With Plural Diverse Light Sources (e.g., For Day And Night) Patents (Class 349/68)
  • Patent number: 10854840
    Abstract: A window member includes a base substrate including a bottom surface, an upper surface opposed to the bottom surface, and a connecting surface between the bottom surface and the upper surface, and a blocking layer on the connecting surface, the blocking layer including an ultraviolet absorber.
    Type: Grant
    Filed: November 22, 2016
    Date of Patent: December 1, 2020
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Youngkwan Kim, Junghwan Kim, Sangeun Moon, Miso Park, Jungpyo Hong
  • Patent number: 10685594
    Abstract: A method and system for calibrating brightness variation in a display involve measuring brightness levels of light emitters in the display. The light emitters are divided into different groups based on the measured brightness levels. Each group is assigned a sub-frame duration. Groups with higher brightness are assigned shorter sub-frame durations than groups with lower brightness. Calibration information is stored for driving the light emitters such that during a frame period of the display, the light emitters are activated for durations corresponding to the sub-frame duration of their corresponding group.
    Type: Grant
    Filed: August 8, 2018
    Date of Patent: June 16, 2020
    Assignee: FACEBOOK TECHNOLOGIES, LLC
    Inventors: William Padraic Henry, Ilias Pappas
  • Patent number: 10665180
    Abstract: An electronic display comprises a backlight unit and a liquid crystal (LC) layer, wherein the backlight combines and directs light from a plurality of light sources towards the LC layer, which controls an amount of light to be displayed. The light sources comprise at least two different types of light sources associated with different wavelength ranges, to provide improved spectrum intensity for a wider range of wavelengths. The intensity of the light sources may be adjusted based upon the input data for an image to be displayed. For example, the light sources may be dimmed based upon a determined amount of the received image data associated with a particular gray level.
    Type: Grant
    Filed: July 26, 2019
    Date of Patent: May 26, 2020
    Assignee: Facebook Technologies, LLC
    Inventors: Jianru Shi, Fenglin Peng
  • Patent number: 10306729
    Abstract: An electronic device may be provided with a display having a backlight with light sources of different colors. The electronic device may include a color ambient light sensor that measures the color of ambient light and control circuitry that adjusts the color of light emitted from the backlight based on the color of ambient light. The light sources may include at least first and second light-emitting diodes that emit light having different color temperatures. The control circuitry may adjust the intensity of light emitted from the first light-emitting diode relative to the intensity of light emitted from the second light-emitting diode to produce a backlight color that more closely matches the color of ambient light. The first and second light-emitting diodes may include an ultraviolet light-emitting diode die and a blue light-emitting diode die that are mounted in a common semiconductor package.
    Type: Grant
    Filed: October 25, 2016
    Date of Patent: May 28, 2019
    Assignee: Apple Inc.
    Inventors: Cheng Chen, Jiaying Wu, Lu Zhang, David A. Doyle, Christopher E. Glazowski, Adria Fores Herranz, Chenhua You, Wei Chen, Jun Qi, John Z. Zhong
  • Patent number: 10235970
    Abstract: An electronic device includes a display including an emission unit, a light sensor configured to generate a signal indicative of ambient light level, a memory in which filtering instructions and emission control instructions are stored, and a processor configured to implement the filtering instructions to generate at least one filtered representation of the ambient light level in accordance with the signal. The processor is further configured to implement the emission control instructions to determine whether the ambient light level is increasing or decreasing, and to generate a control signal that, based on the at least one filtered representation, increases a brightness level of the emission unit at a first rate if the ambient light level is increasing and that decreases the brightness level at a second rate if the ambient light level is decreasing. The first rate is greater than the second rate.
    Type: Grant
    Filed: May 12, 2017
    Date of Patent: March 19, 2019
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Jon Breazile, Ricardo Lopez-Barquilla, Yi-Min Huang
  • Patent number: 10115768
    Abstract: A light emitting device includes a first light emitting element, a second light emitting element, a third light emitting element, a fluorescent material, a film, a first lens, a second lens, and a third lens. The first light emitting element is to emit a first light having a peak wavelength in a range from 440 nm to 485 nm. The second light emitting element is to emit a second light having a peak wavelength in a range from 495 nm to 573 nm. The third light emitting element is configured to emit from a third front surface a third light having a peak wavelength in a range from 440 nm to 485 nm. The fluorescent material is provided on the third front surface and has a fluorescent side surface extending along a front-rear direction. The film is provided to surround the side surface and the fluorescent side surface.
