Abstract: Provided are a method and structure for optical connection between an optical transmitter and an optical receiver. The method includes the steps of: forming on a substrate a light source device, an optical detection device, an optical transmission unit electrically connected with the light source device, and an optical detection unit electrically connected with the optical detection device; preparing a flexible optical transmission-connection medium to optically connect the light source device with the optical detection device; cutting the prepared optical transmission-connection medium and surface-finishing it; and connecting one end of the surface-finished optical transmission-connection medium with the light source device and the other end with the optical detection device. Fabrication of an optical package having a 3-dimensional structure is facilitated and fabrication time is reduced, thus improving productivity.

Abstract: Provided are an optical waveguide master and a method of manufacturing the same, which has a 90° optical path change structure and an integrated optical waveguide with a 45° inclined reflection surface. The optical waveguide with the inclined reflection surface manufactured using the optical waveguide master facilitates coupling between the active optical electronic device and the waveguide, thereby perfectly overcoming difficulty in conventional mass production. The optical waveguide makes it possible to accomplish connection between various optical devices and optical circuits, and becomes source technology of an optical printed circuit board (PCB) and a system on package (SOP) in the future.

Abstract: Provided are a method and structure for optical connection between an optical transmitter and an optical receiver. The method includes the steps of: forming on a substrate a light source device, an optical detection device, an optical transmission unit electrically connected with the light source device, and an optical detection unit electrically connected with the optical detection device; preparing a flexible optical transmission-connection medium to optically connect the light source device with the optical detection device; cutting the prepared optical transmission-connection medium and surface-finishing it; and connecting one end of the surface-finished optical transmission-connection medium with the light source device and the other end with the optical detection device. Fabrication of an optical package having a 3-dimensional structure is facilitated and fabrication time is reduced, thus improving productivity.

Abstract: The present invention provides a sensor and apparatus for measuring flow electric potential for evaluation of a degree of electrodeposition of paint applied to the body or chassis of a vehicle. The sensor includes a base plate part, a dielectric polymer member, a positive (+) electrode terminal and a negative (?) electrode terminal, and an insulation part. The base plate part is mounted on the outer and inner body or chassis of a vehicle, and is electrically connected to ground. The dielectric polymer member is patterned and formed on the base plate part. The positive (+) electrode terminal is connected to the dielectric polymer member and is configured to have a positive (+) polarity. The negative (?) electrode terminal is connected to the base plate part and is configured to have a negative (?) polarity. The insulation part is formed to insulate the positive (+) and negative (?) electrode terminals from each other.

Abstract: A backlight assembly includes a light supplying part and a light guide plate. The light supplying part includes a white light source and a monochromatic light source that generates a monochromatic light. The white light source generates a white light responsive to an electric power provided from exterior to the backlight assembly. The light guide plate is disposed adjacent to a side of the light supplying part. The light guide plate includes a light guiding region where the white light and the monochromatic light are guided into and a peripheral region that surrounds the light guiding region. Therefore, color reproducibility of an LCD apparatus is increased so that an image display quality of the LCD apparatus is improved.

Abstract: Provided is an optical connection apparatus for a parallel optical interconnect module and a parallel optical interconnect module using the same for reducing a coupling loss generated due to an alignment error when coupled with an optical fiber, comprising: a 2D reflector in a prism shape and having at least two rows of cylinder type lens attached thereto; a 2D optical waveguide having at least two layers of core arrays; at least two rows of 2D optical benches; and a 2D ferrule capable of loading at least two layers of optical fibers so as to facilitate the fixing of the 2D optical waveguide for optical interconnection.

