摘要:
A liquid crystal display (LCD) includes: a gate-off voltage generator including a temperature compensation unit which comprises a constant voltage output device and which outputs a gate-off voltage having a level which varies based on a change in ambient temperature; a clock generator outputting a first clock signal and a second clock signal; a gate driver outputting gate signals; and a plurality of pixels which turn on or off based on the gate signals, wherein the constant voltage output device outputs a temperature variable voltage having a value based on a voltage difference between a reference terminal of the constant voltage output device and an input terminal of the constant voltage output device, and a voltage difference between the reference terminal and the input terminal of the constant voltage output device varies based on the change in the ambient temperature.
摘要:
Provided is a film formation composition for improving the blackening of the surface of a steel sheet, particularly, the surface of a steel sheet containing Mg on the surface thereof, such as a Mg sheet, a plated steel sheet having a plated layer comprising Mg, and the like, a steel sheet comprising a film formed by the composition, and a method for forming the film. Provided are a film formation composition for preventing the blackening of the surface of the steel sheet, comprising: 2.5-7.5 parts by weight of a water-soluble phenoxy resin; 0.1-0.5 parts by weight of a fluorometal acid; 0.1-0.5 parts by weight of a metal compound; and 1-5 parts by weight of a cross-linking agent.
摘要:
In a backlight device and a driving method thereof, a voltage controller controls a voltage level of a first input voltage in response to a dimming signal to output a second input voltage. A pulse generator receives the second input voltage from the voltage controller and generates a pulse signal having a duty ratio corresponding to the dimming signal and a high voltage level corresponding to the second input voltage. An inverter generates a lamp driving signal based on the pulse signal. At least one lamp included in the backlight device is turned on or turned off in response to a lamp driving signal to adjust luminance of the backlight device.
摘要:
In a method of offering an intelligent personalized learning service to learning participants, a pointer is assigned to each learning object and associated with each learning object belonging to a learning object database. A learning subject specific to each learning participant is selected from a learning subject database. Information on attempts at the learning objects associated with selected learning subject is recorded on learning history information of each learning participant. Performance completion information is recorded with respect to the learning objects attempted by the learning participant on the learning history information of each learning participant. A proficiency status of the learning participant is diagnosed for the selected learning subject corresponding to the learning participant based on the learning history information of each learning participant.
摘要:
Provided are a cyclopentaphenanthrene-based compound and an organic EL device using the same. The cyclopentaphenanthrene-based compound is easy to prepare and excellent in solubility, color purity, and color stability. The cyclopentaphenanthrene-based compound is useful as a material for forming an organic layer, in particular, a light-emitting layer in an organic EL device, and as an organic dye or an electronic material such as a nonlinear optical material.
摘要:
Provided is an organic electroluminescent device including an organic layer interposed between a pair of electrodes, the organic layer including a layer formed of a titanium oxide derivative or a mixture layer containing a titanium oxide derivative. The organic electroluminescent device has higher luminescent efficiency, a longer lifetime and a lower operating voltage than a conventional organic electroluminescent device, and can be easily manufactured.
摘要:
An organic light emitting device and a method of manufacturing the same, the organic light emitting device includes a first electrode, a second electrode, and an organic layer that has at least a multi-coated emissive layer and which is interposed between the first and second electrodes. The multi-coated emissive layer is a single layer composed of a neutral emissive material and an no−ne parameter of the emissive layer is greater than an no−ne parameter of a single-coated layer. The organic light emitting device has a longer lifetime and high efficiency.
摘要:
A supporting member for a liquid crystal display device comprises a base substrate, a lamp clip protruded from the base substrate in a first direction to hold a lamp that generates light, a supporting part protruded from the base substrate in the first direction to support a diffusion member that diffuses the light generated from the lamp, and a fixing clip protruded from the base substrate in a second direction substantially opposite to the first direction, wherein the fixing clip combines with a receiving container.
摘要:
Provided are a cyclopentaphenanthrene-based compound and an organoelectroluminescent device employing the same. The cyclopentaphenanthrene-based compound is easy to prepare and excellent in solubility, color purity, color stability, and thermal stability. The cyclopentaphenanthrene-based compound is useful as a material for forming an organic layer, in particular, an emitting layer, in an organoelectroluminescent device, and as an organic dye or an electronic material such as a nonlinear optical material.
摘要:
An organic light emitting device includes a first electrode, a hole injection layer, an inorganic layer, a hole transport layer, an emitting layer which are sequentially formed on the first electrode; and a second electrode. The organic light emitting device has a high emission efficiency and an extended lifetime.