    Type: Grant
    Filed: July 25, 2017
    Date of Patent: October 30, 2018
    Assignee: NICHIA CORPORATION
    Inventors: Masaki Hayashi, Tomohisa Kishimoto
  • Patent number: 9934731
    Abstract: A multiple backlight display system includes a display device having a light guide device including a plurality of edges. An edge backlight device is located along one of the edges of the light guide device. An array backlight device includes a plurality of array backlight zones that are located between the edges of the light guide device. A computing device receives an image for display on the display device and determines a plurality of brightness zones in the image. The computing device then generates backlight driving information using the plurality of brightness zones and provides the backlight driving information to the display device. The backlight driving information is configured to drive the array backlight device such a first array backlight zone provides light having a first brightness that is different than a second brightness of light that is provided by at least one second array backlight zone.
    Type: Grant
    Filed: November 25, 2015
    Date of Patent: April 3, 2018
    Assignee: Dell Products L.P.
    Inventor: Stefan Peana
  • Patent number: 9856702
    Abstract: A cutting element for a cutting tool. The cutting element may be at least partially made from a composite material including a carbide material, a binder material, and a plurality of diamond particles. The carbide material may be from 55 wt % to 97 wt % of a total weight of the composite material. The binder material may be from 3 wt % to 20 wt % of the total weight of the composite material. The plurality of diamond particles may be from 0.1% to 25% of the total weight of the composite material. The carbide material and the binder material may be combined and sintered together prior to being combined with the plurality of diamond particles, such that the carbide material and the binder material form a plurality of pellets having an average cross-sectional length from 10 ?m to 250 ?m.
    Type: Grant
    Filed: September 16, 2014
    Date of Patent: January 2, 2018
    Assignee: SMITH INTERNATIONAL, INC.
    Inventors: Sike Xia, Xin Deng
  • Patent number: 9817167
    Abstract: A protective film for a polarizing plate includes a base film and a primer layer on one or both sides of the base film. The protective film has a transmittance of about 90% or greater at a wavelength of 550 nm, and a ratio of the refractive index (B) of the primer layer to the refractive index (A) of the base film of about 0.6 to about 1.0. The protective film exhibits good adhesiveness to the polarizer and improves the transmittance of the polarizing plate. A polarizing plate including the same, and a liquid crystal display including the same are also disclosed.
    Type: Grant
    Filed: March 26, 2014
    Date of Patent: November 14, 2017
    Assignee: SAMSUNG SDI CO., LTD.
    Inventors: Kwang Ho Shin, Eun Su Park, Dong Yoon Shin, Hae Ryong Chung
  • Patent number: 9679534
    Abstract: An electronic device includes a display including an emission unit, a light sensor configured to generate a signal indicative of ambient light level, a memory in which filtering instructions and emission control instructions are stored, and a processor configured to implement the filtering instructions to generate at least one filtered representation of the ambient light level in accordance with the signal. The processor is further configured to implement the emission control instructions to determine whether the ambient light level is increasing or decreasing, and to generate a control signal that, based on the at least one filtered representation, increases a brightness level of the emission unit at a first rate if the ambient light level is increasing and that decreases the brightness level at a second rate if the ambient light level is decreasing. The first rate is greater than the second rate.
    Type: Grant
    Filed: February 13, 2015
    Date of Patent: June 13, 2017
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Jon Breazile, Ricardo Lopez-Barquilla, Yi-Min Huang
  • Patent number: 9666141
    Abstract: A display apparatus includes a display panel including a first subpixel having a first primary color, a second subpixel having a second primary color; and a transparent subpixel; a panel driver which sets grayscale data of the first subpixel, the second subpixel and the transparent subpixel; a light source part which provides light to the display panel, where the light source comprises a first light source and a second light source having colors different from each other; and a light source driver which turns on the first light source during a first subframe, turns on the second light source during a second subframe, and turns on the first light source during a third subframe, and a first frame comprises the first subframe, the second subframe and the third subframe.
    Type: Grant
    Filed: May 7, 2013
    Date of Patent: May 30, 2017
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jae Byung Park, Seon-Tae Yoon, Jae-Woong Kang, Hae-Il Park, Sung-Tae Shin, Mun-Ki Sim, Kwang-Keun Lee, Hyun-Min Cho
  • Patent number: 9529229
    Abstract: A backlight unit includes a substrate, a plurality of first light sources, a plurality of second light sources, a first wiring portion, a second wiring portion, a first connector and a second connector. The first light sources are disposed on the substrate. The second light sources are disposed on the substrate in a single line. The first wiring portion extends along a length direction on a first peripheral area of the substrate and is connected to the first light sources. The second wiring portion extends along the length direction on a second peripheral area of the substrate and is connected to the second light sources. The first connector is disposed on a first end portion of the substrate and is electrically connected to the first wiring portion. The second connector is disposed on a second end portion of the substrate and is electrically connected to the second wiring portion.
