Polymeric Mixture Patents (Class 430/197)
  • Patent number: 11500290
    Abstract: An adhesion promoter composition comprising at least one of the following compounds: (a) a cyclic compound having the formula: (b) a non-cyclic compound having the formula: wherein R1 and R2 each independently represents a non-photoactive phenyl, a photoactive phenyl or a C1-C4 alkyl; R3 represents a non-photoactive phenyl; R4 represents a photoactive phenyl; W represents Si or Ge; n represents an integer of value greater than 1; m represents an integer between 0 and 1.
    Type: Grant
    Filed: November 13, 2018
    Date of Patent: November 15, 2022
    Assignee: International Business Machines Corporation
    Inventors: Dario Goldfarb, Bharat Kumar, Ekmini Anuja De Silva, Jing Guo
  • Patent number: 9971189
    Abstract: The disclosure discloses a color filter substrate, a display panel and a display device. The display panel includes a plurality of pixels, each of which includes a plurality of sub-pixels of various colors. The color filter substrate includes a base substrate, a plurality of black matrixes formed on the base substrate, a plurality of opening regions disposed between the back matrixes and corresponding to the sub-pixels in a one-to-one correspondence relationship, and a color filter layer filled in each of the opening regions; the color filter layer is doped with quantum dots which can generate light after excited, color of which is the same as the color of the corresponding sub-pixels. The color filter substrate improves purity of light transmitted through the color filter layer and in turn improves display color gamut of the display device.
    Type: Grant
    Filed: December 11, 2013
    Date of Patent: May 15, 2018
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE DISPLAY TECHNOLOGY CO., LTD.
    Inventors: Jun Wu, Hongming Zhan, Chao Tian
  • Patent number: 9862794
    Abstract: The present invention provides a co-condensate containing a structural unit derived from p-tert-butylphenol, a structural unit derived from o-phenylphenol, and a structural unit derived from resorcin, and having a softening point of 150° C. or lower; a method for producing the co-condensate including reacting a mixture of p-tert-butylphenol and o-phenylphenol with formaldehyde in the presence of an alkali, and then reacting resorcin in a 0.8-fold molar amount or more relative to a total amount of p-tert-butylphenol and o-phenylphenol; and a rubber composition containing the co-condensate.
    Type: Grant
    Filed: March 19, 2014
    Date of Patent: January 9, 2018
    Assignee: TAOKA CHEMICAL CO., LTD.
    Inventors: Kazuhiro Matsui, Nobuyuki Sato, Yoshiteru Ota
  • Patent number: 9718950
    Abstract: A directed self-assembly composition for pattern formation, includes two or more kinds of polymers. The two or more kinds of polymers each do not have a silicon atom in a main chain thereof. At least one of the two or more kinds of polymers has a group binding to the polymerizing end of the main chain and having a hetero atom.
    Type: Grant
    Filed: June 20, 2013
    Date of Patent: August 1, 2017
    Assignee: JSR CORPORATION
    Inventors: Shinya Minegishi, Yuji Namie, Tomoki Nagai
  • Patent number: 9169367
    Abstract: The present invention appreciates that compounds comprising nitrogen-containing moieties that are at least divalent (e.g., urea, urethane, amide, etc.) can be reacted with azides using at least radiation energy to initiate the reaction between at least a portion of the compounds and the azides to form membranes that have surprisingly high selectivities for acid gases relative to nonpolar gases such as hydrocarbons. The membranes are also resistant to CO2 plasticization and have high acid gas flux characteristics. The resultant membranes can be extremely thin (e.g., 10 micrometers or less), which promotes high permeability for the acid gas and can translate into high productivity on a scaled-up, industrial level.
    Type: Grant
    Filed: September 18, 2013
    Date of Patent: October 27, 2015
    Assignee: Dow Global Technologies LLC
    Inventors: Scott T. Matteucci, Junqiang Liu, Ahmad Madkour, William J. Harris
  • Patent number: 9053941
    Abstract: Methods for the fabrication of nanostructures, including nanostructures comprised of carbon nanotubes, and the nanostructures, devices, and assemblies prepared by these methods, are described.
