With Integral Optical Element For Guiding Or Distributing Light From The Light Source Patents (Class 349/62)
  • Publication number: 20150085220
    Abstract: A display device includes a flexible display panel, a light module and an optical film. The flexible display panel has a first axis and curving about the first axis as an axis of curvature. The light module is located on one side of the flexible display panel. The optical film is located between the flexible display panel and the light module. The optical film includes a substrate and multiple first strip microstructures. The substrate has a first side and a second side that are opposite to each other. The first side faces the light module while the second side faces the flexible display panel. The first strip microstructures are located on the first side of the substrate, and the first strip microstructures extend along a second axis.
    Type: Application
    Filed: January 21, 2014
    Publication date: March 26, 2015
    Applicant: AU Optronics Corp.
    Inventors: Ming-Lung CHEN, Kun-Hung HSIEH
  • Patent number: 8988634
    Abstract: An optical film is provided. According to an embodiment, the optical film may include a base material layer, a first layer disposed on the base material layer and having a first oxide and at least one bead, and a second layer disposed on the first layer and having a second oxide and a mineral pigment.
    Type: Grant
    Filed: October 12, 2011
    Date of Patent: March 24, 2015
    Assignee: LG Electronics Inc.
    Inventors: Weonwoong Lee, Haechon Song
  • Patent number: 8988883
    Abstract: An electro-optic device includes an electro-optic panel, a first holding member that holds the electro-optic panel, and a second holding member provided with a heat emitting portion on the side opposite to a surface to which the electro-optic panel is adhered. In the electro-optic device, a predetermined gap is provided between the first holding member and the second holding member.
    Type: Grant
    Filed: April 5, 2010
    Date of Patent: March 24, 2015
    Assignee: Seiko Epson Corporation
    Inventor: Tomoaki Miyashita
  • Publication number: 20150077644
    Abstract: A display backlight can include a light source and a parabolic waveguide. The parabolic waveguide can have a light inlet to receive the light from the light source, a parabolic reflective surface adapted to change a direction of the light emitted from the light source by a predetermined angle, and a light outlet configured to emit the light at the predetermined angle.
    Type: Application
    Filed: September 16, 2014
    Publication date: March 19, 2015
    Inventors: Rajesh Menon, Arkady Rudnitsky, Zeev Zalevsky
  • Publication number: 20150077683
    Abstract: The present invention provides a liquid crystal display (LCD) panel and a display apparatus using the same. The LCD panel comprises a first substrate, a second substrate, a liquid crystal layer and a half wave (?/2) retarder film. The liquid crystal layer is formed between the first substrate and the second substrate. The second substrate comprises a second electrode, wherein the second electrode comprises a trunk portion and plurality of branch portions, and there is a predetermined angle between the trunk portion and the branch portions, and the predetermined angle is less than or greater than 45 degrees. The ?/2 retarder film is bonded to an outer surface of the first substrate or the second substrate. The present invention can improve the color shift problem and the transmittance of the LCD panel.
    Type: Application
    Filed: May 25, 2012
    Publication date: March 19, 2015
    Applicant: Shenzhen China Optoelectronics Technology Co., Ltd
    Inventor: Chihtsung Kang
  • Publication number: 20150070614
    Abstract: A liquid crystal display panel includes two base substrates disposed spaced apart from each other, a pixel, and at least one polarizer. The liquid crystal display panel includes a transmitting area and a light blocking area disposed adjacent to the transmitting area. The polarizer includes a reflection part overlapped with the light blocking area and a polarization part overlapped with the transmitting area. The polarization part includes lyotropic chromonoic liquid crystal dye molecules aligned in a predetermined direction.
    Type: Application
    Filed: May 13, 2014
    Publication date: March 12, 2015
    Applicant: Samsung Display Co., Ltd.
    Inventors: YOUNGMIN KIM, JAE BYUNG PARK, Mun-Ki SIM, Sumi LEE
  • Patent number: 8976318
    Abstract: A method and system for zonal switching for light steering to produce an image having high dynamic range is described. The system comprises: a light source for providing light along an optical path; a spatial light modulator for directing portions of the light to off-state and on-state light paths, thereby producing an image, the spatial light modulator having a plurality of illumination zones corresponding to the image; and a set of sequentially-arranged optical elements in the optical path for steering at least some of the light from a first subset of the plurality of illumination zones to a second subset of the plurality of illumination zones to increase the dynamic range of the image. The dwell time of the one or more sequentially arranged optical elements can be modified to steer light.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: March 10, 2015
    Assignee: Christie Digital Systems USA Inc.