    Type: Grant
    Filed: August 29, 2013
    Date of Patent: December 27, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jeong-Ki Kim, Jin-Soo Shin
  • Patent number: 9519168
    Abstract: A display apparatus is provided. The display apparatus includes a display panel which displays an image; a top chassis and a bottom chassis which house the display panel; and a plurality of light-emitting boards which are installed on an inner surface of the bottom chassis, each of the light-emitting boards including a main printed circuit board (PCB) that extends in a longitudinal direction and light source packages installed on the main PCB, and the light source packages are arranged to be farther from a first longitudinal edge of the main PCB than a second longitudinal edge of the main PCB.
    Type: Grant
    Filed: April 24, 2013
    Date of Patent: December 13, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Suk-ju Choi, Kye-hoon Lee, Yong-hun Kwon, Young-min Lee, Kun-ho Cho, Gil-tae Hur
  • Patent number: 9520093
    Abstract: The disclosure relates to a driving method of liquid crystal display panel. The liquid crystal display panel comprises a plurality of display units, the display unit comprises two adjacent pixel units. Wherein the driving method comprises: receiving input video data; determining that whether the input video data are within a plurality of video data intervals of predetermined complexion frame; if the input video data is within a certain video data intervals of predetermined complexion frame, then obtain high video data and low video data according to the input video data; providing the high video data to one of the pixel units, and providing the low video data to the other pixel units. The disclosure also relates to a liquid crystal display panel driven by the driving method.
    Type: Grant
    Filed: January 20, 2015
    Date of Patent: December 13, 2016
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
    Inventor: Lixuan Chen
  • Patent number: 9467668
    Abstract: Scanning beam display systems that scan one servo beam and an excitation beam onto a screen that emits visible light under excitation of the light of the excitation beam and control optical alignment of the excitation beam based on positioning of the servo beam on the screen via a feedback control.
    Type: Grant
    Filed: January 7, 2016
    Date of Patent: October 11, 2016
    Assignee: Prysm, Inc.
    Inventor: Roger A. Hajjar
  • Patent number: 9411202
    Abstract: A liquid crystal display device less influenced by static electricity comprises a liquid crystal display element which forms a display part having inner surfaces of a pair of insulating substrates provided with transparent electrodes; a circuit substrate conductively connected to the liquid crystal display element via a lead terminals; and a conductive part formed to surround the transparent electrode. The conductive part is provided on the insulating substrate so as to avoid the positions where the lead terminals are arranged. Further included are a display panel through which the display part is visible; a first earth terminal conductively connected a first conductive pattern of the conductive part and in contact with the display panel; and a second earth terminal of which is conductively connected to a seventh conductive pattern of the conductive part to a grounding part.
    Type: Grant
    Filed: January 12, 2012
    Date of Patent: August 9, 2016
    Assignee: NIPPON SEIKI CO., LTD.
    Inventor: Bunkichi Kaneko
  • Patent number: 9354735
    Abstract: A light sensitive display.
    Type: Grant
    Filed: October 26, 2007
    Date of Patent: May 31, 2016
    Assignee: Apple Inc.
    Inventors: Adiel Abileah, Willem den Boer, Pat Green
  • Patent number: 9349325
    Abstract: It is an object to provide a transmissive liquid crystal display device in which power consumption is reduced and deterioration in display quality is suppressed. As a backlight, a surface-emission light source is employed. The light source is a light source which performs surface light emission, so that the light emission area is large. Accordingly, the backlight can effectively radiate heat. Thus, even in the case where an image signal is not input to a pixel for a long period, the pixel can hold the image signal. In other words, both a reduction in power consumption and a suppression of deterioration in display quality can be realized.
    Type: Grant
    Filed: April 25, 2011
    Date of Patent: May 24, 2016
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Jun Koyama
  • Patent number: 9280935
    Abstract: A mobile image display apparatus comprising a backlit display device, an ambient light collector, an image forming device for outputting image signals to form images on an image display screen of the backlit display device, and an image viewing chamber defined by an opaque housing; wherein the ambient light collector is for collecting ambient light from exterior surroundings to provide back illumination to the backlit display device.
    Type: Grant
    Filed: January 3, 2012
    Date of Patent: March 8, 2016
    Assignee: Dayton Technologies Ltd.
    Inventor: Paul Anthony Yuen
  • Patent number: 9224323
    Abstract: Dual modulation display systems comprising a first modulation layer and a second modulation layer are disclosed, such that the first modulation layer and the second modulation layer are offset by a desired distance. In one embodiment, the offset distance may be an actual spatial offset distance in one, two or a preferred direction. In another embodiment, the offset distance may be a rotational offset between the two layers. In yet another embodiment, the offset may be a temporal offset between the images appearing on the first modulation layer and the second modulation layer. In yet another embodiment, the offset may be a combination of spatial, rotational and/or temporal offsets. The display system may comprise a controller capable of mapping input image data onto the first and second modulation layers via intermediate signals and the intermediate signals may be some function of the offset.
