Polymeric Mixture Patents (Class 430/197)
-
Patent number: 11500290Abstract: 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: GrantFiled: November 13, 2018Date of Patent: November 15, 2022Assignee: International Business Machines CorporationInventors: Dario Goldfarb, Bharat Kumar, Ekmini Anuja De Silva, Jing Guo
-
Patent number: 9971189Abstract: 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: GrantFiled: December 11, 2013Date of Patent: May 15, 2018Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE DISPLAY TECHNOLOGY CO., LTD.Inventors: Jun Wu, Hongming Zhan, Chao Tian
-
Patent number: 9862794Abstract: 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: GrantFiled: March 19, 2014Date of Patent: January 9, 2018Assignee: TAOKA CHEMICAL CO., LTD.Inventors: Kazuhiro Matsui, Nobuyuki Sato, Yoshiteru Ota
-
Patent number: 9718950Abstract: 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: GrantFiled: June 20, 2013Date of Patent: August 1, 2017Assignee: JSR CORPORATIONInventors: Shinya Minegishi, Yuji Namie, Tomoki Nagai
-
Patent number: 9169367Abstract: 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: GrantFiled: September 18, 2013Date of Patent: October 27, 2015Assignee: Dow Global Technologies LLCInventors: Scott T. Matteucci, Junqiang Liu, Ahmad Madkour, William J. Harris
-
Patent number: 9053941Abstract: 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: GrantFiled: May 7, 2010Date of Patent: June 9, 2015Assignee: The Trustees Of The University Of PennsylvaniaInventors: Alan T. Johnson, Jr., Ryan A. Jones, Samuel M. Khamis
-
Publication number: 20140242515Abstract: 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: ApplicationFiled: August 7, 2013Publication date: August 28, 2014Applicant: 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: 8105745Abstract: 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: GrantFiled: July 4, 2006Date of Patent: January 31, 2012Assignee: National University of SingaporeInventors: Peter Kian-Hoon Ho, Lay-Lay Chua, Siong-Hee Khong, Sankaran Sivaramakrishnan, Perq-Jon Chia
-
Patent number: 7887994Abstract: 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: GrantFiled: February 1, 2008Date of Patent: February 15, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Yeong Beom Lee, Kyung Seop Kim, Jun Young Lee, Sung Wook Kang
-
Patent number: 7285363Abstract: 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: GrantFiled: November 10, 2003Date of Patent: October 23, 2007Assignee: The University of ConnecticutInventors: Paul J. Campagnola, Amy R. Howell, Jun Wang, Steven L. Goodman
-
Patent number: 7189488Abstract: 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: GrantFiled: December 10, 2002Date of Patent: March 13, 2007Assignee: Kaneka CorporationInventors: Toshio Yamanaka, Koji Okada, Kaoru Takagahara
-
Patent number: 7108951Abstract: 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: GrantFiled: February 26, 2003Date of Patent: September 19, 2006Assignee: Fuji Photo Film Co., Ltd.Inventors: Tomoya Sasaki, Kazuyoshi Mizutani, Shinichi Kanna
-
Patent number: 7015256Abstract: 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: GrantFiled: December 26, 2002Date of Patent: March 21, 2006Assignee: JSR CorporationInventors: Nobuyuki Ito, Hideaki Masuko, Satomi Hasegawa, Atsushi Ito, Katsumi Inomata
-
Patent number: 6908719Abstract: 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: GrantFiled: March 31, 2000Date of Patent: June 21, 2005Assignees: Sanyo Chemical Industries, Ltd., Sony CorporationInventors: Tetsuya Watanabe, Takao Mukai, Yasunori Niwa, Keiko Noda, Chiyoji Watanabe
-
Patent number: 6830872Abstract: 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: GrantFiled: September 20, 2002Date of Patent: December 14, 2004Assignee: Fuji Photo Film Co., Ltd.Inventors: Kazuyoshi Mizutani, Shiro Tan
-
Patent number: 6821692Abstract: 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: GrantFiled: February 4, 1999Date of Patent: November 23, 2004Assignee: Clondiag Chip Technologies GmbHInventors: Eugen Ermantraut, Johann Michael Köhler, Torsten Schulz, Klaus Wohlfart, Stefan Wölfl