    Inventor: Simon Guthrie
  • Patent number: 8976316
    Abstract: A lighting device configured to produce light in a substantially uniform overall color includes a plurality of light source boards and a plurality of point light sources. The point light sources are mounted on the light source boards. An average color of the point light sources is in an equivalent color range. The equivalent color range is defined by a square with two sides that are opposed sides each having an X-axis coordinate length of 0.015 and two sides that are opposed sides each having a Y-axis coordinate length of 0.015 in the CIE 1931 color space chromaticity diagram.
    Type: Grant
    Filed: June 4, 2010
    Date of Patent: March 10, 2015
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Hirokazu Mouri
  • Patent number: 8976311
    Abstract: A backlight unit adapted to implement enhanced light efficiency and uniform brightness is disclosed. The backlight unit includes a plurality of light sources arranged at fixed intervals, a diffusion plate disposed on the plurality of light sources, prism patterns formed on one surface of the diffusion plate, and micro-lens patterns formed on the other surface of the diffusion plate. The vertex angle of each prism pattern is in a range of about 64°˜76°.
    Type: Grant
    Filed: December 16, 2009
    Date of Patent: March 10, 2015
    Assignee: LG Display Co. Ltd.
    Inventors: Min Joo Kim, Dong Hyeok Kim, Jin Ryun Kim
  • Publication number: 20150062487
    Abstract: A direct type backlight module includes an optical film unit and a light emitting unit. The light emitting unit includes a laser sources, transreflective components, reflective components, and phosphors. Each laser source corresponds to a number of the transreflective components and one of the reflective components arranged at an optical path of a laser beam emitted from the laser source in sequence. The transreflective component transmits part of the irradiated laser beam and reflects the other part of the laser beam. The reflective component reflects the irradiated laser beam. The phosphors correspond to the transreflective components and the reflective components one-to-one and emit out white light when irradiated by the laser beam reflected by the transreflective components and the reflective components. The white light transmits through the optical film unit.
    Type: Application
    Filed: December 5, 2013
    Publication date: March 5, 2015
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: PO-CHOU CHEN
  • Publication number: 20150062490
    Abstract: Disclosed is a backlight unit that includes: a light guide plate that guides light, using internal total reflection; a plurality of short wavelength light sources that are disposed on a side of the light guide plate and radiate short wavelength lights into the light guide plate; a three-color light source array that is disposed on the bottom or the top of the light guide plate and includes a plurality of color conversion materials exciting the short wavelength lights from the short wavelength light sources into red or green or blue; and a lenticular lens array sheet that is disposed between the three-color light source array and the liquid crystal panel and refracts the three color lights emitted from the three-color light source array into the subpixels.
    Type: Application
    Filed: August 8, 2012
    Publication date: March 5, 2015
    Applicant: Research Cooperation Foundation of Yeungnam University
    Inventor: Jin Hyuk Kwon
  • Publication number: 20150062489
    Abstract: A liquid crystal display device includes a liquid crystal display panel, a light guide plate disposed on a lower part of the liquid crystal display panel, an LED circuit substrate disposed along at least one side of the light guide plate to accommodate an LED on a front surface thereof, and a heat transmission member having a first part that faces a lower surface of the light guide plate and a second part that is extendedly bent from the first part and faces the LED circuit substrate.
    Type: Application
    Filed: November 11, 2014
    Publication date: March 5, 2015
    Applicant: Samsung Electronics Co., Ltd
    Inventors: Kim Sung Ki, KIM Won-nyun
  • Publication number: 20150062488
    Abstract: A backlight module includes a number of laser units, a number of diffraction units, and a number of diverging units. Each laser unit includes three colored lasers arranged in a first straight line. The three lasers respectively emit red, green, and blue light. Each of the diffraction units includes three diffraction elements. The three diffraction elements are configured to diffract the light along the first straight line. Each of the diverging units is substantially an elongated semi-cylinder, and the longitudinal direction is along the first straight line. The diverging units diffract the three colors of light along a direction which is perpendicular to the direction of the first straight line.
