Electroluminescent Light Source Patents (Class 349/69)
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Patent number: 9274419Abstract: The present invention relates to a blue photosensitive resin composition for a color filter and an application thereof. The blue photosensitive resin composition includes an organic pigment (A), a dye (B), an alkali-soluble resin (C), a compound having an ethylenically unsaturated group (D), a photo-initiator (E) and a solvent (F). The alkali-soluble resin (C) includes a first alkali-soluble resin (C-1) having a hindered amine structure. The blue photosensitive resin composition of the present invention can improve a voltage holding ratio and a contrast ratio of the color filter.Type: GrantFiled: March 11, 2015Date of Patent: March 1, 2016Assignee: CHI MEI CORPORATIONInventor: Jung-Pin Hsu
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Patent number: 9252186Abstract: A pixel array and a display device are provided. The pixel array includes a two-dimensional array that is formed by arranging a plurality of color sub-pixels and a plurality of white sub-pixels in the row direction and in the column direction, the color sub-pixels include color sub-pixels in three different colors. For color sub-pixels in each color in each row, color sub-pixels with the same color in the same row are arranged so that, the odd-numbered column sub-pixel and the even-numbered column sub-pixel alternate one by one, or they are disposed by way of groups each including two odd-numbered column sub-pixels alternating with even-numbered column sub-pixels or by way of groups each including two even-numbered column sub-pixels alternating with odd-numbered column sub-pixels.Type: GrantFiled: October 20, 2014Date of Patent: February 2, 2016Assignee: BOE TECHNOLOGY GROUP CO., LTDInventors: Heecheol Kim, Chulgyu Jung, Hyunsic Choi
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Patent number: 9236013Abstract: A reference luminescence amount-acquiring unit of a display device obtains reference brightness corresponding to a BL drive value detected by a drive value-detecting unit and a temperature detected by a temperature-detecting unit. A deterioration-detecting unit calculates an initial status value based on a ratio of reference brightness obtained based on a temperature and a BL drive value in an initial status and brightness in the initial status detected by a luminescence amount-detecting unit, and stores the initial status value. The deterioration-detecting unit further calculates a current status value based on a ratio of reference brightness obtained based on a current temperature and a current BL drive value and current brightness detected by the luminescence amount-detecting unit, compares the initial status value with the current status value, and determines whether calibration is required.Type: GrantFiled: September 29, 2011Date of Patent: January 12, 2016Assignee: NEC DISPLAY SOLUTIONS, LTDInventor: Katsuyuki Matsui
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Patent number: 9206955Abstract: An optical lens includes a first curved surface and a second curved surface. The first curved surface is for receiving a light ray, and includes a first curve, a second curve, a first symmetrical curve and a second symmetrical curve disposed on a first plane, and a third curve and a fourth curve disposed on a third plane. The second curved surface is opposite to the first curved surface, and includes a fifth curve, a sixth curve, a fifth symmetrical curve and a sixth symmetrical curve disposed on the first plane, and a seventh curve and an eighth curve disposed on the third plane. The first plane is perpendicular to the third plane, and the curvatures of all the curves are controlled by a weight factor, so that the light ray is emitted onto a preset area through the optical lens.Type: GrantFiled: December 2, 2011Date of Patent: December 8, 2015Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Ching-Tan Yu, Li-Ling Lee
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Patent number: 9201285Abstract: An electrode structure is proposed for controlling a spatially non-uniform electric field driving a tunable liquid crystal lens or beam steering device. The spatially non-uniform electrode structure enables the generation of a predetermined spatially non-uniform electric field profile where complex capacitive coupling between multiple different electrically floating neighboring electrode segments is employed for the generation of the electrical field of desired form by supplying an initial electric potential to a limited number of electrodes.Type: GrantFiled: November 11, 2013Date of Patent: December 1, 2015Assignee: LENSVECTOR INC.Inventors: Tigran Galstian, Vladimir Presniakov, Karen Asatryan, Amir Tork, Armen Zohrabyan, Aram Bagramyan, Simon Careau
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Patent number: 9196855Abstract: A display system, having an emissive body, emitting light over a complete surface as part of a display system. The emissive body can be a FIPEL type device with a first transparent conductive coating over a light emitting substrate. A transparent substrate, has first and second surfaces, with the first surface coupled to the first transparent conductive coating, and the second surface of said transparent substrate including a surface formed with plural light channeling structures thereon.Type: GrantFiled: March 13, 2013Date of Patent: November 24, 2015Assignee: Vizio IncInventor: Matthew McRae