    Type: Grant
    Filed: May 7, 2010
    Date of Patent: June 9, 2015
    Assignee: The Trustees Of The University Of Pennsylvania
    Inventors: Alan T. Johnson, Jr., Ryan A. Jones, Samuel M. Khamis
  • Publication number: 20140242515
    Abstract: A photoresist composition including a binder resin including a novolac resin represented by Chemical Formula 1, a diazide photosensitive initiator, and a solvent including a base solvent and an auxiliary solvent, wherein the base solvent includes propylene glycol monomethyl ether acetate, and the auxiliary solvent includes dimethyl-2-methylglutarate and ethyl beta-ethoxypropionate, wherein in Chemical Formula 1, R1 to R9 are each independently a hydrogen atom or an alkyl group, “a” is an integer number from 0 through 10, “b” is an integer number from 0 through 100, and “c” is an integer number from 1 through 10.
    Type: Application
    Filed: August 7, 2013
    Publication date: August 28, 2014
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Gwui-Hyun PARK, Pil Soon HONG, Jinho JU, Taegyun KIM, Jin-Su BYUN, Dong Min KIM, Seung Ki KIM, Doo Youn LEE
  • Patent number: 8105745
    Abstract: There is provided a class of crosslinking compound, said compound comprising (i) one or more fluorinated aromatic group; and (ii) one or more ionizable group, wherein the crosslinking compound is soluble in at least one polar solvent. Methods of preparing the crosslinking compounds are also disclosed. There is further provided devices obtainable from the methods of preparing the crosslinking compounds.
    Type: Grant
    Filed: July 4, 2006
    Date of Patent: January 31, 2012
    Assignee: National University of Singapore
    Inventors: Peter Kian-Hoon Ho, Lay-Lay Chua, Siong-Hee Khong, Sankaran Sivaramakrishnan, Perq-Jon Chia
  • Patent number: 7887994
    Abstract: Disclosed herein is a photoresist composition suitable for coating onto a large substrate and having improved coating uniformity to prevent occurrence of stains, a coating method thereof, a method of forming an organic film pattern using the same, and a display device fabricated thereby. The present invention thus provides a photoresist composition comprising a polymeric resin with an incorporated polysiloxane resin, a photosensitive compound, and an organic solvent. Accordingly, the photoresist composition can be coated onto a large substrate by a spinless coating method, and thereby coating uniformity can be improved, the occurrence of stains such as cumulous stains and resin streaks can be prevented, and the coating rate and quality of a final product prepared using the photoresist composition can also thereby be enhanced.
    Type: Grant
    Filed: February 1, 2008
    Date of Patent: February 15, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yeong Beom Lee, Kyung Seop Kim, Jun Young Lee, Sung Wook Kang
  • Patent number: 7285363
    Abstract: A method for crosslinking one or more molecules comprises crosslinking the one or more molecules with a photactivatable crosslinker by one-photon or multi-photon excitation, wherein the crosslinker comprises at least two photoactive groups linked by a bridging moiety, and further wherein the point volume of the activation has at least one dimension of less than about 1 micron. The method is of particular utility for water-soluble molecules, particularly biologically active water-soluble molecules.
    Type: Grant
    Filed: November 10, 2003
    Date of Patent: October 23, 2007
    Assignee: The University of Connecticut
    Inventors: Paul J. Campagnola, Amy R. Howell, Jun Wang, Steven L. Goodman
  • Patent number: 7189488
    Abstract: A polyimide precursor in accordance with the present invention contains amide acid ester units, either imide units or amide acid units, and fluorine atoms bonded to some of these structural units. A polyimide precursor resin composition in accordance with the present invention contains either such a polyimide precursor or resins separately containing the structural units. Polyimide precursors in accordance with the present invention and resin compositions based on the same therefore have excellent properties and are suitably used in particular to form a particular pattern and for other purposes by impart photosensitivity to them.
    Type: Grant
    Filed: December 10, 2002
    Date of Patent: March 13, 2007
    Assignee: Kaneka Corporation
    Inventors: Toshio Yamanaka, Koji Okada, Kaoru Takagahara
  • Patent number: 7108951
    Abstract: The photosensitive resin composition comprising: (A) a resin containing (A1) a repeating unit having at least two groups represented by the specific general formula; and (B) a compound capable of generating an acid by the action with one of an actinic ray and a radiation.
    Type: Grant
    Filed: February 26, 2003
    Date of Patent: September 19, 2006
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Tomoya Sasaki, Kazuyoshi Mizutani, Shinichi Kanna
  • Patent number: 7015256
    Abstract: A photosensitive composition for forming a dielectric of the present invention comprising inorganic particles, an alkali developable resin and additives, wherein the additives comprise a compound having a quinonediazido group (C1), a compound containing at least two alkyletherified amino groups in the molecule (C2) and a thermal acid generator (C3), or wherein the inorganic particles comprise inorganic superfine particles (A-I) having a mean particle diameter of less than 0.05 ?m and inorganic fine particles (A-II) having a mean particle diameter of not less than 0.05 ?m. The composition can be calcined at low temperatures to form a dielectric layer with high dimensional precision, said layer having a high dielectric constant and a low dielectric loss. Also provided are a dielectric and an electronic part prepared from the composition.