    Type: Application
    Filed: August 25, 2014
    Publication date: March 5, 2015
    Inventor: PO-CHOU CHEN
  • Patent number: 8970807
    Abstract: Disclosed is a backlight module having light sources and a light guide plate, and the light guide plate has an incident side, and the lights emitted by the light sources pass through the incident side and enter into the light guide plate, and the a light direction changing layer is positioned at the incident side, and the light direction changing layer is employed for changing progress directions of the lights entering the incident side to shorten a distance perpendicular to the incident side from an intersection point of the lights emitted by adjacent light sources to the light sources. The present invention also discloses a liquid crystal display.
    Type: Grant
    Filed: December 1, 2011
    Date of Patent: March 3, 2015
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventor: Chihtsung Kang
  • Patent number: 8970461
    Abstract: Disclosed herein is a display including: a reflective image display section having pixels arranged in the display region; and a lighting device adapted to irradiate light to the image display section from diagonally in front, in which the light scattering characteristics in the display region are angle-dependent, and in which the lighting device irradiates light whose intensity distribution is adjusted so that when the display region displaying an image having an equal gray level is viewed from a given viewing position, the image luminance is uniform.
    Type: Grant
    Filed: February 16, 2012
    Date of Patent: March 3, 2015
    Assignee: Japan Display West Inc.
    Inventors: Tatsuya Yata, Kenji Tanase, Susumu Kimura, Takafumi Suzuki
  • Patent number: 8970811
    Abstract: An optical film for reducing color shift in an LCD is disposed in front of a liquid crystal panel of the LCD. The optical film includes a background layer, a plurality of engraved lens sections formed in the background layer such that the engraved lens sections are spaced apart from each other, and packed portions, each of the packed portions being disposed inside a respective one of the engraved lens sections. The refractive index of the packed portions is different from that of the background layer. The packed portions are partially packed inside the engraved lens sections. The refractive index of the packed portions is greater than that of the background layer. The background layer and the packed portions are made of transparent polymer resin.
    Type: Grant
    Filed: January 10, 2012
    Date of Patent: March 3, 2015
    Assignee: Samsung Corning Precision Materials Co., Ltd.
    Inventors: Seong-Sik Park, EunYoung Cho
  • Publication number: 20150055056
    Abstract: A display device includes a display panel and a backlight unit. The backlight unit has a light source that emits light, a light guide plate that guides the light from a side face of the light guide plate to a front face to the light guide plate to emit the light toward a rear face of the display panel, an optical sheet that is disposed on a front side relative to the light guide plate, and a first reflection member that is disposed between an end portion of the light guide plate near the light source and an end portion of the optical sheet near the light source, and reflects the light from the light source. One of a rear face of the first reflection member and the front face of the light guide plate has at least one absorption processing region that absorbs the light.
    Type: Application
    Filed: August 6, 2014
    Publication date: February 26, 2015
    Inventors: Hirofumi HORIUCHI, Hiromasa SASAOKA, Yuichi HAYASHI
  • Publication number: 20150055057
    Abstract: A display assembly and a touch sensitive assembly that includes a conductive linear polarizer.
    Type: Application
    Filed: August 14, 2014
    Publication date: February 26, 2015
    Inventor: Austin L. Huang
  • Patent number: 8964146
    Abstract: Optical constructions are disclosed. A disclosed optical construction includes first and second optical layers having first and second major surfaces that face each other and are separated by an air gap. The first and second surfaces are susceptible to physically contacting each other at a location in the air gap. The optical construction further includes an optical film that is disposed at the location to prevent the first and second major surfaces from contacting each other at the location. The optical film has an effective index of refraction that is not greater than about 1.3.
    Type: Grant
    Filed: April 14, 2010
    Date of Patent: February 24, 2015
    Assignee: 3M Innovative Properties Company
    Inventors: Encai Hao, William Blake Kolb, John A. Wheatley, Fei Lu, Adam D. Haag
  • Patent number: 8964147
    Abstract: An electro-optic device is provided. In the electro-optic device, when a groove is sealed to be hollow, a sacrificial film is formed in the groove before forming a first sealing film, the first sealing film is formed, and then the sacrificial film is removed through a penetration portion of the first sealing film. A second sealing film is formed on the first sealing film, and the penetration portion of the first sealing film is blocked by the second sealing film. For this reason, it is possible to form the first sealing film to block an opening portion of the groove, and it is possible to prevent the first sealing film from being formed up to the inside of the groove.
