Electroluminescent Patents (Class 365/111)
-
Patent number: 11557235Abstract: A device includes multiple row power lines and multiple row control lines arranged in rows, where each row control line corresponds to one of the row power lines. The device also includes multiple column power lines arranged in columns. The device further includes multiple unit cells, where each unit cell is coupled to one of the row power lines and one of the row control lines and selectively coupled to one of the column power lines. In addition, the device includes multiple row power switches and multiple column power switches arranged in pairs, where each pair includes one of the row power switches and one of the column power switches. Each pair is configured to selectively (i) connect a corresponding one of the rows and a corresponding one of the columns or (ii) isolate the corresponding one row and the corresponding one column from each other.Type: GrantFiled: December 15, 2021Date of Patent: January 17, 2023Assignee: Raytheon CompanyInventors: Jehyuk Rhee, Bryan W. Kean, John L. Vampola
-
Patent number: 10295677Abstract: A method includes directing a probe beam to a target that includes an array of data portions in a data storage medium arranged so that a beam area of the probe beam extends across a plurality of adjacent data portions, the array including a data portion subset with each data portion of the subset responsive to the probe beam to produce a response illumination, receiving the response illumination at a detector, and determining data values corresponding to the plurality of adjacent data portions based on the received response illumination. Apparatus and systems are also disclosed.Type: GrantFiled: May 8, 2017Date of Patent: May 21, 2019Assignee: Battelle Memorial InstituteInventors: David W. Gotthold, Andrew J. Stevens, Nigel D. Browning, Eric Jensen, Nathan L. Canfield, Alan G. Joly
-
Patent number: 10157973Abstract: An organic light emitting display device comprises a driving transistor for driving an organic light emitting diode; a first transistor controlled by a scan signal and connected between a reference voltage line and a first node of the driving transistor; a second transistor controlled by the scan signal and connected between a data line and a second node of the driving transistor; a first plate with an improved conductive characteristic and connected to the semiconductor layer of the driving transistor and the semiconductor layer of the first transistor; a second plate positioned on the first plate, and connected to the semiconductor layer of the second transistor and a gate electrode of the driving transistor; and a pixel electrode of the organic light emitting diode, positioned on the second plate and connected to the first plate through a contact hole.Type: GrantFiled: May 3, 2016Date of Patent: December 18, 2018Assignee: LG Display Co., Ltd.Inventor: HeeDong Choi
-
Patent number: 9799711Abstract: An organic EL display panel includes plural streaks of first partition walls juxtaposed on the upper side of an underlying layer in such a manner that each of the plural streaks of the first partition walls extends along a first direction, plural streaks of second partition walls that are juxtaposed on the upper side of the underlying layer in such a manner that each of the plural streaks of the second partition walls extends along a second direction intersecting the first direction, and each have an upper surface at a position lower than upper surfaces of the first partition walls, and a light emitting layer formed along the first direction on the upper side of the underlying layer and in gaps between the first partition walls adjacent to each other in such a manner as to get over the plural streaks of the second partition walls.Type: GrantFiled: February 23, 2015Date of Patent: October 24, 2017Assignee: JOLED INC.Inventor: Masakazu Takata
-
Patent number: 9356081Abstract: An organic light emitting display device comprises a driving transistor for driving an organic light emitting diode; a first transistor controlled by a scan signal and connected between a reference voltage line and a first node of the driving transistor; a second transistor controlled by the scan signal and connected between a data line and a second node of the driving transistor; a first plate with an improved conductive characteristic and connected to the semiconductor layer of the driving transistor and the semiconductor layer of the first transistor; a second plate positioned on the first plate, and connected to the semiconductor layer of the second transistor and a gate electrode of the driving transistor; and a pixel electrode of the organic light emitting diode, positioned on the second plate and connected to the first plate through a contact hole.Type: GrantFiled: November 10, 2014Date of Patent: May 31, 2016Assignee: LG Display Co., Ltd.Inventor: HeeDong Choi
-
