Edge Lit Type Light Guide Behind Liquid Crystal Patents (Class 349/65)
  • Publication number: 20150062494
    Abstract: A light emitting module includes at least one light emitting chip mounted on a substrate, a sidewall including a fastener fastened to the substrate and surrounding the light emitting chip, and a transparent resin mixed with phosphor configured to fill a space partitioned by the sidewall.
    Type: Application
    Filed: January 7, 2014
    Publication date: March 5, 2015
    Applicant: Samsung Display Co., Ltd.
    Inventor: Se Ki Park
  • Patent number: 8970805
    Abstract: A display device includes a display panel including an upper substrate and a lower substrate facing-coupled to a rear surface of the upper substrate, a backlight unit supplying light to the display panel, a cover member receiving the display panel and covering a side surface of the display panel, a guide frame supporting the display panel and guiding a position of the display panel and a position of the backlight unit, and an adhesive member injected between the guide frame and the display panel and coupling the guide frame and the display panel. The guide frame includes a horizontal part and a first prevention jaw formed to protrude from one end of the horizontal part, and preventing the adhesive member from being injected into the backlight unit when injecting the adhesive member.
    Type: Grant
    Filed: December 14, 2012
    Date of Patent: March 3, 2015
    Assignee: LG Display Co., Ltd.
    Inventor: Geon Yong Kim
  • Publication number: 20150055058
    Abstract: A backlight unit (BLU) and a liquid crystal display apparatus having the BLU are provided. The BLU includes a plurality of light-emitting diodes (LEDs) configured to emit blue light, a fluorescent member configured to convert the blue light emitted from the plurality of LEDs into tricolor light and emit the tricolor light, and a filter disposed between the fluorescent member and the plurality of LEDs, and configured to selectively filter a first wavelength area of the tricolor light emitted from the fluorescent member toward the plurality of LEDs, and reflect a second wavelength area of the tricolor light emitted from the fluorescent member toward an output direction.
    Type: Application
    Filed: March 18, 2014
    Publication date: February 26, 2015
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Na-won JANG, Kun-ho CHO
  • 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
  • Patent number: 8958030
    Abstract: A backlight unit having buffer structures comprises a back cover, a light guide plate including an opening, and a buffer structure disposed in the back cover and the opening of the light guide plate is engaged with the buffer structure so as to connect the back cover with the light guide plate. In addition, a liquid crystal display device comprises the backlight unit and a liquid crystal panel adjacent to the backlight unit.
    Type: Grant
    Filed: July 11, 2012
    Date of Patent: February 17, 2015
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventor: Ze-Xin Wu
  • Patent number: 8958031
    Abstract: A liquid crystal display includes a light guide plate, a light source, first and second liquid crystal display panels, a main circuit board, and a heat discharging member. The light guide plate includes first and second exiting surfaces, and a side surface extending from the first and second exiting surfaces. The light source faces the side surface and provides light to the side surface. The first and second liquid crystal display panels receive the light exiting from the first and second exiting surfaces, respectively. The main circuit board applies an electrical signal to at least one of the first and second liquid crystal display panels. The light source and the main circuit board are mounted on the heat discharging member, and the heat discharging member discharges heat generated by the light source.
    Type: Grant
    Filed: September 4, 2012
    Date of Patent: February 17, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Wan-Sang Kim, Sanggil Kwak, Wonju Kim
  • Patent number: 8958029
    Abstract: According to one embodiment, a liquid crystal display device includes a liquid crystal cell, light source devices and a light guide plate. The light guide plate applies, to a rear surface of the liquid crystal cell, light beams from the light source devices. The light guide plate includes a first light input portion at a first-shorter-side side surface and a second light input portion at a second-shorter-side side surface. The light guide plate includes a flat first surface opposed to the rear surface and a second surface opposite to the first surface. The second surface includes a first slant surface inclined so that a thickness of the light guide plate decreases as a position goes from the first-shorter-side side surface to an approximately central portion and a second slant surface inclined so that the thickness decreases as a position goes from the second-shorter-side side surface to the approximately central portion.
