Fluorescent Light Source Patents (Class 349/70)
  • Patent number: 10809605
    Abstract: An optical projection screen and a management system thereof are provided. The optical projection screen comprises an LED display module, a cooling module and an optical projection curtain. The optical projection curtain adheres to the LED display module with optical UV glue and is disposed on the light-emitting side of the LED display module. The cooling module is disposed on the backlight side of the LED display module and comprises a plurality of cooling assemblies distributed in different areas and used for cooling different areas of the LED display module. Each cooling assembly comprises a semiconductor refrigeration module, a temperature sensor and an intelligent switch. The intelligent switches control on-off of the semiconductor refrigeration modules according to the temperature detected by the temperature sensors. Multiple modules can be spliced to achieve large-screen display.
    Type: Grant
    Filed: November 2, 2018
    Date of Patent: October 20, 2020
    Assignee: XIAMEN RIBEEN ELECTRONIC TECHNOLOGY CO., LTD.
    Inventors: Zhanhan Chen, Qingjun Li
  • Patent number: 10665139
    Abstract: One embodiment of a light emitting diode (LED) lighting device comprises multiple LED light sources disposed on multiple elongated circuit boards, with each LED light source being electrically connected to one of the circuit boards. The elongated circuit boards are electrically coupled using electrical passageways to provide power to the circuit boards at intervals along the length of the elongated circuit boards, and the light sources disposed on the circuit boards emit light in the same direction perpendicular to the elongated circuit boards. The electrical passageways can be wires or groups of wires.
    Type: Grant
    Filed: November 6, 2019
    Date of Patent: May 26, 2020
    Assignee: Bitro Group, Inc.
    Inventor: Ki S. Lee
  • Patent number: 10627674
    Abstract: The present disclosure relates to a backlight unit and a liquid crystal display device. The liquid crystal display device includes a display panel including a red pixel, a green pixel, and a blue pixel; and a backlight unit which emits light to the display panel, wherein the backlight unit includes: a light source providing a first color light; a color conversion layer disposed on the light source and converting a part of the first color light into a second color light; an optical sheet between the display panel and the color conversion layer; and an air gap between the color conversion layer and the optical sheet.
    Type: Grant
    Filed: September 25, 2018
    Date of Patent: April 21, 2020
    Assignee: LG Display Co., Ltd.
    Inventors: Je-Beom Park, Ji-Su Yoon, Min-Jae Kang, Kyu-Hwan Lee
  • Patent number: 10613374
    Abstract: A back light module and a liquid crystal display apparatus are provided A back light module has a conductive frame, connected electrically to a reference voltage input terminal; a sealant frame displaced inside the conductive frame, wherein the sealant frame has a bottom surface adhered to a top surface of the conductive frame; a support structure displaced above the top surface of the conductive frame along the inside edges of the sealant frame; and a plurality of optical films disposed over the conductive film and being supported by the support structure. The plurality of optical films includes an upper brightness enhancement film, a lower brightness enhancement film, a diffuser film, a light guide plate; and a reflector film.
    Type: Grant
    Filed: June 6, 2017
    Date of Patent: April 7, 2020
    Assignees: XIAMEN TIANMA MICRO-ELECTRONICS CO., LTD., TIANMA MICRO-ELECTRONICS CO., LTD.
    Inventor: Tianxu Xie
  • Patent number: 10606119
    Abstract: The application discloses a color filter substrate, an array substrate, a display panel and a display device. The color filter substrate comprises a first base substrate and a plurality of pixel units provided above the first base substrate, each of the pixel units comprising color filters of various colors; from a pixel unit close to a first side of the first base substrate towards a pixel unit close to a second side of the first base substrate opposite to the first side, a ratio of an area of a color filter of a specific color to that of any one of color filters of other colors is increased gradually. In the application, the color filter of the specific color is able to compensate for the color shift of the light guide plate, alleviating the color shift of the display device, and thereby improving the image quality of the display device.
    Type: Grant
    Filed: September 25, 2017
    Date of Patent: March 31, 2020
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE DISPLAY TECHNOLOGY CO., LTD.
    Inventors: Kun Lu, Shiqing Ma, Ling Bai, Hui Zhang
  • Patent number: 10527888
    Abstract: A liquid crystal display panel and a liquid crystal display device are disclosed. The liquid crystal display panel includes a color film substrate, an array substrate disposed to face the color film substrate, and a blue backlight disposed on a side of the array substrate away from the color film substrate. The color film substrate includes a base substrate, red quantum dot blocks, green quantum dot blocks and blue light blocks disposed on the substrate. The color film substrate further includes a yellow light layer disposed between the red quantum dot blocks and the base substrate, and also between the green quantum dot blocks and the base substrate. The yellow light layer in the liquid crystal display panel of the present disclosure may block blue light, thereby improving the color gamut value.
