Patent application number | Description | Published |
20090277502 | SOLAR CELL, SOLAR CELL MODULE USING THE SOLAR CELL AND METHOD FOR MANUFACTURING THE SOLAR CELL MODULE - In a solar cell, a body portion that includes at least one PN junction portion that is formed by laminating a P layer and an N layer in the front to back direction is formed. End faces of the PN junction portion form part of side faces of the body portion, and a surface electrode is formed on a surface of the body portion and a back surface electrode is formed on a back surface of the body portion. The surface electrode includes a terminal attachment portion to which a surface electrode connecting lead wire through which an electromotive force is extracted is bonded by wire-bonding or spot-welding. An anti-reflection film is formed on a surface of the surface electrode that includes the terminal attachment portion and the surface of the body portion other than a portion where the surface electrode is formed. | 11-12-2009 |
20090283127 | Method of Manufacturing Photoelectric Conversion Element and the Photoeletric Conversion Element - Disclosed is a method of manufacturing a photoelectric conversion element including a substrate and a stacked body configured of a plurality of compound semiconductor layers of different compositions sequentially stacked on the substrate, and having at least one pn junction in the stacked body. This method includes the steps of forming the stacked body configured of the plurality of compound semiconductor layers of different compositions sequentially stacked on the substrate; forming a protective film on the stacked body; forming a groove by removing at least a portion of the stacked body by at least one method selected from the group consisting of a mechanical removing method, dry etching and laser scribing; etching a side wall of the groove using an etching solution after forming the protective film and the groove; and cutting a portion corresponding to the groove for separation into a plurality of photoelectric conversion elements. Also disclosed is a photoelectric conversion element obtained by this method. | 11-19-2009 |
20110092524 | Agent for Enhancing Corneal Epithelial Barrier Function - The invention relates to a pharmacological action of a compound which functions as a PPARγ agonist on the barrier function of the corneal epithelium. A PPARγ agonist such as rivoglitazone, DRF-2593, GW-544 or BMS-298585 exhibits an excellent effect of enhancing the corneal epithelial barrier function in a test for enhancement of corneal epithelial barrier function, and therefore is useful as a preventive agent or a therapeutic agent for ocular infection or ocular unidentified complaint caused by a decrease in the corneal epithelial barrier function. Further, the PPARγ agonist can enhance the corneal epithelial barrier function of diabetic patients, patients with decreased corneal epithelial barrier function due to aging and patients who underwent refractive surgery such as PRK (photorefractive keratectomy) or LASIK (laser in situ keratomileusis) or cataract surgery. | 04-21-2011 |
20110224200 | THERAPEUTIC AGENT FOR CHORIORETINAL DEGENERATIVE DISEASE CONTAINING PYRIDINE-3-CARBALDEHYDE 0-(PIPERIDIN-1-YL-PROPYL)-OXIME DERIVATIVE AS ACTIVE INGREDIENT - Provided is a novel prophylactic or therapeutic agent for a chorioretinal degenerative disease. The compound of formula (1) or its salt has inhibitory effects on photoreceptor cell death or visual cell death in a mouse model of light damage. Therefore, the compound or its salt is useful as a prophylactic or therapeutic agent for a chorioretinal degenerative disease such as age-related macular degeneration, retinitis pigmentosa. In the formula (1), A is a group (p1), (p2) or (p3); R | 09-15-2011 |
Patent application number | Description | Published |
20090205901 | SOUND ABSORBING STRUCTURE AND VEHICLE COMPONENT HAVING SOUND ABSORBING PROPERTY - A sound absorbing structure is constituted of a housing having a hollow portion and an opening and a vibration member composed of a board or diaphragm. The vibration member is a square-shaped material having elasticity composed of a synthetic resin and is bonded to the opening of the housing, thus forming an air layer closed inside the sound absorbing structure by the housing and the vibration member. In the sound absorbing structure, when the lateral/longitudinal dimensions of the air layer and characteristics of the vibration member (e.g. a Young's modulus, thickness, and Poisson's ratio) are set such that the fundamental frequency of a vibration occurring in a bending system falls within 5% and 65% of the resonance frequency of a spring-mass system, a vibration mode having a large amplitude occurs in a frequency band lower than the resonance frequency of the spring-mass system, this improving the sound absorption coefficient. | 08-20-2009 |