Patent number: 8315080Abstract: Provided are a luminescent device and a method of manufacturing the same. The luminescent device includes a charge trapping layer having bistable conductance and negative differential resistance (NDR) characteristics, and an organic luminescent layer electrically connected to the charge trapping layer. The charge trapping layer comprise a nanocrystal layer intervened in an organic layer, and the nanocrystal layer comprises a plurality of nanocrystals.Type: GrantFiled: April 23, 2008Date of Patent: November 20, 2012Assignee: IUCF-HYUInventors: Jea Gun Park, Gon Sub Lee, Su Hwan Lee, Dal Ho Kim, Sung Ho Seo, Woo Sik Nam, Hyun Min Seung, Jong Dae Lee, Dong Won Shin
-
Patent number: 7813160Abstract: Memory devices and recordable media are disclosed that take advantage of memory effects in the electronic transport in CdSe nanocrystal (NC) quantum dot arrays. Conduction through a NC array can be reduced with a negative voltage and then restored with a positive voltage. Light can also be used to restore or even increase the NC array conduction. The switching of the conduction in CdSe NC arrays and found the behavior to be highly sensitive to the value and duration of the laser and voltage pulses.Type: GrantFiled: January 11, 2006Date of Patent: October 12, 2010Assignee: The Trustees Of The University Of PennsylvaniaInventors: Marija Drndic, Michael D. Fischbein
-
Publication number: 20100208507Abstract: Provided are a luminescent device and a method of manufacturing the same. The luminescent device includes a charge trapping layer having bistable conductance and negative differential resistance (NDR) characteristics, and an organic luminescent layer electrically connected to the charge trapping layer.Type: ApplicationFiled: April 23, 2008Publication date: August 19, 2010Applicant: IUCF-HYUInventors: Jea Gun Park, Gon Sub Lee, Su Hwan Lee, Dal Ho Kim, Sung Ho Seo, Woo Sik Nam, Hyun Min Seung, Jong Dae Lee, Dong Won Shin
-
Publication number: 20090273870Abstract: The present invention is provided to suppress occurrence of an erroneous operation in a protection circuit due to a relatively small power source fluctuation such as a power source noise. The protection circuit has a first resistor and a capacitor connected in series between a power source line and a ground line, an inverter whose input is connected between the first resistor and the capacitor, and a MOS transistor whose gate electrode receives an output of the inverter and whose drain electrode and source electrode are connected to the power source line and the ground line. When a high voltage fluctuation occurs in the power source line, a level change at a connection point between the first resistor and the capacitor is delayed according to a time constant. By the delay, the MOS transistor that receives an output of the inverter is temporarily turned on and discharges a high voltage to the ground line.Type: ApplicationFiled: July 10, 2009Publication date: November 5, 2009Inventors: Hiroyasu Ishizuka, Kazuo Tanaka
-
Publication number: 20090040805Abstract: A non-volatile memory device includes lower and upper electrodes over a substrate, a conductive organic material layer between the lower and the upper electrodes, and a nanocrystal layer located within the conductive organic material layer, wherein the nanocrystal layer includes a plurality of nanocrystals surrounded by an amorphous barrier, wherein the device has a multi-level output current according to a voltage level of an input voltage coupled to the lower and the upper electrodes during a data read operation.Type: ApplicationFiled: April 23, 2008Publication date: February 12, 2009Applicant: Hynix Semiconductor Inc.Inventors: Jea-Gun Park, Sung-Ho Seo, Woo-Sik Nam, Young-Hwan Oh, Yool-Guk Kim, Hyun-Min Seung, Jong-Dae Lee
-
Patent number: 7488540Abstract: In a production process of a thin film laminate for constituting an organic EL element or the like, a thin film laminate is provided in which no water stays in a thin film formed of a hydrophilic material and, thus, the function of other thin films overlying the surface of the thin film, such as a luminescent layer, is not deteriorated. The thin film laminate comprises: a substrate; and, provided on the substrate in the following order, a first thin film and a second thin film. The first thin film is formed of a hydrophilic organic material. The hydrophilic organic material has hydrophilic groups which have been converted to lipophilic group. The lipophilic groups are partially or wholly returned to hydrophilic groups upon exposure to heat energy or a radiation. The second thin film is formed of a lipophilic organic material.Type: GrantFiled: February 26, 2004Date of Patent: February 10, 2009Assignee: Dai Nippon Printing Co., Ltd.Inventors: Kiyoshi Itoh, Daigo Aoki
-
Patent number: 7382512Abstract: Various devices and methods employing a resistive phase change material are disclosed.Type: GrantFiled: October 26, 2005Date of Patent: June 3, 2008Inventors: Zhizhang Chen, Qin Liu, Timothy F. Myers, Chien-Hua Chen
-
Patent number: 6960663Abstract: The present invention relates to luminescence materials for an organic electroluminescent device (OELD), and particularly to phenyl pyridine-iridium metal complex compounds of formula (1), and preparation method thereof. In addition, the present invention relates to an organic electroluminescent device using the luminescence materials according to the present invention, which can greatly enhance the efficiency of luminescence and increase the operating life time of the device: wherein R1, R2 and R3 each are the same as defined in the specification.Type: GrantFiled: December 2, 2003Date of Patent: November 1, 2005Assignee: LG Electronics, Inc.Inventors: Ki-Dong Kim, Sang-Dae Kim, Yoon-Soo Han, Yoon-Heung Tak, Dong-Uk Kim, Tae-Jeong Kim, Ung-Chan Yoon, Sung-Hoon Kim, Hee-Wan Moon