    Type: Grant
    Filed: September 12, 2018
    Date of Patent: January 7, 2020
    Assignee: Wuhan China Star Optoeelectronics Technology Co., Ltd.
    Inventors: Chang-chih Huang, Chaoqun Yang
  • Patent number: 10475359
    Abstract: One embodiment of a light emitting diode (LED) lighting device comprises multiple LED light sources disposed on multiple elongated circuit boards, with each LED light source being electrically connected to one of the circuit boards. The elongated circuit boards are electrically coupled using electrical passageways to provide power to the circuit boards at intervals along the length of the elongated circuit boards, and the light sources disposed on the circuit boards emit light in the same direction perpendicular to the elongated circuit boards. The electrical passageways can be wires or groups of wires.
    Type: Grant
    Filed: January 2, 2018
    Date of Patent: November 12, 2019
    Assignee: Bitro Group, Inc.
    Inventor: Ki S. Lee
  • Patent number: 10459268
    Abstract: The object is to provide a technique capable of preventing, in a display device, bubbles from being trapped between a protective plate or a touch panel and a display panel and occurrence of display inhomogeneity. The display device includes a display panel, a backlight unit, a cushion serving as a support, and a first frame. The first frame includes: an opening through which the backlight unit is seen; a sidewall covering side surfaces of the backlight unit to form the opening; a panel facing portion extending from the sidewall toward the opening side to cover an end portion of the backlight unit; and a protruding portion protruding from the panel facing portion toward the display panel side. The cushion is disposed on the panel facing portion. The protruding portion is thinner than the cushion. A predetermined clearance is created between the tip of the protruding portion and the display panel.
    Type: Grant
    Filed: March 15, 2018
    Date of Patent: October 29, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventor: Toru Kiyohara
  • Patent number: 10394063
    Abstract: A display apparatus, particularly a display apparatus having a supporter member to improve the cooling efficiency, is provided. The display apparatus includes a display panel configured to display an image; a light source configured to emit a light to the display panel; a bottom chassis in which the light source is installed; and a supporter member configured to support the display panel, wherein the supporter member includes a cooling flow path configured to allow an air to flow to the inside of the supporter member.
    Type: Grant
    Filed: April 11, 2016
    Date of Patent: August 27, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jeong Shan Na, Yong-Hun Kwon, Jong Bin Kim, Hyung Jin Lee
  • Patent number: 10288797
    Abstract: Systems, methods, and computer-readable media are disclosed for structural alignment features for light emitting diode arrays. In one embodiment, a device may include a light guide with a first surface, a second surface opposite the first surface, and a third surface perpendicular to the first surface and the second surface. The device may include a light emitting diode array with a first set of light emitting diodes arranged in a first row and a second set of light emitting diodes arranged in a second row. The first set of light emitting diodes may be optically and physically coupled to the first surface, and the second set of light emitting diodes may be optically coupled to the second surface.
    Type: Grant
    Filed: December 19, 2016
    Date of Patent: May 14, 2019
    Assignee: Amazon Technologies, Inc.
    Inventors: Robert Arthur Sprague, Eric Gifford Marason, Weihsin Hou, Juho Ilkka Jalava
  • Patent number: 10165678
    Abstract: A display apparatus includes a display panel which displays an image with light and a backlight unit which provides the light to the display panel. The backlight unit includes a first light source, a second light source and a circuit board. The circuit board includes in a top plan view, a first edge lengthwise extending parallel to a first direction and a second edge lengthwise extending parallel to a second direction crossing the first direction, and a sidewall portion extending from the bottom portion. In a third direction crossing the first and second directions, the sidewall portion includes first and second sidewall portions respectively extending from the first and second edges, and on which the first and second light sources are mounted.
    Type: Grant
    Filed: March 6, 2017
    Date of Patent: December 25, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Minsu Jung, Dong-wook Kim, Jaesul An
  • Patent number: 10121938
    Abstract: A light source module is provided. The light source module includes a flexible printed circuit board, plural light-emitting diodes and plural first light-absorbing portions. The flexible printed circuit board has a first edge and a second edge opposite to the first edge. The light-emitting diodes are disposed on the flexible printed circuit board near the first edge. The first light-absorbing portions are disposed on the flexible printed circuit board near the second edge, in which the first light-absorbing portions are alternately arranged with the light-emitting diodes.