    Type: Grant
    Filed: July 12, 2012
    Date of Patent: February 24, 2015
    Assignee: Seiko Epson Corporation
    Inventors: Satoshi Ito, Yohei Ono
  • Patent number: 8964148
    Abstract: A backlight unit comprises a circuit board (20) having, a plurality of LED's (22) arranged in a matrix, a diffuser panel (62), and a support pin (50) positioned between the circuit board (20) and the diffuser panel (62) for supporting the diffuser panel (62). The support pin (50) includes a first fixation portion (51) inserted in a hole (21) formed on the circuit board (20), a second fixation portion (52) positioned apart from the first fixation portion (51), and a pillar (53) having a tip end supporting the diffuser panel (62). The pillar (53) and the first fixation portion (51) are aligned in a direction perpendicular to the circuit board (20). According to this backlight unit, it is possible to ensure freedom in wiring around the LED's (22) and to prevent the pillar (53) of the support pin (50) from hindering the light.
    Type: Grant
    Filed: June 16, 2011
    Date of Patent: February 24, 2015
    Assignee: Panasonic Liquid Crystal Display Co., Ltd.
    Inventor: Takaaki Kitada
  • Patent number: 8960981
    Abstract: A backlight module includes: a backplane, a backlight source arranged inside the backplane, a light guide plate arranged inside the backplane to correspond to the backlight source, a reflector plate disposed on a bottom of the light guide plate, an optic film disposed on a top of the light guide plate, and elastic members mounted to the backplane. The optic film has a top edge forming suspension sections and two first sidewalls respectively at left and right sides and each forming lugs. The suspension sections form first through holes. The lugs form second through holes. The backplane forms suspending pegs corresponding to the first through holes. The first through holes are mounted on the suspending pegs and the elastic members securely hold the second through holes and are mounted to the backplane so as to fix the optic films on the light guide plate.
    Type: Grant
    Filed: July 27, 2012
    Date of Patent: February 24, 2015
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventor: Guofu Tang
  • Publication number: 20150049280
    Abstract: A display device includes a display unit, a light source disposed on a back surface side of the display unit and that irradiate light to the display unit, an optical member disposed between the display unit and the light source, and a support member that transmits light irradiated from the light source and supports the optical member. The support member includes a first surface and a second surface and is disposed so that the first surface faces the light source.
    Type: Application
    Filed: July 31, 2014
    Publication date: February 19, 2015
    Inventors: Tomokazu Suzuki, Makoto Nameda
  • Patent number: 8953118
    Abstract: A liquid crystal display apparatus according to an embodiment of the invention includes: a liquid crystal cell; polarizing plates placed on both sides of the liquid crystal cell; a light diffusing element provided outside of the polarizing plate on a viewer side; and a backlight unit provided outside of the polarizing plate on an opposite side of the viewer side. The backlight unit includes a collimated light source device that emits collimated light having a brightness half-value angle of 3° to 35° toward the liquid crystal cell, and a ratio Fw(BL)/Fw(FD) between a diffused light half-value angle Fw(FD) of the light diffusing element and the brightness half-value angle Fw(BL) of the collimated light is 0.5 or less.
    Type: Grant
    Filed: November 26, 2010
    Date of Patent: February 10, 2015
    Assignee: Nitto Denko Corporation
    Inventors: Akinori Nishimura, Hiroyuki Takemoto, Takehito Fuchida, Minoru Miyatake, Shunsuke Shutou
  • Patent number: 8947618
    Abstract: A blue phase liquid crystal display device includes a backlight module and a blue phase liquid crystal display panel. The backlight module includes a plurality of light sources. The light sources generate a plurality of primary color lights with different bands. The blue phase liquid crystal display panel includes a blue phase liquid crystal layer. The blue phase liquid crystal layer includes a plurality of blue phase liquid crystal molecules and a plurality of chiral dopants. The blue phase liquid crystal layer has a reflection band. The reflection band is located between the bands of two adjacent primary color lights.
