Abstract:
Provided is a method of forming a fine pattern of a polymer thin film using a phenomenon that another material having a large difference in surface energy in comparison with a polymer thin film pattern is dewetted on the polymer thin film pattern. Two polymer materials having a large difference in surface energy can be applied to readily and conveniently form a fine pattern of a polymer thin film of micrometer or sub-micrometer grade.
Abstract:
The inventive concept provides organic light emitting diodes and methods of fabricating the same. The method may include forming an insulating layer on a substrate, coating a metal ink on the insulating layer, thermally treating the substrate to permeate the metal ink into the insulating layer, thereby forming an assistant electrode layer the insulating layer and the metal ink embedded in the insulating layer, and sequentially forming a first electrode, an organic light emitting layer, a second electrode on the assistant electrode layer.
Abstract:
Provided is a white organic light emitting device (OLED), including: a first electrode formed on a substrate; a hole transport layer formed on the first electrode; an emission layer formed on the hole transport layer; an electron transport layer formed on the emission layer; and an color control layer formed on at least one of the hole transport layer, the emission layer and the electron transport layer, and emitting green and/or red by energy transfer from the emission layer. The white OLED emits red, green and blue light with high efficiency, has excellent color reproducibility and a high color reproduction index.
Abstract:
Provided are a resistive memory device and a method of fabricating the same. The resistive memory device comprises an electron channel layer formed by means of a swelling process and an annealing process. Thus, conductive nanoparticles are uniformly dispersed in the electron channel layer to improve reliability of the resistive memory device. According to the method, an electron channel layer is formed by means of a printing process, a swelling process, and an annealing process. Thus, fabrication time is reduced.
Abstract:
An organic thin film transistor (OTFT), a method of manufacturing the same, and a biosensor using the OTFT are provided. The OTFT includes a gate electrode, a gate insulating layer, source and drain electrodes, and an organic semiconductor layer disposed on a substrate and further includes an interface layer formed between the gate insulating layer and the organic semiconductor layer by a sol-gel process. The gate insulating layer is formed of an organic polymer, and the interface layer is formed of an inorganic material. The OTFT employs the interface layer interposed between the gate insulating layer and the organic semiconductor layer so that the gate insulating layer can be protected from the exterior and adhesion of the gate insulating layer with the organic semiconductor layer can be improved, thereby increasing driving stability. Also, since the OTFT can use a plastic substrate, the manufacture of the OTFT is inexpensive so that the OTFT can be used as a disposable biosensor.
Abstract:
Provided are a detector and a method of fabricating the same. The detector includes a base portion; first and second electrodes disposed on the base portion and spaced apart from each other; a reactant layer disposed between the first and second electrodes on the base portion to react with a specific functional group contained in a fluid; and a protection medium layer surrounding the first and second electrodes and forming a reaction space to expose a portion of the reactant layer. In the detector, electrodes can be effectively protected at low cost, and a path for guiding a fluid to be detected can be provided.
Abstract:
Provided is a tactile and visual display device enabling visual information and tactile information to be simultaneously sensed. The tactile and visual display device includes: a display unit comprising a plurality of scan lines, a plurality of data lines and a plurality of pixels; a tactile sensation generator mounted over the display unit, transmitting light emitted from the pixels, comprising a transistor electrically connecting a plurality of corresponding pixels formed to correspond to the pixels with adjacent corresponding pixels, and generating an electrostatic force and a magnetostatic force; and a sensor in contact with the corresponding pixels to sense the generated electrostatic force or magnetostatic force. Accordingly, the texture of an image displayed on a display is provided as tactile information using an electrostatic force and a magnetostatic force, so that tactile information as well as visual information of the conventional display may be simultaneously provided.
Abstract:
An organic electroluminescent device with an encapsulation film formed by wet processing and a manufacturing method thereof. The organic electroluminescent device includes a laminate structure including an anode, an organic light emitting layer and a cathode sequentially disposed on a substrate, and an encapsulation film having a polymer layer made of a polymerization product of a vinyl monomer covering the laminate structure. In the method for manufacturing the organic electroluminescent device, a laminate structure including an anode, an organic light emitting layer and a cathode sequentially disposed is formed on a substrate. An organic solution containing a vinyl monomer and a polymerization initiator is coated on the laminate structure. A polymerization reaction is induced to the organic solution coated on the laminate structure, thereby forming an encapsulation film made of a polymer layer on the laminate structure.
Abstract:
Provided is an organic electroluminescent (EL) device including a substrate, a transparent electrode formed on the substrate, an organic light-emitting layer formed on the transparent electrode, a metal electrode formed on the organic light-emitting layer, a first insulating layer formed on the metal electrode, a gate electrode formed on the first insulating layer, a second insulating layer formed on the gate electrode, an organic semiconducting layer formed on the second insulating layer, a source electrode connected to one end of the organic semiconducting layer on the second. insulating layer and connected to the metal electrode, and a drain electrode connected to the other end of the organic semiconducting layer on the second insulating layer.
Abstract:
Provided is a radio frequency identification (RFID) tag. The RFID tags includes: a conductive layer and a conductive line disposed above and below an insulation layer, respectively; an antenna connected to one end of the conductive line; a resistor connected to the other end of the conductive line; a first conductive plate connected to the conductive line and constituting a first capacitor in conjunction with the conductive layer and the insulation layer; and a first sensing device connected between the conductive line and the conductive layer and having an impedance changed according to a sensing of a first target material.