    Type: Grant
    Filed: June 26, 2014
    Date of Patent: November 6, 2018
    Assignee: Radiant Opto-Electronics Corporation
    Inventors: Chia-Yin Chang, Chin-Ting Weng
  • Patent number: 10073214
    Abstract: A display module and a display apparatus having the display module are provided. The display module includes a light guide plate which turns a path of generated light and emits the light through an emitting surface, a quantum dot (QD) sheet provided to correspond to the emitting surface to improve color reproducibility of the light emitted from the light guide plate, and at least one guide member which is fixed inside of a chassis and supports the light guide plate and the QD sheet. Using such a configuration, the color reproducibility of the display module may be improved, and the light guide plate and the QD sheet may be fixed together.
    Type: Grant
    Filed: January 5, 2016
    Date of Patent: September 11, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Min Gyu Yoon, Sung Yong Park, Heong Seog Lee
  • Patent number: 9897293
    Abstract: The present disclosure relates to a field of display technology and discloses a backlight module and a display device. The backlight module comprises: a backplate comprising a bottom plate and side plates, which form a mounting recess; an optical film positioned in the mounting recess; at least two supporting bars positioned between the bottom plate and the optical film and arranged crosswise, wherein each two supporting bars are fastened to each other and each of the supporting bars is fastened on the bottom plate. In the above backlight module, a mechanical strength of the backplate of the backlight module may be increased due to the supporting bars mounted on the bottom plate and arranged crosswise, and a resistance to bending of the backplate is thus improved.
    Type: Grant
    Filed: June 26, 2015
    Date of Patent: February 20, 2018
    Assignee: BOE Technology Group Co., Ltd.
    Inventors: Jian Xu, Xinyin Wu, Yongda Ma
  • Patent number: 9865185
    Abstract: One embodiment of a light emitting diode (LED) lighting device comprises multiple LED light sources disposed on multiple elongated circuit boards, with each LED light source being electrically connected to one of the circuit boards. The elongated circuit boards are electrically coupled using electrical passageways to provide power to the circuit boards at intervals along the length of the elongated circuit boards, and the light sources disposed on the circuit boards emit light in the same direction perpendicular to the elongated circuit boards. The electrical passageways can be wires or groups of wires.
    Type: Grant
    Filed: August 15, 2014
    Date of Patent: January 9, 2018
    Assignee: Bitro Group, Inc.
    Inventor: Ki S. Lee
  • Patent number: 9523960
    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: Grant
    Filed: July 3, 2014
    Date of Patent: December 20, 2016
    Assignee: CASIO COMPUTER CO., LTD.
    Inventors: Kei Hanzawa, Eiji Yamakawa
  • Patent number: 9298033
    Abstract: The present invention relates to a liquid crystal display device that includes a particular liquid crystal composition and a color filter that uses a particular pigment. The present invention provides a liquid crystal display device that prevents a decrease in voltage holding ratio (VHR) and an increase in ion density (ID) in a liquid crystal layer and resolves the problems of display defects such as white streaks, alignment nonuniformity, and image sticking. Since the liquid crystal display device of the present invention prevents a decrease in voltage holding ratio (VHR) and an increase in ion density (ID) in the liquid crystal layer and resolves the problems of display defects such as image sticking, the liquid crystal display device is useful as VA-mode and PSVA-mode liquid crystal display devices of an active matrix drive type, and is applicable to liquid crystal display devices of liquid crystal televisions, monitors, cellular phones, smart phones, etc.
    Type: Grant
    Filed: March 31, 2014
    Date of Patent: March 29, 2016
    Assignee: DIC CORPORATION
    Inventors: Shinji Ogawa, Yoshinori Iwashita, Akira Kimura, Seiji Funakura, Katsunori Shimada
  • Patent number: 9193906
    Abstract: The present invention provides a liquid crystal display device that prevents a decrease in voltage holding ratio (VHR) and an increase in ion density (ID) in a liquid crystal layer and resolves the problems of display defects such as white streaks, alignment nonuniformity, and image sticking. Since the liquid crystal display device of the present invention prevents a decrease in voltage holding ratio (VHR) and an increase in ion density (ID) in the liquid crystal layer and resolves the problems of display defects such as image sticking, the liquid crystal display device is useful as VA-mode and PSVA-mode liquid crystal display devices of an active matrix drive type, and is applicable to liquid crystal display devices of liquid crystal televisions, monitors, cellular phones, smart phones, etc.
    Type: Grant
    Filed: October 3, 2012
    Date of Patent: November 24, 2015
    Assignee: DIC CORPORATION
    Inventors: Shinji Ogawa, Yoshinori Iwashita, Akira Kimura, Seiji Funakura, Katsunori Shimada
  • Patent number: 9118018
    Abstract: A conductive material having a mixture of PEDOT:PSS is provided. The conductive material can be used to form a flexible transparent conductive film. Furthermore, various LED-type flexible transparent displays can be formed by the flexible transparent conductive film.