Abstract: The present invention provides a sensor and apparatus for measuring flow electric potential for evaluation of a degree of electrodeposition of paint applied to the body or chassis of a vehicle. The sensor includes a base plate part, a dielectric polymer member, a positive (+) electrode terminal and a negative (?) electrode terminal, and an insulation part. The base plate part is mounted on the outer and inner body or chassis of a vehicle, and is electrically connected to ground. The dielectric polymer member is patterned and formed on the base plate part. The positive (+) electrode terminal is connected to the dielectric polymer member and is configured to have a positive (+) polarity. The negative (?) electrode terminal is connected to the base plate part and is configured to have a negative (?) polarity. The insulation part is formed to insulate the positive (+) and negative (?) electrode terminals from each other.

Abstract: In a backlight unit and a display apparatus having the backlight unit, the backlight unit includes a first light source, a second light source, and an optical plate having a lower surface facing the second light source and an upper surface substantially parallel with the lower surface. The first light source generating a first light having a first wavelength range. The second light source generating a second light having a second wavelength range different from the first wavelength range to compensate the first light. Thus, display quality of display apparatus may be improved.

Abstract: An optical printed circuit board system having a tapered optical waveguide is provided. The optical printed circuit board system includes a substrate as a printed circuit board having an electrical circuit and on which an electrical circuit chip is mounted, a system board including an optical bench coupled to the substrate and on which a photoelectrical signal chip electrically connected to the electrical circuit chip through the electrical circuit, an optical device electrically connected to the photoelectrical signal chip, and a first optical waveguide aligned to the optical device for optical coupling and tapered to have a smaller aperture in an output node for outputting the optical signals smaller than that in an input node for inputting the optical signals are mounted, and a back plane including a groove into which the system board is inserted and a second optical waveguide optically coupled to the first optical waveguide and tapered to have a smaller aperture in the output node than in the input node.

Abstract: A method of manufacturing an optical waveguide using a laser direct writing method is disclosed. More particularly, a method for improving refractive index profile of the optical waveguide by overlapping two or more beams using Gaussian laser beam is provided. In addition, it can accomplish an improved waveguide characteristics such as an offset structure of an S-bend type optical waveguide and an asymmetrical curve optical waveguide by individually adjusting the overlapped laser beams.

Abstract: An OLED apparatus includes a substrate, a TFT, a scan line, a data line, a power supply line, a color filter, a pixel electrode, a light emitting layer and a counter electrode. The TFT is formed on the substrate. The scan line transmits a scan signal to a control electrode of the TFT. The data line transmits a data signal to the TFT. Bias voltages are applied to the TFT through the power supply line. The color filter overlaps with one or more of the scan line, the data line and the power supply line. The pixel electrode overlaps with one or more of the scan line, the data line and the power supply line. The light-emitting layer is formed on the pixel electrode. The counter electrode is formed on the light-emitting layer. Therefore, cross talk may be reduced and the opening ratio increased to enhance luminance.

Abstract: Provided is a differential pair interconnection apparatus for providing a differential signal on a printed circuit board having signal paths for high-speed differential signals to an external circuit and providing a signal inputted from the external circuit to the printed circuit board without any signal distortion. According to the differential pair interconnection apparatus of the present invention, there can be provided two separate physical channels without impedance mismatching.

Abstract: The present invention relates to a parallel optical interconnection module for transmitting an optical signal over an optical fiber and receiving an optical signal from the optical fiber. According to the present invention, a reflection surface is formed at the end of the optical waveguide forming a core so that the path of light can be exactly changed and is focused. A light source/photodetector is buried within a trench using the silicon optical bench and an optical waveguide is manually aligned on the surface of the silicon optical bench, so that alignment error between the light source/photodetector and the optical waveguide can be minimized. A ferrule into which the optical waveguide is inserted is fixed to an adaptor so that alignment error between the optical waveguide and the light source/photodetector is minimized. Therefore, the present invention can minimize the coupling loss in the process during which the optical signal is transmitted to increase the optical output.