    Type: Grant
    Filed: March 27, 2012
    Date of Patent: February 3, 2015
    Assignee: Au Optronics Corporation
    Inventors: Cheng-Yeh Tsai, Tai-Hsiang Huang
  • Patent number: 8947617
    Abstract: Disclosed herein are a backlight assembly and a liquid crystal display (LCD) having the same, wherein the backlight assembly includes a light guide panel having a plurality of lateral sides; and a plurality of light source units each emitting light to a respective lateral side of the plurality of lateral sides, wherein at least two lateral sides of the plurality of lateral sides, which receive light emitted from two respective light source units of the plurality of light source units, are neighboring lateral sides, and wherein at least one lateral side is longer than an incident surface which receives light emitted from the light source unit.
    Type: Grant
    Filed: December 16, 2009
    Date of Patent: February 3, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sung Soo Jung, Eun Serb An, Hyun Jun Jung, Dae Hyoun Byoun
  • Publication number: 20150029438
    Abstract: A liquid crystal display (LCD) panel is provided, including a lower substrate; an upper substrate disposed to face the lower substrate; a liquid crystal layer disposed between the upper substrate and the lower substrate; a lower polarizing layer with a structure of wire grid formed on one surface of the lower substrate and configured to provide polarizing-filtering of light radiated from a backlight; and an upper polarizing layer with a structure of wire grid formed on one surface of the upper substrate and configured to provide polarizing-filtering of the radiated light passing through the lower polarizing layer and the liquid crystal layer, at least one of the wire grid of the lower polarizing layer and the wire grid of the upper polarizing layer including a reflection layer configured to reflect the radiated light and an absorbing layer configured to absorb external light incident from the outside through the upper substrate.
    Type: Application
    Filed: July 25, 2014
    Publication date: January 29, 2015
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Seong-eun CHUNG, Il-yong JUNG
  • Publication number: 20150022755
    Abstract: A display assembly includes a display member and backlight member. The backlight member has a light source and is bonded directly to the display member. The backlight member can be bonded directly to a display area of the display member, and an optically transparent adhesive can be used to bond a first surface of the backlight member to a first surface of the display member.
    Type: Application
    Filed: June 9, 2011
    Publication date: January 22, 2015
    Applicant: GOOGLE INC.
    Inventors: William Hamburgen, Amy Han
  • Patent number: 8937692
    Abstract: The present invention provides a color mixing lens which can improve color reproducibility, be made slim and adjust an emission pattern; and a liquid crystal display device having the same. The color mixing lens includes a light receiving portion having at least two light emission diodes positioned at a side for emitting color lights different from each other and light receiving recesses for placing the light emission diodes therein respectively, a color mixing portion formed on the light receiving portion for mixing the lights from the light emission diodes into a white color light, and a light emission portion formed on the color mixing portion for emitting the white light from the color mixing portion through a side thereof.
    Type: Grant
    Filed: October 20, 2010
    Date of Patent: January 20, 2015
    Assignees: Postech Academy-Industry Foundation, LG Display Co., Ltd.
    Inventors: Hae-Wook Han, Mee-Hyun Lim, Sung-Kyung Hwang, Min-Su Cho, In-Jae Chung, Sin-Ho Kang, Kyeong-Kun Jang, Jae-Ho Lee
  • Publication number: 20150015827
    Abstract: An LCD having a backlight module is proposed. The backlight module includes an ambient light collector for collecting ambient light; a back plate; a diffuser plate on the back plate; a plurality of optical fibers straightly fixed between the diffuser plate and the back plate and coupled to the ambient light collector. Microstructure is formed on the surface of the optical fibers straightly fixed between the diffuser plate and the back plate, and the microstructure makes light from the optical fibers evenly being emitted. The backlight module utilizes microstructure formed on a surface of optical fibers for evenly distributing light from the surface of the optical fibers. In hence, it effectively guides ambient light into the backlight module via the optical fibers and ensures at the same time that the light is evenly distributed to the backlight module.
    Type: Application
    Filed: July 15, 2013
    Publication date: January 15, 2015
    Applicant: Shenzhen China Star Optoelectronics Technology Co. Ltd.
    Inventors: Yong Fan, Yongyuan Qiu, Chao Ning
  • Patent number: 8934069
    Abstract: Provided is a liquid crystal display device which includes: a pair of transparent substrates which are arranged to face each other in an opposed manner with a liquid crystal layer sandwiched therebetween; a non-self-luminous display part having at least a light transmitting region which allows light to pass therethrough and a light shielding region which shields light; and a backlight part, wherein the transparent substrate arranged on a backlight part side includes a reflection film formed of a metal thin film in which an opening region corresponding to the light transmitting region is formed on a liquid crystal layer side of the transparent substrate on the backlight part side, and the backlight light incident on the opening region passes through the opening region, and the backlight light incident on a region where the reflection film is formed is reflected toward the backlight part side.
