摘要:
An active matrix organic light emitting diode AMOLED driving circuit using current feedback that ensures the uniformity of brightness in pixels of a flat panel display and shortens the time required to input accurate current to respective pixels in the driving circuit. The prevent invention provides an AMOLED driving circuit using current feedback, comprising: a current digital-to-analog converter outputting a current corresponding to input digital data; a first differential amplifier connected to the current digital-to-analog converter and controlling the input data current and a driving current of a driving transistor of a pixel circuit to be identical to each other; a current mirror mirroring driving current of an organic light emitting diode of the pixel circuit to an input side of the first differential amplifier; and a second differential amplifier coupled to the current mirror and controlling charge and discharge speeds of parasitic capacitance of the pixel circuit.
摘要:
The invention relates to a reformer with superior heat characteristics for supplying hydrogen gas as fuel to a fuel cell of a fuel cell system. The reformer includes a base having an evaporating part, a reforming part and flow paths each formed in the evaporating part and the reforming part. The reformer also includes heaters each attached on the base corresponding to the positions of the evaporating part and the reforming section. The reformer further includes a catalyst disposed in the reforming section of the base and a porous part integrally formed in a portion of the base extending from the evaporating part to the heater. The reformer has the porous part including nano-pores to increase heat absorption, preventing heat losses. This allows increased heat efficiency and sufficient heat supply with minimal energy, thereby enhancing operational characteristics of the reformer.
摘要:
The present invention relates to a crude exopolysaccharides (EPS) produced from Phellinus baumii mycelium comprising mannose and/or arabinose and a preparation method thereof.
摘要:
A method for fabricating a semiconductor device includes forming a doped polysilicon layer on a semiconductor substrate forming an oxide film for device isolation in a predetermined region of the doped polysilicon layer and the semiconductor substrate, forming an etch stop layer on the oxide film for device isolation and the doped polysilicon layer, etching a predetermined region of the etch stop layer, the doped polysilicon layer and the semiconductor substrate to form a trench defining a gate region, depositing a gate oxide film on the gate region, forming a gate electrode layer and a hard mask layer filling the trench, and polishing the gate electrode layer and the hard mask layer to expose the etch stop layer and to form a gate in the gate region.
摘要:
Disclosed herein is a light-diffusing sheet, composed of a base sheet including a synthetic resin and organic particles or inorganic particles, in which voids are formed around the organic or inorganic particles, a light-diffusing layer laminated on one surface of the base sheet, and an antiblocking layer laminated on the other surface of the base sheet. In the light-diffusing sheet of this invention, since the voids are formed around the organic or inorganic particles in the base sheet, light transmittance and light diffusibility are increased via maximizing scattering and reflection upon passing light through the base sheet, in particular, the voids, thus providing a light-diffusing sheet capable of increasing the light efficiency of a backlight unit. Thereby, in the case where the light-diffusing sheet of this invention is applied to a backlight unit of a TFT-LCD, vivid and distinct images are realized throughout the surface of the display.
摘要:
An image sensor includes an inner lens to enable incident light to reach a condensing lens, so that the incident light may further reach photodiodes. Light loss can be reduced and photosensitivity can be improved. The image sensor includes at least one microlens that focuses incident light onto at least one photosensor that receives a light signal transmitted from the at least one microlens. The image sensor also includes at least one inner lens, disposed between the at least one microlens and the at least one photosensor, having an upper surface of a predetermined curvature to compensate photosensitivity of light received from the at least one microlens.
摘要:
Provided are a system and method for interworking Service Capability Features (SCFs) and protocols in an open service gateway. The system includes service capability features that generate and process various protocol messages, and a protocol stack that enables an interwork with a communications network. The protocol stack includes: one or more units that maintain various protocols, a unit that performs data connection and transmits and processes messages, and a unit that manages the various protocols. In the protocol stack, protocol identifiers that differentiate the protocols from one another, and message identifiers that differentiate service capability features from one another are stored in the unit that manages the various protocols.
摘要:
Disclosed herein is a functional tunable multichannel filter which is capable of adjusting channel spacing and/or a wavelength location using polarization controllers (λ/2, (λ/4). The functional tunable multichannel filter includes one or more polarization maintaining fibers, a first polarization controller (λ/2), a second polarization controller (λ/4) and a 3 dB coupler. Additionally, the functional tunable multichannel filter is configured to tune a wavelength and adjust channel spacing by adjusting polarization of an optical signal passing through each of the polarization maintaining fibers using the first and second polarization controllers.
摘要:
A refrigerator includes a body having a compartment in the body and a door for opening and closing the compartment, an electrical device movable with respect to the body along a first direction, a conductor electrically connecting the electrical device with the body, and a winding device for adjusting a length of the conductor in the first direction when the electrical device moves along the first direction.