20090223738 | SOUND ABSORBING STRUCTURE AND VEHICLE COMPONENT HAVING SOUND ABSORPTION PROPERTY - A sound absorbing structure is constituted of a housing and a vibration member. The vibration member composed of a synthetic resin having elasticity is constituted of a first member and a second member whose surface density is smaller than the surface density of the first member, wherein the first member is fixed into a center hole of the second member so as to form a single board of the vibration member. Since the surface density of the center portion of the vibration member is higher than the surface density of the peripheral portion of the vibration member, the frequency of absorbed sound further decreases in comparison with the foregoing structure in which the vibration member is increased in weight to change the frequency of absorbed sound. This makes it possible to arbitrarily change the frequency of absorbed sound without substantially changing the overall weight of the sound absorbing structure. | 09-10-2009 |
20100089691 | SOUND ABSORBING STRUCTURE BUILT INTO LUGGAGE COMPARTMENT OF VEHICLE - A sound absorbing structure is constituted of a vibration plate and a rear air layer and is installed in a luggage compartment or trunk which is separated from a cabin in a vehicle. Sound waves entering into the luggage compartment drive the vibration plate to vibrate so that acoustic energy is converted into mechanical energy and is consumed by way of vibration of the vibration plate. By appropriately setting parameters and dimensions, the sound absorbing structure efficiently absorbs low-frequency sound such as road noise occurring due to friction of wheels of the vehicle traveling on a road. | 04-15-2010 |
20110056763 | ACOUSTIC RESONANCE DEVICE - An acoustic resonance device is installed in a compartment of a vehicle so as to reduce a low-frequency sound pressure (or noise) dependent upon a natural vibration. Specifically, an acoustic resonance device is a panel/diaphragm resonator, a resonance pipe, or a Helmholtz resonator, the inner space of which communicates with the compartment via an opening. The acoustic resonance device is positioned in proximity to an antinode of sound pressure owing to a natural vibration occurring in a driver/passenger space inside the compartment. Alternatively, the acoustic resonance device increases a particle velocity at a specific natural frequency or decreases sound pressure at an excitation frequency which occurs due to an external condition of the vehicle. The acoustic resonance device can be installed in a roof, a seat, a pillar supporting the roof, or a door of a vehicle. | 03-10-2011 |
20120097477 | STANDING WAVE ATTENUATION DEVICE - A standing wave attenuation device is installed in a cabin of a vehicle so as to reduce a standing wave caused by external noise such as road noise. The standing wave attenuation device provides a closed loop including a feedback comb filter with a feedback loop, a microphone, a speaker, and a delay element. The delay element adjusts the phase of the output signal of the feedback comb filter such that the time needed for one-time circulation of a signal through the feedback loop matches a half period of the standing wave. An original sound including the standing wave is picked up by the microphone and subjected to processing so that the speaker produces a sound wave with the inverse phase against the phase of a sound wave constituting the standing wave, so that the standing wave is canceled out by the sound wave emitted from the speaker. | 04-26-2012 |
Patent application number | Description | Published |
20110050269 | Method for evaluating semiconductor device - A yield and productivity of a semiconductor module are improved. A sheet having electrical conductivity is fixed to a main surface of a semiconductor substrate on which a plurality of semiconductor devices having a surface structure and a rear surface electrode are arranged. The semiconductor substrate is divided into semiconductor chips on a first support stage in the state where the sheet is fixed to its main surface. The plurality of divided semiconductor chips are mounted on a second support stage via the sheet and further, the plurality of mounted semiconductor chips are continuously subjected to a dynamic characteristic test on the second support stage. The proposed semiconductor device evaluation method permits a fissure growing and propagating from a crack occurring in the dynamic characteristic test of the vertical semiconductor devices to be suppressed, and the yield and productivity of the semiconductor module to be improved. | 03-03-2011 |
20110187790 | MAINTENANCE METHOD FOR LIQUID EJECTING APPARATUS - There is a first process of pressurizing the liquid introduced into the discharge pipe by driving a pump device and transferring the liquid to one end side of the discharge pipe; a second process of applying an electric field between a liquid reception unit, which is disposed to face the surface of the nozzle openings of the liquid ejecting head in a non-contact state, communicates with the other end side of the discharge pipe and is ejected with liquid from the nozzles, and the surface of the nozzle openings; a third process of detecting a change in voltage based on electrostatic induction when the pressurizing of the liquid in the discharge pipe due to the pump device is released; and a fourth process of detecting the discharge state of the liquid from the discharge pipe on the basis of detection result of the change in voltage. | 08-04-2011 |
