With Light-absorbing Matrix On Faceplate Patents (Class 430/25)
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Patent number: 11849607Abstract: A display apparatus includes: a first substrate on which a plurality of light-emitting devices are arranged; a plurality of light controllers arranged above the first substrate and corresponding to the plurality of light-emitting devices; and a plurality of banks between the plurality of light controllers, wherein each bank of the plurality of banks includes a black pigment and a scattering agent. Because the display apparatus according to an embodiment includes a bank including a black pigment and a scattering agent, color mixing between pixels is prevented or reduced, and light efficiency is increased.Type: GrantFiled: February 2, 2021Date of Patent: December 19, 2023Assignee: Samsung Display Co., Ltd.Inventors: Beomsoo Shin, Sukhoon Kang, Jaejin Lyu, Hyungguen Yoon, Sunghwan Hong
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Patent number: 11554362Abstract: Provided are catalysts for reduction of nitrogen oxides including an active site including lanthanum vanadate represented by at least one of Formula 1 and Formula 2 and a support carrying the active site. LaVO4 (wherein LaVO4 is polymorphous and has a tetragonal or monoclinic crystal structure)??Formula 1 LaV3O9 (wherein LaV3O9 has a monoclinic crystal structure)??Formula 2.Type: GrantFiled: December 30, 2020Date of Patent: January 17, 2023Assignee: Korea Institute of Science and TechnologyInventors: Jongsik Kim, Heon Phil Ha, Dong-Wook Kwon
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Patent number: 11428650Abstract: Methods and systems for performing overlay and edge placement errors of device structures based on x-ray diffraction measurement data are presented. Overlay error between different layers of a metrology target is estimated based on the intensity variation within each x-ray diffraction order measured at multiple, different angles of incidence and azimuth angles. The estimation of overlay involves a parameterization of the intensity modulations of common orders such that a low frequency shape modulation is described by a set of basis functions and a high frequency overlay modulation is described by an affine-circular function including a parameter indicative of overlay. In addition to overlay, a shape parameter of the metrology target is estimated based on a fitting analysis of a measurement model to the intensities of the measured diffraction orders. In some examples, the estimation of overlay and the estimation of one or more shape parameter values are performed simultaneously.Type: GrantFiled: December 17, 2019Date of Patent: August 30, 2022Assignee: KLA CorporationInventors: John Hench, Andrei V. Shchegrov, Michael S. Bakeman
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Patent number: 9640590Abstract: An organic light-emitting diode (OLED) display and fabrication method thereof are provided. The OLED display includes an organic light-emitting layer comprising a plurality of primary color regions and a plurality of mixed color regions, wherein the primary color regions and the mixed color regions have the same light emitting direction. A color shift prevention layer is disposed above or under the organic light-emitting layer, the color shift prevention layer comprising a plurality of opaque patterns disposed on the light emitting direction of the corresponding mixed color regions. The color shift prevention layer incorporated in the OLED display is able to block the mixed light emitted from the mixed color regions of the organic light-emitting layer. Therefore, the color shift problem can be solved.Type: GrantFiled: September 9, 2014Date of Patent: May 2, 2017Assignee: TPK Touch Solutions Inc.Inventors: Chen-Yu Liu, Hung-Chieh Lu, Hsi-Chien Lin
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Patent number: 9185835Abstract: Techniques or processes for providing markings on products are disclosed. The markings provided on products can be textual and/or graphic. The techniques or processes can provide high resolution markings on surfaces that are flat or curved. In one embodiment, the products have housings and the markings are to be provided on the housings. For example, the housing for a particular product can include an outer housing surface and the markings can be provided on the outer housing surface.Type: GrantFiled: January 22, 2013Date of Patent: November 10, 2015Assignee: Apple Inc.Inventors: Richard Walter Heley, Erming Luo, Adam Mittleman, John Payne, Tang Yew Tan, Erik Wang
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Patent number: 9110205Abstract: A black curable composition for a wafer level lens is provided which exhibits excellent developability during formation of a pattern and imparts excellent adhesion with a lens to a formed light-shielding film. The black curable composition contains an inorganic pigment, a specific dispersion resin, a polymerization initiator, and a polymerizable compound. The inorganic pigment is preferably titanium black.Type: GrantFiled: December 3, 2010Date of Patent: August 18, 2015Assignee: FUJIFILM CorporationInventor: Yushi Kaneko
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Patent number: 8754852Abstract: Disclosed are a light guide plate for a non-contact type coordinate input system, a system including the same, and a non-contact type coordinate input method using the same. More particularly, the present invention relates to a light guide plate for a non-contact type coordinate input system, which eliminates inconvenience of a conventional contact-type coordinate input system inputting coordinates through direct contact, and which can reduce use of sensors and optical loss as much as possible. The present invention also relates to a system including the same, and a non-contact type coordinate input method using the same.Type: GrantFiled: August 10, 2007Date of Patent: June 17, 2014Assignee: LG Chem, Ltd.Inventors: Yeon-Keun Lee, Sang-Hyun Park, Hyun-Seok Choi, Jung-Doo Kim, Su-Rim Lee