Abstract: An electro-optical circuit board (EOCB) in which an optical waveguide for transmitting an optical signal, and a driving unit/receiving unit and an optical source/optical detector for converting an electrical signal into the optical signal, and vice versa are integrated. The EOCB has a structure from which a lens is excluded for the purpose of an economical and efficient optical coupling between the optical waveguide and the optical source/optical detector. The optical source/optical detector are buried within a trench of a metal optical bench. The optical waveguide is then attached on the surface of the optical source/optical detector by means of an epoxy.

Abstract: A backlight assembly includes a light supplying part and a light guide plate. The light supplying part includes a white light source and a monochromatic light source that generates a monochromatic light. The white light source generates a white light responsive to an electric power provided from exterior to the backlight assembly. The light guide plate is disposed adjacent to a side of the light supplying part. The light guide plate includes a light guiding region where the white light and the monochromatic light are guided into and a peripheral region that surrounds the light guiding region. Therefore, color reproducibility of an LCD apparatus is increased so that an image display quality of the LCD apparatus is improved.

Abstract: A method of manufacturing an optical waveguide using a laser direct writing method is disclosed. More particularly, a method for improving refractive index profile of the optical waveguide by overlapping two or more beams using Gaussian laser beam is provided. In addition, it can accomplish an improved waveguide characteristics such as an offset structure of an S-bend type optical waveguide and an asymmetrical curve optical waveguide by individually adjusting the overlapped laser beams.

Abstract: The present invention relates to an electro-optical circuit board (EOCB) in which an optical waveguide for transmitting an optical signal, and a driving unit/receiving unit and an optical source/optical detector for converting an electrical signal into the optical signal, and vice versa are integrated. The EOCB has a structure from which a lens is excluded for the purpose of an economical and efficient optical coupling between the optical waveguide and the optical source/optical detector. The optical source/optical detector are buried within a trench of a metal optical bench. The optical waveguide is then attached on the surface of the optical source/optical detector by means of an epoxy. It is thus possible to minimize an alignment error between the optical source/optical detector and the optical waveguide.

Abstract: The present invention relates to a parallel optical interconnection module for transmitting an optical signal over an optical fiber and receiving an optical signal from the optical fiber. According to the present invention, a reflection surface is formed at the end of the optical waveguide forming a core so that the path of light can be exactly changed and is focused. A light source/photodetector is buried within a trench using the silicon optical bench and an optical waveguide is manually aligned on the surface of the silicon optical bench, so that alignment error between the light source/photodetector and the optical waveguide can be minimized. A ferrule into which the optical waveguide is inserted is fixed to an adaptor so that alignment error between the optical waveguide and the light source/photodetector is minimized. Therefore, the present invention can minimize the coupling loss in the process during which the optical signal is transmitted to increase the optical output.

Abstract: A compliant press-fit pin for electrically coupling a first board to a second board via a plated through hole formed in the second board, includes: an upper part for electrically fixing the first board; a lower part for electrically coupling the first board to a third board via the plated through hole formed in the second board; and a press-fit part located between said upper part and said lower part and containing a fixed beam and a compliant cantilever beam, for electrically coupling the first board fixed to said press-fit part to the second board, wherein the fixed beam and the compliant cantilever beam provide a retention force against a wall of the plated through hole, thereby electrically press-fitting the compliant press-fit pin into the plated through hole, when said press-fit part is inserted into the plated through hole.

Abstract: A method of ferrules used in an optical connector for connection and short-circuit of making multichannel optical signals. Heretofore, many fiber receiving holes have been arranged along a line at regular intervals with tolerance amounting to less than 1 micron. 10 and connect two ferrules, a precisely processed cylindrical metal guide pin under 1 micron, precise pitches formed in ferrules and a metal pin guide hole are used, Consequently, it has been necessary to maintain a high degree of precision. The present invention maintains a high degree of precision by reverse direction connection dependent merely on a predetermined height a reference plane. The reference plane is formed by relatively easy plane processing as the method of maintaining precise height and directivity of flow is added to the inside of a mold.