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Patent number: 9164317Abstract: The invention relates to a display device, comprising an illumination means and a liquid crystal display. The illumination means also serves to heat the liquid crystal display, and control means may control the brightness of an image displayed via the liquid crystal display.Type: GrantFiled: March 28, 2011Date of Patent: October 20, 2015Inventor: Marc Rawer
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Patent number: 9146418Abstract: A display device including: an organic light emitting display unit formed on a first substrate, the organic light emitting display unit comprising first and second electrodes facing each other, and an organic emissive layer formed between the first and second electrodes; and a liquid crystal display unit formed on a second substrate facing the first substrate, the liquid crystal display unit configured to operate as a liquid crystal shutter in response to an electrical potential difference, wherein a resonance structure of the organic light emitting display unit enables the liquid crystal display unit to form an image in a color reflected from each pixel of the organic light emitting display unit.Type: GrantFiled: February 6, 2012Date of Patent: September 29, 2015Assignee: Samsung Display Co., Ltd.Inventors: Gun-Shik Kim, Jun-Sik Oh, Dong-Kyu Lee
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Patent number: 9135845Abstract: A display apparatus includes a display panel that displays a second image in a 3D mode, a barrier panel that forms a barrier pattern that separates the second image into a left-eye image and a right-eye image, a touch sensing part that includes third electrodes capacitively coupled to a portion of the electrodes included in the barrier panel, and a coordinate calculator. The coordinate calculator measures a variation of capacitance between the portion of the electrodes included in the barrier panel and the third electrodes.Type: GrantFiled: June 7, 2012Date of Patent: September 15, 2015Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Il Ho Lee, Seongmo Hwang, Jaejin Pyun, Yoongu Kim, Sang Min Jeon
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Patent number: 9121977Abstract: A liquid crystal display module is provided including a liquid crystal panel for displaying an image; a backlight unit including a light source unit for providing light to the liquid crystal panel; and a packaging chassis which holds the liquid crystal panel and the backlight unit in a single module. The light source unit includes a plurality of light sources; a light source support board for supporting the light sources; a wavelength conversion member, disposed in front of the light sources, which converts wavelengths of light emitted from the light sources; and a fixing member which holds the wavelength conversion member in front of the light sources, defines a mounting space within which the wavelength conversion member is disposed and defines an accommodation space within which the plurality of light sources are accommodated.Type: GrantFiled: December 21, 2012Date of Patent: September 1, 2015Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jae-hyun Park, Jun-seok An
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Patent number: 9122092Abstract: A user interface (200) for a portable electronic device (100) is configured to transition from a first state to a second state to present a plurality of mode-based user actuation targets to a user. The user interface (200) includes a segmented electro-optical device (407) configured to open and close shutters, thereby revealing and hiding the user actuation targets. The user interface includes a first polarizer (401) disposed above the segmented electro-optical device (407) and a colored reflective polarizer (405) disposed beneath the segmented electro-optical device. The colored reflective polarizer (405), which may include a colored dichroic polarizer (601) and a reflective polarizer (602), causes the user interface (200) to exhibit a predetermined color.Type: GrantFiled: June 22, 2007Date of Patent: September 1, 2015Assignee: Google Technology Holdings LLCInventors: Robert D. Polak, David M. Emig
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Publication number: 20150146135Abstract: A backlight module, a liquid crystal display and a control method for driving the backlight source, the backlight module comprising an LED backlight source and a driving circuit, the LED backlight source comprising first LEDs each formed of a blue light chip, red phosphor powder and green phosphor powder, and second LEDs each formed of a blue light chip, a green light chip and red phosphor powder, and the driving circuit comprising driving circuit modules for driving the first LEDs and the second LEDs respectively. The liquid crystal display includes the above-mentioned backlight module and the display panel.Type: ApplicationFiled: June 18, 2013Publication date: May 28, 2015Inventors: Lifeng Lin, Hongming Zhan, Yongcan Wang
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Publication number: 20150138488Abstract: The implementation of a superhigh-definition liquid crystal display device with a diagonal of 30 inches or more and a resolution of 100 ppi or more is facilitated. There is provided a direct-view-type liquid crystal display device that includes a display portion in which a plurality of pixels are placed in a matrix, the display portion whose diagonal is 30 inches or more, in which the resolution of the display portion is 100 pixels or more per inch, the plurality of pixels include first to fourth pixels, and one of the first to fourth pixels is an RG-type formed of a red subpixel and a green subpixel and another of the first to fourth pixels is a BH-type formed of a blue subpixel and a green, yellow, or white subpixel.Type: ApplicationFiled: May 16, 2013Publication date: May 21, 2015Inventor: Makoto Shiomi
