Abstract: A plurality of gray-scale values is extracted from image signals corresponding to a dimming area to calculate a mean value of the gray-scale values, and at least one of a variance, a standard deviation, a kurtosis, a skewness, a central moment, and an image moment is calculated using the mean value. Then, a representative gray-scale value corresponding to the dimming area is determined using the calculated values, and a dimming function for the light sources included in the dimming area is determined based on the representative gray-scale value. Then, the light sources included in the dimming area are driven based on the dimming function.

Abstract: A timing controller, a liquid crystal display (LCD) comprising the same and a driving method of the liquid crystal display, in which the LCD includes an LCD panel, a light source unit divided into n light-emitting blocks providing light to the LCD panel, a side member reflecting the light emitted from the light source unit, a timing controller determining a final brightness of each of the n light-emitting blocks and providing final light data corresponding to the final brightness, the final brightness being determined using reflected brightness based on the light reflected from the side member, and a backlight driver controlling the brightness of each of the n light-emitting blocks in response to the final light data.

Abstract: The present invention provides for a process of making a Ni-based lithium transition metal oxide cathode active materials used in lithium ion secondary batteries. The cathode active materials are substantially free of Li2CO3 impurity and soluble bases.

Abstract: A liquid crystal display (LCD) includes: a light source unit to provide light to a liquid crystal panel and includes first point light sources and second point light sources; a first timing controller to transmit a first image signal and a second image signal to the liquid crystal panel; a second timing controller to transmit optical data, which includes first information to turn on the first point light sources and the second point light sources at different times; and a light source driver to control the first point light sources and the second point light sources to be turned on and off according to the optical data. A method of driving an LCD includes turning on and off first and second point light sources according to received first and second image signals.

Abstract: The present invention provides for a process of making a Ni-based lithium transition metal oxide cathode active materials used in lithium ion secondary batteries. The cathode active materials are substantially free of Li2CO3 impurity and soluble bases.

Abstract: The present invention provides for lithium ion secondary batteries that use Ni-based lithium transition metal oxide cathode active materials. The cathode active materials are substantially free of Li2CO3 impurity and soluble bases.

Abstract: The present invention provides for Ni-based lithium transition metal oxide cathode active materials used in lithium ion secondary batteries. The cathode active materials are substantially free of Li2CO3 impurity and soluble bases.

Abstract: In a display apparatus having a backlight unit, a light unit includes plural light source strings commonly connected to an output terminal of a boosting circuit to generate light in response to a light source driving voltage. The light source strings are grouped into plural light generating groups. Plural driving circuits are respectively connected to the light generating groups, and each driving circuit sequentially outputs feedback voltages from the light source strings of a corresponding light generating group. A minimum voltage detecting circuit compares the feedback voltages with each other from the driving circuits to detect a minimum voltage and outputs a control signal according to the detected minimum voltage. A voltage control circuit controls a voltage level of the light source driving voltage in response to the control signal. Accordingly, although the number of the driving circuits increases, power consumption used in each driving circuit may be reduced.

Abstract: A method for driving a light source module, the light source module including a plurality of light-emitting blocks, a driving mode of the light-emitting block providing light to a plurality of pixels displaying a unit image is determined by analyzing grayscale values corresponding to the pixels. A second driving signal is applied to the light-emitting block determined to be in a boosting mode, the second driving signal having a level higher than the level of a first driving signal applied to the light-emitting block determined to be in a normal mode.

Abstract: A backlight assembly, which can provide enhanced light emitting efficiency, and a display device, are provided. The backlight assembly includes a light generating unit comprising a substrate and a point light source connected to the substrate, and a receiving container positioned to receive light from the light generating unit, the receiving container comprising an embossing that corresponds to the point light source.

Abstract: A liquid crystal display device and a method of driving the same are provided for one or more embodiments. The liquid crystal display device includes: a liquid crystal panel including a plurality of display blocks and displaying an image in response to image signals; a plurality of light-emitting blocks emitting light to the liquid crystal panel and corresponding to the plurality of display blocks; a first look-up table including a normalized value obtained by normalizing an initial duty ratio corresponding to the brightness of the image to a maximum duty ratio corresponding to the maximum brightness of the image; and a timing controller receiving the normalized value corresponding to each of the light-emitting blocks from the first look-up table and using the normalized value to provide an optical data signal corresponding to each of the light-emitting blocks.

Abstract: A method of driving a light source of a light source module including a red light source, a green light source and a blue light source, includes sensing a luminous intensity of the environment; and adjusting a wavelength of light generated from the light source module according to the luminous intensity of the environment.