    Type: Grant
    Filed: April 28, 2014
    Date of Patent: December 29, 2015
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Ning Xu, Gopal Erinjippurath
  • Patent number: 9195346
    Abstract: A touch panel includes a light guide plate, a light emitting device, a light sensing module, and a controller. The light guide plate has a touch plane. The light emitting device applies an incident light to the light guide plate, and at least a portion of the incident light is completely reflected in the light guide plate. When an object touches the touch plane, a total internal reflection of at least a portion of the incident light at a touch point is frustrated. The light sensing module detects a wavelength of an ambient light. The controller controls the light emitting device according to the ambient light wavelength detected by the light sensing module to adjust an incident light wavelength of the incident light emitted by the light emitting device so that the incident light wavelength differs from the ambient light wavelength.
    Type: Grant
    Filed: December 17, 2013
    Date of Patent: November 24, 2015
    Assignee: WISTRON CORPORATION
    Inventor: Tung-Ming Wu
  • Patent number: 9190004
    Abstract: An LCD device is disclosed which includes: at least one sensor module configured to sense an amount of external light; a liquid crystal display panel configured to display images; at least one light source module disposed under the liquid crystal display panel and configured to emit light; and at least one light guide plate configured to convert light from the at least one light source module into two-dimensional light and apply two-dimensional light to the liquid crystal display panel. The at least one light source module includes infrared LEDs and visible LEDs which are selectively driven according to a sensed light quantity sensed by the at least one sensor module and allow infrared light and visible light to be selectively emitted.
    Type: Grant
    Filed: December 27, 2012
    Date of Patent: November 17, 2015
    Assignee: LG Display Co., Ltd.
    Inventors: Jae Jung Han, Se Min Lee, Joo Young Yeon
  • Patent number: 9134570
    Abstract: There is provided a color-regulating device for illumination. The color-regulating device includes a light-valving structure for adjusting a flux ratio of outgoing light through the light-valving structure to incident light entering the light-valving structure, and a color-adjusting structure having a wavelength-band converting element for changing incident light with a wavelength band into outgoing light with a different wavelength band through the element. Wherein, the light-valving structure and the color-adjusting structure do not overlap on the traveling path of the light emitted from the light source. Mixing the outgoing light of the light source passing through the light-valving structure with the outgoing light of the light source passing through and at least a portion thereof converted by the color-adjusting structure with a different wavelength band yields a color-adjusted light of different color temperature from that of the light source.
    Type: Grant
    Filed: May 24, 2013
    Date of Patent: September 15, 2015
    Assignee: PLANCK CO., LTD.
    Inventors: Chin-Yu Chao, Chiu-Chang Huang, Chieh-Hsiung Kuan, Vin-Cent Su
  • Patent number: 9125248
    Abstract: An intelligent LED drive power has an EMI filter, two AC/DC constant current units, a microcontroller, a switch unit, two state detect circuits and an assistant power. The input and output of the constant current units are alternatively connected to the output of the EMI filter and the LED light source through the switch unit. The inputs of each state detect circuits are separately connected to the output of one of the constant current units. The outputs of each state detect circuit are separately connected to the microcontroller input; the microcontroller output is connected to the switch unit input; the assistant power input is connected to the EMI filter output. The assistant power output is connected to the microcontroller. The switch controls the two AC/DC constant current units by detecting the mains supply input voltage and the AC/DC constant current unit output voltage and current.
    Type: Grant
    Filed: November 15, 2012
    Date of Patent: September 1, 2015
    Assignee: XIAMEN XING HENGLONG LIGHTING TECHNOLOGY CO., LTD.
    Inventor: Huaqing Huang
  • Patent number: 9103949
    Abstract: The present invention provides a direct light backlight module with solar light assistance, which comprises a backboard. The backboard is provided with a waveguide. A light source is disposed under the waveguide. An optical film module is disposed above the waveguide and faces the light emitted from the direct light source. An assisting light source device is provided and which collects solar light and direct it to an optical film module. The present invention further provides a liquid crystal display device with the direct light backlight module with assisting solar light. With the provision of the assisting light source, the solar light can be used as an assisting light source making the backlight module and the liquid crystal display device made therefrom become more environmental friendly.