    Type: Grant
    Filed: December 26, 2002
    Date of Patent: March 21, 2006
    Assignee: JSR Corporation
    Inventors: Nobuyuki Ito, Hideaki Masuko, Satomi Hasegawa, Atsushi Ito, Katsumi Inomata
  • Patent number: 6908719
    Abstract: The present invention relates to a water-soluble photosensitive compound represented by the general formula (1): or by the general formula (2): in the formula, X represents a direct bond, an alkylene group containing 1 to 5 carbon atoms, —CH2O—, —OCH2—, —CH2OCH2—, —O—, —S— or —SO2—, and Z represents —SO3?.Q+, —COO?.Q+ or —SO2NR2, in which Q+ represents Li+, Na+, K+ or N+R4 and R represents a hydrogen atom and/or an alkyl group containing 1 to 5 carbon atoms, said alkyl group optionally having one hydroxy, ether, carbonyl, carbonyloxy or oxycarbonyl group, wherein a photosensitive group has an absorption maximum wavelength of not longer than 305 nm in the ultraviolet absorption spectrum thereof.
    Type: Grant
    Filed: March 31, 2000
    Date of Patent: June 21, 2005
    Assignees: Sanyo Chemical Industries, Ltd., Sony Corporation
    Inventors: Tetsuya Watanabe, Takao Mukai, Yasunori Niwa, Keiko Noda, Chiyoji Watanabe
  • Patent number: 6830872
    Abstract: Disclosed is planographic printing plate precursor comprising a support having disposed thereon an image forming layer containing a fluorine macromolecular compound having a structural unit derived from a monomer represented by the following general formula (I). In the general formula (I), R0 represents a hydrogen atom, a methyl group, a cyano group or a halogen atom. X represents a single bond or a divalent connecting group. R1 to R6 each independently represent a hydrogen atom, an alkyl group, a fluorine atom or an alkyl group in which at least one hydrogen atom is substituted with a fluorine atom. Further, at least one of R1 to R6 represents a fluorine atom or an alkyl group in which at least one hydrogen atom is substituted with a fluorine atom.
    Type: Grant
    Filed: September 20, 2002
    Date of Patent: December 14, 2004
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kazuyoshi Mizutani, Shiro Tan
  • Patent number: 6821692
    Abstract: The present invention relates to novel thin layers for microsystem techniques and microstructuring. It is an object of the invention to provide thin layers which can be manufactured under less problems and more economically than the previous conventional layers, and which permit the use of existing technologies for microstructuring. The object is realized in that the thin layer is formed of an enzymatically degradable biopolymer in a range of layer thicknesses of from 30 nm to 3 &mgr;m. Biopolymeric thin layers manufactured according to the invention permit their application, after a respective structurizing, as test assays or in setting up substance libraries.
    Type: Grant
    Filed: February 4, 1999
    Date of Patent: November 23, 2004
    Assignee: Clondiag Chip Technologies GmbH
    Inventors: Eugen Ermantraut, Johann Michael Köhler, Torsten Schulz, Klaus Wohlfart, Stefan Wölfl
  • Publication number: 20040197701
    Abstract: Disclosed is a presensitized plate composed of a support having thereon an image recording layer which includes:
    Type: Application
    Filed: March 26, 2004
    Publication date: October 7, 2004
    Inventors: Tomoyoshi Mitsumoto, Ippei Nakamura
  • 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: 6709800
    Abstract: A presensitized plate for preparing a lithographic printing plate comprises a substrate provided thereon with a light-sensitive layer containing a fluoro-aliphatic group-containing copolymer prepared by copolymerizing at least (A) an addition polymerizable monomer having, on a side chain, a fluoro-aliphatic group in which hydrogen atoms are replaced with fluorine atoms and (B) a (meth)acrylate having an ester chain represented by a specific general formula. The use of the foregoing specific fluorine atom-containing polymer permits the formation of a light-sensitive layer having uniform surface condition without causing abnormality in the surface quality due to the foaming phenomenon observed during the production and also permits the production of a positive light-sensitive resin composition having excellent solubility and dispersibility in a developer.
