Samsung Electronics Co., Ltd.

Samsung Display Co., Ltd.

Ju-Young Yoon

Gi-Cherl Kim

Sang-Yu Lee

Chun-Ho Song

Se-Ki Park

Sang-Gil Lee

Seok-Hyun Nam

Jong-Seo Lee

Seock-Hwan Kang

Seong-Yong Hwang

Byung-Choon Yang

Hyun-jin Kim

Hyoung-Joo Kim

Jin-Hee Park

Sung-Chul Kang

Hyeong-Suk Yoo

Jae-Joong Kwon

Hee-Kwang Song

Ho-Sik Shin

Sang-Il Park

Joo-Young Kim

Yong-Woo Lee

In-Sun Hwang

Joo-Woan Cho

Hyun-Jin Kim

Weon-Sik Oh

Eun-Jeong Kang

Seok-Won Kang

Sung-Lak Choi

Moon-Hwan Chang

Hye-Eun Park

Alexander Fedorovich Shirankov

Alexey Mikhailovich Khorokhorov

Han-Moe Cha

Chang-Ju Kim

Jin-Suk Lee

Won-Gu Cho

Vadim Viktorovich Pozdnyakov

Sung-Kyu Shim

Jin-ha Kim

Jin Wook Seo

Seung-Hwa Ha

Dong-Min Yeo

Byung-Seo Yoon

Chi-O Cho

Tae-Seok Jang

Sang-chul Byun

Sang-Hyuk Lee

Su-Chang Ryu

Kyu-Jung Kim

Jung-Kyun Kim

Kyung-Mo Jung

Dong-Jin Hyun

Gl-Cherl Kim

Dong-Yeon Kang

Seoek-Hwan Kang

Ji-Eun Nam

Maxim Evgein'evich Frolov

Cheol-Yong Jeong

Ki-Hyeon Bae

Maxim Evgein'evich Erolov

Park Se-Ki

Wearable chair

A light source assembly includes a base substrate, a resin layer disposed on the base substrate, and exposing a portion of the base substrate, and a first light source disposed on the portion of the base substrate which is exposed by the resin layer. The first light source has a hexahedron shape. The first light source has a face in parallel with the base substrate and having a height smaller than length or width of the face.

Light source assembly including hexahedron-shaped light source, display apparatus including the same, and method of manufacturing 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 first light source unit including n light emitting members; and a light guide plate including a first side adjacent to the first light source unit, and a first groove adjacent to a first end of the first side.

Light guide plate and backlight assembly including the same

A display device and a method of driving the same are provided according to one or more embodiments. According to an embodiment, the display device includes a display panel including a plurality of display blocks arranged in the form of a matrix; a plurality of lighting blocks emitting light to the display panel, each of the lighting blocks arranged so as to correspond to at least one row of the matrix and having adjustable light luminance; and a signal control unit adapted to receive an image signal, determine display block luminance of the respective display blocks when an image is displayed on the respective display blocks in accordance with the image signal, determine the light luminance of the respective lighting blocks by using the display block luminance of some display blocks corresponding to the respective lighting blocks, correct the image signal by using the light luminance and the display block luminance, and provide the corrected image signal to the display panel.

Display device and method of driving the same

A liquid crystal display includes: a signal controller which converts a first image signal having a first gray level based on an original gamma coefficient into a second image signal having a second gray level based on a target gamma coefficient; a liquid crystal panel connected to the signal controller and which displays an image based on the second image signal; and a light-emitting unit connected to the signal controller and which provides light to the liquid crystal panel. The target gamma coefficient is less than or equal to the original gamma coefficient, and a luminance of the light provided by the light-emitting unit is adjusted by the signal controller to minimize an amount of luminance distortion of the image.

Liquid crystal display and method of driving the same

A light-emitting module includes a light guide plate and a light source unit in accordance with an embodiment. The light guide plate include an upper surface, a lower surface facing the upper surface, a plurality of side surfaces connecting the upper surface and the lower surface, and a cross-sectional surface connected to at least one of the side surfaces. The light source unit includes a substrate disposed in correspondence with the cross-sectional surface and a point light source mounted on the substrate to emit light to the cross-sectional surface. Thus, light-emitting efficiency may be enhanced and the arrangement of point light sources may be optimized, so that a required amount of emitted light may be obtained using a small number of the point light sources. In addition, uniformity of luminance and heat-radiating efficiency may also be enhanced.

Light-emitting module and display device having the same

A light source module includes a receiving container, a first light source, a second light source, a first resin, and a second resin. The receiving container includes an upper surface, a first bottom surface, and a second bottom surface. The first bottom surface has a first depth from the upper surface. The second bottom surface has a second depth from the upper surface. The first light source is disposed on the first bottom surface. The first light source generates first color light. The second light source is disposed on the second bottom surface. The second light source generates second color light. The first resin is formed on the first light source. The first resin includes a phosphor emitting third color light. The second resin is formed on the first resin and the second light source.

Light source module and method of manufacturing the same

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).

A backlight assembly includes a light guiding plate, a driving board, a light emitting chip and a flexible board. The light guiding plate has a plate shape. The driving board is disposed substantially parallel with a side surface of the light guiding plate to face the side surface of the light guiding plate. The light emitting chip is formed on a surface of the driving board to generate light toward the side surface of the light guiding plate. The flexible board has a connection wiring that provides a power source to the driving board. The driving board is disposed on the flexible board.

Backlight assembly and display device having the same

A backlight unit includes a mold frame, a metal core printed circuit board ('MCPCB') on which at least one light emitting diode ('LED') is mounted, a reflector, a light guide plate, and an optical sheet. The mold frame includes an MCPCB fixing portion, the MCPCB is directly and removably disposed on the MCPCB fixing portion, and a lower surface of the MCPCB is exposed to the outside of the mold frame. On the MCPCB, a reflector, a light guide plate, and an optical sheet are placed in the order named. The light guide plate has a light entering surface facing the LED.

Backlight unit having fixed and removable metal core printed circuit board and liquid crystal display module having the same

A two-dimensional light source includes a base substrate having holes, wires disposed on a lower surface of the base substrate, a light emitting diode (LED) chip disposed on an upper surface of the base substrate, plugs that connect two electrodes of the LED chip to the wires through the holes, a buffer layer covering the LED chip, and an optical layer that is disposed on the buffer layer and has an optical pattern formed at a portion of the optical layer corresponding to the LED chip.

Two dimensional light source using light emitting diode and liquid crystal display device using the two dimensional light source

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

An optical lens refracts and reflects a light to increase a luminance in a top direction of the optical lens and to decrease a luminance in a horizontal direction of the optical lens. The optical lens includes a central portion and a peripheral portion. The central portion has a convex shape. The peripheral portion has a concave shape. The peripheral portion surrounds the central portion. Therefore, power consumption and manufacturing cost are decreased.

Optical lens, optical package having the same, backlight assembly having the same and display device having 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

Growing community of inventors

Suwon-si, South Korea

Ju-Young Yoon