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| Number | Title | Issue Date |
| 5276380 | Organic electroluminescent image display device An improvement in a light emitting device having an image display array consisting of a plurality of light emitting pixels arranged in intersecting columns and rows. The pixels are each located on a common electrically insulative light transmissive suppor... | 01/04/1994 |
| 5276381 | Organic electroluminescent device An organic electroluminescent device which includes a cathode, an organic emitting layer which includes a quinoline derivative and a quinacridone or quinazoline compound, an organic positive hole transport layer, and an anode, laminated in sequence, has a... | 01/04/1994 |
| 5243332 | Information entry and display Display panels are provided which enable effective document scanning, information display, and entry of information using a stylus. The panels include (in the same panel) light emitting and light detecting functions which are arranged to permit effective ... | 09/07/1993 |
| 5239227 | High efficiency panel display An electroluminescent display has a viewing surface with electroluminescent cells arranged in a dot matrix array over the surface, each cell having a height orthogonal to the surface from five to ten times any dimension parallel to the surface and each ce... | 08/24/1993 |
| 5231387 | Apparatus and method for addressing microtip fluorescent screen A microdot fluorescent screen having a reduced number of addressing circuits. This screen of N rows (16) is divided into k zones Zi, each of the N/k rows (16) belonging to N/k families of rows. The k rows (16) of the same family are electricall... | 07/27/1993 |
| 5227696 | Power saver circuit for TFEL edge emitter device An improved power saving drive circuit is provided for a multiplexed thin film electroluminescent (TFEL) array having a number of edge emitter devices. The drive circuit includes a charge circuit and a discharge circuit operatively connected to a load cap... | 07/13/1993 |
| 5216324 | Matrix-addressed flat panel display having a transparent base plate A matrix-addressed flat panel display is disclosed herein and includes a face structure having a phosphor coated viewing surface and a transparent backing structure spaced a predetermined distance from and in confronting relationship with the viewing surf... | 06/01/1993 |
| 5214416 | Active matrix board An active matrix board comprising: an electrically insulating transparent substrate; a pixel electrode disposed in two dimensions on the substrate for each pixel; a scanning electrode arranged in common to the pixel electrodes disposed along a predetermin... | 05/25/1993 |
| 5191321 | Single cell BiMOS electroluminescent display driver A low power, dual mode BIMOS circuit generates a required drive voltage for illuminating an electroluminescent display panel from a low voltage, preferably a single cell. The BIMOS circuit comprises at least one bipolar transistor, at least one MOS transi... | 03/02/1993 |
| 5157309 | Cold-cathode field emission device employing a current source means A cold-cathode field emission device controls electron emission by using a current source coupled to the emitter. The open circuit voltage of the current source is less than the voltage at which the FED would emit electrons. Application of an accelerating... | 10/20/1992 |
| 5146213 | Electroluminescent display with memory effect and half-tones Electroluminescent display with memory effect and half-tones. Each row electrode (L) is subdivided into several subelectrodes (L1,L2) and/or each column electrode (C) is subdivided into several subelectrodes (C1,C2). The row subelectrodes receive differen... | 09/08/1992 |
| 5131065 | High luminance and contrast flat display panel A flat display panel (53) including a sandwich of thin film layers (52) with indices of refraction that increase the luminance and contrast of the display is disclosed. The sandwich of thin film layers (52), progressing backward from the front major surfa... | 07/14/1992 |
| 5126727 | Power saving drive circuit for TFEL devices A power saving voltage drive circuit for a TFEL edge emitter device of the type having a plurality of pixels, with each pixel having a first terminal and all pixels on a device sharing a common second terminal, is comprised of a demultiplexing channel dri... | 06/30/1992 |
| 5093654 | Thin-film electroluminescent display power supply system for providing regulated write voltages A power supply system for controlling the drive voltages applied to a thin film electroluminescent (TFEL) display panel is disclosed. The system includes a power supply that generates the drive voltages to the TFEL display panel and causes it to emit ligh... | 03/03/1992 |
| 5087858 | Gas discharge switched EL display A flat panel X-Y matrix display has gas discharge switches which are disposed in capacitive series contact with associated electroluminescent cells. The gas discharge switches are selectively ionized to continuously energize and light the EL cells until t... | 02/11/1992 |
| 5086252 | Thin film electroluminescence device A thin film electroluminescence device is disclosed which comprises an electrode formed on a transparent substrate, one dielectric layer formed on the electrode, an emitting layer composed of a fluoride compound of the alkaline earth metal as a host mater... | 02/04/1992 |
| 5079483 | Electroluminescent device driving circuit An electroluminescent device driving circuit comprising first and second switching devices, a dividing capacitor, an electroluminescent device, and a driving power supply is described. The electroluminescent device illuminates when the second switching de... | 01/07/1992 |
| 5075596 | Electroluminescent display brightness compensation The luminosity of electroluminescent display pixels arranged at intersection regions between row and column electrodes is controlled so as to compensate for the effect of interelectrode coupling by reducing the voltage differentials applied between the ro... | 12/24/1991 |
| 5053679 | Photoconductive-electroluminescent memory effect polychromatic display A photoconductive-electroluminescent, memory effect polychromatic display defining a first and second inverted structure. The first structure incorporates a first transparent substrate equipped with a first electroluminescent layer El1 placed b... | 10/01/1991 |
| 5053675 | Electroluminescent display screen with a memory and a particular configuration of electrodes Electroluminescent display screen with a memory and a particular configuration of electrodes. The display screen comprises on a nonconducting substrate a stacked electroluminescent film and a photoconductive film, both of these films being inserted betwee... | 10/01/1991 |