    Type: Grant
    Filed: December 7, 2011
    Date of Patent: February 17, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Shinji Matsuo
  • Publication number: 20150042924
    Abstract: A light emitting device comprising a first frame, a light bar and a light guide plate is provided. The first frame has a groove which has a bottom plane, two inner walls, and an opening. The light bar disposed in the groove comprises a substrate having a lower surface attached to the bottom plane and an upper surface having several light sources. The light guide plate has a light emitting surface and a light incident surface. The light incident surface perpendicular and adjoining to the light emitting surface has several abutting portions. The light guide plate is inserted to the groove via the opening. The emitting light of the light source entering the light guide plate is guided by the light guide plate to be emitted off the light emitting surface. The abutting portions abut to the upper surface, so that the light bar is fixed in the groove.
    Type: Application
    Filed: July 7, 2014
    Publication date: February 12, 2015
    Inventors: Chen-Yi Su, Yung-Long Jian
  • Publication number: 20150042899
    Abstract: This display device is provided with: a light source unit having a light source and a light source substrate; a display panel; a light receiving face that is disposed on the back side of the display panel, and upon which light is incident; a light guide plate having a light exiting surface that emits light toward the back side of the display panel; a wall that faces the light receiving face in such a manner that a gap is formed between the light receiving face and the wall; a light source support member that supports the light source unit, and is inserted with the light source unit in the gap etc. from the back side of the light guide plate; and an elastic member that is disposed on the light source support member, protrudes farther toward the light receiving surface than the light source, is inserted in the gap before the light source unit, and is formed of an elastic material.
    Type: Application
    Filed: February 22, 2013
    Publication date: February 12, 2015
    Inventor: Masatoshi Tomomasa
  • Publication number: 20150042898
    Abstract: This liquid crystal display device is provided with: an LED; a liquid crystal panel; a light guide plate; a metal chassis disposed on the reverse side of the light guide plate from the liquid crystal panel, the chassis having a step provided by bending a bottom plate, and the bottom plate being sectioned into a first bottom plate part and a second bottom plate part by the step; an LED substrate attached to the first bottom plate part, the LED being arranged on a plate surface of the LED substrate; and a frame for accommodating the liquid crystal panel, the LED, the light guide plate, and the LED substrate so as to enclose these accommodated components between the frame and the first bottom plate part while abutting the second bottom plate part, the frame being arranged on a display surface side with respect to the liquid crystal panel. By the present invention, the temperature of the frame can be prevented from becoming too high in a display device of a type not provided with a cabinet.
    Type: Application
    Filed: February 15, 2013
    Publication date: February 12, 2015
    Applicant: Sharp Kabushiki Kaisha
    Inventor: Jo Ikuta
  • Publication number: 20150042923
    Abstract: The present invention discloses light-guiding plate, backlight module and liquid crystal display device. The light-guiding plate includes first incident surface, light-emitting surface, bottom surface and side surface; wherein light-emitting surface being connected to first incident surface, bottom surface being connected to first incident surface, light-emitting surface being connected to side surface, bottom surface being connected to side surface, the angle between first incident surface and side surface connected to first incident surface being obtuse, and light-emitting surface including a plurality of trenches radiating from first incident surface. The radiating trenches disposed on light-emitting surface have certain converging effect on light propagating in light-guiding plate. The propagating light will propagate along the trenches.
    Type: Application
    Filed: August 15, 2013
    Publication date: February 12, 2015
    Inventor: Hu He
  • 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: 8950922
    Abstract: A lighting module may be provided that comprises: a first and a second light sources, which are disposed opposite to each other; a light guide plate disposed between the first light source and the second light source and including a top surface and a bottom surface; a first case including the first light source; a second case including the second light source; and an optical plate disposed on at least one of the top surface and the bottom surface of the light guide plate, wherein the optical plate reflects a part of light from the first and the second light sources and transmits the rest of the light.