    Type: Grant
    Filed: May 25, 2012
    Date of Patent: August 25, 2015
    Assignee: ELITE OPTOELECTRONIC CO., LTD.
    Inventors: Tsung-Yen Tsai, Chia-Chien Chin, Yu-An Li, Shieh-Heng Lee
  • Patent number: 9111495
    Abstract: A Liquid Crystal Display (LCD), a backlight used for the LCD and a method for producing the LCD and the backlight are provided which are capable of inhibiting an increase in component counts and in assembling processes and of reducing them, thereby achieving low costs. A display image is obtained by arranging a backlight section being able to perform scanning as a single unit in a manner that it positionally matches a liquid crystal displaying section. The backlight section is provided with a plurality of scanning electrodes and light emitting layers each providing a different luminescent color, and being spatially separated from each other on a principal face of the backlight and scanning is performed on a plurality of light emitting layers providing a different luminescent color.
    Type: Grant
    Filed: October 29, 2013
    Date of Patent: August 18, 2015
    Assignee: GETNER FOUNDATION LLC
    Inventors: Ken Sumiyoshi, Toshihiro Yoshioka, Hiroshi Hayama, Jin Matsushima
  • Patent number: 9110299
    Abstract: In an embodiment of the invention, a 3D display device is provided. The 3D display device includes: a first substrate including a plurality of right eye pixels and left eye pixels in an alternate arrangement; a second substrate opposite to the first substrate; a first optical modulating unit with a first inclined direction located in the right eye pixels between the first substrate and the second substrate; a second optical modulating unit with a second inclined direction located in the left eye pixels between the first substrate and the second substrate, wherein the first inclined direction is distinct from the second inclined direction; and a light transparent element disposed on the second substrate.
    Type: Grant
    Filed: June 4, 2012
    Date of Patent: August 18, 2015
    Assignees: INNOCOM TECHNOLOGY (SHENZHEN) CO., LTD., INNOLUX CORPORATION
    Inventor: Toshiya Inada
  • Publication number: 20150070629
    Abstract: A display device capable of emitting sufficient fluorescence is provided without an increase in the thickness of the liquid crystal layer. The device includes: a fluorescent emission layer (23) having fluorescent pigment molecules that absorb light to emit fluorescence; and a liquid crystal layer (4) capable of switching between a transparent state and a scattering state. The fluorescent pigment molecules are dichroic fluorescent pigment molecules (23a) with different emission intensities depending on the direction of emission. The dichroic fluorescent pigment molecules (23a) in the fluorescent emission layer (23) are oriented so as to have transition dipole moments with the same direction.
    Type: Application
    Filed: November 20, 2014
    Publication date: March 12, 2015
    Inventors: Yasushi ASAOKA, Kiyoshi MINOURA, Kazuhiro DEGUCHI, Eiji SATOH, Sayuri FUJIWARA
  • Patent number: 8976321
    Abstract: The present invention relates to a fluorescent powder mixture, a manufacturing method for the same, and a corresponding liquid crystal display device. The fluorescent powder mixture is a mixture of a conductive powder and a fluorescent powder, wherein the conductive powder is aluminum zinc oxide, gallium zinc oxide, or indium tin oxide. The fluorescent powder mixture, the manufacturing method for the same, and the corresponding liquid crystal display device of the present invention increase the conductivity of the fluorescent powder, and further weaken the electron enrichment phenomenon on the surface of the fluorescent powder, so as to increase the illumination performance of the fluorescent powder.
    Type: Grant
    Filed: June 8, 2012
    Date of Patent: March 10, 2015
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventor: Yewen Wang
  • Publication number: 20150055060
    Abstract: The present invention provides a method for producing a fluoride fluorescent material, the method comprising: contacting potassium ions with first complex ions comprising tetravalent manganese ions and second complex ions comprising at least one member selected from the group consisting of elements belonging to Groups 4 and 14 of the Periodic Table in a liquid medium comprising hydrogen fluoride to obtain a dispersion containing fluoride particles represented by the following formula (I): K2[M1-bMn4+bF6]??(I) wherein M is the at least one member selected from the group consisting of elements belonging to Groups 4 and 14 of the Periodic Table, and b satisfies the relationship: 0<b<0.2; adding a reducing agent to the dispersion; and contacting the fluoride particles in the dispersion to which the reducing agent is added with at least one of additional second complex ions and additional potassium ions in the presence of hydrogen fluoride to obtain a fluoride fluorescent material.