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Patent number: 9036108Abstract: An illumination apparatus includes: a light-guiding plate; a plurality of light-emitting elements disposed along a side-end surface of the light-guiding plate that serves as a light-entry portion, each of the plurality of light-emitting elements has a light-emitting surface which faces toward the light entry portion; a light source substrate, disposed and separated with a space from the light entry portion of the light-guiding plate when viewed from above, that includes a mounting surface for the plurality of light-emitting elements, the mounting surface being orthogonal to the side-end surface serving as the light entry portion; and a step portion with which an end portion of the light source substrate located toward the light-guiding plate makes contact.Type: GrantFiled: August 10, 2012Date of Patent: May 19, 2015Assignee: SEIKO EPSON CORPORATIONInventors: Yoichi Momose, Nobutaka Urano
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Publication number: 20150131030Abstract: A display device includes: a display panel; a plurality of backlight units disposed on a rear side of the display panel; a first frame disposed on a rear side of the backlight units; a heat transfer sheet disposed on a rear side of the first frame above a predetermined position; and a second frame disposed on a rear side of the heat transfer sheet. An air layer is formed between the first frame and the second frame, below the heat transfer sheet.Type: ApplicationFiled: January 21, 2015Publication date: May 14, 2015Inventors: Tomohiro SEKIGUCHI, Kiyotaka NAKASE, Takayuki FURUKAWA
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Publication number: 20150131029Abstract: A color conversion substrate that can improve light use efficiency is provided. A color conversion substrate includes a transparent substrate having a main surface, a plurality of phosphor patterns arranged on the main surface and each of the phosphor patterns having side faces, and a reflective film that reflects light and is formed on at least the side faces of the phosphor patterns. An air layer is defined between the main surface and the phosphor patterns.Type: ApplicationFiled: May 15, 2013Publication date: May 14, 2015Applicant: Sharp Kabushiki KaishaInventors: Kazuya Kaida, Shinya Kadowaki
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Publication number: 20150124199Abstract: A transparent display device includes a display panel and an active transparent OLED backlight device. The display panel includes a first driving substrate, a color filter substrate and a polymer dispersed liquid crystal layer interposed therebetween. The first driving substrate has a first driving region and sub-pixel regions. The active transparent OLED backlight device includes a second driving substrate, an opposite substrate and OLEDs interposed therebetween. The second driving substrate has a second driving region and sub-pixel regions. The second driving region is aligned with the first driving region, and each of the sub-pixel regions of the second driving substrate is aligned with one of the sub-pixel regions of the first driving substrate. Each of the sub-pixel regions of the second driving substrate has a light-transmitting region and a light-emitting region. The OLEDs are respectively disposed on the light-emitting regions of the second driving substrate.Type: ApplicationFiled: December 19, 2013Publication date: May 7, 2015Applicant: Chunghwa Picture Tubes, Ltd.Inventors: Chun-Wei SU, Jian-Hua CHEN
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Publication number: 20150116634Abstract: A light emitting diode package includes: a light emitting diode (LED); and an LED lens over the LED, the LED lens having a symmetrical shape with respect to a central axis, wherein the LED lens includes a lower surface having first and second lower surfaces, an upper surface and a side surface connecting the lower surface and the upper surface, wherein the light through the first lower surface is totally reflected on the upper surface and is emitted though the side surface, wherein the first lower surface includes a first curved surface extending from the central axis and a second curved surface extending from a first end portion of the first curved surface, and wherein the second lower surface is flat and extends from a second end portion of the second curved surface.Type: ApplicationFiled: October 24, 2014Publication date: April 30, 2015Inventors: Kyu-Hwan LEE, Min-Su CHO, Gwan-Hoon PARK, Seo-Yoon LEE, Ji-Seok YANG, Seung-Won LEE
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Publication number: 20150116379Abstract: A liquid crystal display (LCD) device having an LCD panel with a plurality of pixels is disclosed. The LCD device includes gate and data driving circuits to provide a gate pulse and a data voltage to the pixels, respectively, and a timing controller to control the gate and data driving circuits. The LCD device also includes a backlight unit to provide light to the liquid crystal panel. The backlight unit includes a light source having at least one LED channel, a driving voltage generator to supply a driving voltage to the LED channel, and an LED driver to supply a conditional pulse width and amplitude modulation (CPWAM) signal to the LED channel. The CPWAM signal has a pulse with an amplitude and a width that are both variable from one period of a predetermined length to another period of the predetermined length.Type: ApplicationFiled: September 5, 2014Publication date: April 30, 2015Applicant: LG Display Co., Ltd.Inventor: Seongho LIM