    Type: Grant
    Filed: August 5, 2002
    Date of Patent: March 23, 2004
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kazuo Fujita, Shiro Tan
  • Patent number: 6444391
    Abstract: Photosensitive compositions prepared without use of a chromium compound. The compositions exhibit high resolution and satisfactory sensitivity, and do not cause environmental pollution. The photosensitive compositions contain a water-soluble azide compound which serves as a photocrosslinking agent and poly(N-vinylacetamide) that is photocrosslinkable in the presence of the water-soluble azide compound.
    Type: Grant
    Filed: January 2, 2001
    Date of Patent: September 3, 2002
    Assignees: Toyo Gosei Kogyo Co., Ltd., Showa Denko K.K.
    Inventors: Masaharu Watanabe, Noriaki Tochizawa
  • Patent number: 6398640
    Abstract: The invention relates top a light sensitive, aqueous alkali developing, negatively acting resist, comprising a phenolic resin as a binder, and a diazostilbene disulfonic acid ester light sensitive component, a solvent or mixture of solvents, and film forming and/or film stabilizing additives, and to a process for preparing the light sensitive component.
    Type: Grant
    Filed: October 18, 1999
    Date of Patent: June 4, 2002
    Assignee: Micro Resist Technology GmbH
    Inventors: Gabi Grützner, Anja Voigt, Jürgen Bendig, Ines Schmidt, Erika Sauer
  • Patent number: 6361926
    Abstract: The invention is a curable cyclobutarene based polymer comprising acid functional pendant groups. The cured polymer displays excellent qualities of toughness, adhesion, dielectric constant, and low stress. The preferred system is soluble in an aqueous base and can be used to generate patterned films with excellent resolution without the need to handle organic developer solvents.
    Type: Grant
    Filed: October 23, 1998
    Date of Patent: March 26, 2002
    Assignee: The Dow Chemical Company
    Inventors: Ying H. So, Robert A. DeVries, Mitchell G. Dibbs, Robert L. McGee, Edward O. Shaffer, II, Michael J. Radler, Richard P. DeCaire
  • Patent number: 6348298
    Abstract: A radiation sensitive composition comprising (A) a colorant containing a quinacridone pigment, a mixture of an isoindolinone pigment and a yellow organic pigment or a mixture of copper phthalocyanine blue and a green pigment, (B) an alkali-soluble resin, (C) a polyfunctional monomer and (D) a photopolymerization initiator. The composition is useful for production of an additive or subtractive color filter which is used in a reflection-type color liquid crystal display device.
    Type: Grant
    Filed: June 2, 2000
    Date of Patent: February 19, 2002
    Assignee: JSR Corporation
    Inventors: Kouichi Sakurai, Hiroaki Nemoto, Atsushi Kumano
  • Publication number: 20020012867
    Abstract: A photosensitive resin composition comprises a base resin (e.g., novolak resins, polyvinylphenol-series polymers), a first photoactive ingredient (e.g., diazobenzoquinone derivatives, diazonaphthoquinone derivatives) and a second photoactive ingredient (e.g., mixtures with azide compounds) each having an absorption range at wavelength &lgr;1 or &lgr;2, the wavelengths thereof being different from each other. Between the first and second photoactive ingredients, at least one photoactive ingredient is substantially inert at the absorption wavelength of the other. After exposing the photosensitive resin composition to a light to form a pattern, the whole surface of the photosensitive layer is exposed to a light of the other wavelength to make the surface hardly soluble (in the case a positive pattern is formed) or readily soluble (in the case a negative pattern is formed) in a developer, and developed, thereby forming a pattern of high resolution.
    Type: Application
    Filed: August 18, 1999
    Publication date: January 31, 2002
    Inventor: TOKUGEN YASUDA
  • Patent number: 6342330
    Abstract: Photosensitive compositions prepared without use of a chromium compound. The compositions exhibit high resolution and satisfactory sensitivity, and do not cause environmental pollution. The photosensitive compositions contain a water-soluble azide compound which serves as a photocrosslinking agent and poly(N-vinylacetamide) that is photocrosslinkable in the presence of the water-soluble azide compound.
    Type: Grant
    Filed: January 2, 2001
    Date of Patent: January 29, 2002
    Assignees: Toyo Gosei Kogyo Co., Ltd., Showa Denko K.K.