    Type: Grant
    Filed: October 17, 2013
    Date of Patent: February 10, 2015
    Assignee: LG Innotek Co., Ltd.
    Inventors: Han Gyoul Kim, Young Kuk Kwak, Sang Jun Hong, Young Sik Kim
  • Publication number: 20150036078
    Abstract: A liquid crystal display device having brightness uniformity at its front and lateral sides is provided according to one or more embodiments. In one embodiment, the liquid crystal display device includes a reflection sheet reflecting light, an optical plate including a substrate for guiding light, a height-varying portion formed on one surface of the substrate, not facing the reflection sheet, and a prism pattern formed on the height-varying portion, and a plurality of light sources arranged on one lateral surface of the optical plate in a first direction so as to correspond to a position of the height-varying portion having a height not greater than an average height from the one surface of the substrate to the height-varying portion, wherein the prism pattern extends in a second direction substantially perpendicular to the first direction, and the average height is in a range of about 0.1% to about 10% of the thickness of the substrate.
    Type: Application
    Filed: October 20, 2014
    Publication date: February 5, 2015
    Inventors: Jeong Min SEO, Jee Hong MIN, Young Chan KIM, Moon Gyu LEE, Kyu Seok KIM
  • Publication number: 20150036077
    Abstract: A curved display device includes a display panel having a display area on which an image is displayed; a receiving member receiving the display panel; and a cover member covering a border of the display panel to combine with the receiving member. The display panel has a bent shape along a first direction and a second direction crossing the first direction and each of the receiving member and the cover member is bent to maintain the bent shape of the display panel.
    Type: Application
    Filed: January 16, 2014
    Publication date: February 5, 2015
    Applicant: Samsung Display Co., Ltd.
    Inventors: Cheolse LEE, Jeongman SON, CHEONG HUN LEE, JinYoung LEE, Yun-Gun LEE
  • Patent number: 8947342
    Abstract: A method and apparatus for controlling a backlight unit of a three-dimensional (3D) display apparatus receiving a 3D video sequence is provided. The method includes determining the image brightness level of the 3D video sequence displayed on a liquid crystal display (LCD) unit, for each of a plurality of partial regions of the LCD unit to which a plurality of sub-blocks of the backlight unit emit light; determining turn-on times of the plurality of sub-blocks of the backlight unit, based on the image brightness of each of the partial regions of the LCD unit; and determining turn-on periods of the plurality of sub-blocks of the backlight unit by synchronizing with a switching period between a set including a left visual point frame and a right visual point frame of the 3D video sequence.
    Type: Grant
    Filed: February 11, 2011
    Date of Patent: February 3, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sang-moo Park, Jong-hoon Jung, Dae-sik Kim
  • Patent number: 8944661
    Abstract: Uneven brightness is less likely to be caused and good display quality is achieved. A lighting device includes a plurality of light emitting units each of which includes a base board and a plurality of light emitting components on the base board, a linear light source including the plurality of light emitting units that are arranged linearly, a light guide member having an end portion and provided such that the end portion faces the linear light source, a reflection sheet configured to reflect light from the linear light source, and a reflection cover provided close to the light guide member and corresponding to a gap that is generated between the light emitting units.
    Type: Grant
    Filed: July 5, 2011
    Date of Patent: February 3, 2015
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Yasumori Kuromizu
  • Patent number: 8946999
    Abstract: A light emitting device including a light emitting diode having a semiconductor body that generates electromagnetic radiation; a converter element downstream of the first light emitting diode which converts at least part of the electromagnetic radiation into first color light; a second light emitting diode having a semiconductor body that generates light of the first color; a radiation exit area from which the first color light emerges; and a drive circuit operating the second light emitting diode, wherein the converter element contains at least one luminescence conversion material that emits the first color light, as the operating duration of the first light emitting diode increases, intensity of the first color light emitted by the converter element decreases, the drive circuit controls the second light emitting diode dependent on at least one of measurement values: intensity of the first color light emitted by the converter element, temperature of the converter element, operating duration of the first ligh
    Type: Grant
    Filed: October 20, 2010
    Date of Patent: February 3, 2015
    Assignee: OSRAM Opto Semiconductors GmbH
    Inventors: Stephan Kaiser, Thorsten Kunz, Julius Muschaweck
  • 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: 20150029442
    Abstract: A liquid crystal display apparatus includes a liquid crystal display panel including a liquid crystal cell between first second polarizing plates; and a surface light source device. The surface light source device includes a light source unit, a light guide plate for outputting first directivity light having directivity of maximum intensity in a first direction, which forms a predetermined angle from a normal direction of the light output surface in a plane approximately parallel to a light guiding direction of light, and having a high ratio of a polarized light component oscillating in the plane and a prism sheet being configured to convert the first directivity light into second directivity light directed in a second direction within a predetermined angle from the normal direction of the light output surface of the light guide plate while substantially maintaining a polarization state of the first directivity light.