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Publication number: 20150116635Abstract: The present invention provides a light emitting diode (LED) driving device, which comprises: a direct current/direct current (DC/DC) controller, for controlling an output segment that is used to generate an output voltage from an input voltage and supply the output voltage to an LED; an output current driver, for generating an output current of the LED; and an output discharging circuit, for performing, based on a predetermined control signal, discharging of the output voltage when a generation action of the output voltage and the output current stops.Type: ApplicationFiled: January 5, 2015Publication date: April 30, 2015Inventors: Ryosuke Kanemitsu, Masaaki Nakayama
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Patent number: 9019255Abstract: An organic light emitting display apparatus includes a polarizer film arranged on a substrate or an encapsulation substrate that faces an image realized by a display unit, wherein the polarizer film includes a plurality of regions having different light transmittances. By using the polarizer film, a luminance difference due to a voltage drop may be compensated for so that a uniform luminance may be obtained when the image is realized.Type: GrantFiled: April 1, 2010Date of Patent: April 28, 2015Assignee: Samsung Display Co., Ltd.Inventors: Sung-Joo Hwang, Hee-Chul Jeon, Jung-I Yun, Sae-Hee Lim
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Publication number: 20150098045Abstract: A control circuit of a switching converter includes a current detection comparator for comparing a detection voltage corresponding to a voltage drop of a detection resistor with a reference voltage and generating a peak current detection signal asserted when the detection voltage reaches the reference voltage, a driving logic unit for generating a pulse signal indicating a turn-on/off operation of a switching transistor and changing the pulse signal to an OFF level indicating the turn-off operation of the switching transistor when the peak current detection signal is asserted, a driver for driving the switching transistor based on the pulse signal, and a reference voltage setting unit for measuring time (TRECT) for which a current flows through a secondary coil and a switching period (T) of the switching transistor and adjusting the reference voltage (VREF) according to an equation: VREF=K×T/TRECT where K is a coefficient.Type: ApplicationFiled: October 3, 2014Publication date: April 9, 2015Inventor: Yoshinori IMANAKA
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Color converting member, method of manufacturing the same, light emitting device, and display device
Patent number: 9001288Abstract: A color converting member is capable of suppressing deterioration in a phosphor by a simple manufacturing process. A method of manufacturing a color converting member includes a process of molding a resin material into a shape. In the process, molding the resin material and the phosphor integrally into a shape is performed, after kneading a phosphor that converts one color light to another color light into the resin material.Type: GrantFiled: January 20, 2010Date of Patent: April 7, 2015Assignee: Dexerials CorporationInventors: Tsubasa Tsukahara, Yasushi Ito, Naoji Nada, Yoshihiro Oshima, Hideya Chubachi -
Publication number: 20150092137Abstract: A display device includes a plurality of organic light-emitting diode (OLED) pixels on a substrate, and a plurality of light-emitting diode (LED) pixels between the plurality of OLED pixels on the substrate, the plurality of LED pixels on a same plane as the plurality of OLED pixels.Type: ApplicationFiled: September 30, 2014Publication date: April 2, 2015Inventors: Sangjin KIM, Ohyun KWON, Jinhan KIM, Seongmin KIM
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Patent number: 8994891Abstract: A touch panel whose power consumption can be reduced is provided, and an increase in the manufacturing cost of the touch panel is prevented. A photosensor which includes a light-receiving element including a non-single-crystal semiconductor layer between a pair of electrodes and a transistor including an oxide semiconductor layer in a channel formation region is provided. A touch panel which includes a plurality of pixels and the photosensor adjacent to at least one of the plurality of pixels is provided. Each of the plurality of pixels includes a pair of terminals. One of the pair of terminals is a reflective conductive film. Alternatively, each of the pair of terminals is a light-transmitting conductive film.Type: GrantFiled: May 7, 2013Date of Patent: March 31, 2015Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Shunpei Yamazaki, Jun Koyama
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Publication number: 20150085223Abstract: A quantum dot light-emitting device and a display apparatus including the same, the device including a light-emitting device that emits a first light; a quantum dot layer facing the light-emitting device, the quantum dot layer including a plurality of quantum dots, absorbing the first light, and emitting a second light and a third light that have different wavelength ranges compared to the first light; and a band pass filter on the quantum dot layer, the band pass filter cutting off a portion of the second light and a portion of the third light.Type: ApplicationFiled: August 12, 2014Publication date: March 26, 2015Inventors: Jae-Byung PARK, Jong-Hyuk KANG, Hak-Sun KIM, Nam-Seok ROH, Dong-Hoon LEE
