Edge Lit Type Light Guide Behind Liquid Crystal Patents (Class 349/65)
  • Publication number: 20140354918
    Abstract: A surface light source includes a light source facing an end face of a lightguide plate, a rectangular-shaped frame surrounding an outer peripheral surface of the lightguide plate, and a reflecting sheet is disposed on a lower surface of the frame. The frame is formed such that an inside frame portion is made of a white resin and an outside frame portion is made of a black resin. The inside frame portion and the outside frame portion are integrally molded by a two-color molding method.
    Type: Application
    Filed: August 19, 2014
    Publication date: December 4, 2014
    Applicant: OMRON Corporation
    Inventors: Kenji Ozawa, Kensuke Nambu, Yuichi Hiraki
  • Patent number: 8902379
    Abstract: Disclosed are a display device and a method for manufacturing an optical member. The display device includes a light source; a plurality of wavelength conversion particles to convert a wavelength of a light generated from the light source; and a tube to receive the wavelength conversion particles, wherein a scattering pattern is formed on at least one surface of the tube.
    Type: Grant
    Filed: October 14, 2011
    Date of Patent: December 2, 2014
    Assignee: LG Innotek Co., Ltd.
    Inventor: Seung Ryong Park
  • Patent number: 8900025
    Abstract: A liquid crystal display device including a a panel having a liquid crystal layer, and a backlight unit coupled to the panel, for irradiating light to the panel, wherein the backlight unit includes a light source, a light guide plate configured to guide light emitted from the light source to the panel, and a fill spacer in a gap between the light source and a light-incident surface of the light guide plate, the fill spacer including a UV curable material or a thermoplastic elastic material.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: December 2, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventor: Hyun-Shik Lee
  • 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: 8902381
    Abstract: The present invention provides a backlight module comprises a waveguide, a reflector, and elastic members. Wherein the elastic members are used to arranged on corners of the waveguide, and the reflector is arranged on a side of the waveguide facing the elastic members. And wherein each of the elastic members is provided with a slot in a surface facing the reflector, and the reflector is provided with tabs corresponding to each of the slots so as to be securely received within the slots. The present invention further provides a liquid crystal display device incorporated with such a backlight module. By this arrangement, the backlight module become more reliable, and more suitable for narrow-boarder design. The utilization of the reflector is also enhanced.
    Type: Grant
    Filed: October 15, 2012
    Date of Patent: December 2, 2014
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventors: Yu-chun Hsiao, Quan Li
  • Publication number: 20140347603
    Abstract: A light guide plate includes an optically effective portion and an optical coupling portion adjoining the optically effective portion. The optically effective portion includes a first bottom surface, a light output surface opposite to the first bottom surface, and a side surface connected between the first bottom surface and the light output surface. The optical coupling portion includes a second bottom surface, a first light incident surface opposite to the side surface, a second light incident surface, a first connecting surface, and a second connecting surface. The second bottom surface is coplanar with the first bottom surface. The second light incident surface extends from the first light incident surface away from the side surface. The first connecting surface extends from the second light incident surface toward the side surface. The second connecting surface is connected between the first connecting surface and the light output surface.
    Type: Application
    Filed: October 29, 2013
    Publication date: November 27, 2014
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: CHEN-HAN LIN
  • Publication number: 20140347606
    Abstract: Disclosed is a transparent display device including a light guide plate formed with a plurality of concave patterns at the lower surface thereof to totally reflect polarized light entered in a lateral direction while transmitting natural light entered from a lower direction therethrough; a light source disposed in a lateral direction of the light guide plate to emit visible light including first and second polarized lights; a first polarizing plate disposed at a lateral portion of the light guide plate to transmit either one of the first and second polarized lights through the light guide plate; a liquid crystal panel for driving liquid crystals to change the phase of the polarized light; and a second polarizing plate for controlling an amount of the polarized light according to the changed phase of the polarized light.
    Type: Application
    Filed: August 13, 2014
    Publication date: November 27, 2014
    Inventors: Se-Hong PARK, Jong-Sin PARK
  • Publication number: 20140347605
    Abstract: A backlight module is disclosed. The backlight module includes an ambient light collector for collecting ambient lights, at least one optical fiber connecting to the ambient light collector, a light emitting plate arranged closely to an optical plate, at least one fixing sleeve being received in the through hole, and at least one optical fiber sleeve. The light emitting plate includes a plurality of through holes. The optical fiber sleeve is fixed within the fixing sleeve and engages with the light emitting ends of the optical fibers to fix the optical fibers on the light emitting plate. The backlight module utilizes the ambient lights as light source. In addition, by cutting the light emitting end of the optical fibers, the light emitting angle of the lights are greatly enlarged. As such, the brightness difference is decreased and the display performance is enhanced.