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Patent number: 8481964Abstract: A charged particle beam drawing apparatus has a drawing chamber including a movable stage which supports a mask, the mask being formed by applying a resist to an upper surface of a mask substrate, an optical column for applying a charged particle beam to draw patterns in the resist, a charged particle beam dose correction portion for correcting a dose of the charged particle beam applied from the optical column to the resist on the basis of proximity effect and fogging effect, and a conversion coefficient changing portion for changing a conversion coefficient on the basis of pattern density in the resist and a position in the resist, wherein the conversion coefficient is a ratio of an accumulation energy of the charged particle beam accumulated in the resist, to an accumulation dose of the charged particle beam accumulated in the resist.Type: GrantFiled: July 29, 2010Date of Patent: July 9, 2013Assignee: NuFlare Technology, Inc.Inventor: Yasuo Kato
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Patent number: 7473912Abstract: According to a specific embodiment of the present invention, a mask-less lithography method and apparatus is provided. The apparatus includes an integrated write head on a slider with an air bearing that creates a lift force that allows that write head to fly over a spinning wafer substrate in nanometer distance without physical contact. The short distance between the write head and substrate prevents the light from diffracting. As a result, micro and nanometer structures can be patterned without being limited by light diffraction in conventional lithography methods.Type: GrantFiled: November 9, 2006Date of Patent: January 6, 2009Inventor: Xiao (Charles) Yang
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Patent number: 7008739Abstract: The present invention is to provide a process for manufacturing a fluorescent film wherein the order of coating the fluorescent films of a color Braun tube and the thickness of the film are adjusted to reduce the amount of red fluorescent material employed for red fluorescent film without deteriorating the quality of the red fluorescent film, thereby lowering the cost for manufacturing. The process first forms the red fluorescent film on the panel of a color Braun tube and then forms the blue and green fluorescent films subsequently thereafter.Type: GrantFiled: April 16, 1996Date of Patent: March 7, 2006Assignee: LG Electronics Inc.Inventors: Seoug Wan Kang, Kyung Ho Lee
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Patent number: 6929821Abstract: A resin composition (A) layer, comprising an acrylic polymer (a) having a weight average molecular weight of 10000 to 300000 and an acid number of 80 to 250 mgKOH/g and a fluorescent substance (b), and a photosensitive resin composition (B) layer are formed inside the cell, and then they are exposed, developed and baked. By the process of the present invention the fluorescent substance can be effectively and uniformly formed on the side and bottom wall of the cell.Type: GrantFiled: March 18, 1999Date of Patent: August 16, 2005Assignee: The Nippon Synthetic Chemical Industry Co., Ltd.Inventor: Hiroaki Satoh
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Patent number: 6803711Abstract: A mask for a color cathode ray tube (CRT) and a manufacturing method thereof are provided. This mask includes a plurality of strips isolated from each other at predetermined intervals in parallel, and a plurality of bridges for forming slots through which electron beams pass by connecting adjacent strips to each other. In this mask, each of the bridges between adjacent strips has a first curved portion formed on the side from which electron beams come out, and a second curved portion formed on the side upon which electron beams are incident. The first curved portion has a first width in the direction perpendicular to the length direction of the strips, and extends in the length direction of the strips. The second curved portion has a second width that is smaller than the first width in the length direction of the adjacent strips.Type: GrantFiled: August 23, 2001Date of Patent: October 12, 2004Assignee: Samsung SDI Co., Ltd.Inventors: Young-bin Im, Deok-hyeon Choe
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Patent number: 6727034Abstract: The present invention is related to a photosensitive composition which comprises 70 to 99 weight % of a vinyl polymer (A) comprising recurring units derived from a monomer (a) of the following general formula (1) and 1 to 30 weight % of at least one photosensitive compound (B) selected from the group consisting of azide compounds and diazo compounds.Type: GrantFiled: May 14, 1999Date of Patent: April 27, 2004Assignee: Sanyo Chemical Industries, Ltd.Inventors: Naohito Ogiso, Tetsuya Watanabe, Tetsuya Yamada
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Patent number: 6727048Abstract: A method for photo-imageable lacquer deposition for a display device. In one embodiment, a layer of photo-imageable lacquer is deposited on top of a faceplate of a display device. Portions of the lacquer layer are removed and selected portions of the lacquer layer remain deposited in the sub-pixel areas of the faceplate.Type: GrantFiled: December 20, 2001Date of Patent: April 27, 2004Assignees: Candescent Intellectual Property Services, Inc., Candescent Technologies CorporationInventors: Olof M. Trollsas, Theodore S. Fahlen