    Inventors: Masaharu Watanabe, Noriaki Tochizawa, Hirotaka Tagoshi, Tetsuhiko Yamaguchi
  • Patent number: 6309791
    Abstract: A polyimide precursor having repeating units of the formula: wherein R1 is a tetravalent organic group; and R2 is a divalent diphenyl group, is excellent in image formation and particularly suitable for forming a pattern using an i-line stepper, and gives a photosensitive resin composition by imparting photosensitivity to the polyimide precursor, said photosensitive resin composition being suitable for forming surface protective films for semiconductor devices or interlaminar insulating films for multilayer wiring boards.
    Type: Grant
    Filed: August 8, 2000
    Date of Patent: October 30, 2001
    Assignee: Hitachi Chemical Co.
    Inventors: Hideo Hagiwara, Yasunori Kojima, Makoto Kaji, Mitsumasa Kojima, Haruhiko Kikkawa
  • Publication number: 20010012597
    Abstract: Photosensitive compositions prepared without use of a chromium compound. The compositions exhibit high resolution and satisfactory sensitivity, and do not cause environmental pollution. The photosensitive compositions contain a water-soluble azide compound which serves as a photocrosslinking agent and poly(N-vinylacetamide) that is photocrosslinkable in the presence of the water-soluble azide compound.
    Type: Application
    Filed: January 2, 2001
    Publication date: August 9, 2001
    Inventors: Masaharu Watanabe, Noriaki Tochizawa, Hirotaka Tagoshi, Tetsuhiko Yamaguchi
  • Publication number: 20010004510
    Abstract: Novel silicon-containing polymer compounds, based on cyclic olefins. These polymer compounds can be used as photoresist materials and because they are transparent to radiation in the spectral range from 193 to 13 nm, which is highly energetic and strongly attenuated, are particularly advantageous as refractory bilayer photoresist materials for semiconductor wafer patterning processes that employ deep ultraviolet (DUV) and extreme ultraviolet (EUV) radiation.
    Type: Application
    Filed: December 19, 2000
    Publication date: June 21, 2001
    Inventor: David R. Wheeler
  • Publication number: 20010003633
    Abstract: Photosensitive compositions prepared without use of a chromium compound. The compositions exhibit high resolution and satisfactory sensitivity, and do not cause environmental pollution. The photosensitive compositions contain a water-soluble azide compound which serves as a photocrosslinking agent and poly(N-vinylacetamide) that is photocrosslinkable in the presence of the water-soluble azide compound.
    Type: Application
    Filed: January 2, 2001
    Publication date: June 14, 2001
    Inventors: Masaharu Watanabe, Noriaki Tochizawa, Hirotaka Tagoshi, Tetsuhiko Yamaguchi
  • Patent number: 6245478
    Abstract: A resist composition exhibiting an improved profile performance without impairing the resolution, the sensitivity, etc. which comprises a binder component; a radiation-sensitive component; and a succinimide compound represented by the following formula (I): wherein Q1 represents an alkyl group which may be optionally substituted with alkoxy, halogen or nitro, an alicyclic hydrocarbon residue, an aryl group, or an aralkyl group; and Q2, which may be the same as or different from Q1, represents hydrogen, an alkyl group which may be optionally substituted with alkoxy, halogen or nitro, an alicyclic hydrocarbon residue, an aryl group, or an aralkyl group.
    Type: Grant
    Filed: September 17, 1999
    Date of Patent: June 12, 2001
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Yasunori Uetani, Ichiki Takemoto
  • Patent number: 6194126
    Abstract: There are disclosed a photosensitive resin composition which comprises (A) a polyamic acid having recurring units represented by the formula (I): wherein R1 represents and R2 represents a divalent organic group, and (B) an acryl compound having an amino group, and also a photosensitive resin composition for an i-line stepper which further comprises a photoinitiator in addition to the photosensitive resin composition.
    Type: Grant
    Filed: August 20, 1998
    Date of Patent: February 27, 2001
    Assignee: Hitachi Chemical Co., Ltd.
    Inventors: Hideo Hagiwara, Makoto Kaji, Masataka Nunomura
  • Patent number: 6156478
    Abstract: Photocurable and photopattemable compositions are disclosed which comprise a) at least one copolymer derived from 1 to 99 parts by weight of at least one azlactone-functional monomer and 0 to 99 parts of at least one co-monomer; and b) at least one photocrosslinker. Articles are disclosed comprising a substrate and a gel layer of the cured composition which may be photopatterned with high resolution and used to bind biomolecules to the substrate.