    Type: Application
    Filed: June 27, 2013
    Publication date: November 27, 2014
    Inventors: Yongyuan Qiu, Yong Fan
  • Patent number: 8896783
    Abstract: The present invention provides a frameless liquid crystal display device, which includes a rear enclosure, a backlight module arranged inside the rear enclosure, a mold frame arranged on the backlight module and fixedly coupled to the rear enclosure, a liquid crystal display panel arranged on the mold frame, and a surface decoration arranged at a lower end of the liquid crystal display panel and mounted to the mold frame. The liquid crystal display panel is coupled to the mold frame by coupling sections, each of which includes a rectangular plate, an engagement section, and a connection section that connects the rectangular plate and the engagement section. The mold frame forms retention slots corresponding to the coupling sections and each of the retention slots including first and openings and a channel communicating with the first and second openings. The first opening is greater than the second opening.
    Type: Grant
    Filed: August 30, 2012
    Date of Patent: November 25, 2014
    Assignee: Shenzhen China Start Optoelectronics Technology Co., Ltd.
    Inventors: Gang Yu, Liuyang Yang, Pei Jia
  • Patent number: 8896786
    Abstract: A liquid crystal display device has brightness uniformity at its front and lateral sides. 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. The prism pattern extends in a second direction substantially perpendicular to the first direction. The average height is in a range of about 0.1% to about 10% of the thickness of the substrate.
    Type: Grant
    Filed: September 16, 2009
    Date of Patent: November 25, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jeong-Min Seo, Jee-Hong Min, Young-Chan Kim, Moon-Gyu Lee, Kyu-Seok Kim
  • Patent number: 8896787
    Abstract: A light-emitting assembly includes a light guide plate (LGP), a first infrared light-emitting part, a second infrared light-emitting part and a visible light-emitting part. The LGP has printed circuit patterns formed on a lower surface thereof. The first infrared light-emitting part includes a plurality of first infrared light-emitting diodes (LEDs) disposed at a first side of the LGP and spaced apart by intervals having different sizes. The second infrared light-emitting part includes a plurality of second infrared LEDs disposed at a second side of the LGP and spaced apart by intervals having different sizes. The visible light-emitting part includes a plurality of visible LEDs disposed at a third side of the LGP and spaced apart by intervals having different sizes, so that infrared light and visible light that is emitted from the two different kinds of light sources may be uniformly provided to a touch screen panel.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: November 25, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Joong-Hyun Kim, Dong-Kwon Kim, Min-Young Song
  • Patent number: 8894265
    Abstract: The light guide plate includes a light guide plate body and a first medium, wherein the refractive index of the light guide plate body is greater than the refractive index of the first medium. The light guide plate body includes a plurality of gaps parallel with each other, wherein the first medium is disposed in those gaps. The light guide plate body further includes a light entrance end, wherein the gaps extend in directions both away and toward the light entrance end. Furthermore, an active region is defined on the light guide plate body and the gaps are located in the active region.
    Type: Grant
    Filed: October 14, 2011
    Date of Patent: November 25, 2014
    Assignee: AU Optronics Corporation
    Inventors: Wei-Tien Chang, Kuang-Tao Sung
  • Patent number: 8896782
    Abstract: The present invention provides a frameless liquid crystal display device, which includes a rear enclosure, a backlight module arranged inside the rear enclosure, a mold frame arranged on the backlight module and fixedly coupled to the rear enclosure, and a liquid crystal display panel arranged on the mold frame. The liquid crystal display panel includes a CF substrate and a TFT substrate laminated on the CF substrate and a top polarization plate and a bottom polarization plate respectively laminated to the CF substrate and the TFT substrate. The top polarization plate is a flexible polarization film having an upper end coupled to the mold frame so as to fix an upper end of the liquid crystal display panel to the mold frame. The liquid crystal display panel forms a step on which a surface decoration is positioned to fix to the mold frame.
    Type: Grant
    Filed: August 30, 2012
    Date of Patent: November 25, 2014
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventors: Gang Yu, Liuyang Yang, Pei Jia
  • Publication number: 20140340586
    Abstract: This backlight device (illumination device) (12) is provided with: a plurality of LEDs (light sources) (17) arranged in a row at intervals; a light-guide plate (16) having a light-receiving surface (16b) that is arranged opposing the LEDs (17) and that receives light from the LEDs (17) and a light-emitting surface (16a) from which the light that entered is emitted; a reflective sheet (reflective member) (20) arranged so as to cover the surface of the light-guide plate (16) opposite to the light-emitting surface (16a) and that reflects light toward the light-emitting surface (16a); and an extended reflective part (26) provided in an edge portion of the reflective sheet (20), the extended reflective part (26) extending toward the LEDs (17) from the light-receiving surface (16b), the extended reflective part (26) having openings (27) formed therein that correspond to the arrangement pattern of the LEDs (17), thereby being arranged corresponding to the non-arrangement pattern where the LEDs (17) are not provided.