    Type: Application
    Filed: August 25, 2014
    Publication date: February 26, 2015
    Inventor: Tomokazu YOSHIDA
  • Patent number: 8928837
    Abstract: A circuit substrate including a base layer and a plurality of lead units arranged as an array is provided, wherein the base layer has a plurality of through grooves, and the lead units are disposed on the base layer. Each of the lead units includes a common terminal and at least three leads. The common terminal is capable of being divided into a plurality of electrodes connected with each other. The leads are extended outwards from the edge of the common terminal, and each of the leads is extended outwards from the edge of one of the electrodes. The through grooves expose the common terminals of the lead units.
    Type: Grant
    Filed: August 30, 2011
    Date of Patent: January 6, 2015
    Assignee: Everlight Electronics Co., Ltd.
    Inventor: Wen-Chieh Tsou
  • Patent number: 8913214
    Abstract: A backlight assembly includes at least one lamp including a lamp electrode, at least one lamp socket holding the lamp, an inverter applying electric power to the lamp, and a receiving container including a socket receiving portion corresponding to an end portion of the lamp to receive the lamp socket and an inverter receiving portion for receiving the inverter. Therefore, a manufacturing process may be simplified, and manufacturing costs is decreased.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: December 16, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yong-Seok Yang, Joo-Young Kim, Jung-Tae Kang, Jin-Ho Ha
  • Patent number: 8908125
    Abstract: A fluorescent substrate (5) of the present invention includes: a fluorescent layer (3) which emits light by receiving excitation light; and a reflecting film (10) being provided both (i) on a side surface(s) of the fluorescent layer (3) and (ii) on a surface of the fluorescent layer (3), on which surface the excitation light is incident, the reflecting film (10) (I) transmitting a component having a peak wavelength of the excitation light, and (II) reflecting a component having a peak wavelength of the light emitted from the fluorescent layer (3).
    Type: Grant
    Filed: January 28, 2011
    Date of Patent: December 9, 2014
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Yoshimasa Fujita
  • 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: 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: 8773618
    Abstract: A light emitting unit and a liquid crystal display apparatus including the same are provided. The light emitting unit includes a light source unit which generates light, and a driving board which drives the light source unit. The light source unit includes a light source which generates the light, a container member which forms an opening therein and which contains the light source within the opening, and a fluorescent member mounted in the opening of the container member. The light source and the florescent member are spaced apart.
    Type: Grant
    Filed: March 16, 2012
    Date of Patent: July 8, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jeong-phil Seo, Gil-tae Hur, Yong-hun Kwon, Kye-hoon Lee, Young-min Lee, Kun-ho Cho, Suk-ju Choi
  • Patent number: 8767137
    Abstract: In a liquid crystal display device, the reduction of power consumption is realized by reddening a backlight while maintaining a white balance. An aperture ratio of a red subpixel and an aperture ratio of a blue subpixel are set such that, in a state where an aperture ratio of a green subpixel in each pixel of a liquid crystal panel is fixed to a desired value, white brightness efficiency takes a maximum value which is set based on a balance between light emission efficiency which is increased corresponding to lowering of a color temperature of the backlight and transmissivity of the pixel which is decreased corresponding to the increase of the aperture ratio of the blue subpixel.
    Type: Grant
    Filed: January 28, 2011
    Date of Patent: July 1, 2014
    Assignee: Japan Display Inc.
    Inventors: Ikuo Hiyama, Kentaro Ojima, Masahiro Ishii, Shisei Katou, Yoshiro Mikami
  • Patent number: 8730408
    Abstract: This backlight device 12 of the present invention includes: a cold cathode fluorescent tube; a chassis 14 that houses at least the cold cathode fluorescent tube on a front surface 14a1 side of a bottom plate 14a of the chassis; and a circuit substrate 32 having a front surface 32a on which electronic components 38a and 38b are disposed, the front surface 32a facing a rear surface 14a2 of the bottom plate 14a of the chassis 14. The heat generated from the electronic components 38a and 38b circulates towards the chassis 14 with ease, and therefore the heat generated from the electronic components 38a and 38b on the circuit substrate 32 can be effectively dissipated by the bottom plate 14a of the chassis 14.
    Type: Grant
    Filed: May 25, 2012
    Date of Patent: May 20, 2014
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Tsuyoshi Ozeki
  • Patent number: 8724054
    Abstract: A spectral conversion device including a plurality of discrete units dyed with a photoluminescent material at a concentration greater than or equal to an amount sufficient to absorb and convert substantially all input light from a light source to a desired output spectrum, and a coating material disposed around the discrete units, wherein the coating material binds the plurality of discrete units to form a matrix, wherein when the plurality of discrete units are positioned over the light source, the input light passing through the transparent discrete units is not converted, and the input light passing through the doped discrete units is converted to red and green wavelengths, further wherein the emitted input light and the converted red and green light correspond to the desired output spectrum to produce one or more colors. An associated method and an associated device used with flat panel image displays are also provided.
