Samsung Electronics Co., Ltd.

Samsung Display Co., Ltd.

Lg Chem, Ltd

Sang-Gil Lee

Gi-Cherl Kim

Jong-Seo Lee

Ju-Young Yoon

Chun-Ho Song

Sang-Yu Lee

Seock-Hwan Kang

Se-Ki Park

Kyung-Uk Choi

Yun-Jae Park

Seung-Hwan Moon

Hyeon-Yong Jang

Don-Chan Cho

Sang-yu Lee

Joo-Woan Cho

Haeil Park

Jin-ha Kim

Jinho Park

Seok-Hyun Nam

Chang-Sun Han

Hyuk-Hwan Kim

Min-Gyu Kim

Mun-Soo Park

Hyun-Seok Ko

Baekhee Lee

Ki-Chan Lee

Ho-yeul Choi

Byung-Gon Kum

Namheon Kim

Taegil Kang

Ju-young Yoon

Nam-Ok Kwon

Eunguk Lee

Eun Guk Lee

Dae-Ho Lee

Ji-Sang Jeong

Kyung Uk Choi

Hyeon-Yonh Jang

Hyun-suk Ko

Hak-lae Lee

Seoek-Hwan Kang

Jaejin Choi

Park Se-Ki

A display device includes a display panel; a color conversion display panel overlapping the display panel; and a polarizing plate positioned between the display panel and the color conversion display panel, wherein the polarizing plate may include a polarization film and a transfer layer overlapping the polarization film, the transfer layer may be positioned between the polarization film and the display panel, and the transfer layer may include an acrylamide-based compound.

Polarizing plate, display device with the polarizing plate, and method of manufacturing the display device

A display device includes a backlight unit. A display module configured to display an image is disposed on the backlight unit. A light conversion member is disposed between the display module and the backlight unit. The backlight unit includes a light source unit configured to generate light and a light guide plate configured to guide the light generated by the light source unit. The light conversion member includes a transfer layer disposed on the backlight unit and a light conversion layer disposed on the transfer layer.

Display device having a light conversion member and method for fabricating the same

A lens has a refractive index of n, and includes a base, a first curved circumferential surface extending from the base, a curved center-edge surface extending from the first curved circumferential surface, and a curved centermost surface extending from the curved center-edge surface. The base includes a groove for receiving a light emitting chip. A distance from a center of the base to a point of the curved center-edge surface is shorter than the radius of curvature for the point of the curved center-edge surface. The curved centermost surface has a concave shape with respect to the base. The lens satisfies A1+A2&#x3c;90+sin(1/n), where A1 an obtuse angle between a main axis and a tangent line of the curved centermost surface, and A2 is an acute angle between a straight line linking the center of the base to the point of the curved centermost surface and the main axis.

Light emitting diode and lens for the same

A backlight assembly includes a light source unit, at least one block driving unit, a controller unit and a noise removing circuit. The light source unit includes a plurality of dimming blocks generating light. The block driving unit drives the dimming blocks. The controller unit controls the block driving unit. The noise removing circuit is connected to the block driving unit and the controller unit to prevent noise from being applied to a reset terminal of the block driving unit.

Backlight assembly

A lens for a light emitting diode is formed with a material having a refractive index of n, and the lens includes a base, a first curved circumferential surface extending from the base, a curved center-edge surface extending from the first curved circumferential surface, and a curved centermost surface extending from the curved center-edge surface. The base includes a groove for receiving a light emitting chip therein. In the lens, a distance from a center of the base to a point of the curved center-edge surface is always shorter than the radius of curvature for the point of the curved center-edge surface. The curved centermost surface has a concave shape with respect to the base. In addition, when an obtuse angle formed between a main axis of the lens and a tangent line of a point of the curved centermost surface is Aand an acute angle formed between a straight line linking the center of the base to the point of the curved centermost surface and the main axis of the lens is Athe lens satisfies the equation: A+A&#x3c;90+sin(1/n).

Disclosed are a display device and a method of driving the same capable of improving display quality and reducing the manufacturing cost. A display device includes a display panel displaying images corresponding to image signals, a light-emission block supplying backlight to the display panel, and a backlight driver outputting a light data signal for determining luminance of backlight. One of a plurality of linear gamma curves is selected from a lookup table in accordance with average image luminance during prescribed frames, and the duty ratio of the light data signal is determined on the basis of the selected linear gamma curve. Each of the linear gamma curves represents the relationship between the average image luminance and the duty ratio of the light data signal.