    Type: Application
    Filed: September 7, 2012
    Publication date: November 20, 2014
    Applicant: SHARP KABUSHIKI KAISHA
    Inventor: Kentaro Terashima
  • Patent number: 8891040
    Abstract: A liquid crystal display device (100) of the present invention includes an edge light type backlight unit (10) and a liquid crystal panel (20). The backlight unit (10) includes a light guide plate (2) and a light source (1) that emits light to a light entrance end surface (2a) of the light guide plate (2). An opposite end surface (2b), of the light guide plate (2), which is opposite to the light entrance end surface (2a), is shaped to have one or more triangular shape(s) or one or more rounded shape(s) in a cross section both in a thickness direction of the light guide plate (2) and in a peak luminance direction of light from the light source (1). Light parallel to the peak luminance direction, which light is from the light source (1), is suitably reflected without being scattered by an inclined surface of the opposite end surface (2b).
    Type: Grant
    Filed: February 23, 2011
    Date of Patent: November 18, 2014
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yoshinobu Hirayama, Shigenori Tanaka, Ryoh Araki
  • Patent number: 8890797
    Abstract: A display device includes an illuminance sensor for detecting an illuminance in a surrounding environment, an input average luminance detection circuit for detecting an average luminance of input images, a frame insertion control circuit for producing a gray image frame and inserting the produced gray image frame into between an input image frame and its subsequently input image frame input, and an insertion luminance level generation circuit for determining a luminance of the gray image frame according to the illuminance detected by the illuminance sensor and the average luminance of the input images detected by the input average luminance detection circuit.
    Type: Grant
    Filed: February 22, 2012
    Date of Patent: November 18, 2014
    Assignee: OPTREX Corporation
    Inventor: Kenji Gondo
  • Patent number: 8891039
    Abstract: A display module includes a display panel configured to display an image and a backlight. The backlight includes a light guide panel configured to guide light to the display panel, a light source element configured to supply light to the light guide panel, and a reflection sheet disposed over the light guide panel, wherein a chromaticity compensation layer is formed in the backlight unit. The chromaticity compensation layer formed in the backlight reduces yellowing.
    Type: Grant
    Filed: August 10, 2011
    Date of Patent: November 18, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventor: Se-In Chang
  • Patent number: 8891038
    Abstract: Lightguide is disclosed. The lightguide includes a light guiding layer for propagating light by total internal reflection, and an optical film that is disposed on the light guiding layer. The optical film includes a plurality of voids, an optical haze that is not less than about 30%, and a porosity that is not less than about 20%. Substantial portions of each two neighboring major surfaces in the lightguide are in physical contact with each other.
    Type: Grant
    Filed: April 14, 2010
    Date of Patent: November 18, 2014
    Assignee: 3M Innovative Properties Company
    Inventors: William D. Coggio, John A. Wheatley, Tao Liu, Brian W. Ostlie, Encai Hao, William Blake Kolb, Qingbing Wang, Michael Benton Free, Michael L. Steiner, Scott M. Tapio
  • Patent number: 8885118
    Abstract: It is an object of the invention to provide a technique capable of suppressing variations in luminance in the vicinity of a light entrance surface of a light guide plate. An illumination device includes a point light source, and a light guide plate having a side surface serving as a light entrance surface opposed to the point light source, and a main surface serving as a light exit surface. The light entrance surface of the light guide plate is provided with unevenness formed by arraying at predetermined pitches a plurality of protrusions each projecting from the light entrance surface and extending in a direction perpendicular to the light exit surface. Each of the top surface and the bottom surface of the unevenness is provided with a plurality of micro protrusions each extending in the direction perpendicular to the light exit surface and having a height smaller than the above protrusion.
    Type: Grant
    Filed: November 16, 2011
    Date of Patent: November 11, 2014
    Assignee: Mitsubishi Electric Corporation
    Inventors: Akimasa Yuuki, Kenji Itoga, Naoko Iwasaki, Takafumi Kokusho, Yuji Tsuchiyama, Seiji Sakai
  • Patent number: 8885119
    Abstract: A backlight assembly of a Liquid Crystal Display (LCD) is provided with improved heat dissipation capabilities. The improved dissipation capabilities come from one or more light-sourcing unit fixing frames that have extensions which protrude to outside a housing that houses light sourcing units of the LCD. The light-sourcing unit fixing frames mechanically interlock with the housing.