    Type: Application
    Filed: February 14, 2013
    Publication date: January 29, 2015
    Applicants: KEIO UNIVERSITY, DAI NIPPON PRINTING CO., LTD., NITTO DENKO CORPORATION, NITTO JUSHI KOGYO CO., LTD.
    Inventors: Yasuhiro Koike, Runa Nakamura, Fumihiro Arakawa, Hiroshi Yamamoto, Takehito Fuchida, Shouhei Maezawa, Hiroyuki Takemoto, Nao Murakami, Tsuyoshi Ishikawa, Eizaburo Higuchi
  • Publication number: 20150029441
    Abstract: A light unit for a display includes: a light guide plate, a plurality of light sources facing a side of the light guide plate and spaced apart from the light guide plate; and a buffering member between the light guide plate and the light source. The buffering member includes: spacing parts positioned respectively between adjacent light sources and contacting the light guide plate, and a blocking part connecting the plurality of spaced parts to each other and facing a side direction of each light source.
    Type: Application
    Filed: November 27, 2013
    Publication date: January 29, 2015
    Applicant: Samsung Display Co., Ltd.
    Inventors: Eui Jeong KANG, Hyun-Jeong KIM, Sang Heon YE, Sang Hoon LEE
  • Publication number: 20150029443
    Abstract: A backlight unit includes: a light guide plate; a light source facing an entrance surface of the light guide plate; an optical sheet member located toward an exit surface of the light guide plate; and a frame surrounding the optical sheet member, the light source, and the light guide plate to retain the optical sheet member, the light source, and the light guide plate. The optical sheet member includes a protrusion protruding toward the light source and fixed to the light guide plate.
    Type: Application
    Filed: April 19, 2013
    Publication date: January 29, 2015
    Inventors: Yoji Inui, Akiyoshi Takaoka, Kenichi Hatsuda, Takahiro Adachi, Minoru Yuasa, Hideo Yoshida
  • Publication number: 20150029440
    Abstract: This invention relates to a backlight module and a liquid crystal display where the backlight module comprises a light guide plate, a substrate, a light source, a reflective element and a reflective sheet. The light guide plate and the reflective sheet are joined by a double coated film that is set up along the edge of a lower surface of the light guide plate. A light exit plane of the light source is placed in between the lower surface of the light guide plate and a light exit plane of the light guide plate. By means of altering the setup of the light guide plate and the reflective sheet, this invention settles the technical issue of mura appeared at the corresponding display panel.
    Type: Application
    Filed: April 20, 2012
    Publication date: January 29, 2015
    Applicant: Shenzhen China Star Optoelectronics Technology Co. Ltd.
    Inventor: Jianfa Huang
  • Publication number: 20150022760
    Abstract: A light guide assembly, a backlight module and a liquid crystal display (LCD) are provided. The backlight module includes a back plate light guide plate, an adhesive member and a light source. The light guide plate is disposed on the back plate and includes a first optical surface, a second optical surface and a light-incident surface. The first optical surface is opposite to the second optical surface. The light-incident surface connects the first optical surface and the second optical surface The first optical surface or the second optical surface of the light guide plate is set with recess. The adhesive member is disposed in the recess to adhere the light guide plate to the back plate. The light source is disposed on the back plate and emits light toward the light guide plate.