    Type: Grant
    Filed: November 15, 2012
    Date of Patent: August 11, 2015
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
    Inventors: Che-Chang Hu, Hu He
  • Publication number: 20150130693
    Abstract: A backlight assembly having a light emitting module and a lower receiving container, the light emitting module including a first light source configured to generate a first light and a quantum dot rail configured to generate a second light from the first light the light emitting module is disposed under a display panel to provide the display panel with the second light, and the lower receiving container is configured to receive the light emitting module and the display panel6b
    Type: Application
    Filed: June 24, 2014
    Publication date: May 14, 2015
    Inventors: Hyun-Min Cho, Kwang-Keun Lee, Jong-Hyuk Kang, Jae-Byung Park, Baek-Hee Lee
  • Patent number: 9019445
    Abstract: Uneven brightness is less likely to occur in lighting devices at low cost. A backlight unit 12 includes LEDs 17, a chassis 14 having a bottom plate 14a and housing the LEDs 17, and an LED drive controller 24 controlling drive of the LEDs 17. The LEDs 17 are arranged in a matrix in row and column directions (X-axis direction and Y-axis direction) along the bottom plate 14a, forming respective LED groups 25 each along the row direction. The LED groups 25 include a middle LED group 28 and an end side LED group 29. The middle LED group 28 is located in a middle portion of the bottom plate 14a in the column direction group and the end side LED group 29 is located closer to an end of the bottom part from the middle portion group. The LED drive controller 24 controls light of at least one of the middle LED group 28 and the end side LED group 29 such that the end side LED group 29 has relatively high brightness and the middle LED group 28 has relatively low brightness.
    Type: Grant
    Filed: November 17, 2010
    Date of Patent: April 28, 2015
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Takaharu Shimizu, Mamoru Takaya
  • Patent number: 9019448
    Abstract: A display apparatus includes a light guide plate to emit light that enters through a side surface of the light guide plate through an upper surface of the light guide plate, a light source arranged on at least one side of the light guide plate, a reflection plate arranged under the light guide plate, a color filter layer arranged above the light guide plate, and an optical shutter arranged above the color filter layer to transmit or block at least a part of light according to electric control, wherein the color filter layer includes a transmission type color filter to transmit light in a particular wavelength band and reflect light in other wavelength bands.
    Type: Grant
    Filed: January 28, 2011
    Date of Patent: April 28, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Moon-gyu Han, Hong-seok Lee, Chang-gyun Shin
  • Publication number: 20150109560
    Abstract: A liquid crystal display (LCD) and a display device are disclosed. The LCD is provided with a plurality of pixel units; each pixel unit includes a plurality of sub-pixel units for displaying different colors; quantum dot (QD) layers capable of allowing backlight to run through are disposed at positions of an array substrate, corresponding to the sub-pixel units of at least one color of the pixel units; the QD layers are excited by ultraviolet light in sunlight and emit light which at least is of the color of the sub-pixel units; and color filters are disposed between the QD layers and the opposing substrate. The LCD has enhanced display brightness and higher outdoor viewability in the case of outdoor display.
    Type: Application
    Filed: October 10, 2013
    Publication date: April 23, 2015
    Inventors: Renwei Guo, Xue Dong, Jian Guo
  • Publication number: 20150015828
    Abstract: A transflective image display apparatus includes a transmissive polarizing plate; a color filter disposed below the transmissive polarizing plate and including a white color filter and at least two of a red color filter, a green color filter, and a blue color filter; a liquid crystal display panel disposed below the color filter; an electrical polarization control unit disposed below the liquid crystal display panel; a reflective polarizing plate disposed below the electrical polarization control unit; a backlight unit disposed below the reflective polarizing plate and including a white light source and a light source configured to emit light corresponding to at least one of the red color filter, the green color filter, and the blue color filter; and a controller configured to control the liquid crystal display panel, the electrical polarization control unit, and the backlight unit periodically in at least two states according to a predetermined condition.
    Type: Application
    Filed: January 30, 2014
    Publication date: January 15, 2015
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Dae-sik KIM, Seong-woo CHO, Sergey SHESTAK, Jong-hoon JUNG
  • Patent number: 8934064
    Abstract: A three-dimensional display apparatus, including a backlight module, two panels, and a synchronization device, is provided. The backlight module has a light emitting side and sequentially emits a plurality of color light. Both panels are disposed at the light emitting side, and the first panel is disposed between the backlight module and the second panel. The first panel includes a first polarizer and a first liquid crystal substrate, and the first polarizer is disposed between the backlight module and the first liquid crystal substrate. The second panel includes a second liquid crystal substrate and a second polarizer, and the second liquid crystal substrate is disposed between the second polarizer and the first panel. The synchronization device is electrically connected to the backlight module and the two liquid crystal substrates. During a frame time, the backlight module and the two liquid crystal substrates are synchronously driven by the synchronization device.
    Type: Grant
    Filed: November 26, 2012
    Date of Patent: January 13, 2015
    Assignee: Chunghwa Picture Tubes, Ltd.