Abstract: A light source apparatus includes a light source module, a local dimming control part and a light source driving part. The light source module includes a plurality of light-emitting blocks. Each of the light-emitting blocks includes a first color light source, a second color light source and a third color light source, respectively. The local dimming control part drives the light-emitting blocks by blocks. The local dimming control part sets a reference duty signal for first, second and third color driving signals in accordance with a driving mode of the light source module. The light source driving part generates the first color driving signal, the second color driving signal and the third color driving signal by using the reference duty ratio set in accordance with the driving mode and a driving current having a same peak current level in accordance with the driving mode.

Abstract: A method of driving a light source in a normal mode and an increased luminance mode, based on a gradation data of an image signal, by using driving blocks each having a plurality of light-emitting blocks, includes applying, during the increased luminance mode, both a first driving voltage which drives a first driving block of the driving blocks during the normal mode, and a second driving voltage which drives a second driving block of the driving blocks during the normal mode, to the first driving block to increase a luminance of the first driving block when the first driving block is driven by a luminance greater than a luminance corresponding to the gradation data of the image signal.

Abstract: A light source module of a display device comprises light-emitting blocks each of which comprises multiple sets of light sources, with different sets emitting different colors (e.g. red, green and blue). Each set is independently controllable according to one or more driving parameters.

Abstract: A display device with improved display quality is provided. The display device includes an LED light source emitting light, a display panel receiving the light to display an image, and a backlight driver adjusting the magnitude and the duty ratio of an LED current I_LED flowing through the LED light source. The waveform of the LED current I_LED includes at least one of a rising section in which the magnitude of the LED current more gradually increases from a turn-off current value to a peak value, and a falling section in which the magnitude of the LED current more gradually decreases from the peak value to the turn-off current value. This acts to reduce waterfall noise.

Abstract: The present invention provides a powderous lithium transition metal oxide with the composition as represented by the below Formula and prepared by solid state reaction in air from a mixed transition metal precursor and Li2CO3, with being practically free of Li2CO3 impurity: LixMyO2 wherein M=M?1?kAk, where M?=Ni1?a?b(Ni1/2Mn1/2)aCob on condition of 0.65?a+b?0.85 and 0.1?b?0.4; A is a dopant; and 0?k?0.05; and x+y=2 on condition of 0.95?x?1.05. The Ni-based lithium transition metal oxide according to the present invention has a well-layered structure, and also improved safety, cycling stability and stability against aging and low gas evolution during storage, when used as an active material for cathode of lithium secondary batteries, because it has a high sintering stability and is substantially free of soluble bases.

Abstract: A light source driving device includes a resolution analyzing part, a dimming block adjusting part, a local dimming part and a light source unit. The resolution analyzing part obtains an image resolution. The dimming block adjusting part adjusts the size or the number of dimming blocks generating light in a local dimming method in response to the resolution. The local dimming part generates a local dimming signal for individually driving the dimming blocks in response to the image data and the size or the number of dimming blocks. The light source unit is driven by the local dimming signal to generate light. The size or the number of the dimming blocks is adjusted to be optimized for the obtained image resolution, so that regardless of the image resolution, a local dimming signal corresponding to the size and the number of the dimming blocks may be generated.

Abstract: A liquid crystal display (“LCD”) includes; a liquid crystal panel including a plurality of display blocks, a light-emitting unit which provides light to the liquid crystal panel and includes a plurality of light-emitting blocks corresponding to the display blocks, respectively; and a timing controller which provides an optical data signal for controlling the light-emitting blocks, wherein the optical data signal includes a plurality of scan signals and a plurality of dimming signals which are alternatingly arranged, and each of the dimming signals controls a luminance of a corresponding one of the light-emitting blocks.

Abstract: There is provided a method of boosting a local dimming signal. In the method, it is determined whether or not local dimming signals, which are applied for individually driving light source blocks per frame, satisfy boosting conditions. Then, a predetermined local dimming signal corresponding to at least one of the light source blocks is boosted to a reference luminance value when the local dimming signals continuously satisfy the boosting conditions, and the boosting luminance of the predetermined local dimming signal at the reference luminance value is gradually decreased after a light adaptation time of an observer's eye. When the luminance of light source blocks that are boosted is gradually decreased before the light adaptation time or luminance of light source blocks that will be boosted is gradually increased to the light adaptation time, power consumption required to boost the light source blocks may be decreased.