    Type: Application
    Filed: October 18, 2013
    Publication date: January 22, 2015
    Applicant: Radiant Opto-Electronics Corporation
    Inventors: Yu-Hung HSU, Jui-Lin CHEN
  • Publication number: 20150022759
    Abstract: An electronic device is provided with a display such as a liquid crystal display mounted in an electronic device housing. The display may be provided with a backlight unit. The backlight unit may include radioluminescent backlight structures. The radioluminescent backlight structures include an ionizing radiation source that produces beta particles or other ionizing radiation. The radioluminescent backlight structures also include a phosphor that produces light in response to being struck by the ionizing radiation. The light produced by the phosphor passes through liquid crystal display layers and serves as backlight for the display. Photoluminescent material and light-emitting diodes may also be used to produce backlight for the display. The display backlight may have a light guide plate that is provided with light from the radioluminescent light source or other light source structures.
    Type: Application
    Filed: July 18, 2013
    Publication date: January 22, 2015
    Inventors: Jason J. Huey, Kevin M. Keeler
  • Publication number: 20150022761
    Abstract: A light guide plate transfer molding method for performing transfer molding of a light guide plate using a first mold and a second mold, includes performing, on a resin material, transfer molding of a first pattern and a second pattern that are provided on a transfer face of the first mold. The first pattern changes with a specific interval P serving as one period. The second pattern changes with one or two or more periods that correspond to 1/Na of the interval P. Na is a positive integer that satisfies Na?m, m being a specific positive integer.
    Type: Application
    Filed: June 17, 2014
    Publication date: January 22, 2015
    Inventor: Gouo Kurata
  • 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
  • Patent number: 8937694
    Abstract: The invention provides a middle frame for an LCD device and an LCD device. The middle frame for an LCD device includes a receiving part corresponding to a light incident side of the LCD device, and a buffer part which is fixedly connected with the receiving part and corresponds to the non-light incident side of the LCD device; the receiving part is made of hard material, and the buffer part is made of flexible material. In the invention, because the middle frame is divided into a receiving part and a buffer part, the buffer part is made of flexible material and can be directly used for clamping the light guide panel to position the light guide panel, and the receiving part is made of plastic material which has certain hardness. Thus, the planeness of the whole middle frame can be kept. Furthermore, the position of the receiving part corresponding to the light source is made of plastic material and has certain high temperature resistance. The conventional middle frame is generally injection molded by plastic.
    Type: Grant
    Filed: March 29, 2012
    Date of Patent: January 20, 2015
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventors: Yicheng Kuo, Shihhsiang Chen, Gege Zhou
  • Patent number: 8934070
    Abstract: Disclosed are a backlight assembly including a light guide plate having at least one slit, at least one light source unit disposed at a side of the light guide plate, and a lower cover which accommodates the light source unit and has at least one support coupled with the at least one slit.
    Type: Grant
    Filed: November 3, 2009
    Date of Patent: January 13, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sung Soo Jung, Eun Serb An, Hyun Jun Jung, Dae Hyoun Byoun
  • Patent number: 8934068
    Abstract: A backlight assembly includes a light source unit including a circuit board, a light source disposed on a first plane of the circuit board, and at least one connection unit disposed on a second plane opposite to the first plane of the circuit board and electrically connected to the light source, a receiving container having a bottom plate and sidewalls extending from edges of the bottom plate and receiving the light source unit, the bottom plate including at least one opening portion in which the connection unit is inserted and exposed to the outside, and at least one driving unit disposed at a rear surface of the receiving container and connected to the connection unit for driving the light source unit.
    Type: Grant
    Filed: April 29, 2014
    Date of Patent: January 13, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jin Hee Park, Bong-Hyun You, Jae-Chang Choi
  • 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: 20150009454
    Abstract: A phosphor sheet includes: a stacked structure including a first phosphor layer and a pair of transparent films each being in contact with either side of the first phosphor layer; a seal layer integrally covering an area from an end face of the stacked structure to a periphery of the stacked structure; and a second phosphor layer further covering a portion of the seal layer, the portion covering at least the periphery of the stacked structure.