    Type: Grant
    Filed: March 6, 2014
    Date of Patent: November 11, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Cheol Yong Noh, Jae Chang Choi, Seong Sik Choi
  • Publication number: 20140327859
    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: Application
    Filed: July 17, 2014
    Publication date: November 6, 2014
    Inventors: Yoichi MOMOSE, Nobutaka URANO
  • Publication number: 20140329579
    Abstract: A game console includes: a liquid crystal display device comprising a backlight unit and a liquid crystal panel which is disposed in front of the backlight unit; and at least one reel which is disposed behind the backlight unit and where a plurality of symbols are displayed. The backlight unit includes: a light guiding panel; a light source which is disposed in the vicinity of the light guiding panel; and a polymer dispersed liquid crystal layer which is disposed behind the light guiding panel and is formed to be selectively converted to be transparent or non-transparent depending on whether an electricity is applied thereto or not. The polymer dispersed liquid crystal layer is at least partially overlapped with the light guiding panel in a forward/rearward direction and is separately formed to have a predetermined pattern.
    Type: Application
    Filed: November 6, 2012
    Publication date: November 6, 2014
    Applicant: TOVIS CO., LTD.
    Inventor: Yong-Beom Kim
  • Patent number: 8879025
    Abstract: A transparent display device for enhancing optical transmissivity in a transparent mode, is discussed. The transparent display device may include a liquid crystal panel; a light source disposed at one side of a lower portion of the liquid crystal panel to emit light; a first polarizing plate for polarizing the light emitted from the light source; a light guide plate disposed at a lower portion of the liquid crystal panel to totally reflect the light polarized to an axis by the first polarizing plate to a lateral surface thereof and supply to the liquid crystal panel, and transmit natural light entered from a lower direction therethrough; and a second polarizing plate disposed at an upper portion of the liquid crystal panel to control the amount of polarized light passing through the liquid crystal panel.
    Type: Grant
    Filed: December 7, 2010
    Date of Patent: November 4, 2014
    Assignee: LG Display Co., Ltd.
    Inventors: Jong-Sin Park, Eung-Do Kim, Se-Hong Park, Kyung-Ha Lee
  • Patent number: 8879019
    Abstract: A liquid crystal display apparatus including: a liquid crystal panel which includes a device substrate, a counter substrate arranged to face the device substrate, and a protruded section in which the device substrate protrudes from an end portion of the counter substrate; a lighting system which includes an optical sheet arranged on a side which is opposite a light emission side of the liquid crystal panel; and a first frame portion which supports an edge of the protruded section of the device substrate and includes a protruded plate section that protrudes between the device substrate and the optical sheet, wherein the first frame portion includes a first stage section which faces a side end surface of the device substrate and a second stage section which is arranged between an edge of the protruded plate section and the first stage and which faces an outline side of the optical sheet.
    Type: Grant
    Filed: August 2, 2012
    Date of Patent: November 4, 2014
    Assignee: Seiko Epson Corporation
    Inventors: Nobutaka Urano, Yoichi Momose
  • Patent number: 8879028
    Abstract: The LCD sequentially comprises, from bottom to top, a backlight module, a first polarizer, a first substrate, a liquid crystal layer, a second substrate, and a second polarizer. The second substrate comprises plural transparent areas thereon. The first substrate comprises plural light-focusing arrays. Each of the light-focusing arrays comprises plural high-refractive areas and low-refractive areas disposed between the high-refractive areas. The plural high-refractive areas comprises a first high-refractive area and plural second high-refractive area disposed on two sides of the high-refractive areas symmetrically, wherein the widths of the second high-refractive areas are the same and smaller than the width of the first high-refractive area.
    Type: Grant
    Filed: July 28, 2011
    Date of Patent: November 4, 2014
    Assignee: AU Optronics Corporation
    Inventors: Pei-Hsun Wu, Ying-Che Lan, Chih-Haw Wang, Szu-Han Li, Keng-Ju Liu
  • Patent number: 8879026
    Abstract: An electronic device is provided. The electronic device includes a light source, a light guide, a display unit and a frame. The light source provides a light beam. The light guide includes a light emitting surface and a light entering surface, wherein the light beam enters the light guide through the light entering surface, and is emitted from the light emitting surface. The display unit is corresponding to the light emitting surface, wherein the light beam is partially emitted from the light guide, passes through the display unit to display an image. The frame covers the display unit and the light guide, wherein the frame has a display portion and a transparent portion, the image is displayed in the display portion, and the light beam is partially emitted from the light guide toward the transparent portion and passes through the transparent portion.