    Type: Grant
    Filed: May 27, 2010
    Date of Patent: May 13, 2014
    Inventor: Gary Wayne Jones
  • Patent number: 8678633
    Abstract: A lamp electrode printed circuit board of a backlight unit includes an insulating substrate, first and second conductive patterns on the insulating substrates along a first direction and in parallel, a connecting pattern extending from one of the first and second conductive patterns, a connecting pad at one end of the connecting pattern, auxiliary patterns extending from an edge of the connecting pad, and lamp holders electrically connected to the first and second conductive patterns and spaced apart from each other along the first direction.
    Type: Grant
    Filed: May 15, 2008
    Date of Patent: March 25, 2014
    Assignee: LG Display Co., Ltd.
    Inventors: Byung-Jin Choi, Hong-Sung Song, Woong-Ki Min
  • Patent number: 8670089
    Abstract: A display device, a manufacturing method thereof, and a color adjusting method used thereon are provided. The display device includes a blue light source and a display panel which includes a substrate having a color adjusting layer, a blue filter layer, and an inner polarizer disposed thereon. The color adjusting layer includes a plurality of color excitation units, wherein each color excitation unit contains a plurality of wavelength transformation materials. The blue filter layer allows only blue light to pass therethrough and absorbs other color light. The blue light passes through the inner polarizer and the blue filter layer to reach the color excitation units. The blue light further excites the wavelength transformation materials to generate different color light. A part of the different color light is transmitted to and absorbed by the blue filter layer.
    Type: Grant
    Filed: December 10, 2009
    Date of Patent: March 11, 2014
    Assignee: Au Optronics Corporation
    Inventors: Chun-Chang Hung, Shui-Chih Lien
  • Patent number: 8659715
    Abstract: A liquid crystal display (LCD) apparatus is provided. The LCD apparatus includes a frame, a liquid crystal panel which is disposed inside the frame, at least one fluorescent lamp which is disposed inside the frame to project light toward the liquid crystal panel, a voltage supply printed circuit board (PCB) which supplies a driving voltage to the fluorescent lamp and includes a connection end and at least one connection terminal arranged on the connection end; and at least one fluorescent lamp connector to which the fluorescent lamp and the voltage supply PCB are connected and which includes a PCB insertion recess into which the connection end is inserted, and the PCB insertion recess has opposite sides which are open in a width direction of the fluorescent lamp connector.
    Type: Grant
    Filed: November 20, 2009
    Date of Patent: February 25, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ju-taek Lee, Dae-hyoun Byoun, Seung-eon Lee
  • Patent number: 8659721
    Abstract: A liquid crystal display device capable of efficiently obtaining a high brightness with reduced unevenness in brightness using a single light-emitting section is provided. The liquid crystal display device includes: a liquid crystal panel for controlling display by changing orientation of a liquid crystal composition; a single cylindrical light-source section (634); and a reflecting section (636) provided so that the single cylindrical light-source section is sandwiched between the reflecting section and the liquid crystal panel, for reflecting the light emitted from the single cylindrical light-source section (634) toward the liquid crystal panel, in which at least a part of a sectional shape of a reflecting surface of the reflecting section (636) in a cross section perpendicular to an axial direction of the single cylindrical light-source section (634) is formed based on a parabola whose focal point is a position of the single cylindrical light source section (634).
    Type: Grant
    Filed: November 19, 2010
    Date of Patent: February 25, 2014
    Assignee: Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Toshiyuki Amimoto, Masaki Tsubokura, Tomohiro Maeyama
  • Patent number: 8654278
    Abstract: The present invention discloses a backlight module and a liquid crystal display (LCD). A backlight module comprising an optical film, at least one light source, at least one reflecting housing and a reflecting surface. The reflecting surface and the optical film are symmetrically disposed with respect to the light source, and are disposed in identical side of the light source; the reflecting housing comprises a first reflecting layer and a second reflecting layer; the reflecting surface has a predetermined trajectory, and corresponds to the first reflecting layer and the light source. In the predetermined trajectory, the lights entering into the reflecting surface are reflected by the reflecting surface and enter into the optical film.