    Type: Grant
    Filed: April 14, 2011
    Date of Patent: January 13, 2015
    Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.
    Inventor: Shigeki Nishizawa
  • Patent number: 8934071
    Abstract: When first grooves are formed by irradiating a lower surface facing a light outgoing surface of a light guide plate for an illuminating device with laser beams, an outer circumferential region is firstly irradiated with the laser beams to form second grooves. Then, the second grooves are inspected. Next, irradiation conditions of the laser beams are adjusted based on an inspection result of the second grooves, irradiation positions of the laser beams are linearly displaced from formation positions of the second grooves, and formation of the first grooves in the scattering reflection region is then started.
    Type: Grant
    Filed: July 17, 2014
    Date of Patent: January 13, 2015
    Assignee: Seiko Epson Corporation
    Inventors: Yoichi Momose, Nobutaka Urano
  • Publication number: 20150009450
    Abstract: A double layer LC FP filter display device includes a backlight module (4) and a double layer LC FP filter module (2) arranged above the backlight module. The double layer LC FP filter module (2) includes a plurality of main pixels (402) arranged in a matrix. Each of the main pixels (402) comprises two sub-pixels (204). Each of the sub-pixels (204) includes one up-layer LC FP filter units (220) and one down-layer LC FP filter units (240) stacked together. The two sub-pixels (204) of the main pixels (402) are independently driven such that transmission light having two chromaticity is obtained when the white transmission light having the continuous spectrum provided by the backlight module (4) passes through the two sub-pixels (204). The chromaticity of the main pixels (402) is obtained by mixing the transmission light having two chromaticity.
    Type: Application
    Filed: July 11, 2013
    Publication date: January 8, 2015
    Applicant: Shenzhen China Star Optoelectronics Technology Co. Ltd.
    Inventor: Yuan Xiong
  • Patent number: 8926113
    Abstract: The present invention discloses a display device and a backlight module. The backlight module comprises a waveguide, a reflector, a backframe and a shimming device. The reflector arranged behind the waveguide. The backframe carries and supports the waveguide and the reflector. An light inlet edge of the waveguide and the backframe is defined with a gap in which a shimming device is seated within the gap so as to effectively support the waveguide. This arrangement can effectively prevent the warpage or bending of the waveguide in the area of the light inlet area. Stabilizing the efficiency of illumination of the backlight module. As a result, the insufficient of illumination of the waveguide encountered by the prior art is avoided.
    Type: Grant
    Filed: April 12, 2012
    Date of Patent: January 6, 2015
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
    Inventor: Quan Li
  • Patent number: 8928841
    Abstract: A backlight device for a liquid crystal display includes a substrate, and a plurality of white, red, green, and blue light emitting diodes arranged on the substrate.
    Type: Grant
    Filed: March 16, 2011
    Date of Patent: January 6, 2015
    Assignee: LG Display Co., Ltd.
    Inventors: Jae Bum Kim, Seung Hoon Yang
  • Patent number: 8928839
    Abstract: A display device includes a liquid crystal display panel that varies a phase of polarized light via liquid crystal molecules, wherein second recessed patterns of a second light guide plate are directly faced with first recessed patterns of a first light guide plate to form a first empty space, and wherein first flat surfaces of the first light guide plate are directly faced with second flat surfaces of the second light guide plate to form a second empty space narrower than the first empty space.
    Type: Grant
    Filed: June 5, 2014
    Date of Patent: January 6, 2015
    Assignee: LG Display Co., Ltd.
    Inventors: Se Hong Park, Jae Seok Park, Kyung Ha Lee
  • Patent number: 8926112
    Abstract: The backlight device is configured in a planar geometry by the combination of a plurality of light emitting units. The light guide plate of the light emitting unit has a light guide unit that guides light from the light source and a light emission surface that emits light from the light guide unit. Adjacent light emitting units are arranged to cross to each other and the light emission surface of a light emitting unit overlaps with the light guide unit of another light emitting unit such that the light guide unit of each light guide plate of the light emitting unit does not extend outside the light emission region of the backlight device.