    Type: Grant
    Filed: April 3, 2014
    Date of Patent: November 4, 2014
    Assignee: Wistron Corp.
    Inventors: Wen-Chin Wu, Chih-Kang Chen, Kuo-Hsing Wang
  • Patent number: 8879022
    Abstract: Disclosed is a liquid crystal display (LCD) device capable of stable support of components. The LCD device comprises an LCD panel; a main support for supporting edges of the LCD panel; a light guide plate disposed at a rear side of the LCD panel; and at least one first pad for preventing the movement of the light guide plate through contact with the light guide plate between the main support and the light guide plate, wherein at least one first pad supporting portion is formed at one surface of the main support being faced with the light guide plate. Accordingly, defects of the LCD device resulting from an external force such as impact or heat are minimized, and the LCD device has a firm and stable structure.
    Type: Grant
    Filed: December 31, 2007
    Date of Patent: November 4, 2014
    Assignee: LG Display Co., Ltd.
    Inventor: Guen-Taek Oh
  • Publication number: 20140320785
    Abstract: A backlight device wherein LEDs which are arranged side by side at a first arrangement interval (P1) are provided to each LED unit. The LED units are mounted to a flexible board at a second arrangement interval. A light guide plate is disposed in such a manner that an end surface thereof is spaced from the LEDs by a distance (H). The light guide plate is disposed so as to satisfy the following relationship: first arrangement interval (P1)<distance (H)<second arrangement interval (P2). Specifically, the LEDs are arranged side by side in such a manner that the first arrangement interval (P1) is not less than 0.1 mm but not greater than 3 mm and the second arrangement interval (P2) is not less than 5 mm but not greater than 15 mm. The light guide plate is disposed in such a manner that the distance (H) is not less than 1 mm but not greater than 7 mm.
    Type: Application
    Filed: July 10, 2014
    Publication date: October 30, 2014
    Inventors: Naoto Hirohata, Yasuhiro Ueki, Nobuyoshi Yamagishi, Takuya Kakinuma, Mikio Okumura
  • Publication number: 20140320747
    Abstract: The backlight device (24) is provided with a bottom plate (22a), a light-guide plate (20) that has a light-receiving face (20a) on a side face and that is arranged such that the back surface of the plate is oriented to face the front of the bottom plate (22a), an LED light-source (28) that is arranged opposite to the light-receiving face (20a) on the front surface of the bottom plate (22a), a reflective sheet (26) that is arranged to be in contact with the bottom surface of the light guide plate (20), a protruding member (38) that is formed so as to protrude from the front surface of the bottom plate (22a) and that has, as top surfaces, a first surface (38a) provided so as to contact the surface of the reflective sheet (26) on the side opposite of the bottom plate and a second surface (38b) that is separated from the first surface (38a) by a step (38c) and that, between the light-receiving face (20a) and the LED light source (28), is higher than the back surface of the light guide plate (20).
    Type: Application
    Filed: September 28, 2012
    Publication date: October 30, 2014
    Applicant: SHARP KABUSHIKI KAISHA
    Inventor: Kentaro Kamada
  • Publication number: 20140320784
    Abstract: Disclosed is a display device having a slim and narrow structure. The display device comprises a liquid crystal panel; a light source for providing light to the liquid crystal panel; a light guide of a glass material, wherein the light source is combined with one side of the light guide; a reflector formed on at least one of both surfaces of the light guide; and an adhesive member formed on one surface of the light guide confronting the liquid crystal panel, and provided to attach the liquid crystal panel and the light guide to each other.
    Type: Application
    Filed: December 30, 2013
    Publication date: October 30, 2014
    Applicant: LG Display Co., Ltd.
    Inventors: Young Min Kweon, Young Nam Lee, Chang Soo Jang, Du-Ho Jo
  • Patent number: 8872999
    Abstract: A backlight assembly includes a light source, a light guide plate configured to receive and diffuse light emitted from the light source, and a mold frame including a central opening part configured to receive the light guide plate, an attachment opening part adjacent to the central opening part, the attachment opening part being configured to receive the light source, and a protrusion in the attachment opening part, the protrusion contacting the light source in the attachment opening.
