Abstract:
There is provided an electronic paper display device and a manufacturing method thereof. The electronic paper display device includes a first electrode formed of a transparent material; at least one or more second electrodes disposed to face the first electrode with differing gaps therebetween; and at least one or more display units disposed between the first and second electrodes and having optical properties varied according to voltage applied to the first and second electrodes. The display units are disposed between the first electrode and the second electrodes disposed to face the first electrode with differing gaps, so respective rotation amounts or rotation angles of the display units become different when the same magnitude of voltage is applied. Accordingly, a wide range of contrast levels is displayed.
Abstract:
An electronic paper display device and a manufacturing method thereof, where the electronic paper display device may include a first electrode; a dielectric layer that is disposed on the first electrode and has a plurality of cells defined by a barrier rib in a round shape; a second electrode that faces the dielectric layer; and electronic balls that are disposed in the inside of the respective cells to display an image according to the electric fields applied to the first and second electrodes.
Abstract:
The present invention relates to a paper display device and a manufacturing method thereof. The electronic paper display device includes: a first electrode; a first partition wall which is disposed on the first electrode, and defines a number of cell regions; a second partition wall which faces the first partition wall, and defines the cell regions together with the first partition wall; a substrate including a second electrode, wherein the second electrode is disposed on the second partition wall, and faces the first electrode; dielectric fluid filled in at least each of the cell regions; and twist balls individually floating within the dielectric fluid of each of the cell regions.
Abstract:
A message transmission method and device are provided. The message transmission method, which is carried out by a node in a mixed network comprised of a private network including at least one node and a public network, includes: checking whether an address of a destination node to receive a message is recorded in a communication node list of the node, when the address of the destination node is not the address of the node; transmitting the message to the destination node recorded, when it is determined that the address of the destination node is recorded in the communication node list; and transmitting the message and the address of the destination node to a node having an address closest to the address of the destination node among the addresses recorded in the communication node list, when the address of the destination node is not recorded in the communication node list.
Abstract:
A method for manufacturing a ceramic green sheet includes providing a stamp having an imprinting surface on which a raised structure corresponding to a circuit pattern is formed, imprinting the stamp on the ceramic green sheet to form a depressed pattern in the ceramic green sheet, the depressed pattern being transferred from the raised structure, curing the ceramic green sheet with the stamp imprinted on the ceramic green sheet, separating the stamp from the ceramic green sheet, and providing the depressed pattern of the ceramic green sheet with the conductive material.
Abstract:
Provided is a pump laser integrated vertical external cavity surface emitting laser (VECSEL). The VECSEL may include a surface emitting laser unit including a first active layer having a multiple quantum well structure emitting light having a first wavelength, a reflective layer may be formed on the first active layer, and an external mirror may be disposed opposite to a lower surface of the first active layer and defining a cavity resonator together with the reflective layer. A pump laser unit may be formed on a part of the surface emitting laser unit and may have a perpendicular light emissive surface emitting a pump beam having a second wavelength for exciting the first active layer. A beam reflector may be formed on the light emissive surface of the pump laser unit and reflecta pump beam that is incident from the pump laser unit to the first active layer.
Abstract:
A manufacturing method for imprinting stamper is disclosed. The manufacturing method includes forming a plurality of concave patterns on an insulation layer, forming a stamper by filling copper in the concave patterns, separating the stamper from the insulation layer, providing roughness on the surface of the stamper, can separate the stamper from the insulation layer, can prevent the deformation of the stamper and can manufacture pluralities of stampers repeatedly.
Abstract:
A method for manufacturing printed circuit board is disclosed. With a method for manufacturing a printed circuit board which includes: (a) stacking an insulation substrate, in which a first align hole is perforated, onto a support plate, to one side of which a guide pin is joined, such that the guide pin is inserted into the first align hole, where the first align hole is formed in correspondence with the guide pin, (b) stacking an imprinting mold, in which a second align hole is perforated, onto the support plate, such that the guide pin is inserted into the second hole formed in correspondence with the guide pin, and (c) stacking and pressing a pressing plate onto the support plate, and compressing the insulation substrate and the imprinting mold together, where an intaglio pattern is formed in a surface of the insulation substrate facing the imprinting mold, in correspondence with a circuit pattern, and a raised pattern is formed in a surface of the imprinting mold facing the insulation substrate, in correspondence with the circuit pattern, the installation of expensive aligning equipment is unnecessary in aligning an imprinting mold and an insulation substrate, and it is possible to form the intaglio patterns by imprinting on several insulation substrates at the same time by collectively stacking the several imprinting molds and the insulation substrates and compressing, and to prevent defects caused by the expansion and contraction of the insulation substrate which occur during the forming of the intaglio patterns.
Abstract:
A photonic integrated device using a reverse-mesa structure and a method for fabricating the same are disclosed. The photonic integrated device includes a first conductive substrate on which a semiconductor laser, an optical modulator, a semiconductor optical amplifier, and a photo detector are integrated, a first conductive clad layer and an active layer sequentially formed on the first conductive substrate in the form of a mesa structure, a second conductive clad layer formed on the active layer in the form of a reverse-mesa structure, an ohmic contact layer formed on the second clad layer in such a manner that the ohmic contact layer has a width narrower than the width of an upper surface of the second conductive clad layer, a current shielding layer filled in a sidewall having a mesa and reverse-mesa structure, and at least one window area formed between the above elements.
Abstract:
Provided with an apparatus for adaptive equalizer which has a first pulse slimming equalizing section and a third delaying and adding section, the apparatus including: an error signal extracting section for extracting an error from a signal delayed for a predetermined period of time at the third delaying and adding section; and a coefficient calculating and updating section for calculating the coefficients of the signal of the first pulse slimming equalizing section and the error signal extracted at the error signal extracting section, and updating the coefficients.