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Publication number: 20040067425Abstract: A method of manufacturing a luminescent screen assembly, having a light-absorbing matrix with a plurality of substantially equally-sized openings therein, on an inner surface of a faceplate panel of a cathode-ray tube (CRT) is provided. The method include the steps of exposing a first photoresist layer to light from a light source, located relative to a central source position, as well as two symmetrical source positions located relative to the central source position. Thereafter, a second photoresist layer and a third photoresist layer are sequentially exposed to define second guardbands of light-absorbing material and third guardbands of light-absorbing material, respectively. However, the light source positions for the second photoresist layer and the third photoresist layer are located at asymmetric positions relative to the central source position.Type: ApplicationFiled: August 1, 2003Publication date: April 8, 2004Inventors: Samuel Pearlman, Robert Earl Kreider, Richard LaPerita
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Publication number: 20040048197Abstract: A spin coatable, photosensitive black matrix coating having high surface resistivity and exhibiting an optical density greater than 3 at film thicknesses of ≦1 micron has been developed for flat panel display applications where a chrome/chrome oxide black matrix is usually employed. It possesses excellent thermal, light, and chemical stability and good shelf life. It is deposited and patterned by a simple photolithographic processes excellent thermal, light, and chemical stability and good shelf life. It is deposited and patterned by a simple photolithographic process, thereby reducing the cost of processing in relation to chrome/chrome oxide black matrix fabrication processes.Type: ApplicationFiled: September 8, 2003Publication date: March 11, 2004Inventors: Ram W. Sabnis, Jonathan W. Mayo, Terry L. Brewer, Michael D. Stroder, Kiyomi Ema, Yasuhisa Sone, Takayasu Nihira, Kazuhiro Aoba, Akira Yanagimoto
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Patent number: 6673473Abstract: The invention relates to a display screen, in particular a color display screen, based on a display screen support with a single-layer or multi-layer coating which contains a red luminous substance and a coloring pigment. The invention is furthermore directed towards the display screen coating, means for the production thereof and a coated red luminous substance capable of being used for this purpose. A feature of the invention, is the presence of red tantalum (V) nitride by way of pigment for the purpose of increasing the contrast and decreasing the reflection of the display screen.Type: GrantFiled: November 21, 2001Date of Patent: January 6, 2004Assignee: Ferro GmbHInventor: Hans-Peter Letschert
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Publication number: 20030193624Abstract: The invention provides a radiation-sensitive resin composition, by which a patterned insulation film whose water repellency varies is easily formed with high precision, a process for forming a patterned insulation film using this composition, a display element and an flat-panel disply device using the composition, and a process for producing the flat-panel disply device.Type: ApplicationFiled: April 10, 2003Publication date: October 16, 2003Applicants: SHARP KABUSHIKI KAISHA, JSR CORPORATIONInventors: Kazuki Kobayashi, Ikuo Sakono, Shinji Shiraki, Hirofumi Sasaki, Kazuaki Niwa
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Publication number: 20030113640Abstract: A spin coatable, photosensitive black matrix coating having high surface resistivity and exhibiting an optical density greater than 3 at film thicknesses of ≦1 micron has been developed for flat panel display applications where a chrome/chrome oxide black matrix is usually employed. It possesses excellent thermal, light, and chemical stability and good shelf life. It is deposited and patterned by a simple photolithographic processes excellent thermal, light, and chemical stability and good shelf life. It is deposited and patterned by a simple photolithographic process, thereby reducing the cost of processing in relation to chrome/chrome oxide black matrix fabrication processes.Type: ApplicationFiled: October 21, 2002Publication date: June 19, 2003Inventors: Ram W. Sabnis, Jonathan W. Mayo, Terry L. Brewer, Michael D. Stroder, Kiyomi Ema, Yasuhisa Sone, Takayasu Nihira, Kazuhiro Aoba, Akira Yanagimoto
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Patent number: 6579624Abstract: A functional film includes a transition layer having a first constituent having SiO as a dielectric material and at least one second constituent selected from aluminum (Al), silver (Ag), silicon (Si), germanium (Ge), yttrium (Y), zinc (Zn), zirconium (Zr), tungsten (W) and tantalum (Ta). The first and second constituents have corresponding gradual content gradients according to a thickness of the functional film.Type: GrantFiled: November 28, 2001Date of Patent: June 17, 2003Assignee: Samsung SDI Co., Ltd.Inventors: Chaun-gi Choi, Young-rag Do, Joon-bae Lee, Chang-won Park
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Patent number: 6576383Abstract: A method of manufacturing a luminescent screen assembly for a color cathode-ray tube (CRT) is disclosed. The luminescent screen assembly is formed on an inner surface of a faceplate panel of the CRT. The luminescent screen assembly includes an organic conductive (OC) layer overcoated with an organic photoconductive (OPC) layer. Three different color-emitting phosphors are sequentially deposited over portions of the OPC layer by uniformly charging and than selectively discharging desired areas thereof. Appropriate color-emitting phosphors are then deposited on the discharged areas. The first color-emitting phosphor lines are deposited on the OPC layer by charging and then selectively discharging the OPC layer using a symmetric exposure profile. Thereafter, the OPC layer is charged again and selectively discharged to deposit the second color-emitting phosphor lines using an asymmetric exposure profile.Type: GrantFiled: November 9, 2001Date of Patent: June 10, 2003Assignee: Thomson Licensing S.A.Inventor: Liyou Yang