-
Patent number: 6734711Abstract: An input transition stabilizer circuit, adapted to stabilize an input transition of a signal appearing at the input of an input circuit, the input transition stabilizer circuit includes a resistor having a first terminal connected to the input of the input circuit;, and a capacitor. A first MOS device is connected by a source and a drain between a second terminal of the resistor and a first terminal of the capacitor, while a second MOS device is connected by a source and a drain between a second terminal of the capacitor and ground. A delay circuit is adapted to provide a signal to a gate of the first MOS device and a gate of the second MOS device corresponding to a signal at the input of the input circuit, but delayed by a first predetermined interval. In some embodiments the delay circuit is provided in two parts, with the signal provided to the first MOS device being delayed by a further amount, as compared with the signal provided to the second MOS device.Type: GrantFiled: April 1, 2003Date of Patent: May 11, 2004Assignee: Texas Instruments IncorporatedInventor: Eugene B. Hinterscher
-
Patent number: 6687149Abstract: In an optical memory device, an electroluminescent matrix has a plurality of individually electrically addressable electroluminescent cells, each having a stack of memory cells. The electroluminescent cells are addressable by applying a biased voltage through a grid of light-transparent electrodes.Type: GrantFiled: March 19, 2001Date of Patent: February 3, 2004Assignee: OptaByte, Inc.Inventors: Boris Chernobrod, Jacob Malkin, Vladimir Schwartz
-
Patent number: 6541911Abstract: An EL lamp for emitting light in multiple color which includes a first light-permeable electrode layer formed at the back side of a transparent substrate, a first luminous material layer containing a first luminous material, an intermediate light-permeable electrode layer, a second luminous material layer containing a second luminous material, a back electrode, and at least two elements of (i) a first color material contained in the first luminous material layer, (ii) a second color material contained in the second luminous material layer, and (iii) luminous color converting layer containing a third color material, disposed between the first luminous material layer and second luminous material layer, and a color coat layer containing a fourth color material, disposed at the front surface side of the transparent substrate. The color material closer to the back electrode of the at least two elements has the color of longer wavelength than the remoter color material.Type: GrantFiled: February 4, 2000Date of Patent: April 1, 2003Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Koji Tanabe, Yosuke Chikahisa
-
Publication number: 20020090184Abstract: Methods and apparatus are described for retrieving information from a storage medium. A first portion of the surface of the storage medium is exposed to stimulating light which diffuses in the storage medium under a second portion of the surface adjacent the first portion. The second portion of the surface is shielded from exposure to the stimulating light. Stimulated light corresponding to the information is received with at least one detector positioned to receive the stimulated light via the second portion of the surface of the storage medium. The stimulated light is released from the storage medium in response to the stimulating light diffused under the second portion of the surface.Type: ApplicationFiled: June 21, 2001Publication date: July 11, 2002Inventor: Michel Sayag
-
Publication number: 20020006051Abstract: The invention has for its object to provide a phosphor thin film which can dispense with any filter and has satisfactory color purity, is particularly well fit for RGB full-color Els, and simplifies a full-color EL panel production process, thereby providing a phosphor thin film which is less susceptible to luminance variations and can be produced in improved yields and so at lower costs and its fabrication process as well as an EL panel. This is achieved by the provision of a phosphor thin film comprising a matrix material containing as a main component an alkali earth aluminate that is an oxide, with sulfur added to the matrix material, and further containing an element that provides a luminescentce center.Type: ApplicationFiled: May 30, 2001Publication date: January 17, 2002Applicant: TDK CorporationInventors: Yoshihiko Yano, Tomoyuki Oike
-
Publication number: 20010001597Abstract: In a semiconductor storage device comprising a plurality of memory cells P formed in a matrix form in a semiconductor substrate, write and read for each of which is carried out through a word line and bit line, wherein each said memory cells includes a first and a second memory transistor MT1 and MT2 connected in series. In this configuration, the semiconductor storage device with high reliability which produces abnormality in operation can be provided.Type: ApplicationFiled: October 22, 1999Publication date: May 24, 2001Inventors: HIROKI YAMAMOTO, YOSHIHIRO TADA