    Type: Application
    Filed: June 23, 2014
    Publication date: January 8, 2015
    Inventors: Shinpei Nagatani, Yasuhiro Nishida, Kenji Kobayashi
  • Publication number: 20150009783
    Abstract: There is provided an illumination device including: a light guide plate in which a light diffusion pattern of diffusing incident light is formed to have density that is coarse on one side and gets denser toward the other side; a first light source which is provided on a side corresponding to the one side of the light diffusion pattern in the light guide plate; and a second light source which is provided on a side corresponding to the other side of the light diffusion pattern in the light guide plate.
    Type: Application
    Filed: July 3, 2014
    Publication date: January 8, 2015
    Inventors: Kei HANZAWA, Eiji YAMAKAWA
  • Publication number: 20150009453
    Abstract: A light source unit includes a light source configured to emit a light, a first case including a first groove configured to receive the light source therein, a first sealing member disposed in the first groove and covering the light source, a second case disposed on the first case and including a first opening portion overlapping with the first groove, and a quantum dot member disposed between the first case and the second case and including a light conversion area configured to convert the light to a white light and a defect area surrounding the light conversion area. The first opening portion is disposed through the second case, a portion of the light conversion area overlaps with the first opening portion and the first groove, and the light source unit is configured such that the white light exits therefrom through the first opening portion.
    Type: Application
    Filed: December 9, 2013
    Publication date: January 8, 2015
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: HanMoe CHA, SEUNG-HWA HA, DONGHOON KIM, SEOKHYUN NAM, HAYOUNG LEE
  • Patent number: 8928836
    Abstract: The present invention provides a backlight module and a liquid crystal display device. The backlight module which comprises a waveguide including a light exiting surface, and a side surface adjoining the light-exiting surface. An optical film includes a main portion disposed on the existing surface of the waveguide, and a skirt extends from a peripheral of the main portion and adjoining to the side surface of the light-exiting surface. A backboard includes a base and an upright extending from peripheral of the base, the waveguide is disposed on the base, and the upright is spaced with the skirt; and wherein a retaining device is supportably arranged between the upright and the skirt so as to press the skirt onto the side surface of the waveguide. The present invention can effectively reduce the estate of the backboard, and is beneficial to the design narrow-border of liquid crystal display device.
    Type: Grant
    Filed: October 29, 2012
    Date of Patent: January 6, 2015
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
    Inventors: Jiaqiang Wang, Gang Yu
  • 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: 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: 8928833
    Abstract: The present invention discloses a backlight module and an LCD device, comprising: a backplane and an LGP; the edge(s) of the LGP is provided with lug boss(es), each lug boss is provided with a positioning hole, and the backplane is provided with rivet(s) for matching with the positioning hole; a buffer structure is arranged between the rivet and the wall of the positioning hole. In the present invention, because the edge(s) of the LGP is provided with lug boss(es), each lug boss is provided with a positioning hole, the arrangement of the positioning hole does not influence the light guide area of the LGP; meanwhile, because a layer of buffer structure is arranged between the positioning hole and the rivet, the rupture of the part with concentrated stress in the positioning hole during collision is avoided.
    Type: Grant
    Filed: December 4, 2011
    Date of Patent: January 6, 2015
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventors: Mingfeng Deng, Jungmao Tsai, Songxian Wen, Yizhuang Zhuang, Hui Zhou, Jingming Wu
  • Publication number: 20150002786
    Abstract: The present invention provides a backlight module and a liquid crystal display apparatus. The backlight module comprises a light guide plate; a base disposed at one side of the light guide plate; a light source disposed on the base; and a reflective element configured to reflect light rays which are emitted from the light source to a light-incident surface of the light guide plate, wherein the reflective element includes a reflective curved surface and a first reflective plane connected thereto. The backlight module and the liquid crystal display apparatus of the present invention can have a high coupling efficiency.