    Type: Grant
    Filed: October 30, 1998
    Date of Patent: December 5, 2000
    Assignee: 3M Innovative Properties Company
    Inventors: Jie Liu, James G. Bentsen
  • Patent number: 6143475
    Abstract: A polyimide precursor having repeating units of the formula: ##STR1## wherein R.sup.1 is a tetravalent organic group; and R.sup.2 is a divalent diphenyl group, is excellent in image formation and particularly suitable for forming a pattern using an i-line stepper, and gives a photosensitive resin composition by imparting photosensitivity to the polyimide precursor, said photosensitive resin composition being suitable for forming surface protective films for semiconductor devices or interlaminar insulating films for multilayer wiring boards.
    Type: Grant
    Filed: May 22, 1998
    Date of Patent: November 7, 2000
    Assignee: Hitachi Chemical Co.
    Inventors: Hideo Hagiwara, Yasunori Kojima, Makoto Kaji, Mitsumasa Kojima, Haruhiko Kikkawa
  • Patent number: 6140007
    Abstract: Photosensitive compositions prepared without use of a chromium compound. The compositions exhibit high resolution and satisfactory sensitivity, and do not cause environmental pollution. The photosensitive compositions contain a water-soluble azide compound which serves as a photocrosslinking agent and poly(N-vinylformamide) that is photocrosslinkable in the presence of the water-soluble azide compound.
    Type: Grant
    Filed: May 12, 1999
    Date of Patent: October 31, 2000
    Assignee: Toyo Gosei Kogyo Co., Ltd.
    Inventors: Masaharu Watanabe, Noriaki Tochizawa, Yukari Imamura, Hideo Kikuchi
  • Patent number: 6127074
    Abstract: The present invention relates to photoresist solution for phosphor slurry for use in the color cathode ray tube. The photoresist solution of the present invention comprises Diazo or Bisazide photosensitizer; polymer. which is mixed with said Diazo or Bisazide photosensitizer, obtained by polymerization of hydroxy ethyl acrylate base. The photoresist solution of the present invention improves the adhesive strength by using of the Diazo or Bisazide photosensitizer and the polymer, thus the green, blue and red phosphor screen being uniformly formed and the color residue being disappeared. Further, since the photosensitizer not containing heavy metal is used, it does not cause any environmental problem. Also, it can be stored for a long time by using the initiator without hydrochloric acid at the time of polymerization.
    Type: Grant
    Filed: December 11, 1998
    Date of Patent: October 3, 2000
    Assignee: Samsung Display Devices Co., Ltd.
    Inventors: Seung-Jun You, Eak-Cheol Eam, Young-Jong Kang, Chang-Wook Kim, Gi-Wook Kang, Eun-Ha Heo
  • Patent number: 6090525
    Abstract: An actinic radiation sensitive polymer composition containing(a) a polyimide precursor obtainable by the interaction of an amine compound having a photocrosslinking group with carboxyl groups of a poly(amic acid) chain, and(b) a photoinitiator and/or photosensitizer,in which the degree of imidization Ia is 0.03.ltoreq.Ia.ltoreq.0.6, has the characteristic features of both good stability of viscosity with lapse of time and good photosensitive performance.
    Type: Grant
    Filed: May 18, 1998
    Date of Patent: July 18, 2000
    Assignee: Toray Industries, Inc.
    Inventors: Tomoyuki Yuba, Yoshihiro Ishikawa, Masaya Asano
  • Patent number: 6071667
    Abstract: A polyimide precursor having repeating units of the formula: wherein R.sup.1 is a tetravalent organic group; and R.sup.2 is a divalent diphenyl group, is excellent in image formation and particularly suitable for forming a pattern using an i-line stepper, and gives a photosensitive resin composition by imparting photosensitivity to the polyimide precursor, said photosensitive resin composition being suitable for forming surface protective films for semiconductor devices or interlaminar insulating films for multilayer wiring boards.
    Type: Grant
    Filed: April 10, 1996
    Date of Patent: June 6, 2000
    Assignee: Hitachi Chemical Co., Ltd.
    Inventors: Hideo Hagiwara, Yasunori Kojima, Makoto Kaji, Mitsumasa Kojima, Haruhiko Kikkawa
  • Patent number: 6037085
    Abstract: Printing plates having a photoresist layer thereon that can be exposed by a computer controller laser have improved sensitivity and do not require a photomask step. We have found photoresists that include a film forming polymer, an organo azide and a photosensitive dye that absorbs light at the frequency of the patterning laser and converts it to heat energy. The heat energy in turn elevates the temperature of the organo azide above its dissociation temperature, destroying the azide in areas exposed to the light source, and solubilizing those regions. A post pattern exposure flood exposure with ultraviolet light hardens the unexposed resist, improving its resistance to etch solvents.
