摘要:
An apparatus and method for driving a light source of a liquid crystal display device are provided. The apparatus includes a liquid crystal display panel, a backlight unit including a plurality of light emitting diodes (LEDs) to irradiating light to the liquid crystal display panel, and a driver to selectively drive the LEDs and selectively control a brightness of light generated by the LEDs.
摘要:
A driving apparatus and method are presented to drive lamps that irradiate a liquid crystal display panel of a liquid crystal display device. A picture implementing period, during which a picture is implemented by the liquid crystal display device, and a shorter, scanning period before the picture implementing period are established. An output power supplied to the lamps to set a reference brightness is determined. A lamp driver changes a duty ratio and/or an amplitude of an AC signal supplied to the lamps to establish the reference brightness during the scanning period. The duty ratio/amplitude of the AC signal is adjusted dependent on the characteristics of the liquid crystal material in the liquid crystal display.
摘要:
The liquid crystal display device includes a histogram analyzer analyzing a histogram of an input image and determining the input image as being in one of a low brightness mode, a normal mode, and a high brightness mode based on the histogram analysis, a back light controller controlling a maximum brightness of a back light unit based on the mode determination, and a data modulator enlarging the histogram of the input image to modulate data of the input image. The histogram analyzer detects a most frequent value of gray scale occurring most frequently in the input image of one frame, compares the most frequent value with a predetermined low reference gray value and a predetermined high reference gray value, and determines the input image as in one of the low brightness mode, the normal mode, and the high brightness mode based on the compared result.
摘要:
A display device integrated with a touch panel is disclosed, which can use various types of input devices. Thus, in addition to conductive devices, a gloved hand or a non-conductive stylus pen can be used as an input. The touch panel includes a supporting substrate; a first transparent conductive layer having a first electrode for applying a voltage to the supporting substrate; a second transparent conductive layer having a second electrode and facing the first transparent conductive layer; an adhesive for attaching the first and second transparent conductive layers to each other; and a passivation film on an outer surface of the second transparent conductive layer.
摘要:
The present invention relates to a photosensitive composition comprising a triazine-based photoactive compound containing oxime ester. The photosensitive composition according to the present invention has good sensitivity, retention rate, mechanical strength, heat resistance, chemical resistance and developing durability since it contains, as photopolymerization initiator, a compound having an oxime ester group and a triazine group in one molecule and thus effectively absorbs UV radiation. Therefore, the photosensitive composition according to the present invention is advantageous not only in curing of materials for color filters, resin black matrixes, column spacers, overcoats and passivation films of liquid crystal displays, but also in high temperature process characteristics.
摘要:
A light emitting diode package includes an electrode pattern over a substrate, an electrode adhesive on the electrode pattern, a heat dissipating layer over the substrate, a body part abutting the heat dissipating layer, a light emitting diode chip on the body part, and a terminal part connected to the light emitting diode chip and attached to the electrode adhesive.
摘要:
Flash memory devices having a cell string structure. According to the present invention, the size of a first group of memory cells connected to a first word line and a second group of memory cells connected to a last word line is formed greater than that of a third group of memory cells respectively connected to the remaining word lines other than the first and last word lines. Accordingly, the program speed of the first and second groups of the memory cells can be improved.
摘要:
A back light unit and an LCD device using the same in which current which flows in a plurality of light emitting diodes (LEDs) is uniformly controlled having a small PCB is provided. The back light unit includes a plurality of LED arrays having LEDs and a detector which detects a feedback signal which corresponds to a current that is input to the LEDs. The backlight unit also includes a driver which drives the LEDs in accordance with the feedback signal from the detector.
摘要:
A strontium silicate-based phosphor, a fabrication method thereof, and an LED using the strontium silicate-based phosphor are provided. The phosphor is applied to a long wavelength ultraviolet LED, an active luminous LCD, etc., to enable an improvement in the color purity and to enhance the luminous efficiency. The strontium silicate-based phosphor is expressed by a chemical formula: Sr3-xSiO5:Eu2+x wherein x is 0
摘要:
A fluorescent lamp driving unit includes fluorescent lamps, wherein each fluorescent lamp includes a first end and a second end opposing the first end; an inverter for driving the plurality of fluorescent lamps to emit light; and a controller for electrically connecting and disconnecting the plurality of fluorescent lamps to and from the inverter.