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Publication number: 20150085225Abstract: A light emitting diode (LED) backlight unit includes: a top cover; a bottom cover connected to the top cover to constitute a housing and spaced apart under a liquid crystal panel; LEDs disposed on a first surface defined by an inner top surface of the bottom cover; and electrode patterns arranged on the first surface.Type: ApplicationFiled: November 30, 2014Publication date: March 26, 2015Inventor: Chung Hoon LEE
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Publication number: 20150085224Abstract: A display comprises a first substrate, a second substrate opposite to the first substrate, an electrode structure, and a light-emitting combination (LEC) layer positioned between the first and second substrates, wherein the LEC layer comprises a light emitting material and a LC material, and a horizontal or vertical electric field is generated when a voltage is applied to that electrode structure. One of exemplified displays has an electrode structure comprising a first electrode and a second electrode oppositely disposed, and the LEC layer is positioned between the first and second electrodes, wherein a vertical electric field is generated when a voltage is applied. The device can further comprise an electron injection layer and a hole transport layer. Another exemplified display has an electrode structure arranged on one side of the first substrate, and a horizontal electric field is generated when a voltage is applied.Type: ApplicationFiled: September 18, 2014Publication date: March 26, 2015Inventors: Hsu-Kuan Hsu, Chien-Hung Chen, Hong-Yuan Chen, Mei-Chi Hsu, Pi-Ying Chuang, Chu-Hong Lai
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Patent number: 8988647Abstract: A method for cooling an electronic image assembly using ambient gas. Exemplary embodiments of the method include the steps of circulating a closed loop of circulating gas around the electronic image assembly, directing a flow of ambient air through a first manifold, allowing the flow of ambient air to cross the flow of circulating gas without allowing the two to mix, directing the flow of ambient air behind the electronic image assembly and directing the flow of ambient air through a second manifold. The circulating gas may be used to cool a front portion of the electronic image assembly. A cross through plate may be used to allow the ambient gas and circulating gas to cross paths without mixing. A heat exchanger may be included with some embodiments of the method.Type: GrantFiled: June 10, 2014Date of Patent: March 24, 2015Assignee: Manufacturing Resources International, Inc.Inventor: Tim Hubbard
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Publication number: 20150070628Abstract: The present invention relates to electro-optical switching elements and displays comprising them. In particular, it relates to electro-optical switching elements comprising at least a light reflecting layer, a light switching layer, and a light conversion layer, which comprises one or more light emitting substances, in particular, a light reflecting layer, which selectively reflects visible light, a light controlling element that controls the amount of transmitted and/or reflected light, and a light converting layer that shifts the wavelength of the transmitted light to longer values. The displays give bright images under either bright or dark conditions with small power consumption. They are particularly suitable for so called liquid crystal, electronic paper (e-paper) and MEMS switching applications.Type: ApplicationFiled: April 3, 2013Publication date: March 12, 2015Applicant: MERCK PATENT GMBHInventors: Masayoshi Suzuki, Naoya Fujiwara
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Patent number: 8976317Abstract: A display device comprising a first substrate, a second substrate, a blue phase liquid crystal layer and an optical element is provided. The first substrate has a display area and is opposite to the second substrate. The blue phase liquid crystal layer is disposed between the first and the second substrate and reflects a light selectively. The spectrum peak of the light is within an intersection interval corresponding to a cross point of x_bar, y_bar and z_bar stimulus value spectrums, and the intersection interval has a wavelength range from 480 nm to 520 nm. The optical element has at least one function for adjusting a phase of the light or absorbing the light.Type: GrantFiled: March 18, 2013Date of Patent: March 10, 2015Assignee: Innolux CorporationInventors: Chien-Hung Chen, Pi-Ying Chuang, Chuan-Chung Wang
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Patent number: 8976321Abstract: 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: GrantFiled: June 8, 2012Date of Patent: March 10, 2015Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.Inventor: Yewen Wang
