, ceramic or glass-ceramic plate (20) defining a second recess (34), and a non-metallic porous membrane (30) sandwiched between the first and second plates (12, 20). The first plate (12), second plate (20) and porous membrane (30) are joined together and the porous membrane (30) is arranged to cover the first (32) and second (34) recesses to define a first microchannel between the first plate and the porous membrane and a second microchannel in fluid communication with the first microchannel between the second plate and the porous membrane. A method of manufacturing a membrane microstructure device is also disclosed.
Abstract:
A microfluidic reaction device 10 includes a thermal buffer fluid passage [70] and a reactant passage [22] having mixing [40] and dwell time [50] sub-passages all defined within an extended body, the dwell-time sub-passage [50] having at least 1 ml volume, and the mixing sub-passage [40] being in the form of a unitary mixer not requiring precise splitting of flows to provide good mixing. The device is desirably formed in glass or glass-ceramic. The unitary mixer [40] is structured to generate secondary flows in the reactant fluid and is preferably closely thermally coupled to the buffer fluid passage [70] by sharing one or more common walls.
Abstract:
A class of designs is provided for a mixer in micro reactors where the design principle includes at least one injection zone (410) in a continuous flow path where at least two fluids achieve initial upstream contact and an effective mixing zone (i.e. adequate flow of fluids and optimal pressure drop) containing a series of mixer elements (430) in the path. Each mixer element is preferably designed with a chamber at each end in which an obstacle (450) is placed (thereby reducing the typical inner dimension of the chamber) and with optional restrictions (460) in the channel segments. The obstacles are preferably cylindrical pillars but can have any geometry within a range of dimensions and may be in series or parallel along the flow path to provide the desired flow-rate, mixing and pressure-drop. The injection zone may have two or more interfaces and may, include one or more cores to control fluids before mixing.
Abstract:
The present invention relates to microfluidic devices and to their method of manufacture. The microfluidic devices are original by their specific structure (of sandwich type) and by the materials from which they are made (mainly glasses, glass ceramics, ceramics), and also by their specific method of manufacture, which is based on a vacuum-forming operation. The microfluidic device includes a first assembly including a microstructure and a first substrate, wherein the microstructure is constructed and arranged on the substrate under vacuum. A second assembly includes a second substrate positioned on the microstructure after the first assembly is presintered and adhered thereto by heat treatment to form a one-piece microstructure defining at least one recess between the first and second substrates.