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Publication number: 20030059692Abstract: A method of manufacturing a luminescent screen assembly, having a light-absorbing matrix with a plurality of substantially equally-sized openings therein, on an inner surface of a faceplate panel of a cathode-ray tube (CRT) is provided. The tube has a color selection electrode spaced from the inner surface of the faceplate panel in which the color selection electrode has a plurality of strands interleaved with slots. The method includes the steps of providing a first photoresist layer, whose solubility is altered when exposed to light, such that greater dosages of light reduce the solubility thereof. The first photoresist layer is applied to the inner surface of the faceplate panel. The first photoresist layer is exposed to light from a light source, located relative to a central source position, as well as two symmetrical source positions relative to the central source position.Type: ApplicationFiled: September 25, 2001Publication date: March 27, 2003Inventors: Samuel Pearlman, Robert Earl Kreider, Richard LaPeruta
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Patent number: 6531252Abstract: A method of manufacturing a luminescent screen assembly for a color cathode-ray tube (CRT) is disclosed. The luminescent screen assembly is formed on an interior surface of a faceplate panel of the CRT. The luminescent screen assembly includes a light-absorbing matrix having a plurality of substantially equally sized openings formed therein. The matrix is formed by applying one or more light sensitive layers on the interior surface of the faceplate panel of the CRT tube. The one or more light sensitive layers includes a photoresist material. Also, the one or more light sensitive layers includes a contrast enhancing material. The one or more light sensitive layers are selectively exposed to actinic radiation projected through openings in a shadow mask, positioned a fixed distance from the screen assembly.Type: GrantFiled: July 19, 2002Date of Patent: March 11, 2003Assignee: Thomson Licensing S.A.Inventors: Kangning Liang, Victoria Ann Rebar
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Patent number: 6524154Abstract: A high resolution field emission display includes a faceplate and a baseplate. The faceplate includes a transparent viewing layer, a transparent conductive layer formed on the transparent viewing layer and intersecting stripes of light-absorbing, opaque insulating material formed on the transparent conductive layer. The insulating material defines openings less than one hundred microns wide between the intersecting stripes. The faceplate also includes a plurality of localized regions of cathodoluminescent material, each formed in one of the openings. The cathodoluminescent material includes a metal oxide providing reduced resistivity in the cathodoluminescent material. Significantly, the reduced resistivity of the cathodoluminescent material together with the focusing effect of the insulating material provide increased acuity in luminous images formed on the faceplate.Type: GrantFiled: May 16, 2002Date of Patent: February 25, 2003Assignee: Micron Technology, Inc.Inventors: Zhongyi Xia, Jimmy J. Browning, Charles M. Watkins, David A. Cathey
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Publication number: 20020182522Abstract: A spin coatable, photosensitive black matrix coating having high surface resistivity and exhibiting an optical density greater than 3 at film thicknesses of ≦1 micron has been developed for flat panel display applications where a chrome/chrome oxide black matrix is usually employed. It possesses excellent thermal, light, and chemical stability and good shelf life. It is deposited and patterned by a simple photolithographic processes excellent thermal, light, and chemical stability and good shelf life. It is deposited and patterned by a simple photolithographic process, thereby reducing the cost of processing in relation to chrome/chrome oxide black matrix fabrication processes.Type: ApplicationFiled: September 5, 2001Publication date: December 5, 2002Inventors: Ram W. Sabnis, Jonathan W. Mayo, Terry L. Brewer, Michael D. Stroder, Kiyomi Ema, Yasuhisa Sone, Takayasu Nihira, Kazuhiro Aoba, Akira Yanagimoto
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Publication number: 20020155364Abstract: Disclosed is a method and system to achieve thermal transfer between a workpiece and a heated body that are disposed within a chamber. The method includes placing the workpiece at a first position within the chamber, spaced-apart from the heated body a first distance; establishing the pressure within the chamber to be at a predetermined level; placing the workpiece at a second distance from the heated body to effectuate thermal transfer between the body and the workpiece, with the second distance being less than the first distance.Type: ApplicationFiled: April 20, 2001Publication date: October 24, 2002Inventors: David Trost, Francis C. Chilese
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Patent number: 6432593Abstract: A multi-level matrix structure for frictionally retaining a support structure within a flat panel display device. In one embodiment, the present invention is comprised of a multi-level matrix structure. The multi-level matrix structure of the present embodiment is comprised of a first multi-layered structure disposed on an inner surface of a faceplate of a flat panel display device. The multi-level matrix structure of the present embodiment is further comprised of a plurality of substantially parallel spaced apart ridges. In this embodiment, the plurality of substantially parallel spaced apart ridges overlie the first multi-layered structure. Additionally, in this embodiment, the plurality of substantially parallel spaced apart ridges include contact portions for frictionally retaining a support structure in a first direction at a desired location within the flat panel display device.Type: GrantFiled: July 28, 2000Date of Patent: August 13, 2002Assignee: Candescent Technologies CorporationInventors: John D. Porter, Bob L. Mackey, Robert G. Neimeyer, Christopher J. Spindt, David C. Chang, Kris E. Sahlstrom