    Type: Grant
    Filed: April 9, 2012
    Date of Patent: February 18, 2014
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventor: Kuojun Fang
  • Publication number: 20140016064
    Abstract: A light emitting photonic bandgap (PBG) material, and devices uses the same, having (a) a polymer network exhibiting a non-uniform pitch; (b) a small molecule liquid crystal material with a birefringence >0.04; and (c) one or more light emitting dyes having a low triplet state absorption. The light emitting PBG material has a defect-induced density of states enhancing feature at a wavelength that overlaps the emission spectrum of the light emitting dye. Excitation of the light emitting PBG material by a light source causes a directional electromagnetic emission from the light emitting material. The PBG material, and device, are capable of emitting continuous wave laser light as a result of excitation by a low-power incoherent light source.
    Type: Application
    Filed: July 11, 2013
    Publication date: January 16, 2014
    Inventors: Antonio Munoz, Tamas Kosa, Paul Luchette, Ludmilla Sukhomlinova, Bahman Taheri
  • Patent number: 8593586
    Abstract: A liquid crystal display including a backlight unit and a liquid crystal display panel is provided. The backlight unit includes an exciting light source and quantum dot remote phosphor. Spectrum of the backlight unit has relative maximum brightness peaks BL1, BL2 and BL3 between 445 nm to 455 nm, between 528 nm to 538 nm, and between 618 nm to 628 nm, respectively. The liquid crystal display panel is disposed above the backlight unit and has a red color filter, a green color filter, a blue color filter and a yellow color filter, wherein areas of the red color filter, the green color filter, the blue color filter and the yellow color filter are ARAGABAY, respectively. The areas ARAGABAY satisfy the following relationship: 0.75<AR/AG<0.85; 0.3<AR/AB<0.4; and 0.95<AR/AY<1.05.
    Type: Grant
    Filed: February 28, 2012
    Date of Patent: November 26, 2013
    Assignee: Au Optronics Corporation
    Inventors: Ying-Li Wang, Chien Shen
  • Patent number: 8593580
    Abstract: A projection-type display apparatus, being suitable to be applied as a light source of a solid-state light source, in the place of a conventional lamp, comprises: a light source unit, which is configured to emit a white-color light therefrom; a light separation optic system, which is configured to separate the white color light from the light source unit into three primary color lights, red-color (R), green-color (G) and blue-color (B); R, G and B light modulating portions, each of which modulates each of R, G and B polarized lights separated, depending on a video signal, respectively; a light composing unit, which is configured to compose optical images, which are formed by the R, G and B light modulating portions; and a projecting portion, which is configure to project the optical image composed, enlargedly, wherein the light source unit emits a white color light emitting from a nearly point-like light source, including an excitation light from a solid-state light emitting element therein.
    Type: Grant
    Filed: May 10, 2013
    Date of Patent: November 26, 2013
    Assignee: Hitachi Consumer Electronics Co., Ltd.
    Inventor: Shutoku Watanabe
  • Patent number: 8581829
    Abstract: Exemplary backlight driving method and display device are provided. The display device includes a light source array. The light source array includes a first group of light-emitting rows and a second group of light-emitting rows. The backlight driving method includes the steps of: firstly, receiving a gate driving frequency of the display device; subsequently, generating a backlight driving frequency according to the gate driving frequency; and afterwards, sequentially providing a first row driving voltage to the first group of light-emitting rows in a first time period and sequentially providing a second row driving voltage to the second group of light-emitting rows in a second time period, according to the backlight driving frequency. The first time period and the second time period have different phases from each other, and the gate driving frequency is different from the backlight driving frequency.
    Type: Grant
    Filed: October 15, 2010
    Date of Patent: November 12, 2013
    Assignee: AU Optronics Corp.
    Inventors: Hsiang-Yuan Cheng, Shih-Hsun Lo, Chen-Lun Chiu, Shan-Fu Yuan, Yu-Wei Liao
  • Patent number: 8582052
    Abstract: Backlit LCD displays are becoming commonplace within many vehicle applications. The unique advantage of this invention is that it optimizes system power savings for display of low dynamic range (LDR) images by dynamically controlling spatially adjustable backlighting. This is accomplishes through use of a control technique that takes into account the sequential nature of the video display process.
    Type: Grant
    Filed: August 22, 2008
    Date of Patent: November 12, 2013
    Assignee: Gentex Corporation
    Inventor: Harold C. Ockerse
  • Patent number: 8582058
    Abstract: It is an object of the present invention to provide a lighting system having favorable luminance uniformity in a light-emitting region when the lighting system has large area. According to one feature of the invention, a lighting system comprises a first electrode, a second electrode, a layer containing a light-emitting substance formed between the first electrode and the second electrode, an insulating layer which is formed over a substrate in a grid form and contains a fluorescence substance, and a wiring formed over the insulating layer. The insulating layer and the wiring are covered with the first electrode so that the first electrode and the wiring are in contact with each other.