Display device having variable backlight and method driving the same

A method of driving a display apparatus for an embodiment comprises a light source module divided into a plurality of light-emitting blocks to provide light to a display panel, a local dimming driving part driving the light-emitting blocks, and a timing controller controlling the driving timing of the display panel and the local dimming driving part. The timing controller transmits a luminance pulse having representative grayscale values of an image corresponding to the light-emitting blocks and a synchronization signal including information of a start position of the representative grayscale values to the local dimming driving part. The local dimming driving part drives the light-emitting blocks using the representative grayscale values obtained from the luminance pulse.

Method of driving a display apparatus, and display apparatus and timing controller for performing the method

A light generating module includes a light emitting part and a power supplying part. The light emitting part includes a first region and a second region. First and second lights having different wavelengths from each other are generated in each of the first and second regions. The first region is an outermost region of the light emitting part. The power supplying part applies different currents to the first region from the second region to generate the first and second lights having different intensities from each other. Therefore, color uniformity is increased so that an image display quality is improved.

Light generating module, liquid crystal display device having the same, and method of improving color reproducibility thereof

A power supply is provided, which includes a DC-DC converter being supplied with an external DC input voltage and a first switching control signal and outputting a duty sensing signal of which a magnitude is varied in accordance with the first switching control signal, the duty sensing signal being indicative of a duty ratio of the first switching control signal, and the DC-DC converter converting the input voltage into a DC output voltage of a predetermined magnitude based on the first switching control signal; and a feedback controlling unit comparing the duty sensing signal with a first reference signal to adjust the duty ratio of the first switching control signal.

Power supply, display device, and light source driving apparatus

A backlight unit includes a plurality of light source units arranged in a matrix form, a light source controller outputting a dimming signal to control a brightness of the light source units and a latch signal to control a light source unit row of the plurality of light source units to be sequentially driven according to a predetermined scanning period, and a plurality of light source driving units connected to light source unit columns of the plurality of light source units and supplying driving signals corresponding to the dimming signal to the light source units in the light source unit columns.

Backlight unit, display device comprising the same, and control method thereof

The present invention relates to a styrene-butadiene latex, a preparation method thereof and a coating liquid containing the same, more precisely a styrene-butadiene latex binder for ink-jet paper containing ethylenically unsaturated monomer by 0.1-1.5 weight parts with lowering surface negative charge density, a preparation method thereof and a coating liquid containing the same. The present invention provides a coating liquid for ink-jet paper having excellent price competitiveness and coating work-ability and at the same time reducing energy cost for drying process and thereby provides an ink-jet paper with excellent printing quality.

Styrene-butadiene latex binder for ink-jet paper, preparation method thereof and coating liquid containing the same

A light-generating device includes a driving substrate and a plurality of light source arrays. The driving substrate has a rectangular planar shape. The plurality of light source arrays is formed on the driving substrate. The light source arrays include at least one light emitting diode to generate light in response to power being applied through the substrate, and the light source arrays are spaced apart from each other. Thus, heat generated from the light-generating device is rapidly dissipated from the light-generating device, improving brightness of the light, brightness uniformity of the light and color reproducibility of the light.

Light generating device, backlight assembly having the same, and display apparatus having the backlight assembly

A liquid crystal display apparatus includes a backlight assembly which includes a device for driving the backlight including a light emitting diode ('LED') used as a light source, which has a high efficiency and a high reliability for controlling brightness of each color light. The driving device drives a first, second and third LED unit emitting a first, second and third light, respectively. The driving device includes a first driving part emitting the first light in response to a brightness control signal and outputting a reference control signal in response to a first brightness of the first light, a second driving part driving the second LED units generating the second light of which second brightness is controlled in response to the reference control signal, and a third driving part driving the third LED units generating the third light of which third brightness is controlled in response to the reference control signal.

Device for driving a backlight, backlight assembly, LCD apparatus having the same and method for driving a backlight

A lens for a light emitting diode is formed with a material having a refractive index of n, and the lens includes a base, a first curved circumferential surface extending from the base, a curved center-edge surface extending from the first curved circumferential surface, and a curved centermost surface extending from the curved center-edge surface. The base includes a groove for receiving a light emitting chip therein. In the lens, a distance from a center of the base to a point of the curved center-edge surface is always shorter than the radius of curvature for the point of the curved center-edge surface. The curved centermost surface has a concave shape with respect to the base. In addition, when an obtuse angle formed between a main axis of the lens and a tangent line of a point of the curved centermost surface is A, and an acute angle formed between a straight line linking the center of the base to the point of the curved centermost surface and the main axis of the lens is A, the lens satisfies the equation: A+A&#x3c;90+sin(1/n).

A backlight assembly and a display device having the backlight assembly are provided where the backlight assembly includes a plurality of light sources for emitting light and a plurality of metal core printed circuit boards on which the light sources are mounted. The metal core printed circuit boards are directly connected to each other in predetermined regions to emit light in a surface direction. A method of assembling the backlight assembly is further provided.

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Seoul, South Korea

Sang-Gil Lee