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Patent number: 6421187Abstract: A photosensitive layer of or for a cathode ray tube is illuminated by means of a laser illumination arrangement. The laser illumination arrangement comprises a homogenizer which serves to reduce the coherence of the laser beam.Type: GrantFiled: September 13, 2001Date of Patent: July 16, 2002Assignee: Koninklijke Philips Electronics N. V.Inventors: Tewe Hiepke Heemstra, Geert Jan Van Der Meer
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Publication number: 20020090560Abstract: The invention relates to a display screen, in particular a colour display screen, based on a display-screen support with a single-layer or multi-layer coating which contains a red luminous substance and a colouring pigment. The invention is furthermore directed towards the display-screen coating, means for the production thereof and a coated red luminous substance capable of being used for this purpose.Type: ApplicationFiled: November 21, 2001Publication date: July 11, 2002Applicant: Ferro GmbHInventor: Hans-Peter Letschert
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Patent number: 6391504Abstract: A phosphor pattern for a field emission display panel (FED) is provided. The phosphor pattern is formed by a process whichh comprises the steps of: (I) forming (A) a photosensitive resin composition layer containing a phosphor on a substrate to which a conductive layer is formed; (II) selectively irradiating active light to (A) the photosensitive resin composition layer containing a phosphor, for forming a pattern; (III) selectively removing (A) the photosensitive resin composition layer to which active light has been selectively irradiated by development, to form the pattern; and (IV) calcining the pattern to remove an unnecessary portion, to form the phosphor pattern. Also provided ar this process for forming the phosphor pattern, a photosensitive element for a FED and a field emission display panel.Type: GrantFiled: May 22, 1998Date of Patent: May 21, 2002Assignee: Hitachi Chemical Co., Ltd.Inventors: Seiji Tai, Yoshiyuki Horibe, Hiroyuki Tanaka, Takeshi Nojiri, Kazuya Satou, Naoki Kimura, Mariko Shimamura
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Patent number: 6387576Abstract: A black matrix, a preparation method thereof and a display device employing the black matrix. The black matrix which is a black coating layer surrounding pixels of the display device, includes SiO which is a dielectric material and at least one metal selected from the group consisting of iron (Fe), cobalt (Co), vanadium (V) and titanium (Ti). The black matrix has excellent thermal and chemical stability and is environmentally desirous by using a mixture of a nontoxic metal and a dielectric material. Also, the black matrix exhibits excellent adhesion to a substrate without an annealing process, is excellent in mechanical characteristic due to the absence of internal stress and is capable of being micro-patterned to have a particle size of 1 &mgr;m or less. When applied to the substrate of the display device, the black matrix exhibits excellent external light absorbing effect. Therefore, a display device having improved luminance and contrast characteristics can be attained.Type: GrantFiled: December 21, 2000Date of Patent: May 14, 2002Assignees: Samsung SDI Co., Ltd., Ivan Z. Indutnyy, Petro E. Shepelizvyi, Kateryna V. MichailoyskayaInventors: Ivan Indutnyy Z., Petro Shepeliavyi E., Kateryna Michailovskaya V., Chang-won Park, Joon-bae Lee, Yong Han
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Patent number: 6383696Abstract: Methods of forming face plate assemblies are described. In one implementation, a substrate is patterned with photoresist and a first phosphor-comprising material is formed over first surface areas of the substrate. The photoresist is stripped leaving some of the first phosphor-comprising material over substrate areas other than the first areas. Photoresist is again formed over the substrate and processed to expose second substrate areas which are different from the first substrate areas. In a preferred aspect, processing the photoresist comprises using a heated aqueous developing solution comprising an acid, e.g. lactic acid, effective to dislodge and remove first phosphor-comprising material from beneath the developed photoresist. A second phosphor-comprising material is formed over the substrate and the exposed second areas, with trace deposits being left over other substrate areas.Type: GrantFiled: February 12, 2001Date of Patent: May 7, 2002Assignee: Micron Technology, Inc.Inventor: Jefferson O. Nemelka
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Publication number: 20020039693Abstract: In the production or a shadow mask, the through-holes for passing an electron beam are formed by etching of the Fe—Ni alloy. The variation in diameter of apertures is prevented by dispersing 2000 or more of precipitates and inclusions from 0.01 &mgr;m to 5 &mgr;m in diameter on the surface of said material per mm2. The Fe—Ni alloy of from 34 to 38% of Ni, not more than 0.5% of Mn, and if necessary, from 5 to 40 ppm of B, and from 5 to 40 ppm of N, the balance being Fe and unavoidable and incidental impurities with the proviso of 0.10% or less of C, 0.30% or less of Si, 0.30% or less of Al, 0.005% or less of S, and 0.005% or less of P.Type: ApplicationFiled: July 17, 2001Publication date: April 4, 2002Inventor: Ikuya Kurosaki