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Publication number: 20150055058Abstract: A backlight unit (BLU) and a liquid crystal display apparatus having the BLU are provided. The BLU includes a plurality of light-emitting diodes (LEDs) configured to emit blue light, a fluorescent member configured to convert the blue light emitted from the plurality of LEDs into tricolor light and emit the tricolor light, and a filter disposed between the fluorescent member and the plurality of LEDs, and configured to selectively filter a first wavelength area of the tricolor light emitted from the fluorescent member toward the plurality of LEDs, and reflect a second wavelength area of the tricolor light emitted from the fluorescent member toward an output direction.Type: ApplicationFiled: March 18, 2014Publication date: February 26, 2015Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Na-won JANG, Kun-ho CHO
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Publication number: 20150055054Abstract: Preferred embodiments provide a cooling system for an electronic display. A constricted convection plate is used to force cooling air against a posterior surface of the electronic display. Fans may be used to propel or pull air between the constricted convection plate and the rear surface of an electronic display. A refrigeration unit or thermoelectric module may be employed to cool or heat the air traveling through the constricted convection channel. Some embodiments include a closed loop which extracts heat (or adds heat) to the front display surface.Type: ApplicationFiled: October 7, 2014Publication date: February 26, 2015Inventor: William DUNN
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Patent number: 8964148Abstract: A backlight unit comprises a circuit board (20) having, a plurality of LED's (22) arranged in a matrix, a diffuser panel (62), and a support pin (50) positioned between the circuit board (20) and the diffuser panel (62) for supporting the diffuser panel (62). The support pin (50) includes a first fixation portion (51) inserted in a hole (21) formed on the circuit board (20), a second fixation portion (52) positioned apart from the first fixation portion (51), and a pillar (53) having a tip end supporting the diffuser panel (62). The pillar (53) and the first fixation portion (51) are aligned in a direction perpendicular to the circuit board (20). According to this backlight unit, it is possible to ensure freedom in wiring around the LED's (22) and to prevent the pillar (53) of the support pin (50) from hindering the light.Type: GrantFiled: June 16, 2011Date of Patent: February 24, 2015Assignee: Panasonic Liquid Crystal Display Co., Ltd.Inventor: Takaaki Kitada
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Publication number: 20150049281Abstract: A display device may include a display panel that includes a plurality of display elements. The display device may further include a protective member overlapping the display panel. The display device may further include an optical member disposed between the display panel and the protective member and configured to prevent light reflected by the display panel from reaching the protective member. The optical member may include a plurality of directional members. The plurality of directional members may have an optic axis.Type: ApplicationFiled: March 3, 2014Publication date: February 19, 2015Applicant: Samsung Display Co., Ltd.Inventors: Innam LEE, SUK CHOI, YOUNGKUIL JOO, Kyung Woo HAN
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Publication number: 20150042925Abstract: A LED backlight source and a liquid crystal device are disclosed. The LED backlight source includes: a boost circuit for boosting an input DC voltage and for outputting the boosted DC voltage; a plurality of LED strings connected in parallel, wherein each of the LED strings comprises a plurality of serially connected LEDs and a first resistor, and each of the LED strings receives the boosted DC voltage from the boost circuit; an over-current protection circuit for controlling an output power of the boost circuit according to a detected resistance; and a short-connection protection circuit for adjusting the resistance detected by the over-current protection circuit according to a voltage at two ends of the first resistor.Type: ApplicationFiled: August 8, 2013Publication date: February 12, 2015Applicant: Shenzhen China Star Optoelectronics Technology Co. Ltd.Inventors: Anle Hu, Dan Cao
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Patent number: 8953105Abstract: The present disclosure relates to a 3-dimensional displaying apparatus using line light sources, which includes: a display panel having a plurality of pixels; a backlight panel having a plurality of line light sources disposed to be spaced apart from each other by a predetermined distance, the backlight panel being spaced apart from one surface of the display panel; and a distance-adjusting unit for adjusting a distance between the backlight unit and the display panel. According to the present disclosure, it is possible to display autostereoscopic images which may minimize the quality deterioration of the 3-dimensional images according to the change of distance from an observer to the 3-dimensional displaying apparatus, which is a problem of a displaying apparatus implementing 3-dimensional images by using a general parallax separating unit.Type: GrantFiled: April 5, 2012Date of Patent: February 10, 2015Assignee: Korea Institute of Science and TechnologyInventors: Sung Kyu Kim, Ki Hyuk Yoon
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Patent number: 8947618Abstract: A blue phase liquid crystal display device includes a backlight module and a blue phase liquid crystal display panel. The backlight module includes a plurality of light sources. The light sources generate a plurality of primary color lights with different bands. The blue phase liquid crystal display panel includes a blue phase liquid crystal layer. The blue phase liquid crystal layer includes a plurality of blue phase liquid crystal molecules and a plurality of chiral dopants. The blue phase liquid crystal layer has a reflection band. The reflection band is located between the bands of two adjacent primary color lights.Type: GrantFiled: March 27, 2012Date of Patent: February 3, 2015Assignee: Au Optronics CorporationInventors: Cheng-Yeh Tsai, Tai-Hsiang Huang