| 5043631 | Thin film electroluminescent edge emitter structure on a silicon substrate A thin film electroluminescent edge emitter assembly includes a substrate layer having a configuration to define at least one lateral edge surface and at least one integrated circuit formed therein. The integrated circuit has an input for receiving logic ... | 08/27/1991 |
| 5043632 | TFEL edge emitter structure with uniform light emission filter A TFEL edge emitter structure with an EL stack having a linear array of spaced-apart pixels with front edge faces emitting light of non-uniform intensity from different regions has an uniform light emission filter provided across the light-emitting faces ... | 08/27/1991 |
| 5043715 | Thin film electroluminescent edge emitter structure with optical lens and multi-color light emission systems A thin film electroluminescent edge emitter structure includes a common electrode layer and control electrodes disposed above the common electrode layer. At least one dielectric layer is disposed between the common electrode layer and control electrodes, ... | 08/27/1991 |
| 5030943 | Portable electroluminescent back light A back light for a liquid crystal display has a self-contained power source and can be attached to the unit having the liquid crystal display when needed in a dark ambient, and removed from the display or not carried by the user of the display when not ne... | 07/09/1991 |
| 5010325 | Driving network for TFEL panel employing a video frame buffer A driving network for a TFEL panel includes a frame capture buffer for flat panels having split-screen architecture to increase the video bandwidth and to allow for a high frame refresh rate without changing the video input rate. Input serial video data i... | 04/23/1991 |
| 5004956 | Thin film electroluminescent edge emitter structure on a silcon substrate A thin film electroluminescent edge emitter assembly includes a substrate layer having a configuration to define at least one lateral edge surface and at least one integrated circuit formed therein. The integrated circuit has an input for receiving logic ... | 04/02/1991 |
| 4999539 | Electrode configuration for reducing contact density in matrix-addressed display panels An electrode configuration for reducing contact density in matrix-addressed display panels includes a first set of electrodes having termination points for connection to external driving electronics situated near the edge of a supporting substrate, and a ... | 03/12/1991 |
| 4958105 | Row driver for EL panels and the like with inductance coupling A simplified row driver switching circuit for display panels and the like, including particularly electroluminescent (EL) panels, as well as plasma panels, using inductance coupling between the power supply and the row electrodes. The circuit limits energ... | 09/18/1990 |
| 4956577 | Interactive luminous panel display device A gas discharge display apparatus in the form of a panel housing a plurality of electroluminescent gas-filled discharge chambers adapted for interactively controlled illumination. The apparatus generally includes an electrically conductive surface underly... | 09/11/1990 |
| 4954752 | Row driver for EL panels and the like with transformer coupling A simplified row driver switching circuit for display panels and the like, including particularly electroluminescent (EL) panels, as well as plasma panels, using transformer coupling between the power supply and the row electrodes. The circuit limits ener... | 09/04/1990 |
| 4949019 | Method of driving thin film EL panel for aging An aging drive method for a thin film EL panel includes the performing a preparatory step of short-circuiting all transparent electrodes by a first connecting line, short-circuiting every other metal electrodes by a second connecting line and short-circui... | 08/14/1990 |
| 4937647 | SCR-DMOS circuit for driving electroluminescent displays Disclosed is a small-area solid state driver (30) adapted for switching high voltages. The driver (30) includes a DMOS device (48) driving a bipolar SCR (58). A SCR NPN transistor (54) and PNP transistor (56) are parasitic in nature, thus reducing the waf... | 06/26/1990 |
| 4929870 | Method for the transmission of control signals to the row drive circuits in the control of thin-film electroluminescent displays The present publication describes a method for the transmission of control signals to the row drive circuits in the control of thin-film electro-luminescent displays. According to the method, as control signals are used, a data signal, a clock signal, a s... | 05/29/1990 |
| 4924144 | Matrix screen, its production process and matrix display means with several tones, controlled on an all or nothing basis and incorporating said screen Matrix screen, its production process and matrix display means with several tones, controlled on an all or nothing basis and incorporating said screen. The screen has electroluminescent zones distributed in matrix-like manner and placed between crossing r... | 05/08/1990 |
| 4908603 | Light emitting alarm board A light-emitting alarm board uses thin-film EL elements which emit light of different colors individually or simultaneously, depending on the voltages applied thereon, thereby serving as display lamps for indicating the conditions of operation of a system... | 03/13/1990 |
| 4904989 | Display device In a display device having, at least, picture elements which are arrayed on a transparent insulating substrate, and transistor portions which are formed of a semiconductor layer formed on the transparent insulating substrate; a display device characterize... | 02/27/1990 |
| 4874986 | Trichromatic electroluminescent matrix screen, and method of manufacture An electroluminescent matrix screen comprising nm light emitting cells disposed in the form of a matrix of n lines and m columns. Each cell (ce) is constituted by a two line by two column submatrix having four light emitting elements (el1 | 10/17/1989 |
| 4864182 | Driving circuit for thin film EL display device A thin film EL display device wherein an EL layer is interposed between scanning side electrodes and data side electrodes which are arranged to cross one another. A data side driver IC, including switching elements for charging and discharging, is connect... | 09/05/1989 |
| 4845489 | Electroluminescent display drive circuitry An electroluminescent display drive circuit which compensates for the decrease in capacitance of the electroluminescent display panel that is experienced as the panel ages; this is accomplished by use of an RC time constant which will effectively increase... | 07/04/1989 |
| 4837566 | Drive circuit for operating electroluminescent display with enhanced contrast An improved drive circuit for operating an electroluminescent display includes a circuit for biasing column and row drivers to maximize the energization voltage for illuminated pixels without reducing the contrast of the display. Interface circuitry is al... | 06/06/1989 |