-
Patent number: 6046925Abstract: Photochromic fluorescent protein moiety having two or more stable states having excitation or emission spectra that are shifted from one wavelength region to another wavelength region in the two states are described. The photochromic material switches between states by irradiation with light of appropriate wavelengths. The two states are preferably stable at room temperature and in the dark. The switching between states can be reversible.Type: GrantFiled: April 14, 1997Date of Patent: April 4, 2000Assignee: The Regents of the University of CaliforniaInventors: Roger Y. Tsien, Roger Heim, Andrew B. Cubitt, Robert M. Dickson, William E. Moerner
-
Patent number: 5958541Abstract: Disclosed is a method for storing and retrieving information. More specifically, the present invention is a method for forming predetermined patterns, or data structures, using materials which exhibit enhanced absorption of light at certain wavelengths or, when interrogated with a light having a first wavelength, provide a luminescent response at a second wavelength. These materials may exhibit this response to light inherently, or may be made to exhibit this response by treating the materials with ionizing radiation.Type: GrantFiled: June 28, 1996Date of Patent: September 28, 1999Assignee: Battelle Memorial InstituteInventors: Steven D. Miller, George W. Endres
-
Patent number: 5936878Abstract: The present invention relates to the field of photo-chromic materials, in particular, to photo-chromic compounds and matrices suitable for use in optical memory systems, including three dimensional optical memory systems for computers, multimedia applications and the like. In particular, nonfluorescent spiropyrane is transformed into fluorescent merocyanine by electromagnetic radiation.Type: GrantFiled: December 12, 1997Date of Patent: August 10, 1999Assignee: OMD Devices LLCInventors: Vladimir Arsenov, Jacob N. Malkin
-
Patent number: 5889694Abstract: A read-only data storage and retrieval device is presented having no moving parts and requiring very low power. Addressing can be accomplished sequentially where the address increments automatically or can be accomplished randomly. High density storage is achieved through the use of a highly symmetric diode matrix that is addressed in both coordinate directions; its symmetry makes the Dual-addressed Rectifier Storage (DRS) Array very scaleable, particularly when made as an integrated circuit. For even greater storage flexibility, multiple digital rectifier storage arrays can be incorporated into the device, one or more of which can be made removable and interchangeable.Type: GrantFiled: May 27, 1997Date of Patent: March 30, 1999Inventor: Daniel R. Shepard
-
Patent number: 5843341Abstract: Electro-conductive oxides showing excellent electro-conductivity, electrodes using the electro-conductive oxide and methods for manufacturing the same are described. The electro-conductive oxides are represented by the general formula: M(1).sub.x M(2).sub.y In.sub.z O.sub.(x+3y/2+3s/2)-d. The above electro-conductive oxides show not only excellent electro-conductivity but also excellent transparency all over the visible region and therefore they are particularly useful as, for example, electrodes for liquid crystal displays, EL displays and solar cells, which require light transmission.Type: GrantFiled: April 2, 1997Date of Patent: December 1, 1998Assignee: Hoya CorporationInventors: Masahiro Orita, Hiroyuki Sakai, Megumi Takeuchi, Hiroaki Tanji
-
Patent number: 5454112Abstract: Auxiliary light source for a display is controlled by a light source controller. The light source controller executes a control operation for turning the auxiliary light source on or off in accordance with detecting a change of supplied power, detecting a command sent from an input device, and detecting a special status, for example the operating status mode of a printer or disk drive.Type: GrantFiled: February 8, 1991Date of Patent: September 26, 1995Assignee: Kabushiki Kaisha ToshibaInventors: Masayuki Kadono, Yoshimi Hironaka
-
Patent number: 4864536Abstract: An optical memory system and associated method uses electron trapping materials. Data may be written into an optical memory made of the electron trapping material by application of a visible light source to the material. The visible light source causes electrons to be trapped in the material, which electrons will be released and emit visible light upon application of a read beam infrared source to the material. An arrangement realizes logical functions by parallel memories each memory having stripes of memory material disposed upon a plastic substrate.Type: GrantFiled: June 5, 1986Date of Patent: September 5, 1989Assignee: Quantex CorporationInventor: Joseph Lindmayer
-
