With Light-absorbing Matrix On Faceplate Patents (Class 430/25)
  • Patent number: 9640590
    Abstract: 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: Grant
    Filed: September 9, 2014
    Date of Patent: May 2, 2017
    Assignee: TPK Touch Solutions Inc.
    Inventors: Chen-Yu Liu, Hung-Chieh Lu, Hsi-Chien Lin
  • Patent number: 9185835
    Abstract: 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: Grant
    Filed: January 22, 2013
    Date of Patent: November 10, 2015
    Assignee: Apple Inc.
    Inventors: Richard Walter Heley, Erming Luo, Adam Mittleman, John Payne, Tang Yew Tan, Erik Wang
  • Patent number: 9110205
    Abstract: 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: Grant
    Filed: December 3, 2010
    Date of Patent: August 18, 2015
    Assignee: FUJIFILM Corporation
    Inventor: Yushi Kaneko
  • Patent number: 8754852
    Abstract: 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: Grant
    Filed: August 10, 2007
    Date of Patent: June 17, 2014
    Assignee: LG Chem, Ltd.
    Inventors: Yeon-Keun Lee, Sang-Hyun Park, Hyun-Seok Choi, Jung-Doo Kim, Su-Rim Lee
  • Patent number: 8481964
    Abstract: 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: Grant
    Filed: July 29, 2010
    Date of Patent: July 9, 2013
    Assignee: NuFlare Technology, Inc.
    Inventor: Yasuo Kato
  • Patent number: 7473912
    Abstract: 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: Grant
    Filed: November 9, 2006
    Date of Patent: January 6, 2009
    Inventor: Xiao (Charles) Yang
  • Patent number: 7008739
    Abstract: 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: Grant
    Filed: April 16, 1996
    Date of Patent: March 7, 2006
    Assignee: LG Electronics Inc.
    Inventors: Seoug Wan Kang, Kyung Ho Lee
  • Patent number: 6929821
    Abstract: 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: Grant
    Filed: March 18, 1999
    Date of Patent: August 16, 2005
    Assignee: The Nippon Synthetic Chemical Industry Co., Ltd.
    Inventor: Hiroaki Satoh
  • Patent number: 6803711
    Abstract: 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: Grant
    Filed: August 23, 2001
    Date of Patent: October 12, 2004
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Young-bin Im, Deok-hyeon Choe
  • Patent number: 6727034
    Abstract: 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: Grant
    Filed: May 14, 1999
    Date of Patent: April 27, 2004
    Assignee: Sanyo Chemical Industries, Ltd.
    Inventors: Naohito Ogiso, Tetsuya Watanabe, Tetsuya Yamada
  • Patent number: 6727048
    Abstract: 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: Grant
    Filed: December 20, 2001
    Date of Patent: April 27, 2004
    Assignees: Candescent Intellectual Property Services, Inc., Candescent Technologies Corporation
    Inventors: Olof M. Trollsas, Theodore S. Fahlen
  • Publication number: 20040067425
    Abstract: 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: Application
    Filed: August 1, 2003
    Publication date: April 8, 2004
    Inventors: Samuel Pearlman, Robert Earl Kreider, Richard LaPerita
  • Publication number: 20040048197
    Abstract: 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: Application
    Filed: September 8, 2003
    Publication date: March 11, 2004
    Inventors: Ram W. Sabnis, Jonathan W. Mayo, Terry L. Brewer, Michael D. Stroder, Kiyomi Ema, Yasuhisa Sone, Takayasu Nihira, Kazuhiro Aoba, Akira Yanagimoto
  • Patent number: 6673473
    Abstract: 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: Grant
    Filed: November 21, 2001
    Date of Patent: January 6, 2004
    Assignee: Ferro GmbH
    Inventor: Hans-Peter Letschert
  • Publication number: 20030193624
    Abstract: 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: Application
    Filed: April 10, 2003
    Publication date: October 16, 2003
    Applicants: SHARP KABUSHIKI KAISHA, JSR CORPORATION
    Inventors: Kazuki Kobayashi, Ikuo Sakono, Shinji Shiraki, Hirofumi Sasaki, Kazuaki Niwa
  • Publication number: 20030113640
    Abstract: 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: Application
    Filed: October 21, 2002
    Publication date: June 19, 2003
    Inventors: Ram W. Sabnis, Jonathan W. Mayo, Terry L. Brewer, Michael D. Stroder, Kiyomi Ema, Yasuhisa Sone, Takayasu Nihira, Kazuhiro Aoba, Akira Yanagimoto
  • Patent number: 6579624
    Abstract: 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: Grant
    Filed: November 28, 2001
    Date of Patent: June 17, 2003
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Chaun-gi Choi, Young-rag Do, Joon-bae Lee, Chang-won Park
  • Patent number: 6576383
    Abstract: 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: Grant
    Filed: November 9, 2001
    Date of Patent: June 10, 2003
    Assignee: Thomson Licensing S.A.
