# US 2020/0319373 A1 · Powder for forming black light-shielding film and method for manufacturing same

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- Number: US 2020/0319373 A1
- Document ID: US20200319373A1
- Status: Published application
- Kind: A1
- Application number: 16/957,197
- Filed: 2018-10-25
- Published: 2020-10-08
- Earliest claimed: 2017-12-26
- Assignees: Mitsubishi Materials Electronic Chemicals Co., Ltd.
- Applicants: Mitsubishi Materials Electronic Chemicals Co., Ltd.
- Inventors: Takashi KONISHI; Kensuke KAGEYAMA
- Web page: https://patentgrep.com/patent/US20200319373A1

## CPC

- C01G 25/00: Compounds of zirconium
- G02B 1/00: Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- B22F 9/22: using gaseous reductors
- C01B 21/076: with titanium or zirconium {or hafnium}
- C01B 21/0766: {Preparation by pyrolysis of nitrogen containing titanium, zirconium or hafnium compounds}
- C09D 5/32: Radiation-absorbing paints {(protection against X-, gamma- or corpuscular radiation G21F)}
- C09D 7/61: inorganic
- G03F 7/0042: {with inorganic or organometallic light-sensitive compounds not otherwise provided for, e.g. inorganic resists (G03F7/075 takes precedence)}
- G03F 7/0045: {with organic non-macromolecular light-sensitive compounds not otherwise provided for, e.g. dissolution inhibitors}
- B22F 2201/016: NH3
- B22F 2201/02: Nitrogen
- B22F 2201/10: Inert gases
- B22F 2302/20: Nitride
- C01P 2002/52: containing elements as dopants
- C01P 2002/54: one element only
- C01P 2004/61: Micrometer sized, i.e. from 1-100 micrometer
- C01P 2006/12: Surface area
- G02B 1/10: Optical coatings produced by application to, or surface treatment of, optical elements (G02B1/08 takes precedence)
- G02B 5/003: {Light absorbing elements}
- G02F 1/133512: {Light shielding layers, e.g. black matrix (G02F1/136209 takes precedence)}
- C01G: COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F (metal hydrides {monoborane, diborane or addition complexes thereof} C01B6/00; salts of oxyacids of halogens C01B11/00; peroxides, salts or peroxyacids C01B15/00; thiosulfates, dithionites, polythionates C01B17/64; compounds containing selenium, or tellurium C01B19/00; binary compounds of nitrogen with metals C01B21/06; azides C01B21/08; {compounds containing nitrogen, other non-metals and metal C01B21/082}; metal amides C01B21/092; nitrites C01B21/50; {compounds of noble gases C01B23/0005}; phosphides C01B25/08; salts of oxyacids of phosphorus C01B25/16; carbides C01B32/90; compounds containing silicon C01B33/00; compounds containing boron C01B35/00; compounds having molecular sieve properties but not having base-exchange properties C01B37/00; compounds having molecular sieve and base-exchange properties, e.g. crystalline zeolites, C01B39/00; cyanides C01C3/08; salts of cyanamide C01C3/16; thiocyanates C01C3/20)
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- B22F: WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER (making alloys by powder metallurgy C22C); APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- C01B: NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; {METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C}
- C09D: COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12; processes for the electrolytic or electrophoretic production of coatings C25D)
- G03F: PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR; (phototypographic composing devices B41B; photosensitive materials or processes for photographic purposes G03C; electrophotography, sensitive layers or processes therefor G03G)
- C01P: INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS

## Abstract

The present invention provides a powder for forming a black light-shielding film having a specific surface area of 20 to 90 m2/g, which is measured by the BET method, comprising zirconium nitride as a main component, and containing magnesium and/or aluminum. If containing the magnesium, the content of the magnesium is 0.01 to 1.0% by mass relative to 100% by mass of the powder for forming a black light-shielding film, and if containing the aluminum, the content of the aluminum is 0.01 to 1.0% by mass relative to 100% by mass of the powder for forming the black light-shielding film.

## Claims

### Claim 1

A powder for forming a black light-shielding film having a specific surface area of 20 to 90 m2/g, which is measured by the BET method, comprising a zirconium nitride powder as a main component, and containing magnesium and/or aluminum, characterized in that:
if containing the magnesium, the content of the magnesium is 0.01 to 1.0% by mass relative to 100% by mass of the powder for forming a black light-shielding film, and if containing the aluminum, the content of the aluminum is 0.01 to 1.0% by mass relative to 100% by mass of the powder for forming the black light-shielding film.

### Claim 2

A method for manufacturing powder for forming a black light-shielding film by mixing zirconium dioxide powder, metallic magnesium powder, magnesium oxide powder or magnesium nitride, and aluminum oxide powder or aluminum nitride powder so that the metallic magnesium is 25 to 150% by mass relative to 100% by mass of the zirconium dioxide, the magnesium oxide is 15 to 500% by mass relative to 100% by mass of the zirconium dioxide, and the aluminum oxide or the aluminum nitride is 0.02 to 5.0% by mass relative to 100% by mass of the zirconium dioxide, firing the obtained mixed power under an atmosphere of a sole nitrogen gas, under an atmosphere of a mixed gas of a nitrogen gas and a hydrogen gas, under an atmosphere of a mixed gas of a nitrogen gas and an ammonium gas, or under an atmosphere of a mixed gas of a nitrogen gas and an inert gas at a temperature of 650 to 900° C. to reduce the mixed powder.

### Claim 3 (depends on 1)

A black photosensitive composition which contains the powder for forming the black light-shielding film according to claim 1 as a black pigment.

### Claim 4 (depends on 3)

A method for forming a black light-shielding film using the black photosensitive composition according to claim 3.

### Claim 5 (depends on 2)

A black photosensitive composition which contains the powder for forming a black light-shielding film manufactured by the method according to claim 2 as a black pigment.

### Claim 6 (depends on 5)

A method for forming a black light-shielding film using the black photosensitive composition according to claim 5.