20110309850 | Testing device and testing method - A testing device includes a pressure vessel, a mounting stand disposed in an internal space of the pressure vessel, on which a device to be tested is mounted, test electrodes, disposed in the internal space of the pressure vessel, that supply a test voltage to the device to be tested mounted on the mounting stand, and a pressurization unit that raises the pressure of the internal space of the pressure vessel. The test voltage is supplied from the test electrodes to the device to be tested mounted on the mounting stand, and testing of the device to be tested is carried out, in a condition that the pressure of the internal space of the pressure vessel is raised by the pressurization unit. | 12-22-2011 |
20120081139 | SEMICONDUCTOR TEST DEVICE, SEMICONDUCTOR TEST CIRCUIT CONNECTION DEVICE, AND SEMICONDUCTOR TEST METHOD - A semiconductor test device and method for sequentially carrying out tests including an AC test, DC test, and thermal resistance test on a power semiconductor device are provided. The semiconductor test device includes a holding unit that positions the power semiconductor device. Test units each generate a test signal for the power semiconductor device and determine a test result generated in response to the test signal. A connection unit switches between the test units and selectively connects the test units electrically to electrodes of the power semiconductor device. The connection unit is controlled such that the test units are sequentially connected to the power semiconductor device to perform a plurality of the tests. The connection unit may include parallel plate electrodes in proximity to each other across an insulating sheet. The parallel plate electrodes may connect the power semiconductor device to positive and negative power sources of the test unit. | 04-05-2012 |
20130169708 | LIQUID EJECTING APPARATUS AND MAINTENANCE METHOD THEREOF - A liquid ejecting apparatus includes heating portions for heating liquid, a liquid ejecting head for ejecting the liquid heated by the heating portions, and a maintenance device for performing maintenance of the liquid ejecting head by causing the liquid to be discharged from the liquid ejecting head through sucking operation. The maintenance device performs a first suction for cleaning the liquid ejecting head by causing the head to discharge the liquid, waits until liquid is heated by the heating portions, and then performs a second suction with a suction force weaker than that of the first suction. | 07-04-2013 |
20130258016 | INK JET RECORDING METHOD, ULTRAVIOLET CURABLE INK AND INK JET RECORDING APPARATUS - An ink jet recording method includes discharging a ultraviolet curable ink of which viscosity is 7 mPa·s or more at 20° C. from a head toward a recording medium, and curing the ultraviolet curable ink adhered to the recording medium, wherein, in the discharging, the temperature of the ultraviolet curable ink discharged is 20 to 30° C., and the viscosity of the ultraviolet curable ink at the temperature is 13 mPa·s or less. | 10-03-2013 |
20140168295 | LIQUID SUPPLY DEVICE AND LIQUID EJECTING APPARATUS - Provided is a liquid supply device that includes a liquid storage portion that stores liquid containing sedimenting components which are sedimented in solvent, a liquid supply path that extends from the liquid storage portion to a liquid ejecting portion and through which the liquid to be supplied to the liquid ejecting portion can flow, a liquid flowing portion that is operated to cause the liquid to flow through at least part of the liquid supply path, a temperature detection portion that can detect the temperature of at least part of the liquid in the liquid supply path, and an operation control portion that controls an operation of the liquid flowing portion in correspondence with a detected temperature of the liquid, which is detected by the temperature detection portion, such that a flow condition of the liquid in the liquid supply path changes. | 06-19-2014 |
20140247311 | LIQUID EJECTING APPARATUS - A liquid ejecting apparatus includes an ejecting head that is enabled to eject a liquid; a liquid supply portion for supplying the liquid from a liquid supply source to the ejecting head; a holding frame that holds the ejecting head, the liquid supply source and the liquid supply portion; and a movement mechanism that moves the holding frame. The liquid supply portion has a flow channel forming portion that forms a liquid flow channel connecting the liquid supply source and the ejecting head and a flow channel holding portion that holds the flow channel forming portion in a swayable manner. | 09-04-2014 |