    Inventor: Liyou Yang
  • Publication number: 20030059692
    Abstract: 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: Application
    Filed: September 25, 2001
    Publication date: March 27, 2003
    Inventors: Samuel Pearlman, Robert Earl Kreider, Richard LaPeruta
  • Patent number: 6531252
    Abstract: 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: Grant
    Filed: July 19, 2002
    Date of Patent: March 11, 2003
    Assignee: Thomson Licensing S.A.
    Inventors: Kangning Liang, Victoria Ann Rebar
  • Patent number: 6524154
    Abstract: 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: Grant
    Filed: May 16, 2002
    Date of Patent: February 25, 2003
    Assignee: Micron Technology, Inc.
    Inventors: Zhongyi Xia, Jimmy J. Browning, Charles M. Watkins, David A. Cathey
  • Publication number: 20020182522
    Abstract: 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: Application
    Filed: September 5, 2001
    Publication date: December 5, 2002
    Inventors: Ram W. Sabnis, Jonathan W. Mayo, Terry L. Brewer, Michael D. Stroder, Kiyomi Ema, Yasuhisa Sone, Takayasu Nihira, Kazuhiro Aoba, Akira Yanagimoto
  • Publication number: 20020155364
    Abstract: 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: Application
    Filed: April 20, 2001
    Publication date: October 24, 2002
    Inventors: David Trost, Francis C. Chilese
  • Patent number: 6432593
    Abstract: 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: Grant
    Filed: July 28, 2000
    Date of Patent: August 13, 2002
    Assignee: Candescent Technologies Corporation
    Inventors: John D. Porter, Bob L. Mackey, Robert G. Neimeyer, Christopher J. Spindt, David C. Chang, Kris E. Sahlstrom
  • Patent number: 6421187
    Abstract: 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: Grant
    Filed: September 13, 2001
    Date of Patent: July 16, 2002
    Assignee: Koninklijke Philips Electronics N. V.
    Inventors: Tewe Hiepke Heemstra, Geert Jan Van Der Meer
  • Publication number: 20020090560
    Abstract: 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: Application
    Filed: November 21, 2001
    Publication date: July 11, 2002
    Applicant: Ferro GmbH
    Inventor: Hans-Peter Letschert
  • Patent number: 6391504
    Abstract: 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: Grant
    Filed: May 22, 1998
    Date of Patent: May 21, 2002
    Assignee: Hitachi Chemical Co., Ltd.
    Inventors: Seiji Tai, Yoshiyuki Horibe, Hiroyuki Tanaka, Takeshi Nojiri, Kazuya Satou, Naoki Kimura, Mariko Shimamura
  • Patent number: 6387576
    Abstract: 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: Grant
    Filed: December 21, 2000
    Date of Patent: May 14, 2002
    Assignees: Samsung SDI Co., Ltd., Ivan Z. Indutnyy, Petro E. Shepelizvyi, Kateryna V. Michailoyskaya
    Inventors: Ivan Indutnyy Z., Petro Shepeliavyi E., Kateryna Michailovskaya V., Chang-won Park, Joon-bae Lee, Yong Han
  • Patent number: 6383696
    Abstract: 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: Grant
    Filed: February 12, 2001
    Date of Patent: May 7, 2002
    Assignee: Micron Technology, Inc.