    Inventors: Wen-Chih Tai, Shian-Jun Chiou, Chia-Lin Liu, Chi-Neng Mo
  • Patent number: 8902378
    Abstract: In a liquid crystal display (LCD) device, an LED PCB with the reflection layer formed on surface thereof is installed at an upper side of the LED array and a reflection plate extends such that it sufficiently covers the lower portion of the LED array to thus make light emitted from the light source incident to its maximum level, thus coping with the reduction in the quantity of light resulting from making the LCD device thinner. The LCD device includes: a liquid crystal panel; an LED array supplying light to the liquid crystal panel; a light guide plate installed in a direction in which the LED outputs light, and guiding light; a reflection plate formed between the LED array and a lower portion of a lower cover; and an LED PCB attached to an upper portion of the lower cover at an upper side of the LED array and having a reflection layer formed at a side facing the light guide plate.
    Type: Grant
    Filed: July 9, 2010
    Date of Patent: December 2, 2014
    Assignee: LG Display Co., Ltd.
    Inventors: Sang-Hyun Lee, Won-Taek Moon, Yong-Ik Hwang
  • Patent number: 8885120
    Abstract: A color Liquid Crystal display (LCD) device for displaying a color image using at least four different primary colors, the device including an array of Liquid Crystal (LC) elements, driving circuitry adapted to receive an input corresponding to the color image and to selectively activate the LC elements of the LC array to produce an attenuation pattern corresponding to a gray-level representation of the color image, and an array of color sub-pixel filter elements juxtaposed and in registry with the array of LC elements such that each color sub-pixel filter element is in registry with one of the LC elements, wherein the array of color sub-pixel filter elements comprises at least four types of color sub-pixel filter elements, which transmit light of the at least four primary colors, respectively.
    Type: Grant
    Filed: April 15, 2008
    Date of Patent: November 11, 2014
    Assignee: Genoa Color Technologies Ltd.
    Inventors: Ilan Ben-David, Shmuel Roth, Moshe Ben-Chorin
  • Patent number: 8866991
    Abstract: A tiled display device includes a plurality of display devices defining an image display part, the image display part divided into a central portion and an outer edge portion, a support frame tiling the plurality of display devices side by side, and a plurality of light guides, each light guide disposed on each of the display devices, wherein the brightness of an image displayed at the outer edge portion is higher than that of an image disposed at the central portion.
    Type: Grant
    Filed: January 26, 2010
    Date of Patent: October 21, 2014
    Assignee: LG Display Co., Ltd.
    Inventors: Hyun Suk Jin, Min Joo Kim
  • Publication number: 20140300846
    Abstract: A display system, having an emissive body, emitting light in a way that is color temperature controllable. The light emission can be from zones. The emissive body can be a FIPEL type device with a first transparent conductive coating over a light emitting substrate. The zones are each separately controllable for color temperature.
    Type: Application
    Filed: April 9, 2013
    Publication date: October 9, 2014
    Applicant: VIZIO INC.
    Inventor: Matthew McRae
  • Patent number: 8850714
    Abstract: A chromaticity correction device corrects chromaticity of a video signal displayed on a display panel of a display device to correspond to a change in a luminance value of the display panel. The chromaticity correction device includes a luminance detection unit which detects the luminance value, a backlight driving level detection unit which detects a backlight driving level, a temperature detection unit which detects an internal device temperature or an ambient temperature, a reference luminance value calculation unit which estimates a reference luminance value in a characteristic of an initial state, a chromaticity calculation unit which obtains a chromaticity change amount of white point chromaticity and estimated white point chromaticity that is an estimated value of current white point chromaticity, a chromaticity correction value calculation unit which obtains a chromaticity correction value and a chromaticity correction circuit which corrects the chromaticity of the video signal.
    Type: Grant
    Filed: September 30, 2011
    Date of Patent: October 7, 2014
    Assignee: NEC Display Solutions, Ltd.
    Inventor: Katsuyuki Matsui
  • Patent number: 8847877
    Abstract: An outdoor readable liquid crystal display device (200) includes a liquid crystal panel (210), a backlight device (220) and a light source control device. The backlight device (220) includes a plurality of red light emitting diodes (220r), green light emitting diodes (220g) and blue light emitting diodes (220b). The light source control device is used to adjust the backlight device (220) based on the light intensity of ambient light. When the light intensity of ambient light is lower than a predetermined light intensity of the liquid crystal display device (200), the red light emitting diodes (220r), the green light emitting diodes (220g) and the blue light emitting diodes (220b) of the backlight device (220) are sequentially energized to emit lights at a predetermined time lag.
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: September 30, 2014
    Assignee: Shanghai Tianma Micro-Electronics Co., Ltd.
    Inventors: Willem Den Boer, Xuhui Peng, Zhihua Ling, Zhongshou Huang
  • Patent number: 8836893
    Abstract: A light emitting device array includes a substrate including a first region and a second region that is inclined with respect to the first region, a first light emitting device package arranged on the first region, and a second light emitting device package that is arranged on the second region and is inclined with respect to the first light emitting device package at an inclination angle between 90° and 160°.