    Type: Grant
    Filed: April 10, 2012
    Date of Patent: January 6, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroshi Uchiike, Masanao Kurita
  • Publication number: 20150002781
    Abstract: The current invention relates to sunlight readable full color active matrix liquid crystal display devices. By means of an electric controllable light shutter, both the internal backlight and the external sunlight can be used for lighting the display so as to deliver superior readability and color quality. The display shutter, including passive and active light shutter, can be also worked as the second display.
    Type: Application
    Filed: June 29, 2013
    Publication date: January 1, 2015
    Inventor: YAO-DONG MA
  • Publication number: 20150002782
    Abstract: A backlight unit includes a light source which emits light, a light guide plate which receives the light through an incident surface thereof and guides the light, and a back cover which accommodates the light source and is coupled to the light guide plate such which the incident surface is disposed in an inner space thereof, where an air guide area is defined between the light source and the light guide plate in the inner space, and the back cover includes an inclined surface inclined to the incident surface of the light guide plate in the air guide area.
    Type: Application
    Filed: November 8, 2013
    Publication date: January 1, 2015
    Applicant: Samsung Display Co., Ltd.
    Inventors: Heugon KIM, JooYoung KIM, Hyoung-Joo KIM, Hayoung LEE, Joo Woan CHO
  • Patent number: 8919997
    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: Grant
    Filed: April 17, 2014
    Date of Patent: December 30, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seoung-Jae Im, Seo-Young Choi, Eun-Joo Jang
  • Patent number: 8919998
    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: Grant
    Filed: April 17, 2014
    Date of Patent: December 30, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seoung-Jae Im, Seo-Young Choi, Eun-Joo Jang
  • Publication number: 20140375928
    Abstract: An optical film includes a first optical layer and a second optical layer. The first optical layer is disposed above the second optical layer. The second optical layer is a composite material layer, which includes a base material and a doping layer disposed in the base material. The optical film recycles an exterior light source and improves the utilization rate of the light source.
    Type: Application
    Filed: November 26, 2013
    Publication date: December 25, 2014
    Applicants: Tianma Micro-Electronics Co., Ltd., Xiamen Tianma Micro-Electronics Co., Ltd.
    Inventors: Xiaoling ZHUANG, Shichang CHEN
  • Patent number: 8915639
    Abstract: A lighting system including a light guide plate having a groove, a light source module arranged in the groove, and a projection from a side of the groove in the light guide plate toward the light source module for guiding a light from the light source module to the light guide plate.
    Type: Grant
    Filed: February 14, 2012
    Date of Patent: December 23, 2014
    Assignee: LG Innotek Co., Ltd.
    Inventor: Moon Jeong Kim
  • Patent number: 8917366
    Abstract: The present invention provides a liquid crystal display device, which includes a backlight module and a liquid crystal panel disposed on the backlight module. The backlight module includes an optic film assembly. The optic film assembly includes a first prism plate. The liquid crystal panel includes a first polarization plate. The first polarization plate is arranged to directly confront the first prism plate. The first prism plate includes a first base plate and a plurality of parallel first prism bars formed on an upper surface of the first base plate. The first prism bars have an axial direction that forms an included angle with respect to a polarization direction of the first polarization plate. The liquid crystal display device omits the topmost diffusion plate that is conventionally used in the known the optic film assembly so as to reduce the manufacture cost.
    Type: Grant
    Filed: April 12, 2012
    Date of Patent: December 23, 2014
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventors: Kuangyao Chang, Zanjia Su
  • Patent number: 8917367
    Abstract: A backlight module and a liquid crystal display are provided. The backlight module includes a light guide plate, a source, a first back plate and a second back plate. The first back plate includes a first main body and a first bending portion. The second back plate includes a second main body and a second bending portion. The first main body is slidably connected to the second main body. The light guide plate is fixedly connected to the first main body. A light-emitting surface of the light source is against a light incidence surface of the light guide plate, and another surface of the light guide plate is close to an inner side of the second bending portion. When the light guide plate expands with heat, the expanded light guide plate pushes the second bending portion to make the second back plate slide relative to the first back plate.