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Publication number: 20150029444Abstract: The present invention provides a fastening device for a LED light string of a backlight module, including a LED light string and a frame, the LED light string being configured with a substrate and a plurality of LEDs mounted onto the substrate, wherein at least a retainer is incorporated on the substrate, and the frame being provided with a notch matchable with the retainer such that the LED light string can be securely attached to the frame. The retainer can be made individually, and a SMT process is utilized to attach the retainer of the fastening device on the backside of the LED light string. With this convenient arrangement, a lot of manufacturing processes have been omitted. The LED light string and the frame can be modulated, and the overall configuration of the module is simplified.Type: ApplicationFiled: March 14, 2013Publication date: January 29, 2015Inventor: Quan Li
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Publication number: 20150022762Abstract: The invention relates to a semi-conductor component, comprising a semi-conductor chip (1) which has an active layer (1a) suitable for generating radiation and suitable for emitting radiation in the blue wavelength range. A first converter (3a) comprising a Ce doping is arranged downstream of the semiconductor chip (1) in the emission direction. In addition, a second converter (3b) comprising a minimum Ce doping of 1.5% is arranged downstream of the semiconductor chip (1) in the emission direction. The invention further relates to a module with a plurality of such components.Type: ApplicationFiled: August 16, 2012Publication date: January 22, 2015Applicant: OSRAM Opto Semiconductors GmbHInventors: Ion Stoll, Kirstin Petersen
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Patent number: 8928842Abstract: Provided is a curing device and a method for curing a frame of a liquid crystal panel, including a platform, having a working surface for placing the liquid crystal panel thereon, a back surface corresponding to the working surface, and a plurality of through holes formed through the working surface and the back surface; and an illumination unit, comprising at least one light source disposed corresponding to the working surface and/or the back surface for providing an ultraviolet light to irradiate the working surface and the back surface of the platform, wherein the ultraviolet light passes through the through holes, and an irradiated area of the ultraviolet light is larger than an area of the platform, such that it reduces the curing time of the frame and improves the appearance of around mura of the LCD.Type: GrantFiled: October 25, 2012Date of Patent: January 6, 2015Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.Inventor: Rui Fang
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Publication number: 20150002788Abstract: A process for manufacturing a liquid crystal display panel, a display device and a monochromatic quantum dot layer are disclosed; in the liquid crystal display panel, a plurality of pixel units are defined on the liquid crystal display panel, each pixel unit having sub-pixel units displaying different colors, at a position of the apposing substrate or the array substrate corresponding to a sub-pixel unit of at least one color in each pixel unit, a monochromatic quantum dot layer is disposed. Dispersing of monochromatic quantum dots with a macromolecular polymer network can prevent the quantum dots from aggregation and increase the quantum yield of the quantum dots, so as to increase the light efficacy of quantum excitation, as well as avoiding the contact between the monochromatic quantum dots with oxygen and increasing the life of quantum dots.Type: ApplicationFiled: July 17, 2013Publication date: January 1, 2015Inventors: Renwei Guo, Xue Dong
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Patent number: 8919997Abstract: A white light emitting diode includes a blue light emitting diode (“LED”) light source, and a light conversion layer which converts incident light from the blue LED light source into white light. The light conversion layer includes a green light emitting semiconductor nanocrystal and a red light emitting semiconductor nanocrystal. The white light emitting diode has a red, green and blue color (“RGB”) color locus which is within a chrominance error range (±4?E*ab±2?E*ab) locus from the constant hue locus of each of sRGB color coordinates, or within a chrominance error range (±4?E*ab±2?E*ab) locus from the constant hue locus of each of AdobeRGB color coordinates.Type: GrantFiled: April 17, 2014Date of Patent: December 30, 2014Assignee: Samsung Electronics Co., Ltd.Inventors: Seoung-Jae Im, Seo-Young Choi, Eun-Joo Jang