    Type: Grant
    Filed: October 8, 2009
    Date of Patent: November 12, 2013
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Satoshi Seo, Yasuyuki Arai
  • Patent number: 8573793
    Abstract: An electrode plate for an external electrode fluorescent lamp and a backlight are disclosed. The electrode plate for external electrode lamp comprising a strip pressure plate made of conductive material, wherein the strip pressure plate comprises a first surface on which at least one groove are provided and a second surface that is opposite to the first surface, the grooves run across both sides of the first surface and accommodate external electrodes of the external electrode lamps.
    Type: Grant
    Filed: September 1, 2011
    Date of Patent: November 5, 2013
    Assignee: Beijing Boe Optoelectronics Technology Co., Ltd.
    Inventors: Fei Wang, Laiyou Cui, Zhanchang Bu, Fang Kang, You Li
  • Patent number: 8542181
    Abstract: A flat panel display device, LCD controller and associated method is provided. The flat panel display device includes a display panel, a lamp for providing a backlight source for the display panel, a power transformation module for providing a power source for the lamp, a non-volatile storage unit for storing program code, and a display controller. The display controller includes an image processing module for processing image data and outputting processed results to the display panel, and a digital pulse width modulation module for adjusting on and off time of the power transformation module according to a synchronization signal.
    Type: Grant
    Filed: June 9, 2006
    Date of Patent: September 24, 2013
    Assignee: MStar Semiconductor, Inc.
    Inventors: Sterling Smith, Chih-Tien Chang
  • Publication number: 20130242232
    Abstract: A projection-type display apparatus, being suitable to be applied as a light source of a solid-state light source, in the place of a conventional lamp, comprises : a light source unit, which is configured to emit a white-color light therefrom; a light separation optic system, which is configured to separate the white color light from the light source unit into three primary color lights, red-color (R), green-color (G) and blue-color (B); R, G and B light modulating portions, each of which modulates each of R, G and B polarized lights separated, depending on a video signal, respectively; a light composing unit, which is configured to compose optical images, which are formed by the R, G and B light modulating portions; and a projecting portion, which is configure to project the optical image composed, enlargedly, wherein the light source unit emits a white color light emitting from a nearly point-like light source, including an excitation light from a solid-state light emitting element therein.
    Type: Application
    Filed: May 10, 2013
    Publication date: September 19, 2013
    Applicant: HITACHI CONSUMER ELECTRONICS CO., LTD.
    Inventors: Nobuyuki Kimura, Koji Hirata, Hidehiro Ikeda
  • Patent number: 8537306
    Abstract: A backlight assembly for a liquid crystal display includes: one U-shaped lamp; a lamp housing including the lamp; a side supporter fastened to the lamp housing and including an inserting part where the lamp is inserted; and a lamp support member that supports and fixes the lamp within the inserting part of the side supporter.
    Type: Grant
    Filed: December 15, 2006
    Date of Patent: September 17, 2013
    Assignee: LG Display Co., Ltd.
    Inventor: Sang Bum Lee
  • Patent number: 8531622
    Abstract: A method for connecting lamps and an external power supply in a liquid crystal display is disclosed. The liquid crystal display comprises: a liquid crystal panel; a plurality of lamps for generating light to be irradiated onto the liquid crystal panel; a common board including a common electrode contacting the electrodes of the lamps; a bottom cover accommodating the lamps and the common board; and a socket connector provided at one side of the common board and electrically connecting an external power supply and the common electrode, wherein an electrical contact portion of the socket connector is exposed to the outside by a through hole passing through the common board and the bottom cover.
    Type: Grant
    Filed: November 24, 2009
    Date of Patent: September 10, 2013
    Assignee: LG Display Co., Ltd.
    Inventor: Jaeho Lee
  • Publication number: 20130222738
    Abstract: A color liquid crystal display device having high color reproduction is provided, which includes a liquid crystal display element and a backlight unit. The liquid crystal display element includes a color filter having a blue filter segment, a green filter segment, and a red filter segment. The blue filter segment is prepared from a blue photosensitive resin composition which includes a blue pigment combination, a red dye component, an alkali-soluble resin, a compound having at least one ethylenically unsaturated group, a photoinitiator, and a solvent. The blue pigment combination includes a copper phthalocyanine-based blue pigment. The backlight unit is coupled to the liquid crystal display element and has a color temperature ranging from 8,000 K to 20,000 K.
    Type: Application
    Filed: February 8, 2013
    Publication date: August 29, 2013
    Applicant: CHI MEI CORPORATION
    Inventors: Bar-Yuan Hsieh, Jung-Pin Hsu, Bo-Hsuan Lin