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Publication number: 20020018946Abstract: Disclosed are a phosphor pattern which comprises a substrate having unevenness and a phosphor layer formed on the inner surface of a concave portion of the substrate, wherein the phosphor pattern thickness ratio (x)/(y) satisfies a range of 0.1 to 1.5, where when the length from the bottom of the concave portion to the top of a convex portion is L (&mgr;m), (x) is a thickness of the phosphor pattern formed on an uneven wall surface at a position of 0.9×L from the bottom of the concave portion toward the top of the convex portion, and (y) is a thickness of the phosphor pattern formed on the uneven wall surface at a position of 0.4×L from the bottom of the concave portion toward the top of the convex portion, and processes for preparing the same.Type: ApplicationFiled: August 13, 2001Publication date: February 14, 2002Inventors: Takeshi Nojiri, Hideyasu Tsuiki, Hiroyuki Tanaka, Yumiko Wada, Seiji Tai, Seikichi Tanno, Hajime Kakumaru, Kazuya Sato, Naoki Kimura, Ikuo Mukai
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Patent number: 6329111Abstract: Disclosed are a phosphor pattern which comprises a substrate having unevenness and a phosphor layer formed on the inner surface of a concave portion of the substrate, wherein the phosphor pattern thickness ratio (x)/(y) satisfies a range of 0.1 to 1.5, where when the length from the bottom of the concave portion to the top of a convex portion is L (&mgr;m), (x) is a thickness of the phosphor pattern formed on an uneven wall surface at a position of 0.9×L from the bottom of the concave portion toward the top of the convex portion, and (y) is a thickness of the phosphor pattern formed on the uneven wall surface at a position of 0.4×L from the bottom of the concave portion toward the top of the convex portion, and processes for preparing the same.Type: GrantFiled: January 22, 1997Date of Patent: December 11, 2001Assignee: Hitachi Chemical CompanyInventors: Takeshi Nojiri, Hideyasu Tsuiki, Hiroyuki Tanaka, Yumiko Wada, Seiji Tai, Seikichi Tanno, Hajime Kakumaru, Kazuya Sato, Naoki Kimura, Ikuo Mukai
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Publication number: 20010002302Abstract: Disclosed are a phosphor pattern which comprises a calcination product of a phosphor pattern precursor containingType: ApplicationFiled: January 8, 2001Publication date: May 31, 2001Inventors: Naoki Kimura, Seiji Tai, Hiroyuki Tanaka, Takeshi Nojiri, Kazuya Satou, Yoshiyuki Horibe, Mariko Shimamura, Toranosuke Ashizawa, Eiji Fujita, Seikichi Tanno
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Publication number: 20010001696Abstract: Disclosed are a process for preparing a phosphor pattern for a field emission display panel which comprises the steps of: (I) forming (A) a photosensitive resin composition layer containing a phosphor on a substrate to which a conductive layer is formed; (II) irradiating active light to (A) the photosensitive resin composition layer containing a phosphor imagewisely; (III) selectively removing (A) the photosensitive resin composition layer to which active light has been imagewisely irradiated by development to form a pattern; and (IV) calcining the pattern to remove unnecessary portion to form a phosphor pattern, a photosensitive element for a FED display panel, phosphor pattern for a FED display panel, and a FED display panel.Type: ApplicationFiled: May 22, 1998Publication date: May 24, 2001Inventors: SEIJI TAI, YOSHIYUKI HORIBE, HIROYUKI TANAKA, TAKESHI NOJIRI, KAZUYA SATOU, NAOKI KIMURA, MARIKO SHIMAMURA
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Patent number: 6165657Abstract: A method of electrophotographically manufacturing a viewing screen including a filter layer of pigment particles for a cathode-ray tube (CRT), which comprises the steps of first-coating of volatilizable conductive layer, second-coating the conductive layer with a volatilizable photoconductive layer, first-establishing a uniform electrostatic charge over the whole surface of the photoconductive layer, first-exposing selected areas of the photoconductive layer to a light source, first-developing the discharged, exposed areas with one kind of charged pigment particles, and fixing the developed pigment particles to the photoconductive layer to form a filter layer beneath one of first to third color-emitting phosphor particles. Then, the one of first to third color-emitting phosphor particles is formed on the filter layer by a electrophotographically manufacturing method.Type: GrantFiled: August 27, 1998Date of Patent: December 26, 2000Assignee: Orion Electric Co., Ltd.Inventors: Sang Youl Yoon, Dong Ky Shin, Hyo Sup Lee
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Patent number: 6159645Abstract: The invention relates to a black matrix in color picture tubes, a positive photoresist composition, an agent for protecting a black matrix, and a process for producing said black matrix. The invention is based on the object of providing a black matrix produced using a positive photoresist composition which permits good capability of structuring between exposed and non-exposed areas, and reducing the process for producing the black matrix to a few technological steps.Type: GrantFiled: February 9, 1998Date of Patent: December 12, 2000Assignee: Samsung Display Devices Co., Ltd.Inventors: Andre Wilpert, Gabi Grutzner, Kerstin Schulze-Matthai, Jurgen Bendig, Klaus Tummel
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Patent number: 6126988Abstract: A method for forming a planar aluminum layer in a flat panel display structure. In one embodiment, the present invention creates a flat panel display structure having a raised black matrix defining wells within the matrix. The present embodiment then deposits a non-conformal layer of acrylic-containing aluminizing lacquer over a layer of phosphors residing within the wells of the black matrix. In so doing, the lacquer layer forms a substantially planar surface on top of the phosphors. The present invention then deposits a layer of catalyst material over the layer of lacquer so that the aluminizing lacquer can be burned off completely and cleanly at a relatively low temperature. The catalytic layer conforms to the planar surface of the lacquer layer. The present invention then deposits an aluminum layer over the catalytic layer. The aluminum layer, in turn, conforms to the planar surface of the catalytic layer. Finally, the present invention bakes off the non-conformal lacquer layer.Type: GrantFiled: February 28, 1997Date of Patent: October 3, 2000Assignee: Candescent Technologies CorporationInventor: Paul M. Drumm