20150124018 | LIQUID EJECTING APPARATUS - A liquid ejecting apparatus includes a liquid ejecting head that ejects a plurality of kinds of photocurable type liquids, an irradiation unit that irradiates light that cures the liquids, a liquid receiving portion that is capable of receiving the liquids that are ejected from the liquid ejecting head, and a control unit that controls the ejection of the liquids from the liquid ejecting head. Among the plurality of kinds of liquids that are ejected, the control unit ejects a liquid that is cured with most ease when the light is irradiated before at least one different liquid other than the liquid in a case in which the plurality of kinds of liquids are ejected into the liquid receiving portion from the liquid ejecting head. | 05-07-2015 |
Patent application number | Description | Published |
20090105313 | Preventive or therapeutic agent for keratoconjunctival disorder - An object of the present invention is to provide a new medicinal use of 2-phenyl-1,2-benzisoselenazol-3(2H)-one or a salt thereof. 2-Phenyl-1,2-benzisoselenazol-3(2H)-one or a salt thereof exhibits an excellent prevention and improvement effect in corneal disorder models, and is therefore useful as a preventive or therapeutic agent for a keratoconjunctival disorder such as dry eye, superficial punctate keratopathy, corneal epithelial defects, corneal erosion, corneal ulcer, conjunctival epithelial defects, keratoconjunctivitis sicca, superior limbic keratoconjunctivitis, filamentary keratoconjunctivitis, keratitis or conjunctivitis. | 04-23-2009 |
20100120873 | PROPHYLACTIC OR THERAPEUTIC AGENT FOR AGE-RELATED MACULAR DEGENERATION - An object of the present invention is to find a novel medicinal use of 2-phenyl-1,2-benzisoselenazol-3(2H)-one or a salt thereof. 2-Phenyl-1,2-benzisoselenazol-3(2H)-one or a salt thereof exhibits an excellent inhibitory effect on neovascularization in the choroid and also has a protective effect on retinal pigment epithelial cell damage, and therefore is useful as a prophylactic or therapeutic agent for age-related macular degeneration. | 05-13-2010 |
20120232119 | METHOD FOR TREATING A KERATOCONJUNCTIVAL DISORDER - A method for treating a keratoconjunctival disorder, wherein the keratoconjunctival disorder comprises at least one disorder selected from the group consisting of a superficial punctate keratopathy, a corneal epithelial defect, corneal erosion, a corneal ulcer, a conjunctival epithelial defect, keratoconjunctivitis sicca, superior limbic keratoconjunctivitis, filamentary keratoconjunctivitis, keratitis and conjunctivitis, and wherein the method comprises orally administering from 3 mg/kg to 30 mg/kg per day of 2-phenyl-1,2-benzisoselenazol-3(2H)-one or a salt thereof to a patient in need thereof. | 09-13-2012 |
Patent application number | Description | Published |
20090141264 | Method and Apparatus for Observing and Inspecting Defects - A defect inspecting apparatus includes a sample mounting device for mounting a sample; lighting and detecting apparatus for illuminating a patterned sample mounted on a mount and detecting the optical image of the reflected light obtained therefrom. Also included is a display for displaying the optical image detected by this lighting and detecting apparatus; an optical parameter setting device for setting and displaying optical parameters for the lighting and detecting apparatus on the display; and optical parameter adjusting apparatus for adjusting optical parameters set for the lighting and detecting apparatus according to the optical parameters set by the optical parameter setting apparatus; a storage device for storing comparative image data; and a defect detecting device for detecting defects from patterns formed on the sample by comparing the optical image detected by the optical image detecting apparatus with the comparative image data stored in the storage. | 06-04-2009 |
20090214102 | DEFECT INSPECTION METHOD AND APPARATUS - A method of inspecting patterns, including: adjusting a brightness of at least one of a first bright field image and a second bright field image detected from a specimen and directed to similar patterns on differing parts of the specimen, so as to more closely match a brightness; comparing the images which are adjusted in brightness to match with each other to detect dissimilarities indicative of a defect of the pattern, wherein in adjusting the brightness, the brightness between the first bright field image and the second bright field image is adjusted by performing a gradation conversion of at least one of the brightness between the first bright field image and the second bright field image; and wherein in the comparing, said defect of the pattern is detected by using information of a scattered diagram of brightness of the first bright field image and the second bright field image. | 08-27-2009 |
