摘要:
A transreflection-type liquid crystal display (LCD) device includes a plurality of gate and data lines on a substrate crossing each other defining a plurality of pixel regions, a plurality of storage lines parallel to the gate lines, each storage line positioned between the gate lines, a plurality of thin film transistors disposed at the crossings of the gate and data lines, each thin film transistor having source and drain electrodes and a U-shaped channel region, a negative-type organic insulating layer within the pixel region except for a transmission part, the negative type organic insulating layer having at least one of concave and convex patterns thereon, a reflective electrode on the negative-type organic insulating layer within the pixel region except for the transmission part, and a transparent electrode within the pixel region in electrical contact with the drain electrode.
摘要:
Provided is an apparatus for automatic gain control (AGC) widely used in a receiver of a wireless communication system. The receiver of a wireless communication system includes: a step variable gain amplifier and an analog variable gain amplifier disposed in the path of a wireless signal and amplifying the wireless signal; an analog gain control unit for generating a gain control voltage for feedback-controlling an amplification value of the analog variable gain amplifier; a digital gain control unit for receiving the control voltage and generating a digital code determining an amplification value of the step variable gain amplifier. The apparatus for AGC constituted as described above can reduce power consumption and the number of devices by efficiently running an AGC loop in an analog domain, and can be embodied at low cost in a structure appropriately controlling the step gain amplifier and the analog gain amplifier.
摘要:
Provided are a chip, a chip stack, and a method of manufacturing the same. A plurality of chips which each include: at least one pad formed on a wafer; and a metal layer which protrudes up to a predetermined thickness from the bottom of the wafer and is formed in a via hole exposing the bottom of the pad are stacked such that the pad and the metal layer of adjacent chips are bonded. This leads to a simplified manufacturing process, high chip performance and a small footprint for a chip stack.
摘要:
A wireless receiver is provided that includes a multi-step gain-control low-noise amplifier (LNA) stage and a mixer stage. The LNA stage is operable to amplify at least one input signal to generate at least one LNA output. The mixer stage is directly coupled to the LNA stage (without an intervening external bandpass filter) and is operable to down-convert the LNA output to generate a mixer output.
摘要:
An approach is provided for a parallel printing solution wherein one of a plurality of printing devices is designated a “master” device and receives print data, portions of which are then transmitted to the remainder of printing devices for processing according to instructions from the master device. According to one embodiment of the invention, a user defines certain parameters and administrative criteria at a workstation, from which the user sends print data to the master device. In one embodiment, based upon user-defined parameters and independently acquired information, the master device divides the print data into print jobs and sends the appropriate print data to the plurality of print devices for processing.
摘要:
A driving apparatus and method of an LCD device improves the brightness and the contrast ratio of an image. The driving apparatus includes an LCD panel for displaying an image corresponding to a data signal. A data driver supplies the data signal to the LCD panel. A gate driver supplies a scan signal to the LCD panel. A picture quality improving unit generates a histogram by dividing brightness components of input data into levels, generates data with an extended contrast ratio, and then generates a brightness control signal according to the average value of the histogram. A timing controller supplies reordered data, and controls the data driver and the gate driver. A backlight provides light to the LCD panel. An inverter drives the backlight based on the brightness control signal.
摘要:
A method for driving a flat panel display to improve an image quality and a lifetime of the flat panel display is disclosed. The method for driving the flat panel display includes the steps of: a) storing electric-charges contained in a parasitic capacitor of a data line and a pixel-storage capacitor (Cst) in each pixel via a pixel transistor connected to the data line, which enters a floating state during a predetermined time other than a light-emitting time caused by a data-current writing operation, until a current voltage reaches a threshold voltage of the pixel transistor; and b) performing the writing of a data current corresponding to a pixel to be driven by the data line via the pixel transistor, such that the flat panel display emits light.
摘要:
A cooling system includes a cooling cycle which includes an evaporator for cooling air; and a thermoelectric module using a Peltier effect to provide a heat absorption portion and a heat discharge portion, the air cooled by the evaporator being further coolable by the heat absorption portion.
摘要:
Provided is a method of integrating an organic light emitting diode (OLED) and an organic field effect transistor (OFET) including: preparing an organic field effect transistor including at least one first electrode and an organic semiconductor on a first substrate; preparing an organic light emitting diode including at least one second electrode and an organic emission layer on a second substrate; disposing the OFET and the OLED to make the first and second electrodes opposite to each other; inserting an insulating layer, to which a predetermined metal contact line for electrically connecting the first and second electrodes is securely fixed, between the OFET and the OLED; and adhering the OFET and the OLED to integrate them as one device, whereby it is possible to effectively perform active driving, to extend a lifetime due to a high aperture ratio, and to produce the device using a simple process at a low cost.