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Patent number: 6114404Abstract: The present invention relates to a radiation curable ink formulation which has a tan .delta. of from about 0.5 to about 1.5. The radiation curable ink formulation includes a pigment, a radiation cross-linkable monomer or oligomer, and a rheology modifier. Flat panel color filters which contain a black radiation curable ink formulation and one or more colored radiation curable ink formulations are also disclosed. At least one of the black and colored radiation curable ink formulations has a tan .delta. of from about 0.5 to about 1.5 and includes a pigment, a radiation cross-linkable monomer or oligomer, and a rheology modifier. Methods for manufacturing these flat panel color filters are also disclosed. The radiation curable ink formulations of the present invention have the advantage of permitting clean doctoring.Type: GrantFiled: March 22, 1999Date of Patent: September 5, 2000Assignee: Corning IncorporatedInventors: John S. Deeken, Ronald E. Johnson, Lung-Ming Wu, Khalil M. Moussa
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Patent number: 6103432Abstract: A method for forming a black matrix includes forming a black matrix applying a photoresist forming composition containing a compound represented by the formula (1) on the inner surface of a panel and drying the same to form a photoresist layer; exposing the photoresist layer; applying a black pigment solution for forming a black matrix on the photoresist layer and drying the same to form a black pigment layer; and developing the resultant structure; ##STR1## wherein, X is a halogen atom and l:m:n is 1.0-4.5:70.0-98.0:1.0-20.0. The method for forming a black matrix is a non-etching method, which is a simplified process and is not detrimental to environment. Also, since the black matrix material can be recovered from a developing solution for recycling, it is economical. Also, since the photoresist forming composition of the present invention has a good photosensitivity, a black matrix having an excellent landing margin can be obtained.Type: GrantFiled: April 12, 1999Date of Patent: August 15, 2000Assignee: Samsung Display Devices Co., Ltd.Inventors: Hyun-jin Kim, Hong-kyu Choi, Ki-jun Kim
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Patent number: 6071657Abstract: In a method for manufacturing a phosphor screen of a cathode ray tube, a first photo-resist layer is coated on an inner surface of a panel of the cathode ray tube except at predetermined locations. A second photo-resist layer dispersed with pigment particles is coated on the first photo-resist layer and at the predetermined locations. The second photo-resist layer is exposed at the predetermined locations from an opposite side of the panel. The first photo-resist layer is dissolved and the second photo-resist layer is removed from the first photo-resist layer so as to form a color filter layer at the predetermined locations. A phosphor layer is formed on the color filter layer.Type: GrantFiled: January 28, 1999Date of Patent: June 6, 2000Assignee: Sony CorporationInventors: Tsuneo Kusunoki, Norihiro Tateyama, Katsutoshi Ohno
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Patent number: 6037086Abstract: A light-absorbing matrix 23, having openings therein, is formed on an interior surface of a faceplate panel 12 of a cathode-ray tube 10 by providing a photoreceptor thereon, electrostatically charging the photoreceptor 72 to a substantially uniform level of charge, and exposing the photoreceptor to light through openings 33 in a color selection electrode 24 to selectively discharge the more intensely illuminated areas of the photoreceptor, without substantially discharging the less intensely illuminated areas. The photoreceptor 72 comprises a plurality of layers including a photoresist layer 56, a conductive layer 62, and a photoconductive layer 66. The openings 33 in the color selection electrode 24 have a dimension substantially greater than the dimension of the openings in the resultant matrix 23.The photoreceptor 72 is contacted with a liquid toner having charged pigment particles which form toner lines 84 on the less intensely illuminated areas of the photoreceptor.Type: GrantFiled: June 16, 1998Date of Patent: March 14, 2000Assignee: Thomson Consumer Electronics, Inc.,Inventors: Istvan Gorog, Richard LaPeruta, Jr., Samuel Pearlman, Nitin Vithalbher Desai, Wilber Clarence Stewart, Gregory James Cohee, Richard William Nosker, Pabitra Datta, deceased, Danielle Helene Herford
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Patent number: 6022652Abstract: A method for creating a faceplate of a display provides a faceplate substrate with a faceplate interior side and a faceplate exterior side. A plurality of barriers are formed on the faceplate interior side, with the barriers defining a plurality of subpixel volumes. Phosphor containing photopolymerizable material mixtures of red, green and blue, are deposited into subpixel volumes, and create a faceplate interior side/phosphor interface. At least a portion of the phosphor containing photopolymerizable material mixture is exposed with sufficient actinic light through the faceplate interior side/phosphor interface to polymerize a selected depth of the phosphor containing photopolymerizable material mixture in the subpixel volumes, and form a polymerized phosphor containing material in a plurality of subpixel volumes. Non-polymerized phosphor containing photopolymerizable material is removed from the polymerized phosphor containing material.Type: GrantFiled: February 23, 1996Date of Patent: February 8, 2000Assignee: Candescent Technologies CorporationInventors: Duane A. Haven, Paul M. Drumm, Robert M. Duboc, Jr.