20110170765 | DEFECT INSPECTION METHOD AND APPARATUS - Arrangements for inspecting a specimen on which plural patterns are formed; capturing a first image of a first area; capturing a second image of a second area in which patterns which are essentially the same with the patterns formed in the first area; creating data relating to corresponding pixels of the first and second images, for each pixel; determining a threshold for each pixel for detecting defects directly in accordance with the first and second images; and detecting defects on the specimen by processing the first and second images by using the threshold for each pixel and information of a scattered diagram of brightness of the first and second images, wherein the threshold is determined by using information of brightness of a local region of at least one of the first and second images, with the local region including an aimed pixel and peripheral pixels of the aimed pixel. | 07-14-2011 |
20120128230 | DEFECT INSPECTION METHOD AND APPARATUS - An inspection method, including: illuminating a light on a wafer on which plural chips having identical patterns are formed; imaging corresponding areas of two chips formed on the wafer to obtain inspection images and reference images with an image sensor; and processing the obtained inspection image and the reference image to produce a difference image which indicates a difference between the inspection image and the reference image and detect a defect by comparing the difference image with a threshold, wherein a threshold applied to a difference image which is produced by comparing the inspection image and the reference image obtained by imaging peripheral portion of the wafer is different from a threshold applied to a difference image which is produced by comparing the inspection image and the reference image obtained by imaging central portion of the wafer. | 05-24-2012 |
20120287126 | DISPLAY DEVICE AND DISPLAY METHOD - A display device includes a liquid crystal panel with video display lines, a display controller operable to have display data rendered on the liquid crystal panel, the display data including first field data of a video signal input, and second field data of the video signal as field data subsequent in temporal order and different in content from the first field data, a backlight unit disposed behind the liquid crystal panel and provided with light sources adapted to emit light for irradiation to respective regions on the liquid crystal panel sectioned in accordance with a scan direction, and a backlight controller operable to have the light sources transitioned between a light-out state and a light emitting state with a transition time shorter than a scan time of first field data and a scan time of second field data by the display controller. | 11-15-2012 |
20120307142 | VIDEO SIGNAL PROCESSING APPARATUS AND METHOD - A frequency distribution monitor unit partitions, into a plurality of classes, a size of a vertical component of a motion vector, and detects a frequency of the number of occurrences at which the vertical component occurs in each of the classes. In a case where the vertical component of the motion vector exceeds a predetermined threshold value in predetermined specific classes, the offset control unit creates offset signals which shift read addresses in the vertical direction in delay units. A selection control unit controls to shift, in the vertical direction, pixel data selected by delay selection units. | 12-06-2012 |
20120308083 | IMAGE PROCESSING APPARATUS AND INTERPOLATION FRAME GENERATING METHOD - An image processing apparatus includes a frame memory, a motion vector detector, a screen edge detector and an interpolation frame generator. The frame memory frame-delays an input signal and outputs the input signal as a delayed input signal. The motion vector detector detects a motion vector between frames based on the input signal and the delayed input signal. The screen edge detector detects a pixel corresponding to a screen edge in the input signal. The interpolation frame generator generates an interpolation frame from the input signal and delayed input signal based on the motion vector and the pixel corresponding to the screen edge. The interpolation frame generator generates the interpolation frame using the pixel corresponding to the screen edge or the pixel inside relative to the pixel corresponding to the screen edge when the motion vector points a pixel outside relative to the pixel corresponding to the screen edge. | 12-06-2012 |
Patent application number | Description | Published |
20110111602 | PLASMA PROCESSING METHOD - Disclosed is a plasma processing method that excels in mass production consistency as it suppresses the flaking of a reaction product deposited on a portion outside the effective range of a Faraday shield in a vacuum vessel. The plasma processing method, which plasma-processes a sample having a layer made of an etch-resistant material by using a plasma processing apparatus having a discharger and a processor, includes a first step of performing an aging process that is to be performed before etching the sample, a second step of performing etching by plasma-processing the layer that is made of an etch-resistant material and formed on the sample, a third step of stabilizing a film deposited on the inner wall of a chamber forming the processor by performing plasma processing after the second step, and an additional step of repeating the second step and the third step. | 05-12-2011 |