    Type: Grant
    Filed: October 12, 2011
    Date of Patent: December 23, 2014
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
    Inventor: Gege Zhou
  • Publication number: 20140368767
    Abstract: Provided are a surface light emitting device and a liquid crystal display apparatus equipped with the surface light emitting device. The surface light emitting device includes: a light guide plate including a side surface where light enters, a principal surface where the light goes out and a rear surface opposite to the principal surface; and a reflection sheet arranged on the rear surface of the light guide plate; a substrate arranged with facing the side surface of the light guide plate. The surface light emitting device further includes: plural light emitting bodies arranged along a longitudinal direction of the substrate and mounted on a surface of the substrate; a frame and a rear frame holding the substrate, the light guide plate and the reflection sheet; and one or more reflecting bodies arranged around a part of the light emitting bodies and extending along a longitudinal side of the substrate.
    Type: Application
    Filed: June 2, 2014
    Publication date: December 18, 2014
    Applicant: NLT TECHNOLOGIES, LTD.
    Inventors: Hideaki SUGAWARA, Masato MAKI
  • Patent number: 8913212
    Abstract: An object is to suppress degradation of an image quality of a display image. A plurality of display circuits arranged in M rows (M is a natural number of 2 or more) and N columns (N is a natural number) and a light unit are included; the light unit includes a plurality of light-emitting diode groups arranged in X rows (X is a natural number of 2 or more), overlaps with a display circuit in at least different one or more rows every row, and includes a light-emitting diode emitting red light, a light-emitting diode emitting green light and a light-emitting diode emitting blue light and a light guide plate formed between the plurality of display circuits and the plurality of light-emitting diode groups. The light guide plate includes X light guide members which transmits the light of the light-emitting diode groups in the rows different from each other.
    Type: Grant
    Filed: October 4, 2011
    Date of Patent: December 16, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Kenichi Wakimoto
  • Patent number: 8913207
    Abstract: Provided is a display device, including: a first protrusion formed to an inner side surface of one of side walls of the frame on a short side of an angled corner portion surrounded by the side walls; a second protrusion formed to an inner side surface of one of the side walls on a long side of the angled corner portion; and a third protrusion formed at another angled corner portion on another end side of at least one of the side walls sharing the angled corner portion provided with the first and second protrusions, and formed to an inner side surface of one of the side walls that is opposed to the side wall to which the first protrusion and/or the second protrusion are/is arranged, the optical sheet including cut-out first to third recesses which are to be fitted to the first to third protrusions.
    Type: Grant
    Filed: June 30, 2011
    Date of Patent: December 16, 2014
    Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.
    Inventor: Saburo Watanabe
  • Patent number: 8905566
    Abstract: A flat-panel display (such as a liquid crystal display) includes one or more features that reduce temperature changes in an array of light valves disposed on a substrate. In particular, heat generated in a light source and/or electronics is conducted away from the light values. For example, a light-source holder, which contains the light source, may include holes that increase the thermal resistance between the light source and the substrate. Alternatively, the light-source holder may include a material having a thermal conductivity that is higher than that of stainless steel. In addition, the flat-panel display may include materials and/or a geometry that increases the thermal resistance along a direction in a plane of the substrate. By reducing temperature changes in the flat-panel display, these features can reduce or eliminate color changes and other visual artifacts that can degrade the quality of displayed images.
    Type: Grant
    Filed: June 27, 2012
    Date of Patent: December 9, 2014
    Assignee: Apple Inc.
    Inventors: Ihtesham H. Chowdhury, Frank F. Liang, Amaury J. Heresztyn, Jeremy C. Franklin, Benjamin M. Rappoport, Derek W. Wright
  • Publication number: 20140354709
    Abstract: Techniques for using variable flower assemblies to control light leakage between designated portions of light-emitting elements are provided. In some embodiments, a variable flower assembly comprises a plurality of light-transmissive segments each may be electronically set to a different light-transparency level. The variable flower assembly substantially forms a tube around a light-emitting element mounted on a first plane. A first edge of each of the light-transmissive segments collectively surrounds the light-emitting element on a second plane substantially parallel to the first plane. A second opposing edge of each of the light-transmissive segments collectively forms an opening of the tube. In some embodiments, a reflective assembly which reflectance level is electronically controllable may surround the variable flower assembly.
    Type: Application
    Filed: August 18, 2014
    Publication date: December 4, 2014
    Inventors: Neil Mammen, Ashley Penna, Ajit Ninan