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Patent number: 8922735Abstract: A backlight system includes: a light-emitting section (1) having a plurality of light sources that emit beams of light at different dominant wavelengths from one another; and an imaging optical system (3) including a plurality of microlenses (3a) that focus beams of light emitted from the light-emitting section (1), the backlight system irradiating a liquid crystal panel with beams of light having passed through the imaging optical system (3), the liquid crystal panel including a plurality of pixels arrayed at a predetermined pitch from each other, on the assumption that the pitch at which the pixels are arrayed is denoted as P and the imaging optical system (3) has an imaging magnification of (1/n), the light sources (1) being arrayed at a pitch (P1) given as P1=n×P, the microlenses (3a) being arrayed at a pitch (P2) given as P2=(n/(n+1))×P.Type: GrantFiled: June 2, 2010Date of Patent: December 30, 2014Assignees: Sharp Kabushiki Kaisha, Tohoku UniversityInventors: Tatsuo Uchida, Yoshito Suzuki, Tohru Kawakami, Kazuo Sekiya, Masahiro Nishizawa, Takahiro Ishinabe, Baku Katagiri, Yoshihiro Hashimoto, Shoichi Ishihara, Shuichi Kozaki, Yutaka Ishii
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Patent number: 8919998Abstract: A white light emitting diode includes a blue light emitting diode (“LED”) light source, and a light conversion layer which converts incident light from the blue LED light source into white light. The light conversion layer includes a green light emitting semiconductor nanocrystal and a red light emitting semiconductor nanocrystal. The white light emitting diode has a red, green and blue color (“RGB”) color locus which is within a chrominance error range (±4?E*ab±2?E*ab) locus from the constant hue locus of each of sRGB color coordinates, or within a chrominance error range (±4?E*ab±2?E*ab) locus from the constant hue locus of each of AdobeRGB color coordinates.Type: GrantFiled: April 17, 2014Date of Patent: December 30, 2014Assignee: Samsung Electronics Co., Ltd.Inventors: Seoung-Jae Im, Seo-Young Choi, Eun-Joo Jang
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Patent number: 8922736Abstract: An illumination device including a plurality of light source modules. Each of the plurality of light source modules includes a substrate, a plurality of wiring lines provided on the substrate, and a plurality of LED devices implemented in the wiring lines. The plurality of LED devices include a plurality of red LED devices, a plurality of green LED devices, and a plurality of blue LED devices, wherein the plurality of wiring lines include a wiring line having the plurality of red LED devices implemented in series, a wiring line having the plurality of green LED devices implemented in series, and a wiring line having the plurality of blue LED devices implemented in series. The plurality of wiring lines are connected in parallel and are driven by a single power voltage.Type: GrantFiled: August 22, 2013Date of Patent: December 30, 2014Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.Inventors: Toshiaki Tanaka, Hiroki Kaneko, Ikuo Hiyama
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Publication number: 20140375930Abstract: A driver for driving an LED backlight source is disclosed. The driver includes a boost converter for boosting inputted DC voltage and outputting boosted DC voltage to an LED series circuit having LEDs connected and a resistor in series, a feedback circuit for feeding back voltage across the resistor to a backlight driving circuit, and a control switch controlled by output of the backlight driving circuit depending on feedback voltage of the voltage across the resistor for keeping current flowing through the LED series circuit in a constant current. The driver drives the LED series circuit with a constant current, thereby prolonging lifetime of each LED of the LED series circuit. Furthermore, since a time period which the current flowing through the LED series circuit approaches to constant value is shorter, the driver has advantages over lower power consumption, faster response time and better operating efficiency.Type: ApplicationFiled: June 26, 2013Publication date: December 25, 2014Applicant: Shenzhen China Star Optoelectronics Technology Co., Ltd.Inventor: Hua Zhang
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Patent number: 8916397Abstract: A method for producing an electronic component comprising barrier layers for the encapsulation of the component comprises, in particular, the following steps: providing a substrate (1) with at least one functional layer (22), applying at least one first barrier layer (3) on the functional layer (22) by means of plasmaless atomic layer deposition (PLALD), and applying at least one second barrier layer (4) on the functional layer (22) by means of plasma-enhanced chemical vapor deposition (PECVD).Type: GrantFiled: January 29, 2009Date of Patent: December 23, 2014Assignee: OSRAM Opto Semiconductors GmbHInventors: Christian Schmid, Tilman Schlenker, Heribert Zull, Ralph Paetzold, Markus Klein, Karsten Heuser
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Patent number: 8913213Abstract: A light emitting apparatus including a first light emitting device including a first light emitting diode chip configured to emit light of a first rank included in a first color gamut, and a second light emitting device including a second light emitting diode chip configured to emit light of a second rank included in the first color gamut, in which the first rank is different than the second rank. In addition, the first and second light emitting devices are arranged in relation to each other such that the light emitted by the first emitting device mixes with light emitted by the second light emitting device to form light of a third rank different than the first and second ranks.Type: GrantFiled: November 20, 2009Date of Patent: December 16, 2014Assignee: LG Innotek Co., Ltd.Inventors: Kyung Jun Kim, Chul Ho Park