20130146563 | PLASMA PROCESSING METHOD - A method for plasma-etching a magnetic film and plasma-cleaning, in which deposits in an etching processing chamber are efficiently removed while corrosion of a wafer is suppressed, is provided. A plasma processing method for plasma-etching a to-be-processed substrate having a magnetic film in an etching processing chamber includes the steps of plasma-etching the magnetic film using a first gas not containing chlorine, transferring out the to-be-processed substrate from the etching processing chamber, first plasma-cleaning of the etching processing chamber using a second gas containing chlorine, and second plasma-cleaning using a third gas containing hydrogen after the first plasma cleaning. | 06-13-2013 |
20140144873 | PLASMA ETCHING METHOD - A plasma etching method performs plasma etching on a sample, which has laminated films containing a variable layer of a magnetic film, a barrier layer of an insulating material, and a fixed layer of a magnetic film, using a hard mask, which includes at least one of a Ta film and a TiN film. The plasma etching method includes a first step of etching the laminated films using N | 05-29-2014 |
Patent application number | Description | Published |
20120244787 | POLISHING APPARATUS AND POLISHING METHOD - The polishing apparatus has a polishing unit capable of polishing a peripheral portion of the substrate to form a right-angled cross section. The polishing apparatus includes: a substrate holder that holds and rotates the substrate; guide rollers that support a polishing tape; and a polishing head having a pressing member that presses an edge of the polishing tape against the peripheral portion of the substrate from above. The guide rollers are arranged such that the polishing tape extends parallel to a tangential direction of the substrate and a polishing surface of the polishing tape is parallel to a surface of the substrate. The substrate holder includes: a holding stage that holds the substrate; and a supporting stage that supports a lower surface of the peripheral portion of the substrate in its entirety. The supporting stage rotates in unison with the holding stage. | 09-27-2012 |
20130207995 | IMAGE MODULATION APPARATUS, METHOD, AND PROGRAM - An image modulation apparatus includes a device information obtaining unit to obtain device property information of a plurality of display devices respectively disposed at a plurality of image distribution destination apparatuses; a simulated image generator to generate a simulated image to be displayed on each of the display devices disposed at each of the image distribution destination apparatuses based on a distribution target image, to be transmitted to each of the image distribution destination apparatuses, and the device property information of each of the display devices obtained by the device information obtaining unit; and an image modulation unit to modulate the distribution target image based on a modulation instruction prepared for the plurality of the simulated images simulated by the simulated image generator. | 08-15-2013 |
20140094095 | POLISHING METHOD - A polishing method includes rotating a substrate, performing a first polishing process of pressing a polishing tape against an edge portion of the substrate by a pressing member, with a portion of the polishing tape projecting from the pressing member inwardly in a radial direction of the substrate, to polish the edge portion of the substrate and bend the portion of the polishing tape along the pressing member, and performing a second polishing process of pressing the bent portion of the polishing tape inwardly in the radial direction of the substrate by the pressing member to further polish the edge portion of the substrate. | 04-03-2014 |
20140213155 | WAFER POLISHING APPARATUS AND METHOD - An apparatus and method of polishing a substrate is described. The polishing includes: rotating a substrate; pressing a first polishing tool against an edge portion of the substrate to polish the edge portion; and pressing a second polishing tool against the edge portion of the substrate to polish the edge portion. The second polishing tool is located more inwardly than the first polishing tool with respect to a radial direction of the substrate. The first polishing tool has a polishing surface rougher than a polishing surface of the second polishing tool. | 07-31-2014 |