-
Publication number: 20040197701Abstract: Disclosed is a presensitized plate composed of a support having thereon an image recording layer which includes:Type: ApplicationFiled: March 26, 2004Publication date: October 7, 2004Inventors: Tomoyoshi Mitsumoto, Ippei Nakamura
-
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
-
Patent number: 6709800Abstract: 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: GrantFiled: August 5, 2002Date of Patent: March 23, 2004Assignee: Fuji Photo Film Co., Ltd.Inventors: Kazuo Fujita, Shiro Tan
-
Patent number: 6444391Abstract: 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: GrantFiled: January 2, 2001Date of Patent: September 3, 2002Assignees: Toyo Gosei Kogyo Co., Ltd., Showa Denko K.K.Inventors: Masaharu Watanabe, Noriaki Tochizawa
-
Patent number: 6398640Abstract: 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: GrantFiled: October 18, 1999Date of Patent: June 4, 2002Assignee: Micro Resist Technology GmbHInventors: Gabi Grützner, Anja Voigt, Jürgen Bendig, Ines Schmidt, Erika Sauer
-
Patent number: 6361926Abstract: 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: GrantFiled: October 23, 1998Date of Patent: March 26, 2002Assignee: The Dow Chemical CompanyInventors: Ying H. So, Robert A. DeVries, Mitchell G. Dibbs, Robert L. McGee, Edward O. Shaffer, II, Michael J. Radler, Richard P. DeCaire
-
Patent number: 6348298Abstract: 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: GrantFiled: June 2, 2000Date of Patent: February 19, 2002Assignee: JSR CorporationInventors: Kouichi Sakurai, Hiroaki Nemoto, Atsushi Kumano
-
Publication number: 20020012867Abstract: 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: ApplicationFiled: August 18, 1999Publication date: January 31, 2002Inventor: TOKUGEN YASUDA
-
Patent number: 6342330Abstract: 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: GrantFiled: January 2, 2001Date of Patent: January 29, 2002Assignees: Toyo Gosei Kogyo Co., Ltd., Showa Denko K.K.Inventors: Masaharu Watanabe, Noriaki Tochizawa, Hirotaka Tagoshi, Tetsuhiko Yamaguchi
-
Patent number: 6309791Abstract: 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: GrantFiled: August 8, 2000Date of Patent: October 30, 2001Assignee: Hitachi Chemical Co.Inventors: Hideo Hagiwara, Yasunori Kojima, Makoto Kaji, Mitsumasa Kojima, Haruhiko Kikkawa
-
Publication number: 20010012597Abstract: 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: ApplicationFiled: January 2, 2001Publication date: August 9, 2001Inventors: Masaharu Watanabe, Noriaki Tochizawa, Hirotaka Tagoshi, Tetsuhiko Yamaguchi
-
Publication number: 20010004510Abstract: 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: ApplicationFiled: December 19, 2000Publication date: June 21, 2001Inventor: David R. Wheeler
-
Publication number: 20010003633Abstract: 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: ApplicationFiled: January 2, 2001Publication date: June 14, 2001Inventors: Masaharu Watanabe, Noriaki Tochizawa, Hirotaka Tagoshi, Tetsuhiko Yamaguchi
-
Patent number: 6245478Abstract: 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: GrantFiled: September 17, 1999Date of Patent: June 12, 2001Assignee: Sumitomo Chemical Company, LimitedInventors: Yasunori Uetani, Ichiki Takemoto
-
Patent number: 6194126Abstract: 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: GrantFiled: August 20, 1998Date of Patent: February 27, 2001Assignee: Hitachi Chemical Co., Ltd.Inventors: Hideo Hagiwara, Makoto Kaji, Masataka Nunomura
-
Patent number: 6156478Abstract: 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: GrantFiled: October 30, 1998Date of Patent: December 5, 2000Assignee: 3M Innovative Properties CompanyInventors: Jie Liu, James G. Bentsen
-
Patent number: 6143475Abstract: 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: GrantFiled: May 22, 1998Date of Patent: November 7, 2000Assignee: Hitachi Chemical Co.Inventors: Hideo Hagiwara, Yasunori Kojima, Makoto Kaji, Mitsumasa Kojima, Haruhiko Kikkawa
-