    Type: Grant
    Filed: March 15, 2012
    Date of Patent: September 16, 2014
    Assignee: LG Innotek Co., Ltd.
    Inventors: Il Seo, Hongboem Jin, Sangwoo Lee
  • Patent number: 8810750
    Abstract: A backlight unit and a display device including the backlight unit are provided. The backlight unit includes at least one light source unit and a light guide plate. The light source unit provides collimated light and controls light such that it is emitted in a plurality of light exit directions.
    Type: Grant
    Filed: July 8, 2011
    Date of Patent: August 19, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yong-kweun Mun, Yoon-sun Choi, Hong-seok Lee
  • Publication number: 20140226109
    Abstract: A white light emitting diode includes a blue light emitting diode (“LED”) light source, and a light conversion layer which converts incident light from the blue LED light source into white light. The light conversion layer includes a green light emitting semiconductor nanocrystal and a red light emitting semiconductor nanocrystal. The white light emitting diode has a red, green and blue color (“RGB”) color locus which is within a chrominance error range (±4?E*ab±2?E*ab) locus from the constant hue locus of each of sRGB color coordinates, or within a chrominance error range (±4?E*ab±2?E*ab) locus from the constant hue locus of each of AdobeRGB color coordinates.
    Type: Application
    Filed: April 17, 2014
    Publication date: August 14, 2014
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Seoung-Jae IM, Seo-Young CHOI, Eun-Joo JANG
  • Patent number: 8804076
    Abstract: The present invention provides a liquid crystal display device including a liquid crystal panel. The liquid crystal panel has a plurality of pixel regions, and the liquid crystal panel includes a first substrate, a second substrate, a liquid crystal layer, and a light-absorbing layer. The second substrate and the first substrate are disposed opposite to each other, and the liquid crystal layer is disposed between the first substrate and the second substrate. The light-absorbing layer is disposed between the first substrate and the second substrate in the pixel regions, and the light-absorbing layer is configured to absorb a light having a wavelength within a range between 380 nm and 560 nm.
    Type: Grant
    Filed: June 26, 2012
    Date of Patent: August 12, 2014
    Assignee: HannStar Display Corp.
    Inventors: Chih-Pin Lin, Chao-Hui Wu
  • Patent number: 8794780
    Abstract: A backlight device 12 includes cold cathode tubes 17, a chassis that houses the cold cathode tubes 17 therein and having an opening 14b through which light emitted from the cold cathode tubes exits, and a diffuser plate 15 provided so as to face the cold cathode tubes 17 and cover the opening 14b. A light reflecting portion 30 is formed on a side of the diffuser plate 15 close to the cold cathode tubes 17 so as to have different light reflectance in every surface area of a surface of the diffuser plate 15. A scattering structure 31 is formed on a side of the diffuser plate 15 opposite from the cold cathode tubes 17 and scatters the light.
    Type: Grant
    Filed: October 9, 2009
    Date of Patent: August 5, 2014
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Kaori Ikuta
  • Publication number: 20140211128
    Abstract: A liquid crystal display includes a liquid crystal display panel including pixels and a backlight unit disposed at a rear side of the liquid crystal display panel to supply first and second color lights having different wavelengths to the liquid crystal display panel. In each pixel, first and second color filters having first and second colors different from each other are sequentially arranged in a first direction. Each pixel also includes a first open portion allowing the first and second color filters to be spaced apart from each other in the first direction and a second open portion allowing the second color filter to be spaced apart from a color filter of an adjacent pixel in the first direction. The backlight unit supplies the first and second color lights to the liquid crystal display panel during first and second sub-fields obtained by dividing a frame.
    Type: Application
    Filed: June 4, 2013
    Publication date: July 31, 2014
    Inventors: Seung-Suk YANG, Sangyeoul LIM, Yongchan JEON, Young-Min JUNG, Kwangjae KIM
  • Patent number: 8786805
    Abstract: A backlight unit according to embodiment comprise of a frame, a light emitting device module disposed on a side of the frame and a plurality of light guide members disposed in the direction of the light irradiated from the light emitting device, wherein the light guide members have light transmissivity and reflectivity different from each other.
    Type: Grant
    Filed: March 14, 2012
    Date of Patent: July 22, 2014
    Assignee: LG Innotek Co., Ltd.