    Type: Grant
    Filed: November 17, 2010
    Date of Patent: October 28, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Min-Seop Kim, Yun-Jae Kim, Hwan-Jin Kim
  • Patent number: 8872994
    Abstract: The present invention discloses a backplane of liquid crystal display (LCD) device, back light module and LCD device. A backplane of LCD device comprises a mainboard; wherein, the side of the mainboard is provided with a shield on the rubber frame corresponding to the LCD device. The present invention extends the backplane of LCD device and covers exposed part of rubber frames. Because the backplane of LCD device has an intensity which is significantly higher than that of rubber frames and is not easily damaged during handling, the aim of protecting rubber frames and source pcbs is achieved. However, because the backplane of LCD device is adjacent to rubber frames, shields can be added directly in the backplane of LCD device. The process is simple and can minimize use of material for covering.
    Type: Grant
    Filed: October 27, 2011
    Date of Patent: October 28, 2014
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventor: Gege Zhou
  • Publication number: 20140313457
    Abstract: The invention provides a backlight module, including: an optical plate and an optical film, wherein at least one edge of optical film being disposed with a protruding ear, protruding ear having a via hole; backlight module further comprising at least a hanging element; wherein a side of the optical plate corresponding to edge of optical film with protruding ear being fixedly connected to hanging element; optical film being disposed on top of optical plate and via hole hanging on hanging element so as to fasten optical film. The backlight module improves the fix reliability of optical plate and prevents from arching up caused by thermal expansion. Because optical plate and optical film expand simultaneously due to heat, the wavy curve of the optical film is avoided and optical quality is improved. The present invention also discloses a liquid crystal display device with the backlight module.
    Type: Application
    Filed: June 25, 2013
    Publication date: October 23, 2014
    Applicant: Shenzhen China Star Optolectronics Technology Co., Ltd.
    Inventors: Yuchun Hsiao, Chong Huang
  • Patent number: 8864361
    Abstract: A backlight unit includes: a wiring board having a light source mounted thereon; a light guide plate; a light-shielding pressure-sensitive adhesive sheet; and a light diffusion sheet. The front surface of the light guide plate includes an effective region serving as the planar light source and a light entering region ranging from the end surface into which the light enters to the effective region. The wiring board and the light-shielding pressure-sensitive adhesive sheet each have a part positioned in the light entering region. The light diffusion sheet is arranged from the effective region to the light entering region, and overlaps with the light-shielding pressure-sensitive adhesive sheet in the light entering region. On a side closer to the effective region with respect to the light-shielding pressure-sensitive adhesive sheet, the light entering region is covered with the light diffusion sheet without a gap.
    Type: Grant
    Filed: August 13, 2012
    Date of Patent: October 21, 2014
    Assignee: Japan Display Inc.
    Inventors: Munenori Motooka, Nobuyuki Suzuki
  • 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
  • Patent number: 8866992
    Abstract: A mobile terminal including a wireless communication unit configured to wirelessly communicate with at least one other terminal; a display panel configured to display information; a plurality of light source parts spaced apart from each other and configured to output light; a light guide plate provided under the display panel and configured to guide the light output by the light source parts to the display panel; and a quantum dot filter part including a light entrance plane to which light is input and a light exit plane from which the light is wavelength-transformed and discharged. Further, at least one of the light entrance plane and the light exit plane of the quantum dot filter part includes a surface having a predetermined shape characteristic configured to increase an amount of the light input on and passed through the light entrance plane and to increase an amount of the light discharged from the light exit plane.
    Type: Grant
    Filed: June 20, 2012
    Date of Patent: October 21, 2014
    Assignee: LG Electronics Inc.
    Inventors: Jeongho Kim, Anna Yoo, Soowook Jang
  • Publication number: 20140307204
    Abstract: A display device includes a display panel, a light source that emits light, a light guide plate comprising a lateral surface that receives the light, wherein the light source emits the light to the lateral surface from a main surface to a back surface of the display panel, a supporting member provided between a peripheral portion of the display panel and a peripheral portion of the light guide plate and that supports the peripheral portion of the display panel, a reflective sheet disposed so as to cover a back surface on an opposite side of the main surface of the light guide plate and that comprises an opening at a position corresponding to the peripheral portion of the light guide plate, and a back surface enclosure disposed so as to oppose the reflective sheet and that includes a first fixing part and a second fixing part.
    Type: Application
    Filed: April 10, 2014
    Publication date: October 16, 2014
    Applicant: Funai Electric Co., Ltd.