Patent number: 4680461Abstract: An apparatus and method for obtaining a memory function in picture intensifier or amplifier tubes by providing such tubes with an output screen formed of an electroluminescent cell. This cell emits visible light rays when an electric voltage is applied between its surfaces, and possesses hysteresis properties. When voltage is applied to the screen, the picture sent by the electron beam is stored, and re-established when desired, for a given period. The invention can be applied to radiology.Type: GrantFiled: September 12, 1985Date of Patent: July 14, 1987Assignee: Thomson-CSFInventors: Jean C. Boit, Jean P. Galves
-
Patent number: 4221002Abstract: It has been discovered for the practice of this disclosure that there is a threshold for switching with light an AC coupled electroluminescence (EL) device within the .DELTA.V of the luminance-voltage hysteresis loop thereof. Practice of this disclosure provides hybrid matrix-addressing of an electroluminescence display device with memory through luminance-voltage hysteresis by "ANDING" electrical and optical signals. It has particular utility for a large aspect ratio display, e.g., a single line display, i.e., one for which there is more information content in one direction than in another direction.Type: GrantFiled: November 6, 1978Date of Patent: September 2, 1980Assignee: International Business Machines CorporationInventors: Paul M. Alt, Omesh Sahni
-
Patent number: 4207617Abstract: An EL display panel comprising an electroluminescent element made of, for example, a ZnS:Mn layer sandwiched between a pair of dielectric layers exhibits hysteresis properties within light intensity versus applied voltage characteristics. A front electrode is formed on one of the dielectric layers, and a rear electrode is formed on the other dielectric layer in order to apply a sustaining voltage signal across the electroluminescent element for maintaining the memoried display information. An electron beam is applied to a desired position on the EL display panel through the rear electrode at a time when the sustaining voltage signal bears the zero level in order to erase the memoried information. The memoried display information is electrically read out by detecting a polarization relaxation current which flows through a memoried display position when an electron beam is applied thereto.Type: GrantFiled: June 28, 1978Date of Patent: June 10, 1980Assignee: Sharp Kabushiki KaishaInventors: Shuhei Yasuda, Toshihiro Ohba, Chugi Suzuki, Masayoshi Koba, Jun Kudo
-
Patent number: 4193095Abstract: A driver system of a display panel including a matrix of luminescent elements with a bi-stable operation condition comprises a circuit arrangement for combining a plurality of divided lighting periods to provide a gray-scale display and a circuit arrangement for increasing or decreasing the respective widths of the divided lighting periods in correlation with each other, whereby a control of luminance with gray-scale is provided.Type: GrantFiled: February 7, 1978Date of Patent: March 11, 1980Assignee: Hitachi, Ltd.Inventor: Masashi Mizushima
-
Patent number: 4078229Abstract: Method and media are provided for producing three-dimensional sensible objects by the intersection of radiation beams, whereby an active region is produced as a result of the intersection of said beams raising a molecule in the active region to its excited state. Particularly, non-radiation emissive active regions are formed which generate the sensible object.Type: GrantFiled: January 27, 1975Date of Patent: March 7, 1978Inventors: Wyn K. Swanson, Stephen D. Kremer
-
Patent number: RE41733Abstract: A read-only data storage and retrieval device is presented having no moving parts and requiring very low power. Addressing can be accomplished sequentially where the address increments automatically or can be accomplished randomly. High density storage is achieved through the use of a highly symmetric diode matrix that is addressed in both coordinate directions; its symmetry makes the Dual-addressed Rectifier Storage (DRS) Array very scaleable scalable, particularly when made as an integrated circuit. For even greater storage flexibility, multiple digital rectifier storage arrays can be incorporated into the device, one or more of which can be made removable and interchangeable.Type: GrantFiled: March 29, 2001Date of Patent: September 21, 2010Assignee: Contour Semiconductor, Inc.Inventor: Daniel R. Shepard
-
Patent number: RE42310Abstract: A read-only data storage and retrieval device is presented having no moving parts and requiring very low power. Addressing can be accomplished sequentially where the address increments automatically or can be accomplished randomly. High density storage is achieved through the use of a highly symmetric diode matrix that is addressed in both coordinate directions; its symmetry makes the Dual-addressed Rectifier Storage (DRS) Array very scaleable, particularly when made as an integrated circuit. For even greater storage flexibility, multiple digital rectifier storage arrays can be incorporated into the device, one or more of which can be made removable and interchangeable.Type: GrantFiled: July 19, 2007Date of Patent: April 26, 2011Assignee: Contour Semiconductor, Inc.Inventor: Daniel R. Shepard