Patent number: 6140007Abstract: 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: GrantFiled: May 12, 1999Date of Patent: October 31, 2000Assignee: Toyo Gosei Kogyo Co., Ltd.Inventors: Masaharu Watanabe, Noriaki Tochizawa, Yukari Imamura, Hideo Kikuchi
-
Patent number: 6127074Abstract: 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: GrantFiled: December 11, 1998Date of Patent: October 3, 2000Assignee: 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: 6090525Abstract: 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: GrantFiled: May 18, 1998Date of Patent: July 18, 2000Assignee: Toray Industries, Inc.Inventors: Tomoyuki Yuba, Yoshihiro Ishikawa, Masaya Asano
-
Patent number: 6071667Abstract: 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: GrantFiled: April 10, 1996Date of Patent: June 6, 2000Assignee: Hitachi Chemical Co., Ltd.Inventors: Hideo Hagiwara, Yasunori Kojima, Makoto Kaji, Mitsumasa Kojima, Haruhiko Kikkawa
-
Patent number: 6037085Abstract: 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: GrantFiled: June 19, 1996Date of Patent: March 14, 2000Assignee: Printing Development Inc.Inventors: Bruce Holman, III, Jeffrey G. Zaloom, Peiguang Zhou, Larry Sharkozy, Merlin L. Mulvey
-
Patent number: 6020093Abstract: 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: GrantFiled: May 13, 1998Date of Patent: February 1, 2000Assignee: Toyo Gosei Kogyo, Ltd.Inventors: Toru Shibuya, Jian Rong Xie, Noriaki Tochizawa
-
Patent number: 5962192Abstract: 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: GrantFiled: June 11, 1997Date of Patent: October 5, 1999Assignee: Printing Developments, Inc.Inventors: Bruce Holman, III, Jeffrey G. Zaloom, Peiguang Zhou, Larry Sharkozy, Merlin L. Mulvey
-
Patent number: 5948592Abstract: 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: GrantFiled: July 7, 1998Date of Patent: September 7, 1999Assignee: Fuji Chemicals Industrial Co., Ltd.Inventors: Hiroshi Umehara, Takateru Asano
-
Patent number: 5925492Abstract: 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: GrantFiled: September 15, 1997Date of Patent: July 20, 1999Assignee: JSR CorporationInventors: Yoshihiro Hosaka, Ikuo Nozue, Masashige Takatori, Yoshiyuki Harita
-
Patent number: 5891749Abstract: 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: GrantFiled: December 26, 1996Date of Patent: April 6, 1999Assignee: Hyundai Electronics Industries Co., Ltd.Inventor: Ki-Yeop Park
-
Patent number: 5885744Abstract: 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: GrantFiled: July 14, 1997Date of Patent: March 23, 1999Assignee: Samsung Display Devices Co., Ltd.Inventors: Seung-joon Yoo, Ik-chul Lim, Chang-wook Kim, Ki-wook Kang
-
Patent number: 5856059Abstract: 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: GrantFiled: June 17, 1996Date of Patent: January 5, 1999Assignee: Hitachi Chemical Co., Ltd.Inventors: Hideo Hagiwara, Makoto Kaji, Masataka Nunomura
-
Patent number: 5853928Abstract: 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: GrantFiled: December 18, 1995Date of Patent: December 29, 1998Assignee: Samsung Display Devices Co., Ltd.Inventor: Min-Ho Kim
-
Patent number: 5846686Abstract: 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: GrantFiled: January 29, 1997Date of Patent: December 8, 1998Assignee: Rohm Co., Ltd.Inventor: Akira Kamisawa
-
Patent number: 5807657Abstract: 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: GrantFiled: December 11, 1996Date of Patent: September 15, 1998Assignee: Toyo Gosei Kogyo Co., Ltd.Inventors: Hideo Kikuchi, Noriaki Tochizawa, Yasuo Kuniyoshi
-
Patent number: RE37033Abstract: 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: GrantFiled: January 3, 1997Date of Patent: January 30, 2001Assignee: JSR CorporationInventors: Yusuke Tajima, Nobuo Bessho, Fumitaka Takinishi, Hideaki Masuko, Yasuaki Yokoyama
-
Patent number: RE40728Abstract: 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: GrantFiled: March 24, 2004Date of Patent: June 9, 2009Inventors: Ying H. So, Robert A. DeVries, Mitchell G. Dibbs, Robert L. McGee, Edward O. Shaffer, II, Michael J. Radler, Richard P. DeCaire