    Type: Grant
    Filed: June 19, 1996
    Date of Patent: March 14, 2000
    Assignee: Printing Development Inc.
    Inventors: Bruce Holman, III, Jeffrey G. Zaloom, Peiguang Zhou, Larry Sharkozy, Merlin L. Mulvey
  • Patent number: 6020093
    Abstract: The photosensitive compound of the present invention contains the following unit: ##STR1## and is particularly expressed by the following formula: ##STR2## Different photosensitive resin compositions can be prepared from this novel photosensitive resin compound, and the resulting photosensitive resin compositions do not raise the problem of environmental pollution, exhibit high resolution, possess a high level of sensitivity, and exhibit excellent adhesion with substrates, coating characteristics and storage stability.
    Type: Grant
    Filed: May 13, 1998
    Date of Patent: February 1, 2000
    Assignee: Toyo Gosei Kogyo, Ltd.
    Inventors: Toru Shibuya, Jian Rong Xie, Noriaki Tochizawa
  • Patent number: 5962192
    Abstract: Printing plates having a photoresist layer thereon that can be exposed by a computer controller laser have improved sensitivity and do not require a photomask step. We have found photoresists that include a film forming polymer, an organo azide and a photosensitive dye that absorbs light at the frequency of the patterning laser and converts it to heat energy. The heat energy in turn elevates the temperature of the organo azide above its dissociation temperature, destroying the azide in areas exposed to the light source, and solubilizing those regions.Flood exposure with ultraviolet light hardens the resist and can be performed prior to or after pattern exposure.
    Type: Grant
    Filed: June 11, 1997
    Date of Patent: October 5, 1999
    Assignee: Printing Developments, Inc.
    Inventors: Bruce Holman, III, Jeffrey G. Zaloom, Peiguang Zhou, Larry Sharkozy, Merlin L. Mulvey
  • Patent number: 5948592
    Abstract: A water-soluble photoresist composition is provided which comprises a water-soluble photosensitive composition containing a casein component and a water-soluble photosensitive agent and at least one calcium salt of an organic acid. The photoresist composition has excellent sensitivity, resolution, and etching resistance and can be used for the production of highly refined electronic components such as shadow masks, lead frame, etc.
    Type: Grant
    Filed: July 7, 1998
    Date of Patent: September 7, 1999
    Assignee: Fuji Chemicals Industrial Co., Ltd.
    Inventors: Hiroshi Umehara, Takateru Asano
  • Patent number: 5925492
    Abstract: A radiation-sensitive resin composition comprising a solution of an alkali-soluble resin and a radiation-sensitive compound in a solvent comprising a monoxymono-carboxylic acid ester. This composition has a high storage stability (i.e., a very small amount of fine particles are formed during storage) and is suited for use as a resist for making integrated circuits.
    Type: Grant
    Filed: September 15, 1997
    Date of Patent: July 20, 1999
    Assignee: JSR Corporation
    Inventors: Yoshihiro Hosaka, Ikuo Nozue, Masashige Takatori, Yoshiyuki Harita
  • Patent number: 5891749
    Abstract: The present invention discloses a process for forming a photoresist pattern in a semiconductor device. In this process, first, a semiconductor substrate where an objective layer for the formation of a pattern is formed thereon, is provided. Afterwards, an alkaline aqueous solution is formed on the semiconductor substrate using either spray, coating, or deposition method. Thereafter, a priming step is performed. Lastly, a photoresist pattern is formed on the semiconductor substrate.
    Type: Grant
    Filed: December 26, 1996
    Date of Patent: April 6, 1999
    Assignee: Hyundai Electronics Industries Co., Ltd.
    Inventor: Ki-Yeop Park
  • Patent number: 5885744
    Abstract: A photoresist composition containing a photo-curing polymer and a photosensitive agent, wherein the photosensitive agent comprises at least two compounds selected from the group consisting of 4,4'-diazido-2,2'-stilbenedisulfonate sodium salt, 4,4'-diazo-2,2'-dibenzalacetone disulfonate disodium salt, 2,5-bis(4-azido-2-sulfobenzylidene) cyclopentanone disodium salt and 4,4'-diazido-2,2'-dicinnamylideneacetone sulfonate salt. By performing a lithography process using the photoresist composition, the exposure time can be shortened, thereby improving the yield of products.
    Type: Grant
    Filed: July 14, 1997
    Date of Patent: March 23, 1999
    Assignee: Samsung Display Devices Co., Ltd.