    Inventor: Jefferson O. Nemelka
  • Publication number: 20020039693
    Abstract: 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: Application
    Filed: July 17, 2001
    Publication date: April 4, 2002
    Inventor: Ikuya Kurosaki
  • Publication number: 20020018946
    Abstract: 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: Application
    Filed: August 13, 2001
    Publication date: February 14, 2002
    Inventors: Takeshi Nojiri, Hideyasu Tsuiki, Hiroyuki Tanaka, Yumiko Wada, Seiji Tai, Seikichi Tanno, Hajime Kakumaru, Kazuya Sato, Naoki Kimura, Ikuo Mukai
  • Patent number: 6329111
    Abstract: 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: Grant
    Filed: January 22, 1997
    Date of Patent: December 11, 2001
    Assignee: Hitachi Chemical Company
    Inventors: Takeshi Nojiri, Hideyasu Tsuiki, Hiroyuki Tanaka, Yumiko Wada, Seiji Tai, Seikichi Tanno, Hajime Kakumaru, Kazuya Sato, Naoki Kimura, Ikuo Mukai
  • Publication number: 20010002302
    Abstract: Disclosed are a phosphor pattern which comprises a calcination product of a phosphor pattern precursor containing
    Type: Application
    Filed: January 8, 2001
    Publication date: May 31, 2001
    Inventors: Naoki Kimura, Seiji Tai, Hiroyuki Tanaka, Takeshi Nojiri, Kazuya Satou, Yoshiyuki Horibe, Mariko Shimamura, Toranosuke Ashizawa, Eiji Fujita, Seikichi Tanno
  • Publication number: 20010001696
    Abstract: 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: Application
    Filed: May 22, 1998
    Publication date: May 24, 2001
    Inventors: SEIJI TAI, YOSHIYUKI HORIBE, HIROYUKI TANAKA, TAKESHI NOJIRI, KAZUYA SATOU, NAOKI KIMURA, MARIKO SHIMAMURA
  • Patent number: 6165657
    Abstract: 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: Grant
    Filed: August 27, 1998
    Date of Patent: December 26, 2000
    Assignee: Orion Electric Co., Ltd.
    Inventors: Sang Youl Yoon, Dong Ky Shin, Hyo Sup Lee
  • Patent number: 6159645
    Abstract: 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: Grant
    Filed: February 9, 1998
    Date of Patent: December 12, 2000
    Assignee: Samsung Display Devices Co., Ltd.
    Inventors: Andre Wilpert, Gabi Grutzner, Kerstin Schulze-Matthai, Jurgen Bendig, Klaus Tummel
  • Patent number: 6126988
    Abstract: 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: Grant
    Filed: February 28, 1997
    Date of Patent: October 3, 2000
    Assignee: Candescent Technologies Corporation
    Inventor: Paul M. Drumm
  • Patent number: 6114404
    Abstract: 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: Grant
    Filed: March 22, 1999
    Date of Patent: September 5, 2000
    Assignee: Corning Incorporated
    Inventors: John S. Deeken, Ronald E. Johnson, Lung-Ming Wu, Khalil M. Moussa
  • Patent number: 6103432
    Abstract: 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: Grant
    Filed: April 12, 1999
    Date of Patent: August 15, 2000
    Assignee: Samsung Display Devices Co., Ltd.
    Inventors: Hyun-jin Kim, Hong-kyu Choi, Ki-jun Kim
  • Patent number: 6071657
    Abstract: 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: Grant
    Filed: January 28, 1999
    Date of Patent: June 6, 2000
    Assignee: Sony Corporation
    Inventors: Tsuneo Kusunoki, Norihiro Tateyama, Katsutoshi Ohno
  • Patent number: 6037086
    Abstract: 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: Grant
    Filed: June 16, 1998
    Date of Patent: March 14, 2000
    Assignee: 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
  • Patent number: 6022651
    Abstract: 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: Grant
    Filed: January 29, 1996
    Date of Patent: February 8, 2000
    Assignee: Samsung Display Devices Co., Ltd.