    Inventor: Doohee Kim
  • Patent number: 8770822
    Abstract: The utility model relates to a technology field of liquid crystal display, and more particularly to a backlight module and a backlight device. The backlight module provided by the utility model comprises a light guide plate, a printed circuit board, a heat-dissipating bracket and a first retaining member. There has an optical-coupling distance between a light incidence surface of the light guide plate and the printed circuit board. The light incidence surface of the light guide plate disposes more than two light guide plate protrusions thereon. The first retaining member retains the heat-dissipating bracket, the printed circuit board and the light guide plate together to form an independent module. The technical solution of the utility model can enhance the stability of the optical-coupling distance in the backlight module, realize a simple modularization assembly, simplify a mounting process of the back plate, and improve the assembly convenience.
    Type: Grant
    Filed: September 19, 2011
    Date of Patent: July 8, 2014
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventors: Chengwen Que, Yicheng Kuo
  • Patent number: 8773336
    Abstract: Illumination devices and related systems and methods are closed that can be used for LCD (Liquid Crystal Display) backlights, LED lamps, or other applications. The illumination devices can include a photo detector, such as a photodiode or an LED or other light detecting device, and one or more LEDs of different colors. A related method can be implemented using these illumination devices to maintain precise color produced by the blended emissions from such LEDs. One application for the illumination devices is backlighting for FSC (Field Sequential Color) LCDs (Liquid Crystal Displays). FSC LCDs temporally mix the colors in an image by sequentially loading the red, green, and blue pixel data of an image in the panel and flashing the different colors of an RGB backlight. Precise and uniform color temperature across such a display can be advantageously maintained by continually monitoring ratios of photodiode currents induced by the different colored LEDs in each illumination device as each color is flashed.
    Type: Grant
    Filed: August 5, 2010
    Date of Patent: July 8, 2014
    Assignee: Ketra, Inc.
    Inventor: David J. Knapp
  • Patent number: 8767143
    Abstract: A backlight unit and a liquid crystal display having the same. The backlight unit includes a lower cover, an interconnection coupling hole, an inverter board, and an interconnection. The lower cover accommodates a printed circuit board, which mounts at least one light emitting diode thereon and is provided at one side thereof with a first connector. The interconnection coupling hole is formed in a bottom surface of the lower cover at a position corresponding to the first connector. The inverter board is disposed on a rear surface of the lower cover to apply a driving voltage to the at least one light emitting diode. The interconnection is provided at one end thereof with a second connector to electrically connect the printed circuit board to the inverter board.
    Type: Grant
    Filed: December 8, 2009
    Date of Patent: July 1, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Sung Soo Jung
  • Patent number: 8760370
    Abstract: A lighting system including a plurality of luminaires capable of generating polychromatic light having a dominant wavelength in the visible spectrum and arranged into an array and a computerized device electrically coupled to the plurality of luminaires so as to selectively operate each individual luminaire to produce source light varying with each other and with time. The computerized device operates the luminaire such that each luminaire emits a source light, the source lights combining to form a combined light having selected characteristics. The source lights, when perceived directly, recreate a lighting scenario having varying lighting characteristics.
    Type: Grant
    Filed: December 10, 2012
    Date of Patent: June 24, 2014
    Assignee: Lighting Science Group Corporation
    Inventors: Fredric S. Maxik, David E. Bartine, Robert R. Soler, Addy S. Widjaja, Matthew Regan, Eliza Katar Grove
  • Patent number: 8754832
    Abstract: A system and method for accenting regions of a layer including a lighting system including a plurality of light sources operable to emit polychromatic light and a layer having two or more regions configured to diffusively scatter light within a wavelength range while absorbing light not within the wavelength range. The regions may be configured to represent recognizable characters or images, and may form a sequence. The lighting system may highlight the regions individually or simultaneously. The layer may be attachable to a surface and may further include non-highlighted regions. The system may also include appliqués applied to a surface and a cover layer transparent to certain wavelengths of light that the appliqués scatter.
    Type: Grant
    Filed: January 30, 2013
    Date of Patent: June 17, 2014
    Assignee: Lighting Science Group Corporation
    Inventors: Fredric S. Maxik, David E. Bartine, Robert R. Soler, Mark Andrew Oostdyk, Addy S. Widjaja, Matthew Regan
  • Patent number: RE45229
    Abstract: A backlight for a color liquid crystal display apparatus includes a first light-guide plate; a first incidence part for receiving light of a first primary color in a first area on a first lateral surface of the first light-guide plate; a second incidence part for receiving light of a second primary color light in a second area on a second lateral surface that is opposite to the first lateral surface of the first light-guide plate; and a third incidence part for receiving light of a third primary color in a third area on a rear surface of the first light-guide plate. The number of superposition steps is thereby reduced, light-guide plates can easily be superposed onto an LCD panel with high accuracy, and a lightweight and inexpensive backlight for a color liquid crystal display apparatus can be obtained.
    Type: Grant
    Filed: November 9, 2011
    Date of Patent: November 4, 2014
    Assignee: Getner Foundation LLC
    Inventor: Mitsuasa Takahashi