    Inventors: Kodai Nakano, Tatsuji Sudo
  • Publication number: 20140307205
    Abstract: An optical film according to one embodiment includes at least one stack having a plurality of basic pairs, each pair being composed of a first layer and a second layer having different refractive indices and being laminated. The number of the stacks, a difference in the refractive index between the first and second layers, and the number of the basic pairs are set such that a reflectance spectrum of the at least one stack as a whole matches a target reflectance spectrum. The target reflectance spectrum includes first and second reflectance spectrum components corresponding to first and second polarized light beams in a predetermined wavelength range, wherein each of them is a spectrum having at least one reflective peak region including a spectrum region having a reflectance of 50% or more and a wavelength width of 20 to 60 nm.
    Type: Application
    Filed: November 12, 2012
    Publication date: October 16, 2014
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventor: Saswatee Banerjee
  • Publication number: 20140307175
    Abstract: A lighting device 10 according to this invention includes a light guide plate 16, a reflection sheet 21, and a light source unit LU. The light guide plate 16 is a plate-like member and includes a light entrance surface 16c through which light enters and a light exit surface 16a through which the light in the light guide plate 16 from the light entrance surface 16c exits. The reflection sheet 21 is arranged such that a front surface 21a thereof is on a rear plate surface 16b of the light guide plate 16 and such that an end portion 211 of the reflection sheet 21 is located more to an outer side than the light entrance surface 16c. The light source unit LU includes a light source board 18, a plurality of light sources 17, and a connector 19A configured to relay an electric power supply to the light sources 17.
    Type: Application
    Filed: November 15, 2012
    Publication date: October 16, 2014
    Applicant: Sharp Kabushiki Kaisha
    Inventor: Hidekazu Oka
  • Publication number: 20140307203
    Abstract: A liquid crystal display device including a liquid crystal panel in a display area and a non-display area; a plurality of optical sheets under the liquid crystal panel; a light guide plate under the optical sheets; a light source configured to apply light to the light guide plate; and a support main connected to the liquid crystal panel, the optical sheets and the light guide plate and including a first support guide in back of the liquid crystal panel; a second support guide in back of the optical sheets and extending from a side surface of the first support guide; and a third support guide extending from a side surface of the second support guide. An inside portion of the third support guide is narrower than an outside portion of the third support guide.
    Type: Application
    Filed: December 19, 2013
    Publication date: October 16, 2014
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Dong Im HUO, Sang Mo YANG, Kyoung Tae KIM, Dong Geun LEE
  • Patent number: 8860909
    Abstract: Disclosed is a transparent display device in which the total refection efficiency of a light guide plate supplying light to a liquid crystal display panel is enhanced thereby enhancing luminance in the image mode, and the transparent display device may include a liquid crystal display panel; a light source disposed at one side of a lower portion of the liquid crystal display panel to emit light; a first polarizing plate for polarizing the light emitted from the light source; a light guide plate disposed at a lower portion of the liquid crystal display panel to totally reflect the light polarized to an axis by the first polarizing plate to a lateral surface thereof and supply to the liquid crystal display panel, and transmit natural light entered from a lower direction therethrough; a plurality of air layers formed inside the light guide plate to totally reflect incident light; and a second polarizing plate disposed at an upper portion of the liquid crystal display panel to control the amount of polarized ligh
    Type: Grant
    Filed: December 13, 2010
    Date of Patent: October 14, 2014
    Assignee: LG Display Co., Ltd.
    Inventors: Eung-Do Kim, Se-Hong Park
  • Patent number: 8860906
    Abstract: Directional light guide plates, directional surface light sources, and three-dimensional (3D) image display apparatuses employing the directional surface light sources are provided. Each of the directional light guide plates includes a plurality of viewing zone separation units having a refractive index different from that of a light guide unit, for separating light into left and right viewing zones.
    Type: Grant
    Filed: October 31, 2011
    Date of Patent: October 14, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kyu-hwan Choi, Hong-seok Lee, Byung-hee Sohn, Yong-kweun Mun
  • Patent number: 8860908
    Abstract: A backlight unit having improved luminance and uniformity includes a light source and a light guide panel having a light receiving portion which receives light emitted from the light source and which has a pattern including a plurality of protrusions. Each of the protrusions has inclined surfaces forming an angle with respect to the tangential direction of the light receiving portion. The inclined surfaces include a first inclined surface relatively close to the center of the light receiving portion and a second inclined surface relatively close to the edge of the light receiving portion. A first inclination angle formed by the first inclined surface with respect to the tangential direction of the light receiving portion is smaller at the edge of the light receiving portion than at the center of the light receiving portion.
