Abstract: Provided are a liquid crystal panel assembly having no light guide plate (LGP) and a liquid crystal display apparatus. The liquid crystal panel assembly includes: a light source which generates light; a liquid crystal panel which displays the light generated from the light source as an image; at least one optical film disposed at a rear of the liquid crystal panel; a reflector sheet which is disposed at a rear of the optical film and reflects the light from the light source toward the optical film; a reflector which concentrates the light from the light source; an upper chassis and a lower chassis which house the light source, the liquid crystal panel, the optical film, the reflector sheet, and the reflector therebetween; and a middle chassis installed between the upper chassis and the lower chassis, wherein the reflector and the middle chassis form a single body.

Abstract: A step-down converter is provided. The step-down converter includes a DC-DC converter including a boost capacitor and an NMOS transistor, the DC-DC converter converting an input direct current (DC) voltage to an output DC voltage; and an electric discharge circuit which adjusts the output voltage to be less than or equal to the input voltage.

Abstract: A backlight unit is provided which includes: a light guide plate which guides incident light from a lateral side of the light guide plate toward a liquid crystal display (LCD) panel placed in front of the light guide plate; a light source unit which includes a light source which emits the light and a light source supporting member which supports the light source and is arranged adjacent to the lateral side of the light guide plate; a supporting frame which is arranged in the backlight unit; a quantum dot (QD) bar which is arranged between the lateral side of the light guide plate and the light source and changes a color of the light emitted from the light source; and a QD-bar fastening unit which fastens the QD bar to at least one of the light source supporting member and the supporting frame.

Abstract: An LGP-less liquid crystal panel assembly includes at least one light source generating light; a liquid crystal panel displaying the light generated from the light source, as an image; at least one optical film arranged behind the liquid crystal panel; an upper chassis and a lower chassis accommodating the light source, the liquid crystal panel, and the optical film; and at least one tension member applying tension to the optical film so as to prevent the optical film from drooping.

Abstract: A planar lighting apparatus, liquid crystal display having the same and a television having the same are provided. The planar lighting apparatus includes a reflection sheet; a prism sheet which is spaced apart from the reflection sheet, and which includes a prism pattern on a surface of the prism sheet facing the reflection sheet; and a light source which emits light toward a space between the reflection sheet and the prism sheet and is disposed on at least one side of the space, wherein the prism pattern has a shape which reflects the light emitted from the light source.

Abstract: A scanning backlight unit, a liquid crystal display and television and a television are provided herein. The backlight unit including a light source unit having plural groups of light sources which emit light in a main incidence direction; a control unit which controls the plural groups of light sources; and a light guiding plate having a bottom surface formed with a dispersion pattern dispersing the light received from the light source unit, wherein the dispersion pattern includes a plurality of grooves, with a groove of the plurality of grooves having a shape with a first size parallel to the main incidence direction and a second size perpendicular to the main incidence direction, and wherein the first size is larger than the second size.

Abstract: A light guide plate, a backlight unit and a display apparatus including the same and a manufacturing method thereof are provided. The light guide plate includes: a body which includes an incident surface and an emission surface; at least one first optical path converter which is formed in an opposite surface of the body which is opposite to the emission surface, and extends continuously in a first direction to convert an optical path of an incident light introduced through the incident surface so that the incident light passes through the emission surface; and at least one second optical path converter which is formed in the opposite surface, and is arranged discontinuously in at least one row extending in the first direction.

Abstract: A back light assembly having uniform interior temperature to prevent quality deterioration of a liquid crystal display and a liquid crystal display including the same includes a light guide plate, a light source unit to emit light to an edge of the light guide plate, a lower cover to receive the light guide plate and the light source unit, heat generated from the light source unit being transferred to the lower cover, and a heat insulator provided adjacent to at least one region of the lower cover in an area to correspond to the light source unit.

Abstract: A display apparatus having a display and a backlight unit (BLU) which provides backlight to the display are provided. The BLU includes a first light source module in which a plurality of light sources are arranged, a second light source module in which a plurality of light sources are arranged, and a light source driving unit which drives the first light source module and second light source module. The first light source module and second light source module are connected to each other by a first connector.

Abstract: A step-down converter is provided. The step-down converter includes a DC-DC converter including a boost capacitor and an NMOS transistor, the DC-DC converter converting an input direct current (DC) voltage to an output DC voltage; and an electric discharge circuit which adjusts the output voltage to be less than or equal to the input voltage.

Abstract: A display apparatus for calibrating a grayscale data including a timing controller, and a method for driving a panel are provided. A display apparatus includes a timing controller which calibrates the grayscale data of the current frame using the grayscale data of the previous and the current frame and a driving unit which drives a panel using the calibrated grayscale data of the current frame. By generating calibrated grayscale data which are variable according to the change of grayscale, response times of liquid crystal may be improved.

Abstract: A control voltage generator and a related method generate control voltages having a phase difference. The control voltage generator includes first thru N-th loads (where N is a positive integer no less than 2), and is installed in an electronic device that may experience noise or malfunction when signals having the same phase are simultaneously inputted into the loads. In the control voltage generator, a sawtooth generator generates and outputs a sawtooth signal. and a first driving signal generator compares the sawtooth signal generated by the sawtooth generator with an input signal having information as to the degree of variation of an inherent level, which relates to an inherent function of the electronic device. The comparison result is outputted as a first driving signal. The control voltage generator also includes second thru N-th driving signal generators.

Abstract: A power supply control mechanism for a display device automatically controls power supply according to the operation of a computer, and includes: an oscillating circuit generating a pulse of a given cycle; an oscillating circuit operation sensor monitoring whether or not the oscillating circuit operates; a power supply sensor outputting a logical product of an output pulse of the oscillating circuit operation sensor according to whether or not the display device is turned on; a digital/analog converter converting an output of the power supply sensor into an analog signal; a power switching unit which switches according to an output of the digital/analog converter; and a pulsewidth modulation integrated circuit for controlling a pulse duty ratio of the power applied to each circuit of the display device according to an output of the power switching unit.

Abstract: A computer system capable of providing a visual display of a display power management signaling (DPMS) mode for user selection of different power save modes of operation. The DPMS mode is used to convert a power supply mode to a power save mode in a computer peripheral such as a monitor. The computer system includes a micro-computer installed in the monitor for determining whether the frequency of sync signals are within predetermined bands to set the power save mode, a switching element installed in the computer for controlling the power supply of a predetermined voltage under control of the micro-computer, and a luminance element installed at a predetermined location of a keyboard and powered by the operation of the switching element for providing a visual display of the DPMS mode for user selection of different power save modes of operation.

Abstract: A computer having a monitor driving device for controlling video display turn-on time includes a power supply, a computer circuit, a monitor which may be integrated with the computer in one body, and a preheating controller. The monitor driving device for controlling video display time can reduce a time required for displaying a video image again without influencing the life span of a cathode ray tube when power is applied to use the monitor again after previously cutting off the power supplied to the monitor to reduce power consumption by the monitor which may be integrated with the computer in one body.