20150151398 | POLISHING APPARATUS AND POLISHING METHOD - The polishing apparatus has a polishing unit capable of polishing a peripheral portion of the substrate to form a right-angled cross section. The polishing apparatus includes: a substrate holder that holds and rotates the substrate; guide rollers that support a polishing tape; and a polishing head having a pressing member that presses an edge of the polishing tape against the peripheral portion of the substrate from above. The guide rollers are arranged such that the polishing tape extends parallel to a tangential direction of the substrate and a polishing surface of the polishing tape is parallel to a surface of the substrate. The substrate holder includes: a holding stage that holds the substrate; and a supporting stage that supports a lower surface of the peripheral portion of the substrate in its entirety. The supporting stage rotates in unison with the holding stage. | 06-04-2015 |
Patent application number | Description | Published |
20140293675 | NONVOLATILE SEMICONDUCTOR DEVICE AND METHOD FOR DRIVING SAME - According to one embodiment, a nonvolatile memory device includes: a memory cell array including first wirings, second wirings, and a memory cell connected between the first wirings and the second wirings; and a control circuit unit configured to select a selected memory cell from the memory cells, perform a first operation of changing a resistance state of the selected memory cell between a first resistance state and a second resistance state, and determine whether the first operation has been properly performed or not and perform retry operation such as applying a retry pulse when the first operation has not been properly performed. The control circuit unit regards the selected memory cell as excessive retry operation and inhibits the selected memory cell in accordance with the number of times of the excessive retry operation when the number of times of the retry operation is over k times. | 10-02-2014 |
20140355326 | NON-VOLATILE MEMORY DEVICE - According to one embodiment, a non-volatile memory device includes: a plurality of first interconnects, and each of the first interconnects extending in a first direction; a plurality of second interconnects, and each of the second interconnects extending in a second direction intersecting with the first direction; a memory cell connected between each of the plurality of first interconnects and each of the plurality of second interconnects, the memory cell including a memory layer and a diode connected to the memory layer; and a control circuit capable of selecting a selection first interconnect among the first interconnects, selecting a selection second interconnect among the second interconnects, and selecting a selection memory cell connected to both the selection first interconnect and the selection second interconnect. | 12-04-2014 |
20150014622 | NON-VOLATILE MEMORY DEVICE - According to an embodiment, a non-volatile memory device includes a first wiring extending in a first direction, a second wiring extending in a second direction orthogonal to the first direction. The device includes third wirings, and a first and a second memory. The third wirings extend in a third direction crossing the first direction and orthogonal to the second direction, and aligned in the second direction on both sides of the second wiring. The first memory is provided between one of third wiring pair and the second wiring, the pair of third wirings facing each other across the second wiring. The second memory is provided between another one of the third wiring pair and the second wiring. The second wiring has a block portion between a first portion in contact with the first memory and a second portion in contact with the second memory. | 01-15-2015 |
Patent application number | Description | Published |
20140347911 | NONVOLATILE SEMICONDUCTOR MEMORY DEVICE - A nonvolatile semiconductor memory device according to an embodiment comprises a memory cell block that includes a memory cell array, the memory cell array including: a plurality of first lines; a plurality of second lines intersecting the plurality of first lines; and a memory cell that is provided at each of intersections of the plurality of first lines and the plurality of second lines and includes a variable resistance element, the memory cell array further including a protective resistance film that is provided respectively at each of the intersections of the plurality of first lines and the plurality of second lines and that is connected in series with the memory cell and ohmically contacts the memory cell, and the protective resistance film being configured from a material having a resistivity of 1˜100 Ω·cm. | 11-27-2014 |