    Inventor: Jong Ho Cho
  • Patent number: 6022652
    Abstract: 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: Grant
    Filed: February 23, 1996
    Date of Patent: February 8, 2000
    Assignee: Candescent Technologies Corporation
    Inventors: Duane A. Haven, Paul M. Drumm, Robert M. Duboc, Jr.
  • Patent number: 6013400
    Abstract: 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: Grant
    Filed: February 9, 1998
    Date of Patent: January 11, 2000
    Assignee: Thomson Consumer Electronics, Inc.
    Inventors: Richard LaPeruta, Istvan Gorog
  • Patent number: 6008577
    Abstract: 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: Grant
    Filed: December 1, 1997
    Date of Patent: December 28, 1999
    Assignee: Micron Technology, Inc.
    Inventors: Robert T. Rasmussen, Charles M. Watkins, Surjit S. Chadha
  • Patent number: 5998085
    Abstract: 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: Grant
    Filed: June 25, 1997
    Date of Patent: December 7, 1999
    Assignee: 3M Innovative Properties
    Inventors: Thomas A. Isberg, Claire A. Jalbert, John S. Staral, William A. Tolbert, Martin B. Wolk
  • Patent number: 5989649
    Abstract: 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: Grant
    Filed: January 22, 1999
    Date of Patent: November 23, 1999
    Assignees: Kabushiki Kaisha Toshiba, Fuji Pigment Co., Ltd.
    Inventors: Takeo Itou, Hidemi Matsuda, Hisashi Chigusa, Kazuo Sakai, Masaru Fukuda
  • Patent number: 5955226
    Abstract: There is disclosed a display screen obtained such that a first pigment layer and a resist layer are exposed and developed, then a second pigment layer is formed on the photoresist pattern, and the resultant structure is coated with a resist decomposition agent to remove the photoresist pattern and the second pigment layer formed on the photoresist pattern.
    Type: Grant
    Filed: September 24, 1997
    Date of Patent: September 21, 1999
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hidemi Matsuda, Takeo Itou, Makoto Onodera, Yoshinori Takahashi, Norihisa Nakao
  • Patent number: 5942358
    Abstract: A method of forming a fluorescent screen, such as a black matrix or a color filter, on a front panel of a cathode ray tube is described. The method comprises the steps of forming a photosensitive adhesion layer on an inner surface of the front panel, exposing the photosensitive adhesion layer through a color selecting electrode having a plurality of slots for reducing adhesion level of exposed area of the photosensitive adhesion layer, bringing a pigment layer provided on a supporting sheet into intimate contact with the photosensitive adhesion layer, applying pressure to the pigment layer and the photosensitive layer, and peeling off the supporting sheet from the pigment layer. Alternatively, a pigment may be dispersed in the photosensitive adhesion pigment layer.
    Type: Grant
    Filed: August 2, 1996
    Date of Patent: August 24, 1999
    Assignee: Sony Corporation
    Inventors: Masaru Ihara, Katsutoshi Ohno, Hiroshi Uchida, Katsuhiko Kuroda
  • Patent number: 5912056
    Abstract: A method for forming a conductively coated matrix structure for separating rows and columns of sub-pixels on the faceplate of a flat panel display device. In one embodiment, the present invention deposits a photoresistive material over the interior surface of a faceplate having a non-conductive matrix structure formed thereon. The photoresistive material is deposited into sub-pixel regions separated by the matrix structure. The photoresistive material is dried and exposed in the sub-pixel regions. After unexposed photoresistive material is removed, a layer of aluminum is evaporated over the interior surface of the faceplate such that the matrix structure and the exposed layer of photoresistive material in the sub-pixel regions is coated with a conductive layer of aluminum. Next, the present invention applies an etchant to the exposed photoresistive material disposed in the sub-pixel regions.
    Type: Grant
    Filed: March 31, 1997
    Date of Patent: June 15, 1999
    Assignee: Candescent Technologies Corporation
    Inventor: Paul M. Drumm