    Inventors: Seung-joon Yoo, Ik-chul Lim, Chang-wook Kim, Ki-wook Kang
  • Patent number: 5856059
    Abstract: There are disclosed a photosensitive resin composition which comprises(A) a polyamic acid having recurring units represented by the formula (I): ##STR1## represents a divalent organic group, and (B) an acryl compound having an amino group, and also a photosensitive resin composition for an i-line stepper which further comprises a photoinitiator in addition to the photosensitive resin composition.
    Type: Grant
    Filed: June 17, 1996
    Date of Patent: January 5, 1999
    Assignee: Hitachi Chemical Co., Ltd.
    Inventors: Hideo Hagiwara, Makoto Kaji, Masataka Nunomura
  • Patent number: 5853928
    Abstract: A method for electrophotographically forming a Braun tube's fluorescent layer coats conductive and photoconductive layers on the internal surface of a Braun tube's panel. The photoconductive layer is formed of a water soluble photoconductive liquid including a water soluble binder, allowing a part of the photoconductive layer to be selectively exposed to a visible ray. The photoresist of the above photoconductive liquid is substituted with dye, which can be processed through general exposure and solvent, allowing the fluorescent layer to be formed on a Braun tube under the same conditions as a typical Braun tube production process without darkroom processing.
    Type: Grant
    Filed: December 18, 1995
    Date of Patent: December 29, 1998
    Assignee: Samsung Display Devices Co., Ltd.
    Inventor: Min-Ho Kim
  • Patent number: 5846686
    Abstract: For forming a fine pattern of ferroelectric film without using a resist, a solution containing polyalkoxide having ferroelectric components, as a base part, and functional groups to be activated when exposed to electromagnetic waves or corpuscular beams is used as a pattern forming agent. The pattern form agent is coated onto a substrate, and then electromagnetic or corpuscular beams are radiated thereover to form crosslinks between molecules in the agent. After the crosslinks are cured, the portions devoid of any crosslink and hence uncured are removed using a solvent. Then the molecules associated with the crosslinks remaining on the substrate are then heated to form a ferroelectric crystal.
    Type: Grant
    Filed: January 29, 1997
    Date of Patent: December 8, 1998
    Assignee: Rohm Co., Ltd.
    Inventor: Akira Kamisawa
  • Patent number: 5807657
    Abstract: A polyvinyl alcohol base photosensitive resin comprised of a polyvinyl alcohol base polymer compound with the structural units of formulae (I) and (II) ##STR1## as well as a photosensitive resin composition comprising this resin and, optionally, an anionic additive and a method of forming a pattern using this photosensitive composition. R.sup.1 is a residue of a heterocyclic ring with quaternarized aromatic species, R.sup.2 is hydrogen atom or lower alkoxyl group, M is 0 or 1, and n is 1 to 6. X.sup.1, X.sup.2 are hydrogen atom, sodium, potassium or ammonium ion. These resins aid in water solubility, compatibility and sensitivity and are used in forming screen printing plates, black matrix or phosphor pattern formation of color cathode ray tubes, color filters, color printing proofs and etching resists.
    Type: Grant
    Filed: December 11, 1996
    Date of Patent: September 15, 1998
    Assignee: Toyo Gosei Kogyo Co., Ltd.
    Inventors: Hideo Kikuchi, Noriaki Tochizawa, Yasuo Kuniyoshi
  • Patent number: RE37033
    Abstract: The present invention provides a pigment dispersed color-filter composition containing a binder polymer such as an alkali-soluble block copolymer; a radiation-sensitive compound; and a pigment. The pigment-dispersed color-filter composition which further contains an organic medium, or an organic medium and a carboxylic acid is also provided.
    Type: Grant
    Filed: January 3, 1997
    Date of Patent: January 30, 2001
    Assignee: JSR Corporation
    Inventors: Yusuke Tajima, Nobuo Bessho, Fumitaka Takinishi, Hideaki Masuko, Yasuaki Yokoyama
  • Patent number: RE40728
    Abstract: The invention is a curable cyclobutarene based polymer comprising acid functional pendant groups. The cured polymer displays excellent qualities of toughness, adhesion, dielectric constant, and low stress. The preferred system is soluble in an aqueous base and can be used to generate patterned films with excellent resolution without the need to handle organic developer solvents.
    Type: Grant
    Filed: March 24, 2004
    Date of Patent: June 9, 2009
    Inventors: Ying H. So, Robert A. DeVries, Mitchell G. Dibbs, Robert L. McGee, Edward O. Shaffer, II, Michael J. Radler, Richard P. DeCaire