20150098265 | NONVOLATILE SEMICONDUCTOR MEMORY DEVICE - A nonvolatile semiconductor memory device according to an embodiment includes a control circuit configured to cause data to be stored in a memory cell by setting the memory cell to be included in one of resistance value distributions. The control circuit is configured to set a first resistance value distribution and a second resistance value distribution, the second resistance value distribution having a resistance value larger than that of the first resistance value distribution, and to set a second width to be larger than a first width, the second width being a width between a second upper limit value of the second resistance value distribution and a second lower limit value of the second resistance value distribution, and the first width being a width between a first upper limit value of the first resistance value distribution and a first lower limit value of the first resistance value distribution. | 04-09-2015 |
20150103582 | SEMICONDUCTOR MEMORY DEVICE - This semiconductor memory device comprises a memory cell array that includes: a plurality of first lines; a plurality of second lines intersecting the plurality of first lines; a plurality of memory cells each disposed at an intersection of the plurality of first lines and the plurality of second lines and including a variable resistance element; and a select transistor respectively connected to an end of the plurality of first lines. The select transistor includes a gate electrode, a gate insulating film, and a conductive layer. Moreover, one end of that conductive layer is connected to the end of the first line, and a non-linear resistance layer configured from a non-linear material is connected between the first line and the conductive layer. | 04-16-2015 |
20150117089 | SEMICONDUCTOR MEMORY DEVICE AND MEMORY SYSTEM - A semiconductor memory device according to an embodiment includes a memory cell array and a control circuit. The memory cell array includes first lines and second lines intersecting each other, a third line commonly connecting to the first lines, memory cells disposed at intersections of the first lines and the second lines, respectively. The control circuit is configured to execute a state determining operation detecting a voltage of the third line, and adjust a voltage applied to the first lines and the second lines during a resetting operation or a setting operation based on a result of the state determining operation. The resetting operation raises a resistance value of the variable resistance element. The setting operation lowers the resistance value of the variable resistance element. | 04-30-2015 |
20150179704 | SEMICONDUCTOR MEMORY DEVICE - A semiconductor memory device according to an embodiment described below comprises: first lines arranged in a first direction perpendicular to a main surface of a substrate and extending in a second direction crossing the first direction; second lines arranged in the second direction, extending in the first direction, and intersecting the first lines; memory cells disposed at intersections of the first lines and the second lines; and an interlayer insulating film provided between the second lines. The interlayer insulating film has an air gap extending continuously in the first direction so as to intersect at least some of the first lines aligned along the first direction. The interlayer insulating film also includes an insulating film positioned above the air gap and having a curved surface that protrudes toward a direction of the substrate. | 06-25-2015 |
20150221368 | SEMICONDUCTOR MEMORY DEVICE - A semiconductor memory device according to an embodiment includes a memory cell array and a control circuit. The memory cell array includes: a plurality of first conductive layers that are stacked; a memory layer provided on a side surface of the plurality of the first conductive layers; and a second conductive layer that contacts the side surface of the plurality of the first conductive layers via the memory layer. A thickness of the first conductive layer disposed at the first position is larger than a thickness of the first conductive layer disposed at the second position. The control circuit is configured to apply a first voltage to a selected first conductive layer. The control circuit changes a value of the first voltage based on a position of the selected first conductive layer. | 08-06-2015 |
20150228337 | SEMICONDUCTOR MEMORY DEVICE AND CONTROL METHOD THEREOF - A semiconductor memory device comprises: first lines disposed in a first direction perpendicular to a substrate and extending in a second direction parallel to the substrate; second lines disposed in the second direction and configured to extend in the first direction, the second lines intersecting the first lines; and memory cells disposed at intersections of the first lines and the second lines and each including a variable resistance element. Furthermore, a third line extends in a third direction orthogonal to the first and second directions. A select transistor is connected between the second and third lines. A control circuit controls a voltage applied to the first and third lines, and the select transistor. The control circuit renders conductive at least one of the select transistors and thereby detect a current flowing in the third line, and determines a deterioration state of the select transistor according to a detection result. | 08-13-2015 |