    Type: Grant
    Filed: November 29, 2010
    Date of Patent: October 14, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Seung-Mock Ro, Young-Min You, Won-Il Lee, Nam-Jin Jang, Joo-Young Lee
  • Patent number: 8860910
    Abstract: The present invention provides a backlight module and a display apparatus. The display apparatus comprises the backlight module and a display panel. The backlight module comprises a light collector, at least one optical fiber bundle, a fiber light-outputting substrate, a light guide plate and a fiber holding plate. The optical fiber bundle is connected between the light collector and the fiber light-outputting substrate. The light guide plate is disposed at one side of the fiber light-outputting substrate, and the fiber holding plate is configured to hold optical fibers of the optical fiber bundle. The present invention can use ambient light rays to form a backlight source.
    Type: Grant
    Filed: November 22, 2012
    Date of Patent: October 14, 2014
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventors: Shih Hsiang Chen, Li-Yi Chen, Dehua Li, Guofu Tang
  • Patent number: 8860902
    Abstract: A display device includes an integrated liquid crystal display and a backlight unit. The liquid crystal display is provided with a backlight system that includes a light-emitting element positioned along one or more sides of the display. In order to efficiently distribute and dissipate the heat produced by the light-emitting element, the backlight cover can cover the light-emitting elements and the area over the liquid crystal display. For shielding, the backlight cover can separate the display from an electronic circuit assembly. The backlight cover may be made monolithically of a heat-conductive material such as aluminum, as well as an electro-conductive material for shielding. The backlight cover may also provide mechanical support for the display device and mounting features to ease assembly and mounting to a target location. Such a display device may be deployed on a vehicle, for instance, as part of a vehicle navigation, communication, and/or entertainment system.
    Type: Grant
    Filed: December 13, 2010
    Date of Patent: October 14, 2014
    Assignee: Harman Becker Automotive Systems GmbH
    Inventor: Guenter Tabor
  • Publication number: 20140300845
    Abstract: According to an aspect, a display device includes: a display surface on which pixels each including sub-pixels of a plurality of colors are two-dimensionally arrayed; a reflective member; a first substrate provided with the reflective member; a second substrate arranged to face the first substrate; a color filter provided with filters of at least two colors corresponding to the sub-pixels; and a scattering member provided on the second substrate. A main viewing angle direction of the display device is a direction intersecting with the display surface. The color filter is formed such that a change in transmittance of the filters per pixel in the main viewing angle direction is smaller than a change in transmittance of the filters per pixel in a direction orthogonal to the main viewing angle direction in a direction parallel to the display surface.
    Type: Application
    Filed: March 21, 2014
    Publication date: October 9, 2014
    Applicant: Japan Display Inc.
    Inventors: Masaya TAMAKI, Yoko FUKUNAGA, Masashi MITSUI, Susumu KIMURA
  • 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: 8854573
    Abstract: An electronic device including a display is provided. The display displays a received information content, and the information content has a horizontal direction. The display has a horizontal direction parallel to the information content's horizontal direction. The display includes a display panel, a backlight module and a first polarization unit. The backlight module is disposed at a side of the display panel, wherein the backlight module includes a horizontal prism sheet. The horizontal prism sheet includes a plurality of first prisms, wherein top angles of the first prisms are larger than or equal to 80 degrees and are smaller than 90 degrees. The display panel is located between the first polarization unit and the backlight module. A first angle between a transmission axis of the first polarization unit and the horizontal direction of the display is larger than 45 degrees and smaller than 135 degrees.
    Type: Grant
    Filed: December 14, 2012
    Date of Patent: October 7, 2014
    Assignee: Compal Electronics, Inc.
    Inventors: Tien-Hung Hou, Mei-Hsiung Tsai
  • Publication number: 20140293136
    Abstract: An illumination device 12 includes a light source 17; a light guide plate 16 having a light-receiving face 16b and a light-exiting surface 16a; a chassis 14 having a body 141 covering a rear surface 16c of the light guide plate 16, a strip-shaped projecting part 142 projecting beyond the light-receiving face 16b, and a straight edge 143 extending in a straight line parallel with the light-receiving face 16b; a light source support member 19 having a support part 191 supporting the light source 17, and an attachment part 192 having an edge 193 that extends beyond the straight edge 143 of the chassis 14 and that extends in a straight line parallel with this straight edge 143, the attachment part 192 being attached to the front side of the projecting part 142; a screw 21 penetrating the projecting part 142 and the attachment part 192 from the rear side of the projecting part 142; and a screw-receiving part 131 that clamps the projecting part 142 and the like between the screw 21 and the screw-receiving part 131
    Type: Application
    Filed: October 19, 2012
    Publication date: October 2, 2014
    Applicant: SHARP KABUSHIKI KAISHA
    Inventor: Hirokazu Mouri
  • 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