    Type: Application
    Filed: March 28, 2012
    Publication date: January 1, 2015
    Applicant: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventor: Jianfa Huang
  • Publication number: 20150002785
    Abstract: A backlight module and a liquid crystal display are disclosed, and the backlight module comprises a plastic front frame, a rubber frame, a chipset and an electromagnetic shield member where the electromagnetic shield member is disposed around the chipset, for the shield of outside electromagnetic interference (EMI) to the chipset. Once the front frame is made of plastic material, the electromagnetic shield member can be used to shield the outside EMI to the chipset, which assures the stability of the control signals of the chipset and further assures the quality of the screen display.
    Type: Application
    Filed: March 26, 2012
    Publication date: January 1, 2015
    Applicant: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventors: Chong Huang, Jiahe Cheng
  • Publication number: 20150002787
    Abstract: A photovoltaic mobile device includes a backlight module and a liquid crystal display panel. The backlight module includes a plurality of light sources, a photovoltaic substrate, and a light guide plate. The light sources are disposed at a side of the light guide plate, and the light guide plate is disposed above the photovoltaic substrate. The liquid crystal display panel is disposed on the light guide plate. The photovoltaic substrate includes a plurality of strip type photovoltaic components.
    Type: Application
    Filed: February 5, 2014
    Publication date: January 1, 2015
    Applicant: HannStar Display Corporation
    Inventors: Chia-Shin WENG, Wei-Ren LO, Chao-Jung CHEN, Chien-Liang KUO, Chih-Pin LIN
  • Publication number: 20150002783
    Abstract: A transparent liquid crystal display device includes a liquid crystal display panel displaying an image in an image display mode and transparently implementing in a transparent mode; a backlight unit including a light guide plate disposed on a rear surface of the liquid crystal display panel and a light source array disposed at one side of the light guide plate; a light source driving unit supplying a driving current to the light sources; a cover bottom enclosing an edge of the side and rear surfaces of the backlight unit; and an illumination sensor measuring illumination of an external light incident to the rear surface of the cover bottom.
    Type: Application
    Filed: December 16, 2013
    Publication date: January 1, 2015
    Applicant: LG DISPLAY CO., LTD.
    Inventor: Kiduck Park
  • Patent number: 8922733
    Abstract: Light sources are disclosed. A disclosed light source includes an optically reflective cavity that includes an input port for receiving light and an output port for transmitting light, a lamp that is disposed at the input port, and an optical stack that is disposed at the output port. The optical stack includes a forward scattering optical diffuser that is disposed at the output port and has an optical haze that is not less than about 20%, and an optical film that is disposed on the optical diffuser. The optical film enhance total internal reflection at the interface between the optical film and the optical diffuser. The optical film has an index of refraction that is not greater than about 1.3 and an optical haze that is not greater than about 5%. The optical stack also includes a reflective polarizer layer that is disposed on the optical film. Substantial portions of each two neighboring major surfaces in the optical stack are in physical contact with each other.
    Type: Grant
    Filed: October 22, 2010
    Date of Patent: December 30, 2014
    Assignee: 3M Innovative Properties Company
    Inventors: John A. Wheatley, Tao Liu, Encai Hao, William Blake Kolb, Michael Benton Free
  • Publication number: 20140375891
    Abstract: A display device 10 includes: light sources 17; a light guide plate 16 having a light-receiving face 16c and a light-exiting surface 16a, and a display panel 11 having a display surface 11a where light that exits the light-exiting surface 16a is used for image display; a driving substrate 113 having a mounting surface 113a on which the light sources 17 are mounted; flexible wiring substrates 111 that electrically connect the display panel 11 to the driving substrate 113; a chassis 14 having an extending edge 141 that extends beyond the light-receiving face 16c and that is arranged to face a surface 16b opposite to the light-exiting surface 16a; and a light source positioning member 18 that is detachably mounted on the chassis 14 and that is adhered to the driving substrate 113 such that the light sources 17 face the light-receiving face 16c with a gap therebetween.