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Patent number: 6022651Abstract: The present invention provides with a black matrix, a phosphor screen, and a method of manufacturing thereof. For a method of manufacturing the black matrix formed on the inner surface of a panel of a color CRT, a photoresist is not used, but a wet electrophotographic method was employed, using graphite for a main component of the black matrix materials, and forming a phosphor screen by a dry electrophotographic method to improve the quality of a color cathode-ray-tube.Type: GrantFiled: January 29, 1996Date of Patent: February 8, 2000Assignee: Samsung Display Devices Co., Ltd.Inventor: Jong Ho Cho
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Patent number: 6013400Abstract: The invention relates to a method of manufacturing a luminescent screen structure 22 with a light-absorbing matrix 23, having a plurality of substantially equally sized openings therein, on an inner surface of a CRT faceplate panel 12. A color selection electrode 24 is spaced a distance, Q, from the inner surface. The method includes providing a first photoresist layer 50, whose solubility is altered when it is exposed to light, on the inner surface of the faceplate panel 12. The first photoresist layer 50 is exposed to light from two symmetrically located source positions +G and -G, relative to a central source position, 0. Then the more soluble regions 54 of the photoresist layer 50 are removed, overcoated with a light-absorbing material 58 and developed to remove the retained, less soluble regions 52 of the first photoresist layer with the light-absorbing material thereon. First guardbands 60 of light-absorbing material remain on the interior surface of the faceplate panel 12.Type: GrantFiled: February 9, 1998Date of Patent: January 11, 2000Assignee: Thomson Consumer Electronics, Inc.Inventors: Richard LaPeruta, Istvan Gorog
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Patent number: 6008577Abstract: A flat panel display includes a magnetic material for focusing electrons onto a faceplate or phosphors of each pixel on a screen. In one embodiment, a display screen includes a faceplate having a magnetic material (30) deposited thereon. In an alternate embodiment, a field emission display including a substrate (11) with a cathode conductor (12); electron emitting tips (13) disposed over the cathode conductor (12); an insulator (14) disposed around the electron emitting tips (13); a conductive gate (15) over the insulator (14); and a magnetic material layer (19) for focusing electrons emitted from the emitting tips (13).Type: GrantFiled: December 1, 1997Date of Patent: December 28, 1999Assignee: Micron Technology, Inc.Inventors: Robert T. Rasmussen, Charles M. Watkins, Surjit S. Chadha
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Patent number: 5998085Abstract: A process is described for forming an emissive or phosphor screen. The process comprises the steps of:a) providing a thermal mass donor element comprising a substrate with a front side and a back side, with a coating of emissive material or phosphor adhered to said front side of said substrate,b) placing said coating of emissive material or phosphor adjacent to a support layer,c) addressing said mass donor element with coherent radiation to heat at least a portion of said coating of emissive material or phosphor to locally transfer at least some of said emissive material or phosphor to said support layer,d) repeating step c) a sufficient number of times to provide a coating of transferred emissive material or phosphor on said support layer in an area of at least 1 square centimeter.Type: GrantFiled: June 25, 1997Date of Patent: December 7, 1999Assignee: 3M Innovative PropertiesInventors: Thomas A. Isberg, Claire A. Jalbert, John S. Staral, William A. Tolbert, Martin B. Wolk
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Patent number: 5989649Abstract: The pigment dispersion composition having a good dispersibility, a good transparence and an anti-coating properties, which contains 0.5 to 50 parts by weight of an inorganic pigment, at least one type of dispersant selected from the group consisting of a sodium salt, an ammonium salt and an amine salt of an acrylic resin, an acryl copolymer resin, a polycarbonic acid, a condensation product of aromatic formalin sulfonate, and water or a solvent miscible with water.Type: GrantFiled: January 22, 1999Date of Patent: November 23, 1999Assignees: Kabushiki Kaisha Toshiba, Fuji Pigment Co., Ltd.Inventors: Takeo Itou, Hidemi Matsuda, Hisashi Chigusa, Kazuo Sakai, Masaru Fukuda