    Type: Application
    Filed: January 25, 2013
    Publication date: December 25, 2014
    Applicant: Sharp Kabushiki Kaisha
    Inventor: Mitsuru Hosoki
  • Publication number: 20140375897
    Abstract: A backlight 12 includes a first LED board 18A, a second LED board 18B 18B, a light guide plate 19, a first LED drive circuit 26a, a second LED drive circuit 26b, and light reflection portions 28. The second LED board 18B is arranged in a high temperature area in which a temperature tends to become higher. The light guide plate 19 includes a pair of end surfaces opposite the first LED board 18A and the second LED board 18B, respectively, and through which rays of light from the first LED board 18A and the second LED board 18B enter, and a plate surface through which rays of light exit on a light exiting side. The first LED drive circuit 26a and the second LED drive circuit 26b are configured to supply a smaller current to the second LED board 18B than the current supplied to the first LED board 18A.
    Type: Application
    Filed: February 8, 2013
    Publication date: December 25, 2014
    Applicant: Sharp Kabushiki Kaisha
    Inventor: Yasutaka Sugiura
  • Publication number: 20140375929
    Abstract: Example light management films including a plurality of tapered protrusions are described. In many embodiments, a film includes a reflective polarizer layer and a plurality of tapered protrusions disposed on and tapering away from the reflective polarizer layer. At least one tapered protrusion in the plurality of tapered protrusions has a first lateral cross-section at a first location along a height of the tapered protrusion and a second lateral cross-section at a second location along the height of the tapered protrusion. The first cross-section has a first shape and the second cross-section has a different second shape.
    Type: Application
    Filed: December 18, 2012
    Publication date: December 25, 2014
    Inventors: Gary T. Boyd, Qingbing Wang, Kenneth Andrew Penner Meyer
  • Publication number: 20140368769
    Abstract: An LED assembly includes a supporting layer; LED chips arranged on a first surface of the supporting layer and spaced apart from each other; a coating layer formed over the LED chips and including a fluorescent substance, wherein the coating layer changes light emitted from the LED chips into a linear light source; and an electrode pattern layer formed on a second surface of the supporting layer and in selectively removed regions of the supporting layer and contacting the LED chips.
    Type: Application
    Filed: December 19, 2013
    Publication date: December 18, 2014
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Seo-Yoon Lee, Min-Su Cho, Myung-Won Seo
  • Patent number: 8913211
    Abstract: Discussed are a backlight unit and an LCD device including the same, which prevent the thermal deformation and movement of a light guide plate and realize uniform luminance. The backlight unit includes a supporting case supporting a supporting side wall having a receiving space, a light guide plate placed in the receiving space of the supporting case, a light source member irradiating light on a light incident surface prepared in a side surface of the light guide plate, an optical sheet member disposed on the light guide plate, and a plurality of holder members disposed at certain intervals between the supporting side wall and some side surfaces of the light guide plate except the light incident surface. The holder members are deformed in shape by thermal deformation of the light guide plate.
    Type: Grant
    Filed: December 27, 2012
    Date of Patent: December 16, 2014
    Assignee: LG Display Co., Ltd.
    Inventors: Jung Hoon Park, Je Hwan Sin, Sang Hun Baek
  • Patent number: 8908124
    Abstract: A light guide plate for a backlight unit of a liquid crystal display device includes one side surface where light from a first light source is incident; the other side surface opposite to the one side surface; a front surface combining the one and the other one side surfaces; and a rear surface including a plurality of light guide patterns, each of the plurality of light guide patterns including a protruding portion and a groove portion, wherein one of the protruding portion and the groove portion is positioned at a center of the other one of the protruding portion and the groove portion.
    Type: Grant
    Filed: July 28, 2010
    Date of Patent: December 9, 2014
    Assignee: LG Display Co., Ltd.
    Inventors: Sang-Hyun Lee, Byoung-Ku Kim, Won Taek Moon, Young-Ik Hwang
  • 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